JP2002088168A - Hot melt adhesive film and package comprising the same - Google Patents
Hot melt adhesive film and package comprising the sameInfo
- Publication number
- JP2002088168A JP2002088168A JP2000281108A JP2000281108A JP2002088168A JP 2002088168 A JP2002088168 A JP 2002088168A JP 2000281108 A JP2000281108 A JP 2000281108A JP 2000281108 A JP2000281108 A JP 2000281108A JP 2002088168 A JP2002088168 A JP 2002088168A
- Authority
- JP
- Japan
- Prior art keywords
- density polyethylene
- film
- layer
- heat
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004831 Hot glue Substances 0.000 title abstract 3
- 239000000203 mixture Substances 0.000 claims abstract description 30
- 229920000092 linear low density polyethylene Polymers 0.000 claims abstract description 26
- 239000004707 linear low-density polyethylene Substances 0.000 claims abstract description 26
- 229920001155 polypropylene Polymers 0.000 claims abstract description 24
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 19
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims description 58
- 238000007789 sealing Methods 0.000 claims description 44
- 238000000034 method Methods 0.000 claims description 18
- 239000012793 heat-sealing layer Substances 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- -1 polypropylene Polymers 0.000 abstract description 17
- 239000004743 Polypropylene Substances 0.000 abstract description 13
- 230000004927 fusion Effects 0.000 abstract description 6
- 238000009835 boiling Methods 0.000 abstract description 3
- 230000001954 sterilising effect Effects 0.000 abstract 2
- 238000004659 sterilization and disinfection Methods 0.000 abstract 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 38
- 239000005977 Ethylene Substances 0.000 description 38
- 230000003014 reinforcing effect Effects 0.000 description 32
- 239000002994 raw material Substances 0.000 description 21
- 230000002787 reinforcement Effects 0.000 description 12
- 238000002156 mixing Methods 0.000 description 11
- 238000004806 packaging method and process Methods 0.000 description 9
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 7
- 239000012779 reinforcing material Substances 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229920005992 thermoplastic resin Polymers 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000004711 α-olefin Substances 0.000 description 4
- 150000001336 alkenes Chemical class 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 229920006271 aliphatic hydrocarbon resin Polymers 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 229920001179 medium density polyethylene Polymers 0.000 description 2
- 239000004701 medium-density polyethylene Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 229920001083 polybutene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 235000011962 puddings Nutrition 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 235000011888 snacks Nutrition 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000013618 yogurt Nutrition 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 206010016322 Feeling abnormal Diseases 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000013527 bean curd Nutrition 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 150000001639 boron compounds Chemical class 0.000 description 1
- IAQRGUVFOMOMEM-UHFFFAOYSA-N butene Natural products CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012775 heat-sealing material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 235000012149 noodles Nutrition 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 235000013606 potato chips Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 235000019685 rice crackers Nutrition 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Wrappers (AREA)
Abstract
Description
【０００１】[0001]
【発明の技術分野】本発明は、低密度ポリエチレン組成
物からなる易剥離性、開封時のソフト感、耐ブロッキン
グ性、衛生性、製膜加工性、ラミネート加工性に優れた
プロピレン重合体用熱融着フィルム及びそれを用いた包
装体に関する。FIELD OF THE INVENTION The present invention relates to a heat-resistant propylene polymer made of a low-density polyethylene composition, which is excellent in easy peelability, soft feeling at opening, blocking resistance, hygiene, film forming property and laminating property. The present invention relates to a fusion film and a package using the same.
【０００２】[0002]
【発明の技術的背景】せんべい、ポテトチップス等のス
ナック菓子包装、あるいはゼリー、ミルク、ヨーグル
ト、プリン、とうふ、乳酸飲料等の食品包装や、ブリス
ター包装、その他日用品や雑貨等の包装として、ボト
ル、カップ、ないしトレー状のプラスチック容器をプラ
スチックラミネートフィルムないしアルミ箔ラミネート
フィルムからなる蓋材でシールした包装が広く採用され
ている。このような包装に要求されることは、流通経路
に耐える機械的な強度、衛生性の保持ができるシール強
度および使用時における開封性の良さである。TECHNICAL BACKGROUND OF THE INVENTION Bottles and cups as snack confectionery packaging such as rice crackers and potato chips, food packaging such as jelly, milk, yogurt, pudding, tofu, lactic acid beverages, blister packaging, and other daily necessities and miscellaneous goods Packaging in which a tray-shaped plastic container is sealed with a lid made of a plastic laminated film or an aluminum foil laminated film is widely used. What is required for such packaging is mechanical strength that can withstand the distribution channel, seal strength that can maintain hygiene, and good openability during use.
【０００３】又、近年包装材のポリオレフィン化という
流れから、剛性に優れたポリプロピレンが包装材料の一
つとして多く使用されるようになっている。しかしなが
ら、一般に用いられている熱融着材であるＥＶＡ系樹脂
が提案されている（例えば、特開昭５８−４７０３８号
公報）はブロッキング性に劣り、ポリプロピレン系から
なる熱融着層と融着後剥離する際に剥離し難いという欠
点を有している。[0003] In recent years, due to the trend of polyolefin conversion of packaging materials, polypropylene having excellent rigidity has been widely used as one of packaging materials. However, an EVA-based resin, which is a commonly used heat-sealing material, has been proposed (eg, Japanese Patent Application Laid-Open No. 58-47038), but has poor blocking properties and is fused to a heat-sealing layer made of polypropylene. It has the disadvantage that it is difficult to peel off when peeling off later.
【０００４】かかるポリプロピレン包装材に適したヒー
トシーラントとしてシングルサイト触媒を用いて重合さ
れたエチレンとα−オレフィンとの共重合体のフィルム
が提案されている（特開平９−９５３５６号公報）。し
かしながら、かかる共重合体を単一で用いた場合は、熱
融着（ヒートシール）温度を高くするとともに熱融着強
度が強くなり過ぎ易剥離性が損なわれる虞がある。As a heat sealant suitable for such a polypropylene packaging material, a film of a copolymer of ethylene and an α-olefin polymerized using a single-site catalyst has been proposed (JP-A-9-95356). However, when such a copolymer is used alone, the heat-sealing (heat-sealing) temperature is increased and the heat-sealing strength becomes too strong, which may impair the easy peelability.
【０００５】[0005]
【発明が解決しようとする課題】そこで本発明者等は、
耐ブロッキング性、ソフトな開封性、衛生性、加工性に
優れ、ポリプロピレン系熱融着層と熱融着した際の熱融
着強度の温度依存性が小さく、被包装物の充填後にボイ
ル殺菌した際の熱融着強度の低下が少なく、輸送時等に
は被包装物が漏れ出る虞がない熱融着強度を有しながら
被包装物を取出す際には、容易に剥離し、剥離時にソフ
トでスタッキングがないポリプロピレン用の熱融着フィ
ルム及び包装体を得るべく、種々検討した。SUMMARY OF THE INVENTION Accordingly, the present inventors have
Excellent blocking resistance, soft opening property, hygienic property, processability, small temperature dependence of heat fusion strength when heat fusion with polypropylene heat fusion layer, sterilized by boiling after filling of package When the packaged product is taken out while having the heat-sealing strength that does not cause leakage of the packaged product during transportation, etc. Various studies were conducted to obtain a heat-sealing film and package for polypropylene having no stacking.
