JPH07186337A - Gas substituting or oxygen scavenger-containing packaging laminated film - Google Patents
Gas substituting or oxygen scavenger-containing packaging laminated filmInfo
- Publication number
- JPH07186337A JPH07186337A JP33063293A JP33063293A JPH07186337A JP H07186337 A JPH07186337 A JP H07186337A JP 33063293 A JP33063293 A JP 33063293A JP 33063293 A JP33063293 A JP 33063293A JP H07186337 A JPH07186337 A JP H07186337A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- film
- laminated film
- gas barrier
- packaging
- 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.)
- Pending
Links
- 239000007789 gas Substances 0.000 title claims abstract description 50
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 27
- 229940123973 Oxygen scavenger Drugs 0.000 title claims abstract description 7
- 230000004888 barrier function Effects 0.000 claims abstract description 30
- 229920013716 polyethylene resin Polymers 0.000 claims abstract description 20
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 13
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 13
- 239000000565 sealant Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 54
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- 239000006096 absorbing agent Substances 0.000 claims description 12
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 9
- 229920000092 linear low density polyethylene Polymers 0.000 claims description 9
- 239000004707 linear low-density polyethylene Substances 0.000 claims description 9
- 239000005001 laminate film Substances 0.000 claims description 8
- -1 polyethylene terephthalate Polymers 0.000 claims description 7
- 239000002344 surface layer Substances 0.000 claims description 7
- 239000004677 Nylon Substances 0.000 claims description 5
- 229920006262 high density polyethylene film Polymers 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 abstract description 4
- 239000005977 Ethylene Substances 0.000 abstract description 4
- 229920001577 copolymer Polymers 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229920006284 nylon film Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 3
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 3
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- 101100508883 Bacillus subtilis (strain 168) iolI gene Proteins 0.000 description 1
- 101100160821 Bacillus subtilis (strain 168) yxdJ gene Proteins 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Vacuum Packaging (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はガス置換又は脱酸素剤入
り包装、特にガス置換又は脱酸素剤入りピロー包装に好
適なガスバリヤー性と耐ピンホール性に優れたラミネー
トフィルムに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated film having a gas barrier property and a pinhole resistance suitable for a package containing a gas replacement or an oxygen absorber, and particularly suitable for a pillow package containing a gas replacement or an oxygen absorber.
【０００２】[0002]
【従来の技術】従来から、酸素の存在による内容物の劣
化や変質を防止する目的で、ガス置換包装、脱酸素剤入
り包装が多用されている。このような包装形態に適する
フィルムは酸素を透過しにくいガスバリヤー性を有する
必要があり、通常ナイロン、ポリビニルアルコール、エ
チレン−ビニルアルコール共重合体等のガスバリヤー性
フィルムからなるラミネートフィルムが使用されてい
る。2. Description of the Related Art Conventionally, a gas replacement package and a package containing an oxygen scavenger have been widely used for the purpose of preventing deterioration or alteration of contents due to the presence of oxygen. A film suitable for such a packaging form needs to have a gas barrier property that is difficult to permeate oxygen, and a laminated film made of a gas barrier film such as nylon, polyvinyl alcohol, ethylene-vinyl alcohol copolymer is usually used. There is.
【０００３】ところが、ガスバリヤー性能の優れたポリ
ビニルアルコールやエチレン−ビニルアルコール共重合
体を積層したフィルム、特にこのようなフィルムをピロ
ー包装に使用した場合には運搬時の摩擦や屈曲あるいは
角のとがった部分との接触によってピンホールが発生し
やすいという欠点があり、上述した包装に使用するには
未だ十分とはいえないものであった。However, a film obtained by laminating a polyvinyl alcohol or an ethylene-vinyl alcohol copolymer having an excellent gas barrier property, particularly when such a film is used for pillow packaging, friction, bending or corner sharpness during transportation is caused. However, there is a drawback that pinholes are likely to be generated due to contact with the above-mentioned portion, which is not yet sufficient for use in the above-mentioned packaging.
