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TW201805175A - Labeled resin molded article and method of producing the same - Google Patents

Labeled resin molded article and method of producing the same Download PDF

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Publication number
TW201805175A
TW201805175A TW106114176A TW106114176A TW201805175A TW 201805175 A TW201805175 A TW 201805175A TW 106114176 A TW106114176 A TW 106114176A TW 106114176 A TW106114176 A TW 106114176A TW 201805175 A TW201805175 A TW 201805175A
Authority
TW
Taiwan
Prior art keywords
resin molded
layer
porous
ink
molded product
Prior art date
Application number
TW106114176A
Other languages
Chinese (zh)
Other versions
TWI753905B (en
Inventor
鈴木達也
石毛敦
中村綱
Original Assignee
優寶股份有限公司
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Application filed by 優寶股份有限公司 filed Critical 優寶股份有限公司
Publication of TW201805175A publication Critical patent/TW201805175A/en
Application granted granted Critical
Publication of TWI753905B publication Critical patent/TWI753905B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/20Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/16Making multilayered or multicoloured articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02Forms or constructions
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/04Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps to be fastened or secured by the material of the label itself, e.g. by thermo-adhesion

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Laminated Bodies (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

於將標籤自樹脂成形品剝離時,多孔質層(B)分離為在貼附於樹脂成形品之狀態下殘留之第1多孔質分離層(B1 )、與伴隨基層(A)而剝離之第2多孔質分離層(B2 ),且於第1多孔質分離層(B1 )之剝離後露出面出現由墨水組合物形成之第1墨水圖案(P1 )。該第1墨水圖案(P1 )可藉由目視進行確認。When the label is peeled from the resin molded product, the porous layer (B) is separated into a first porous separation layer (B 1 ) remaining in a state of being adhered to the resin molded product, and a layer separated from the base layer (A) The second porous separation layer (B 2 ), and a first ink pattern (P 1 ) formed of the ink composition appeared on the exposed surface of the first porous separation layer (B 1 ) after peeling. The first ink pattern (P 1 ) can be confirmed visually.

Description

附標籤之樹脂成形品及其製造方法Labeled resin molded article and manufacturing method thereof

本發明係關於一種附標籤之樹脂成形品者。更具體而言,係關於一種利用標籤之多孔質層將標籤貼附於樹脂成形品的附標籤之樹脂成形品者。The present invention relates to a labeled resin molded product. More specifically, the present invention relates to a labeled resin molded product in which a label is attached to a resin molded product using a porous layer of the label.

先前以來,業界一直預先於模具內插入坯料或標籤,繼而藉由射出成形、吹氣成形、差壓成形、發泡成形等於該模具內成形容器等樹脂成形品,而成形標籤成為一體之樹脂成形品。此種標籤稱為模內成形用標籤。作為模內成形用標籤,已知有經凹版印刷之樹脂膜、經膠版印刷之合成紙、經軟版印刷之合成紙、或者於鋁箔之背面藉由高壓法層壓低密度聚乙烯、乙烯-乙酸乙烯酯共聚物並於該箔之表面進行凹版印刷之鋁標籤等,供於實際使用。 近年來,就塑膠容器之回收利用(材料重複利用)之觀點而言,業界提出自使用模內成形用標籤之附標籤之塑膠容器容易地將標籤分離並去除之強烈要求。為了應對此種強烈要求,亦提出有於標籤內設置有能夠實現界面剝離或層間剝離之層者。 此種先前之模內成形用標籤為了與樹脂成形品接合,大部分設置有高密度聚乙烯等作為熱密封層。此種標籤於成形品之素材方面與熱密封層相同而為聚乙烯樹脂之情形時,可獲得與成形品之牢固接著力。但是,於成形品之素材為與熱密封層不同之聚丙烯、聚苯乙烯、聚對苯二甲酸乙二酯等之情形時,有與該成形品之接著力極低、輸送途中標籤容易自該成形品剝離之缺點。因此,為了使標籤與成形品之接著地牢固,需要針對各成形品準備使用有與成形品相同之素材之樹脂作為熱密封層之標籤,而產生標籤之庫存管理複雜化之問題。又,業界亦指出如下缺點:於成形品之成形溫度較低之情形時,成形品與標籤之間無法獲得充分之接著強度,因此需要將成形品之成形溫度設定為較高,而導致生產性降低。 因此,代替藉由包含低熔點樹脂之熱密封層之熱熔著而進行貼附之先前型模內成形用標籤,而提出有於貼附側表面具有表面開口之多孔質樹脂層之新型模內成形用標籤(例如參照專利文獻1)。該模內成形用標籤中,成形品樹脂發揮出於成形時之壓力下進入至多孔質樹脂層表面之開口部之抓固效果,因此不論成形品之素材為何,均可使標籤與成形品之接著變得牢固。藉由將此種多孔質樹脂層用於標籤,可於廣泛之成形品成形條件下進行標籤之貼合,且亦可將標籤容易地自模內成形之附標籤之樹脂成形品分離。 [先前技術文獻] [專利文獻] 專利文獻1:日本專利特開2012-215799號公報Previously, the industry has been inserting blanks or labels into molds in advance, and then injection molding, blow molding, differential pressure molding, and foam molding are equal to resin molded products such as molded containers in the mold, and the molded labels are integrated into resin molding. Product. Such a label is called an in-mold label. As a label for in-mold forming, a gravure-printed resin film, an offset-printed synthetic paper, a flexo-printed synthetic paper, or a low-density polyethylene and ethylene-acetic acid laminated on the back surface of an aluminum foil by a high pressure method are known. Vinyl ester copolymer and aluminum label etc. which are gravure printed on the surface of the foil for practical use. In recent years, from the viewpoint of recycling (recycling of materials) of plastic containers, the industry has put forward a strong demand for easy separation and removal of labels from plastic containers with labels using in-mold labels. To cope with such a strong demand, it is also proposed to provide a layer in the label capable of achieving interface peeling or interlayer peeling. In order to bond such a conventional in-mold molding label to a resin molded product, high-density polyethylene or the like is mostly provided as a heat-sealing layer. When such a label is made of a polyethylene resin in the same material as the heat-sealing layer in terms of the material of the molded product, a strong adhesive force with the molded product can be obtained. However, when the material of the molded product is polypropylene, polystyrene, polyethylene terephthalate, etc., which is different from the heat-sealing layer, the adhesive force with the molded product is extremely low, and the label is easy to self-transport during transportation. Disadvantages of this molded product. Therefore, in order to secure the bonding between the label and the molded product, it is necessary to prepare a label using a resin having the same material as the molded product as a heat-seal layer for each molded product, which complicates the inventory management of the label. In addition, the industry also pointed out the following disadvantages: when the molding temperature of the molded product is low, sufficient bonding strength cannot be obtained between the molded product and the label. Therefore, it is necessary to set the molding temperature of the molded product to a high level, resulting in productivity. reduce. Therefore, instead of the conventional mold-in-mold label attached by heat-sealing of a heat-sealing layer containing a low-melting resin, a new type of mold having a porous resin layer having a surface opening on the side surface of the attachment was proposed. A label for molding (for example, refer to Patent Document 1). In this label for in-mold molding, the molded resin exerts a gripping effect on the opening of the porous resin layer surface under the pressure during molding. Therefore, regardless of the material of the molded product, the label and the molded product can be used. Then it becomes firm. By using such a porous resin layer for a label, the label can be attached under a wide range of molded product molding conditions, and the label can be easily separated from the resin molded product with the label formed in the mold. [Prior Art Document] [Patent Document] Patent Document 1: Japanese Patent Laid-Open No. 2012-215799

[發明所欲解決之課題] 且說,可對如上所述之新型附標籤之樹脂成形品所使用之標籤之貼附面預先賦予印刷資訊,若於藉由自樹脂成形品剝離標籤而露出之樹脂成形品側之露出面(因剝離而露出之面)、或自樹脂成形品剝離之標籤之露出面(因剝離而露出之面)中可確認該印刷資訊,則可將該資訊用於各種用途,較為有用。例如,根據該印刷資訊,可特定出標籤經剝離之樹脂成形品而防止該樹脂成形品之再利用或偽造,可自剝離標籤後之樹脂成形品傳遞進一步之注意事項或商品資訊等,可使之具有將剝離之標籤作為優惠券等進行二次利用等進一步之功能。然而,於標籤之貼附面為多孔質層之情形時,並無實際上實現上述功能之報告例。例如,若對如專利文獻1所記載之標籤之貼附面實施印刷,並自附標籤之樹脂成形品剝離標籤,此後,可於樹脂成形品側之剝離後之露出面留有該印刷,或可於標籤側之剝離後之露出面留有該印刷,則有用。然而,該文獻中並未作出用以實現此之方法相關之記載或提示。又,本發明者等人明白,於以專利文獻1中記載之條件製造之標籤之貼附面印刷墨水之圖案,並使用所獲得之印刷完成標籤將附標籤之樹脂成形品進行模內成形,此後自樹脂成形品剝離標籤時,於標籤之剝離後露出面完全無法確認該墨水圖案。因此,本發明者等人之課題在於獲得一種附標籤之樹脂成形品,其係標籤以多孔質層貼附於樹脂成形品的附標籤之樹脂成形品,其中於將標籤自樹脂成形品剝離時,於樹脂成形品或標籤之剝離後露出面出現可視認之墨水圖案。 [解決課題之技術方法] 本發明者等人為了解決上述課題,使用具有基層(A)與多孔質層(B)之積層結構之標籤進行努力研究。結果發現,藉由使用印刷於多孔質層(B)之表面之墨水圖案滲透至多孔質層(B)的標籤,並且以於將標籤自樹脂成形品剝離時多孔質層(B)被破壞之方式進行設計,可解決該課題。具體而言,本發明係以如下方法解決課題。 [1]一種附標籤之樹脂成形品,其特徵在於:其係具有樹脂成形品、與貼附於該樹脂成形品之標籤者,且上述標籤包括基層(A)、設置於該基層(A)上之多孔質層(B)、存在於該多孔質層(B)內部之空隙、及以佔據該空隙之一部分之方式存在之墨水組合物,上述標籤係以上述多孔質層(B)側之表面貼附於上述樹脂成形品,自上述多孔質層(B)之端面以多孔質層(B)沿厚度方向成為2部分之方式形成切口,並以該切口擴大之方式拉伸上述基層(A)而自上述樹脂成形品剝離上述標籤時,上述多孔質層(B)分離為在貼附於上述樹脂成形品之狀態下殘留之第1多孔質分離層(B1 )、及伴隨上述基層(A)而剝離之第2多孔質分離層(B2 ),並且上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面出現由上述墨水組合物形成之第1墨水圖案(P1 ),且上述第1墨水圖案(P1 )可藉由目視進行確認。 [2]如[1]記載之附標籤之樹脂成形品,其中上述第1墨水圖案(P1 )係將上述墨水組合物供給至上述多孔質層(B)之與上述基層(A)相反側之表面,使墨水組合物滲透至多孔質層(B)之空隙之內部而成者。 [3]如[1]或[2]記載之附標籤之樹脂成形品,其中上述墨水組合物為實質上不含色材之無色之墨水組合物。 [4]如[3]記載之附標籤之樹脂成形品,其中於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面,形成有上述第1墨水圖案(P1 )之圖案形成區域內之複數個空隙經上述無色之墨水組合物填充,上述圖案形成區域與未形成上述第1墨水圖案(P1 )之圖案未形成區域之間不透明度不同。[5]如[3]或[4]記載之附標籤之樹脂成形品,其中於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面中未形成上述第1墨水圖案(P1 )之圖案未形成區域與上述樹脂成形品之表面之色差(ΔEB )、與於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面中形成有上述第1墨水圖案(P1 )之圖案形成區域與上述樹脂成形品之表面之色差(ΔEP )的差(ΔEB -ΔEP )為1~50。 [6]如[3]~[5]中任一項記載之附標籤之樹脂成形品,其特徵在於:於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面,形成有上述第1墨水圖案(P1 )之圖案形成區域與未形成上述第1墨水圖案(P1 )之圖案未形成區域的色差ΔE為3以上。 [7]如[3]~[6]中任一項記載之附標籤之樹脂成形品,其中於為上述第2多孔質分離層(B2 )之與上述基層(A)相反側之表面且與上述第1墨水圖案(P1 )為鏡像關係之對應區域(P'),無法藉由目視而確認墨水圖案。 [8]如[7]記載之附標籤之樹脂成形品,其中上述對應區域(P')之空隙之內部存在上述墨水組合物。 [9]如[1]或[2]記載之附標籤之樹脂成形品,其中上述墨水組合物為包含色材之有色之墨水組合物。 [10]如[9]記載之附標籤之樹脂成形品,其中自上述多孔質層(B)之端面以多孔質層(B)沿厚度方向成為2部分之方式形成切口,並以該切口擴大之方式拉伸上述基層(A)而將上述標籤自上述樹脂成形品剝離時,上述墨水組合物較多孔質層(B)之剝離面更滲透至上述基層(A)側內部之空隙,藉此於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面出現由上述墨水組合物形成之第1墨水圖案(P1 ),並且於伴隨上述基層(A)而剝離之上述第2多孔質分離層(B2 )之與上述基層(A)相反側之表面出現由上述墨水組合物形成之第2墨水圖案(P2 ),且上述第2墨水圖案(P2 )可藉由目視進行確認。[11]如[10]記載之附標籤之樹脂成形品,其特徵在於:於上述第2多孔質分離層(B2 )之與上述基層(A)相反側之表面中,形成有上述第2墨水圖案(P2 )之圖案形成區域與未形成上述第2墨水圖案(P2 )之圖案未形成區域的色差ΔE為3以上。 [12]如[10]或[11]記載之附標籤之樹脂成形品,其中上述第1墨水圖案(P1 )與上述第2墨水圖案(P2 )互為鏡像關係。 [13]如[10]~[12]中任一項記載之附標籤之樹脂成形品,其中於將黏著帶之黏著面貼附於上述第2多孔質分離層(B2 )之表面之上述第2墨水圖案(P2 )之表面後,將上述黏著帶自上述第2多孔質分離層(B2 )以180°之剝離角及300 mm/min之速度進行剝離時,於上述第2多孔質分離層(B2 )之表面可藉由目視而確認上述第2墨水圖案(P2 ),並且於上述黏著帶之黏著面可藉由目視而確認上述第2墨水圖案(P2 )之反轉圖案。 [14]如[1]~[13]中任一項記載之附標籤之樹脂成形品,其中上述多孔質層(B)自厚度方向之剖面進行觀察之空隙率為30~70%。[15]如[1]~[14]中任一項記載之附標籤之樹脂成形品,其中上述多孔質層(B)自厚度方向之剖面進行觀察之空隙率大於上述基層(A)自厚度方向之剖面進行觀察之空隙率。[16]如[1]~[15]中任一項記載之附標籤之樹脂成形品,其中自上述樹脂成形品將具有上述基層(A)之標籤剝離時,依據JIS Z 1707:1997食器包裝用塑膠膜通則所獲得之180°剝離強度為0.3~1.6 N/15 mm。[17]一種附多孔質層之樹脂成形品,其係具有自如[1]~[16]中任一項記載之附標籤之樹脂成形品將基層(A)及第2多孔質分離層(B2 )剝離後所殘留的樹脂成形品與第1多孔質分離層(B1 )者。[18]如[17]記載之附多孔質層之樹脂成形品,其中於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面具有由墨水組合物形成之第1墨水圖案(P1 )。[19]一種附標籤之樹脂成形品之製造方法,其係製造如[1]~[16]中任一項記載之附標籤之樹脂成形品的方法,並且具有如下步驟:積層樹脂膜形成步驟,其形成具有基層(A)與設置於該基層之上之多孔質層(B)之積層樹脂膜;印刷步驟,其於上述積層樹脂膜之上述多孔質層(B)之與上述基層(A)相反側之表面印刷墨水組合物形成墨水圖案而獲得標籤;及成形步驟,其將形成有上述墨水圖案之上述標籤以上述基層(A)側成為模具之內壁側、上述多孔質層(B)側成為空腔側而可與熔融樹脂相接之方式插入上述模具內,藉由模內成形法而獲得附標籤之樹脂成形品。[20]如[19]記載之附標籤之樹脂成形品之製造方法,其中上述墨水組合物無色且透明。[21]如[19]記載之附標籤之樹脂成形品之製造方法,其中上述第1墨水圖案(P1 )與上述樹脂成形品之表面之色差ΔEP0 未達3。[22]如[19]記載之附標籤之樹脂成形品之製造方法,其中上述墨水組合物有色,且上述第1墨水圖案(P1 )與多孔質層(B)之色差ΔE0 為3以上。[23]如[19]~[22]中任一項記載之附標籤之樹脂成形品之製造方法,其中上述墨水組合物利用JIS Z8803:2011之B型黏度計所測得之黏度為10~1500 mPa・s。[24]如[19]~[23]中任一項記載之附標籤之樹脂成形品之製造方法,其中於上述印刷步驟中,使用軟版印刷法作為墨水組合物之印刷方法。[25]如[19]~[24]中任一項記載之附標籤之樹脂成形品之製造方法,其中於上述印刷步驟與上述成形步驟之間具有如下步驟:於形成有上述墨水圖案之上述多孔質層之表面印刷熱密封樹脂組合物。[26]如[19]~[24]中任一項記載之附標籤之樹脂成形品之製造方法,其中於上述印刷步驟與上述成形步驟之間具有如下步驟:於形成有上述墨水圖案之上述多孔質層之表面塗敷熱密封樹脂組合物。 [發明之效果] 對於本發明之附標籤之樹脂成形品,若將具有基層(A)之標籤自樹脂成形品剝離,則與此同時,貼附於樹脂成形品之標籤之多孔質層(B)發生凝集破壞,分離為在貼附於樹脂成形品之狀態下殘留之成形品側之第1多孔質分離層(B1 )、與伴隨基層(A)而剝離之基層側之第2多孔質分離層(B2 ),各分離層(B1 )、(B2 )之表面露出至外部。此時,本發明之附標籤之樹脂成型品中,於存在於多孔質層(B)內部之空隙中,以佔據該空隙之空間之一部分之方式存在有墨水組合物,藉此至少於第1多孔質分離層(B1 )露出之表面出現可藉由目視進行確認之墨水圖案。可根據該墨水圖案而確認對多孔質層(B)之表面所賦予之墨水組合物之圖案。[Problems to be Solved by the Invention] In addition, it is possible to give printing information in advance to the labeling surface of the new-type labeled resin molded product described above, and if the resin is exposed by peeling the label from the resin molded product The printed information can be confirmed on the exposed surface (surface exposed by peeling) on the molded product side or the exposed surface (surface exposed by peeling) of the label peeled from the resin molded product, and the information can be used for various purposes. Is more useful. For example, according to the printing information, the resin molded product with the label peeled off can be specified to prevent the reuse or forgery of the resin molded product. Further attention can be given to the resin molded product after the label is peeled off, or the product information can be transmitted. It has further functions such as using the peeled label as a coupon for secondary use. However, in the case where the label's attached surface is a porous layer, there are no examples of reports that actually achieve the above functions. For example, if printing is performed on the label attachment surface as described in Patent Document 1, and the label is peeled from the resin molded product with the label attached, the printing may be left on the exposed surface of the resin molded product after peeling, or It is useful to leave the printing on the exposed surface after peeling on the label side. However, there are no records or tips related to the method used to achieve this in the document. In addition, the inventors have understood that a pattern of printing ink is applied to the surface of a label manufactured under the conditions described in Patent Document 1, and that the molded resin product with the label is in-mold molded using the obtained printed label. When the label is peeled from the resin molded product thereafter, the ink pattern cannot be confirmed at all on the exposed surface of the label after peeling. Therefore, an object of the present inventors is to obtain a labeled resin molded product, which is a labeled resin molded product in which a label is attached to the resin molded product with a porous layer, and the label is peeled from the resin molded product. A visible ink pattern appears on the exposed surface of the resin molded product or label after peeling. [Technical method to solve the problem] In order to solve the above-mentioned problem, the present inventors have made intensive studies using a label having a laminated structure of a base layer (A) and a porous layer (B). As a result, it was found that the label penetrated into the porous layer (B) by using the ink pattern printed on the surface of the porous layer (B), and the porous layer (B) was broken when the label was peeled from the resin molded product. Design can solve this problem. Specifically, the present invention solves the problems by the following methods. [1] A resin molded product with a label, comprising: a resin molded product and a label attached to the resin molded product, wherein the label includes a base layer (A) and is provided on the base layer (A) The porous layer (B) above, the voids existing inside the porous layer (B), and the ink composition existing so as to occupy a part of the voids, the label is on the porous layer (B) side. The surface is attached to the resin molded product, a cut is formed from the end surface of the porous layer (B) so that the porous layer (B) becomes two parts in the thickness direction, and the base layer (A is stretched so that the cut is enlarged. ) When the label is peeled from the resin molded product, the porous layer (B) is separated into a first porous separation layer (B 1 ) remaining in a state of being adhered to the resin molded product, and the base layer ( A) The second porous separation layer (B 2 ) is peeled off, and the first ink pattern formed by the ink composition appears on the surface of the first porous separation layer (B 1 ) on the opposite side to the resin molded product. (P 1), and said first ink pattern (P 1) can be determined by visually . [2] The labeled resin molded article according to [1], wherein the first ink pattern (P 1 ) is to supply the ink composition to a side of the porous layer (B) opposite to the base layer (A) The surface of the porous layer (B) is formed by permeating the ink composition. [3] The labeled resin molded article according to [1] or [2], wherein the ink composition is a colorless ink composition containing substantially no color material. [4] The labeled resin molded article according to [3], wherein the first ink pattern (P 1) is formed on a surface of the first porous separation layer (B 1 ) opposite to the resin molded article. A plurality of voids in the pattern formation area are filled with the colorless ink composition, and the opacity is different between the pattern formation area and the pattern unformed area in which the first ink pattern (P 1 ) is not formed. [5] The labeled resin molded product according to [3] or [4], wherein the first ink is not formed on a surface of the first porous separation layer (B 1 ) opposite to the resin molded product. The color difference (ΔE B ) between the non-patterned area of the pattern (P 1 ) and the surface of the resin molded product, and the surface of the first porous separation layer (B 1 ) opposite to the resin molded product are formed. The difference (ΔE B −ΔE P ) between the color difference (ΔE P ) of the pattern formation area of the first ink pattern (P 1 ) and the surface of the resin molded product is 1 to 50. [6] The labeled resin molded article according to any one of [3] to [5], characterized in that: the surface of the first porous separation layer (B 1 ) on the opposite side to the resin molded article , formed with the first ink pattern (P 1) of the pattern forming region is not formed and the color difference ΔE of the first ink pattern (P 1) of the pattern non-formation region 3 or more. [7] The labeled resin molded article according to any one of [3] to [6], wherein the second porous separation layer (B 2 ) is a surface on the opposite side of the base layer (A) and with the first ink pattern (P 1) is a mirror image relation of a corresponding region (P '), it can not be visually confirmed by the ink pattern. [8] The labeled resin molded article according to [7], wherein the ink composition is present inside a void in the corresponding region (P ′). [9] The labeled resin molded article according to [1] or [2], wherein the ink composition is a colored ink composition containing a color material. [10] The labeled resin molded article according to [9], wherein a cut is formed from the end surface of the porous layer (B) so that the porous layer (B) becomes two in the thickness direction, and the cut is enlarged by the cut When the base layer (A) is stretched in such a manner as to peel the label from the resin molded product, the ink composition penetrates into the voids in the base layer (A) side more than the release surface of the porous layer (B), whereby A first ink pattern (P 1 ) formed by the ink composition appears on a surface of the first porous separation layer (B 1 ) opposite to the resin molded product, and is peeled off along with the base layer (A). A second ink pattern (P 2 ) formed by the ink composition appears on a surface of the second porous separation layer (B 2 ) opposite to the base layer (A), and the second ink pattern (P 2 ) may be Confirm visually. [11] The labeled resin molded article according to [10], characterized in that the second porous separation layer (B 2 ) is formed on a surface of the second porous separation layer (B 2 ) opposite to the base layer (A). The color difference ΔE between the pattern formation area of the ink pattern (P 2 ) and the pattern formation area where the second ink pattern (P 2 ) is not formed is 3 or more. [12] The labeled resin molded article according to [10] or [11], wherein the first ink pattern (P 1 ) and the second ink pattern (P 2 ) are in a mirror image relationship with each other. [13] The labeled resin molded article according to any one of [10] to [12], wherein the adhesive surface of the adhesive tape is attached to the surface of the second porous separation layer (B 2 ). After the surface of the second ink pattern (P 2 ), when the adhesive tape is peeled from the second porous separation layer (B 2 ) at a peeling angle of 180 ° and a speed of 300 mm / min, the second porous is The second ink pattern (P 2 ) can be visually confirmed on the surface of the mass separation layer (B 2 ), and the reverse of the second ink pattern (P 2 ) can be visually confirmed on the adhesive surface of the adhesive tape. Turn pattern. [14] The labeled resin molded article according to any one of [1] to [13], wherein the porosity of the porous layer (B) as viewed from a cross section in the thickness direction is 30 to 70%. [15] The resin molded article with a label according to any one of [1] to [14], wherein a porosity of the porous layer (B) as viewed from a cross section in a thickness direction is greater than a thickness of the base layer (A) The porosity of the cross section of the observation. [16] The labeled resin molded article according to any one of [1] to [15], wherein when the label having the above-mentioned base layer (A) is peeled from the resin molded article, the food container is packaged according to JIS Z 1707: 1997 The 180 ° peel strength obtained with plastic film rules is 0.3 to 1.6 N / 15 mm. [17] A resin-molded article with a porous layer, the resin-molded article with a label according to any one of [1] to [16], wherein the base layer (A) and the second porous separation layer (B 2 ) The resin molded product remaining after the peeling and the first porous separation layer (B 1 ). [18] The resin molded article with a porous layer according to [17], wherein the first porous separation layer (B 1 ) has a first surface made of an ink composition on a surface opposite to the resin molded article. Ink pattern (P 1 ). [19] A method for manufacturing a labeled resin molded article, which is a method for manufacturing a labeled resin molded article as described in any one of [1] to [16], and has the following steps: a laminated resin film forming step Forming a laminated resin film having a base layer (A) and a porous layer (B) provided on the base layer; a printing step of forming the laminated layer on the porous layer (B) of the laminated resin film and the base layer (A) ) Printing the ink composition on the opposite surface to form an ink pattern to obtain a label; and a forming step of forming the label on which the ink pattern is formed with the base layer (A) side as the inner wall side of the mold and the porous layer (B ) Side becomes the cavity side and can be inserted into the mold so as to be in contact with the molten resin, and a labeled resin molded product is obtained by an in-mold molding method. [20] The method for producing a labeled resin molded article according to [19], wherein the ink composition is colorless and transparent. [21] The method for producing a labeled resin molded article according to [19], wherein the color difference ΔE P0 between the first ink pattern (P 1 ) and the surface of the resin molded article is not more than 3. [22] The method for producing a labeled resin molded article according to [19], wherein the ink composition is colored, and a color difference ΔE 0 between the first ink pattern (P 1 ) and the porous layer (B) is 3 or more . [23] The method for producing a labeled resin molded article according to any one of [19] to [22], wherein the viscosity of the ink composition measured by a type B viscometer of JIS Z8803: 2011 is 10 to 1500 mPa · s. [24] The method for producing a labeled resin molded article according to any one of [19] to [23], wherein in the printing step, a flexographic printing method is used as a printing method of the ink composition. [25] The method for producing a labeled resin molded article according to any one of [19] to [24], further comprising a step between the printing step and the forming step: forming the ink pattern on the above A heat-sealing resin composition is printed on the surface of the porous layer. [26] The method for producing a labeled resin molded article according to any one of [19] to [24], wherein the method includes the following steps between the printing step and the forming step: The surface of the porous layer is coated with a heat-sealing resin composition. [Effects of the Invention] When the label-formed resin molded product of the present invention is peeled from the resin-molded product, the label having the base layer (A) is simultaneously attached to the porous layer (B of the resin-molded product label). ) Aggregation failure occurred and separated into the first porous separation layer (B 1 ) on the molded product side remaining in the state of being adhered to the resin molded product, and the second porous side on the base layer side which was peeled off along with the base layer (A) In the separation layer (B 2 ), the surface of each separation layer (B 1 ), (B 2 ) is exposed to the outside. At this time, in the labeled resin molded product of the present invention, an ink composition exists in a void existing inside the porous layer (B) so as to occupy a part of the space of the void. An ink pattern that can be visually confirmed appears on the exposed surface of the porous separation layer (B 1 ). The pattern of the ink composition provided on the surface of the porous layer (B) can be confirmed based on the ink pattern.