【０００６】[0006]
【発明の概要】本発明は、高圧法低密度ポリエチレン
（A）と直鎖状低密度ポリエチレン（B）との密度０．９
１０〜０．９３５ｇ／ｃｍ３の組成物（C）からなるこ
とを特徴とするポリプロピレン用熱融着フィルムに関す
る。又、本発明は相対する面が、高圧法低密度ポリエチ
レン（A）と直鎖状低密度ポリエチレン（B）とからなる
密度０．９１０〜０．９３５ｇ／ｃｍ３の組成物（C）
からなる熱融着フィルムとポリプロピレン（Ｄ）層から
なる熱融着層を備えたことを特徴とする包装体に関す
る。SUMMARY OF THE INVENTION The present invention relates to a high-pressure low-density polyethylene (A) and a linear low-density polyethylene (B) having a density of 0.9.
The present invention relates to a heat-sealing film for polypropylene, comprising a composition (C) having a composition of 10 to 0.935 g / cm 3 . Further, in the present invention, a composition (C) having a density of 0.910 to 0.935 g / cm 3 composed of a high-pressure low-density polyethylene (A) and a linear low-density polyethylene (B).
The present invention relates to a package having a heat-sealing layer made of a polypropylene and a heat-sealing layer made of a polypropylene (D) layer.
【０００７】[0007]
【発明の具体的説明】高圧法低密度ポリエチレン（Ａ） 本発明に係わる高圧法低密度ポリエチレン（A）は、通
常、密度が０．９１０〜０．９３５ｇ／ｃｍ３、好まし
くは０．９２０〜０．９３５ｇ／ｃｍ３、ＭＦＲ（ＡＳ
ＴＭ Ｄ１２３８ 荷重２１６０ｇ、温度１９０℃）が
通常、０．５〜１００ｇ／１０分、好ましくは１〜３０
ｇ／１０分、より好ましくは１〜１０ｇ／１０分の高圧
下で重合されるエチレンの単独重合体若しくは５重量％
以下の他のα−オレフィンあるいは酢酸ビニル等のビニ
ル化合物との共重合体である。 High-pressure low-density polyethylene (A) high-pressure low-density polyethylene according to the present invention DETAILED DESCRIPTION OF THE INVENTION (A) is usually a density of 0.910 to 0.935 g / cm 3, preferably 0.920～ 0.935 g / cm 3 , MFR (AS
TM D1238, load 2160 g, temperature 190 ° C.) is usually 0.5 to 100 g / 10 min, preferably 1 to 30 g.
g / 10 min, more preferably 1 to 10 g / 10 min.
It is a copolymer with the following other α-olefins or vinyl compounds such as vinyl acetate.
【０００８】直鎖状低密度ポリエチレン（B） 本発明に係わる直鎖状低密度ポリエチレン（B）は、通
常、密度が０．９０５〜０．９４０ｇ／ｃｍ３、好まし
くは０．９１０〜０．９３５ｇ／ｃｍ３、ＭＦＲ（ＡＳ
ＴＭ Ｄ１２３８ 荷重２１６０ｇ、温度１９０℃）が
通常、０．５〜５０ｇ／１０分、好ましくは０．５〜２
０ｇ／１０分、より好ましくは１〜１０ｇ／１０分のエ
チレンと炭素数が３〜１０のα−オレフィン、例えばプ
ロピレン、ブテン−１、ヘプテン−１、ヘキセン−１、
オクテン−１、４−メチル−ペンテン−１とのランダム
共重合体である。又、かかる直鎖状低密度ポリエチレン
（Ｂ）は、分子量分布（重量平均分子量：Ｍｗ、と数平
均分子量：Ｍｎ、との比：Ｍｗ／Ｍｎで表示）が通常
１．５〜４．０、好ましくは１．８〜３．５の範囲にあ
る。このＭｗ／Ｍｎはゲル透過クロマトグラフィー（Ｇ
ＰＣ）によって測定できる。 Linear low density polyethylene (B) The linear low density polyethylene (B) according to the present invention generally has a density of 0.905 to 0.940 g / cm 3 , preferably 0.910 to 0.90 g / cm 3 . 935 g / cm 3 , MFR (AS
TM D1238, load 2160 g, temperature 190 ° C.) is usually 0.5 to 50 g / 10 min, preferably 0.5 to 2 g.
0 g / 10 min, more preferably 1 to 10 g / 10 min of ethylene and an α-olefin having 3 to 10 carbon atoms, such as propylene, butene-1, heptene-1, hexene-1,
It is a random copolymer with octene-1,4-methyl-pentene-1. The linear low-density polyethylene (B) has a molecular weight distribution (expressed as a ratio of weight average molecular weight: Mw to number average molecular weight: Mn: Mw / Mn) of usually 1.5 to 4.0, Preferably it is in the range of 1.8 to 3.5. This Mw / Mn was determined by gel permeation chromatography (G
PC).
【０００９】又、直鎖状低密度ポリエチレン（Ｂ）は、
示差走査熱量計（ＤＳＣ）の昇温速度１０℃／分で測定
した吸熱曲線から求めた鋭いピークが１個ないし複数個
あり、該ピークの最高温度、すなわち融点が通常７０〜
１３０℃、好ましくは８０〜１２０℃の範囲にある。[0009] The linear low-density polyethylene (B) is
There is one or more sharp peaks determined from an endothermic curve measured at a heating rate of 10 ° C./min by a differential scanning calorimeter (DSC), and the maximum temperature of the peak, that is, the melting point is usually 70 to
It is in the range of 130C, preferably 80-120C.
【００１０】上記のような直鎖状低密度ポリエチレン
（B）は、シングルサイト触媒を用いた従来公知の製造
法により調整することができる。たとえば直鎖状低密度
ポリエチレン（B）は、遷移金属のメタロセン化合物を
含む触媒を用いて調整することができる。このメタロセ
ン化合物を含む触媒は、（ａ）遷移金属のメタロセン化
合物と、（ｂ）有機アルミニウムオキシ化合物と、
（ｃ）担体とから形成されることが好ましく、さらに必
要に応じて、これらの成分と（ｄ）有機アルミニウム化
合物および／または有機ホウ素化合物とから形成さてい
てもよい。The above-mentioned linear low-density polyethylene (B) can be prepared by a conventionally known production method using a single-site catalyst. For example, linear low-density polyethylene (B) can be prepared using a catalyst containing a metallocene compound of a transition metal. The catalyst containing the metallocene compound includes (a) a metallocene compound of a transition metal, (b) an organoaluminum oxy compound,
It is preferably formed from (c) a carrier, and if necessary, may be formed from these components and (d) an organic aluminum compound and / or an organic boron compound.