【０００４】したがって、このような包装に使用するラ
ミネートフィルムのガスバリヤー層としてはガスバリヤ
ー性が多少劣るナイロンフィルムを使用したり、内容物
は見えないもののガスバリヤー性の優れたアルミニウム
蒸着フィルム、廃棄物処理の点で問題のある塩化ビニリ
デンコートフィルム等が使用されていた。Therefore, as a gas barrier layer of a laminated film used for such packaging, a nylon film having a slightly poor gas barrier property is used, or an aluminum vapor-deposited film having an excellent gas barrier property even though the contents are invisible, is discarded. Vinylidene chloride coated films, which have problems in terms of material processing, have been used.
【０００５】[0005]
【発明が解決しようとする課題】本発明は極めて優れた
ガスバリヤー性と透明性を有し、廃棄物の焼却時にも問
題の少ないポリビニルアルコールフィルムやエチレン−
ビニルアルコール共重合体フィルムをガスバリヤー層に
使用した耐ピンホール性のよいラミネートフィルムを提
供することを目的とする。DISCLOSURE OF THE INVENTION The present invention has a very excellent gas barrier property and transparency, and has little problem even when waste is incinerated.
It is an object of the present invention to provide a laminated film having good pinhole resistance, which uses a vinyl alcohol copolymer film as a gas barrier layer.
【０００６】[0006]
【課題を解決するための手段】本発明によればポリビニ
ルアルコール又はエチレン−ビニルアルコール共重合体
からなるガスバリヤー層（Ａ）に隣接する一方がポリエ
チレン系樹脂層（Ｂ）であり、もう一方がシーラント層
（Ｃ）であることを特徴とするガス置換又は脱酸素剤入
り包装用ラミネートフィルムが提供され、更に、前記ポ
リエチレン系樹脂層（Ｂ）として延伸高密度ポリエチレ
ンフィルムを使用することを特徴とする前記ガス置換又
は脱酸素剤入り包装用ラミネートフィルムが提供され、
更に、前記ポリエチレン系樹脂層（Ｂ）として直鎖状低
密度ポリエチレンフィルムを使用することを特徴とする
前記ガス置換又は脱酸素剤入り包装用ラミネートフィル
ムが提供され、更に、ナイロン又はポリエチレンテレフ
タレートを表面層（Ｄ）に使用することを特徴とする前
記ガス置換又は脱酸素剤入り包装用ラミネートフィルム
が提供され、更にまた、前記ガス置換又は脱酸素剤入り
ピロー包装用ラミネートフィルムが提供される。According to the present invention, one side adjacent to a gas barrier layer (A) made of polyvinyl alcohol or an ethylene-vinyl alcohol copolymer is a polyethylene resin layer (B), and the other side is a polyethylene type resin layer (B). A laminate film for packaging containing a gas displacement or oxygen absorber is provided, which is a sealant layer (C), and further, a stretched high density polyethylene film is used as the polyethylene resin layer (B). A laminate film for packaging containing the gas replacement or oxygen absorber is provided,
Further, there is provided the above-mentioned packaging film containing a gas displacement or oxygen scavenger, which is characterized by using a linear low-density polyethylene film as the polyethylene resin layer (B), and further, a nylon or polyethylene terephthalate surface is provided. There is provided the above-mentioned gas displacement or oxygen absorber-containing packaging laminate film for use in the layer (D), and further, there is provided the above gas displacement or oxygen absorber-containing pillow packaging laminate film.