以下,詳細地說明本發明之附標籤之樹脂成形品及其製造方法。以下所記載之構成要件之說明係基於本發明之代表性實施態樣而進行者,本發明並不限定於此種實施態樣。再者,於本發明中,「~」係指分別包含其前後所記載之數值作為最小值及最大值之範圍。 《附標籤之樹脂成形品》 將本發明之附標籤之樹脂成形品以圖1所示之附標籤之樹脂成形品3為例進行說明。再者,本發明之附標籤之樹脂成形品之構成並不限定於圖1所示之構成,各部分之形態可適當變更。 本發明之附標籤之樹脂成形品3包括樹脂成形品1、及貼附於該樹脂成形品1之標籤2(參照圖1、2)。 以下,對構成本發明之附標籤之樹脂成形品之各部分進行說明。 <標籤之基本構成>本發明中使用之標籤2如圖3所示包括基層(A)、設置於基層(A)之上之多孔質層(B)、存在於多孔質層(B)之內部之複數個空隙11、及以佔據空隙11之一部分之方式存在之墨水組合物12,其以多孔質層(B)側之表面(多孔質層(B)之與基層(A)相反側之表面)貼附於樹脂成形品1。進而,標籤2在貼附於樹脂成形品1之狀態下,於自多孔質層(B)之端面以多孔質層(B)沿厚度方向成為2部分之方式形成切口,並以該切口擴大之方式拉伸基層(A)而自樹脂成形品1將該標籤2剝離時,如圖4、5所示,多孔質層(B)分離為在貼附於樹脂成形品1之狀態下殘留之第1多孔質分離層(B1 )、與伴隨基層(A)而剝離之第2多孔質分離層(B2 ),並且於第1多孔質分離層(B1 )之與樹脂成形品1相反側之表面出現由墨水組合物12形成之可藉由目視進行確認之第1墨水圖案(P1 )。 本發明中之「以佔據空隙之一部分之方式存在之墨水組合物」之所謂「以佔據空隙之一部分之方式存在」係指於多孔質層(B)所具有之複數個空隙之至少一部分中,墨水組合物以佔據該空隙空間之一部分之方式存在。存在墨水組合物之空隙可為多孔質層(B)所具有之複數個空隙之全部亦可為其中之一部分。又,存在墨水組合物之複數個空隙之中,墨水組合物以佔據空隙之一部分之方式存在時,可為該複數個空隙之全部亦可為一部分。即,亦可為複數個空隙之一部分經墨水組合物所填充。 關於以佔據該多孔質層(B)之空隙之一部分之方式存在之墨水組合物,例如供給至多孔質層(B)之與基層(A)相反側之表面的墨水組合物自該表面上之空隙之開口部滲透至內部而被多孔質層(B)之內部所吸收。於本發明中,「第1墨水圖案(P1 )」可藉由目視進行確認。此處,所謂「可藉由目視進行確認」係指健康且具有標準視力(例如無色覺異常、修正視力為0.7以上、無極端散光之視力)者肉眼觀察該物時,可確認(視認)該物存在於此。於以下之說明中,有時將多孔質層(B)之與基層(A)相反側之表面僅表示為「表面」。又,將藉由如上所述般自樹脂成形品1將標籤2剝離而出現於表面之露出面、即第1多孔質分離層(B1 )之與樹脂成形品1相反側之表面、及第2多孔質分離層(B2 )之與基層(A)相反側之表面稱為「斷裂面」。將第1多孔質分離層(B1 )之斷裂面中形成有「第1墨水圖案(P1 )」之區域(印刷區域)稱為「圖案形成區域」或「第1墨水圖案形成區域」,將未形成「第1墨水圖案(P1 )」之區域(留白區域)21稱為「圖案未形成區域」或「第1墨水圖案未形成區域」。於第2多孔質分離層(B2 )之斷裂面,可藉由目視進行確認之墨水圖案(「第2墨水圖案(P2 )」)可出現亦可不出現。如圖5所示,於在第2多孔質分離層(B2 )之斷裂面出現「第2墨水圖案(P2 )」之情形時,將該斷裂面中形成有「第2墨水圖案(P2 )」之區域(印刷區域)稱為「圖案形成區域」或「第2墨水圖案形成區域」,將未形成「第2墨水圖案(P2 )」之區域(留白區域)22稱為「圖案未形成區域」或「第2墨水圖案未形成區域」。又,如圖4所示,於在第2多孔質分離層(B2 )之斷裂面未出現「第2墨水圖案(P2 )」之情形時,將該斷裂面中與第1墨水圖案(P1 )為鏡像關係之區域稱為「墨水圖案對應區域(P')」,將其以外之區域(留白區域)22稱為「圖案未形成區域」或「第2墨水圖案未形成區域」。於本發明中,作為表示墨水圖案「可藉由目視進行確認」之一般指標,觀察面中之該墨水圖案之形成區域(印刷區域)與未形成區域(留白區域)之間所測得之色差ΔE較佳為3以上。以下,對本發明中使用之標籤之各層進行說明。 [基層(A)] 基層(A)係其自身之強度高於下述多孔質層(B)之強度,其具有於持(A)層而將標籤剝離時其自身內不斷裂之強度。更具體而言,較佳為基層(A)自身之凝集力(剝離強度或拉伸斷裂強度)為200 gf/15 mm以上。基層(A)之材料並無特別限定,但較佳為包含熱塑性樹脂。又,基層(A)可透明,可半透明,亦可不透明。 (熱塑性樹脂) 基層(A)所使用之熱塑性樹脂之種類並無特別限制。例如,可使用高密度聚乙烯、中密度聚乙烯、低密度聚乙烯、丙烯系樹脂、聚甲基-1-戊烯、乙烯-環狀烯烴共聚物等聚烯烴系樹脂、乙烯-乙酸乙烯酯共聚物、乙烯-丙烯酸共聚物、順丁烯二酸改性聚乙烯、順丁烯二酸改性聚丙烯等含官能基之聚烯烴系樹脂、尼龍-6、尼龍-6,6等聚醯胺系樹脂、聚對苯二甲酸乙二酯或其共聚物、聚對苯二甲酸丁二酯、聚丁二酸丁二酯、聚乳酸、脂肪族聚酯等熱塑性聚酯系樹脂、聚碳酸酯、無規聚苯乙烯、對排聚苯乙烯等。該等熱塑性樹脂之中,較佳為使用加工性優異之聚烯烴系樹脂、含有官能基之聚烯烴系樹脂。作為聚烯烴系樹脂之更具體之例,可列舉乙烯、丙烯、丁烯、丁二烯、異戊二烯、氯丁二烯、甲基-1-戊烯、環狀烯烴等烯烴類之均聚物、及包含該等烯烴類之2種以上之共聚物。 作為含官能基之聚烯烴系樹脂之更具體之例,可列舉與含有可與上述烯烴類共重合之官能基之單體的共聚物。作為該含有官能基之單體,尤其具有代表性者為苯乙烯、α-甲基苯乙烯等苯乙烯類、乙酸乙烯酯、乙烯醇、丙酸乙烯酯、丁酸乙烯酯、新戊酸乙烯酯、己酸乙烯酯、月桂酸乙烯酯、硬脂酸乙烯酯、苯甲酸乙烯酯、丁基苯甲酸乙烯酯、環己羧酸乙烯酯等羧酸乙烯酯類、丙烯酸、甲基丙烯酸、(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸丁酯、(甲基)丙烯酸己酯、(甲基)丙烯酸辛酯、(甲基)丙烯酸2-乙基己酯、(甲基)丙烯酸硬脂酯、(甲基)丙烯酸苄酯、(甲基)丙烯酸環己酯、(甲基)丙烯酸異冰片酯、(甲基)丙烯酸二環戊酯、(甲基)丙烯醯胺、N-羥甲基(甲基)丙烯醯胺等(甲基)丙烯酸酯類((甲基)丙烯酸酯係指丙烯酸酯及甲基丙烯酸酯)、甲基乙烯醚、乙基乙烯醚、丙基乙烯醚、丁基乙烯醚、環戊基乙烯醚、環己基乙烯醚、苄基乙烯醚、苯基乙烯醚等乙烯醚類。可使用自該等含有官能基之單體之中視需要適當選擇1種或2種以上進行聚合而成者。進而亦可將該等聚烯烴系樹脂及含官能基之聚烯烴系樹脂根據必要進行接枝改性而使用。 接枝改性時,可使用公知之手法。作為具體例,可列舉利用不飽和羧酸或其衍生物進行之接枝改性。作為該不飽和羧酸,例如可列舉丙烯酸、甲基丙烯酸、順丁烯二酸、反丁烯二酸、衣康酸等。又,作為上述不飽和羧酸之衍生物,亦可使用酸酐、酯、醯胺、醯亞胺、金屬鹽等。具體而言,可列舉:順丁烯二酸酐、衣康酸酐、甲基順丁烯二酸酐、丙烯酸甲酯、丙烯酸乙酯、甲基丙烯酸甲酯、甲基丙烯酸乙酯、丙烯酸丁酯、甲基丙烯酸丁酯、丙烯酸縮水甘油酯、甲基丙烯酸縮水甘油酯、順丁烯二酸單乙基酯、順丁烯二酸二乙基酯、反丁烯二酸單甲基酯、反丁烯二酸二甲基酯、衣康酸單甲基酯、衣康酸二乙基酯、丙烯醯胺、甲基丙烯醯胺、順丁烯二酸單醯胺、順丁烯二酸二醯胺、順丁烯二酸-N-單乙基醯胺、順丁烯二酸-N,N-二乙基醯胺、順丁烯二酸-N-單丁基醯胺、順丁烯二酸-N,N-二丁基醯胺、反丁烯二酸單醯胺、反丁烯二酸二醯胺、反丁烯二酸-N-單乙基醯胺、反丁烯二酸-N,N-二乙基醯胺、反丁烯二酸-N-單丁基醯胺、反丁烯二酸-N,N-二丁基醯胺、順丁烯二醯亞胺、N-丁基順丁烯二醯亞胺、N-苯基順丁烯二醯亞胺、丙烯酸鈉、甲基丙烯酸鈉、丙烯酸鉀、甲基丙烯酸鉀等。接枝改性物較佳為將接枝單體以相對於聚烯烴系樹脂及含官能基之聚烯烴系樹脂為通常0.005~10重量%、較佳為0.01~5重量%進行接枝改性而成者。 作為基層(A)之熱塑性樹脂,自上述熱塑性樹脂之中可選擇1種單獨使用,亦可選擇2種以上組合而使用。進而於該等聚烯烴系樹脂及含官能基之聚烯烴系樹脂之中,就耐化學品性、成本方面等而言,較佳為丙烯系樹脂。作為丙烯系樹脂,較理想為使用如下共聚物作為主成分:以為丙烯均聚物且同排或對排及顯示各種程度之立體規則性之聚丙烯、丙烯為主成分,並使其與乙烯、1-丁烯、1-己烯、1-庚烯、4-甲基-1-戊烯等α-烯烴共重合而成。該共聚物可為2元系亦可為3元系以上,又,可為無規共聚物或嵌段共聚物。較佳為,於丙烯系樹脂中調配2~25重量%熔點低於丙烯均聚物之樹脂而使用。作為此種熔點較低之樹脂,可例示高密度或低密度之聚乙烯。 基層(A)中,除熱塑性樹脂以外,視需要可添加無機微細粉末、有機填料、熱穩定劑(抗氧化劑)、光穩定劑、分散劑、潤滑劑等。於添加無機微細粉末之情形時,使用平均粒徑通常為0.01~15 μm、較佳為0.1~5 μm者。具體而言,可使用碳酸鈣、煅燒黏土、氧化矽、矽藻土、白土、滑石、氧化鈦、硫酸鋇、氧化鋁、沸石、雲母、絹雲母、膨潤土、海泡石、蛭石、白雲石、矽灰石、玻璃纖維等。 於添加有機填料之情形時,較佳為選擇與作為主成分之熱塑性樹脂不同種類之樹脂。例如,於熱塑性樹脂膜為聚烯烴系樹脂膜之情形時,作為有機填料,為聚對苯二甲酸乙二酯、聚對苯二甲酸丁二酯、聚碳酸酯、尼龍-6、尼龍-6,6、環狀聚烯烴、聚苯乙烯、聚甲基丙烯酸酯等聚合物,可使用具有高於聚烯烴系樹脂之熔點(例如170~300℃)或玻璃轉移溫度(例如170~280℃)、且不相溶者。有機填料較佳為製成有機微細粉末而使用。關於有機填料之平均分散粒徑,就與熱塑性樹脂之混合容易度或孔隙成形性而言,較佳為0.01 μm以上,更佳為0.1 μm以上,進而較佳為0.5 μm以上。又,有機填料之平均分散粒徑較佳為30 μm以下,更佳為15 μm以下,進而較佳為5 μm以下。 關於無機微細粉末與有機填料之合計添加量,將基層(A)整體設為100重量%,通常為70重量%以下,較佳為60重量%以下,更佳為50重量%以下。於添加無機微細粉末與有機填料之情形時,添加量之下限值通常設為0.1重量%以上,較佳為3重量%以上,更佳為10重量%以上。 於添加熱穩定劑之情形時,將基層(A)整體設為100重量%,通常於0.001~1重量%之範圍內進行添加。具體而言,可使用位阻酚系、磷系、胺系等穩定劑等。於使用光穩定劑之情形時,通常於0.001~1重量%之範圍內使用。具體而言,可使用位阻胺系或苯并三唑系、二苯甲酮系光穩定劑等。分散劑或潤滑劑例如可為了使無機微細粉末分散而使用。添加量通常設為0.01~4重量%之範圍內。具體而言,可使用矽烷偶合劑、油酸或硬脂酸等高級脂肪酸、金屬皂、聚丙烯酸、聚甲基丙烯酸或其等之鹽等。 基層(A)之層厚通常為30~500 μm、較佳為70~300 μm之範圍。若為30 μm以上,則於製成模內成形用標籤而貼附於樹脂成形品時具有充分之剛度,因此有如下傾向:不易產生黏貼褶皺而易漂亮地貼附於成形品,且於剝離時亦不易斷裂。若為500 μm以下,則模內成形用標籤之剛度不會過高,存在易將該標籤保持於模具內之傾向。 (多層化) 基層(A)可為單層結構,亦可為2層以上之多層結構。藉由基層(A)之多層化,可附加記錄性、印刷適性、耐摩擦性、2次加工適性等各種功能。 於將基層(A)製成多層結構之情形時,下述與多孔質層(B)相接之層即(A1)層之無機微細粉末及有機填料之合計含量較理想為與多孔質層(B)相比少5重量%以上、較佳為10重量%以上。藉由(A1)層之無機微細粉末及有機填料之合計含量相對於多孔質層(B)低5重量%以上,而多孔質層(B)與(A1)層之孔隙率出現差異,於將標籤自樹脂成形品剝離時可使破壞容易僅擴大至多孔質層(B)。具體而言,(A1)層較佳為包含熱塑性樹脂35~100重量%、較佳為40~100重量%、無機微細粉末及有機填料至少一者0~65重量%、較佳為0~60重量%。 關於該多層結構之延伸軸數,例如於2層結構之情形時,作為表面層/(A1)層,可例示無延伸/1軸、無延伸/2軸、1軸/1軸、1軸/2軸、2軸/1軸、2軸/2軸。 [多孔質層(B)] 本發明中之多孔質層(B)係具有大量面向該多孔質層(B)之表面而開口之微細空隙的層,且於空隙之內部存在墨水組合物。存在於空隙內之墨水組合物、例如供給至多孔質層(B)之與基層(A)相反側之表面之墨水組合物,其自面向多孔質層(B)之表面的空隙之開口滲透至內部,而被吸收至多孔質層(B)內。此處,例如,如圖2所示,於在貼附前之標籤2之多孔質層(B)之表面形成有由墨水組合物12形成之墨水圖案(P)的情形時,墨水組合物12保持其圖案而被吸收至多孔質層(B)內。於該情形時,藉由下述之機制,而於將標籤剝離後之樹脂成形品3上可藉由目視而確認該墨水圖案(P)之反轉圖案作為第1墨水圖案(P1 )。又,於墨水組合物12滲透至多孔質層(B)之相對較深之位置之情形時,於被剝離之標籤上可確認對應於該墨水圖案(P)之第2墨水圖案(P2 )。 根據上述多孔質層(B),於將標籤作為模內成形用標籤而貼附於樹脂成形品之情形時,於樹脂成形品之成形時熔融樹脂因樹脂壓力而進入至多孔質層(B)表面之開口部,可藉由該抓固效果而將標籤貼附於樹脂成形品。因此,無論樹脂成形品為何素材,均可將標籤貼附於樹脂成形品。又,多孔質層(B)相比於基層(A)為脆性且強度較弱之層,若拉伸基層(A)而將標籤自樹脂成形品剝離,則與此同時,多孔質層(B)容易地發生凝集破壞,而分離為在貼附於樹脂成形品之狀態下殘留之樹脂成形品側部分(第1多孔質分離層(B1 ))、與伴隨基層(A)而剝離之基層側部分(第2多孔質分離層(B2 ))。因此,可容易地將基層(A)自附標籤之樹脂成形品剝離。 又,本發明中之多孔質層(B)於內部具有大量連通之空隙(連通孔),因此,於將該標籤貼附於樹脂成形品時,即便空氣殘存於標籤與樹脂成形品之間,空氣亦經由連通孔被樹脂擠出而排出至外部,因此,不會殘留於兩者間而於標籤產生鼓包。 於是,於本發明中之多孔質層(B)中,尤其藉由於該空隙之內部存在墨水組合物,而於在貼附於樹脂成形品之狀態下殘留之第1多孔質分離層(B1 )之斷裂面出現由墨水組合物形成之第1墨水圖案(P1 ),且可藉由目視而確認該第1墨水圖案(P1 )。因此,如圖2所示,於按表示特定資訊之墨水圖案(P)對多孔質層(B)之表面供給墨水組合物之情形時,如圖4、5所示,於第1多孔質分離層(B1 )之斷裂面以該墨水圖案(P)之反轉圖案出現第1墨水圖案(P1 ),且可根據該圖案得知資訊。藉此,根據該得知之資訊,對標籤經剝離之樹脂成形品進行特定而防止該樹脂成形品之再利用或偽造等,可賦予更多功能。 又,於處在多孔質層(B)之相對較深之位置的空隙內亦存在墨水組合物之情形時,如圖5所示,於伴隨基層(A)而剝離之第2多孔質分離層(B2 )之斷裂面出現與第1墨水圖案(P1 )為鏡像關係之第2墨水圖案(P2 ),且可藉由目視而確認該第2墨水圖案(P2 )。於該情形時,根據自第2墨水圖案(P2 )得知之資訊,對標籤經剝離之樹脂成形品進行特定而防止該樹脂成形品之再利用或偽造,或將剝下之標籤作為優惠券等進行二次利用等,可賦予更多功能。 多孔質層(B)之素材並無特別限定,較佳為使用如下延伸膜,其係將包含結晶性聚丙烯樹脂及與該結晶性聚丙烯樹脂不相溶性之熱塑性樹脂的摻混物、與微細粉末的樹脂膜至少沿1軸方向進行延伸而得。 本發明之附標籤之樹脂成形品的標籤之剝離係藉由多孔質層(B)之破壞(凝集破壞)而進行。此處,若作為樹脂材料而使用至少2種相互不相溶之樹脂,且保持使該樹脂之摻混物相分離之狀態進行延伸而獲得多孔質層(B),則於該多孔質層(B)破壞時,不僅於上述空隙之界面發生剝離,於該等樹脂間之界面亦發生剝離,而可將多孔質層(B)以均勻之面狀進行剝離。 又,多孔質層(B)藉由包含無機微細粉末、較佳為表面經親水化處理之無機微細粉末,可獲得良好之印刷適性。 (調配比率) 作為多孔質層(B),於使用將包含把結晶性聚丙烯樹脂及與該結晶性聚丙烯樹脂不相溶性之熱塑性樹脂混合而獲得之摻混物、與微細粉末之樹脂膜至少沿1軸方向進行延伸而得的延伸膜之情形時,多孔質層(B)中,結晶性聚丙烯樹脂及與該結晶性聚丙烯樹脂不相溶性之熱塑性樹脂之摻混物之含量於將多孔質層(B)整體設為100重量%時,較佳為30~60重量%,更佳為35~50重量%。又,多孔質層(B)中之微細粉末之含量較佳為40~70重量%,更佳為50~65重量%。若多孔質層(B)中之微細粉末之含量為40重量%以上,則容易獲得充分之剝離性。又,若為70重量%以下,則容易獲得成形穩定性。 於該摻混物中,與結晶性聚丙烯樹脂不相溶性之熱塑性樹脂之調配比率係相對於結晶性聚丙烯樹脂100重量份較佳為105~300重量份,更佳為120~280重量份,進而較佳為140~270重量份。 (結晶性聚丙烯樹脂) 結晶性聚丙烯樹脂較佳為使用如下者:其為上述之丙烯系樹脂,且其結晶化度為65%以上。結晶性聚丙烯之結晶化度更佳為66%以上,尤佳為67~80%。若結晶化度為65%以上,則結晶性聚丙烯樹脂之非晶部與熱塑性樹脂之相溶難以進行而容易獲得所期待之界面剝離效果,而可適度減小剝離所需之應力(剝離強度)。又,若結晶化度為80%以下,則容易購入。 於本說明書中,結晶性聚丙烯樹脂中之結晶化度可以如下方式算出:將該樹脂樣本於設定為105℃之烘箱中實施90分鐘退火處理後,於溫度23℃之條件下,利用密度梯度管法或水中置換法(兩者可利用換算式相互修正)求出結晶性聚丙烯樹脂之密度,並根據該密度使用下述式(1)算出。 [數1]

