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WO2018103012A1 - 微结构转移膜的制造方法及微结构转移膜 - Google Patents

微结构转移膜的制造方法及微结构转移膜 Download PDF

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Publication number
WO2018103012A1
WO2018103012A1 PCT/CN2016/108869 CN2016108869W WO2018103012A1 WO 2018103012 A1 WO2018103012 A1 WO 2018103012A1 CN 2016108869 W CN2016108869 W CN 2016108869W WO 2018103012 A1 WO2018103012 A1 WO 2018103012A1
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WIPO (PCT)
Prior art keywords
layer
microstructure
transfer film
transfer
polyethylene
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PCT/CN2016/108869
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English (en)
French (fr)
Inventor
庄新烈
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Individual
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Individual
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Priority to PCT/CN2016/108869 priority Critical patent/WO2018103012A1/zh
Publication of WO2018103012A1 publication Critical patent/WO2018103012A1/zh
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes

Definitions

  • the present invention relates to a method for manufacturing a microstructure transfer film and a microstructure transfer film, in particular, the method for manufacturing the method can greatly reduce the process, reduce the cost, and save space, and the substrate layer can be kept flat after the substrate is peeled off. For recycling and reuse.
  • a microstructured film that is, an evaporation film having a laser holographic structure on the surface, such as a cat's eye, a lens, a hologram, a floating image, etc., which can utilize light interference to produce a colorful color, and the pattern is obviously colorful and bright, It has excellent effects and anti-counterfeiting effect, and is widely used in various high-quality boutique packaging.
  • a common microstructure film can be applied to a high-grade wine packaging box after being covered with paper, but it cannot be used on a cigarette packaging box, mainly because of the relevant laws and regulations, and the micro-package box.
  • the structural film must use transfer paper, that is, the transfer film should be first transferred to the paper.
  • FIG. 6 is a schematic diagram of the production of the conventional microstructure transfer film 90.
  • a roll of substrate layer 910 is prepared, and a front end of the substrate layer 910 is coated with a hardened resin transfer layer 920, that is, ultraviolet rays, through a coating head R3 on the roll R1 and the stocker R2.
  • a hardened resin transfer layer 920 that is, ultraviolet rays
  • the hardenable glue passes through the support wheel R4 to the roller group R5 on the other side, and then the hardenable resin transfer layer (UV glue) 920 on the substrate layer 910 is rolled over a microstructured wheel R6,
  • the ultraviolet irradiation unit R7 disposed on the opposite side is irradiated and shaped to form a microstructured surface 930 on the hardenable resin transfer layer 920.
  • a metal reflective layer is deposited on the microstructured surface 930. 940, and a hot melt adhesive layer 951 is further disposed on the metal reflective layer 940 to facilitate subsequent transfer to the tray 4 or the surface of the paper.
  • the substrate layer 910 will be twisted and wrinkled instantaneously after being torn off, and it is impossible to roll and recycle and waste, which is a major defect.
  • the main object of the present invention is to provide a method for manufacturing a microstructure transfer film and a microstructure transfer film. , its steps include:
  • Step a Incompatible two thermoplastic polymer materials are coextruded by two layers, extruded from a T-die to form a two-layer extrudate, one side of which forms a substrate layer, and the other side is attached a transfer layer
  • Step b. through a back pressure wheel and a surface of the micro-structured wheel, the two-layer extrudate is extruded into a film, and a microstructured surface is formed on the transfer layer, and;
  • Step c Forming a metal reflective layer on the microstructured surface to form a microstructure transfer film.
  • the step a is to put two incompatible thermoplastic polymer raw materials into two extruders, and after splitting by melt extruding and splitting, form two layers from a T-die.
  • a cooling layer and a winding wheel are firstly cooled to form a composite layer semi-finished product; and then step c is performed to form a metal reflective layer on the surface of the microstructure surface by aluminum evaporation.
  • the transfer layer is one of polypropylene (PP) and polyethylene (PE); and the substrate layer is polybutylene terephthalate (PBT), polyacetal resin ( POM), super crosslinked polymers (HCPs), polyethylene terephthalate (PET), polycarbonate (PC) and polyamide (PA).
  • PBT polybutylene terephthalate
  • POM polyacetal resin
  • HCPs super crosslinked polymers
  • PET polyethylene terephthalate
  • PC polycarbonate
  • PA polyamide
  • the transfer layer is a copolymer of polyethylene, polypropylene, polyethylene, a copolymer of polypropylene or a mixture containing polyethylene or polypropylene.