【０００７】すなわち、本発明者はガスバリヤー性の特
に優れたポリビニルアルコール又はエチレン−ビニルア
ルコール共重合体をガスバリヤー層（Ａ）として用いた
場合のガスバリヤー層（Ａ）に隣接する樹脂について種
々検討した結果、一方にポリエチレン系樹脂層（Ｂ）、
もう一方にシーラント層（Ｃ）を配した場合に耐ピンホ
ール性が大幅に向上してガス置換又は脱酸素剤入り包
装、特にガス置換又は脱酸素剤入りピロー包装に極めて
好適なラミネートフィルムが得られることを見いだし本
発明に到達した。That is, the inventor of the present invention uses various resins adjacent to the gas barrier layer (A) when polyvinyl alcohol or ethylene-vinyl alcohol copolymer having a particularly excellent gas barrier property is used as the gas barrier layer (A). As a result of the examination, the polyethylene resin layer (B) on one side,
When the sealant layer (C) is placed on the other side, the pinhole resistance is greatly improved, and a laminated film extremely suitable for gas replacement or oxygen absorber-containing packaging, particularly gas replacement or oxygen absorber pillow packaging is obtained. The present invention has been achieved by finding out that it is possible.
【０００８】以下に、本発明を具体的に説明する。本発
明のガスバリヤー層（Ａ）にはポリビニルアルコール
（以下、ＰＶＡと称す。）又はエチレン−ビニルアルコ
ール共重合体（以下、ＥＶＯＨと称す。）を使用する。
ＥＶＯＨはエチレン含量が多くなるとガスバリヤー性が
低下するのでエチレン含量は４０mol%以下のものを使用
するのが好ましい。また、ガスバリヤー層（Ａ）の厚み
は８〜２０μ程度が好ましく、特に、ガスバリヤー性の
点からも１０μ以上にするのが好ましい。The present invention will be described in detail below. Polyvinyl alcohol (hereinafter referred to as PVA) or ethylene-vinyl alcohol copolymer (hereinafter referred to as EVOH) is used for the gas barrier layer (A) of the present invention.
When EVOH has a large ethylene content, the gas barrier property deteriorates, so it is preferable to use an EVOH having an ethylene content of 40 mol% or less. The thickness of the gas barrier layer (A) is preferably about 8 to 20 μm, and particularly preferably 10 μm or more from the viewpoint of gas barrier property.
【０００９】ガスバリヤー層（Ａ）に隣接するポリエチ
レン系樹脂層（Ｂ）としては高密度ポリエチレン、直鎖
状低密度ポリエチレン等が挙げられるが、その中でも延
伸した高密度ポリエチレンフィルムを使用するのが耐ピ
ンホール性、透明性の点から好ましい。なお、ポリエチ
レン系樹脂層（Ｂ）の厚みは１２〜４０μ程度、好まし
く延伸高密度ポリエチレンの場合は１５〜３０μ、直鎖
状低密度ポリエチレンは２５〜４０μ程度にするのがよ
い。ポリエチレン系樹脂層（Ｂ）の厚みが１５μ未満で
は耐ピンホール性が向上しないので好ましくない。Examples of the polyethylene resin layer (B) adjacent to the gas barrier layer (A) include high-density polyethylene and linear low-density polyethylene. Among them, a stretched high-density polyethylene film is used. It is preferable in terms of pinhole resistance and transparency. The thickness of the polyethylene resin layer (B) is about 12 to 40 µ, preferably 15 to 30 µ in the case of stretched high-density polyethylene, and about 25 to 40 µ for linear low-density polyethylene. When the thickness of the polyethylene resin layer (B) is less than 15 μm, the pinhole resistance is not improved, which is not preferable.
【００１０】ガスバリヤー層（Ａ）のもう一方の面に隣
接するシーラント層（Ｃ）としては低密度ポリエチレ
ン、高密度ポリエチレン、直鎖状低密度ポリエチレン等
のポリエチレン系樹脂やポリプロピレン、プロピレン−
エチレン共重合体等のポリプロピレン系樹脂等のポリオ
レフィン系樹脂の単独、ブレンドあるいは積層した樹脂
層が挙げられる。これらの樹脂のうちでもシール性に優
れた直鎖状低密度ポリエチレンを主成分とするシーラン
ト層（Ｃ）を用いるのが特に好ましく、シーラント層
（Ｃ）の厚みは２５〜５０μにするのが好ましい。厚み
が２５μ未満の場合はシール強度のみならず耐ピンホー
ル性も低下するので好ましくない。As the sealant layer (C) adjacent to the other surface of the gas barrier layer (A), polyethylene resin such as low density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, propylene-
Examples of the resin layer include a polyolefin resin such as a polypropylene resin such as an ethylene copolymer, a blend, or a laminate of polyolefin resins. Among these resins, it is particularly preferable to use the sealant layer (C) containing a linear low-density polyethylene excellent in sealing property as a main component, and the thickness of the sealant layer (C) is preferably 25 to 50 μm. . When the thickness is less than 25 μ, not only the sealing strength but also the pinhole resistance is deteriorated, which is not preferable.