【００１１】なお、このようなメタロセン化合物を含む
オレフィン重合用触媒、および触媒を用いた直鎖状低密
度ポリエチレン（B）の調整方法は、たとえば特開平８
−２６９２７０号公報に記載されている。Incidentally, a catalyst for olefin polymerization containing such a metallocene compound and a method for preparing a linear low-density polyethylene (B) using the catalyst are described, for example, in Japanese Patent Application Laid-open No.
-269270.
【００１２】プロピレン重合体（D） 本発明に係わるプロピレン重合体（D）は、一般にポリ
プロピレンの名称で製造・販売されている樹脂で、通
常、密度が０．９００〜０．９２０、ＭＦＲ（ＡＳＴＭ
Ｄ１２３８ 荷重２１６０ｇ、温度２３０℃）が０．
５〜２０ｇ／１０分、好ましくは０．５〜５ｇ／１０分
のプロピレンの単独重合体若しくはプロピレンと他の少
量のα−オレフィン、例えばエチレン、ブテン、ヘキセ
ン−１等とのランダムあるいはブロック共重合体であ
る。プロピレン重合体（D）には５０重量％未満であれ
ば、上記低密度ポリエチレンを始め、中密度ポリエチレ
ン、高密度ポリエチレン、ポリブテン、エチレン・酢酸
ビニル共重合体等のオレフィン系重合体がブレンドされ
ていてもよい。 Propylene Polymer (D) The propylene polymer (D) according to the present invention is a resin generally manufactured and sold under the name of polypropylene, and usually has a density of 0.900 to 0.920, an MFR (ASTM)
D1238, load 2160 g, temperature 230 ° C).
5-20 g / 10 min, preferably 0.5-5 g / 10 min of propylene homopolymer or random or block copolymer of propylene with other small amount of α-olefin such as ethylene, butene, hexene-1 etc. It is united. If the propylene polymer (D) is less than 50% by weight, the low-density polyethylene, olefin-based polymers such as medium-density polyethylene, high-density polyethylene, polybutene and ethylene-vinyl acetate copolymer are blended. You may.
【００１３】組成物（C） 本発明に係わる組成物（C）は、前記、高圧法低密度ポ
リエチレン（A）と直鎖状低密度ポリエチレン（B）とか
らなり、組成物の密度が通常、０．９１０〜０．９３５
ｇ／ｃｍ３、好ましくは０．９１５〜０．９３０ｇ／ｃ
ｍ２で、通常、ＭＦＲ（ＡＳＴＭ Ｄ１２３８ 荷重２
１６０ｇ、温度１９０℃）が０．５〜５０ｇ／１０分、
好ましくは１〜３０ｇ／１０分、より好ましくは１〜１
０ｇ／１０分の範囲にある。 Composition (C) The composition (C) according to the present invention comprises the high-pressure low-density polyethylene (A) and the linear low-density polyethylene (B), and the density of the composition is usually 0.910-0.935
g / cm 3 , preferably 0.915 to 0.930 g / c
m2, the MFR (ASTM D1238 load 2
160 g, temperature 190 ° C.) for 0.5 to 50 g / 10 minutes,
Preferably 1 to 30 g / 10 min, more preferably 1 to 1
It is in the range of 0 g / 10 minutes.
【００１４】本発明に係わる組成物（Ｃ）における高圧
法低密度ポリエチレン（A）と直鎖状低密度ポリエチレ
ン（B）との重量比は特に限定はされないが、通常、高
圧法低密度ポリエチレン（A）が１０〜８０重量％、好
ましくは３０〜５０重量％と直鎖状低密度ポリエチレン
（B）が９０〜２０重量％、好ましくは７０〜５０重量
％の範囲にある。The weight ratio of the high-pressure low-density polyethylene (A) to the linear low-density polyethylene (B) in the composition (C) according to the present invention is not particularly limited. A) is in the range of 10 to 80% by weight, preferably 30 to 50% by weight, and linear low density polyethylene (B) is in the range of 90 to 20% by weight, preferably 70 to 50% by weight.
【００１５】又、本発明に係わる高圧法低密度ポリエチ
レン（A）、直鎖状低密度ポリエチレン（B）あるいはそ
の組成物（Ｃ）およびプロピレン重合体（D）には、本
発明の目的を損なわない範囲で、通常用いられる酸化防
止剤、耐候安定剤、帯電防止剤、防曇剤等の添加剤を必
要に応じて配合することができる。特に、アンチブロッ
キング剤、スリップ剤を配合することによって、フィル
ム成形時、ラミネート加工時、包装作業時等における加
工性や作業性を向上させることができる。The high-pressure low-density polyethylene (A), linear low-density polyethylene (B) or its composition (C) and propylene polymer (D) according to the present invention impair the object of the present invention. Additives such as antioxidants, weather stabilizers, antistatic agents, antifogging agents, etc., which are commonly used, can be added as needed. In particular, by blending an anti-blocking agent and a slip agent, workability and workability during film forming, laminating, packaging, and the like can be improved.
【００１６】熱融着フィルム 本発明に係わる熱融着フィルムは種々公知の方法で製造
できる。例えば、高圧法低密度ポリエチレン（A）と直
鎖状低密度ポリエチレン（B）とを所定の量で混合した
後、直接フィルム成形機に投入してＴ−ダイ、環状ダイ
等を用いてフィルムにする方法、予め高圧法低密度ポリ
エチレン（A）、直鎖状低密度ポリエチレン（B）とを所
定の量で混合して押出機等で溶融混練して組成物（C）
を得た後、Ｔ−ダイ、環状ダイ等を用いてフィルム成形
する方法が例示できる。熱融着フィルムは単層でも用い
られるが、補強層として上記低密度ポリエチレンを始
め、中密度ポリエチレン、高密度ポリエチレン、ポリブ
テン、エチレン・酢酸ビニル共重合体等のオレフィン系
重合体あるいは後述の熱可塑性樹脂からなる補強材との
積層フィルムを得る場合には、シール層となる熱融着フ
ィルムの原料である熱可塑性樹脂（C）と補強層に用い
る樹脂とを多層ダイを用いて共押出しフィルムとしても
良い。又、予め得られた補強材に熱可塑性樹脂組成物
（C）を押出しラミネートして積層フィルムとしても良
いし、あるいは夫々別個に得たフィルムを貼り合せて積
層フィルムとしても良い。又、蓋材として用いる場合
は、前記製法で得た熱融着層を備えた単層あるいは積層
フィルム若しくはシートをそのまま蓋材として用いても
良いし、印刷して用いても良い。更に印刷されたあるい
はされていない紙、アルミ箔等と貼り合せて蓋材にして
も良い。又、用途によっては予め容器形状に合わせてカ
ットして蓋材にしても良い。Heat Sealing Film The heat sealing film according to the present invention can be produced by various known methods. For example, after a high-pressure low-density polyethylene (A) and a linear low-density polyethylene (B) are mixed in a predetermined amount, the mixture is directly introduced into a film forming machine and formed into a film using a T-die, a ring die, or the like. The composition (C) is prepared by mixing a predetermined amount of a high-pressure low-density polyethylene (A) and a linear low-density polyethylene (B) in a predetermined amount, and melt-kneading with an extruder or the like.