  • the substrate layer is polyethylene terephthalate.
  • the content of polyethylene and polypropylene in the mixture containing polyethylene and polypropylene is higher than 50%.
  • the mixture containing polyethylene and polypropylene further comprises a trace additive, which is a slip agent or a slip agent.
  • the article of the present invention is a microstructure transfer film, which mainly comprises: a substrate layer, a transfer layer, a microstructured surface and a metal reflective layer, wherein the substrate layer and the transfer layer are two An incompatible thermoplastic polymer consisting of two-layer co-extrusion extrusion, the microstructured surface being formed on the transfer layer by pressing a back pressure wheel and a plate wheel having a microstructure on the surface, and; the metal reflective layer It is formed on the microstructured surface by evaporation. And wherein the metal reflective layer is further provided with a hot melt adhesive layer.
  • the microstructure transfer film is simpler and faster to manufacture, and the cost reduction process can be greatly reduced to save space, and the substrate layer can be kept flat for recycling after application.
  • FIG. 1 is a flow chart of a method for fabricating a microstructure transfer film of the present invention.
  • FIG. 2 is a schematic view showing the production of a method for manufacturing a microstructure transfer film of the present invention.
  • FIG. 3 is a cross-sectional view of a microstructure transfer film article of the present invention.
  • FIG. 4 is a schematic view showing the application of the microstructure transfer film product of the present invention.
  • FIG. 5 is a cross-sectional view showing the application of the microstructure transfer film article of the present invention.
  • FIG. 6 is a schematic view showing the production of a conventional method for manufacturing a microstructure transfer film.
  • FIG. 7 is a cross-sectional view showing the application of a conventional microstructure transfer film product.
  • the manufacturing method of the microstructure transfer film 20 of the present invention the main steps include:
  • Step a Incompatible two thermoplastic polymers 210, 220 raw materials are coextruded by two layers, extruded by a T-die 13 to form a two-layer extrudate, and a substrate layer is formed. 21, the other side attached to a transfer layer 22
  • Step b The bilayer extrudate is extruded into a film by a back pressure wheel 14 and a plate wheel 15 having a microstructure 151 on the surface, and a microstructured surface 23 is formed on the transfer layer 22. as well as;
  • Step c vapor deposition on the microstructured surface 23 to form a metal reflective layer 24 to form a microstructure transfer film 20;
  • thermoplastic polymers More specifically, as shown in FIG. 2, wherein the step of performing the step a. two incompatible thermoplastic polymers can be used.
  • 210, 220 raw materials are placed in two extruders 11, 12, formed by melt extrusion and shunt splitting
  • the two layers are extruded from the T-die 13 to be cooled by the plate wheel 15, and the film is formed by extrusion of the back pressure wheel 14, so that one substrate layer 21 is formed on one side and a transfer layer 22 is attached to the other side;
  • a microstructure surface 23 is formed on the transfer layer 22.
  • a cooling layer 16 and a winding wheel 17 are first passed to form a composite layer semi-finished product by cooling, but the actual manufacturing is not Limits, of course, can be achieved by other cooling or retracting methods.
  • Step c is further performed; and the metal reflective layer 24 is deposited on the microstructured surface 23 of the transfer layer 22 by an evaporation machine (not shown), usually an aluminum metal film, as shown in FIG. Microstructure transfer mold 20.
  • the microstructure transfer film 20 is made simpler and faster to manufacture, and the cost reduction process can be greatly reduced.
  • the microstructure transfer film 20 produced by the method of the present invention mainly comprises: a substrate layer 21, a transfer layer 22, a microstructured surface 23 and a metal reflective layer 24, wherein the base
  • the material layer 21 and the transfer layer 22 are two incompatible thermoplastic polymers 210, 220, which are formed by two-layer co-extrusion extrusion, and the microstructured surface 23 is provided with a microstructure 151 on the back pressure wheel 14 and the surface.
  • the plate wheel 15 is extruded to be formed on the transfer layer 22, and the metal reflective layer 24 is formed on the microstructured surface 23 by evaporation.
  • the microstructure transfer film 20 is composed of the transfer layer 22 on the upper side of the substrate layer 21, and the microstructure surface 23 is formed on the transfer layer 22 by embossing.
  • the metal reflective layer 24 is formed on the microstructured surface 23 by vapor deposition.
  • the vapor deposition material of the metal reflective layer 24 is, for example but not limited to, aluminum.