Figure TW201805175AD00001
(上述式(1)中,ρS為結晶性聚丙烯樹脂之密度,ρC為理論上求得之聚丙烯樹脂之結晶部之密度(0.938 g/cm3 ),ρA為理論上求得之聚丙烯樹脂之非晶部之密度(0.852 g/cm3 )) 因此,為了達成上述之結晶化度,多孔質層(B)中使用之結晶性聚丙烯樹脂之密度較佳為0.906 g/cm3 以上,更佳為0.907 g/cm3 以上,尤佳為0.908 g/cm3 以上。 (與結晶性聚丙烯樹脂不相溶性之熱塑性樹脂) 與該結晶性聚丙烯樹脂不相溶性之熱塑性樹脂可列舉:聚乙烯樹脂、苯乙烯系樹脂、環狀聚烯烴樹脂、乙烯-環狀烯烴共重合樹脂、丙烯-α-烯烴共重合樹脂、尼龍-6、尼龍-6,6、尼龍-6,10、尼龍-6,12等聚醯胺系樹脂、聚對苯二甲酸乙二酯或其共聚物、聚萘二甲酸乙二酯、聚對苯二甲酸丁二酯、聚丁二酸丁二酯、聚乳酸、脂肪族聚酯等熱塑性聚酯系樹脂、聚碳酸酯等。該等亦可將2種以上混合而使用。該等之中,就耐化學品性或生產成本等觀點而言,較佳為使用聚乙烯樹脂。藉由存在不相溶性之熱塑性樹脂,於延伸膜製作時結晶性聚丙烯樹脂與跟聚丙烯樹脂不相溶性之熱塑性樹脂間發生界面剝離而提高剝離性。若相對於聚丙烯樹脂100重量份而將不相溶性之熱塑性樹脂設為105~300重量份,則容易獲得充分之剝離性。 於本說明書中,所謂「不相溶」係指:以電子顯微鏡對結晶性聚丙烯樹脂與不相溶性之熱塑性樹脂之摻混物進行觀察之情形時,其具有海島結構之形態,且其結構之尺寸為0.3~10 μm。 (微細粉末) 作為該微細粉末,可使用經親水化處理之無機微細粉末、或未經親水化處理之無機微細粉末或有機微細粉末。作為該微細粉末,可僅使用經親水化處理之無機微細粉末,可僅使用未經親水化處理之無機微細粉末或有機微細粉末,亦可將經親水化處理之無機微細粉末與未經親水化處理之無機微細粉末及/或有機微細粉末組合而使用。 作為該無機微細粉末,可例示重質碳酸鈣、輕質碳酸鈣、煅燒黏土、滑石、氧化鈦、硫酸鋇、氧化鋅、氧化鎂、矽藻土、氧化矽等無機微細粉末、於無機微細粉末之核之周圍具有鋁氧化物或氫氧化物之複合無機微細粉末、中空玻璃珠等。其中,重質碳酸鈣、煅燒黏土、矽藻土由於價廉且於延伸時可形成大量孔隙,故而較佳。 作為該有機微細粉末,較佳為選擇與多孔質層(B)中使用之熱塑性樹脂不同種類之樹脂。例如,較佳為使用如下者:其為聚對苯二甲酸乙二酯、聚對苯二甲酸丁二酯、聚碳酸酯、尼龍-6、尼龍-6,6、環狀聚烯烴、聚苯乙烯、聚甲基丙烯酸酯等聚合物,具有與多孔質層(B)中使用之熱塑性樹脂相比較高之熔點或玻璃轉移溫度,且不相溶。例如,可使用與聚丙烯樹脂相比具有較高之熔點(例如170~300℃)或玻璃轉移溫度(例如170~280℃)、且不相溶者。 作為本發明中之微細粉末,較佳為至少使用將上述所例示之無機微細粉末利用表面處理劑對表面進行過親水化處理者。 若使用表面經親水化處理之無機微細粉末形成多孔質層(B),則該多孔質層(B)表面之印刷適性提高而可獲得美麗之附標籤之成形品,同時,由該等所形成之多孔質層(B)更容易發生無機微細粉末與結晶性聚丙烯之界面剝離,因此,可更容易地提供可與成形品分離之模內成形用標籤。 作為該表面處理劑,可列舉:水溶性陰離子系界面活性劑、水溶性陽離子系界面活性劑、及水溶性非離子系界面活性劑。 作為該界面活性劑之具體例,例如作為水溶性陰離子系界面活性劑,可列舉:具有碳數4~40之範圍之烴基之磺酸鹽、具有碳數4~40之範圍之烴基之磷酸酯鹽、碳數4~40之範圍之高級醇之磷酸單酯或二酯之鹽、具有碳數4~40之範圍之烴基之烷基甜菜鹼或烷基磺基甜菜鹼等。例如,作為水溶性陽離子系界面活性劑,可列舉:二烯丙基胺鹽、碳數1~4之範圍之烷基二烯丙基胺鹽及二烷基二烯丙基胺鹽、即甲基二烯丙基胺鹽或乙基二烯丙基胺鹽、二甲基二烯丙基胺鹽、甲基丙烯醯氧基乙基三甲基銨、丙烯醯氧基乙基三甲基銨、甲基丙烯醯氧基乙基二甲基乙基銨或丙烯醯氧基乙基二甲基乙基銨之氯化物、溴化物、甲基硫酸鹽或乙基硫酸鹽、將甲基丙烯酸N,N-二甲胺基乙酯或丙烯酸N,N-二甲胺基乙酯以表氯醇、去水甘油、縮水甘油基三甲基氯化銨等環氧化合物進行烷基化而獲得之4級銨鹽。該等之中,較佳為二烯丙基胺鹽、甲基二烯丙基胺鹽及二甲基二烯丙基胺鹽。例如,作為水溶性非離子系界面活性劑,可列舉:丙烯醯胺、甲基丙烯醯胺、N-乙烯基甲醯胺、N-乙烯基乙醯胺、N-乙烯基吡咯啶酮、甲基丙烯酸2-羥基乙酯、丙烯酸2-羥基乙酯、(甲基)丙烯酸2-羥基酯、(甲基)丙烯酸3-羥基丙酯、(甲基)丙烯酸甲酯、(甲基)丙烯酸乙酯、(甲基)丙烯酸丁酯。該等之中,較佳為丙烯醯胺、甲基丙烯醯胺。 作為無機微細粉末之表面處理方法,例如可列舉如下方法:於相對於粒徑為10~50 μm之碳酸鈣粗粒子100重量份為必要量之表面處理劑之存在下,於水性介質中進行濕式粉碎,而製成所需之粒徑。具體而言,以碳酸鈣/水性介質(具體而言為水)之重量比為70/30~30/70、較佳為60/40~40/60之範圍之方式對碳酸鈣添加水,並向其中添加相對於碳酸鈣100重量份為0.01~10重量份、較佳為0.1~5重量份之表面處理劑,利用常法進行濕式粉碎。進而,亦可準備將上述範圍之量之表面處理劑預先溶解而成之水性介質,將該水性介質與碳酸鈣混合,利用常法進行濕式粉碎。濕式粉碎可為批次式或連續式,可使用利用了砂磨機、粉碎機、球磨機等粉碎裝置之研磨等。 作為該等經表面處理劑進行過表面處理之無機微細粉末之具體例,例如可列舉Fimatec公司製造之商品名「AFF」等。 本發明之多孔質層(B)中,除了上述表面經親水化處理之無機微細粉末,亦較佳為將表面未經親水化處理之無機微細粉末或有機微細粉末組合而進行調配。關於調配比率,於將使用之微細粉末設為100重量%時,較佳為,將表面經親水化處理之無機微細粉末設為50~99.9重量%、且將表面未經親水化處理之無機微細粉末及有機微細粉末之至少一者設為0.1~50重量%,更佳為將表面經親水化處理之無機微細粉末設為55~80重量%、且將表面未經親水化處理之無機微細粉末及有機微細粉末之至少一者設為20~45重量%。多孔質層(B)中,表面未經親水化處理之無機微細粉末及有機微細粉末之含量較佳為設為0.1~30重量%。 此處,所謂「表面未經親水化處理之無機微細粉末」係指未利用上述表面處理劑有意地實施親水化處理之無機微細粉末係指經過通常之粉碎、分級、沈澱等製程所獲得之無機微細粉末。例如,若將經親水化處理之碳酸鈣微細粉末與通常之重質碳酸鈣微細粉末混合,則可調整自多孔質層(B)之溶出物量,例如,若將經親水化處理之碳酸鈣微細粉末與有機微細粉末組合,則可調整吸水性。即便於此種調配不同種類之微細粉末之情形時,多孔質層(B)中所含之微細粉末之總量超過70重量%時吸水易剝離性膜之延伸成形性惡化而有損成形穩定性,因此欠佳。 (分散劑) 又,本發明之多孔質層(B)中,為了使無機微細粉末均勻地微分散,較佳為含有分散劑。 作為無機微細粉末之分散劑,例如可例示酸改性聚烯烴、矽烷醇改性聚烯烴等。於本發明中,尤佳為使用順丁烯二酸改性聚烯烴及矽烷醇改性聚丙烯。 作為該酸改性聚烯烴,可列舉:使順丁烯二酸酐進行無規共重合或接枝共重合而成之含酸酐基聚烯烴、或者使甲基丙烯酸、丙烯酸等不飽和羧酸進行無規共重合或接枝共重合而成之含羧酸基聚烯烴、使甲基丙烯酸縮水甘油酯進行無規共重合或接枝共重合而成之含環氧基聚烯烴等。作為具體例,可列舉:順丁烯二酸酐改性聚丙烯、順丁烯二酸酐改性聚乙烯、丙烯酸改性聚丙烯、乙烯-甲基丙烯酸無規共聚物、乙烯-甲基丙烯酸縮水甘油酯無規共聚物、乙烯-甲基丙烯酸縮水甘油酯接枝共聚物、甲基丙烯酸縮水甘油酯改性聚丙烯等,其中尤佳為順丁烯二酸酐改性聚丙烯及順丁烯二酸酐改性聚乙烯。 作為順丁烯二酸酐改性聚丙烯及順丁烯二酸酐改性聚乙烯之具體例,可列舉:三菱化學(股份)製造之Modic AP、商品名「P513V」或商品名「M513」或商品名「P928」,三洋化成工業(股份)製造之商品名「Umex1001」或商品名「Umex1010」或商品名「Umex2000」,三井杜邦化學(股份)製造之HPR、商品名「VR101」。 酸改性聚烯烴之酸改性率較佳為0.01~20%,更佳為0.05~15%。若酸改性率為0.01%以上,則容易充分獲得無機微細粉末向樹脂摻混物中之分散效果。若酸改性率為20%以下,則酸改性聚烯烴之軟化點不會過低,因此與熱塑性樹脂之複合相對容易。 於對多孔質層(B)調配分散劑之情形時,分散劑之含量係相對於無機微細粉末100重量份通常為0.5~30重量份、較佳為1~20重量份。若分散劑之含量為0.5重量份以上,則無機微細粉末會充分地分散,因此容易獲得所需之表面開口率,容易改善液體吸收容積。又,若為30重量份以下,則延伸性良好而可抑制成形時之延伸斷片。 (多孔質層(B)之厚度)多孔質層(B)之層厚通常為0.1~20 μm、較佳為3~18 μm、更佳為6~15 μm、尤佳為7~12 μm之範圍。於該層(B)之厚度過薄之情形時,構成成形品之樹脂之熔融物經由多孔質層(B)內部進入至基層(A)附近,接著強度提高,但即便欲自附標籤之樹脂成形品剝離標籤亦難以使多孔質層(B)內之凝集破壞穩定而進行,有剝離變困難之傾向。又,於該層(B)之厚度過厚之情形時,剝離時之剝離強度並無問題,但剝離位置不穩定而剝離面無法均勻,因此剝離所需之應力不穩定,又,樹脂成形品及被剝離之膜兩者之表面殘留凹凸,有即便於多孔質層(B)側實施印刷亦無法清楚可見之傾向。多孔質層(B)為至少沿1軸方向被延伸之延伸樹脂膜層。可獲得藉由延伸成形而形成表面開口或內部孔隙,藉由樹脂之配向而容易均勻地剝離之層(B),同時,獲得厚度取得均勻性之多孔質層(B)。 (多孔質層(B)表面之開口率) 多孔質層(B)之表面開口率較佳為7~60%,更佳為12~50%,尤佳為15~40%。若表面開口率為7%以上,則有容易獲得充分之接著性之傾向。若表面開口率為60%以下,則於下述之延伸成形時多孔質層(B)不易斷裂而可成形穩定之積層樹脂膜。 本發明中之「表面開口率」係表示以電子顯微鏡對多孔質層(B)側之面進行觀察時觀察區域中孔隙所占之面積比率。具體而言,可藉由如下方式而求出:自附標籤之樹脂成形品或標籤之試樣截取任意之一部分,貼附於觀察試樣台,對其觀察面蒸鍍金或金-鈀等,並使用電子顯微鏡(例如日立製作所(股份)製造之掃描型顯微鏡S-2400)以容易進行觀察之任意倍率(例如擴大至500倍~3000倍)對表面之孔隙進行觀察。進而,對所觀察之區域拍攝照片等,將孔隙描繪於描圖膠片並將塗妥的圖以圖像解析裝置(Nireco(股份)製造:型號Luzex IID)進行圖像處理,以孔隙之面積率作為多孔質層(B)表面之開口率。 多孔質層(B)之表面開口率可藉由如下方式進行控制:將成為多孔質層(B)之樹脂組合物層進行延伸後,進行熱處理,並調整其熱處理溫度。 (多孔質層(B)之厚度方向之剖面空隙率)多孔質層(B)之厚度方向之剖面空隙率較佳為30~70%,更佳為31~60%,進而較佳為33~55%,尤佳為35~50%。若厚度方向之剖面空隙率為30%以上,則多孔質層(B)中之墨水組合物之吸收容量增大,因此可更容易地確認出現於藉由多孔質層(B)之凝集破壞而分離之樹脂成形品側之第1多孔質分離層(B1 )之斷裂面的第1墨水圖案(P1 )、以及出現於基層(A)側之第2多孔質分離層(B2 )之斷裂面的第2墨水圖案(P2 )。又,若厚度方向之剖面空隙率為30%以上,則有容易獲得充分之接著性之傾向。另一方面,若厚度方向之剖面空隙率為70%以下,則於下述之延伸成形時多孔質層(B)不易斷裂而可成形穩定之積層樹脂膜。多孔質層(B)之厚度方向之剖面空隙率較佳為高於基層(A)之厚度方向之剖面空隙率。藉此,拉伸基層(A)自樹脂成形品將標籤剝離時,多孔質層(B)較基層(A)優先發生凝集破壞,而容易保持基層(A)之形狀並且將多孔質層(B)分離為第1多孔質分離層(B1 )與第2多孔質分離層(B2 )。又,藉由多孔質層(B)之厚度方向之凝集破壞穩定化,於第1多孔質分離層(B1 )之斷裂面以及第2多孔質分離層(B2 )之斷裂面,墨水圖案形成區域與墨水圖案未形成區域之對比明顯地顯現,變得容易確認第1墨水圖案(P1 )及第2墨水圖案(P2 )。本發明中之「厚度方向之剖面空隙率」可藉由如下方式而獲得:對多孔質層(B)剖面拍攝電子顯微鏡照片,求出該照片所拍攝之剖面區域內孔隙所占之面積比率(%)。具體而言,自附標籤之樹脂成形品或標籤之試樣切割任意一部分,以環氧樹脂進行包埋並使之固化後,使用切片機製作相對於膜之厚度方向平行(即垂直於面方向)之切割面,對該切割面蒸鍍進行金屬化後,對於以放大成上述電子顯微鏡容易觀察之任意倍率(例如500倍~3000倍)拍攝所得之照片進行二值化處理,以上述圖像解析裝置進行圖像處理,求出孔隙佔據測定範圍之面積比率(%)作為厚度方向之剖面空隙率(%)。多孔質層(B)之厚度方向之剖面空隙率可藉由調整將成為多孔質層(B)之樹脂組合物進行橫向延伸時之延伸溫度進行控制。 (多孔質層(B)表面之算數平均粗糙度) 多孔質層(B)表面之算數平均粗糙度Ra較佳為0.3~1.8 μm,更佳為0.5~1.6 μm,尤佳為0.7~1.4 μm。若算數平均粗糙度為0.3 μm以上,則獲得樹脂因成形品樹脂成形時之樹脂壓力而進入至多孔質層(B)表面之凹凸的嵌合效果,可有助於提高接著力。若算數平均粗糙度為1.8 μm以下,則實施印刷時亦不會因由凹凸導致之漏點等招致畫質降低。 本發明中之「算數平均粗糙度」係基於JIS-B0601之規定,使用表面粗糙度計(小阪研究所(股份)製造、商品名:SURFCORDER SE30)進行測定。 (多孔質層(B)之吸油性) 於本說明書中,所謂多孔質層(B)之吸油性,係將JAPAN TAPPI 67-2000中所規定之吸油度試驗方法改變一部分所測定的一定條件下吸油所需之時間。具體而言,除了如下操作之外,依據JAPAN TAPPI 67-2000中所規定之吸油度試驗方法進行測定:自滴定管對多孔質層(B)之表面滴加礦油20 μm,使用5片試驗片,測定恢復至輥通過試驗片之上時檢流計指針之值所需之時間代替測定降低至自僅試驗片之情形時之讀數增加5個刻度時所需之時間。可推測,該時間越短,吸油性越高,墨水組合物越易滲透。吸油性較佳為200秒以下,更佳為100秒以下,進而較佳為60秒以下。 [墨水組合物]墨水組合物存在於多孔質層(B)之空隙之內部。關於其存在狀態或功能,可參照多孔質層(B)之項。於本發明中,墨水組合物可為包含色材(著色劑)之有色液狀材料,亦可為實質上不含色材之無色液狀材料。此處,所謂墨水組合物「實質上不含色材」係指並不有意對墨水組合物中調配色材,具體而言係指墨水組合物中之色材之含量為0.1質量%以下。墨水組合物實質上不含色材之情形時之「色材」的說明及範圍、具體例,可參照下述墨水組合物包含色材之情形時之色材的說明及範圍、具體例。實質上不含色材之無色之墨水組合物較佳為無色透明。作為墨水組合物,可列舉:油性膠版墨水、UV硬化型膠版墨水、凹版墨水、水性柔版墨水、UV柔版墨水、油性網版墨水、UV網版墨水、水性噴墨墨水、油性噴墨墨水、UV噴墨墨水等,就黏度較低、容易滲透至多孔質層之空隙之內部而言,較佳為凹版墨水、柔版墨水、噴墨墨水。於墨水組合物含有色材而為有色之情形時,作為色材,可使用呈現黑色、白色、通常之全彩4色或專色之染料或顏料、或呈現金屬效果等之金屬微粉末等。又,色材中亦可包含吸收紫外線或紅外線者、或吸收紫外線或紅外線並發出可見光線者。再者,即便墨水組合物之色材為白色,藉由將樹脂成形品或標籤之基層(A)、多孔質層(B)側以白以外之色進行著色,亦於墨水圖案形成區域與墨水圖案未形成區域之間獲得充分之色差ΔE,而可視認墨水圖案。 色材可使用鹼性染料、酸性染料、直接染料、螢光染料、分散染料、反應性染料等染料,可廣泛使用例如以金屬之氧化物或者硫化物為主成分之無機顏料、或對通常被稱為色澱之溶解之染料添加沈澱劑而使之不溶性而獲得之有機顏料等。 作為具體之無機顏料,可列舉:鈦白(二氧化鈦)、鋅白(氧化鋅)、碳酸鈣、高嶺土、石墨(carbon black)、群青(ultramarine blue)、鐵藍(prussian blue)、黃赭(yellow ocher)、鉻黃(chrome yellow)、鋅黃(zinc yellow)、鈦鎳黃、鉍黃、鎘黃、紅丹(氧化鐵)、紅鉛、朱砂(硫化汞)、鎘紅、沈澱性硫酸鋇、鋇氧粉等。作為有機顏料,除了色澱顏料,亦可列舉多環式系、酞菁系、可溶性偶氮系、不可溶性偶氮系、多偶氮系、染製系者等。 顏料中包括全彩4色顏料、白色顏料、專色顏料、體質顏料,以及珠光顏料(以氧化矽、氧化鈦、氧化鐵等無機鹽進行過表面處理之滑石粒子、高嶺土粒子、雲母粒子、板狀氧化矽、板狀氧化鋁、板狀碳酸鈣等)、金屬粉(青銅粉、青銅漿、漂浮型鋁漿、非漂浮型鋁漿等)等。該等亦可組合而使用。 又,墨水組合物亦可含有著色劑以外之各種添加劑,例如,較佳為含有聚矽氧樹脂作為添加劑。 作為實質上不含色材之無色之墨水組合物,除了實質上不含色材以外,可使用與上述墨水組合物相同組合之液狀材料,此外,低黏度無色墨水(medium)、清漆、透明墨水、隱形墨水、複合墨水等亦可用作實質上不含色材之無色之墨水組合物。又,作為實質上不含色材之無色之墨水組合物之具體例,可列舉UV柔版墨水(商品名:UV Flexo Medium 500、T&K TOKA公司製造)或UV膠版墨水(商品名:UV161 Medium S、T&K TOKA公司製造)等。以下,針對藉由實質上不含色材之無色之墨水組合物出現可目視之墨水圖案的機制進行說明。即,多孔質層(B)通常因層內部之大量空隙而發生透射光擴散反射,因此其不透明性或白色性較高。於該多孔質層(B)之一定區域中,若對該區域內之空隙之內部填充實質上不含色材之無色之墨水組合物,則填充有墨水組合物之區域(墨水圖案形成區域)之不透明性降低,於墨水圖案形成區域與其周圍之墨水圖案未形成區域之間產生不透明性之差異。結果,可將墨水圖案以「水印」之形式進行視認。又,此時,若將樹脂成形品或標籤之基層(A)以白以外之色進行著色,則於墨水圖案形成區域可透視該等色,因此,於墨水圖案形成區域與墨水圖案未形成區域之間獲得充分之色差ΔE,而可更清楚地視認墨水圖案。此處,例如,於使在墨水圖案形成區域可透視樹脂成形品之色之情形時,墨水圖案形成區域與樹脂成形品之色差ΔE越小越佳,較佳為使該色差ΔE未達3,更佳為使之未達2,進而較佳為使之未達1。 [熱密封層] 本發明中使用之標籤視需要亦可於多孔質層側之表面設置有熱密封層。所謂熱密封層,係對標籤與樹脂成形品之接著力進行補強者,其於常溫下為固體狀,因用於在模具內成形樹脂成形品之熔融樹脂之熱而活化,與熔融樹脂熔合,冷卻後再度成為固形狀而可發揮牢固接著力。 構成熱密封層之熱塑性樹脂較佳為藉由DSC測定而作為峰值溫度所求得之熔點為60~130℃。若未達60℃,則因常溫下之黏膩感而標籤之滑動性變差,容易發生黏連等。因此,於將標籤插入至模具時,易頻發2片黏連等故障。又,若超過130℃而較大,則標籤與成形體之接著性容易變差,因此欠佳。 作為具體之熱塑性樹脂之例,為聚烯烴系樹脂,可列舉:低密度或中密度之高壓法聚乙烯、直鏈線狀聚乙烯、乙烯、α-烯烴共聚物、丙烯-α-烯烴光聚合物、乙烯-乙酸乙烯酯共聚物、乙烯-丙烯酸共聚物、乙烯-丙烯酸烷基酯共聚物、乙烯-甲基丙烯酸烷基酯共聚物(烷基之碳數為1~8)、乙烯-甲基丙烯酸共聚物之金屬鹽(Zn、Al、Li、K、Na等)等熔點為60~130℃之聚乙烯系樹脂等。該等樹脂可單獨使用1種,亦可將2種以上混合而使用。 熱密封層中,於不妨礙熱密封層所要求之性能之範圍內,可任意添加其他公知之樹脂用添加劑。作為此種添加劑,可列舉:染料、成核劑、塑化劑、脫模劑、抗氧化劑、抗黏連劑、阻燃劑、紫外線吸收劑、分散劑等。 關於熱密封層之厚度,就獲得對樹脂成形品之充分接著力之觀點而言,較佳為0.1 μm以上,更佳為0.5 μm以上。另一方面,就以片狀進行膠版印刷時、或將標籤插入至模具時使標籤不易捲曲之觀點而言,較佳為20 μm以下,更佳為10 μm以下。 <樹脂成形品> 本發明中使用之樹脂成形品為包含樹脂之成形品即可,就成形容易而言,較佳為包含熱塑性樹脂之成形品。作為熱塑性樹脂,可列舉:聚丙烯樹脂、聚乙烯樹脂、聚苯乙烯樹脂、聚對苯二甲酸乙二酯樹脂等。該等可單獨使用,亦可將複數種組合而使用。 作為樹脂成形品之形態,例如可列舉藉由吹氣成形或射出成形而獲得之容器。 <剝離>本發明之附標籤之樹脂成形品若拉伸基層(A)而自樹脂成形品剝離標籤,則與此同時,多孔質層(B)發生凝集破壞,基層(A)伴隨多孔質層之一部分而剝離。此時,多孔質層(B)分離為在貼附於樹脂成形品之狀態下殘留之第1多孔質分離層(B1 )、與伴隨基層(A)而剝離之第2多孔質分離層(B2 )之2層。此處,本發明中之多孔質層(B)中,藉由在其內部之空隙內存在墨水組合物,而如圖4、5所示,於第1多孔質分離層(B1 )之斷裂面出現第1墨水圖案(P1 )。而且,藉由該斷裂面中形成有第1墨水圖案(P1 )之墨水圖案形成區域(印刷部分)、與未形成第1墨水圖案(P1 )之墨水圖案未形成區域(留白部分)21的充分色差,可藉由目視而確認第1墨水圖案(P1 )。又,於墨水組合物向多孔質層(B)之滲透充分之情形時,如圖5所示,於伴隨基層(A)而剝離之第2多孔質分離層(B2 )之斷裂面出現由墨水組合物形成之第2墨水圖案(P2 )。而且,於該斷裂面中形成有第2墨水圖案(P2 )之墨水圖案形成區域與未形成第2墨水圖案(P2 )之墨水圖案未形成區域22的色差充分之情形時,可藉由目視而確認第2墨水圖案(P2 )。另一方面,於墨水組合物向多孔質層(B)之滲透不充分之情形時,或形成有第2墨水圖案(P2 )之墨水圖案形成區域與未形成第2墨水圖案(P2 )之墨水圖案未形成區域的色差不充分之情形時,如圖4所示,無法藉由目視而確認第2墨水圖案(P2 )。於該情形時,將相當於上述第2墨水圖案(P2 )之區域、即與第1墨水圖案(P1 )互為鏡像關係之區域稱為墨水圖案對應區域(P')。 <剝離強度> 將貼附於樹脂成形品之標籤之基層(A)剝離時,剝離強度(剝離所需之應力)較佳為0.3~1.6 N/15 mm之範圍,更佳為1~1.6 N/15 mm之範圍,尤佳為1.2~1.6 N/15 mm之範圍。該剝離強度顯示貼附於樹脂成形品後剝離基層(A)時所需之強度。剝離較佳為藉由多孔質層(B)內之凝集破壞而均勻面狀地進行。 若剝離強度為0.3 N/15 mm以上,則有貼附於樹脂成形品時不易因來自外部之衝擊而剝離之傾向。若剝離強度為1.6 N/15 mm以下,則不會超過接著劑之強度、或不會超過貼附於樹脂成形品時樹脂成形品之表面強度,因此有容易於多孔質層(B)內發生凝集破壞之傾向。 本說明書中所謂「剝離強度」係援用JIS K 6854-2:1999接著劑-剝離接著強度試驗方法-第2部:180度剝離之剝離力之推定平均值者,其係自樹脂成形品將標籤(基材層(A))剝離時所需之應力。具體而言,對於附標籤之樹脂成形品中,將成形品之標籤貼附部分裁剪為寬度15 mm、長度100 mm,使用拉伸試驗機(島津製作所(股份)製造的商品名「AUTOGRAPH」)以拉伸速度300 mm/分、180°之角度使基層(A)與成形品部分剝離,利用荷重元測定穩定時之應力,據標籤之橫向與縱向上各自之測定值之平均值而求得。 該剝離強度可藉由如下方式達成:使多孔質層(B)中使用之結晶性聚丙烯之結晶化度為65%以上,或向其中摻混特定量之不相溶性之熱塑性樹脂或無機微細粉末;以及將該多孔質層(B)沿至少單軸方向進行延伸。又,該剝離強度較佳為藉由如下方式等進行調整:使用表面經親水化處理者作為上述無機微細粉末;於低於結晶性聚丙烯之結晶化部位之熔點的溫度下實施上述延伸;選定相對低黏度者作為上述熱塑性樹脂;將上述多孔質層(B)之孔隙率設為特定範圍等。 又,多孔質層(B)中之剝離係藉由構成成形品之樹脂之熔融物無滲透之多孔質層(B)部分之破壞而進行,剝離強度係對標籤之多孔質層(B)貼附黏著帶並根據將其剝離時所需之強度之測定值而模擬求出,亦可測量標籤中之多孔質層(B)之實際力。 標籤單獨體中之剝離強度係藉由如下方式求出:對多孔質層(B)面貼附黏著帶(Nichiban(股份)製造之透明膠帶、商品名「Sellotape」、品種名「CT-18」),剪取長度100 mm,使用拉伸試驗機(島津製作所(股份)製造之商品名「AUTOGRAPH」),以拉伸速度300 mm/分、180°之角度,使多孔質層(B)發生基層(A)與黏著帶之剝離,利用荷重元測定剝離穩定時之應力,並根據標籤之橫向與縱向上各自之平均值而求出。藉由該方法所求出之剝離強度較佳為0.4~2.0 N/18 mm,更佳為0.5~1.9 N/18 mm,尤佳為0.6~1.8 N/18 mm。該剝離強度可藉由使用作為剝離標籤(基材層(A))時所需之應力之調整法所記載之上述方法進行調整。 <多孔質分離層之斷裂狀態>本發明之附標籤之樹脂成形品較佳為於標籤之多孔質層之端面以截切刀加工切口而製作剝離部,以拉伸速度100 mm/分將剝離部與樹脂成形品沿相互遠離之方向進行拉伸時,多孔質層(B)於層內並無凹凸而整齊地斷裂,可斷離為第1多孔質分離層(B1 )與第2多孔質分離層(B2 )。關於此處言及之切口或剝離條件之詳細情況,可參照下述「斷裂面之墨水圖案之視認性」一欄。作為多孔質層(B)並無凹凸而整齊地斷裂的標準,可使用藉由自樹脂成形品剝離標籤而露出之表面(樹脂成形品側之斷裂面及剝離之標籤側之斷裂面)中各多孔質分離層(B1 )、(B2 )之殘存面積比率,兩者之該比率越大,意味著多孔質層(B)越無凹凸而整齊地斷裂。具體而言,第1多孔質分離層(B1 )於藉由標籤之剝離而露出之樹脂成形品側之斷裂面較佳為佔據80%以上,該比率更佳為90%以上,進而較佳為95%以上,進而更佳為99%以上,尤佳為100%。又,第2多孔質分離層(B2 )於藉由剝離而露出之標籤側之斷裂面較佳為佔據80%以上,該比率更佳為90%以上,進而較佳為95%以上,進而更佳為99%以上,尤佳為100%。<多孔質分離層之斷裂面中之色差ΔE>本發明之附標籤之樹脂成形品中,自多孔質層(B)之端面以多孔質層(B)沿厚度方向成為2部分之方式形成切口,並以該切口擴大之方式拉伸基層(A),而將標籤自樹脂成形品剝離時,多孔質層(B)分離為在貼附於樹脂成形品之狀態下殘留之第1多孔質分離層(B1 )、與伴隨具有基層(A)之標籤而剝離之第2多孔質分離層(B2 ),並且於第1多孔質分離層(B1 )之與樹脂成形品相反側之表面(斷裂面)出現由墨水組合物形成之第1墨水圖案(P1 )。此處,於第1多孔質分離層(B1 )之斷裂面上,形成有第1墨水圖案(P1 )之墨水圖案形成區域與未形成第1墨水圖案(P1 )之墨水圖案未形成區域的色差ΔE並無特別限制,較佳為3以上,更佳為5以上,進而較佳為10以上。若色差ΔE為3以上,則墨水圖案形成區域與墨水圖案未形成區域之間色差較大,藉此可容易地視認第1墨水圖案(P1 )。藉此,於在多孔質層(B)之表面按表示特定資訊之墨水圖案供給墨水組合物(印刷)之情形時,可由自樹脂成形品剝離標籤後之第1多孔質分離層(B1 )之斷裂面上的第1墨水圖案(P1 )而得知該資訊。如此可於斷裂面上得知資訊,藉此可對附標籤之樹脂成形品賦予進一步之功能,例如:自標籤被剝離之樹脂成形品獲得與賦予至標籤表面之資訊不同之追加資訊;對商品是否為正品進行真假判定;作為應用碼等優惠券而進行二次利用等。又,於使用實質上不含色材之無色之墨水組合物作為形成墨水圖案之墨水組合物之情形時,第1多孔質分離層(B1 )之斷裂面之未形成第1墨水圖案(P1 )之圖案未形成區域與樹脂成形品之表面(附標籤之樹脂成形品中未貼附標籤之部分之表面)之色差ΔEB 、與第1多孔質分離層(B1 )之斷裂面之形成有第1墨水圖案(P1 )之圖案形成區域與樹脂成形品之表面之色差ΔEP 的差(ΔEB -ΔEP )較佳為1~50之範圍內,更佳為3~30之範圍內。即便於使用無色之墨水組合物之情形時,若差(ΔEB -ΔEP )為1以上,則於第1多孔質分離層(B1 )之斷裂面亦可容易地視認第1墨水圖案(P1 )。另一方面,於伴隨具有基層(A)之標籤而剝離之第2多孔質分離層(B2 )之斷裂面上,可形成與第1多孔質分離層(B1 )之第1墨水圖案(P1 )為鏡像關係之第2墨水圖案(P2 )。其源自隨著多孔質層(B)之分離而其內部之墨水組合物層沿厚度方向分為2部分所形成之一者。為了視認第2墨水圖案(P2 ),於第2多孔質分離層(B2 )之與基層(A)相反側之表面(斷裂面)中,形成有第2墨水圖案(P2 )之墨水圖案形成區域與未形成第2墨水圖案(P2 )之圖案未形成區域的色差ΔE較佳為3以上,更佳為5以上,進而較佳為9以上。若色差ΔE為3以上,則墨水圖案形成區域與墨水圖案未形成區域之間之色差較高,藉此可容易地視認第2墨水圖案(P2 )。又,於使用實質上不含色材之無色之墨水組合物作為形成墨水圖案之墨水組合物之情形時,第2多孔質分離層(B2 )之斷裂面上之第2墨水圖案(P2 )亦可無法視認到。第1墨水圖案可視認到,另一方面,第2墨水圖案無法視認之態樣於防偽效果方面更好。即便第2墨水圖案(P2 )無法容易地視認到之態樣,於無色之墨水組合物充分地滲透至多孔質層(B)之情形時,於第2多孔質分離層(B2 )之斷裂面上之第2墨水圖案(P2 )之對應區域亦存在墨水組合物。因此,若對該墨水組合物採用吸收紫外線或紅外線而放出可見光線者等,則可更確實地進行真假判定,可進一步提高防偽效果。再者,於本發明之附標籤之樹脂成形品中,第1墨水圖案(P1 )與第2墨水圖案(P2 )互為鏡像關係。此處,將正像設為第1墨水圖案(P1 )側、或設為第2墨水圖案(P2 )側(將鏡像設為第2墨水圖案(P2 )側、或設為第1墨水圖案(P1 )側)可根據使用者之意向而任意地設定。於欲將正像設為剝下之標籤側之第2墨水圖案(P2 )之情形時,以正像對多孔質層(B)進行印刷即可,相反,於欲將正像設為樹脂成形品側之第1墨水圖案(P1 )之情形時,以預先反轉而獲得之逆像(鏡像)對多孔質層(B)進行印刷即可。第1多孔質分離層(B1 )之表面(斷裂面)或第2多孔質分離層(B2 )之表面(斷裂面)中之「色差ΔE」係針對該墨水圖案形成區域(或墨水圖案對應區域)及墨水圖案未形成區域各者,使用色彩色差計測定明度L 值、及色座標a 值及b 值,並根據該測定值使用下述式而算出。[數2]
Figure TW201805175AD00002
於上述式中,L x 表示墨水圖案形成區域之L 值,L y 表示墨水圖案未形成區域之L 值,a x 表示墨水圖案形成區域之a 值,a y 表示墨水圖案未形成區域之a 值,b x 表示墨水圖案形成區域之b 值,b y 表示墨水圖案未形成區域之b 值。又,圖案未形成區域與樹脂成形品之表面之色差ΔEB 、圖案形成區域與樹脂成形品之表面之色差ΔEP 亦可針對各區域(表面)使用色彩色差計測定明度L 值與色座標a 值及b 值,並根據其測定值依據上述ΔE之算出方法而求得。於該情形時,於上述式中,設為L x 表示求色差之一區域(表面)之L 值,L y 表示求色差之另一區域(表面)之L 值,a x 表示求色差之一區域(表面)之a 值,a y 表示求色差之另一區域(表面)之a 值,b x 表示求色差之一區域之b 值,b y 表示求色差之另一區域(表面)之b 值,算出各色差。 <黏著帶剝離試驗> 於本說明書中,所謂「黏著帶剝離試驗」係如下之試驗:於如上所述般出現於第2多孔質分離層(B2 )表面的第2墨水圖案(P2 )之表面貼附黏著帶之黏著面,將黏著帶以180°、300 mm/min之速度進行剝離後,對第2多孔質分離層(B2 )之表面及黏著帶之黏著面之墨水圖案之視認性進行評價。較佳為,於該黏著帶剝離試驗後,於黏著帶之黏著面可視認第2墨水圖案(P2 )之反轉圖案,並且於第2多孔質分離層(B2 )之表面可視認第2墨水圖案(P2 )。尤其,黏著帶剝離試驗後第2多孔質分離層(B2 )上之第2墨水圖案(P2 )之視認性成為多孔質層(B)中之墨水組合物之滲透深度之指標,第2多孔質分離層(B2 )上視認之第2墨水圖案(P2 )越清晰,意味著多孔質層(B)中之墨水組合物之滲透深度越深。 <附標籤之樹脂成形品、及附多孔質層之樹脂成形品之用途> 本發明之附標籤之樹脂成形品、及貼附有基層(A)及第2多孔質分離層(B2 )剝離後殘留之第1多孔質分離層(B1 )的樹脂成形品(附多孔質層之樹脂成形品)可用作潤滑油、真空泵油、潤滑油(machine oil)、機油(enging oil)、機油(motor oil)等所使用之油用容器(瓶子);家用洗劑、洗衣劑、餐具洗劑、浴缸洗劑、便器用洗劑、管道清潔劑、車用洗劑、柔軟劑、漂白劑、螢光增白劑、潔面劑、液體皂、洗髮精、潤絲精、口腔清潔劑、除臭劑、沐浴液、熨燙用糊劑、消毒液、殺菌劑、殺菌用酒精、拋光蠟、農藥、除草劑、殺蟲劑等所使用之化學品用容器(瓶子);清涼飲料、酒、醬油、調味汁、醬料、食用油、調味醬等所使用之食品用容器(瓶子);果醬、人造黃油、花生醬、番茄醬、蛋黃醬等西點塗料所使用之捏擠容器;冰淇淋、酸乳酪等食品用容器(杯);濕巾等容器(廣口瓶)。 《附標籤之樹脂成形品之製造方法》本發明之附標籤之樹脂成形品之製造方法之特徵在於具有如下步驟:積層樹脂膜形成步驟,其形成具有基層(A)與設置於該基層(A)之上之多孔質層(B)之積層樹脂膜;印刷步驟,其於該積層樹脂膜之多孔質層(B)之與基層(A)相反側之表面印刷墨水組合物形成墨水圖案而獲得標籤;及成形步驟,其將該形成有墨水圖案之標籤以基層(A)側朝向模具之內壁側、多孔質層(B)側朝向模具之空腔側而與熔融樹脂相接之方式插入至模具內,藉由模內成形法而獲得附標籤之樹脂成形品。於本發明之製造方法中,於所使用之墨水組合物為有色之情形時,該墨水組合物與標籤之多孔質層(B)側表面之色差ΔE0 較佳為3以上。另一方面,於所使用之墨水組合物為無色之情形時,該無色之墨水組合物較佳為進而透明,該第1墨水圖案形成區域與樹脂成形品之表面之色差ΔEP0 較佳為未達3。色差ΔE0 、ΔEP0 可依據上述<多孔質分離層之斷裂面上之色差ΔE>所記載之ΔE之算出方法而求得。於該情形時,於算出ΔE之式中,設為L x 表示第1墨水圖案形成區域之L 值,L y 表示標籤之多孔質層(B)側表面或樹脂成形品之表面之L 值,a x 表示第1墨水圖案形成區域之a 值,a y 表示標籤之多孔質層(B)側表面或樹脂成形品之表面之a 值,b x 表示第1墨水圖案形成區域之b 值,b y 表示標籤之多孔質層(B)側表面或樹脂成形品之表面之b 值,算出色差ΔE0 、ΔEP0 。以下,針對本發明之附標籤之樹脂成形品之製造方法之各步驟詳細地進行說明。 [1]積層樹脂膜之形成步驟 於該步驟中,形成具有基層(A)與多孔質層(B)之積層樹脂膜。 積層樹脂膜可藉由將如下步驟組合而形成:將由包含基層(A)之材料之樹脂組合物形成之層與由包含多孔質層(B)之材料之樹脂組合物形成之層進行積層的積層步驟,與將各層進行延伸之延伸步驟。關於基層(A)及多孔質層(B)之材料之具體例及較佳範圍,可參照上述<標籤之基本構成>一欄之記載。 延伸步驟可針對由各樹脂組合物形成之層分別進行,亦可將各樹脂組合物積層後進行,較佳為將各樹脂組合物積層後沿至少1軸方向進行延伸。本發明之多孔質層(B)強度較低,層厚較薄,因此多孔質層(B)單層時延伸成形極為困難。藉由將基層(A)與多孔質層(B)積層後進行延伸,多孔質層(B)之延伸變容易。因此,基層(A)亦可作為用以將多孔質層(B)進行延伸之擔載體。 作為具體順序,可列舉如下方法:將包含基層(A)之材料之樹脂組合物之層沿縱向進行延伸而獲得縱向單軸延伸膜,此後,於其上積層包含多孔質層(B)之材料之樹脂組合物之層,並將該積層體沿橫向進行延伸而形成積層樹脂膜。 (樹脂組合物之積層) 作為樹脂組合物之積層方法,可使用公知之各種方法,作為具體例,有如下方式等:使用複數之擠出機及給料器台、多歧管、多層模嘴之多層模嘴方式,與使用複數之擠出機與模嘴之擠出層壓方式。又,亦可將多層模嘴方式與擠出層壓方式組合而使用。 (延伸)延伸時,可使用公知之各種方法。關於延伸之溫度,可於基層(A)中主要使用之熱塑性樹脂(例如,占基層(A)中之熱塑性樹脂過半量(50質量%以上)之熱塑性樹脂)之玻璃轉移點溫度以上、其結晶部之熔點以下之溫度範圍之中、適合熱塑性樹脂之延伸之公知之溫度範圍內進行。具體而言,於基層(A)之熱塑性樹脂為丙烯均聚物(熔點155~167℃)之情形時通常為100~166℃,於為高密度聚乙烯(熔點121~136℃)之情形時通常為70~135℃,於與各自熔點相比低1~70℃之溫度下進行延伸。此處,尤其成為基層(A)之樹脂組合物之層較佳為於與上述溫度範圍相比高2~5℃之溫度下進行縱向延伸。藉此,可獲得強度較高之基層(A)。又,成為多孔質層(B)之樹脂組合物之層較佳為於與上述溫度範圍相比低3~10℃之溫度下進行橫向延伸。使成為多孔質層(B)之樹脂組合物之層進行橫向延伸時,較佳之溫度範圍因多孔質層(B)所使用之材料而異,於多孔質層(B)之熱塑性樹脂包含丙烯均聚物之情形時,較佳為145~160℃。如此,藉由在與上述溫度範圍相比相對低之溫度範圍進行橫向延伸,而自多孔質層(B)之厚度方向之剖面觀察之空隙相對變多。結果,可獲得多孔質層中液體等之吸收容量較大、墨水組合物之填充率較高之標籤。上述具有標籤之附標籤之樹脂成形品中,藉由剝離基層(A)而多孔質層(B)發生分離時,於樹脂成形品側之第1多孔質分離層(B1 )及基層(A)側之第2多孔質分離層(B2 )之各斷裂面,可使墨水圖案形成區域與墨水圖案未形成區域之色差ΔE增大,而可使第1墨水圖案(P1 )或第2墨水圖案(P2 )之視認變得容易。作為延伸之具體方法,可列舉:利用輥群之周速差之輥間延伸、利用拉幅烘箱之夾具延伸等。該等延伸方法可組合而實施。輥間延伸具有藉由變更輥群之周速差而可容易地調整延伸倍率之優點。拉幅機延伸因可獲得寬度較大之延伸膜,而具有製造品之良率提高之優點,因加熱延伸時片材表面並不接觸機器類,而亦具有不易發生片材與機器類貼附等故障之優點。延伸倍率並無特別限定,考慮標籤所使用之熱塑性樹脂之特性而決定。於延伸軸數為單軸之情形時,延伸倍率通常為2~11倍,較佳為3~10倍。例如,於熱塑性樹脂使用聚烯烴系樹脂之情形時,輥間延伸時之延伸倍率較佳為4~7倍,於利用拉幅烘箱之夾具延伸時延伸倍率較佳為4~11倍。於延伸軸數為二軸之情形時,作為面積倍率,通常為2~80倍,較佳為3~60倍,更佳為4~50倍。若面積倍率為2倍以上,則容易對膜賦予所需之空隙率。另一方面,若面積倍率為80倍以下,則有不易發生積層樹脂膜形成步驟中延伸時之片材斷片或粗大開孔等故障之優點。 作為尤佳之積層樹脂膜之形成步驟,可列舉如下方法:將包含基層(A)之材料之樹脂組合物自模嘴擠出為片狀,利用輥間之周速差進行縱向延伸而獲得縱向單軸延伸膜後,於該縱向單軸延伸膜之上積層包含多孔質層(B)之材料之樹脂組合物,繼而使用拉幅機進行橫向延伸。此時,較佳為如上所述般,為了提高基層(A)之強度,於與通常之熱塑性樹脂膜中之縱向延伸溫度相比高2~5℃之溫度下進行縱向延伸,且為了增加多孔質層(B)之墨水吸收容量,於與通常之熱塑性樹脂膜中之橫向延伸溫度相比低3~10℃之溫度下進行橫向延伸。 (熱處理)較佳為對延伸後之積層樹脂膜進行熱處理。熱處理之溫度較佳為選擇與上述延伸溫度相比高10~30℃之溫度。熱處理之溫度之較佳範圍因多孔質層(B)所使用之熱塑性樹脂而異,於基層(A)之熱塑性樹脂為丙烯均聚物之情形時,較佳為選擇165~180℃。藉由對積層樹脂膜進行熱處理,而延伸方向之熱收縮率降低,製造品保管時之捲縮或模內成形時因收縮導致之表面波紋等減少。此外,藉由以與對通常之延伸膜進行之熱處理之溫度相比高之溫度進行熱處理,而多孔質層(B)表面之一部分熔融而空隙減少。藉此,於以下進行之印刷步驟中,於對多孔質層(B)之表面印刷墨水組合物時,該墨水組合物以藉由毛細管現象而被擠出至空隙內部之方式滲透,可使墨水組合物滲透至多孔質層(B)之更深位置。又,藉由進行熱處理,亦可獲得如下效果:可使多孔質層(B)表面之凹凸均勻而使多孔質層(B)表面更平滑化。此處,於後續步驟[4]中進行之模內成形時,若多孔質層(B)表面凸部較多,則其表面與樹脂成形品成為點接觸狀態而接觸面積減小,有於所獲得之附標籤之樹脂成形品中標籤(多孔質層(B))與樹脂成形品之界面中接著強度減小之傾向。相對於此,若藉由熱處理而多孔質層(B)表面平滑化,則藉由模內成形可獲得標籤高強度地接著於樹脂成形品的附標籤之樹脂成形品。於如此之附標籤之樹脂成形品中,於將標籤之基層(A)自樹脂成形品剝離時,不易發生多孔質層(B)與樹脂成形品之界面上之剝離,因此利用多孔質層(B)之凝集破壞進行之剝離優先進行,而容易將多孔質層(B)分離為第1多孔質分離層(B1 )與第2多孔質分離層(B2 )。藉此,於第1多孔質分離層(B1 )之斷裂面、以及第2多孔質分離層(B2 )之斷裂面,墨水圖案形成區域與墨水圖案未形成區域之色差(對比)清楚顯現,第1墨水圖案(P1 )以及第2墨水圖案(P2 )之視認變得容易。熱處理之方法通常以熱輥及熱烘箱進行,亦可將該等組合。該等處理中,將經延伸之膜於保持拉緊下之狀態實施因可獲得更高之處理效果而較佳。 又,熱處理後,較佳為對積層樹脂膜表面實施電暈放電處理或電漿處理等氧化處理。藉由實施氧化處理而表面之濕潤性進而提高,有印刷時之墨水受理性提高之優點。 [2]印刷步驟該步驟中,於步驟[1]中所形成之積層樹脂膜之多孔質層(B)側之表面印刷墨水組合物而形成墨水圖案。形成於多孔質層(B)表面之墨水圖案之墨水組合物自多孔質層(B)表面之開口滲透至空隙內部,被吸收至多孔質層(B)內。針對墨水組合物所使用之成分之較佳範圍及具體例,可參照上述[墨水組合物]一欄之記載。本發明中使用之墨水組合物之黏度較佳為10 mPa・s以上,更佳為15 mPa・s以上,進而較佳為20 mPa・s以上。又,墨水組合物之黏度較佳為1500 mPa・s以下,更佳為1200 mPa・s以下,進而較佳為1000 mPa・s以下。若墨水組合物之黏度為10 mPa・s以上,則可抑制墨水組合物過度流動,而有滲透至多孔質層(B)中之墨水組合物形成之墨水圖案不易模糊之傾向。又,有墨水組合物之處理性較佳之傾向。另一方面,若墨水組合物之黏度為1500 mPa・s以下,則印刷於多孔質層(B)表面之墨水組合物容易滲透至多孔質層(B)內部之空隙內,可使墨水組合物被吸收至多孔質層(B)之較深位置。結果,於藉由自所獲得之附標籤之樹脂成形品剝離基層(A)而顯現之第1多孔質分離層(B1 )及第2多孔質分離層(B2 )之各斷裂面,於墨水圖案形成區域與墨水圖案未形成區域之間容易獲得較高之色差ΔE。本說明書中所謂之「墨水組合物之黏度」係指利用JIS Z8803:2011之單一圓筒型旋轉黏度計(B型黏度計)所測得之墨水組合物之黏度。墨水組合物之黏度可藉由墨水組合物中之組合物之種類、固形分之濃度、溶劑之種類、溶劑之濃度、或退黏劑(reducer)等添加劑之使用等而進行調整或控制。此處,專利文獻1之實施例中使用之墨水組合物黏度過高,因此,即便將該墨水組合物對標籤之多孔質層表面進行大量供給,墨水組合物亦停留於空隙之開口附近(表面附近)而難以滲透至多孔質層之內部。即便將以此方式獲得之標籤貼附於樹脂成形品,剝離標籤之基層而使多孔質層分離為基層側之多孔質分離層與成形品側之多孔質分離層,墨水組合物亦不到達該分離位置(斷裂面),墨水圖案被多孔質分離層覆蓋。因此,即便觀察成形品側之多孔質分離層之斷裂面,墨水圖案形成區域與墨水圖案未形成區域之色差亦不十分,墨水圖案之視認並不容易。為了使成形品側之第1多孔質分離層(B1 )及標籤側之第2多孔質分離層(B2 )之各斷裂面容易出現由墨水組合物形成之墨水圖案,較佳為如上所述般實施如下操作等:(1)將多孔質層(B)之橫向延伸溫度設定為較低而使多孔質層(B)之空隙率增大,使墨水吸收容量增大,(2)將多孔質層(B)熱處理時之溫度設定為相對較高,而使多孔質層(B)表面附近之空隙率減少,及(3)使墨水圖案形成時所使用之墨水組合物之黏度相對較低(設為特定範圍)。 作為對多孔質層(B)表面印刷墨水組合物之方法,可列舉:膠版印刷、凹版印刷、凸版印刷、軟版印刷、網版印刷、噴墨印刷、電子照片印刷等各種印刷方式,其中,就適合黏度較低之墨水組合物之印刷而言,較佳為使用軟版印刷法。 印刷於多孔質層(B)表面之墨水圖案並無特別限定。作為具體例,可列舉:圖樣或文字、快速回應碼等條碼、製造商、銷售公司名、圖標、商品名等表示設計或資訊之圖案。 又,於該步驟中,可於對多孔質層(B)表面印刷墨水組合物之同時亦對基層(A)之與多孔質層(B)相反側之表面印刷墨水組合物。本發明中使用之標籤可藉由基層(A)之多層化而附加記錄性、印刷適性、耐摩擦性、2次加工適性等各種功能。 [3]熱密封層形成步驟 該步驟係視需要而進行之步驟,係對步驟[2]中形成有墨水圖案之多孔質層(B)之表面形成熱密封層。 熱密封層可藉由如下方式而形成:藉由在形成有墨水圖案之多孔質層(B)之表面塗敷或印刷包含熱密封層之材料之樹脂組合物等而進行積層。關於熱密封層之材料之較佳範圍與具體例,可參照上述[熱密封層]一欄之記載。 關於印刷方法之具體例,可參照步驟[2]中作為印刷墨水組合物之方法所例示之各種印刷方式。又,作為塗敷方法,可列舉:輥塗、凹版塗佈、淋幕式塗佈、噴塗、模嘴塗佈等塗裝方式。 [4]成形步驟 該步驟中,將形成有墨水圖案之標籤以基層(A)側成為模具之內壁面側、多孔質層(B)側可與熔融樹脂相接之方式插入至模具內,藉由模內成形法而獲得附標籤之樹脂成形品。 本發明中使用之標籤作為將熔融樹脂型坯利用壓空而壓接於模具內壁之吹塑成形用或使用預型體之延伸吹塑成形用亦較佳,作為以射出裝置對模具內注入熔融樹脂並進行冷卻固化之射出成形用之模內成形用標籤亦可較佳地供於成形步驟。 進而亦可作為差壓成形用之標籤,其以標籤之印刷面接觸差壓成形模具之下雌模具之內面之方式設置,此後,藉由抽吸而固定於模具內壁,繼而將成形品成形材料用之樹脂片材之熔融物引導至下雌模具之上方,利用差壓使標籤一體地熔合於成形品外壁。差壓成形可採用真空成形、壓空成形之任一者,但通常將兩者併用,且較佳為利用塞助之差壓成形。 本發明之附標籤之樹脂成形品由於標籤被固定於模具內後標籤與樹脂成形品成形為一體,故而可獲得標籤無變形、成形品與標籤具有適當之接著強度、亦無鼓包(起泡)、經標籤加飾之外觀良好的成形品。 [實施例] 以下,列舉實施例及試驗例對本發明進而具體地進行說明。以下之實施例中採用之材料、使用量、比率、處理內容、處理順序等只要不偏離本發明之主旨均可適當變更。因此,本發明之範圍不應受以下所示之具體例的限定性解釋。 [試驗例] 將本實施例中進行之試驗示於以下。未記載溫度之操作係於20℃下進行。 (墨水組合物之黏度) 各墨水組合物之黏度係將各墨水組合物以恆溫室(溫度20℃、相對濕度65%)保管12小時後,使用單一圓筒型黏度計(東機產業(股份)製造、機器名:TV-25),以JIS Z8803:2011「液體之黏度―測定方法」中記載之單一圓筒型旋轉黏度計之測定方法,以轉速6 rpm進行測定。 (多孔質層(B)之孔隙率) 以擠出機將各延伸膜之製造例中使用之多孔質層(B)用調配物進行熔融混練而獲得組合物[B],將組合物[B]冷卻後,依據JIS K7112:1999測定真密度ρ0 。 另一方面,於延伸膜之製造例中獲得之各延伸膜之端面插入截切刀製作抓持量,緩緩地用手剝離多孔質層(B)。對該多孔質層(B)依據JIS K7222:2005測定密度ρ。根據藉由上述所求得之真密度ρ0 與密度ρ利用下述式(1)算出多孔質層(B)之孔隙率。 [數3]
Figure TW201805175AD00003
(吸油性) 針對延伸膜之製造例中獲得之各延伸膜,使用吸油計(熊谷理機工業(股份)製造)測定吸油性。吸油性之測定除下述操作以外,依據JAPAN TAPPI 67-2000中所規定之吸油度試驗方法而進行:對多孔質層(B)之表面自滴定管滴加礦油20 μm,使用5片試驗片,測定恢復至輥通過試驗片之上時檢流計指針之值所需之時間代替測定降低至自僅試驗片之情形時之讀數增加5個刻度時所需之時間。 (附標籤之樹脂成形品之剝離強度) 自各實施例及各比較例中所製造之附標籤之樹脂成形品之標籤貼附部分裁剪寬度15 mm、長度100 mm之試樣,將各試樣於恆溫室(溫度20℃、相對濕度65%)保管12小時。此後,於標籤之多孔質層之端面以截切刀加工切口而製作剝離部。切口係以多孔質層沿厚度方向分為2部分之方式自多孔質層之端面(沿厚度方向展開之面)向垂直於端面之方向加工,切口深度設為1 cm。 使用拉伸試驗機(島津製作所(股份)製造、機器名:AUTOGRAPH),以拉伸速度300 mm/分將剝離部與樹脂成形品以180°之角度向相互遠離之方向進行拉伸,藉此使基層(A)與樹脂成形品剝離,並利用荷重元測定剝離穩定時之應力。該應力之測定係針對各積層樹脂膜之橫向與縱向(多孔質層(B)之延伸方向及與其正交之方向)分別進行,算出該等之平均值作為剝離強度。 (斷裂面之墨水圖案之視認性) 對各實施例及各比較例中所製造之附標籤之樹脂成形品的標籤之多孔質層之端面以截切刀加工切口而製作剝離部。切口係以多孔質層沿厚度方向分為2部分之方式自多孔質層之端面向垂直於端面之方向加工,切口深度設為1 cm。 以手指夾住剝離部,以拉伸速度100 mm/分左右之速度將剝離部與樹脂成形品以180°之角度向相互遠離之方向進行拉伸,藉此以手將標籤自樹脂成形品剝離。 標籤剝離後,對在殘留於樹脂成形品之第1多孔質分離層(B1 )之斷裂面出現的第1墨水圖案(P1 )之印刷視認性、及於被剝離之標籤之第2多孔質分離層(B2 )上的第1墨水圖案(P1 )之對應區域(P')或被剝離之標籤之第2多孔質分離層(B2 )之斷裂面出現的第2墨水圖案(P2 )之印刷視認性分別如下進行判定。 再者,各實施例之附標籤之樹脂成形品於標籤剝離時在多孔質層(B)內整齊地斷裂,分為樹脂成形品側及標籤側2部分且薄皮狀地殘留積層於兩者,並未於標籤側之斷裂面露出基層(A),又,亦未於樹脂成形品側之斷裂面露出樹脂成形品。 ◎:印刷部分較深而可視認 ○:印刷部分稍深而可視認 △:印刷部分較淡而可視認 ×:印刷部分之視認較困難或無法視認 又,記錄第1墨水圖案(P1 )與第2墨水圖案(P2 )之關係。 (黏著帶剝離試驗) 於上述墨水圖案之視認性評價時,針對自實施例7~19及比較例4、5之附標籤之樹脂成形品剝離之各標籤,用手將黏著帶(Nichiban(股份)製造之透明膠帶、商品名:Sellotape、品種名:CT-18)貼附於其第2多孔質分離層(B2 )之斷裂面出現之第2墨水圖案(P2 )上,以拉伸速度100 mm/分左右將黏著帶與標籤以180°之角度沿相互遠離之方向進行拉伸,藉此以手進行剝離。針對剝離後之黏著帶之黏著面及第2多孔質分離層(B2 )之剝離面,將墨水圖案之視認性如下分別進行判定。 ○:墨水圖案可視認 △:墨水圖案不清晰,但可視認 ×:墨水圖案無法視認 (多孔質層斷裂面之墨水圖案形成區域與該面之墨水圖案未形成區域之色差ΔE測定及系統色判定) 針對附標籤之樹脂成形品之剝離強度試驗時殘留於樹脂成形品之第1多孔質分離層(B1 )上的墨水圖案(P1 )形成區域及未形成區域、以及經剝離之標籤之第2多孔質分離層(B2 )上的對應區域(P')或墨水圖案(P2 )形成區域及未形成區域各者,使用色彩色差計(Videojet X-Rite(股份)製造、機器名:X-rite530)測定明度L 值、及色座標a 、b 值,並以如下式求出色差ΔE。 [數4]
Figure TW201805175AD00004
於上述式中,L x 表示墨水圖案形成區域或對應區域之L 值,L y 表示墨水圖案未形成區域之L 值,a x 表示墨水圖案形成區域或對應區域之a 值,a y 表示墨水圖案未形成區域之a 值,b x 表示墨水圖案形成區域或對應區域之b 值,b y 表示墨水圖案未形成區域之b 值。 此處,將色差ΔE為3以下之情形判定為「同系統色」,將ΔE超過3之情形時判定為「不同系統色」。 (多孔質層斷裂面之墨水圖案(P1 )形成區域與樹脂成形品之色差ΔE測定及系統色判定) 於上述色差ΔE測定時,使用色彩色差計(Videojet X-Rite(股份)製造、機器名:X-rite530)測定樹脂成形品之標籤未貼附部分(吹氣成形品之主體部)之明度L 值、及色座標a 、b 值。繼而,針對實施例1~6及比較例1~2之附標籤之樹脂成形品,以下式求出多孔質層斷裂面之墨水圖案(P1 )形成區域與樹脂成形品之色差ΔE。 [數5]
Figure TW201805175AD00005
於上述式中,L x 表示墨水圖案(P1 )形成區域之L 值,L y 表示樹脂成形品之L 值,a x 表示墨水圖案(P1 )形成區域之a 值,a y 表示樹脂成形品之a 值,b x 表示墨水圖案(P1 )形成區域之b 值,b y 表示樹脂成形品之b 值。 此處,將色差ΔE為3以下之情形判定為「同系統色」,將ΔE超過3之情形時判定為「不同系統色」。 (多孔質層斷裂面之墨水圖案(P1 )未形成區域與樹脂成形品之色差ΔE測定及系統色判定) 於上述色差ΔE測定時,針對實施例1~6及比較例1~3之附標籤之樹脂成形品,以下式求出多孔質層斷裂面之墨水圖案(P1 )未形成區域與樹脂成形品之色差ΔE。 [數6]
Figure TW201805175AD00006
於上述式中,L x 表示墨水圖案(P1 )未形成區域之L 值,L y 表示樹脂成形品之L 值,a x 表示墨水圖案(P1 )未形成區域之a 值,a y 表示樹脂成形品之a 值,b x 表示墨水圖案(P1 )未形成區域之b 值,b y 表示樹脂成形品之b 值。 此處,將色差ΔE為3以下之情形判定為「同系統色」,將ΔE超過3之情形判定為「不同系統色」。 [電子顯微鏡觀察] 將各製造例中製作之積層樹脂膜以環氧樹脂包埋並使之固化後,使用切片機製作相對於膜之厚度方向平行(即垂直於面方向)之切割面。對該切割面蒸鍍金屬而噴敷金屬後,使用掃描型電子顯微鏡(日立製作所(股份)製造、機器名:S-2400)放大至3000倍而進行照片拍攝,將該圖像利用圖像解析裝置(Nireco(股份)製造、機器名:Luzex IID)進行二值化處理及圖像處理而獲得剖面圖像。使用該剖面圖像求各層之孔隙率。 (基層(A)及多孔質層(B)之剖面空隙率) 對剖面圖像上之基層(A)及多孔質層(B)各者算出由熱塑性樹脂組合物劃分之空隙區域之面積除以觀測區域整體之面積所得之值作為剖面空隙率。剖面圖像中觀察之空隙內之無機填充劑當作空隙處理。 [延伸膜之製造] 將各製造例中使用之材料彙總記載於表1,將各製造例中使用之調配物之組合彙總記載於表2。表1中之「MFR」係指熔體流動速率。 [表1] [表2] (積層樹脂膜之製造例1) 將包含作為結晶性聚丙烯樹脂之PP-1 34質量%及PP-2 20質量%、作為無機微細粉末之F-3 45質量%、以及作為分散劑之D-3 1質量%的基層(A)用調配物d於設定為250℃之擠出機中進行熔融混練,經由模嘴擠出成形為片狀,利用冷卻裝置冷卻至70℃而獲得單層無延伸片材。將該無延伸片材再加熱至145℃後,利用大量輥間之周速差沿縱向延伸至5倍,而獲得縱向單軸延伸膜。 另外,將包含作為結晶性聚丙烯樹脂之PP-1 16質量%、作為與結晶性聚丙烯樹脂不相溶之熱塑性樹脂之PE-1 19.5質量%、作為無機微細粉末之F-1 62質量%、以及作為分散劑之D-1 0.5質量%及D-2 2質量%的多孔質層(B)用調配物a於設定為250℃之擠出機中進行熔融混練,經由模嘴擠出為片狀,積層於上述之縱向單軸延伸膜之一面,獲得具有d/a之2層結構之積層物。 繼而,將上述積層物使用烘箱再加熱至153℃後,使用拉幅延伸機沿橫向延伸9倍,繼而以170℃進行熱處理,而獲得經2軸延伸/1軸延伸之製造例1之2層延伸膜(積層樹脂膜)。製造例1之2層延伸膜之總厚度為105 μm,其中多孔質層(B)之厚度為6 μm,多孔質層(B)之孔隙率為60%。 (積層樹脂膜之製造例2) 把將積層物沿橫向延伸時之再加熱溫度設為158℃,把沿橫向延伸後進行之熱處理之溫度設為160℃,除此以外,以與製造例1相同之方式獲得2層延伸膜(積層樹脂膜)。製造例2之2層延伸膜之總厚度為95 μm,其中多孔質層(B)之厚度為5 μm,多孔質層(B)孔隙率為52%。 (積層樹脂膜之製造例3) 以與製造例1中之縱向單軸延伸膜之形成步驟相同之步驟,獲得由調配物d構成之單層縱向單軸延伸膜。 另外,將包含作為結晶性聚丙烯樹脂之PP-1 50質量%及PP-2 30質量%、以及作為無機微細粉末之F-3 20質量%的基層(A)用調配物e於設定為250℃之擠出機中進行熔融混練,經由模嘴擠出為片狀,積層於上述縱向單軸延伸膜之一面。 又,另外,將包含作為結晶性聚丙烯樹脂之PP-3 13質量%、作為與結晶性聚丙烯樹脂不相溶之熱塑性樹脂之PE-2 25質量%、作為無機微細粉末之F-4 60質量%、及作為分散劑之D-3 2質量%的多孔質層(B)用調配物b於設定為250℃之擠出機中進行熔融混練,經由模嘴擠出為片狀,積層於上述縱向單軸延伸膜之與積層有調配物e之面相反側之面,而獲得具有e/d/b之3層結構之積層物。 繼而,將上述積層物使用烘箱再加熱至153℃,此後使用拉幅延伸機沿橫向延伸9倍,繼而以170℃進行熱處理,而獲得經1軸延伸/2軸延伸/1軸延伸之製造例3之3層延伸膜(積層樹脂膜)。製造例3之3層延伸膜之總厚度為100 μm,其中多孔質層(B)之厚度為10 μm,多孔質層(B)之孔隙率為60%。 (積層樹脂膜之製造例4) 把將積層物沿橫向進行延伸時之再加熱溫度設為158℃,把沿橫向進行延伸後進行之熱處理之溫度設為160℃,除此以外,以與製造例3相同之方式獲得3層延伸膜(積層樹脂膜)。製造例4之3層延伸膜之總厚度為91 μm,其中多孔質層(B)之厚度為9 μm,多孔質層(B)之孔隙率為50%。延伸膜之製造例4中採用與日本專利特開2012-215799號公報之實施例3相同之橫向延伸溫度。 (積層樹脂膜之製造例5) 以與製造例1中之縱向單軸延伸膜之形成步驟相同之步驟,獲得由調配物d形成之單層之縱向單軸延伸膜。 另外,將包含作為結晶性聚丙烯樹脂之PP-3 42質量%、作為與結晶性聚丙烯樹脂不相溶之熱塑性樹脂之PO-1 3.5質量%、作為無機微細粉末之F-2 52.5質量%及F-5 0.5質量%、以及作為分散劑之D-1 0.5質量%及D-2 1質量%的多孔質層(B)用調配物c於設定為250℃之擠出機中進行熔融混練,經由模嘴擠出為片狀,積層於上述縱向單軸延伸膜之一面,獲得具有d/c之2層結構之積層物。 繼而,將上述積層物使用烘箱再加熱至158℃後,使用拉幅延伸機沿橫向延伸9倍,繼而以160℃進行熱處理,而獲得經2軸延伸/1軸延伸之製造例5之2層延伸膜(積層樹脂膜)。製造例5之2層延伸膜之總厚度為95 μm,其中多孔質層(B)之厚度為4 μm,多孔質層(B)之孔隙率為30%。 將上述各製造例中使用之調配物及條件、製作之積層樹脂膜之多孔質層(B)之孔隙率及吸油性彙總示於表3。 [表3] [附標籤之樹脂成形品之製造] (實施例1)於製造例1中獲得之積層樹脂膜之基層(A)側之面,使用膠版印刷機(三菱重工業(股份)製造、機器名:Daiya II型)及UV膠版墨水I-4(T&K TOKA(股份)製造、商品名:BESTCURE 161墨、墨水黏度:25000 mPa・s)印刷包含圖標之圖樣及50%網點之設計。繼而,於該膜之多孔質層(B)側之面使用軟版印刷機(Mark Andy公司製造、機器名:2200)及無色UV柔版墨水I-1(T&K TOKA(股份)製造、商品名:UV Flexo Medium 500、墨水黏度:600 mPa・s),印刷線數600根/英吋、網點率70%之圖案。繼而,於多孔質層(B)側之整個面使用凹版印刷機(岡崎機械工業(股份)製造)及熱密封劑H-1(Toyomorton(股份)製造、商品名:Adcoat 1790),印刷線數200根/英吋之100%網點,沖裁成橫109 mm、縱171 mm之尺寸而製成模內成形用標籤。繼而,使用吹氣成形機(Placo(股份)製造、機器名:V-50型)、自動標籤供給裝置(Pentel(股份)製造)及可獲得內容量1,000 ml之瓶子容器之吹氣成形用組合模,藉由模內成形法而獲得附標籤之樹脂成形品。具體而言,將上述中獲得之模內成形用標籤利用真空以基層(A)側與模具相接之方式固定於吹塑成形用組合模之一方後,將高密度聚乙烯(日本聚乙烯(股份)製造、商品名:Novatec HD HB330、熔點:133℃)著色為藍色而獲得藍色樹脂,將該藍色樹脂於200℃下熔融擠出而製成型坯,導入至組合模間後鎖閉組合模,繼而對型坯內供給4.2 kg/cm2 之壓空,使型坯膨脹而密接於模具而製成容器形狀並且與模內成形用標籤接著,繼而將該組合模以10℃之冷卻水進行冷卻後,約10秒後開模將貼附有標籤之中空容器取出,將其作為附標籤之樹脂成形品。(實施例2、3)將軟版印刷於多孔質層(B)側之圖案之線數與網點率如表4所示般進行變更,除此以外,以與實施例1同樣之方式製造附標籤之樹脂成形品。(比較例2)將軟版印刷於多孔質層(B)側之圖案之線數與網點率如表4所示般進行變更,同時使用自然色之高密度聚乙烯(日本聚乙烯(股份)製造、商品名:Novatec HD HB330、熔點:133℃)代替著色為藍色之高密度聚乙烯而成形中空容器,除此以外,以與實施例1同樣之方式製造附標籤之樹脂成形品。(實施例4~6、比較例1)使用表4中所示之製造例中獲得之積層樹脂膜代替製造例1中獲得之積層樹脂膜,除此以外,以與實施例1同樣之方式製造附標籤之樹脂成形品。(比較例3)於以與日本專利特開2012-215799號公報中記載之實施例3同樣之條件製造的積層樹脂膜之基層(A)側之面,使用膠版印刷機(三菱重工業(股份)製造、機器名:Daiya II型)及UV膠版墨水I-4(T&K TOKA(股份)製造、商品名:BESTCURE-161墨、墨水黏度:25000 mPa・s),印刷包含圖標之圖樣及50%網點之設計。繼而,於該膜之多孔質層(B)側之面,使用與上述相同之膠版印刷機及與上述不同之UV膠版墨水I-2(T&K TOKA(股份)製造、UV161 Medium S、墨水黏度:24000 mPa・s),印刷與實施例1相同之圖案。繼而,與實施例1同樣地,於多孔質層(B)側之整個面印刷熱密封劑H-1,沖裁成橫109 mm、縱171 mm之尺寸而獲得模內成形用標籤,使用該標籤,與實施例1同樣地使用著色為藍色之高密度聚乙烯進行模內成形,而製造附標籤之樹脂成形品。 (實施例7) 於製造例1中獲得之積層樹脂膜之基層(A)側之面,使用膠版印刷機(三菱重工業(股份)製造、機器名:Daiya II型)及UV膠版墨水I-4(T&K TOKA(股份)製造、商品名:BESTCURE-161墨、墨水黏度:25000 mPa・s),印刷包含圖標之圖樣及50%網點之設計。 繼而,於該膜之多孔質層(B)側之面,使用軟版印刷機(Mark Andy公司製造、機器名:2200)及UV柔版墨水I-3(T&K TOKA(股份)製造、商品名:UV Flexo 500墨、墨水黏度:600 mPa・s),印刷線數300根/英吋、網點率90%之圖案。 繼而,於多孔質層(B)側之整個面,使用凹版印刷機(岡崎機械工業(股份)製造)及熱密封劑H-1(Toyomorton(股份)製造、商品名:Adcoat 1790),印刷線數200根/英吋之100%網點,沖裁成橫109 mm、縱171 mm之尺寸,而製成模內成形用標籤。 繼而,使用吹氣成形機(Placo(股份)製造、型號:V-50型)、自動標籤供給裝置(Pentel(股份)製造)及可獲得內容量1,000 ml之瓶子容器之吹氣成形用組合模,藉由模內成形而獲得附標籤之樹脂成形品。具體而言,將上述中獲得之模內成形用標籤沖裁成橫109 mm、縱171 mm之尺寸,將所得之標籤利用真空以基層(A)側與模具相接之方式固定於吹塑成形用組合模之一方後,將高密度聚乙烯(日本聚乙烯(股份)製造、商品名:Novatec HD HB330、熔點:133℃、自然色)於200℃下熔融擠出而製成型坯,導入至組合模間後鎖閉組合模,繼而對型坯內供給4.2 kg/cm2 之壓空,使型坯膨脹而密接於模具而製成容器形狀並且與模內成形用標籤接著,繼而將該組合模以10℃之冷卻水進行冷卻後,約10秒後開模,將貼附有標籤之中空容器取出,將其作為附標籤之樹脂成形品。 (實施例8~10) 將軟版印刷於多孔質層(B)側之圖案之網點率如表4所示般進行變更,除此以外,以與實施例7同樣之方式製造附標籤之樹脂成形品。 (實施例11) 於多孔質層(B)側之面,使用邁耶棒#16以手塗方式塗敷熱密封劑代替凹版印刷熱密封劑H-1,同時使用著色為藍色之高密度聚乙烯代替自然色之高密度聚乙烯而成形樹脂成形品,除此以外,以與實施例7同樣之方式製造附標籤之樹脂成形品。 (實施例12、13) 將軟版印刷於多孔質層(B)側之圖案之網點率如表4所示般進行變更,同時使用著色為藍色之高密度聚乙烯代替自然色之高密度聚乙烯而成形樹脂成形品,除此以外,以與實施例7同樣之方式製造附標籤之樹脂成形品。 (實施例14~16、比較例4) 使用表4中所示之製造例中獲得之積層樹脂膜代替製造例1中獲得之積層樹脂膜,除此以外,以與實施例7同樣之方式製造附標籤之樹脂成形品。 (比較例5) 於以與日本專利特開2012-215799號公報中記載之實施例3相同之條件製造的積層樹脂膜之基層(A)側之面,使用膠版印刷機(三菱重工業(股份)製造、機器名:Daiya II型)及UV膠版墨水I-4(T&K TOKA(股份)製造、商品名:BESTCURE-161墨、墨水黏度:25000 mPa・s),印刷包含圖標之圖樣及50%網點之設計。 繼而,於該膜之多孔質層(B)側之面,使用與基層(A)側所使用者相同之膠版印刷機及UV膠版墨水I-4(T&K TOKA(股份)製造、商品名:BESTCURE-161墨、墨水黏度:25000 mPa・s),印刷網點50%之圖案。 繼而,與實施例1同樣地,於多孔質層(B)側之整個面印刷熱密封劑H-1,沖裁成橫109 mm、縱171 mm之尺寸而獲得模內成形用標籤,使用該標籤並使用自然色之高密度聚乙烯進行模內成形,而製造附標籤之樹脂成形品。 (實施例17) 於製造例2中獲得之積層樹脂膜之基層(A)側之面,使用膠版印刷機(三菱重工業(股份)製造、機器名:Daiya II型)及UV膠版墨水I-4(T&K TOKA(股份)製造、商品名:BESTCURE-161墨、墨水黏度:25000 mPa・s),印刷包含圖標之圖樣及50%網點之設計。 繼而,於該膜之多孔質層(B)側之面,使用噴墨印刷機(Seiko Epson(股份)製造、機器名:PX-V630)及UV噴墨墨水I-5(CTC Japan股份有限公司製造、商品名:KY-G2-BLACK、墨水黏度:20 mPa・s),以印字模式:超精細印刷網點率:100%。 繼而,於多孔質層(B)側之整個面使用凹版印刷機(岡崎機械工業(股份)製造)及熱密封劑H-1(Toyomorton(股份)製造、商品名:Adcoat 1790),印刷線數200根/英吋之100%網點,沖裁成橫109 mm、縱171 mm之尺寸,而製成模內成形用標籤。 繼而,使用吹氣成形機(Placo(股份)製造、型號:V-50型)、自動標籤供給裝置(Pentel(股份)製造)及可獲得內容量1,000 ml之瓶子容器之吹氣成形用組合模,藉由模內成形,而獲得附標籤之樹脂成形品。具體而言,將上述中獲得之模內成形用標籤沖裁成橫109 mm、縱171 mm之尺寸,將所得之標籤利用真空以基層(A)側與模具相接之方式固定於吹塑成形用組合模之一方,此後,將高密度聚乙烯(日本聚乙烯(股份)製造、商品名:Novatec HD HB330、熔點:133℃、自然色)於200℃下熔融擠出而製成型坯,導入至組合模間後鎖閉組合模,繼而對型坯內供給4.2 kg/cm2 之壓空,使型坯膨脹而密接於模具而製成容器形狀並且與模內成形用標籤接著,繼而將該組合模以10℃之冷卻水進行冷卻後,約10秒後開模,將貼附有標籤之中空容器取出,而將其作為附標籤之樹脂成形品。 (實施例18) 將軟版印刷於多孔質層(B)側之墨水使用UV柔版墨水I-6(T&K TOKA(股份)製造、商品名:UV Flexo CF墨、墨水黏度:1200 mPa・s),除此以外,以與實施例7同樣之方式製造附標籤之樹脂成形品。 (實施例19) 使用製造例1中獲得之積層樹脂膜,對多孔質層(B)側進行噴墨印刷之噴墨印刷機使用Seiko Epson(股份)製造、機器名:PX-V630,噴墨墨水使用水性噴墨墨水I-7(Seiko Epson(股份)製造、商品名:ICBK31青,品紅、黃、墨水黏度:10 mPa・s),以印字模式:超精細印刷50%灰色(R:50%、G:50%、B:50%)、網點率:100%,除此以外,以與實施例17相同之方式製造附標籤之樹脂成形品。 將針對上述各實施例及各比較例中製作之附標籤之樹脂成形品所進行的自樹脂成形品之標籤之剝離強度測定、第1墨水圖案(P1 )及第2墨水圖案(P2 )之視認性之評價、及上述實施例7~19、比較例4、5之黏著帶剝離試驗之評價結果示於表5,且 將上述各實施例及各比較例中製作之附標籤之樹脂成形品中的第1多孔質分離層(B1 )中之墨水圖案(P1 )形成區域與墨水圖案(P1 )未形成區域的色差ΔE、及第2多孔質分離層(B2 )中之對應區域(P')或墨水圖案(P2 )形成區域與對應區域(P')外或墨水圖案(P2 )未形成區域的色差ΔE、及上述實施例1~6、比較例1~3中製作之附標籤之樹脂成形品中之墨水圖案(P1 )形成區域與樹脂成形品的色差ΔEP 、及墨水圖案(P1 )未形成區域與樹脂成形品的色差ΔEB 之評價結果示於表6。 [表4] [表5] [表6] 如表5所示,關於實施例1~19中所製造之附標籤之樹脂成形品,自樹脂成形品將標籤之基層(A)剝離時,多孔質層(B)分離為樹脂成形品側與基層(A)側之兩者,且於樹脂成形品側之第1多孔質分離層(B1 )出現第1墨水圖案(P1 )。 尤其關於使用將多孔質層(B)側以無色低黏度墨水進行印刷之標籤的實施例1~6之各附標籤之樹脂成形品,自樹脂成形品將標籤之基層(A)剝離時,於樹脂成形品側之第1多孔質分離層(B1 )出現第1墨水圖案(P1 )。 此時,如表6所示,墨水圖案(P1 )形成區域(印刷部)與墨水圖案未形成區域(留白部)之色差ΔE均超過3,可判定為不同系統色,該墨水圖案之視認性為實用者。 另一方面,關於實施例1~3及實施例5之各附標籤之樹脂成形品,於伴隨具有基層(A)之標籤而剝離之第2多孔質分離層(B2 )之對應區域(P')未見墨水圖案。 又,關於使用將多孔質層(B)側以有色柔版墨水或有色噴墨墨水進行印刷之標籤的實施例7~19之各附標籤之樹脂成形品,於樹脂成形品側之第1多孔質分離層(B1 )、及伴隨具有基層(A)之標籤而剝離之第2多孔質分離層(B2 )兩者分別出現墨水圖案(P1 )與第2墨水圖案(P2 )。 此時,如表6所示,關於第1多孔質分離層(B1 )上之墨水圖案(P1 )、第2多孔質分離層(B2 )上之第2墨水圖案(P2 ),墨水圖案形成區域(印刷部)與墨水圖案未形成區域(留白部)之色差ΔE均超過3,可判定為不同系統色,該墨水圖案之視認性為實用者。 進而,於實施例7~19之各附標籤之樹脂成形品中,伴隨標籤出現於第2多孔質分離層(B2 )上的第2墨水圖案(P2 )藉由黏著帶剝離試驗,於第2多孔質分離層(B2 )之斷裂面與黏著帶之黏著面之兩者分別可見墨水圖案,因此可確認墨水組合物滲透至多孔質層(B)之較深位置。 另一方面,比較例1、比較例4中所製造之附標籤之樹脂成形品中,於第1多孔質分離層(B1 )及第2多孔質分離層(B2 )任一者之斷裂面中,均未能視認到墨水圖案。認為其原因在於:製造例5之積層樹脂膜之多孔質層(B)之孔隙率較低,吸油性較差,因此即便使用黏度較低之墨水,墨水組合物亦不滲透至多孔質層(B)之內部。又,比較例3、比較例5之附標籤之樹脂成形品中使用的以與日本專利特開2012-215799號公報之實施例3相同之條件製作之積層樹脂膜於多孔質層(B)之吸油性方面較差,提示墨水組合物之滲透性較低。進而,使用於該積層樹脂膜之多孔質層(B)側印刷黏度較高之墨水組合物I-2及日本專利特開2012-215799號公報之實施例中使用之UV膠版墨水(T&K TOKA (股份)製造、商品名:BESTCURE-161、墨水黏度:25000 mPa・s、墨水組合物I-4)之標籤的附標籤之樹脂成形品中,於第1多孔質分離層(B1 )及第2多孔質分離層(B2 )任一者之斷裂面中均未能視認到墨水圖案。推測其原因在於:黏度較高之墨水滯留於多孔質層(B)之表面附近,而幾乎未滲透至層內部。 又,根據相對於實施例1而變更了印刷至多孔質層(B)之墨水圖案之網點比率的實施例2、3、及比較例2之比較、以及相對於實施例7同樣地變更了網點比率之實施例8、9、及實施例10、13之比較得知,墨水圖案之網點比率越低,墨水組合物變得越難滲透至多孔質層(B)之內部,而變得越難視認到第1多孔質分離層(B1 )及第2多孔質分離層(B2 )中之墨水圖案。 又,如表5所示,若將製造例1之積層樹脂膜及製造例3之積層樹脂膜、與較該等於橫向延伸時溫度高5℃且於熱處理時溫度低10℃之製造例2之積層樹脂膜及製造例4之積層樹脂膜進行對比,製造例2、4之積層樹脂膜中之多孔質層(B)之孔隙率小於製造例1、3之積層樹脂膜中之多孔質層(B)之孔隙率。 相應地,如表6所示,若將使用製造例1及3之積層樹脂膜的實施例1及5之附標籤之樹脂成形品、與使用製造例2及4之積層樹脂膜的實施例4及6之附標籤之樹脂成形品進行比較,則實施例4、6中,第1多孔質分離層(B1 )上之墨水圖案(P1 )稍有不清晰。該情況意味著實施例4及6中之多孔質層(B)與實施例1及5中之多孔質層(B)相比,墨水組合物之滲透深度較淺。同樣地,若將使用製造例1及3之積層樹脂膜的實施例7及15之附標籤之樹脂成形品、與使用製造例2及4之積層樹脂膜的實施例14及16之附標籤之樹脂成形品進行比較,則黏著帶剝離試驗後第2多孔質分離層(B2 )上之墨水圖案(P2 )不清晰。該情況意味著實施例14及16中之多孔質層(B)與實施例7及15中之多孔質層(B)相比,墨水組合物之滲透深度較淺。 因此,得知為了使墨水組合物對多孔質層(B)之滲透深度更深,較佳為提高多孔質層(B)之孔隙率,較佳為將形成多孔質層(B)時之橫向延伸溫度設定為較低、將熱處理溫度設定為較高。又,得知較佳為使用黏度較低之墨水。Hereinafter, the labeled resin molded article and its manufacturing method of the present invention will be described in detail. The description of the constituent elements described below is based on a representative embodiment of the present invention, and the present invention is not limited to this embodiment. In addition, in the present invention, "~" refers to a range including the numerical values described before and after each as the minimum value and the maximum value. << Labeled Resin Molded Product >> The labeled resin molded product of the present invention will be described using the labeled resin molded product 3 shown in FIG. 1 as an example. In addition, the configuration of the labeled resin molded product of the present invention is not limited to the configuration shown in FIG. 1, and the form of each part can be appropriately changed. The labeled resin molded product 3 of the present invention includes a resin molded product 1 and a label 2 attached to the resin molded product 1 (see FIGS. 1 and 2). Hereinafter, each part of the labeled resin molded article which comprises this invention is demonstrated. <Basic Structure of Label> As shown in FIG. 3, the label 2 used in the present invention includes a base layer (A), a porous layer (B) provided on the base layer (A), and the inside of the porous layer (B). The plurality of voids 11 and the ink composition 12 existing so as to occupy a part of the voids 11 have a surface on the porous layer (B) side (a surface on the opposite side of the porous layer (B) from the base layer (A)) ) Is attached to the resin molded product 1. Further, in a state where the label 2 is attached to the resin molded product 1, a cut is formed on the end face of the porous layer (B) so that the porous layer (B) becomes two parts in the thickness direction, and the cut is enlarged by the cut. When the base layer (A) is stretched and the label 2 is peeled from the resin molded product 1, as shown in FIGS. 4 and 5, the porous layer (B) is separated into the first remaining in a state of being adhered to the resin molded product 1. 1 porous separation layer (B1 ), And the second porous separation layer (B) peeled off with the base layer (A)2 ), And in the first porous separation layer (B1 The first ink pattern (P) formed by the ink composition 12 appears on the surface opposite to the resin molded product 1 and can be visually confirmed.1 ). In the present invention, "the ink composition existing in a manner of occupying a part of the void" means "existing in a manner of occupying a part of the void" in at least a part of the plurality of voids in the porous layer (B) The ink composition exists so as to occupy a part of the void space. The voids in the ink composition may be all or a part of the plurality of voids in the porous layer (B). When the ink composition exists in the plurality of voids, and the ink composition exists so as to occupy a part of the voids, all of the plurality of voids may be a part. That is, a part of the plurality of voids may be filled with the ink composition. As for the ink composition existing so as to occupy a part of the voids of the porous layer (B), for example, the ink composition supplied to the surface of the porous layer (B) on the side opposite to the base layer (A) The openings of the voids penetrate into the interior and are absorbed by the interior of the porous layer (B). In the present invention, "the first ink pattern (P1 ) "Can be confirmed visually. Here, the "can be confirmed visually" refers to a person who is healthy and has standard vision (for example, no color vision abnormality, corrected vision of 0.7 or more, and vision without extreme astigmatism). Things exist here. In the following description, the surface of the porous layer (B) on the opposite side to the base layer (A) may be simply referred to as a "surface". In addition, the label 2 is peeled from the resin molded product 1 as described above and appears on the exposed surface of the surface, that is, the first porous separation layer (B1 ), The surface opposite to the resin molded product 1, and the second porous separation layer (B2 The surface on the opposite side of the base layer (A) is called "fracture surface". The first porous separation layer (B1 ) On the fracture surface, "the first ink pattern (P1 ) "Area (printing area) is called" pattern forming area "or" first ink pattern forming area ", and" first ink pattern (P1 ") (The blank area) 21 is referred to as" pattern unformed area "or" first ink pattern unformed area ". In the second porous separation layer (B2 ), The ink pattern that can be confirmed by visual inspection ("2nd ink pattern (P2 ) ") May or may not appear. As shown in FIG. 5, in the second porous separation layer (B2 ) On the fracture surface of "2nd ink pattern (P2 "), A" second ink pattern (P2 ) "Area (printing area) is called" pattern forming area "or" second ink pattern forming area ", and" second ink pattern (P2 ”” (Blank area) 22 is referred to as “pattern unformed area” or “second ink pattern unformed area”. As shown in FIG. 4, the second porous separation layer (B2 ) On the fracture surface, "2 Ink Pattern (P2 In the case of ")", the fracture surface and the first ink pattern (P1 The area where) is mirror-image relationship is called "ink pattern corresponding area (P ')", and the other areas (blank area) 22 are called "pattern unformed area" or "second ink pattern unformed area". In the present invention, as a general index indicating that the ink pattern is "confirmable by visual inspection", the measured value between the formation area (printing area) and the unformed area (blank area) of the ink pattern in the observation surface The color difference ΔE is preferably 3 or more. Hereinafter, each layer of the label used in the present invention will be described. [Base layer (A)] The base layer (A) has a strength higher than that of the porous layer (B) described below, and has a strength that does not break inside when the label is peeled off while holding the (A) layer. More specifically, the cohesive force (peel strength or tensile fracture strength) of the base layer (A) itself is preferably 200 gf / 15 mm or more. The material of the base layer (A) is not particularly limited, but preferably contains a thermoplastic resin. The base layer (A) may be transparent, translucent, or opaque. (Thermoplastic resin) The type of the thermoplastic resin used in the base layer (A) is not particularly limited. For example, polyolefin resins such as high-density polyethylene, medium-density polyethylene, low-density polyethylene, propylene-based resins, polymethyl-1-pentene, and ethylene-cyclic olefin copolymers, and ethylene-vinyl acetate can be used. Copolymers, ethylene-acrylic acid copolymers, maleic acid modified polyethylene, maleic acid modified polypropylene and other functional group-containing polyolefin resins, nylon-6, nylon-6,6 and other polyfluorenes Thermoplastic polyester resins such as amine resin, polyethylene terephthalate or its copolymer, polybutylene terephthalate, polybutylene succinate, polylactic acid, aliphatic polyester, polycarbonate Esters, random polystyrene, para-polystyrene, etc. Among these thermoplastic resins, a polyolefin-based resin excellent in processability and a polyolefin-based resin containing a functional group are preferably used. More specific examples of the polyolefin-based resin include olefins such as ethylene, propylene, butene, butadiene, isoprene, chloroprene, methyl-1-pentene, and cyclic olefins. Polymers and copolymers containing two or more of these olefins. A more specific example of the functional group-containing polyolefin-based resin includes a copolymer with a monomer containing a functional group that can be co-superimposed with the olefin. As the functional group-containing monomer, styrenes such as styrene and α-methylstyrene, vinyl acetate, vinyl alcohol, vinyl propionate, vinyl butyrate, and vinyl pivalate are particularly representative. Esters, vinyl hexanoate, vinyl laurate, vinyl stearate, vinyl benzoate, vinyl butyl benzoate, vinyl hexacarboxylate and other vinyl carboxylates, acrylic acid, methacrylic acid, ( Methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, hexyl (meth) acrylate, octyl (meth) acrylate, 2-ethylhexyl (meth) acrylate , Stearyl (meth) acrylate, benzyl (meth) acrylate, cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, dicyclopentyl (meth) acrylate, (meth) (Meth) acrylates such as acrylamide, N-hydroxymethyl (meth) acrylamide ((meth) acrylate refers to acrylate and methacrylate), methyl vinyl ether, ethyl vinyl Ether, propyl vinyl ether, butyl vinyl ether, cyclopentyl vinyl ether, cyclohexyl vinyl ether, benzyl vinyl ether, phenyl vinyl ether and other vinyl ethersAmong these monomers containing a functional group, one or two or more of them can be appropriately selected and polymerized, if necessary. These polyolefin-based resins and functional group-containing polyolefin-based resins can also be graft-modified as necessary and used. For graft modification, a known method can be used. Specific examples include graft modification using an unsaturated carboxylic acid or a derivative thereof. Examples of the unsaturated carboxylic acid include acrylic acid, methacrylic acid, maleic acid, fumaric acid, and itaconic acid. Moreover, as a derivative of the said unsaturated carboxylic acid, you may use an acid anhydride, an ester, amidine, amidine, a metal salt, etc. Specific examples include maleic anhydride, itaconic anhydride, methyl maleic anhydride, methyl acrylate, ethyl acrylate, methyl methacrylate, ethyl methacrylate, butyl acrylate, and methyl formate. Butyl acrylate, glycidyl acrylate, glycidyl methacrylate, maleic acid monoethyl ester, maleic acid diethyl ester, maleic acid monomethyl ester, maleic acid Diacid dimethyl ester, itaconic acid monomethyl ester, itaconic acid diethyl ester, acrylamide, methacrylamide, maleimide monoamine, maleimide diamine , Maleic acid-N-monoethylamidine, maleic acid-N, N-diethylamidine, maleic acid-N-monobutylamidine, maleic acid -N, N-dibutylamidamine, fumarate monoamine, fumarate diamine, fumarate-N-monoethylamidine, fumarate-N , N-diethylamidine, fumarate-N-monobutylamidine, fumarate-N, N-dibutylamidine, maleicimide, N-butylcis Butene difluorene imine, N-phenyl maleic acid, sodium acrylate, methacrylic acid Sodium, potassium acrylate, potassium acrylate, methacrylic. The graft-modified product is preferably graft-modified with a graft monomer of 0.005 to 10% by weight, preferably 0.01 to 5% by weight, relative to the polyolefin-based resin and the polyolefin-based resin containing a functional group. Become. As the thermoplastic resin of the base layer (A), one kind of the thermoplastic resin may be used alone, or two or more kinds may be used in combination. Among these polyolefin-based resins and functional group-containing polyolefin-based resins, propylene-based resins are preferred in terms of chemical resistance and cost. As the propylene resin, it is desirable to use a copolymer as a main component: polypropylene and propylene, which are homopolymers of propylene and are arranged in the same or opposite rows and show various degrees of stereoregularity, as main components, and which are combined with ethylene, Alpha-olefins such as 1-butene, 1-hexene, 1-heptene, and 4-methyl-1-pentene are co-superposed. The copolymer may be a binary system or a ternary system or higher, and may be a random copolymer or a block copolymer. Preferably, a resin having a melting point of 2 to 25% by weight which is lower than that of a propylene homopolymer is used in a propylene resin and used. Examples of such a resin having a relatively low melting point include high-density or low-density polyethylene. In the base layer (A), in addition to the thermoplastic resin, inorganic fine powder, an organic filler, a thermal stabilizer (antioxidant), a light stabilizer, a dispersant, a lubricant, and the like may be added as necessary. When an inorganic fine powder is added, an average particle diameter is usually 0.01 to 15 μm, preferably 0.1 to 5 μm. Specifically, calcium carbonate, calcined clay, silica, diatomaceous earth, clay, talc, titanium oxide, barium sulfate, alumina, zeolite, mica, sericite, bentonite, sepiolite, vermiculite, dolomite can be used. , Wollastonite, glass fiber, etc. When an organic filler is added, it is preferable to select a resin different from the thermoplastic resin as the main component. For example, when the thermoplastic resin film is a polyolefin resin film, the organic filler is polyethylene terephthalate, polybutylene terephthalate, polycarbonate, nylon-6, nylon-6 6, Polymers such as cyclic polyolefin, polystyrene, polymethacrylate, etc., can have a higher melting point (for example, 170 to 300 ° C) or glass transition temperature (for example, 170 to 280 ° C) than polyolefin resins And incompatible. The organic filler is preferably used as an organic fine powder. The average dispersed particle diameter of the organic filler is preferably 0.01 μm or more, more preferably 0.1 μm or more, and still more preferably 0.5 μm or more in terms of ease of mixing with the thermoplastic resin or pore formability. The average dispersed particle diameter of the organic filler is preferably 30 μm or less, more preferably 15 μm or less, and even more preferably 5 μm or less. Regarding the total addition amount of the inorganic fine powder and the organic filler, the entire base layer (A) is 100% by weight, usually 70% by weight or less, preferably 60% by weight or less, and more preferably 50% by weight or less. When adding an inorganic fine powder and an organic filler, the lower limit of the addition amount is usually 0.1 weight% or more, Preferably it is 3 weight% or more, More preferably, it is 10 weight% or more. When a heat stabilizer is added, the entire base layer (A) is 100% by weight, and it is usually added within a range of 0.001 to 1% by weight. Specifically, a stabilizer such as a hindered phenol-based, phosphorus-based, or amine-based stabilizer can be used. When a light stabilizer is used, it is usually used within a range of 0.001 to 1% by weight. Specifically, a hindered amine-based, benzotriazole-based, benzophenone-based light stabilizer, or the like can be used. A dispersant or a lubricant can be used, for example, in order to disperse an inorganic fine powder. The amount of addition is usually set within a range of 0.01 to 4% by weight. Specifically, a silane coupling agent, a higher fatty acid such as oleic acid or stearic acid, a metal soap, polyacrylic acid, polymethacrylic acid, or a salt thereof can be used. The layer thickness of the base layer (A) is usually in the range of 30 to 500 μm, preferably 70 to 300 μm. If it is 30 μm or more, it has sufficient rigidity when it is used as a label for in-mold molding and attached to a resin molded product. Therefore, there is a tendency that it does not easily cause adhesion wrinkles and is easily attached to a molded product. It is not easy to break. If it is 500 μm or less, the rigidity of the label for in-mold forming will not be too high, and the label tends to be easily held in the mold. (Multilayering) The base layer (A) may have a single-layer structure or a multilayer structure of two or more layers. By multi-layering the base layer (A), various functions such as recordability, printability, abrasion resistance, and secondary processability can be added. When the base layer (A) is formed into a multilayer structure, the total content of the inorganic fine powder and the organic filler of the layer (A1) that is in contact with the porous layer (B) described below is preferably the same as that of the porous layer ( B) Compared with 5 weight% or less, Preferably it is 10 weight% or more. The total content of the inorganic fine powder and the organic filler in the (A1) layer is lower than the porous layer (B) by more than 5% by weight, and the porosity of the porous layer (B) and the (A1) layer is different. When the label is peeled from the resin molded product, the damage can easily be expanded only to the porous layer (B). Specifically, the (A1) layer preferably contains 35 to 100% by weight of the thermoplastic resin, preferably 40 to 100% by weight, 0 to 65% by weight of at least one of the inorganic fine powder and the organic filler, and preferably 0 to 60%. weight%. Regarding the number of extension axes of the multilayer structure, for example, in the case of a two-layer structure, as the surface layer / (A1) layer, non-extension / 1 axis, non-extension / 2 axis, 1 axis / 1 axis, 1 axis / 2 axis, 2 axis / 1 axis, 2 axis / 2 axis. [Porous layer (B)] The porous layer (B) in the present invention is a layer having a large number of fine voids opening toward the surface of the porous layer (B), and an ink composition is present inside the voids. The ink composition existing in the void, for example, the ink composition supplied to the surface of the porous layer (B) on the side opposite to the base layer (A), penetrates from the opening of the void facing the surface of the porous layer (B) to Inside, and is absorbed into the porous layer (B). Here, for example, as shown in FIG. 2, when the ink pattern (P) formed by the ink composition 12 is formed on the surface of the porous layer (B) of the label 2 before the attachment, the ink composition 12 The pattern is retained and absorbed into the porous layer (B). In this case, the reverse pattern of the ink pattern (P) can be visually confirmed as the first ink pattern (P) on the resin molded product 3 after the label is peeled by the following mechanism.1 ). When the ink composition 12 penetrates into a relatively deep position of the porous layer (B), the second ink pattern (P) corresponding to the ink pattern (P) can be confirmed on the peeled label.2 ). According to the porous layer (B), when a label is attached to a resin molded product as a label for in-mold molding, the molten resin enters the porous layer (B) due to resin pressure during the molding of the resin molded product. The opening on the surface can be used to attach a label to a resin molded product by this holding effect. Therefore, regardless of the material of the resin molded product, a label can be attached to the resin molded product. The porous layer (B) is more brittle and weaker than the base layer (A). When the base layer (A) is stretched and the label is peeled from the resin molded product, the porous layer (B ) Is easily aggregated and broken, and is separated into a resin molded product side portion (the first porous separation layer (B1 )), And the base layer side portion (the second porous separation layer (B)2 )). Therefore, the base layer (A) can be easily peeled from the resin molded product with a label. In addition, the porous layer (B) in the present invention has a large number of communicating voids (communication holes) inside. Therefore, when the label is attached to a resin molded product, even if air remains between the label and the resin molded product, The air is also extruded by the resin through the communication hole and discharged to the outside. Therefore, it does not remain between the two and bulge on the label. Therefore, in the porous layer (B) of the present invention, the first porous separation layer (B) that remains in a state of being adhered to the resin molded product due to the existence of the ink composition inside the void, particularly1 The first ink pattern (P1 ), And the first ink pattern (P1 ). Therefore, as shown in FIG. 2, when the ink composition is supplied to the surface of the porous layer (B) according to the ink pattern (P) showing specific information, as shown in FIGS. 4 and 5, it is separated from the first porous material. Layer (B1 The first ink pattern (P) appears on the fracture surface of the ink pattern (P) as a reversed pattern.1 ), And can learn information based on the pattern. With this, according to the learned information, specifying a resin molded product with a peeled label to prevent reuse or counterfeiting of the resin molded product can provide more functions. When the ink composition is also present in the voids in the relatively deep positions of the porous layer (B), as shown in FIG. 5, the second porous separation layer is peeled off along with the base layer (A). (B2 ) Appears on the fracture surface with the first ink pattern (P1 ) Is the second ink pattern (P2 ), And the second ink pattern (P2 ). In this case, from the second ink pattern (P2 ) Knowing the information, specifying the resin molded product with a peeled label to prevent reuse or forgery of the resin molded product, or using the peeled label as a coupon for secondary use, etc., can provide more functions. The material of the porous layer (B) is not particularly limited, and it is preferable to use a stretched film comprising a blend of a crystalline polypropylene resin and a thermoplastic resin incompatible with the crystalline polypropylene resin, and The fine powder resin film is obtained by extending at least in one axis direction. The peeling of the label of the labeled resin molded article of the present invention is performed by the destruction (aggregation failure) of the porous layer (B). Here, if at least two mutually incompatible resins are used as the resin material, and the resin blend is stretched while maintaining the phase separation to obtain a porous layer (B), the porous layer ( B) When breaking, not only peeling occurs at the interface of the voids, but also peeling occurs at the interface between the resins, and the porous layer (B) can be peeled off in a uniform plane shape. In addition, the porous layer (B) includes inorganic fine powder, preferably inorganic fine powder having a surface subjected to hydrophilization treatment, so that good printability can be obtained. (Mixing ratio) As the porous layer (B), a resin film containing a blend obtained by mixing a crystalline polypropylene resin and a thermoplastic resin incompatible with the crystalline polypropylene resin, and a fine powder is used. In the case of a stretched film obtained by stretching at least in one axis direction, the content of the blend of the crystalline polypropylene resin and the thermoplastic resin incompatible with the crystalline polypropylene resin in the porous layer (B) is less than When the entire porous layer (B) is 100% by weight, it is preferably 30 to 60% by weight, and more preferably 35 to 50% by weight. The content of the fine powder in the porous layer (B) is preferably 40 to 70% by weight, and more preferably 50 to 65% by weight. When the content of the fine powder in the porous layer (B) is 40% by weight or more, sufficient peelability is easily obtained. Moreover, if it is 70 weight% or less, it will become easy to obtain a molding stability. The blending ratio of the thermoplastic resin that is incompatible with the crystalline polypropylene resin is preferably 105 to 300 parts by weight, and more preferably 120 to 280 parts by weight relative to 100 parts by weight of the crystalline polypropylene resin. And more preferably 140 to 270 parts by weight. (Crystalline polypropylene resin) It is preferable to use a crystalline polypropylene resin which is the above-mentioned propylene-based resin and whose degree of crystallization is 65% or more. The crystallization degree of the crystalline polypropylene is more preferably 66% or more, and particularly preferably 67 to 80%. When the degree of crystallization is 65% or more, the compatibility between the amorphous portion of the crystalline polypropylene resin and the thermoplastic resin is difficult to achieve, and it is easy to obtain the desired interface peeling effect, and the stress required for peeling (peel strength) can be appropriately reduced. ). If the degree of crystallization is 80% or less, it is easy to purchase. In this specification, the degree of crystallization in a crystalline polypropylene resin can be calculated as follows: After performing an annealing treatment for 90 minutes in an oven set at 105 ° C, the density gradient is used at a temperature of 23 ° C. The density of the crystalline polypropylene resin was obtained by the tube method or the water displacement method (both of which can be mutually corrected by a conversion formula), and calculated from the density using the following formula (1). [Number 1]