【００１１】本発明のラミネートフィルムは上述したよ
うにガスバリヤー層（Ａ）に隣接する一方にポリエチレ
ン系樹脂層（Ｂ）、もう一方にシーラント層（Ｃ）とし
たものであるが、得られるラミネートフィルムの耐熱
性、機械的強度を向上させ、更に、耐摩擦ピンホール性
を向上させるために、更に表面層（Ｄ）にナイロン、ポ
リエステル樹脂等を配するのが好ましい。この表面層
（Ｄ）の厚みは１０〜４０μの範囲で適宜選択できる
が、耐摩耗ピンホール性を向上させるためには表面層
（Ｄ）の厚み１５μ以上にするのが好ましく、特にポリ
エチレン系樹脂層（Ｂ）に直鎖状低密度ポリエチレンを
用いた場合には２５μ以上にするのが好ましい。As described above, the laminate film of the present invention has the polyethylene resin layer (B) on one side and the sealant layer (C) on the other side which are adjacent to the gas barrier layer (A). In order to improve the heat resistance and mechanical strength of the film and further improve the friction pinhole resistance, it is preferable to further dispose nylon, polyester resin, etc. in the surface layer (D). The thickness of the surface layer (D) can be appropriately selected within the range of 10 to 40 µ, but in order to improve abrasion pinhole resistance, it is preferable to make the thickness of the surface layer (D) 15 µm or more, particularly polyethylene resin. When linear low density polyethylene is used for the layer (B), it is preferably 25 μm or more.
【００１２】なお、本発明のラミネートフィルムの層構
成は上述したように（Ｄ）／（Ｂ）／（Ａ）／（Ｃ）の
構成にするのが最も一般的であるが、それに限定される
ものではなく例えば、（Ｄ）層と（Ｂ）層の間に他の層
を介在させたり、（Ｄ）層自体を複数層とすることもも
ちろん可能である。The layer structure of the laminate film of the present invention is most commonly (D) / (B) / (A) / (C) as described above, but is not limited thereto. Of course, it is also possible to interpose another layer between the (D) layer and the (B) layer, or to make the (D) layer itself into a plurality of layers.
【００１３】このようなラミネートフィルムは、例えば
通常のドライラミネート法により容易に製造することが
できる。なお、上述した合成樹脂に帯電防止剤、滑剤、
アンチブロッキング剤、造核剤を添加したり、印刷処理
を施すことも可能である。Such a laminated film can be easily manufactured, for example, by a usual dry laminating method. In addition, the above-mentioned synthetic resin, antistatic agent, lubricant,
It is also possible to add an anti-blocking agent or a nucleating agent, or to carry out a printing process.
【００１４】[0014]
【実施例】以下に、本発明を実施例に基づき詳細に説明
する。なお、ラミネートフィルムの諸性質は以下の方法
で評価した。 ＜ガスバリヤー性＞ＡＳＴＭ Ｄ３９８５に準拠して２
９℃、７５％ＲＨの条件下で酸素透過率を測定した結果
で評価した。 ＜透明性＞ＪＩＳ Ｋ７１５０に準拠して測定して得ら
れたＨａｚｅ値により評価した。EXAMPLES The present invention will be described in detail below based on examples. The properties of the laminated film were evaluated by the following methods. <Gas barrier property> 2 according to ASTM D3985
The oxygen permeability was evaluated under the conditions of 9 ° C. and 75% RH for evaluation. <Transparency> Haze value obtained by measurement according to JIS K7150 was evaluated.