  • the thermoplastic polymer 220 used in the transfer layer 22 is, for example but not limited to, a copolymer of polyethylene, polypropylene, polyethylene, a copolymer of polypropylene or contains polyethylene, poly
  • the cost of a mixture of propylene is about 10 yuan to 20 yuan per kilogram.
  • the UV adhesive transfer layer is about 60 yuan to 100 yuan per kilogram, which can achieve a substantial reduction in the microstructure transfer film 20 Manufacturing cost
  • the content of the mixture containing polyethylene and polypropylene is, for example but not limited to, more than 50%, and the mixture containing polyethylene and polypropylene further includes a trace additive, the trace addition For example, but not limited to, a slip or slip agent.
  • the base material layer 21 may be a thermoplastic polymer 210 that is incompatible with polypropylene (PP), so that the transfer layer 22 and the substrate are formed after film formation.
  • the layers 21 are not sticky to each other, and are only in a temporary fit state, and can be quickly branched by applying an appropriate external force.
  • the substrate layer 21 may be polybutylene terephthalate (PBT) or polyacetal resin ( POM), super crosslinked polymers (HCPs), polyethylene terephthalate (PET), polycarbonate (PC), and polyamide (PA, nylon).
  • the article microstructure transfer mold 20 of the method of the present invention is made of two thermoplastic polymers 210, 220 whose transfer layer 22 is incompatible with the substrate layer 21. They are not sticky to each other, only in a temporary fit state, and they can be quickly separated by applying appropriate external force.
  • a hot melt adhesive layer 31 is disposed on the metal reflective layer 24 of the actual application. After the transfer is applied to the surface of the paper box 4, after the base material layer 21 is peeled off, the entire substrate layer 21 can be kept flat for recycling. , is the biggest feature of the invention.