Figure TW201805175AD00001
(In the above formula (1), ρS is the density of the crystalline polypropylene resin, and ρC is the density of the crystal portion of the polypropylene resin obtained in theory (0.938 g / cm3 ), ΡA is the density of the amorphous portion of the polypropylene resin (0.852 g / cm3 )) Therefore, in order to achieve the above-mentioned degree of crystallization, the density of the crystalline polypropylene resin used in the porous layer (B) is preferably 0.906 g / cm3 Above, more preferably 0.907 g / cm3 Above, particularly preferably 0.908 g / cm3 the above. (The thermoplastic resin which is incompatible with the crystalline polypropylene resin) The thermoplastic resin which is incompatible with the crystalline polypropylene resin is exemplified by polyethylene resin, styrene resin, cyclic polyolefin resin, and ethylene-cyclic olefin. Co-registration resin, propylene-α-olefin co-registration resin, nylon-6, nylon-6,6, nylon-6,10, nylon-6,12 and other polyamide resins, polyethylene terephthalate or Its copolymers, polyethylene naphthalate, polybutylene terephthalate, polybutylene succinate, polylactic acid, thermoplastic polyester resins such as aliphatic polyesters, polycarbonates, and the like. These may be used by mixing two or more kinds. Among these, a polyethylene resin is preferably used from the viewpoints of chemical resistance and production cost. With the incompatible thermoplastic resin, interfacial peeling occurs between the crystalline polypropylene resin and the thermoplastic resin incompatible with the polypropylene resin during the production of the stretched film, thereby improving the peelability. When the incompatible thermoplastic resin is 105 to 300 parts by weight based on 100 parts by weight of the polypropylene resin, sufficient peelability is easily obtained. In the present specification, the term "immiscible" means that when a blend of a crystalline polypropylene resin and an immiscible thermoplastic resin is observed with an electron microscope, it has the form of a sea-island structure and its structure The size is 0.3 to 10 μm. (Fine powder) As the fine powder, an inorganic fine powder subjected to a hydrophilization treatment, or an inorganic fine powder or an organic fine powder not subjected to a hydrophilization treatment can be used. As the fine powder, only the inorganic fine powder that has been hydrophilized may be used, and only the inorganic fine powder or the organic fine powder that is not subjected to the hydrophilization treatment may be used. The treated inorganic fine powder and / or organic fine powder are used in combination. Examples of the inorganic fine powder include inorganic fine powder such as heavy calcium carbonate, light calcium carbonate, calcined clay, talc, titanium oxide, barium sulfate, zinc oxide, magnesium oxide, diatomaceous earth, and silicon oxide, and inorganic fine powder. Around the core, there are composite inorganic fine powders of aluminum oxide or hydroxide, hollow glass beads, and the like. Among them, heavy calcium carbonate, calcined clay, and diatomaceous earth are preferable because they are inexpensive and can form a large number of pores during extension. As the organic fine powder, a resin different from the thermoplastic resin used in the porous layer (B) is preferably selected. For example, it is preferable to use one which is polyethylene terephthalate, polybutylene terephthalate, polycarbonate, nylon-6, nylon-6,6, cyclic polyolefin, polybenzene Polymers such as ethylene and polymethacrylate have higher melting points or glass transition temperatures than the thermoplastic resins used in the porous layer (B), and are incompatible. For example, those having a higher melting point (for example, 170 to 300 ° C) or a glass transition temperature (for example, 170 to 280 ° C) and being incompatible with polypropylene resin can be used. As the fine powder in the present invention, it is preferable to use at least a surface-hydrophilized surface of the inorganic fine powder exemplified above with a surface treatment agent. If the porous layer (B) is formed using inorganic fine powder whose surface is hydrophilized, the surface of the porous layer (B) can be improved in printability to obtain a beautiful molded product with a label. The porous layer (B) is susceptible to peeling at the interface between the inorganic fine powder and the crystalline polypropylene. Therefore, it is easier to provide a label for in-mold molding that can be separated from the molded product. Examples of the surface treatment agent include a water-soluble anionic surfactant, a water-soluble cationic surfactant, and a water-soluble nonionic surfactant. As specific examples of the surfactant, for example, as the water-soluble anionic surfactant, a sulfonic acid salt having a hydrocarbon group in the range of 4 to 40 carbon atoms, and a phosphoric acid ester having a hydrocarbon group in the range of 4 to 40 carbon atoms can be mentioned. Salts, salts of phosphate monoesters or diesters of higher alcohols in the range of 4 to 40 carbons, alkyl betaines or alkyl sulfobetaines having hydrocarbon groups in the range of 4 to 40 carbons, and the like. Examples of the water-soluble cationic surfactant include diallylamine salts, alkyl diallylamine salts and dialkyl diallylamine salts in the range of 1 to 4 carbon atoms, that is, methyl Diallylamine salt or ethyldiallylamine salt, dimethyldiallylamine salt, methacryloxyethyltrimethylammonium, acryloxyethyltrimethylammonium , Methacryloxyethyl dimethyl ethyl ammonium or propylene ethoxy ethyl dimethyl ethyl ammonium chloride, bromide, methyl sulfate or ethyl sulfate, methacrylic acid N , N-dimethylaminoethyl or N, N-dimethylaminoethyl acrylate is obtained by alkylating epoxy compounds such as epichlorohydrin, dehydrated glycerol, glycidyl trimethylammonium chloride, etc. Grade 4 ammonium salt. Among these, a diallylamine salt, a methyl diallylamine salt, and a dimethyl diallylamine salt are preferable. Examples of the water-soluble nonionic surfactant include acrylamide, methacrylamide, N-vinylformamide, N-vinylacetamide, N-vinylpyrrolidone, and methylformamide. 2-hydroxyethyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxy (meth) acrylate, 3-hydroxypropyl (meth) acrylate, methyl (meth) acrylate, ethyl (meth) acrylate Ester, butyl (meth) acrylate. Among these, acrylamide and methacrylamide are preferred. As a surface treatment method of the inorganic fine powder, for example, a method can be mentioned in which wet treatment is performed in an aqueous medium in the presence of a necessary amount of a surface treatment agent with respect to 100 parts by weight of coarse calcium carbonate particles having a particle diameter of 10 to 50 μm. It is pulverized by a method to obtain a desired particle size. Specifically, water is added to the calcium carbonate such that the weight ratio of the calcium carbonate / aqueous medium (specifically, water) is in the range of 70/30 to 30/70, preferably 60/40 to 40/60, and A surface treating agent of 0.01 to 10 parts by weight, preferably 0.1 to 5 parts by weight relative to 100 parts by weight of calcium carbonate is added thereto, and wet pulverization is performed by a conventional method. Furthermore, an aqueous medium prepared by dissolving a surface treatment agent in an amount in the above range in advance may be prepared, the aqueous medium and calcium carbonate may be mixed, and wet pulverization may be performed by a conventional method. The wet pulverization may be batch or continuous, and grinding using a pulverizing device such as a sand mill, a pulverizer, or a ball mill may be used. Specific examples of the inorganic fine powder that has been surface-treated with the surface-treating agent include, for example, the trade name "AFF" manufactured by Fimatec. In the porous layer (B) of the present invention, in addition to the inorganic fine powder whose surface is hydrophilized, the inorganic fine powder or organic fine powder whose surface has not been hydrophilized is preferably combined and blended. Regarding the blending ratio, when the fine powder to be used is 100% by weight, it is preferable that the inorganic fine powder having a surface subjected to hydrophilization treatment is set to 50 to 99.9% by weight, and that the inorganic fine powder which is not subjected to hydrophilic treatment on the surface is preferably At least one of the powder and the organic fine powder is set to 0.1 to 50% by weight, and more preferably, the inorganic fine powder having a hydrophilized surface is set to 55 to 80% by weight, and the inorganic fine powder without a hydrophilized surface is set. And at least one of the organic fine powder is 20 to 45% by weight. In the porous layer (B), the content of the inorganic fine powder and the organic fine powder that are not hydrophilized on the surface is preferably set to 0.1 to 30% by weight. Here, the "inorganic fine powder without a hydrophilized surface" refers to an inorganic fine powder that has not been intentionally hydrophilized with the above-mentioned surface treatment agent, and refers to an inorganic fine powder obtained through a common process of pulverization, classification, and precipitation Fine powder. For example, if the hydrophilized calcium carbonate fine powder is mixed with a normal heavy calcium carbonate fine powder, the amount of extractables from the porous layer (B) can be adjusted. For example, if the hydrophilized calcium carbonate is fine The combination of powder and organic fine powder can adjust the water absorption. That is, when it is convenient to prepare different kinds of fine powders, when the total amount of the fine powders contained in the porous layer (B) exceeds 70% by weight, the stretch-formability of the water-absorbent and easily peelable film is deteriorated and the molding stability is impaired , So poor. (Dispersant) The porous layer (B) of the present invention preferably contains a dispersant in order to uniformly and finely disperse the inorganic fine powder. Examples of the dispersant for the inorganic fine powder include acid-modified polyolefins and silanol-modified polyolefins. In the present invention, it is particularly preferable to use maleic acid-modified polyolefin and silanol-modified polypropylene. Examples of the acid-modified polyolefin include an acid anhydride group-containing polyolefin obtained by random co-superposition or graft-co-superposition of maleic anhydride, or unsaturated carboxylic acids such as methacrylic acid and acrylic acid. Carboxylic acid-containing polyolefins formed by co-registration or graft co-superposition, epoxy-group-containing polyolefins obtained by subjecting glycidyl methacrylate to random co-superposition or graft-co-superposition. Specific examples include maleic anhydride-modified polypropylene, maleic anhydride-modified polyethylene, acrylic acid-modified polypropylene, ethylene-methacrylic random copolymer, and ethylene-methacrylic acid glycidol. Ester random copolymers, ethylene-glycidyl methacrylate graft copolymers, glycidyl methacrylate modified polypropylene, etc., of which maleic anhydride modified polypropylene and maleic anhydride are particularly preferred Modified polyethylene. Specific examples of maleic anhydride-modified polypropylene and maleic anhydride-modified polyethylene include: Modic AP manufactured by Mitsubishi Chemical Corporation, the product name "P513V" or the product name "M513", or a product The name is "P928", the product name "Umex1001" or the product name "Umex1010" or the product name "Umex2000" manufactured by Sanyo Chemical Industry Co., Ltd., the HPR manufactured by Mitsui DuPont Chemical Co., Ltd. and the product name "VR101". The acid modification rate of the acid-modified polyolefin is preferably 0.01 to 20%, and more preferably 0.05 to 15%. If the acid modification rate is 0.01% or more, it is easy to sufficiently obtain the dispersion effect of the inorganic fine powder in the resin blend. If the acid modification rate is 20% or less, the softening point of the acid-modified polyolefin will not be too low, and therefore it is relatively easy to compound with a thermoplastic resin. When dispersing agent is prepared for the porous layer (B), the content of the dispersing agent is usually 0.5 to 30 parts by weight, and preferably 1 to 20 parts by weight based on 100 parts by weight of the inorganic fine powder. When the content of the dispersant is 0.5 parts by weight or more, the inorganic fine powder is sufficiently dispersed, so it is easy to obtain a desired surface opening ratio, and it is easy to improve a liquid absorption volume. Moreover, if it is 30 parts by weight or less, the stretchability is good, and it is possible to suppress stretched fragments during molding. (Thickness of the porous layer (B)) The layer thickness of the porous layer (B) is usually 0.1 to 20 μm, preferably 3 to 18 μm, more preferably 6 to 15 μm, and even more preferably 7 to 12 μm range. When the thickness of this layer (B) is too thin, the molten material of the resin constituting the molded product enters into the vicinity of the base layer (A) through the porous layer (B), and then the strength increases, but even if the resin is intended to be self-labeled The molded product peeling label also makes it difficult to stabilize the aggregation failure in the porous layer (B), and tends to make peeling difficult. In the case where the thickness of the layer (B) is too thick, there is no problem in the peel strength at the time of peeling, but the peeling position is unstable and the peeling surface cannot be uniform, so the stress required for peeling is unstable, and the resin molded product The unevenness on the surface of both the peeled film and the peeled film tends to be invisible even when printing is performed on the porous layer (B) side. The porous layer (B) is an extended resin film layer extended in at least one axis direction. A layer (B) having surface openings or internal pores formed by extension molding and easily peeled uniformly by the orientation of the resin can be obtained, and a porous layer (B) having a uniform thickness can be obtained. (Opening rate of the surface of the porous layer (B)) The opening rate of the surface of the porous layer (B) is preferably 7 to 60%, more preferably 12 to 50%, and even more preferably 15 to 40%. When the surface opening ratio is 7% or more, sufficient adhesiveness tends to be easily obtained. When the surface opening ratio is 60% or less, the porous layer (B) is less likely to be broken during the following extension molding and a stable laminated resin film can be formed. The "surface aperture ratio" in the present invention refers to the area ratio of the pores in the observation area when the surface on the porous layer (B) side is observed with an electron microscope. Specifically, it can be obtained by cutting any part of a self-labeled resin molded product or a sample of a label, attaching it to an observation sample table, and vapor depositing gold or gold-palladium on the observation surface. An electron microscope (such as a scanning microscope S-2400 manufactured by Hitachi, Ltd.) is used to observe the pores on the surface at an arbitrary magnification (for example, 500 to 3000 times) for easy observation. Furthermore, taking photographs of the observed area, etc., drawing the pores on a tracing film, and image-coated the image using an image analysis device (manufactured by Nireco (Co., Ltd .: model Luzex IID)), and using the area ratio of the pores as Opening rate on the surface of the porous layer (B). The surface aperture ratio of the porous layer (B) can be controlled by stretching the resin composition layer that becomes the porous layer (B), and then performing a heat treatment, and adjusting the heat treatment temperature. (Cross-section porosity in the thickness direction of the porous layer (B)) The cross-section porosity in the thickness direction of the porous layer (B) is preferably 30 to 70%, more preferably 31 to 60%, and still more preferably 33 to 55%, particularly preferably 35-50%. When the cross-section void ratio in the thickness direction is 30% or more, the absorption capacity of the ink composition in the porous layer (B) is increased, and therefore it can be more easily confirmed that the ink composition appears in the porous layer (B) due to the aggregation failure. The first porous separation layer (B1 The first ink pattern (P1 ), And a second porous separation layer (B) appearing on the base layer (A) side2 The second ink pattern (P2 ). In addition, if the cross-sectional porosity in the thickness direction is 30% or more, it tends to be easy to obtain sufficient adhesiveness. On the other hand, if the cross-sectional porosity in the thickness direction is 70% or less, the porous layer (B) is less likely to be broken during the following extension molding and a stable laminated resin film can be formed. The cross-sectional porosity in the thickness direction of the porous layer (B) is preferably higher than the cross-sectional porosity in the thickness direction of the base layer (A). As a result, when the stretched base layer (A) peels off the label from the resin molded product, the porous layer (B) preferentially undergoes aggregation failure than the base layer (A), and the shape of the base layer (A) is easily maintained and the porous layer (B ) Into a first porous separation layer (B1 ) And the second porous separation layer (B2 ). In addition, the first porous separation layer (B) is stabilized by aggregation failure in the thickness direction of the porous layer (B).1 ) And the second porous separation layer (B2 ), The contrast between the ink pattern-formed area and the ink pattern-unformed area clearly appears, making it easy to confirm the first ink pattern (P1 ) And the second ink pattern (P2 ). The "cross-section porosity in the thickness direction" in the present invention can be obtained by taking an electron microscope photograph of the section of the porous layer (B), and determining the area ratio of the pores in the cross-sectional area taken by the photograph ( %). Specifically, after cutting a part of a self-labeled resin molded product or a sample of a label, embedding it with epoxy resin and curing it, a slicer is used to produce a film parallel to the thickness direction of the film (that is, perpendicular to the plane direction). ) Of the cut surface, after metalizing the cut surface by vapor deposition, binarize the photo taken at an arbitrary magnification (for example, 500 to 3000 times) magnified to the above-mentioned electron microscope for easy observation, and use the above image The analysis device performs image processing, and determines the area ratio (%) of the pores occupying the measurement range as the cross-sectional porosity (%) in the thickness direction. The cross-sectional porosity in the thickness direction of the porous layer (B) can be controlled by adjusting the stretching temperature when the resin composition to be the porous layer (B) is laterally stretched. (Arithmetic average roughness of the surface of the porous layer (B)) The arithmetic average roughness Ra of the surface of the porous layer (B) is preferably 0.3 to 1.8 μm, more preferably 0.5 to 1.6 μm, and even more preferably 0.7 to 1.4 μm. . When the arithmetic average roughness is 0.3 μm or more, the effect of fitting the unevenness of the resin into the surface of the porous layer (B) due to the resin pressure at the time of resin molding of the molded product can be obtained, which can contribute to the improvement of adhesion. If the arithmetic average roughness is 1.8 μm or less, the image quality will not be lowered due to missing points caused by unevenness during printing. The "arithmetic average roughness" in the present invention is measured using a surface roughness meter (manufactured by Kosaka Research Institute (KK), trade name: SURFCORDER SE30) based on JIS-B0601. (Oil-absorbing property of porous layer (B)) In this specification, the oil-absorbing property of porous layer (B) refers to certain conditions determined by changing the oil absorption test method specified in JAPAN TAPPI 67-2000. The time required to suck oil. Specifically, the measurement was performed in accordance with the oil absorption test method specified in JAPAN TAPPI 67-2000 except for the following operations: 20 μm of mineral oil was dropped from the burette to the surface of the porous layer (B), and 5 test pieces were used. The time required for the measurement to return to the value of the galvanometer pointer when the roller passes over the test piece instead of the time required for the measurement to decrease from the reading when the test piece alone is increased by 5 marks. It is speculated that the shorter the time, the higher the oil absorption, and the easier the ink composition will penetrate. The oil absorption is preferably 200 seconds or less, more preferably 100 seconds or less, and still more preferably 60 seconds or less. [Ink Composition] The ink composition is present inside the voids of the porous layer (B). Regarding its existence state or function, refer to the item of the porous layer (B). In the present invention, the ink composition may be a colored liquid material containing a color material (colorant) or a colorless liquid material that does not substantially contain a color material. Here, the term "substantially free of color material" in the ink composition means that the color material is not intentionally blended in the ink composition, and specifically means that the content of the color material in the ink composition is 0.1% by mass or less. For descriptions, ranges, and specific examples of the “color material” when the ink composition does not substantially include a color material, reference may be made to descriptions, ranges, and specific examples of the color material when the ink composition includes the color material. The colorless ink composition containing substantially no color material is preferably colorless and transparent. Examples of the ink composition include oil-based offset ink, UV-curable offset ink, gravure ink, water-based flexo ink, UV flexo ink, oil-based screen ink, UV-screen ink, water-based inkjet ink, and oil-based inkjet ink. , UV inkjet inks, etc., are preferably gravure inks, flexographic inks, and inkjet inks because they have a low viscosity and easily penetrate into the voids of the porous layer. When the ink composition contains a color material and is colored, as the color material, dyes or pigments exhibiting black, white, ordinary full-color 4 colors or spot colors, or metal fine powders exhibiting a metallic effect or the like can be used. In addition, the color material may include a person that absorbs ultraviolet or infrared rays, or a person that absorbs ultraviolet or infrared rays and emits visible light. Furthermore, even if the color material of the ink composition is white, the base layer (A) and the porous layer (B) of the resin molded article or label are colored in a color other than white, and the ink pattern formation area and the ink are also colored. A sufficient color difference ΔE is obtained between the non-patterned areas, and the ink pattern can be visually recognized. As the color material, dyes such as basic dyes, acid dyes, direct dyes, fluorescent dyes, disperse dyes, and reactive dyes can be used. For example, inorganic pigments containing metal oxides or sulfides as main components can be widely used. Dissolved dyes called lakes are organic pigments obtained by adding a precipitant to make them insoluble. Specific examples of the inorganic pigment include titanium white (titanium dioxide), zinc white (zinc oxide), calcium carbonate, kaolin, graphite (carbon black), ultramarine blue, iron blue (prussian blue), and yellow (yellow) ocher), chrome yellow, zinc yellow, titanium nickel yellow, bismuth yellow, cadmium yellow, red lead (iron oxide), red lead, cinnabar (mercury sulfide), cadmium red, precipitated barium sulfate , Barium oxide powder and so on. As the organic pigment, in addition to a lake pigment, a polycyclic system, a phthalocyanine system, a soluble azo system, an insoluble azo system, a polyazo system, or a dyeing system may be mentioned. The pigments include full-color 4-color pigments, white pigments, spot-color pigments, extender pigments, and pearlescent pigments (talc particles, kaolin particles, mica particles, and boards that have been surface-treated with inorganic salts such as silicon oxide, titanium oxide, and iron oxide. Silicon oxide, plate-shaped alumina, plate-shaped calcium carbonate, etc.), metal powder (bronze powder, bronze paste, floating aluminum paste, non-floating aluminum paste, etc.) and the like. These can also be used in combination. In addition, the ink composition may contain various additives other than a colorant, and for example, it is preferable to contain a silicone resin as an additive. As a colorless ink composition containing substantially no color material, a liquid material in the same combination as the above-mentioned ink composition can be used except that the color material is substantially not included. In addition, a low viscosity colorless ink (medium), varnish, and transparent Inks, invisible inks, composite inks, and the like can also be used as colorless ink compositions that are substantially free of color materials. Specific examples of the colorless ink composition containing substantially no color material include UV flexo ink (trade name: UV Flexo Medium 500, manufactured by T & K TOKA) or UV offset ink (trade name: UV161 Medium S). , T & K TOKA)). Hereinafter, the mechanism by which a visible ink pattern appears with a colorless ink composition containing substantially no color material will be described. That is, since the porous layer (B) usually has diffused reflection of transmitted light due to a large number of voids in the layer, it has high opacity or whiteness. In a certain region of the porous layer (B), if the inside of the voids in the region is filled with a colorless ink composition containing substantially no color material, the region filled with the ink composition (ink pattern forming region) The opacity decreases, resulting in a difference in opacity between the ink pattern formation area and the surrounding ink pattern non-formation area. As a result, the ink pattern can be visually recognized as a "watermark". At this time, if the base layer (A) of the resin molded product or the label is colored in a color other than white, the colors can be seen in the ink pattern formation area. Therefore, the ink pattern formation area and the ink pattern formation area A sufficient color difference ΔE is obtained therebetween, and the ink pattern can be more clearly recognized. Here, for example, in a case where the color of the resin molded product can be seen through the ink pattern forming region, the smaller the color difference ΔE between the ink pattern forming region and the resin molded product, the better, and it is preferable that the color difference ΔE is less than 3, More preferably, it is less than 2, and even more preferably, it is less than 1. [Heat-Seal Layer] The label used in the present invention may be provided with a heat-seal layer on the surface of the porous layer side if necessary. The so-called heat-sealing layer is the one that reinforces the adhesion between the label and the resin molded product. It is solid at normal temperature and is activated by the heat of the molten resin used to mold the resin molded product in the mold. After cooling, it becomes a solid shape again, and it can exert a strong adhesive force. The thermoplastic resin constituting the heat-sealing layer preferably has a melting point of 60 to 130 ° C. as a peak temperature as measured by DSC. If it does not reach 60 ° C, the slipperiness of the label is deteriorated due to the sticky feeling at normal temperature, and adhesion and the like are liable to occur. Therefore, when inserting the label into the mold, it is easy to cause two failures such as adhesion. Moreover, when it exceeds 130 degreeC and it is large, since the adhesiveness of a label and a molded object is easy to deteriorate, it is unpreferable. Specific examples of the thermoplastic resin include polyolefin resins, and examples include low- or medium-density high-pressure polyethylene, linear linear polyethylene, ethylene, α-olefin copolymers, and propylene-α-olefin photopolymerization. Polymers, ethylene-vinyl acetate copolymers, ethylene-acrylic acid copolymers, ethylene-alkyl acrylate copolymers, ethylene-alkyl methacrylate copolymers (the carbon number of the alkyl group is 1 to 8), ethylene-formaldehyde Polyethylene resins such as metal salts (Zn, Al, Li, K, Na, etc.) based on acrylic acid copolymers having a melting point of 60 to 130 ° C. These resins may be used individually by 1 type, and may mix and use 2 or more types. In the heat-sealing layer, other known additives for resins can be arbitrarily added within a range that does not hinder the performance required of the heat-sealing layer. Examples of such additives include dyes, nucleating agents, plasticizers, mold release agents, antioxidants, anti-blocking agents, flame retardants, ultraviolet absorbers, and dispersants. The thickness of the heat-sealing layer is preferably 0.1 μm or more, and more preferably 0.5 μm or more, from the viewpoint of obtaining sufficient adhesion to the resin molded article. On the other hand, when offset printing is performed in a sheet form, or when the label is not easily curled when the label is inserted into a mold, it is preferably 20 μm or less, and more preferably 10 μm or less. <Resin-molded product> The resin-molded product used in the present invention may be a molded product containing a resin, and in terms of ease of molding, a molded product containing a thermoplastic resin is preferred. Examples of the thermoplastic resin include a polypropylene resin, a polyethylene resin, a polystyrene resin, and a polyethylene terephthalate resin. These may be used alone or in combination. Examples of the form of the resin molded product include containers obtained by blow molding or injection molding. <Peeling> When the labeled resin molded article of the present invention is stretched from the resin molded article when the base layer (A) is stretched, the porous layer (B) is aggregated and broken, and the base layer (A) is accompanied by the porous layer. Part of it is peeled. At this time, the porous layer (B) is separated into the first porous separation layer (B) remaining in a state of being adhered to the resin molded article.1 ), And the second porous separation layer (B) peeled off with the base layer (A)2 ) 2nd floor. Here, in the porous layer (B) in the present invention, the ink composition exists in the internal voids, and as shown in FIGS. 4 and 5, the first porous separation layer (B1 The first ink pattern (P1 ). Then, a first ink pattern (P1 ) And the first ink pattern (P1 ) In the ink pattern non-formation area (blank area) 21, the first ink pattern (P1 ). When the ink composition has sufficient penetration into the porous layer (B), as shown in FIG. 5, the second porous separation layer (B) is peeled off along with the base layer (A).2 The second ink pattern (P2 ). A second ink pattern (P2 ) And the second ink pattern (P2 In the case where the color difference of the ink pattern formation region 22 is not sufficient, the second ink pattern (P2 ). On the other hand, when the penetration of the ink composition into the porous layer (B) is insufficient, a second ink pattern (P2 ) And the second ink pattern (P2 In the case where the color difference in the area where the ink pattern is not formed is insufficient, as shown in FIG. 4, the second ink pattern (P2 ). In this case, it will correspond to the second ink pattern (P2 ), That is, the first ink pattern (P1 ) The areas that are in mirror relationship with each other are called ink pattern corresponding areas (P '). <Peel strength> When peeling the base layer (A) of the label attached to the resin molded product, the peel strength (stress required for peeling) is preferably in a range of 0.3 to 1.6 N / 15 mm, and more preferably 1 to 1.6 N The range of / 15 mm is particularly preferably in the range of 1.2 to 1.6 N / 15 mm. This peel strength shows the strength required when peeling the base layer (A) after sticking to a resin molded article. The peeling is preferably performed uniformly and planarly by the aggregation failure in the porous layer (B). When the peeling strength is 0.3 N / 15 mm or more, there is a tendency that peeling is not likely to occur due to external impact when attached to a resin molded article. When the peel strength is 1.6 N / 15 mm or less, the strength of the adhesive is not exceeded, or the surface strength of the resin molded product is not exceeded when attached to the resin molded product, so it is likely to occur in the porous layer (B). The tendency to agglomerate destruction. The "peel strength" in this specification refers to JIS K 6854-2: 1999 Adhesive-Peel Adhesion Test Method-Part 2: Estimated average value of peel force of 180-degree peel, which refers to a label formed from a resin molded product. (Base material layer (A)) The stress required when peeling. Specifically, in the labeled resin molded product, the label-attached portion of the molded product was cut to a width of 15 mm and a length of 100 mm, and a tensile tester (trade name "AUTOGRAPH" manufactured by Shimadzu Corporation) was used. The base layer (A) was partially peeled off from the molded product at a tensile speed of 300 mm / min and an angle of 180 °, and the stress at the time of stabilization was measured using a load cell. . This peel strength can be achieved by making the degree of crystallization of the crystalline polypropylene used in the porous layer (B) be 65% or more, or by blending a specific amount of incompatible thermoplastic resin or inorganic fines therein. Powder; and extending the porous layer (B) in at least a uniaxial direction. In addition, the peel strength is preferably adjusted by, for example, using a hydrophilized surface as the inorganic fine powder; performing the elongation at a temperature lower than the melting point of the crystalline portion of the crystalline polypropylene; selecting Those having a relatively low viscosity are referred to as the above-mentioned thermoplastic resin; the porosity of the above-mentioned porous layer (B) is set to a specific range, or the like. In addition, the peeling in the porous layer (B) is performed by destroying the porous layer (B) which is not penetrated by the molten material of the resin constituting the molded product, and the peeling strength is applied to the porous layer (B) of the label. The adhesive tape is attached and calculated based on the measured value of the strength required when peeling it off. The actual force of the porous layer (B) in the label can also be measured. The peeling strength of the label body is obtained by attaching an adhesive tape (a transparent tape manufactured by Nichiban Co., Ltd., a trade name "Sellotape", and a product name "CT-18") to the porous layer (B). ), Cut a length of 100 mm, and use a tensile tester (Shimadzu Corporation (trade name "AUTOGRAPH") manufactured by Shimadzu Corporation) to produce a porous layer (B) at a tensile speed of 300 mm / min and an angle of 180 °. The peeling of the base layer (A) and the adhesive tape was measured using a load cell when the peeling was stable and the stress was determined based on the respective average values in the horizontal and vertical directions of the label. The peel strength obtained by this method is preferably 0.4 to 2.0 N / 18 mm, more preferably 0.5 to 1.9 N / 18 mm, and even more preferably 0.6 to 1.8 N / 18 mm. This peeling strength can be adjusted by the said method described using the stress adjustment method required when using a peeling label (base material layer (A)). <Broken state of porous separation layer> It is preferable that the label-formed resin molded product of the present invention is processed with a cutter on the end face of the porous layer of the label to produce a peeling portion, and peeled at a stretching speed of 100 mm / min. When the part and the resin molded product are stretched away from each other, the porous layer (B) breaks neatly without unevenness in the layer, and can be separated into the first porous separation layer (B1 ) And the second porous separation layer (B2 ). For details of the notch or peeling conditions mentioned here, please refer to the column "Visibility of the ink pattern on the fracture surface" below. As a standard for the porous layer (B) to be uniformly fractured without unevenness, each of the surface (the fracture surface on the resin molded product side and the fracture surface on the peeled label side) exposed by peeling the label from the resin molded product can be used Porous separation layer (B1 ), (B2 ), The larger the ratio of the remaining areas, the more the porous layer (B) has no unevenness and breaks neatly. Specifically, the first porous separation layer (B1 ) The fracture surface on the resin molded product side exposed by the peeling of the label preferably occupies 80% or more, the ratio is more preferably 90% or more, still more preferably 95% or more, and even more preferably 99% or more, Especially preferred is 100%. The second porous separation layer (B2 ) The fracture surface on the label side exposed by peeling preferably occupies 80% or more, the ratio is more preferably 90% or more, still more preferably 95% or more, even more preferably 99% or more, and even more preferably 100 %. <Color difference ΔE on the fracture surface of the porous separation layer> In the labeled resin molded product of the present invention, a cut is formed from the end surface of the porous layer (B) so that the porous layer (B) becomes two in the thickness direction. When the base layer (A) is stretched so that the cut is enlarged, and when the label is peeled from the resin molded product, the porous layer (B) is separated into the first porous separation remaining in a state of being adhered to the resin molded product. Layer (B1 ), And the second porous separation layer (B) peeled off with the label having the base layer (A)2 ), And in the first porous separation layer (B1 ), The first ink pattern (P1 ). Here, in the first porous separation layer (B1 ), The first ink pattern (P1 ) And the first ink pattern (P1 The color difference ΔE of the ink pattern unformed area is not particularly limited, but is preferably 3 or more, more preferably 5 or more, and even more preferably 10 or more. When the color difference ΔE is 3 or more, the color difference between the ink pattern formation area and the ink pattern non-formation area is large, and the first ink pattern (P1 ). In this way, when the ink composition (printing) is supplied on the surface of the porous layer (B) in an ink pattern indicating specific information, the first porous separation layer (B1 The first ink pattern (P1 ) To know the information. In this way, information can be obtained on the fracture surface, so that further functions can be imparted to the resin molded product with the label, for example: from the resin molded product with the label peeled, additional information different from the information provided to the label surface can be obtained; Whether it is genuine or not is judged; whether it is used as a coupon such as an application code or the like. When a colorless ink composition containing substantially no color material is used as the ink composition for forming an ink pattern, the first porous separation layer (B1 The first ink pattern (P1 ) The color difference ΔE between the unformed area of the pattern and the surface of the resin molded product (the surface of the unlabeled part of the labeled resin molded product)B And the first porous separation layer (B1 The first ink pattern (P1 Color difference ΔE between the pattern formation area and the surface of the resin molded productP Difference (ΔEB -ΔEP ) Is preferably in the range of 1 to 50, and more preferably in the range of 3 to 30. That is, when it is convenient to use a colorless ink composition, if the difference (ΔEB -ΔEP ) Is 1 or more, the first porous separation layer (B1 ) Can easily recognize the first ink pattern (P1 ). On the other hand, the second porous separation layer (B is peeled off with the label having the base layer (A)2 ) Can form a first porous separation layer (B1 ) Of the first ink pattern (P1 ) Is the second ink pattern (P2 ). It is derived from one formed by dividing the porous layer (B) into two parts in the ink composition layer in the thickness direction. To see the second ink pattern (P2 ) In the second porous separation layer (B2 ), The second ink pattern (P2 ) And the second ink pattern (P2 The color difference ΔE of the pattern-unformed region is preferably 3 or more, more preferably 5 or more, and even more preferably 9 or more. When the color difference ΔE is 3 or more, the color difference between the ink pattern formation area and the ink pattern non-formation area is high, and the second ink pattern (P2 ). When a colorless ink composition containing substantially no color material is used as the ink composition forming the ink pattern, the second porous separation layer (B2 The second ink pattern (P2 ) Is also not visible. The first ink pattern is visually recognizable. On the other hand, the second ink pattern is not recognizable in terms of anti-counterfeiting effect. Even the second ink pattern (P2 ) When the colorless ink composition has sufficiently penetrated the porous layer (B), the second porous separation layer (B2 The second ink pattern (P2 The ink composition is also present in the corresponding area of). Therefore, if a person who absorbs ultraviolet rays or infrared rays and emits visible light is used for the ink composition, the authenticity can be determined more reliably, and the anti-counterfeiting effect can be further improved. In the labeled resin molded article of the present invention, the first ink pattern (P1 ) And 2nd ink pattern (P2 ) Mirror each other. Here, the positive image is set to the first ink pattern (P1 ) Side, or set to the second ink pattern (P2 ) Side (Set mirror image to 2nd ink pattern (P2 ) Side, or set to the first ink pattern (P1 ) Side) can be arbitrarily set according to the intention of the user. In the second ink pattern (P2 In the case of), it is sufficient to print the porous layer (B) with a positive image. Conversely, when the positive image is to be the first ink pattern (P1 In the case of), the porous layer (B) may be printed with an inverse image (mirror image) obtained in advance. The first porous separation layer (B1 ) Surface (fractured surface) or the second porous separation layer (B2 The "color difference ΔE" on the surface (fractured surface) of) refers to each of the ink pattern formation area (or the ink pattern corresponding area) and the ink pattern unformed area, and the brightness L is measured using a color and color difference meter.* Value and color coordinate a* Value and b* The value is calculated from the measured value using the following formula. [Number 2]
Figure TW201805175AD00002
In the above formula, L* x Indicate L of ink pattern formation area* Value, L* y L indicating the area where the ink pattern is not formed* Value, a* x A indicates the ink pattern forming area* Value, a* y A indicates the unformed area of the ink pattern* Value, b* x B indicating the ink pattern forming area* Value, b* y Indicate b of unformed area of ink pattern* value. In addition, the color difference ΔE between the pattern-unformed area and the surface of the resin molded productB Color difference ΔE between the pattern formation area and the surface of the resin molded productP Lightness L can also be measured for each area (surface) using a color difference meter* Value and color coordinates a* Value and b* The value is obtained from the measured value according to the calculation method of ΔE described above. In this case, in the above formula, let L be* x Represents L in a region (surface) where color difference is sought* Value, L* y L in another area (surface) where color difference is sought* Value, a* x A is a region (surface) where the color difference is sought* Value, a* y Representing a for another area (surface) of color difference* Value, b* x B for one of the areas where color difference is sought* Value, b* y B for another area (surface) where color difference is sought* Value to calculate each color difference. <Adhesive Tape Peeling Test> In the present specification, the "adhesive tape peeling test" is a test that appears in the second porous separation layer (B as described above)2 ) 2nd ink pattern (P2 ) Is adhered to the surface of the adhesive tape, the adhesive tape is peeled off at a speed of 180 °, 300 mm / min, and the second porous separation layer (B2 ) And the visibility of the ink pattern on the adhesive surface of the adhesive tape. Preferably, after the peeling test of the adhesive tape, the second ink pattern (P2 ) Is reversed and placed on the second porous separation layer (B2 The second ink pattern (P2 ). In particular, the second porous separation layer (B2 ) On the second ink pattern (P2 The visibility of) is an index of the penetration depth of the ink composition in the porous layer (B), and the second porous separation layer (B2 ) The second ink pattern (P2 The clearer) means that the penetration depth of the ink composition in the porous layer (B) is deeper. <Application of the resin molded product with a label and the resin molded product with a porous layer> The resin molded product with a label of the present invention, and the base layer (A) and the second porous separation layer (B2 ) The first porous separation layer (B1 ) Resin molded products (resin molded products with a porous layer) can be used as oil containers (such as lubricating oil, vacuum pump oil, machine oil, enging oil, motor oil, etc.) Bottle); household lotion, laundry detergent, dishwashing lotion, bathtub lotion, toilet lotion, pipe cleaner, car lotion, softener, bleach, fluorescent whitening agent, cleansing agent, liquid soap, Shampoo, conditioner, oral cleaner, deodorant, bath lotion, ironing paste, disinfectant, fungicide, sterilizing alcohol, polishing wax, pesticide, herbicide, insecticide, etc. Containers (bottles) for chemicals; containers (bottles) for food used in refreshing beverages, wine, soy sauce, sauces, sauces, cooking oils, sauces, etc .; jams, margarine, peanut butter, ketchup, mayonnaise, etc. Squeeze containers used for pastry coatings; containers (cups) for food such as ice cream and yogurt; containers (cups) such as wipes. "Manufacturing method of labeled resin molded article" The manufacturing method of the labeled resin molded article of the present invention is characterized by having the following steps: a laminated resin film forming step of forming a base layer (A) and providing the base layer (A) A multilayer resin film of the porous layer (B) above); a printing step in which an ink pattern is formed by printing an ink composition on the surface of the porous layer (B) of the multilayer resin film opposite to the base layer (A) to obtain an ink pattern A label; and a forming step of inserting the ink pattern-formed label so that the base layer (A) side faces the inner wall side of the mold, and the porous layer (B) side faces the cavity side of the mold, and is inserted into contact with the molten resin Into the mold, a labeled resin molded product is obtained by an in-mold molding method. In the manufacturing method of the present invention, when the ink composition used is colored, the color difference ΔE between the ink composition and the side surface of the porous layer (B) of the label0 It is preferably 3 or more. On the other hand, when the ink composition used is colorless, the colorless ink composition is preferably further transparent, and the color difference ΔE between the first ink pattern formation area and the surface of the resin molded productP0 It is preferably less than 3. Color difference ΔE0 , ΔEP0 It can be calculated | required by the calculation method of ΔE described in said "color difference ΔE on the fracture surface of a porous separation layer". In this case, in the formula for calculating ΔE, let L be* x L indicating the first ink pattern formation area* Value, L* y L on the surface of the porous layer (B) of the label or on the surface of the resin molded product* Value, a* x A indicating the first ink pattern forming area* Value, a* y A indicates the surface of the porous layer (B) of the label or the surface of the resin molded product.