JPH0532282Y2 - - Google Patents
Info
- Publication number
- JPH0532282Y2 JPH0532282Y2 JP8568988U JP8568988U JPH0532282Y2 JP H0532282 Y2 JPH0532282 Y2 JP H0532282Y2 JP 8568988 U JP8568988 U JP 8568988U JP 8568988 U JP8568988 U JP 8568988U JP H0532282 Y2 JPH0532282 Y2 JP H0532282Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- resin
- copolymer
- gas barrier
- polyester elastomer
- 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.)
- Expired - Lifetime
Links
- 239000010410 layer Substances 0.000 claims description 37
- 229920005989 resin Polymers 0.000 claims description 28
- 239000011347 resin Substances 0.000 claims description 28
- 230000004888 barrier function Effects 0.000 claims description 16
- 229920001577 copolymer Polymers 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 15
- 239000000806 elastomer Substances 0.000 claims description 15
- 229920000728 polyester Polymers 0.000 claims description 15
- 229920005672 polyolefin resin Polymers 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 3
- 230000001954 sterilising effect Effects 0.000 description 12
- 238000004659 sterilization and disinfection Methods 0.000 description 12
- -1 polypropylene Polymers 0.000 description 11
- 239000004743 Polypropylene Substances 0.000 description 8
- 239000010408 film Substances 0.000 description 8
- 229920001155 polypropylene Polymers 0.000 description 8
- 230000002087 whitening effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000005033 polyvinylidene chloride Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000004230 Fast Yellow AB Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 235000015872 dietary supplement Nutrition 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
《産業上の利用分野》
本考案は柔軟性、透明性、ガス遮断性に優れ、
且つ加熱殺菌処理に耐え得る耐熱性及び耐白化性
さらに加熱殺菌処理後もガス遮断性の低下が起こ
らない積層体に関するものである。[Detailed description of the invention] <Industrial application field> The invention has excellent flexibility, transparency, and gas barrier properties.
The present invention also relates to a laminate that has heat resistance and whitening resistance that can withstand heat sterilization treatment, and does not exhibit a decrease in gas barrier properties even after heat sterilization treatment.
《従来の技術》
食品や医薬品の変質、腐敗の原因となる微生物
を完全に死滅、除去するために従来からレトルト
加熱殺菌処理やオートクレーブ加熱殺菌処理が行
われている。この用途に使用される包装材料は主
にAl箔を主構成とする多層フイルムである。し
かしAl箔は不透明であり、加熱処理後の内容物
の変化を検査することができなかつた。又柔軟性
があり耐熱性や透明性に優れた材料として軟質塩
化ビニルがあるが、衛生性及び耐白化性に問題が
あり、使用に耐える材料は得られていない。さら
にポリプロピレン系材料も種々検討されている
が、柔軟性、耐熱性、耐白化性の点で充分満足で
きるものはなかつた。<Prior Art> Retort heat sterilization treatment and autoclave heat sterilization treatment have traditionally been used to completely kill and remove microorganisms that cause deterioration and spoilage of foods and medicines. The packaging material used for this purpose is mainly a multilayer film mainly composed of Al foil. However, the Al foil was opaque and it was not possible to inspect changes in the contents after heat treatment. Also, soft vinyl chloride is a material that is flexible and has excellent heat resistance and transparency, but it has problems with hygiene and whitening resistance, and no material that can withstand use has been obtained. Furthermore, various polypropylene materials have been studied, but none have been found to be fully satisfactory in terms of flexibility, heat resistance, and whitening resistance.
さらに先記の材料はガスバリア性に劣るためそ
の点においても単体では満足に使用できるもので
はなかつた。積層フイルムではポリエステルフイ
ルムやポリプロピレンフイルムとガス遮断性フイ
ルムを組み合わせたものが市販されているが、柔
軟性が全くなく用途が限定されていた。 Furthermore, since the above-mentioned materials have poor gas barrier properties, they cannot be used satisfactorily on their own. Laminated films that combine polyester films or polypropylene films with gas barrier films are commercially available, but they lack flexibility and have limited uses.