  • the provided microstructure transfer mold 20 manufacturing method and microstructure transfer mold 20 are indeed progressive and can successfully overcome the defects of the existing manufacturing method and its finished product application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Abstract

一种微结构转移膜的制造方法及微结构转移膜，主要步骤包括：步骤a.将不相容的两种热塑性聚合物原料经双层共挤压押出，由T形模头挤出形成一双层挤出物，一边形成一基材层，另一边依附一转移层；步骤b.通过一背压轮与一表面设有微结构的版轮，使双层挤出物挤压成膜，并在该转移层上形成一微结构面，以及；步骤c.在微结构面上蒸镀形成一金属反射层，以制成微结构转移膜；借此，使微结构转移膜制造上更为简单快速，可大幅降低成本缩减制程节省空间，应用上基材层撕离后又能保持平整以供回收再利用。

Description

微结构转移膜的制造方法及微结构转移膜 技术领域
[0001] 本发明涉及一种微结构转移膜的制造方法及微结构转移膜， 尤其是指其制法可 大幅缩减制程降低成本节省空间， 而制品应用上基材层撕离后又能保持平整以 供回收再利用。
背景技术
[0002] 微结构膜， 即表面具有雷射全像微结构纹路的蒸镀薄膜， 如猫眼、 透镜、 全息 、 浮影等， 其可利用光线干涉产生七彩颜色， 图案明显色彩斑斓亮丽， 虹光效 果佳又兼具有防伪效果， 被广泛地应用在各种优质的精品包装上。
[0003] 常见的微结构膜可与纸张覆合后， 再应用到高档酒类的包装盒上， 但却无法用 于香烟包装盒上， 主要是碍于相关法律规定， 香烟包装盒上的微结构膜必须使 用转移纸， 也即要先做成转移膜再转移至纸张上。
[0004] 请参照图 6所示， 为传统微结构转移膜 90的生产示意图。 制造吋， 先备好一卷 基材层 910， 生产前端通过滚筒 R1及储料盘 R2上的涂布头 R3， 在基材层 910的一 面涂布上一可硬化树脂转移层 920， 即紫外线可硬化胶 (UV胶)， 中间经过支持轮 R4到达另一边的滚轮组 R5， 再使基材层 910上的可硬化树脂转移层 (UV胶) 920滚 过一微结构版轮 R6， 同吋用间隔设在对侧的紫外线照射单元 R7进行照射定形固 化， 让可硬化树脂转移层 920上形成一微结构面 930， 如图 7所示， 再于微结构面 930上蒸镀一金属反射层 940， 并在金属反射层 940再设一热熔胶层 951， 以方便 后续转移到纸盒 4或纸张表面上应用。
技术问题
[0005] 但可硬化树脂转移层 920的 UV胶材料成本相当昂贵， 现约每公斤人民币 60元〜 1
00元， 致使制造成本大幅增加。 而且， 当传统微结构转移膜 90转移至纸张上应 用吋， 该基材层 910—旦被撕离后， 即会瞬间产生扭曲变皱， 无法成卷回收再利 用造成浪费， 为其主要缺陷。
问题的解决方案 技术解决方案
[0006] 为解决前述现有的微结构转移膜的生产制造物料成本过高及其产品应用上的缺 陷， 本发明的主要目的， 在于提供一种微结构转移膜的制造方法及微结构转移 膜， 其步骤包括：
[0007] 步骤 a.将不相容的两种热塑性聚合物原料经双层共挤压押出， 由 T形模头挤出 形成一双层挤出物， 一边形成一基材层， 另一边依附一转移层；
[0008] 步骤 b.通过一背压轮与一表面设有微结构的版轮， 使双层挤出物挤压成膜， 并 在该转移层上形成一微结构面， 以及；
[0009] 步骤 c.在微结构面上蒸镀形成一金属反射层， 以制成微结构转移膜。
[0010] 较佳的实施， 其中， 该步骤 a将两种不相容的热塑性聚合物原料分别放进两台 押出机中， 经熔融押出及分流器分流后形成两层从一 T形模头挤出来， 该步骤 b 之后， 先通过一冷却轮及一卷收轮， 以冷却卷收形成一复合层半成品； 再执行 步骤 c以铝蒸镀方式将金属反射层形成于该微结构面上侧。
[0011] 其中， 该转移层为聚丙烯 (PP)及聚乙烯 （PE) 其中的一种； 而该基材层为聚丁 烯对苯二甲酸酯 (PBT)、 聚缩醛树酯 (POM)、 超交联聚合物 （HCPs) 、 聚乙烯对 苯二甲酸酯 (PET)、 聚碳酸酯 (PC)及聚酰胺 (PA)其中一种。
[0012] 其中， 该转移层为聚乙烯、 聚丙烯、 聚乙烯的共聚物、 聚丙烯的共聚物或含有 聚乙烯、 聚丙烯的混合物。
[0013] 其中， 该基材层为聚乙烯对苯二甲酸酯。 其中， 该含有聚乙烯、 聚丙烯的混合 物中聚乙烯、 聚丙烯的含量高于 50%。 其中， 该含有聚乙烯、 聚丙烯的混合物中 进一步包括微量添加物， 该微量添加物为滑剂或爽滑剂。