* Value, b* x B indicating the first ink pattern formation area* Value, b* y B indicates the surface of the porous layer (B) of the label or the surface of the resin molded product* Value to calculate color difference ΔE0 , ΔEP0 . Hereinafter, each step of the manufacturing method of the labeled resin molded article of this invention is demonstrated in detail. [1] Step of forming a laminated resin film In this step, a laminated resin film having a base layer (A) and a porous layer (B) is formed. The laminated resin film can be formed by combining the steps of laminating a layer formed of a resin composition including a material of the base layer (A) and a layer formed of a resin composition including a material of the porous layer (B). Steps, and an extension step of extending each layer. For specific examples and preferable ranges of the materials of the base layer (A) and the porous layer (B), refer to the description in the above column of "Basic Structure of Label". The extending step may be performed separately for each layer formed of each resin composition, or may be performed after laminating each resin composition, and it is preferable to extend each resin composition in a direction of at least one axis. The porous layer (B) of the present invention has a low strength and a thin layer thickness. Therefore, it is extremely difficult to form the porous layer (B) in a single layer. When the base layer (A) and the porous layer (B) are laminated and stretched, stretching of the porous layer (B) becomes easy. Therefore, the base layer (A) can also be used as a carrier for extending the porous layer (B). As a specific procedure, the following method can be cited: a layer of the resin composition containing the material of the base layer (A) is stretched in the longitudinal direction to obtain a longitudinal uniaxially stretched film, and thereafter, a material containing the porous layer (B) is laminated thereon Layer of the resin composition, and the laminated body is extended in the lateral direction to form a laminated resin film. (Lamination of Resin Composition) As a method for laminating the resin composition, various known methods can be used. As specific examples, there are the following methods: using multiple extruders and feeder tables, multi-manifolds, and multilayer die nozzles. Multi-layer die and extrusion lamination using multiple extruders and die. In addition, a multilayer die method and an extrusion lamination method may be used in combination. (Stretching) In stretching, various known methods can be used. Regarding the elongation temperature, the thermoplastic resin which can be mainly used in the base layer (A) (for example, thermoplastic resin which accounts for more than half (50% by mass or more) of the thermoplastic resin in the base layer (A)) is above the glass transition point temperature and its crystal It is performed within the temperature range below the melting point of the part and within a known temperature range suitable for the extension of the thermoplastic resin. Specifically, when the thermoplastic resin of the base layer (A) is a propylene homopolymer (melting point 155 to 167 ° C), it is usually 100 to 166 ° C, and when it is a high density polyethylene (melting point 121 to 136 ° C). It is usually 70 to 135 ° C, and is stretched at a temperature which is 1 to 70 ° C lower than the respective melting points. Here, it is preferable that the layer of the resin composition serving as the base layer (A) is stretched at a temperature of 2 to 5 ° C higher than the temperature range described above. Thereby, a base layer (A) having high strength can be obtained. Moreover, it is preferable that the layer of the resin composition which becomes a porous layer (B) is horizontally extended at the temperature of 3-10 degreeC lower than the said temperature range. When the layer of the resin composition that becomes the porous layer (B) is laterally extended, the preferred temperature range varies depending on the material used in the porous layer (B). The thermoplastic resin in the porous layer (B) contains propylene, In the case of a polymer, it is preferably 145 to 160 ° C. As described above, by extending laterally in a temperature range that is relatively lower than the above-mentioned temperature range, the number of voids observed from the cross section in the thickness direction of the porous layer (B) is relatively increased. As a result, a label having a large absorption capacity of a liquid or the like in the porous layer and a high filling rate of the ink composition can be obtained. In the above-mentioned labeled molded resin product, when the porous layer (B) is separated by peeling off the base layer (A), the first porous separation layer (B) on the resin molded product side1 ) And the second porous separation layer (B) on the base layer (A) side2 Each of the fractured surfaces can increase the color difference ΔE between the ink pattern formation area and the ink pattern non-formation area, and the1 ) Or 2nd ink pattern (P2 ) Recognition becomes easy. Specific methods for stretching include stretching between rollers using a difference in peripheral speed of the roller group, and stretching using a jig of a tenter oven. These extension methods can be implemented in combination. Stretching between rolls has the advantage that the stretching ratio can be easily adjusted by changing the peripheral speed difference of the roll group. Tenter stretching has the advantage of improving the yield of manufactured products because it can obtain a wide width stretch film. Because the surface of the sheet does not contact the machine during heating and stretching, it also has difficulty in attaching the sheet to the machine. The advantages of such failures. The stretching ratio is not particularly limited, and is determined in consideration of the characteristics of the thermoplastic resin used in the label. When the number of extension axes is a single axis, the extension magnification is usually 2 to 11 times, preferably 3 to 10 times. For example, in the case of using a polyolefin resin as a thermoplastic resin, the stretching ratio when stretching between rolls is preferably 4 to 7 times, and the stretching ratio is preferably 4 to 11 times when stretching using a tenter oven. When the number of extension axes is two, the area magnification is usually 2 to 80 times, preferably 3 to 60 times, and more preferably 4 to 50 times. When the area magnification is 2 times or more, it is easy to impart a desired porosity to the film. On the other hand, if the area magnification is 80 times or less, there is an advantage that failures such as sheet breakage or coarse openings during stretching in the laminated resin film forming step are less likely to occur. As a step for forming a particularly good laminated resin film, the following method can be cited: the resin composition containing the material of the base layer (A) is extruded from a die nozzle into a sheet shape, and longitudinally extended by the peripheral speed difference between the rolls to obtain a longitudinal direction After the uniaxially stretched film, a resin composition containing a material of the porous layer (B) is laminated on the longitudinal uniaxially stretched film, and then stretched laterally using a tenter. In this case, as described above, in order to increase the strength of the base layer (A), it is preferable to perform longitudinal stretching at a temperature which is 2 to 5 ° C higher than the longitudinal stretching temperature in a conventional thermoplastic resin film, and to increase porosity. The ink absorption capacity of the base layer (B) is transversely stretched at a temperature that is 3 to 10 ° C lower than the transversely stretching temperature in a general thermoplastic resin film. (Heat treatment) It is preferable to heat-treat the laminated resin film after stretching. The temperature of the heat treatment is preferably selected at a temperature 10 to 30 ° C higher than the elongation temperature. The preferable range of the heat treatment temperature varies depending on the thermoplastic resin used in the porous layer (B). When the thermoplastic resin of the base layer (A) is a propylene homopolymer, it is preferable to select 165 to 180 ° C. By heat-treating the laminated resin film, the thermal shrinkage in the elongation direction is reduced, and the surface waviness caused by shrinkage during storage of the manufactured product or shrinkage during molding is reduced. In addition, by performing the heat treatment at a temperature higher than the temperature of the heat treatment performed on a general stretched film, a part of the surface of the porous layer (B) is melted and the voids are reduced. Thereby, when the ink composition is printed on the surface of the porous layer (B) in the printing step performed below, the ink composition penetrates into the space through the capillary phenomenon, so that the ink can be penetrated. The composition penetrates deeper into the porous layer (B). In addition, by performing the heat treatment, the effect of making the unevenness on the surface of the porous layer (B) uniform and smoothing the surface of the porous layer (B) can be obtained. Here, in the in-mold molding performed in the subsequent step [4], if there are many convex portions on the surface of the porous layer (B), the surface and the resin-molded product are brought into point contact with each other, and the contact area is reduced, which is useful. In the obtained labeled resin molded article, the adhesion strength at the interface between the label (porous layer (B)) and the resin molded article tends to decrease. On the other hand, if the surface of the porous layer (B) is smoothed by the heat treatment, a resin molded product with a label having a label that adheres to the resin molded product with high strength can be obtained by in-mold molding. In such a labeled resin molded product, when the base layer (A) of the label is peeled from the resin molded product, peeling at the interface between the porous layer (B) and the resin molded product is unlikely to occur. Therefore, the porous layer ( B) The peeling of the agglomeration failure proceeds preferentially, and the porous layer (B) is easily separated into the first porous separation layer (B1 ) And the second porous separation layer (B2 ). Thereby, the first porous separation layer (B1 ) And the second porous separation layer (B2 ), The color difference (contrast) between the ink pattern formation area and the ink pattern non-formation area clearly appears.1 ) And the second ink pattern (P2 ) Recognition becomes easy. The heat treatment method is usually performed by a hot roll and a hot oven, and these methods can also be combined. Of these treatments, it is better to implement the stretched film in a state of being kept under tension because a higher treatment effect can be obtained. After the heat treatment, the surface of the laminated resin film is preferably subjected to an oxidation treatment such as a corona discharge treatment or a plasma treatment. By performing the oxidation treatment, the wettability of the surface is further improved, and there is an advantage that the ink acceptance during printing is improved. [2] Printing step In this step, an ink composition is printed on the surface of the porous layer (B) side of the multilayer resin film formed in step [1] to form an ink pattern. The ink composition of the ink pattern formed on the surface of the porous layer (B) penetrates from the opening on the surface of the porous layer (B) to the inside of the void, and is absorbed into the porous layer (B). For the preferable range and specific examples of the components used in the ink composition, reference can be made to the description in the column of [Ink Composition] above. The viscosity of the ink composition used in the present invention is preferably 10 mPa · s or more, more preferably 15 mPa · s or more, and even more preferably 20 mPa · s or more. The viscosity of the ink composition is preferably 1500 mPa · s or less, more preferably 1200 mPa · s or less, and even more preferably 1000 mPa · s or less. When the viscosity of the ink composition is 10 mPa · s or more, excessive flow of the ink composition can be suppressed, and the ink pattern formed by the ink composition penetrating into the porous layer (B) tends to be difficult to blur. In addition, the ink composition tends to be more rational. On the other hand, if the viscosity of the ink composition is 1500 mPa · s or less, the ink composition printed on the surface of the porous layer (B) easily penetrates into the voids inside the porous layer (B), and the ink composition can be made. It is absorbed to a deeper position of the porous layer (B). As a result, the first porous separation layer (B) developed by peeling off the base layer (A) from the obtained labeled resin molded article1 ) And the second porous separation layer (B2 Each fractured surface of) is easy to obtain a high color difference ΔE between the ink pattern forming region and the ink pattern non-forming region. The "viscosity of the ink composition" referred to in this specification refers to the viscosity of the ink composition measured by a single cylindrical rotary viscometer (B-type viscometer) of JIS Z8803: 2011. The viscosity of the ink composition can be adjusted or controlled by the type of the composition in the ink composition, the concentration of the solid content, the type of the solvent, the concentration of the solvent, or the use of additives such as a reducer. Here, the viscosity of the ink composition used in the example of Patent Document 1 is too high. Therefore, even if a large amount of the ink composition is supplied to the surface of the porous layer of the label, the ink composition remains near the opening of the void (surface Nearby) and difficult to penetrate into the porous layer. Even if the label obtained in this manner is attached to a resin molded product, and the base layer of the label is peeled off to separate the porous layer into the porous separation layer on the base layer side and the porous separation layer on the molded product side, the ink composition does not reach the same. At the separation position (fracture surface), the ink pattern is covered with a porous separation layer. Therefore, even when the fracture surface of the porous separation layer on the side of the molded product is observed, the color difference between the ink pattern formation region and the ink pattern non-formation region is not great, and the ink pattern is not easy to recognize. To make the first porous separation layer (B1 ) And the second porous separation layer (B on the label side)2 The ink pattern formed by the ink composition is easy to appear on each fractured surface. It is preferable to perform the following operations as described above: (1) Set the lateral extension temperature of the porous layer (B) to be low to make the porous The porosity of layer (B) increases, which increases the ink absorption capacity. (2) The temperature of the porous layer (B) during heat treatment is set to be relatively high, so that the porosity near the surface of the porous layer (B) is increased. Reduction, and (3) the viscosity of the ink composition used when forming the ink pattern is relatively low (set to a specific range). Examples of the method for printing the ink composition on the surface of the porous layer (B) include various printing methods such as offset printing, gravure printing, letterpress printing, flexographic printing, screen printing, inkjet printing, and electronic photo printing. In terms of printing suitable for an ink composition having a relatively low viscosity, it is preferable to use a flexographic printing method. The ink pattern printed on the surface of the porous layer (B) is not particularly limited. Specific examples include bar codes such as drawings or text, quick response codes, manufacturers, sales company names, icons, and product names, which are designs or information. In this step, the ink composition can be printed on the surface of the porous layer (B) and the surface of the base layer (A) opposite to the porous layer (B). The label used in the present invention can be added with various functions such as recordability, printability, abrasion resistance, and secondary processability by multi-layering the base layer (A). [3] Step of forming a heat-sealing layer This step is a step performed as necessary, and a heat-sealing layer is formed on the surface of the porous layer (B) having the ink pattern formed in step [2]. The heat-sealing layer can be formed by laminating a porous resin layer (B) on which the ink pattern is formed by coating or printing a resin composition containing a material of the heat-sealing layer. For the preferable range and specific examples of the material of the heat-sealing layer, please refer to the description in the above column of [Heat-sealing layer]. For specific examples of the printing method, various printing methods exemplified as the method for printing the ink composition in step [2] can be referred to. Examples of the coating method include coating methods such as roll coating, gravure coating, curtain coating, spray coating, and die coating. [4] Molding step In this step, the label on which the ink pattern is formed is inserted into the mold such that the base layer (A) side becomes the inner wall surface side of the mold, and the porous layer (B) side is in contact with the molten resin. A labeled resin molded product is obtained by an in-mold molding method. The label used in the present invention is also preferably used for blow molding in which a molten resin parison is pressed against the inner wall of a mold by pressure or extended blow molding using a preform. It is also used as an injection device for injecting into a mold. The label for in-mold molding for injection molding in which the resin is melted and cooled and solidified is also preferably used in the molding step. Furthermore, it can also be used as a label for differential pressure forming, which is arranged so that the printed surface of the label contacts the inner surface of the female mold under the differential pressure forming mold. Thereafter, it is fixed to the inner wall of the mold by suction, and then the molded product is formed. The molten material of the resin sheet for the molding material is guided above the lower female mold, and the label is integrally fused to the outer wall of the molded product using differential pressure. The differential pressure forming may be any one of vacuum forming and pressure forming, but the two are usually used together, and it is preferable to use differential pressure forming using plug assist. Since the labeled resin molded product of the present invention is fixed in a mold, the label and the resin molded product are integrated into one body, so that the label is not deformed, the molded product and the label have appropriate bonding strength, and there is no bulging (blistering). 2. Good shaped products with label decoration. [Examples] Hereinafter, the present invention will be described more specifically with reference to examples and test examples. The materials, usage amounts, ratios, processing contents, processing order, etc. used in the following examples can be appropriately changed as long as they do not deviate from the gist of the present invention. Therefore, the scope of the present invention should not be limitedly interpreted by the specific examples shown below. [Test Example] The test performed in this example is shown below. The operation without recording the temperature was performed at 20 ° C. (Viscosity of Ink Composition) The viscosity of each ink composition is after each ink composition is stored in a constant temperature room (temperature 20 ° C, relative humidity 65%) for 12 hours, and then a single cylindrical viscosity meter (Toki Sangyo Co., Ltd. ) Manufacture, machine name: TV-25), the measurement method is a single-cylinder rotary viscometer described in JIS Z8803: 2011 "Viscosity of Liquids-Measurement Method", and the rotation speed is 6 rpm. (Porosity of Porous Layer (B)) The porous layer (B) used in the production examples of each stretched film was melt-kneaded with an extruder to obtain a composition [B], and the composition [B ] After cooling, measure true density ρ according to JIS K7112: 19990 . On the other hand, a cutter was inserted into the end surface of each stretched film obtained in the manufacturing example of the stretched film to make a grasping amount, and the porous layer (B) was slowly peeled off by hand. The density ρ was measured for this porous layer (B) in accordance with JIS K7222: 2005. According to the true density ρ obtained by the above0 The porosity of the porous layer (B) was calculated using the following formula (1) and the density ρ. [Number 3]
Figure TW201805175AD00003
(Oil absorption property) The oil absorption property of each stretched film obtained in the manufacturing example of the stretched film was measured using an oil absorber (made by Kumagai Riki Kogyo Co., Ltd.). The measurement of oil absorption was performed in accordance with the oil absorption test method specified in JAPAN TAPPI 67-2000 except for the following operations: 20 μm of mineral oil was added dropwise from the burette to the surface of the porous layer (B), and 5 test pieces were used. The time required for the measurement to return to the value of the galvanometer pointer when the roller passes over the test piece instead of the time required for the measurement to decrease from the reading when the test piece alone is increased by 5 marks. (Peel Strength of Labeled Resin Molded Products) Samples with a width of 15 mm and a length of 100 mm were cut from the label-attached portions of the labeled resin-molded products manufactured in the Examples and Comparative Examples, and each sample was Store in a constant temperature room (temperature 20 ° C, relative humidity 65%) for 12 hours. Thereafter, a notch was processed on the end surface of the porous layer of the label with a cutter to prepare a peeling portion. The notch is processed from the end surface (the surface that expands in the thickness direction) of the porous layer to the direction perpendicular to the end face so that the porous layer is divided into two parts in the thickness direction, and the cut depth is set to 1 cm. Using a tensile tester (manufactured by Shimadzu Corporation, machine name: AUTOGRAPH), the peeling part and the resin molded product were stretched away from each other at an angle of 180 ° at a tensile speed of 300 mm / min, thereby The base layer (A) was peeled from the resin molded product, and the stress at the time of stable peeling was measured using a load cell. The measurement of the stress was performed for each of the laminated resin film in the horizontal direction and the vertical direction (the extending direction of the porous layer (B) and the direction orthogonal to the extending direction), and the average value of these was calculated as the peeling strength. (Visibility of Ink Pattern on Fractured Surface) The end face of the porous layer of the label of the labeled resin molded product manufactured in each of the Examples and Comparative Examples was cut with a cutter to produce a peeling portion. The notch is processed in such a manner that the porous layer is divided into two parts in the thickness direction from the end surface of the porous layer to a direction perpendicular to the end face, and the depth of the notch is set to 1 cm. Hold the peeling part with your fingers and stretch the peeling part and the resin molded product at an angle of 180 ° in a direction away from each other at a stretching speed of about 100 mm / min, thereby peeling the label from the resin molded product by hand. . After the label is peeled off, the first porous separation layer (B1 The first ink pattern (P1 ), Printing visibility, and the second porous separation layer (B on the peeled label)2 ) On the first ink pattern (P1 ) Corresponding region (P ') or the second porous separation layer (B of the peeled label)2 The second ink pattern (P2 The print visibility of) was determined as follows. In addition, the labeled resin molded product of each example was neatly fractured in the porous layer (B) when the label was peeled off, and was divided into two parts, the resin molded product side and the label side, and thinly layered and remained on both, The base layer (A) is not exposed on the fracture surface on the label side, and the resin molded product is not exposed on the fracture surface on the resin molded product side. ◎: The printed part is darker and recognizable ○: The printed part is darker and recognizable △: The printed part is lighter and recognizable ×: The printed part is more difficult or unrecognizable Also, the first ink pattern (P1 ) And 2nd ink pattern (P2 ) Relationship. (Adhesive tape peeling test) In the evaluation of the visibility of the ink pattern described above, for each label peeled from the labeled resin molded product of Examples 7 to 19 and Comparative Examples 4 and 5, the adhesive tape (Nichiban (Shares ) Manufactured transparent tape, trade name: Sellotape, product name: CT-18) attached to the second porous separation layer (B2 The second ink pattern (P2 ), The adhesive tape and the label were stretched away from each other at an angle of 180 ° at a stretching speed of about 100 mm / minute, thereby being peeled by hand. For the adhesive surface of the peeled adhesive tape and the second porous separation layer (B2 ), And the visibility of the ink pattern was determined separately as follows. ○: Ink pattern visible △: Ink pattern is not clear, but visible X: Ink pattern cannot be recognized (color difference ΔE measurement and system color determination of the ink pattern formation area of the porous layer fracture surface and the ink pattern non-formation area of the surface ) The first porous separation layer (B1 ) On the ink pattern (P1 ) Formed area and unformed area, and the second porous separation layer (B2 ) On the corresponding area (P ') or ink pattern (P2 ) For each of the formed area and the unformed area, the lightness L was measured using a color difference meter (manufactured by Videojet X-Rite (Stock), machine name: X-rite530).* Value and color coordinate a* , B* Value and calculate the difference ΔE as follows. [Number 4]
Figure TW201805175AD00004
In the above formula, L* x Indicate L of ink pattern forming area or corresponding area* Value, L* y L indicating the area where the ink pattern is not formed* Value, a* x A indicates the ink pattern forming area or corresponding area* Value, a* y A indicates the unformed area of the ink pattern* Value, b* x Indicate b of ink pattern forming area or corresponding area* Value, b* y Indicate b of unformed area of ink pattern* value. Here, a case where the color difference ΔE is 3 or less is judged to be “same system color”, and a case where ΔE exceeds 3 is judged to be “different system color”. (Ink pattern of porous layer fracture surface (P1 ) Measurement of the color difference ΔE of the formed area and the resin molded product and system color judgment) During the above-mentioned color difference ΔE measurement, the color difference meter (manufactured by Videojet X-Rite (Stock), machine name: X-rite530) was used to measure the label of the resin molded product Brightness L of the unattached part (the main part of the blow-molded product)* Value and color coordinate a* , B* value. Next, for the labeled resin molded products of Examples 1 to 6 and Comparative Examples 1 to 2, the ink pattern (P1 ) The color difference ΔE between the formation area and the resin molded product. [Number 5]
Figure TW201805175AD00005
In the above formula, L* x Ink pattern (P1 ) Formation area L* Value, L* y Represents L of resin molded products* Value, a* x Ink pattern (P1 A) forming area* Value, a* y A* Value, b* x Ink pattern (P1 B) forming area* Value, b* y B for resin molded products* value. Here, a case where the color difference ΔE is 3 or less is judged to be “same system color”, and a case where ΔE exceeds 3 is judged to be “different system color”. (Ink pattern of porous layer fracture surface (P1 ) Measurement of color difference ΔE between unformed area and resin molded product and system color judgment) In the above measurement of color difference ΔE, for the labeled resin molded products of Examples 1 to 6 and Comparative Examples 1 to 3, the following formula was used to determine the porosity Ink pattern of layer fracture surface (P1 ) Color difference ΔE between the unformed area and the resin molded product. [Number 6]
Figure TW201805175AD00006
In the above formula, L* x Ink pattern (P1 L) unformed area* Value, L* y Represents L of resin molded products* Value, a* x Ink pattern (P1 A) Unformed area a* Value, a* y A* Value, b* x Ink pattern (P1 B) Unformed area* Value, b* y B for resin molded products* value. Here, a case where the color difference ΔE is 3 or less is judged to be “same system color”, and a case where ΔE exceeds 3 is judged to be “different system colors”. [Electron Microscope Observation] After the laminated resin film produced in each manufacturing example was embedded with an epoxy resin and cured, a slicer was used to make a cut surface parallel to the thickness direction of the film (that is, perpendicular to the plane direction). After the metal was vapor-deposited on the cut surface and metal was spray-coated, a scanning electron microscope (Hitachi Seisakusho, Ltd., machine name: S-2400) was used to enlarge the image to 3000 times, and a photograph was taken. The image was analyzed by image analysis. A device (manufactured by Nireco (stock), machine name: Luzex IID) performs binarization processing and image processing to obtain a cross-sectional image. The porosity of each layer was obtained using this cross-sectional image. (Cross-section porosity of base layer (A) and porous layer (B)) For each of the base layer (A) and porous layer (B) on the cross-sectional image, the area of the void region divided by the thermoplastic resin composition was calculated and divided by The value obtained from the entire area of the observation area is taken as the cross-sectional porosity. The inorganic filler in the void observed in the cross-sectional image is treated as a void. [Production of stretch film] The materials used in each production example are summarized in Table 1, and the combinations of the preparations used in each production example are summarized in Table 2. "MFR" in Table 1 refers to the melt flow rate. [Table 1] [Table 2] (Production example 1 of laminated resin film) 34% by mass of PP-1 as a crystalline polypropylene resin and 20% by mass of PP-2, 45% by mass of F-3 as an inorganic fine powder, and D as a dispersant were included. -3 1% by mass of the base layer (A) is prepared by melt-kneading in an extruder set at 250 ° C, extruded into a sheet shape through a die nozzle, and cooled to 70 ° C by a cooling device to obtain a single layer without Extend the sheet. After the non-stretched sheet was re-heated to 145 ° C, the peripheral speed difference between a large number of rolls was used to extend it to 5 times in the longitudinal direction to obtain a longitudinal uniaxially stretched film. In addition, it contains 16% by mass of PP-1 as a crystalline polypropylene resin, 19.5% by mass of PE-1 as a thermoplastic resin incompatible with the crystalline polypropylene resin, and 62% by mass of F-1 as an inorganic fine powder. And D-1 0.5% by mass and D-2 2% by mass of the porous layer (B) as a dispersant, the formulation a was melt-kneaded in an extruder set at 250 ° C, and extruded through a die nozzle to Sheet-shaped, laminated on one side of the above-mentioned longitudinal uniaxially stretched film to obtain a laminate having a two-layer structure of d / a. Then, the above-mentioned laminate was reheated to 153 ° C in an oven, and then stretched 9 times in the transverse direction using a tenter stretcher, and then heat-treated at 170 ° C to obtain 2 layers of Manufacturing Example 1 which was extended by 2 axes / 1 axis. Stretch film (laminated resin film). The total thickness of the two-layer stretched film of Production Example 1 was 105 μm, wherein the thickness of the porous layer (B) was 6 μm, and the porosity of the porous layer (B) was 60%. (Production Example 2 of Laminated Resin Film) The reheating temperature when the laminate is extended in the lateral direction is set to 158 ° C, and the temperature of the heat treatment performed after the lateral extension is set to 160 ° C. In the same manner, a two-layer stretched film (laminated resin film) was obtained. The total thickness of the two-layer stretched film of Production Example 2 was 95 μm, wherein the thickness of the porous layer (B) was 5 μm, and the porosity of the porous layer (B) was 52%. (Manufacturing Example 3 of Laminated Resin Film) A single-layer longitudinal uniaxially stretched film composed of the formulation d was obtained by the same steps as those for forming the longitudinal uniaxially stretched film in Manufacturing Example 1. In addition, the formulation e for the base layer (A) containing 50% by mass of PP-1 as a crystalline polypropylene resin and 30% by mass of PP-2 and 20% by mass of F-3 as an inorganic fine powder was set to 250. Melt kneaded in an extruder at ℃, extruded into a sheet shape through a die nozzle, and laminated on one side of the above-mentioned longitudinal uniaxially stretched film. In addition, it contains 13% by mass of PP-3 as a crystalline polypropylene resin, 25% by mass of PE-2 as a thermoplastic resin incompatible with the crystalline polypropylene resin, and F-4 60 as an inorganic fine powder. The mass b and D-3 2 mass% of the porous layer (B) as a dispersant were prepared by blending b in an extruder set at 250 ° C., melt-kneaded, extruded into a sheet shape through a die nozzle, and laminated on The surface of the above-mentioned longitudinal uniaxially stretched film is opposite to the surface on which the preparation e is laminated, and a laminate having a three-layer structure of e / d / b is obtained. Then, the above-mentioned laminate was reheated to 153 ° C using an oven, and then extended ten times in the transverse direction using a tenter stretcher, and then heat-treated at 170 ° C to obtain a manufacturing example of 1-axis extension / 2-axis extension / 1-axis extension 3 to 3 layers of stretched film (laminated resin film). The total thickness of the three-layer stretched film of Production Example 3 was 100 μm, wherein the thickness of the porous layer (B) was 10 μm, and the porosity of the porous layer (B) was 60%. (Production Example 4 of Laminated Resin Film) The reheating temperature when the laminate is stretched in the lateral direction is set to 158 ° C, and the heat treatment temperature after the stretch in the lateral direction is set to 160 ° C. In the same manner as in Example 3, a three-layer stretched film (laminated resin film) was obtained. The total thickness of the three-layer stretched film of Production Example 4 was 91 μm, wherein the thickness of the porous layer (B) was 9 μm, and the porosity of the porous layer (B) was 50%. In Production Example 4 of the stretched film, the same lateral stretching temperature as in Example 3 of Japanese Patent Laid-Open No. 2012-215799 was used. (Production Example 5 of Laminated Resin Film) By the same steps as those of the formation process of the longitudinal uniaxially stretched film in Production Example 1, a longitudinal uniaxially stretched film of a single layer formed from the formulation d was obtained. In addition, 42% by mass of PP-3 as a crystalline polypropylene resin, 3.5% by mass of PO-1 as a thermoplastic resin incompatible with the crystalline polypropylene resin, and 52.5% by mass of F-2 as an inorganic fine powder were included. And F-5 0.5% by mass, and D-1 0.5% by mass and D-2 1% by mass of the porous layer (B). Preparation c was melt-kneaded in an extruder set at 250 ° C. , Extruded into a sheet shape through a die nozzle, and laminated on one side of the above-mentioned longitudinal uniaxially stretched film to obtain a laminate having a two-layer structure of d / c. Then, the above-mentioned laminate was reheated to 158 ° C using an oven, and then stretched 9 times in the transverse direction using a tenter stretcher, and then heat-treated at 160 ° C to obtain 2 layers of Manufacturing Example 5 which was extended by 2 axes / 1 axis. Stretch film (laminated resin film). The total thickness of the two-layer stretched film of Production Example 5 was 95 μm, wherein the thickness of the porous layer (B) was 4 μm, and the porosity of the porous layer (B) was 30%. Table 3 summarizes the formulations and conditions used in each of the above manufacturing examples, and the porosity and oil absorption of the porous layer (B) of the laminated resin film produced. [table 3] [Production of labeled resin molded product] (Example 1) The surface of the base layer (A) side of the laminated resin film obtained in Production Example 1 was made using an offset printing machine (manufactured by Mitsubishi Heavy Industries, Ltd., machine name: Daiya Type II) and UV offset ink I-4 (manufactured by T & K TOKA (stock), trade name: BESTCURE 161 ink, ink viscosity: 25000 mPa · s) Printed designs including icons and 50% dot design. Next, a flexible printing machine (manufactured by Mark Andy, machine name: 2200) and a colorless UV flexo ink I-1 (manufactured by T & K TOKA (stock), trade name) were used for the surface of the porous layer (B) side of the film. : UV Flexo Medium 500, ink viscosity: 600 mPa · s), 600 lines / inch, 70% dot pattern. Next, the entire surface of the porous layer (B) was printed with a gravure printing machine (Okazaki Machinery Industry Co., Ltd.) and a heat sealant H-1 (manufactured by Toyomorton Co., Ltd., trade name: Adcoat 1790), and the number of lines was printed. 200 dots / inch 100% dots, punched to a size of 109 mm in width and 171 mm in length to make labels for in-mold forming. Next, a combination of blow molding using a blow molding machine (manufactured by Placo (stock), machine name: Model V-50), an automatic label supply device (manufactured by Pentel (stock)), and a bottle container with a capacity of 1,000 ml A mold is used to obtain a labeled resin molded product by an in-mold molding method. Specifically, the label for in-mold molding obtained in the above was fixed to one of the molds for blow molding using a vacuum so that the base layer (A) side was in contact with the mold, and then high-density polyethylene (Japanese polyethylene ( Co., Ltd., product name: Novatec HD HB330, melting point: 133 ° C) Coloring blue to obtain a blue resin, and melting and extruding the blue resin at 200 ° C to make a parison, which is introduced into a combination mold room Lock the combined mold and supply 4.2 kg / cm into the parison2 After the air is inflated, the parison is expanded and closely contacted with the mold to form a container shape, and the mold is then formed with a label for in-mold molding. Then, the combined mold is cooled with 10 ° C cooling water, and the mold is opened and attached in about 10 seconds. Remove the labeled hollow container and use it as a labeled resin molded product. (Examples 2 and 3) The number of lines and the dot ratio of the pattern printed on the porous layer (B) side by a flexible plate were changed as shown in Table 4. Except for this, the same method as in Example 1 was used to produce Resin molded products for labels. (Comparative Example 2) The number of lines and the dot ratio of a pattern printed on a porous layer (B) side with a flexible plate were changed as shown in Table 4, and natural-colored high-density polyethylene (Japan Polyethylene (Stock)) Manufacture, trade name: Novatec HD HB330, melting point: 133 ° C.) A hollow-shaped container was molded in place of blue high-density polyethylene, and a labeled resin molded product was produced in the same manner as in Example 1. (Examples 4 to 6, Comparative Example 1) The same procedure as in Example 1 was carried out except that the laminated resin film obtained in the production example shown in Table 4 was used instead of the laminated resin film obtained in Production Example 1. Resin molded product with label. (Comparative Example 3) An offset printing machine (Mitsubishi Heavy Industries, Ltd.) was used on the surface of the base layer (A) of a laminated resin film manufactured under the same conditions as in Example 3 described in Japanese Patent Laid-Open No. 2012-215799. Manufacture, machine name: Daiya II type) and UV offset ink I-4 (manufactured by T & K TOKA (stock), trade name: BESTCURE-161 ink, ink viscosity: 25000 mPa · s), print drawings including icons and 50% dots Its design. Next, on the surface of the porous layer (B) side of the film, the same offset printing machine as described above and a UV offset ink I-2 different from the above (manufactured by T & K TOKA (Stock), UV161 Medium S, ink viscosity: 24000 mPa · s), printing the same pattern as in Example 1. Next, in the same manner as in Example 1, a heat sealant H-1 was printed on the entire surface of the porous layer (B) side, and punched into a size of 109 mm in width and 171 mm in length to obtain a label for in-mold molding. The label was molded in-mold in the same manner as in Example 1 using blue-colored high-density polyethylene to produce a labeled resin molded product. (Example 7) On the side of the base layer (A) of the laminated resin film obtained in Production Example 1, an offset printing machine (manufactured by Mitsubishi Heavy Industries, Ltd., machine name: Daiya II) and UV offset ink I-4 were used. (Manufactured by T & K TOKA (stock), trade name: BESTCURE-161 ink, ink viscosity: 25000 mPa · s), printing designs including icons and 50% dot design. Next, on the side of the porous layer (B) of the membrane, a flexographic printing machine (manufactured by Mark Andy, machine name: 2200) and UV flexographic ink I-3 (manufactured by T & K TOKA (stock), trade name) were used. : UV Flexo 500 ink, ink viscosity: 600 mPa · s), printing pattern of 300 lines / inch, dot ratio of 90%. Next, on the entire surface of the porous layer (B) side, a gravure printing machine (Okazaki Machinery Industry Co., Ltd.) and a heat sealant H-1 (manufactured by Toyomorton Co., Ltd., trade name: Adcoat 1790) were used to print the line. Several hundred 100% dots per inch are punched out to a size of 109 mm in width and 171 mm in length to make a label for in-mold forming. Next, a combination mold for blow molding using a blow molding machine (manufactured by Placo Co., Ltd., model: V-50 type), an automatic label supply device (manufactured by Pentel Co., Ltd.), and a bottle container with a content of 1,000 ml , Resin molded products with labels are obtained by in-mold molding. Specifically, the label for in-mold molding obtained in the above was punched into a size of 109 mm in width and 171 mm in length, and the obtained label was fixed to blow molding so that the base (A) side was connected to the mold by vacuum. After using one of the combination molds, high-density polyethylene (manufactured by Japan Polyethylene Corporation, trade name: Novatec HD HB330, melting point: 133 ° C, natural color) was melt-extruded at 200 ° C to form a parison, and introduced Close the combination mold to the combination mold and supply 4.2 kg / cm into the parison2 After the air is inflated, the parison is expanded and closely contacted with the mold to form a container shape. Then, the mold is formed with a label for in-mold molding, and then the combined mold is cooled with 10 ° C cooling water. Take out the labeled hollow container and use it as a labeled resin molded product. (Examples 8 to 10) A dot-printed resin was manufactured in the same manner as in Example 7 except that the dot ratio of the pattern printed on the porous layer (B) side was changed as shown in Table 4. Molded products. (Example 11) On the side of the porous layer (B), a Meyer rod # 16 was used to apply a heat sealant by hand coating instead of the gravure heat sealant H-1, and a high density of blue was used. A labeled resin molded product was produced in the same manner as in Example 7 except that polyethylene was used instead of natural colored high-density polyethylene to form a resin molded product. (Examples 12 and 13) The dot ratio of the pattern printed on the porous layer (B) side by a flexible plate was changed as shown in Table 4, and a high-density polyethylene colored in blue was used instead of a high-density colored natural color. Except that polyethylene was used to form a resin molded product, a labeled resin molded product was produced in the same manner as in Example 7. (Examples 14 to 16, Comparative Example 4) A laminate resin film obtained in Production Example 1 was used in place of the laminate resin film obtained in Production Example 1, except that it was produced in the same manner as in Example 7 Resin molded product with label. (Comparative Example 5) An offset printing machine (Mitsubishi Heavy Industries (Stock) Co., Ltd.) was used on the surface of the base layer (A) of the laminated resin film manufactured under the same conditions as in Example 3 described in Japanese Patent Laid-Open No. 2012-215799. Manufacture, machine name: Daiya II type) and UV offset ink I-4 (manufactured by T & K TOKA (stock), trade name: BESTCURE-161 ink, ink viscosity: 25000 mPa · s), print drawings including icons and 50% dots Its design. Next, on the surface of the porous layer (B) side of the membrane, the same offset printing machine and UV offset ink I-4 (manufactured by T & K TOKA (Stock)) as those used by the base layer (A) were used, and the product name was BESTCURE. -161 ink, ink viscosity: 25000 mPa · s), printing 50% of the dot pattern. Next, in the same manner as in Example 1, a heat sealant H-1 was printed on the entire surface of the porous layer (B) side, and punched into a size of 109 mm in width and 171 mm in length to obtain a label for in-mold molding. The label is molded in-mold using natural-colored high-density polyethylene to produce a labeled resin molded product. (Example 17) On the surface of the base layer (A) of the laminated resin film obtained in Production Example 2, an offset printing machine (manufactured by Mitsubishi Heavy Industries, Ltd., machine name: Daiya II) and UV offset ink I-4 were used. (Manufactured by T & K TOKA (stock), trade name: BESTCURE-161 ink, ink viscosity: 25000 mPa · s), printing designs including icons and 50% dot design. Next, on the surface of the porous layer (B) side of the film, an inkjet printer (manufactured by Seiko Epson, Inc., machine name: PX-V630) and UV inkjet ink I-5 (CTC Japan Co., Ltd.) were used. Manufacture, trade name: KY-G2-BLACK, ink viscosity: 20 mPa · s), printing mode: ultra-fine printing dot rate: 100%. Next, the entire surface of the porous layer (B) was printed with a gravure printing machine (Okazaki Machinery Industry Co., Ltd.) and a heat sealant H-1 (manufactured by Toyomorton Co., Ltd., trade name: Adcoat 1790), and the number of lines was printed. 200 dots / inch 100% dots are punched to a size of 109 mm in width and 171 mm in length to make labels for in-mold forming. Next, a combination mold for blow molding using a blow molding machine (manufactured by Placo Co., Ltd., model: V-50 type), an automatic label supply device (manufactured by Pentel Co., Ltd.), and a bottle container with a content of 1,000 ml , By molding in the mold, a labeled resin molded product is obtained. Specifically, the label for in-mold molding obtained in the above was punched into a size of 109 mm in width and 171 mm in length, and the obtained label was fixed to blow molding so that the base (A) side was connected to the mold by vacuum. After using one of the combination molds, high-density polyethylene (manufactured by Japan Polyethylene Corporation, trade name: Novatec HD HB330, melting point: 133 ° C, natural color) was melt-extruded at 200 ° C to prepare a parison. After being introduced into the combination mold room, the combination mold is closed, and then 4.2 kg / cm is supplied into the parison.2 After the air is inflated, the parison is expanded and closely contacted with the mold to form a container shape. Then, the mold is formed with a label for in-mold molding, and then the combined mold is cooled with 10 ° C cooling water. The labeled hollow container was taken out and used as a labeled resin molded product. (Example 18) The ink for which a flexible plate was printed on the porous layer (B) side was UV flexo ink I-6 (manufactured by T & K TOKA (T & K)), trade name: UV Flexo CF ink, ink viscosity: 1200 mPa · s ), Except that a labeled resin molded product was produced in the same manner as in Example 7. (Example 19) An inkjet printer for inkjet printing on the porous layer (B) side using the laminated resin film obtained in Production Example 1 was manufactured by Seiko Epson, and the machine name was PX-V630. Inkjet Water-based inkjet ink I-7 (manufactured by Seiko Epson (stock), trade name: ICBK31 cyan, magenta, yellow, ink viscosity: 10 mPa · s), printing mode: ultra-fine printing 50% gray (R: Except for 50%, G: 50%, B: 50%), and dot ratio: 100%, a labeled resin molded product was produced in the same manner as in Example 17. The peeling strength measurement of the label from the resin molded product for the labeled resin molded product produced in each of the above Examples and Comparative Examples was performed, and the first ink pattern (P1 ) And the second ink pattern (P2 ) And the evaluation results of the adhesive tape peeling tests of Examples 7 to 19 and Comparative Examples 4 and 5 are shown in Table 5, and the labeled resins produced in the above Examples and Comparative Examples were shown. The first porous separation layer (B1 Ink pattern (P) in)1 ) Formation area and ink pattern (P1 ) Color difference ΔE in the unformed area and the second porous separation layer (B2 ) In the corresponding area (P ') or ink pattern (P2 ) Outside the area and the corresponding area (P ') or the ink pattern (P2 ) The color difference ΔE of the unformed area, and the ink pattern (P1 Color difference ΔE between the formation area and the resin molded productP , And ink pattern (P1 Color difference ΔE between the unformed area and the resin molded productB The evaluation results are shown in Table 6. [Table 4] [table 5] [TABLE 6] As shown in Table 5, regarding the resin molded product with a label manufactured in Examples 1 to 19, when the base layer (A) of the label was peeled from the resin molded product, the porous layer (B) was separated into a resin molded product side and The first porous separation layer (B) on both the base layer (A) side and the resin molded product side1 ) The first ink pattern (P1 ). In particular, regarding the resin-molded article with the label of each of Examples 1 to 6 using the label in which the porous layer (B) was printed with colorless low-viscosity ink, when the base layer (A) of the label was peeled from the resin-molded product, The first porous separation layer (B1 ) The first ink pattern (P1 ). At this time, as shown in Table 6, the ink pattern (P1 The color difference ΔE between the formation area (printed area) and the ink pattern unformed area (blank area) exceeds 3, which can be determined as different system colors. The visibility of the ink pattern is practical. On the other hand, regarding the labeled resin molded articles of Examples 1 to 3 and Example 5, the second porous separation layer (B) was peeled off along with the label having the base layer (A).2 The ink pattern is not seen in the corresponding region (P '). In addition, regarding the resin-molded article with the label of each of Examples 7 to 19 using the label printed on the porous layer (B) side with colored flexo ink or colored inkjet ink, the first porous material was on the resin-molded article side. Mass separation layer (B1 ), And the second porous separation layer (B, which is peeled off with the label having the base layer (A)2 ) The ink pattern (P1 ) And 2nd ink pattern (P2 ). At this time, as shown in Table 6, the first porous separation layer (B1 Ink pattern (P)1 ), The second porous separation layer (B2 ) On the second ink pattern (P2 ), The color difference ΔE of the ink pattern forming area (printed part) and the ink pattern non-formed area (blank part) exceeds 3, which can be determined as different system colors. The visibility of the ink pattern is practical. Furthermore, in each of the labeled resin molded articles of Examples 7 to 19, the label appeared on the second porous separation layer (B2 ) On the second ink pattern (P2 ) In the second porous separation layer (B2 Since the ink pattern can be seen on both the fracture surface of) and the adhesive surface of the adhesive tape, it can be confirmed that the ink composition penetrates to a deeper position of the porous layer (B). On the other hand, among the labeled resin molded products manufactured in Comparative Examples 1 and 4, the first porous separation layer (B1 ) And the second porous separation layer (B2 No ink pattern was visible on any of the fractured surfaces. The reason is considered to be that the porous layer (B) of the laminated resin film of Production Example 5 had low porosity and poor oil absorption, and therefore the ink composition did not penetrate into the porous layer (B) even when ink with a low viscosity was used. ) Inside. In addition, in the porous resin layer (B), a laminated resin film produced under the same conditions as in Example 3 of Japanese Patent Application Laid-Open No. 2012-215799 was used for the labeled resin molded articles of Comparative Examples 3 and 5. Poor oil absorption, suggesting that the ink composition has a low permeability. Furthermore, the ink composition I-2 having a high viscosity for printing on the porous layer (B) side of the laminated resin film and the UV offset ink (T & K TOKA ( Co., Ltd.) Product name: BESTCURE-161, Ink viscosity: 25000 mPa · s, Ink composition I-4) In the labeled resin molded product, the first porous separation layer (B1 ) And the second porous separation layer (B2 ) No ink pattern was visible on any of the fractured surfaces. It is speculated that the reason is that the ink having a relatively high viscosity stays near the surface of the porous layer (B), but hardly penetrates into the inside of the layer. In addition, according to the comparison of Examples 2, 3, and Comparative Example 2 in which the dot ratio of the ink pattern printed on the porous layer (B) was changed from Example 1, and the dot was changed in the same manner as in Example 7. The comparison of Examples 8 and 9 and Examples 10 and 13 shows that the lower the dot ratio of the ink pattern, the more difficult it is for the ink composition to penetrate into the porous layer (B), and the more difficult it becomes. The first porous separation layer (B1 ) And the second porous separation layer (B2 ) Of the ink pattern. As shown in Table 5, if the laminated resin film of Production Example 1 and the laminated resin film of Production Example 3 were compared with those of Production Example 2 which were 5 ° C higher than the temperature during the lateral extension and 10 ° C lower during the heat treatment, The laminated resin film and the laminated resin film of Manufacturing Example 4 were compared. The porosity of the porous layer (B) in the laminated resin films of Manufacturing Examples 2 and 4 was smaller than the porous layer of the laminated resin film of Manufacturing Examples 1 and 3. B) Porosity. Accordingly, as shown in Table 6, if the labeled resin molded articles of Examples 1 and 5 using the laminated resin films of Manufacturing Examples 1 and 3 and Example 4 using the laminated resin films of Manufacturing Examples 2 and 4 were used In comparison with the labeled resin molded product of 6, in Examples 4 and 6, the first porous separation layer (B1 Ink pattern (P)1 ) Slightly unclear. This means that the porous layer (B) in Examples 4 and 6 has a shallower penetration depth than the porous layer (B) in Examples 1 and 5. Similarly, if the labeled resin molded articles of Examples 7 and 15 using the laminated resin films of Manufacturing Examples 1 and 3 and the labeled resin examples of Examples 14 and 16 using the laminated resin films of Manufacturing Examples 2 and 4 are used Comparing resin molded products, the second porous separation layer (B2 Ink pattern (P)2 )Not clear. This means that the porous layer (B) in Examples 14 and 16 has a shallower penetration depth than the porous layer (B) in Examples 7 and 15. Therefore, it was found that in order to make the ink composition penetrate deeper into the porous layer (B), it is preferable to increase the porosity of the porous layer (B), and it is more preferable to extend laterally when the porous layer (B) is formed. The temperature is set lower, and the heat treatment temperature is set higher. It was also found that it is preferable to use an ink having a low viscosity.