《考案が解決しようとする課題》
本考案は従来の耐熱包装材料では得られなかつ
た柔軟性及び透明性に優れ、且つガス遮断性、加
熱殺菌処理に耐える耐熱性及び耐白化性さらに安
定したガス遮断性を保持した包装材料を提供する
にある。[Problems to be solved by the invention] This invention has excellent flexibility and transparency that cannot be obtained with conventional heat-resistant packaging materials, as well as gas barrier properties, heat resistance and whitening resistance that can withstand heat sterilization treatment, and stable gas An object of the present invention is to provide a packaging material that maintains barrier properties.
《課題を解決するための手段》
本考案はポリエステル系エラストマー樹脂層、
ガス遮断層、ポリオレフイン系樹脂及び／又はそ
の共重合体からなるシール層さらに接着層で少な
くとも構成され、ポリエステル系エラストマー樹
脂層とガス遮断層の間にポリオレフイン系樹脂及
び／又はその共重合体及び／又はそれらをベース
樹脂とする酸変性樹脂の少なくとも１層以上が介
在することを特徴とする積層体である。《Means for solving the problem》 The present invention uses a polyester elastomer resin layer,
It is composed of at least a gas barrier layer, a sealing layer made of a polyolefin resin and/or a copolymer thereof, and an adhesive layer, and a polyolefin resin and/or a copolymer thereof and/or a polyolefin resin and/or a copolymer thereof are provided between the polyester elastomer resin layer and the gas barrier layer. Alternatively, it is a laminate characterized in that at least one layer of acid-modified resin using these as a base resin is interposed.
本考案において用いられるポリエステル系エラ
ストマー樹脂は曲げ弾性率が500〜4000Kgｆ／cm2
のものであり好ましくは、500〜2500Kgｆ／cm2の
ものである。 The polyester elastomer resin used in this invention has a flexural modulus of 500 to 4000 Kgf/cm 2
It is preferably 500 to 2,500 Kgf/cm 2 .
又、ガス遮断層としてエチレン・酢酸ビニル共
重合体ケン化物、ポリアミド樹脂やポリ塩化ビニ
リデン共重合体さらには、金属薄膜をコートした
フイルム等が使用できる。 Further, as the gas barrier layer, saponified ethylene/vinyl acetate copolymer, polyamide resin, polyvinylidene chloride copolymer, or a film coated with a metal thin film can be used.
100℃以上の加熱殺菌処理の場合は吸湿の影響
を最小限にするためにはポリ塩化ビニリデン又は
金属薄膜コートが好ましい。 In the case of heat sterilization treatment at 100°C or higher, polyvinylidene chloride or metal thin film coating is preferred in order to minimize the influence of moisture absorption.
シール層はポリオレフイン系樹脂及び／又はそ
の共重合体であるが加熱殺菌処理温度により、樹
脂を選定する必要がある。 The sealing layer is made of polyolefin resin and/or its copolymer, but the resin must be selected depending on the heat sterilization temperature.
ポリエステル系エラストマー樹脂層とガス遮断
層の間に介在するポリオレフイン系樹脂及び／又
はその共重合体としては、ポリエチレン、ポリプ
ロピレン、ポリブテン等の単独重合体やエチレ
ン・酢酸ビニル共重合体、エチレン・アクリレー
ト共重合体、エチレン・プロピレン共重合体、ア
イオノマー等の共重合体がある。介在させる樹脂
の選択は加熱殺菌処理温度によつて変える必要が
あるが、ポリエチレン、ポリプロピレン、エチレ
ン・プロピレン共重合体が好ましい。 The polyolefin resin and/or its copolymer interposed between the polyester elastomer resin layer and the gas barrier layer include homopolymers such as polyethylene, polypropylene, and polybutene, ethylene/vinyl acetate copolymers, and ethylene/acrylate copolymers. There are copolymers such as polymers, ethylene/propylene copolymers, and ionomers. Although the selection of the intervening resin needs to be changed depending on the heat sterilization treatment temperature, polyethylene, polypropylene, and ethylene/propylene copolymer are preferred.
酸変性樹脂もポリエチレン、ポリプロピレン、
エチレン・プロピレン共重合体ベースのものが好
ましい。 Acid-modified resins include polyethylene, polypropylene,
Those based on ethylene/propylene copolymer are preferred.