[0014] 而本发明的制品为一种微结构转移膜， 主要包括： 一基材层、 一转移层、 一微 结构面及一金属反射层， 其中， 该基材层及该转移层为两种不相容热塑性聚合 物， 由双层共挤压押出所构成， 该微结构面以背压轮与表面设有微结构的版轮 挤压而形成于转移层上， 以及； 该金属反射层以蒸镀形成在微结构面上。 且， 其中， 该金属反射层上进一步设有一热熔胶层。
发明的有益效果
有益效果 [0015] 借此， 使微结构转移膜制造上更为简单快速， 可大幅降低成本缩减制程节省空 间， 应用上基材层撕离后又能保持平整以供回收再利用。
对附图的简要说明
附图说明
[0016] 图 1为本发明的微结构转移膜制造方法的流程图。
[0017] 图 2为本发明的微结构转移膜制造方法的生产示意图。
[0018] 图 3为本发明的微结构转移膜制品的剖面图。
[0019] 图 4为本发明的微结构转移膜制品的应用示意图。
[0020] 图 5为本发明的微结构转移膜制品的应用剖面图。
[0021] 图 6为现有的微结构转移膜制造方法的生产示意图。
[0022] 图 7为现有的微结构转移膜制品的应用剖面图。
[0023] 附图标记说明
[0024] 11...押出机
[0025] 12...押出机
[0026] 13...T形模头
[0027] 14...背压轮
[0028] 15…版轮
[0029] 151...微结构
[0030] 16...冷却轮
[0031] 17...卷收轮
[0032] 20...微结构转移膜
[0033] 21...基材层
[0034] 210...热塑性聚合物
[0035] 22...转移层
[0036] 220...热塑性聚合物
[0037] 23...微结构面
[0038] 24...金属反射层
[0039] 31...热熔胶层 [0040] 4...纸盒
[0041] 90... ,微结构转移膜
[0042] 910. ..基材层
[0043] 920. ..转移层
[0044] 930. ..微结构面
[0045] 940. ..金属反射层
[0046] 951. ..热熔胶层
[0047] Rl .. .滚筒
[0048] R2.. .储料盘
[0049] R3.. .涂布头
[0050] R4.. .支持轮
[0051] R5.. .滚轮组
[0052] R6.. .微结构版轮
[0053] R7.. .紫外线照射单元
[0054] S101 、 S102、 S103...步骤。
实施该发明的最佳实施例
本发明的最佳实施方式
[0055] 为使贵审査员能进一步了解本发明方法的组成、 特征及其达到的功效， 现以附 图及较佳具体实施例详细说明如后。 请参照图 1-3所示， 本发明的微结构转移膜 2 0的制造方法， 主要步骤包括：
[0056] 步骤 a.将不相容的两种热塑性聚合物 210、 220原料经双层共挤压押出， 由 T形 模头 13挤出形成一双层挤出物， 一边形成一基材层 21 , 另一边依附一转移层 22
[0057] 步骤 b.通过一背压轮 14与一表面设有微结构 151的版轮 15 , 使双层挤出物挤压成 膜， 并在该转移层 22上形成一微结构面 23， 以及；
[0058] 步骤 c.在微结构面 23上蒸镀形成一金属反射层 24， 以制成微结构转移膜 20;
[0059] 更具体而言， 如图 2所示， 其中， 实施吋步骤 a.可将两种不相容的热塑性聚合物
210、 220原料分别放进两台押出机 11、 12中， 经熔融押出及分流器分流后形成 两层从 T形模头 13挤出来， 使其遇版轮 15而冷却， 因背压轮 14的挤压而成膜， 使 一边形成一基材层 21， 另一边依附一转移层 22; 且在转移层 22上形成微结构面 2 3， 该步骤 b之后， 可先通过一冷却轮 16及一卷收轮 17， 以冷却卷收形成一复合 层半成品， 但实际制造上并不以此为限， 当然也可采用其他的冷却或卷收方式 来达成。 再执行步骤 c; 再通过蒸镀机 (图未示出)于转移层 22的微结构面 23上蒸 镀该金属反射层 24， 通常为一铝金属薄膜， 即如图 3所示， 形成一微结构转移模 20。
[0060] 借此， 使微结构转移膜 20制造上更为简单快速， 可大幅降低成本缩减制程节省 空间。
[0061] 如图 3所示， 根据本发明方法所生产制成的微结构转移膜 20， 主要包括： 基材 层 21、 转移层 22、 微结构面 23及金属反射层 24， 其中， 该基材层 21及该转移层 2 2为两种不相容热塑性聚合物 210、 220， 由双层共挤压押出所构成， 该微结构面 23以背压轮 14与表面设有微结构 151的版轮 15挤压而形成于转移层 22上， 以及； 该金属反射层 24以蒸镀形成在微结构面 23上。
[0062] 组成的微结构转移膜 20， 该转移层 22位于该基材层 21的上侧， 该微结构面 23以 压花方式形成于该转移层 22之上。 该金属反射层 24以蒸镀方式形成于该微结构 面 23之上。 其中， 金属反射层 24的蒸镀材料， 例如但不限于为铝。