【００１５】＜耐ピンホール性＞ ［耐摩擦ピンホール性］ラミネートフィルムの表面層
（Ｄ）が表面にくるように４つ折りにし、１００kg/cm2
でプレスして得られた試料を一回転の円周が３００ｍｍ
の回転式摩耗試験機に装着して、１５０ｒｐｍの回転数
でろ紙を摩擦物として５００回転させた後のピンホール
の発生率（％）で評価した。 ［耐屈曲ピンホール性］２３℃、５０％ＲＨの条件下で
理学工業製のゲルボフレックステスターにラミネートフ
ィルムを装着して、１回あたり４４０゜のねじれを１０
００回与えた後のピンホール数で評価した。<Pinhole resistance> [Abrasion pinhole resistance] Folded in four so that the surface layer (D) of the laminated film is on the surface, 100 kg / cm 2
The sample obtained by pressing at
Was attached to the rotary abrasion tester of No. 1 and the filter paper was rotated 500 times as a friction material at a rotation speed of 150 rpm to evaluate the occurrence rate (%) of pinholes. [Bending resistance to pinholes] A laminated film was attached to a gelbo flex tester manufactured by Rigaku Kogyo under the conditions of 23 ° C and 50% RH, and a twist of 440 ° was applied for 10 times.
It was evaluated by the number of pinholes after giving it 100 times.
【００１６】実施例１ 表面層（Ｄ）に厚み２５μの二軸延伸ナイロンフィル
ム、ポリエチレン系樹脂層（Ｂ）に厚み１５μの二軸延
伸高密度ポリエチレンフィルム（東燃化学（株）製、商
品名：ルピック）、ガスバリヤー層（Ａ）に厚み１２μ
のＰＶＡフィルム、シーラント層（Ｃ）に厚み３５μの
直鎖状低密度ポリエチレンフィルムを用いこの順序でド
ライラミネートして本発明のラミネートフィルムを得
た。諸性質を表１に示す。Example 1 A biaxially stretched nylon film having a thickness of 25 μ was formed on the surface layer (D), and a biaxially stretched high density polyethylene film having a thickness of 15 μ was formed on the polyethylene resin layer (B) (trade name: manufactured by Tonen Chemical Co., Ltd.). (Lupick), gas barrier layer (A) thickness 12μ
The PVA film and the sealant layer (C) were dry-laminated in this order using a linear low-density polyethylene film having a thickness of 35 μm to obtain a laminated film of the present invention. Various properties are shown in Table 1.
【００１７】実施例２ ポリエチレン系樹脂層（Ｂ）として厚みが２５μの一軸
延伸高密度ポリエチレンフィルム（日本石油化学（株）
製、商品名：バリーラＨＧ−２５）を用いた以外は実施
例１と同様にして本発明のラミネートフィルムを得た。
諸性質を表１に示す。Example 2 As a polyethylene resin layer (B), a uniaxially stretched high density polyethylene film having a thickness of 25 μ (Nippon Petrochemical Co., Ltd.)
A laminated film of the present invention was obtained in the same manner as in Example 1 except that the product, trade name: Valilla HG-25) was used.
Various properties are shown in Table 1.
【００１８】実施例３ ポリエチレン系樹脂層（Ｂ）として厚みが３５μの直鎖
状低密度ポリエチレンフィルムを用いた以外は実施例１
と同様にして本発明のラミネートフィルムを得た。諸性
質を表１に示す。Example 3 Example 1 was repeated except that a linear low density polyethylene film having a thickness of 35 μ was used as the polyethylene resin layer (B).
A laminated film of the present invention was obtained in the same manner as. Various properties are shown in Table 1.
【００１９】比較例１〜３ ポリエチレン系樹脂層（Ｂ）に代えてそれぞれ厚み２５
μの二軸延伸ナイロンフィルム、厚み２０μの未延伸ナ
イロンフィルム、厚み２５μの二軸延伸ポリプロピレン
フィルムを用いた以外は実施例１と同様にしてラミネー
トフィルムを得た。諸性質を表１に示す。Comparative Examples 1 to 3 Instead of the polyethylene resin layer (B), the thickness is 25, respectively.