And then forming a film using a T-die, an annular die, or the like. The heat-sealing film may be used as a single layer, but the above-mentioned low-density polyethylene, olefin-based polymers such as medium-density polyethylene, high-density polyethylene, polybutene, ethylene-vinyl acetate copolymer, etc. When obtaining a laminated film with a reinforcing material made of a resin, a thermoplastic resin (C), which is a raw material of a heat-sealing film to be a sealing layer, and a resin used for a reinforcing layer are co-extruded using a multilayer die as a film. Is also good. Further, the thermoplastic resin composition (C) may be extruded and laminated on a reinforcing material obtained in advance to form a laminated film, or a separately obtained film may be laminated to form a laminated film. When used as a lid, a single-layer or laminated film or sheet provided with the heat-sealing layer obtained by the above-mentioned method may be used as a lid as it is, or may be printed. Further, the cover material may be laminated with printed or unprinted paper, aluminum foil, or the like. Depending on the application, the cover material may be cut in advance according to the shape of the container.
【００１７】補強材 本発明に係わる熱融着フィルムに積層される補強材とし
ては、たとえば、ポリエチレンテレフタレートに代表さ
れるポリエステルフィルム、ポリアミドフィルム、ポリ
プロピレンフィルム等の熱可塑性樹脂製フィルム、アル
ミニューム箔、紙等が挙げられる。かかる熱可塑性樹脂
製フィルムからなる補強材は無延伸であっても一軸ある
いは二軸延伸フィルムであっても良い。勿論、補強材は
１層でも２層以上としても良い。The reinforcing material laminated on the heat sealing film according to the present invention is, for example, a thermoplastic resin film such as a polyester film represented by polyethylene terephthalate, a polyamide film, a polypropylene film, an aluminum foil, Paper etc. are mentioned. The reinforcing material made of such a thermoplastic resin film may be unstretched or a uniaxially or biaxially stretched film. Of course, the reinforcing material may be one layer or two or more layers.
【００１８】熱融着層 本発明に係わる熱融着層は、被包装材料に合わせてプロ
ピレン重合体（Ｄ）を公知の方法でフィルム、シート、
トレー、カップ、ボトル等の種々の形状とすることがで
きる。フィルム若しくはシートの場合は、上記熱融着フ
ィルムと同様な方法で製造し得る。トレー若しくはカッ
プの場合は、一旦上記方法でシートを製造した後、真空
成形、圧空成形等の熱成形によりトレー、カップ等の容
器とすることにより製造し得る。又、カップあるいはボ
トルの場合は射出成形、射出中空成形（インジェクショ
ンブロー）、中空成形等により容器として成形し得る。
更に用途によっては上記補強材と積層してもよい。又、
熱融着層に静電防止性を付与するために非帯電性アイオ
ノマー等の静電防止剤を混合しておいてもよい。 Heat Sealing Layer The heat sealing layer according to the present invention comprises a propylene polymer (D) formed by a known method according to the material to be packaged.
Various shapes such as trays, cups, bottles and the like can be used. In the case of a film or a sheet, it can be manufactured by the same method as the above-mentioned heat sealing film. In the case of a tray or a cup, the sheet can be once manufactured by the above method, and then can be manufactured by forming a container such as a tray or a cup by thermoforming such as vacuum forming or pressure forming. Further, in the case of a cup or a bottle, it can be formed as a container by injection molding, injection blow molding (injection blow), blow molding or the like.
Further, depending on the application, the above-mentioned reinforcing material may be laminated. or,
An antistatic agent such as a non-charged ionomer may be mixed in order to impart an antistatic property to the heat-fused layer.
【００１９】[0019]
【実施例】次に実施例を挙げて本発明を更に具体的に説
明するが、本発明はその要旨を越えない限りこれらの実
施例に制約されるものではない。EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples unless it exceeds the gist.
【００２０】実施例及び比較例で使用した原料は次の通
りである。 （１）エチレン重合体−１（高圧法低密度ポリエチレ
ン）： 三井化学社製（商品名；ミラソン、銘柄名；Ｍ１２Ｐ） 密度０．９２７（ｇ／ｃｍ３）、ＭＦＲ３．０（ｇ／１
０分） 融点１１４℃ （２）エチレン重合体−２（シングルサイト触媒重合直
鎖状低密度ポリエチレン）： 三井化学社製（商品名；エボリュー、銘柄名；ＳＰ１５
４０） 密度０．９１５（ｇ／ｃｍ３）、ＭＦＲ４（ｇ／１０
分）、融点１１３℃ （３）エチレン重合体−３（シングルサイト触媒重合直
鎖状低密度ポリエチレン）： 三井化学社製（商品名；エボリュー、銘柄名；ＳＰ２５
４０） 密度０．９２５（ｇ／ｃｍ３）、ＭＦＲ４（ｇ／１０
分）、融点１２０℃ （４）エチレン重合体−４（直鎖状低密度ポリエチレ
ン） 三井化学社製（商品名；ウルトゼックス、銘柄名；ＵＺ
３５２３Ｌ）密度０．９３５（ｇ／ｃｍ３）、ＭＦＲ
２．１（ｇ／１０分）、融点１２３℃ （５）エチレン・酢酸ビニル共重合体（ＥＶＡ）： 酢酸ビニル含量１０重量％ （６）エチレン・１−ブテン共重合体（ＥＢＲ）： 三井化学社製（商品名；タフマ−Ａ、銘柄：Ａ４０８
５） １−ブテン含量１０重量％、密度０．８８（ｇ／ｃ
ｍ３） ＭＦＲ４．０（ｇ／１０分） （７）脂肪族系炭化水素樹脂： 荒川化学（株）製品（商品名；アルコン） 環球法軟化点１１５℃The raw materials used in the examples and comparative examples are as follows. (1) Ethylene polymer-1 (high-pressure low-density polyethylene): manufactured by Mitsui Chemicals, Inc. (trade name: Mirason, brand name: M12P) Density 0.927 (g / cm 3 ), MFR 3.0 (g / 1)
0 minutes) Melting point 114 ° C. (2) Ethylene polymer-2 (single-site catalyzed linear low-density polyethylene): manufactured by Mitsui Chemicals, Inc. (trade name; Evolu, brand name; SP15)
40) Density 0.915 (g / cm 3 ), MFR4 (g / 10
Min), melting point 113 ° C. (3) Ethylene polymer-3 (single-site catalyzed polymerization linear low-density polyethylene): manufactured by Mitsui Chemicals, Inc. (trade name; Evolu, brand name; SP25)
40) Density 0.925 (g / cm 3 ), MFR4 (g / 10