1‧‧‧樹脂成形品
2‧‧‧標籤
3‧‧‧附標籤之樹脂成形品
11‧‧‧空隙
12‧‧‧墨水組合物
21‧‧‧未形成第1墨水圖案之圖案未形成區域
22‧‧‧未形成第2墨水圖案之圖案未形成區域
A‧‧‧基層
B‧‧‧多孔質層
B1‧‧‧第1多孔質分離層(樹脂成形品側)
B2‧‧‧第2多孔質分離層(基層側)
P‧‧‧墨水圖案
P'‧‧‧墨水圖案之對應區域
P1‧‧‧第1墨水圖案
P2‧‧‧第2墨水圖案
1‧‧‧resin molding
2‧‧‧ tags
3‧‧‧Labeled resin molded products
11‧‧‧Gap
12‧‧‧ ink composition
21‧‧‧No patterned area where the first ink pattern is not formed
22‧‧‧No pattern area where the second ink pattern is not formed
A‧‧‧ Grassroots
B‧‧‧ porous layer
B 1 ‧‧‧ 1st porous separation layer (resin molded product side)
B 2 ‧‧‧ 2nd porous separation layer (base layer side)
P‧‧‧ Ink Pattern
Corresponding area of P'‧‧‧ ink pattern
P 1 ‧‧‧The first ink pattern
P 2 ‧‧‧ 2nd ink pattern