A laminated film was obtained in the same manner as in Example 1 except that a biaxially stretched nylon film having a thickness of 20 μm, an unstretched nylon film having a thickness of 20 μm, and a biaxially stretched polypropylene film having a thickness of 25 μm were used. Various properties are shown in Table 1.
【００２０】[0020]
【表１】 [Table 1]
【００２１】表１からも明らかなようにＰＶＡ又はＥＶ
ＯＨからなるガスバリヤー層に隣接する一方にポリエチ
レン系樹脂層、もう一方にシーラント層を配した本発明
のラミネートフィルムが摩擦及び屈曲のいずれの試験で
も優れた耐ピンホール性を示すのに対して、比較例３に
示す二軸延伸ポリプロピレン層を配した場合は屈曲にお
ける耐ピンホール性は良好になるが摩擦における耐ピン
ホール性に劣っていた。また比較例１、２に示すように
延伸もしくは未延伸のナイロン層を配した場合はいずれ
の試験方法においても耐ピンホール性に劣っていた。し
たがって、比較例１〜３の構成のラミネートフィルムで
はガス置換包装や脱酸素剤入り包装、特にピロー包装の
ように背貼りシールを行う形態の場合には使用できない
ものであった。As is clear from Table 1, PVA or EV
Whereas the laminated film of the present invention having a polyethylene resin layer on one side and a sealant layer on the other side adjacent to the gas barrier layer made of OH shows excellent pinhole resistance in both friction and bending tests. When the biaxially stretched polypropylene layer shown in Comparative Example 3 was arranged, the pinhole resistance in bending was good, but the pinhole resistance in friction was poor. Further, when a stretched or unstretched nylon layer was arranged as shown in Comparative Examples 1 and 2, the pinhole resistance was inferior in any test method. Therefore, the laminated films having the configurations of Comparative Examples 1 to 3 could not be used in the case of gas replacement packaging, oxygen-absorbing agent-containing packaging, particularly pillow packaging such as pillow packaging.
【００２２】[0022]
【効果】本発明のラミネートフィルムはガスバリヤー性
は優れているが、硬くて脆い傾向のあるＰＶＡやＥＶＯ
Ｈをガスバリヤー層として使用しているにもかかわらず
耐ピンホール性が向上している、ガス置換包装、脱酸素
剤入り包装、特にピンホールの発生しやすいピロー包装
形態に使用しても運送やその他の取扱い中にピンホール
が発生して内容物が劣化したり変質することがないとい
う利点を有している。また、ポリ塩化ビニリデン等のよ
うな塩素含有樹脂を使用していないので焼却時の公害も
防止できる。[Effect] The laminated film of the present invention has excellent gas barrier properties, but tends to be hard and brittle, such as PVA and EVO.
Despite the use of H as a gas barrier layer, it has improved pinhole resistance, and is transported even when used in gas displacement packaging, deoxidizer-containing packaging, especially pillow packaging in which pinholes are likely to occur. Also, there is an advantage that pinholes do not occur during handling, and the contents do not deteriorate or deteriorate. Further, since chlorine-containing resin such as polyvinylidene chloride is not used, pollution at the time of incineration can be prevented.
【図１】本発明のラミネートフィルムの一例を示す断面
図である。FIG. 1 is a cross-sectional view showing an example of a laminated film of the present invention.
Ａ ガスバリヤー層 Ｂ ポリエチレン系樹脂層 Ｃ シーラント層 Ｄ 表面層 A gas barrier layer B polyethylene resin layer C sealant layer D surface layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ３２Ｂ 27/32 Ｃ 8115−4Ｆ 27/34 7421−4Ｆ 27/36 7421−4Ｆ Ｂ６５Ｂ 31/04 Ｆ 55/04 Ｔ Ｂ６５Ｄ 65/40 Ｄ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location B32B 27/32 C 8115-4F 27/34 7421-4F 27/36 7421-4F B65B 31/04 F 55/04 T B65D 65/40 D
Claims (5)
ルアルコール共重合体からなるガスバリヤー層（Ａ）に
隣接する一方がポリエチレン系樹脂層（Ｂ）であり、も
う一方がシーラント層（Ｃ）であることを特徴とするガ
ス置換又は脱酸素剤入り包装用ラミネートフィルム。1. A gas barrier layer (A) made of polyvinyl alcohol or an ethylene-vinyl alcohol copolymer, one side being a polyethylene resin layer (B) and the other side being a sealant layer (C). A laminated film for packaging containing a characteristic gas replacement or oxygen absorber.