Min), melting point 120 ° C. (4) Ethylene polymer-4 (linear low-density polyethylene) manufactured by Mitsui Chemicals, Inc. (trade name; Ultzex, brand name; UZ
3523L) Density 0.935 (g / cm 3 ), MFR
2.1 (g / 10 min), melting point 123 ° C. (5) Ethylene / vinyl acetate copolymer (EVA): vinyl acetate content 10% by weight (6) Ethylene / 1-butene copolymer (EBR): Mitsui Chemicals Company name (trade name: Toughma-A, brand: A408)
5) 1-butene content 10% by weight, density 0.88 (g / c
m 3 ) MFR 4.0 (g / 10 min) (7) Aliphatic hydrocarbon resin: Arakawa Chemical Co., Ltd. product (brand name; Alcon) Ring and ball method softening point 115 ° C
【００２１】実施例１ シール層となる熱融着フィルムの原料であるエチレン重
合体−１：４０重量％とエチレン重合体−２：６０重量
％をドライブレンドした組成物（Ｃ）と、補強層−１の
原料であるエチレン重合体−３：３０重量％とエチレン
重合体−４：７０重量％をドライブレンドした組成物
と、補強層−２の原料であるエチレン共重合体−４：１
００重量％を夫々別々の押出機に供給し、Ｔダイ法によ
ってシール層／補強層−１／補強層−２なる構成の３層
共押出フイルムを得た。フィルムの総厚は３０μｍで、
各槽の厚みはシール層：補強層：補強層＝５：１９：６
μｍであった。 Example 1 A composition (C) obtained by dry blending 40% by weight of ethylene polymer-1 and 60% by weight of ethylene polymer-2, which are raw materials for a heat-sealing film to be a seal layer, and a reinforcing layer A composition obtained by dry-blending 30% by weight of ethylene polymer-3, which is a raw material of No.-1, and 70% by weight of ethylene polymer-4, and an ethylene copolymer-4: 1, which is a raw material of a reinforcing layer-2
Each of the extruders was supplied to a separate extruder, and a three-layer co-extruded film having a structure of seal layer / reinforcement layer-1 / reinforcement layer-2 was obtained by a T-die method. The total thickness of the film is 30 μm,
The thickness of each tank is: seal layer: reinforcement layer: reinforcement layer = 5: 19: 6
μm.
【００２２】実施例２ シール層となる熱融着フィルムの原料であるエチレン重
合体−１：２０重量％とエチレン重合体−２：８０重量
％をドライブレンドした組成物（Ｃ）と、補強層−１の
原料であるエチレン重合体−３：３０重量％とエチレン
重合体−４：７０重量％をドライブレンドした組成物
と、補強層−２の原料でエチレン重合体−４：１００重
量％を夫々別々の押出機に供給し、Ｔダイ法によってシ
ール層／補強層−１／補強層−２なる構成の３層共押出
フイルムを得た。フィルムの総厚は３０μｍで、各槽の
厚みはシール層：補強層：補強層＝５：１９：６μｍで
あった。 Example 2 A composition (C) obtained by dry blending 20% by weight of ethylene polymer-1 and 80% by weight of ethylene polymer-2, which are raw materials for a heat-sealing film to be a seal layer, and a reinforcing layer A composition obtained by dry-blending 30% by weight of ethylene polymer-3 and 70% by weight of ethylene polymer-4, which are raw materials of -1, and 100% by weight of ethylene polymer-4 as a raw material of reinforcing layer-2 Each was supplied to a separate extruder, and a three-layer co-extruded film having a structure of seal layer / reinforcement layer-1 / reinforcement layer-2 was obtained by a T-die method. The total thickness of the film was 30 μm, and the thickness of each tank was sealing layer: reinforcing layer: reinforcing layer = 5: 19: 6 μm.
【００２３】実施例３ シール層となる熱融着フィルムの原料であるエチレン重
合体−１：４０重量％とエチレン重合体−３：６０重量
％をドライブレンドした組成物（Ｃ）と、補強層−１の
原料であるエチレン重合体−３：３０重量％とエチレン
重合体−４：７０重量％をドライブレンドした組成物
と、補強層−２の原料でエチレン重合体−４：１００重
量％を夫々別々の押出機に供給し、Ｔダイ法によってシ
ール層／補強層−１／補強層−２なる構成の３層共押出
フイルムを得た。フィルムの総厚は３０μｍで、各槽の
厚みはシール層：補強層：補強層＝５：１９：６μｍで
あった。 Example 3 A composition (C) obtained by dry blending 40% by weight of ethylene polymer-1 and 60% by weight of ethylene polymer-3, which are raw materials for a heat-sealing film to be a sealing layer, and a reinforcing layer A composition obtained by dry-blending 30% by weight of ethylene polymer-3 and 70% by weight of ethylene polymer-4, which are raw materials of -1, and 100% by weight of ethylene polymer-4 as a raw material of reinforcing layer-2 Each was supplied to a separate extruder, and a three-layer co-extruded film having a structure of seal layer / reinforcement layer-1 / reinforcement layer-2 was obtained by a T-die method. The total thickness of the film was 30 μm, and the thickness of each tank was sealing layer: reinforcing layer: reinforcing layer = 5: 19: 6 μm.
【００２４】実施例４ シール層となる熱融着フィルムの原料であるエチレン重
合体−１：２０重量％とエチレン重合体−３：８０重量
％をドライブレンドした組成物（Ｃ）と、補強層−１の
原料であるエチレン重合体−３：３０重量％とエチレン
重合体−４：７０重量％をドライブレンドした組成物
と、補強層−２の原料でエチレン重合体−４：１００重
量％を夫々別々の押出機に供給し、Ｔダイ法によってシ
ール層／補強層−１／補強層−２なる構成の３層共押出
フイルムを得た。フィルムの総厚は３０μｍで、各槽の
厚みはシール層：補強層：補強層＝５：１９：６μｍで
あった。 Example 4 A composition (C) obtained by dry blending 20% by weight of ethylene polymer-1 and 80% by weight of ethylene polymer-3, which are raw materials for a heat-sealing film to be a seal layer, and a reinforcing layer A composition obtained by dry-blending 30% by weight of ethylene polymer-3 and 70% by weight of ethylene polymer-4, which are raw materials of -1, and 100% by weight of ethylene polymer-4 as a raw material of reinforcing layer-2 Each was supplied to a separate extruder, and a three-layer co-extruded film having a structure of seal layer / reinforcement layer-1 / reinforcement layer-2 was obtained by a T-die method. The total thickness of the film was 30 μm, and the thickness of each tank was sealing layer: reinforcing layer: reinforcing layer = 5: 19: 6 μm.