《作用》
第１図は本考案による積層体の一具体例の断面
図であるが、１はポリエステル系エラストマー樹
脂層であり、柔軟性、耐熱性、透明性を保持し加
熱殺菌処理において個包装した製品同士の熱融着
を防止し、且つ該樹脂層１自体は加熱殺菌処理で
白化現象を起こさず製品価値を保持できる。しか
しポリエステル系エラストマー樹脂層１は高温で
比較的水分を透過しやすく内部ガス遮断層２等へ
悪影響を及ぼす場合がある。具体的にはガス遮断
性の低下や内部層の白化現象等である。<<Function>> Fig. 1 is a cross-sectional view of a specific example of the laminate according to the present invention. 1 is a polyester elastomer resin layer, which maintains flexibility, heat resistance, and transparency, and can be individually packaged during heat sterilization treatment. The resin layer 1 itself can maintain its product value without causing any whitening phenomenon during heat sterilization treatment. However, the polyester elastomer resin layer 1 is relatively permeable to moisture at high temperatures, which may adversely affect the internal gas barrier layer 2 and the like. Specifically, these include a decrease in gas barrier properties and a whitening phenomenon of the inner layer.
本考案の積層体は、表面からポリエステル系エ
ラストマー樹脂層１を透過してきた水分を遮断す
るために、ガス遮断層２との間に樹脂層を介在さ
せたものであり、第１図ではポリオレフイン系樹
脂層４が介在し、両側にポリエステル系エラスト
マー樹脂層１及びガス遮断層２と積層するための
接着層５，６がある。 The laminate of the present invention has a resin layer interposed between the polyester elastomer resin layer 1 and the gas barrier layer 2 in order to block moisture that has passed through the polyester elastomer resin layer 1 from the surface. A resin layer 4 is interposed therebetween, and adhesive layers 5 and 6 for laminating the polyester elastomer resin layer 1 and the gas barrier layer 2 are provided on both sides.
《実施例》 本考案の実施例を示す。"Example" An example of the present invention will be shown.
実施例 １
ポリエステル系エラストマー樹脂（イーストマ
ン・ケミカル社：PCCE9966）とエチレン・ビニ
ルアルコール共重合体（クラレ：エバールEP−
E105）さらにポリプロピレン樹脂（住友化学工
業：ノーブレンFH1015）の３層の各層間の接着
層（三井石油化学工業：アドマーQF500）２層を
加えた５層を厚み150μmで共押出した。Example 1 Polyester elastomer resin (Eastman Chemical Co.: PCCE9966) and ethylene-vinyl alcohol copolymer (Kuraray: EVAL EP-
E105) Furthermore, five layers were coextruded to a thickness of 150 μm, including three layers of polypropylene resin (Sumitomo Chemical Industries: Noblen FH1015) and two adhesive layers (Mitsui Petrochemical Industries: Admer QF500) between each layer.
各層の厚みはPCCE9966 50μm／QF500
10μm／エバール20μm／QF500 10μm／FH1015
50μmであつた。 The thickness of each layer is PCCE9966 50μm/QF500
10μm/EVAL 20μm/QF500 10μm/FH1015
It was 50μm.
該フイルムをポリエステル系エラストマー樹脂
層を外面に焼ブタブロツク物の真空包装を行い、
98℃熱水中で20分ボイル殺菌処理を行つた。処理
後も透明性が全く変化せず、外観良好であつた。 The film is vacuum-packed into a baking block with a polyester elastomer resin layer on the outside,
Boil sterilization treatment was performed in hot water at 98°C for 20 minutes. Even after the treatment, the transparency did not change at all and the appearance was good.
さらに、フイルム単体を上記条件でボイル処理
しO2ガス透過量の変化を調べたところ下の様な
結果であつた。 Furthermore, when the film itself was boiled under the above conditions and the change in O 2 gas permeation amount was investigated, the results were as shown below.
処理前 2.0c.c.／m2・24H
処理後 2.1c.c.／m2・24H
実施例 ２
ポリエステル系エラストマー樹脂（東レ・デユ
ポン：ハイトレル5557）とポリ塩化ビニリデン共
重合体（ダウケミカル：サラン468）さらにポリ
プロピレン樹脂（住友化学工業：ノーブレンＳ−
131）の３層にポリエステル系エラストマー樹脂
とポリ塩化ビニリデン共重合体の間にポリプロピ
レン樹脂（住友化学工業：ノーブレンFL−
6411A）を介在させた構成で、各層間の接着層
（三井石油化学：アドマーAT469C）３層を加え
た７層を厚み400μmで共押出した。各層の厚みは
557 150μm／AT469C20μm／FL6411A30μm／
AT469C 20μm／サラン468 50μm／AT469C
30μm／Ｓ−131 100μmであつた。 Before treatment 2.0cc/m 2・24H After treatment 2.1cc/m 2・24H Example 2 Polyester elastomer resin (Toray Dupont: Hytrel 5557), polyvinylidene chloride copolymer (Dow Chemical: Saran 468), and polypropylene resin (Sumitomo Chemical: Noblen S-
131), polypropylene resin (Sumitomo Chemical: Noblen FL-
6411A), and 7 layers including 3 adhesive layers (Mitsui Petrochemicals: Admer AT469C) between each layer were coextruded to a thickness of 400 μm. The thickness of each layer is
557 150μm/AT469C20μm/FL6411A30μm/
AT469C 20μm/Saran 468 50μm/AT469C
It was 30 μm/S-131 100 μm.
該フイルムをポリエステル系エラストマー樹脂
層を外面にして輸液バツグを作成し、経口栄養剤
を注入し密封後121℃×20分間オートクレーブで
殺菌処理を行つた。処理前後の透明性等の外観変
化もほとんどなく、又保存性も良好であつた。 An infusion bag was prepared using the film with the polyester elastomer resin layer on the outside, an oral nutritional supplement was injected into the bag, and the bag was sealed and sterilized in an autoclave at 121°C for 20 minutes. There was almost no change in appearance such as transparency before and after treatment, and storage stability was also good.
《考案の効果》
本考案の積層体を使用することにより従来では
得られなかつた優れた耐熱性と柔軟性を保持し、
透明性、ガス遮断性をもつ包装が可能となり、殺
菌処理が重要な食品・医療分野に役立つものであ
る。《Effects of the invention》 By using the laminate of the invention, it maintains excellent heat resistance and flexibility that could not be obtained conventionally,
This enables packaging to be transparent and gas-barrier, making it useful in the food and medical fields where sterilization is important.
第１図は本考案による積層体の一実施例の断面
図である。
FIG. 1 is a sectional view of an embodiment of a laminate according to the present invention.
Claims (1)
層、ポリオレフイン系樹脂及び／又はその共重合
体からなるシール層さらに接着層で少なくとも構
成され、ポリエステル系エラストマー樹脂層とガ
ス遮断層の間にポリオレフイン系樹脂及び／又は
その共重合体及び／又はそれらをベース樹脂とす
る酸変性樹脂の少なくとも１層以上が介在するこ
とを特徴とする積層体。 It is composed of at least a polyester elastomer resin layer, a gas barrier layer, a sealing layer made of a polyolefin resin and/or a copolymer thereof, and an adhesive layer, and a polyolefin resin and/or a copolymer thereof is provided between the polyester elastomer resin layer and the gas barrier layer. A laminate comprising at least one layer of a copolymer thereof and/or an acid-modified resin having the copolymer as a base resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8568988U JPH0532282Y2 (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8568988U JPH0532282Y2 (en) | 1988-06-30 | 1988-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH028931U JPH028931U (en) | 1990-01-19 |
| JPH0532282Y2 true JPH0532282Y2 (en) | 1993-08-18 |
Family
ID=31310343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8568988U Expired - Lifetime JPH0532282Y2 (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0532282Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48103647U (en) * | 1972-03-11 | 1973-12-04 | ||
| JPS5072748U (en) * | 1973-11-09 | 1975-06-26 |
-
1988
- 1988-06-30 JP JP8568988U patent/JPH0532282Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH028931U (en) | 1990-01-19 |
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