伸高密度ポリエチレンフィルムを使用することを特徴と
する請求項１記載のガス置換又は脱酸素剤入り包装用ラ
ミネートフィルム。2. A laminated film for packaging containing a gas replacement or oxygen scavenger according to claim 1, wherein a stretched high density polyethylene film is used as the polyethylene resin layer (B).
鎖状低密度ポリエチレンフィルムを使用することを特徴
とする請求項１記載のガス置換又は脱酸素剤入り包装用
ラミネートフィルム。3. The laminate film for gas replacement or oxygen absorber containing packaging according to claim 1, wherein a linear low-density polyethylene film is used as the polyethylene resin layer (B).
を表面層（Ｄ）に使用することを特徴とする請求項１〜
３記載のガス置換又は脱酸素剤入り包装用ラミネートフ
ィルム。4. Nylon or polyethylene terephthalate is used for the surface layer (D).
The laminated film for packaging containing the gas replacement or oxygen absorber according to 3.
入りピロー包装用ラミネートフィルム。5. A laminate film for pillow packaging containing the gas replacement or oxygen scavenger according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33063293A JPH07186337A (en) | 1993-12-27 | 1993-12-27 | Gas substituting or oxygen scavenger-containing packaging laminated film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33063293A JPH07186337A (en) | 1993-12-27 | 1993-12-27 | Gas substituting or oxygen scavenger-containing packaging laminated film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07186337A true JPH07186337A (en) | 1995-07-25 |
Family
ID=18234843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33063293A Pending JPH07186337A (en) | 1993-12-27 | 1993-12-27 | Gas substituting or oxygen scavenger-containing packaging laminated film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07186337A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002051705A3 (en) * | 2000-12-22 | 2003-03-06 | Cryovac Inc | Method of sterilizing and initiating a scavenging reaction in a package |
| JP2005119063A (en) * | 2003-10-15 | 2005-05-12 | Toppan Printing Co Ltd | Packaging material |
| JP2006007509A (en) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | Laminated material suppressed in occurrence of pinhole and laminated packaging bag |
| WO2021132683A1 (en) * | 2019-12-26 | 2021-07-01 | 三菱ケミカル株式会社 | Laminate, packaging material, and food packaging material |
-
1993
- 1993-12-27 JP JP33063293A patent/JPH07186337A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002051705A3 (en) * | 2000-12-22 | 2003-03-06 | Cryovac Inc | Method of sterilizing and initiating a scavenging reaction in a package |
| US6875400B2 (en) | 2000-12-22 | 2005-04-05 | Cryovac, Inc. | Method of sterilizing and initiating a scavenging reaction in an article |
| JP2005119063A (en) * | 2003-10-15 | 2005-05-12 | Toppan Printing Co Ltd | Packaging material |
| JP2006007509A (en) * | 2004-06-24 | 2006-01-12 | Toppan Printing Co Ltd | Laminated material suppressed in occurrence of pinhole and laminated packaging bag |
| WO2021132683A1 (en) * | 2019-12-26 | 2021-07-01 | 三菱ケミカル株式会社 | Laminate, packaging material, and food packaging material |
| CN114981079A (en) * | 2019-12-26 | 2022-08-30 | 三菱化学株式会社 | Laminate, packaging material, and food packaging material |
| EP4082786A4 (en) * | 2019-12-26 | 2023-02-08 | Mitsubishi Chemical Corporation | Laminate, packaging material, and food packaging material |
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