【００２５】比較例１ シール層となる熱融着フィルムの原料であるエチレン重
合体−２：１００重量％と、補強層−１の原料であるエ
チレン重合体−３：３０重量％とエチレン重合体−４：
７０重量％をドライブレンドした組成物と、補強層−２
の原料でエチレン重合体−４：１００重量％を夫々別々
の押出機に供給し、Ｔダイ法によってシール層／補強層
−１／補強層−２なる構成の３層共押出フイルムを得
た。フィルムの総厚は３０μｍで、各槽の厚みはシール
層：補強層：補強層＝５：１９：６μｍであった。COMPARATIVE EXAMPLE 1 100% by weight of ethylene polymer-2 as a raw material of a heat-sealing film to be a seal layer, and 30% by weight of ethylene polymer-3 as a raw material of a reinforcing layer-1 and an ethylene polymer -4:
70% by weight dry-blended composition and reinforcing layer-2
Was fed to separate extruders to obtain a three-layer co-extruded film composed of a sealing layer / a reinforcing layer-1 / a reinforcing layer-2 by a T-die method. The total thickness of the film was 30 μm, and the thickness of each tank was sealing layer: reinforcing layer: reinforcing layer = 5: 19: 6 μm.
【００２６】比較例２ シール層となる熱融着フィルムの原料であるエチレン重
合体−３：１００重量％と、補強層−１の原料であるエ
チレン重合体−３：３０重量％とエチレン重合体−４：
７０重量％をドライブレンドした組成物と、補強層−２
の原料でエチレン重合体−４：１００重量％を夫々別々
の押出機に供給し、Ｔダイ法によってシール層／補強層
−１／補強層−２なる構成の３層共押出フイルムを得
た。フィルムの総厚は３０μｍで、各槽の厚みはシール
層：補強層：補強層＝５：１９：６μｍであった。 Comparative Example 2 Ethylene polymer-3: 100% by weight as a raw material of a heat-sealing film to be a seal layer, Ethylene polymer-3: 30% by weight as a raw material of a reinforcing layer-1, and an ethylene polymer -4:
70% by weight dry-blended composition and reinforcing layer-2
Was fed to separate extruders to obtain a three-layer co-extruded film composed of a sealing layer / a reinforcing layer-1 / a reinforcing layer-2 by a T-die method. The total thickness of the film was 30 μm, and the thickness of each tank was sealing layer: reinforcing layer: reinforcing layer = 5: 19: 6 μm.
【００２７】参考例 シール層となる熱融着フィルムの原料であるエチレン・
酢酸ビニル共重合体（ＥＶＡ）：４０重量％とエチレン
・１−ブテン共重合体（ＥＢＲ）：４０重量％と脂肪族
系炭化水素樹脂２０重量％をドライブレンドした組成物
と、補強層−１の原料であるエチレン重合体−３：３０
重量％とエチレン重合体−４：７０重量％をドライブレ
ンドした組成物と、補強層−２の原料でエチレン重合体
−４：１００重量％の組成物を夫々別々の押出機に供給
し、Ｔダイ法によってシール層／補強層−１／補強層−
２なる構成の３層共押出フイルムを得た。フィルムの総
厚は３０μｍで、各槽の厚みはシール層：補強層：補強
層＝５：１９：６μｍであった。 REFERENCE EXAMPLE Ethylene, which is a raw material of a heat-sealing film serving as a seal layer,
A composition obtained by dry-blending 40% by weight of vinyl acetate copolymer (EVA), 40% by weight of ethylene / 1-butene copolymer (EBR) and 20% by weight of aliphatic hydrocarbon resin, and reinforcing layer-1 Ethylene polymer which is a raw material of -3: 30
% Of ethylene polymer-4 and 70% by weight of ethylene polymer-4 and a composition of 100% by weight ethylene polymer-4 as a raw material of the reinforcing layer-2 were supplied to separate extruders. Sealing layer / reinforcement layer-1 / reinforcement layer by die method
Thus, a three-layer co-extruded film having two structures was obtained. The total thickness of the film was 30 μm, and the thickness of each tank was sealing layer: reinforcing layer: reinforcing layer = 5: 19: 6 μm.
【００２８】各実施例、比較例及び参考例で得られたフ
ィルムの特性値は以下の方法で測定した。 （１）ヒ−トシ−ル性：延伸された厚さ１２μｍのポリ
エチレンテレフタレ−トフィルム（ＰＥＴ）と、各実施
例および比較例等で得られたフィルムの補強層−２面を
ウレタン系接着剤を用いてドライラミネ−ションにより
積層して、易開封性包装体の材料を製造した。熱融着層
として用いたプロピレン重合体の基材は、東セロ社製の
ポリプロピレンシ−ト（商品名：Ｔ−Ｔ＃３００）を用
いた。 （２）ヒートシール性 ： １）シール層面と熱融着層のシ−ル面を重ね合せ、表記
載の温度、幅５ｍｍのシールバーにより、０．２ＭＰａ
の圧力で１秒間シールした後放冷した。これから１５ｍ
ｍ幅の試験片を切り取りクロスヘッド速度５００ｍｍ／
ｍｉｎでヒートシール部を剥離し、その強度をヒートシ
ール強度とした。耐熱水処理後の適正は上記方法でヒー
トシールした試験片を９０℃の熱水中で３０分間放置し
た冷却したのち自然乾燥し、上記方法でヒートシール強
度を測定した。 ２）剥離強度が５〜１５Ｎ／１５ｍｍ程度の範囲に有る
物を◎、剥離強度が２０Ｎ／１５ｍｍ以上の強い強度の
物を△で表した。 ３）開封時のピ−ル感を観察し、ソフトなピ−ル性のも
のを◎、ピリピリ感の有る（スタッキング性の有る）ピ
−ル性のものを△、より完全シールに近い強いピ−ル性
のものを×で表した。 （３）熱融着面のブロッキングが（ラミ加工時のラミロ
−ルのブロッキング性）しないものを◎、１．５Ｎ／１
５ｃｍ２とバリバリと音がするレベルにあるものを×で
表した。 （４） イ−ジ−ピ−ル性フィルムとしての機能性とし
て総合適性は、対被着体との剥離強度が５〜１５Ｎ／１
５ｍｍ程度、綺麗な界面剥離でソフトな感触で剥離可能
な物で、尚かつフィルム・ラミネ−ト加工時或いは実包
作業時においてブロッキングのしないフィルムが好適で
ある。従って、総合適性の判定は◎：最適、○：適、
△：不十分、×：不適とした。The characteristic values of the films obtained in the respective Examples, Comparative Examples and Reference Examples were measured by the following methods. (1) Heat sealability: A stretched polyethylene terephthalate film (PET) having a thickness of 12 μm and a reinforcing layer-2 surface of the film obtained in each of Examples and Comparative Examples were used as a urethane-based adhesive. Were laminated by dry lamination to produce a material for an easily-openable package. As a substrate of the propylene polymer used as the heat sealing layer, a polypropylene sheet (trade name: TT # 300) manufactured by Tosero Corporation was used. (2) Heat sealing property: 1) The sealing layer face and the sealing face of the heat-sealing layer are overlapped with each other, and the pressure is 0.2 MPa using a seal bar having a temperature and a width of 5 mm as shown in the table.