圖1係表示本發明之附標籤之樹脂成形品之一態樣的正視圖。 圖2係表示於本發明中使用之標籤之多孔質層(B)表面所形成之墨水圖案(P)之一例的俯視圖。 圖3係表示本發明中使用之標籤之一態樣的剖視圖。 圖4係表示於本發明之附標籤之樹脂成形品之一例中自該樹脂成形品將具有基層(A)之標籤剝離後之狀態,(a)係表示具有將標籤剝離後殘存之第1多孔質分離層(B1 )之樹脂成形品的正視圖,(b)係自第2多孔質分離層(B2 )側觀察被剝離之標籤的俯視圖。 圖5係表示於本發明之附標籤之樹脂成形品之另一例中,自該樹脂成形品將具有基層(A)之標籤剝離後之狀態,(a)係表示具有將標籤剝離後殘存之第1多孔質分離層(B1 )之樹脂成形品的正視圖,(b)係自第2多孔質分離層(B2 )側觀察被剝離之標籤的俯視圖。FIG. 1 is a front view showing an aspect of a labeled resin molded product according to the present invention. 2 is a plan view showing an example of an ink pattern (P) formed on the surface of a porous layer (B) of a label used in the present invention. FIG. 3 is a cross-sectional view showing one aspect of a tag used in the present invention. FIG. 4 shows a state where a label having a base layer (A) is peeled from the resin molded product in an example of a labeled resin molded product according to the present invention, and (a) shows a state where a first porous body is left after peeling the label A front view of the resin molded article of the mass separation layer (B 1 ), (b) is a plan view of the peeled label viewed from the second porous separation layer (B 2 ) side. FIG. 5 shows a state where the label having the base layer (A) is peeled from the resin molded product in another example of the labeled resin molded product according to the present invention, and (a) shows a state where the label is left after the label is peeled. 1 is a front view of a resin molded article of the porous separation layer (B 1 ), and (b) is a plan view of the peeled label as viewed from the second porous separation layer (B 2 ) side.

1‧‧‧樹脂成形品 1‧‧‧resin molding

2‧‧‧標籤 2‧‧‧ tags

3‧‧‧附標籤之樹脂成形品 3‧‧‧Labeled resin molded products

Claims (26)

一種附標籤之樹脂成形品,其特徵在於:其係具有樹脂成形品、與貼附於該樹脂成形品之標籤者,並且 上述標籤包括基層(A)、設置於該基層(A)上之多孔質層(B)、存在於該多孔質層(B)內部之空隙、及以佔據該空隙之一部分之方式存在之墨水組合物, 上述標籤係以上述多孔質層(B)側之表面貼附於上述樹脂成形品, 自上述多孔質層(B)之端面以多孔質層(B)沿厚度方向成為2部分之方式形成切口,並以該切口擴大之方式拉伸上述基層(A)而自上述樹脂成形品剝離上述標籤時,上述多孔質層(B)分離為在貼附於上述樹脂成形品之狀態下殘留之第1多孔質分離層(B1 )、及伴隨上述基層(A)而剝離之第2多孔質分離層(B2 ),並且上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面出現由上述墨水組合物形成之第1墨水圖案(P1 ), 上述第1墨水圖案(P1 )可藉由目視進行確認。A resin molded product with a label, comprising: a resin molded product and a label attached to the resin molded product; and the label includes a base layer (A) and a porous layer provided on the base layer (A). The porous layer (B), the voids existing inside the porous layer (B), and the ink composition existing so as to occupy a part of the voids, the label is attached on the surface of the porous layer (B) side In the resin molded article, a cut is formed from the end surface of the porous layer (B) so that the porous layer (B) becomes two parts in the thickness direction, and the base layer (A) is stretched so that the cut is enlarged. When the resin molded product peels off the label, the porous layer (B) is separated into a first porous separation layer (B 1 ) remaining in a state of being adhered to the resin molded product, and the base layer (A) is accompanied by the The second porous separation layer (B 2 ) is peeled off, and a first ink pattern (P 1 ) formed by the ink composition appears on a surface of the first porous separation layer (B 1 ) opposite to the resin molded product. ), the first ink pattern (P 1) can be determined by visually . 如請求項1之附標籤之樹脂成形品,其中上述第1墨水圖案(P1 )係將上述墨水組合物供給至上述多孔質層(B)之與上述基層(A)相反側之表面,使墨水組合物滲透至多孔質層(B)之空隙之內部而成者。For example, the labeled resin molded product according to claim 1, wherein the first ink pattern (P 1 ) is to supply the ink composition to a surface of the porous layer (B) opposite to the base layer (A) so that The ink composition penetrates into the voids of the porous layer (B). 如請求項1之附標籤之樹脂成形品,其中上述墨水組合物為實質上不含色材之無色之墨水組合物。The labeled resin molded article according to claim 1, wherein the ink composition is a colorless ink composition substantially free of a color material. 如請求項3之附標籤之樹脂成形品,其中於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面,形成有上述第1墨水圖案(P1 )之圖案形成區域內之複數個空隙經上述無色之墨水組合物所充填,上述圖案形成區域與未形成上述第1墨水圖案(P1 )之圖案非形成區域之間不透明度不同。For example, the labeled resin molded product of claim 3, wherein the first porous separation layer (B 1 ) is formed on the surface opposite to the resin molded product with a pattern of the first ink pattern (P 1 ). a plurality of voids within the region by the above-described ink composition as colorless filled by the pattern forming region of the first ink pattern (P 1) is not formed in the pattern non-forming region between the different opacity. 如請求項3之附標籤之樹脂成形品,其中於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面中未形成上述第1墨水圖案(P1 )之圖案非形成區域與上述樹脂成形品之表面之色差(ΔEB )、與於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面中形成有上述第1墨水圖案(P1 )之圖案形成區域與上述樹脂成形品之表面之色差(ΔEP )的差(ΔEB -ΔEP )為1~50。For example, the labeled resin molded product of claim 3, wherein the pattern of the first ink pattern (P 1 ) is not formed on the surface of the first porous separation layer (B 1 ) opposite to the resin molded product. The color difference (ΔE B ) between the formation area and the surface of the resin molded product, and the first ink pattern (P 1) is formed on a surface of the first porous separation layer (B 1 ) opposite to the resin molded product. The difference (ΔE B −ΔE P ) between the color difference (ΔE P ) of the pattern formation region and the surface of the resin molded product is 1 to 50. 如請求項3之附標籤之樹脂成形品,其中於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面,形成有上述第1墨水圖案(P1 )之圖案形成區域與未形成上述第1墨水圖案(P1 )之圖案非形成區域的色差ΔE為3以上。For example, the labeled molded resin article of claim 3, wherein the first porous separation layer (B 1 ) is formed on the surface of the resin porous molded article on the side opposite to the molded resin, and the first ink pattern (P 1 ) is patterned. The color difference ΔE between the region and the pattern non-formation region where the first ink pattern (P 1 ) is not formed is 3 or more. 如請求項3之附標籤之樹脂成形品,其中於為上述第2多孔質分離層(B2 )之與上述基層(A)相反側之表面且與上述第1墨水圖案(P1 )為鏡像關係之對應區域(P'),無法藉由目視而確認墨水圖案。For example, the labeled resin molded product of claim 3, wherein the second porous separation layer (B 2 ) is a surface opposite to the base layer (A) and mirrors the first ink pattern (P 1 ). The corresponding area (P ') of the relationship cannot be confirmed by visual inspection of the ink pattern. 如請求項7之附標籤之樹脂成形品,其中上述對應區域(P')之空隙之內部存在上述墨水組合物。For example, the labeled resin molded article according to claim 7, wherein the ink composition is present inside a void in the corresponding region (P '). 如請求項1之附標籤之樹脂成形品,其中上述墨水組合物為包含色材之有色之墨水組合物。The labeled resin molded article according to claim 1, wherein the ink composition is a colored ink composition containing a color material. 如請求項9之附標籤之樹脂成形品,其中自上述多孔質層(B)之端面以多孔質層(B)沿厚度方向成為2部分之方式形成切口,並以該切口擴大之方式拉伸上述基層(A)而將上述標籤自上述樹脂成形品剝離時,上述墨水組合物較多孔質層(B)之剝離面更滲透至上述基層(A)側內部之空隙,藉此於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面出現由上述墨水組合物形成之第1墨水圖案(P1 ),並且於伴隨上述基層(A)而剝離之上述第2多孔質分離層(B2 )之與上述基層(A)相反側之表面出現由上述墨水組合物形成之第2墨水圖案(P2 ),且上述第2墨水圖案(P2 )可藉由目視進行確認。For example, the labeled resin molded article of claim 9, wherein the porous layer (B) has two slits formed in the thickness direction from the end face of the porous layer (B), and is stretched so that the slit is enlarged. When the label is peeled from the resin molded product by the base layer (A), the ink composition penetrates into the voids in the base layer (A) side more than the release surface of the porous layer (B), thereby allowing the first A first ink pattern (P 1 ) formed by the ink composition appears on a surface of the porous separation layer (B 1 ) opposite to the resin molded product, and the second porous layer is peeled off along with the base layer (A). The second ink pattern (P 2 ) formed by the ink composition appears on the surface of the mass separation layer (B 2 ) opposite to the base layer (A), and the second ink pattern (P 2 ) can be visually checked. confirm. 如請求項10之附標籤之樹脂成形品,其中於上述第2多孔質分離層(B2 )之與上述基層相反側之表面中,形成有上述第2墨水圖案(P2 )之圖案形成區域與未形成上述第2墨水圖案(P2 )之圖案非形成區域的色差ΔE為3以上。For example, the labeled resin molded article of claim 10, wherein a pattern forming region of the second ink pattern (P 2 ) is formed on a surface of the second porous separation layer (B 2 ) opposite to the base layer. The color difference ΔE from the pattern non-formation region where the second ink pattern (P 2 ) is not formed is 3 or more. 如請求項10之附標籤之樹脂成形品,其中上述第1墨水圖案(P1 )與上述第2墨水圖案(P2 )互為鏡像關係。For example, the labeled resin molded article of claim 10, wherein the first ink pattern (P 1 ) and the second ink pattern (P 2 ) are in a mirror image relationship with each other. 如請求項10之附標籤之樹脂成形品,其中於將黏著帶之黏著面貼附於上述第2多孔質分離層(B2 )之表面之上述第2墨水圖案(P2 )之表面後,將上述黏著帶自上述第2多孔質分離層(B2 )以180°之剝離角及300 mm/min之速度進行剝離時,於上述第2多孔質分離層(B2 )之表面可藉由目視而確認上述第2墨水圖案(P2 ),並且於上述黏著帶之黏著面可藉由目視而確認上述第2墨水圖案(P2 )之反轉圖案。For example, the labeled resin molded article of claim 10, wherein the adhesive surface of the adhesive tape is adhered to the surface of the second ink pattern (P 2 ) on the surface of the second porous separation layer (B 2 ), When the adhesive tape is peeled from the second porous separation layer (B 2 ) at a peeling angle of 180 ° and a speed of 300 mm / min, the surface of the second porous separation layer (B 2 ) can be removed by The second ink pattern (P 2 ) can be visually confirmed, and the inversion pattern of the second ink pattern (P 2 ) can be confirmed by visual inspection on the adhesive surface of the adhesive tape. 如請求項1至13中任一項之附標籤之樹脂成形品,其中上述多孔質層(B)自厚度方向之剖面進行觀察之空隙率為30~70%。The labeled resin molded article according to any one of claims 1 to 13, wherein the porosity of the porous layer (B) as viewed from a cross section in the thickness direction is 30 to 70%. 如請求項1至13中任一項之附標籤之樹脂成形品,其中上述多孔質層(B)自厚度方向之剖面進行觀察之空隙率大於上述基層(A)自厚度方向之剖面進行觀察之空隙率。The labeled resin molded article according to any one of claims 1 to 13, wherein the porosity of the porous layer (B) as viewed from a cross section in the thickness direction is larger than that of the base layer (A) as viewed from a cross section in the thickness direction. Void ratio. 如請求項1至13中任一項之附標籤之樹脂成形品,其中自上述樹脂成形品將具有上述基層(A)之標籤剝離時,依據JIS Z 1707:1997食器包裝用塑膠膜通則所獲得之180°剝離強度為0.3~1.6 N/15 mm。If the labeled resin molded article according to any one of claims 1 to 13 is obtained by peeling a label having the above-mentioned base layer (A) from the resin molded article, it is obtained in accordance with JIS Z 1707: 1997 General Rules for Plastic Films for Food Packaging The 180 ° peel strength is 0.3 to 1.6 N / 15 mm. 一種附多孔質層之樹脂成形品,其係具有自如請求項1至16中任一項之附標籤之樹脂成形品將基層(A)及第2多孔質分離層(B2 )剝離後所殘留的樹脂成形品與第1多孔質分離層(B1 )者。A resin molded product with a porous layer, which is a residue of the resin molded product with a label according to any one of claims 1 to 16 after the base layer (A) and the second porous separation layer (B 2 ) are peeled off. And the first porous separation layer (B 1 ). 如請求項17之附多孔質層之樹脂成形品,其中於上述第1多孔質分離層(B1 )之與上述樹脂成形品相反側之表面具有由墨水組合物形成之第1墨水圖案(P1 )。For example, the resin-molded article with a porous layer according to claim 17, wherein the surface of the first porous separation layer (B 1 ) opposite to the resin-molded article has a first ink pattern (P 1 ). 一種附標籤之樹脂成形品之製造方法,其係製造如請求項1至16中任一項之附標籤之樹脂成形品的方法,並且具有如下步驟:積層樹脂膜形成步驟,其形成具有基層(A)與設置於該基層之上之多孔質層(B)之積層樹脂膜,印刷步驟,其於上述積層樹脂膜之上述多孔質層(B)之與上述基層(A)相反側之表面印刷墨水組合物形成墨水圖案而獲得標籤,及成形步驟,其將形成有上述墨水圖案之上述標籤以上述基層(A)側成為模具之內壁側、上述多孔質層(B)側成為空腔側而可與熔融樹脂相接之方式插入上述模具內,藉由模內成形法而獲得附標籤之樹脂成形品。A method for manufacturing a labeled resin molded article, which is a method for manufacturing a labeled resin molded article according to any one of claims 1 to 16, and has the following steps: a laminated resin film forming step that forms a substrate having a base layer ( A) A laminated resin film with a porous layer (B) provided on the base layer, and a printing step of printing on the surface of the porous layer (B) of the laminated resin film on the opposite side of the base layer (A) The ink composition forms an ink pattern to obtain a label, and a molding step in which the above-mentioned label on which the ink pattern is formed is an inner wall side of a mold with the base layer (A) side and a cavity side with the porous layer (B) side. In addition, it can be inserted into the above-mentioned mold so as to be in contact with the molten resin, and a labeled resin molded product can be obtained by an in-mold molding method. 如請求項19之附標籤之樹脂成形品之製造方法,其中上述墨水組合物無色且透明。The method for producing a labeled resin molded article according to claim 19, wherein the ink composition is colorless and transparent. 如請求項19之附標籤之樹脂成形品之製造方法,其中上述第1墨水圖案(P1 )與上述樹脂成形品之表面之色差ΔEP0 未達3。For example, the method for manufacturing a labeled resin molded article according to claim 19, wherein the color difference ΔE P0 between the first ink pattern (P 1 ) and the surface of the resin molded article is less than 3. 如請求項19之附標籤之樹脂成形品之製造方法,其中上述墨水組合物有色,且上述第1墨水圖案(P1 )與多孔質層(B)之色差ΔE0 為3以上。The method for manufacturing a labeled resin molded article according to claim 19, wherein the ink composition is colored, and a color difference ΔE 0 between the first ink pattern (P 1 ) and the porous layer (B) is 3 or more. 如請求項19至22中任一項之附標籤之樹脂成形品之製造方法,其中上述墨水組合物利用JIS Z8803:2011之B型黏度計所測得之黏度為10~1500 mPa・s。The method for producing a labeled resin molded article according to any one of claims 19 to 22, wherein the viscosity of the ink composition measured by a type B viscometer of JIS Z8803: 2011 is 10 to 1500 mPa · s. 如請求項19至22中任一項之附標籤之樹脂成形品之製造方法,其中於上述印刷步驟中,使用軟版印刷法作為墨水組合物之印刷方法。The method for manufacturing a labeled resin molded article according to any one of claims 19 to 22, wherein in the above printing step, a flexographic printing method is used as a printing method of the ink composition. 如請求項19至22中任一項之附標籤之樹脂成形品之製造方法,其中於上述印刷步驟與上述成形步驟之間具有如下步驟:於形成有上述墨水圖案之上述多孔質層之表面印刷熱密封樹脂組合物。The method for producing a labeled resin molded article according to any one of claims 19 to 22, wherein between the above-mentioned printing step and the above-mentioned forming step, there is a step of printing on a surface of the porous layer on which the ink pattern is formed Heat-sealing resin composition. 如請求項19至22中任一項之附標籤之樹脂成形品之製造方法,其中於上述印刷步驟與上述成形步驟之間具有如下步驟:於形成有上述墨水圖案之上述多孔質層之表面塗敷熱密封樹脂組合物。The method for manufacturing a labeled resin molded article according to any one of claims 19 to 22, wherein between the printing step and the molding step, there is a step of coating the surface of the porous layer on which the ink pattern is formed. Apply a heat-sealing resin composition.
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WO2015132812A1 (en) * 2014-03-03 2015-09-11 株式会社ユポ・コーポレーション Film and plastic container with label

Cited By (3)

* Cited by examiner, † Cited by third party
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CN113168787A (en) * 2019-01-21 2021-07-23 优泊公司 Label-attached resin molded article, method for producing label-attached resin molded article, and label
CN113168787B (en) * 2019-01-21 2023-03-10 优泊公司 Label-attached resin molded article, method for producing label-attached resin molded article, and label
CN113001881A (en) * 2019-12-20 2021-06-22 德隆奇电器单一股东有限责任公司 Method and device for producing plastic parts, and plastic parts

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