[0063] 如图 2所示， 而该转移层 22所采用的热塑性聚合物 220， 例如但不限于为聚乙烯 、 聚丙烯、 聚乙烯的共聚物、 聚丙烯的共聚物或含有聚乙烯、 聚丙烯的混合物 ， 其成本每公斤约人民币 10元〜 20元， 相较于上述现有的制品的 UV胶转移层每 公斤约人民币 60元〜 100元， 确实可达到大幅降低该微结构转移膜 20的制造成本
[0064] 较佳实施， 其中， 该含有聚乙烯、 聚丙烯的混合物的含量例如但不限于为高于 50% , 且该含有聚乙烯、 聚丙烯的混合物中进一步包括微量添加物， 该微量添加 物例如但不限于为滑剂或爽滑剂。
[0065] 比如： 其中， 若转移层 22为聚丙烯 (PP)， 则基材层 21可选用与聚丙烯 (PP)不兼 容的热塑性聚合物 210， 因而在成膜后转移层 22与基材层 21之间彼此不会相粘， 仅呈暂吋贴合状态， 只要施以适当外力即可令其快速分幵。 [0066] 较佳实施， 当转移层 22为聚丙烯 (PP)或聚乙烯 （PE) 吋， 基材层 21可为聚丁烯 对苯二甲酸酯 (PBT)、 聚缩醛树酯 (POM)、 超交联聚合物 （HCPs) 、 聚乙烯对苯 二甲酸酯 (PET)、 聚碳酸酯 (PC)及聚酰胺 (PA、 尼龙)等其中一种。
[0067] 请参见图 2-5所示， 本发明的方法的制品微结构转移模 20， 因其转移层 22与基 材层 21为不相容的两种热塑性聚合物 210、 220所制成， 其彼此间不会相粘， 仅 呈暂吋贴合状态， 只要施以适当外力即可令其快速分幵。 实际应用其金属反射 层 24上设一热熔胶层 31， 当转移贴到纸盒 4面上吋， 其基材层 21撕离后， 整个基 材层 21仍能保持平整以供回收再利用， 是本发明最大的特色。 所提供的微结构 转移模 20制造方法及微结构转移模 20确实具有进步性， 能成功有效克服现有的 制法及其成品应用上的缺陷。
工业实用性
[0068] 综上所述， 本发明新颖实用与现有技术相较又具有明显的进步， 同吋也具可供 产业利用性， 完全符合发明专利申请条件， 提出发明专利申请。 但以上所述， 仅为本发明的较佳实施例而已， 不能以此限定本发明实施的范围； 因此， 凡根 据本发明权利要求书及说明书内容所作的等效变化与修饰， 皆应仍属于本发明 的保护范围内。

Claims

权利要求书
[权利要求 1] 一种微结构转移膜的制造方法， 其特征在于， 其步骤包括：
步骤 a.将不相容的两种热塑性聚合物原料经双层共挤压押出， 由 T形 模头挤出形成一双层挤出物， 一边形成一基材层， 另一边依附一转移 层；
步骤 b.通过一背压轮与一表面设有微结构的版轮， 使双层挤出物挤压 成膜， 并在该转移层上形成一微结构面， 以及；
步骤 c.在微结构面上蒸镀形成一金属反射层， 以制成微结构转移膜。
[权利要求 2] 如权利要求 1所述的微结构转移膜的制造方法， 其特征在于， 该步骤 a 将两种不兼容的热塑性聚合物原料分别放进两台押出机中， 经熔融押 出及分流器分流后形成两层， 从一 T形模头挤出来； 该步骤 b之后， 先通过一冷却轮及一卷收轮， 以冷却卷收形成一复合层半成品； 再执 行该步骤 c以铝蒸镀方式将该金属反射层形成于该微结构面上侧。
[权利要求 3] 如权利要求 1所述的微结构转移膜的制造方法， 其特征在于， 该转移 层为聚丙烯及聚乙烯其中的一种； 而该基材层为聚丁烯对苯二甲酸酯 、 聚缩醛树酯、 超交联聚合物、 聚乙烯对苯二甲酸酯、 聚碳酸酯及聚 酰胺其中一种。
[权利要求 4] 如权利要求 1所述的微结构转移膜的制造方法， 其特征在于， 该转移 层为聚乙烯、 聚丙烯、 聚乙烯的共聚物、 聚丙烯的共聚物或含有聚乙 烯、 聚丙烯的混合物。
[权利要求 5] 如权利要求 4所述的微结构转移膜的制造方法， 其特征在于， 该基材 层为聚乙烯对苯二甲酸酯。
[权利要求 6] 如权利要求 4所述的微结构转移膜的制造方法， 其特征在于， 该含有 聚乙烯、 聚丙烯的混合物中聚乙烯、 聚丙烯的含量高于 50 <¾。
[权利要求 7] 如权利要求 4所述的微结构转移膜的制造方法， 其特征在于， 该含有 聚乙烯、 聚丙烯的混合物中进一步包括微量添加物， 该微量添加物为 滑剂或爽滑剂。
[权利要求 8] —种微结构转移膜， 其特征在于， 包括： 一基材层、 一转移层、 一微 结构面及一金属反射层， 其中， 该基材层及该转移层为两种不相容热 塑性聚合物， 由双层共挤压押出所构成， 该微结构面以一背压轮与一 表面设有微结构的版轮挤压而形成于转移层上， 以及； 该金属反射层 以蒸镀形成在微结构面上。
[权利要求 9] 如权利要求 8所述的微结构转移膜， 其特征在于， 该金属反射层上进
一步设有一热熔胶层。
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