After sealing at a pressure of 1 second, the mixture was allowed to cool. 15m from now
m width of test piece, crosshead speed 500mm /
In minutes, the heat seal portion was peeled off, and the strength was defined as the heat seal strength. Suitably after the heat-resistant water treatment, the test piece heat-sealed by the above method was left standing in hot water at 90 ° C. for 30 minutes, cooled, then naturally dried, and the heat-sealing strength was measured by the above method. 2) Those having a peel strength in the range of about 5 to 15 N / 15 mm were represented by ◎, and those having a peel strength of at least 20 N / 15 mm were represented by Δ. 3) Observe the peeling feeling at the time of opening, 、 the soft peeling property, △ the peeling (stacking property) peeling property, and △ the strong peeling closer to complete sealing. -Indicates that the property was negative. (3) を, 1.5 N / 1, in which the heat-sealed surface does not block (the lami-roll blocking property during laminating).
Those having a level of 5 cm 2 and a crisp sound were represented by x. (4) The overall suitability of the function as an easy peel film is that the peel strength with respect to the adherend is 5 to 15 N / 1.
A film of about 5 mm that can be peeled off with a soft touch with a clean interface peeling and that does not block during film lamination or actual packaging operation is preferable. Therefore, the overall suitability was evaluated as ◎: optimal, ○: appropriate,
Δ: insufficient, x: unsuitable.
【００２９】[0029]
【表１】 [Table 1]
【００３０】[0030]
【発明の効果】本発明に係わる易開封性包装体は、高圧
法低密度ポリエチレンと直鎖状低密度ポリエチレンとの
組成物とが特定の割合で混合された熱可塑性樹脂組成物
となっているので、低温ヒ−トシ−ル性があり、ヒ−ト
シ−ル温度幅も広く、ボイル処理等によるヒ−ト−シル
強度の変化も少なく、適度なヒートシール強度を有して
おり、又開封時にはソフトに容易に開封できてるという
特性を有している。また、フィルムのブロキング性にも
優れているので加工時の粉振り加工が不要で、ラミネー
ト品のエ−ジング温度を一般のフィルム並以下に低くす
ることも必要なく、或いはユ−ザ−等で使用する場合も
問題が無く使える。このようなことにより、広く各種の
ヨ−グルト、プリン、ゼリ−、スナック、麺などの紙ポ
リ容器の食品包装やブリスタ−包装、その他日用品や雑
貨等の袋物包装、ボトル、カップ、ないしトレ−のプラ
スチックス容器などのシ−ル材等の包装体として好適に
利用することができる。The easily openable package according to the present invention is a thermoplastic resin composition in which a high-pressure low-density polyethylene and a linear low-density polyethylene composition are mixed at a specific ratio. Therefore, it has low-temperature heat-sealing properties, a wide heat-sealing temperature range, little change in heat-sil strength due to boil treatment, etc., and has an appropriate heat-sealing strength. Sometimes it has the property that it can be easily opened by software. In addition, since the film has excellent blocking properties, it is not necessary to shake the powder during processing, and it is not necessary to lower the aging temperature of the laminated product to a level lower than that of a general film. It can be used without any problems when used. As a result, food packaging and blister packaging of paper and plastic containers such as various types of yogurt, pudding, jelly, snacks, noodles, etc. It can be suitably used as a package of a sealing material such as a plastic container.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3E086 AB02 BA02 BA15 BB51 BB90 CA01 CA35 4F071 AA18 AA18X AA19 AA28X AA82 AH04 BA01 BB06 BB07 BC01 4F100 AK02 AK06A AK07B AK63A AK65 AK68 AL05A BA02 EH20 EH202 GB15 JA13A JC00 JL01 YY00A 4J002 BB02W BB03W BB03X BB05X BB06W BB15X GF00 GG02 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) BB03X BB05X BB06W BB15X GF00 GG02
Claims (6)
低密度ポリエチレン（B）との密度０．９１０〜０．９
３５ｇ／ｃｍ３の組成物（C）からなることを特徴とす
るプロピレン重合体用熱融着フィルム。1. A density of a high-pressure low-density polyethylene (A) and a linear low-density polyethylene (B) of 0.910 to 0.9.
A heat-sealing film for a propylene polymer, comprising the composition (C) at 35 g / cm 3 .
０重量％と直鎖状低密度ポリエチレン（B）２０〜９０
重量％との組成物から得られ得る、密度０．９１０〜
０．９３５ｇ／ｃｍ３のプロピレン重合体用熱融着フィ
ルム。2. High pressure method low density polyethylene (A) 10-8
0% by weight and linear low density polyethylene (B) 20 to 90
Wt.%, Obtainable from a composition with a density of 0.910
0.935 g / cm 3 heat-sealing film for propylene polymer.
ルサイト触媒により得られ得る請求項１若しくは２に記
載の熱融着フィルム。3. The heat-sealing film according to claim 1, wherein the linear low-density polyethylene (B) can be obtained by a single-site catalyst.
（A）と直鎖状低密度ポリエチレン（B）との密度０．９
１０〜０．９３５ｇ／ｃｍ３の組成物（C）からなる熱
融着フィルムとプロピレン重合体（Ｄ）層からなる熱融
着層を備えたことを特徴とする包装体。4. An opposite surface having a density of 0.9 between a high-pressure low-density polyethylene (A) and a linear low-density polyethylene (B).
A package comprising a heat-sealing film made of the composition (C) of 10 to 0.935 g / cm 3 and a heat-sealed layer made of a propylene polymer (D) layer.
ン（A）１０〜８０重量％と直鎖状低密度ポリエチレン
（B）９０〜２０重量％との組成物（C）から得られ得る
密度０．９１０〜０．９３５ｇ／ｃｍ３の熱融着フィル
ムとプロピレン重合体（Ｄ）層からなる熱融着層を備え
たことを特徴とする包装体。5. The opposite surface can be obtained from a composition (C) of 10 to 80% by weight of a high-pressure low-density polyethylene (A) and 90 to 20% by weight of a linear low-density polyethylene (B). A package comprising a heat-sealing film having a density of 0.910 to 0.935 g / cm 3 and a heat-sealing layer comprising a propylene polymer (D) layer.
ルサイト触媒により得られ得る請求項４若しくは５に記
載の包装体。6. The package according to claim 4, wherein the linear low-density polyethylene (B) can be obtained by a single-site catalyst.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000281108A JP5159003B2 (en) | 2000-09-18 | 2000-09-18 | Thermal fusion film and package comprising the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000281108A JP5159003B2 (en) | 2000-09-18 | 2000-09-18 | Thermal fusion film and package comprising the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002088168A true JP2002088168A (en) | 2002-03-27 |
| JP5159003B2 JP5159003B2 (en) | 2013-03-06 |
Family
ID=18765816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000281108A Expired - Lifetime JP5159003B2 (en) | 2000-09-18 | 2000-09-18 | Thermal fusion film and package comprising the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5159003B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003266616A (en) * | 2002-03-20 | 2003-09-24 | Japan Polychem Corp | Coextrusion laminate and coextrusion laminated molded object utilizing the same |
| JP2007253993A (en) * | 2006-03-23 | 2007-10-04 | Japan Polypropylene Corp | Easily peelable heat seal article and method for producing the same |
| JP2009114313A (en) * | 2007-11-06 | 2009-05-28 | Nippon Polyethylene Kk | Polyethylene resin composition, film for print lamination using the same, and print laminate product |
| JP2017193722A (en) * | 2017-07-24 | 2017-10-26 | 大日本印刷株式会社 | Polyolefin resin film |
| CN115122740A (en) * | 2022-07-28 | 2022-09-30 | 上海佰鑫新材料科技有限公司 | Barrier hot-melt adhesive film and preparation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0995356A (en) * | 1995-09-28 | 1997-04-08 | Dainippon Printing Co Ltd | Easy-open packaging |
| JPH09124856A (en) * | 1995-11-02 | 1997-05-13 | Nippon Poriorefuin Kk | Resin composition for extrusion lamination |
| JPH09248884A (en) * | 1996-03-15 | 1997-09-22 | Dainippon Printing Co Ltd | Multilayer film |
| JPH1036581A (en) * | 1996-04-30 | 1998-02-10 | Ube Ind Ltd | Polyethylene composition for heavy packaging bags |
| JPH10168249A (en) * | 1992-12-03 | 1998-06-23 | Mitsubishi Chem Corp | the film |
| JPH10166520A (en) * | 1996-12-12 | 1998-06-23 | Sumitomo Bakelite Co Ltd | Multilayered sheet |
| JPH11140240A (en) * | 1997-11-04 | 1999-05-25 | Asahi Chem Ind Co Ltd | Polyethylene-based resin composition for heavy duty packaging and polyethylene-based film for heavy duty packaging |
| JP2000026669A (en) * | 1998-07-10 | 2000-01-25 | Nippon Polyolefin Kk | Resin composition, film comprising the resin composition, and method for producing the film |
| JP2000198171A (en) * | 1998-10-28 | 2000-07-18 | Mitsui Chemicals Inc | Laminate |
-
2000
- 2000-09-18 JP JP2000281108A patent/JP5159003B2/en not_active Expired - Lifetime
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10168249A (en) * | 1992-12-03 | 1998-06-23 | Mitsubishi Chem Corp | the film |
| JPH0995356A (en) * | 1995-09-28 | 1997-04-08 | Dainippon Printing Co Ltd | Easy-open packaging |
| JPH09124856A (en) * | 1995-11-02 | 1997-05-13 | Nippon Poriorefuin Kk | Resin composition for extrusion lamination |
| JPH09248884A (en) * | 1996-03-15 | 1997-09-22 | Dainippon Printing Co Ltd | Multilayer film |
| JPH1036581A (en) * | 1996-04-30 | 1998-02-10 | Ube Ind Ltd | Polyethylene composition for heavy packaging bags |
| JPH10166520A (en) * | 1996-12-12 | 1998-06-23 | Sumitomo Bakelite Co Ltd | Multilayered sheet |
| JPH11140240A (en) * | 1997-11-04 | 1999-05-25 | Asahi Chem Ind Co Ltd | Polyethylene-based resin composition for heavy duty packaging and polyethylene-based film for heavy duty packaging |
| JP2000026669A (en) * | 1998-07-10 | 2000-01-25 | Nippon Polyolefin Kk | Resin composition, film comprising the resin composition, and method for producing the film |
| JP2000198171A (en) * | 1998-10-28 | 2000-07-18 | Mitsui Chemicals Inc | Laminate |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003266616A (en) * | 2002-03-20 | 2003-09-24 | Japan Polychem Corp | Coextrusion laminate and coextrusion laminated molded object utilizing the same |
| JP2007253993A (en) * | 2006-03-23 | 2007-10-04 | Japan Polypropylene Corp | Easily peelable heat seal article and method for producing the same |
| JP2009114313A (en) * | 2007-11-06 | 2009-05-28 | Nippon Polyethylene Kk | Polyethylene resin composition, film for print lamination using the same, and print laminate product |
| JP2017193722A (en) * | 2017-07-24 | 2017-10-26 | 大日本印刷株式会社 | Polyolefin resin film |
| CN115122740A (en) * | 2022-07-28 | 2022-09-30 | 上海佰鑫新材料科技有限公司 | Barrier hot-melt adhesive film and preparation method thereof |
| CN115122740B (en) * | 2022-07-28 | 2024-03-26 | 上海佰鑫新材料科技有限公司 | Barrier hot melt adhesive film and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5159003B2 (en) | 2013-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7651779B2 (en) | Resin composition having easy-openable property | |
| KR100763501B1 (en) | Sealant Resin Compositions, Sealant Films and Their Uses | |
| JP5968543B2 (en) | Easy-open laminated film and use thereof | |
| WO2009123286A1 (en) | Heat-fusible multilayered film | |
| JP4731699B2 (en) | Thermal fusion film and package comprising the same | |
| JP5855005B2 (en) | Easy peelable laminated film and its use | |
| JP5159003B2 (en) | Thermal fusion film and package comprising the same | |
| JP5959737B2 (en) | Easy peelable laminated film and package comprising the same | |
| JP4553545B2 (en) | Easy peelable laminated film and package comprising the same | |
| JP2002210899A (en) | Multi-layer polyolefin film and package | |
| JP2004035711A (en) | Heat sealable film and laminate using the same | |
| JP4870285B2 (en) | Polyolefin film for packaging and packaging | |
| JP4864235B2 (en) | Thermal fusion film and package comprising the same | |
| JP6822198B2 (en) | Sealant adhesive and easy-to-peel film | |
| JP7671176B2 (en) | Resin composition and its uses | |
| JP4520605B2 (en) | Easy-open packaging | |
| JP4190950B2 (en) | Resin composition for sealant, sealant film and use thereof | |
| JP2024176423A (en) | Sealant film, laminate, packaging body, lid material, container, and food packaging body | |
| JP2003096214A (en) | Easily openable sealant film | |
| JP2024137181A (en) | Resin composition, film, laminated film and packaging material | |
| JP2003096213A (en) | Easily openable sealant film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070809 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20100419 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100511 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100708 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20100708 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20100831 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20101008 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20101102 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20110131 |
|
| A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20110209 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20121211 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 5159003 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20151221 Year of fee payment: 3 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |