JPS62156942A - Double-layer gas-barriering film or sheet and manufacture thereof - Google Patents

Double-layer gas-barriering film or sheet and manufacture thereof

Info

Publication number
JPS62156942A
JPS62156942A JP29832985A JP29832985A JPS62156942A JP S62156942 A JPS62156942 A JP S62156942A JP 29832985 A JP29832985 A JP 29832985A JP 29832985 A JP29832985 A JP 29832985A JP S62156942 A JPS62156942 A JP S62156942A
Authority
JP
Japan
Prior art keywords
film
vapor
sheet
gas barrier
synthetic resin
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
Application number
JP29832985A
Other languages
Japanese (ja)
Other versions
JPH0535067B2 (en
Inventor
勤 井坂
裕久 藤田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyobo Co Ltd
Original Assignee
Toyobo Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP29832985A priority Critical patent/JPS62156942A/en
Publication of JPS62156942A publication Critical patent/JPS62156942A/en
Publication of JPH0535067B2 publication Critical patent/JPH0535067B2/ja
Granted legal-status Critical Current

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  • Laminated Bodies (AREA)
  • Physical Vapour Deposition (AREA)
  • Wrappers (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 [産業上の利用分計] 本発明は、生鮮食品、加工食品、医薬品、医療機器等の
包装用フィルム、特にこれらの用途において重要な特性
と考えられているガスバリヤ−性、防湿性及び遮光性等
の良好なフィルム又はシート、及びその製造方法に関す
るものである。
[Detailed Description of the Invention] [Industrial Application] The present invention is a film for packaging fresh foods, processed foods, pharmaceuticals, medical devices, etc. The present invention relates to a film or sheet with good properties such as moisture resistance, moisture resistance and light shielding properties, and a method for producing the same.

[従来の技術1 近年、食品流通形態や食生活そのものの変革によって食
品の包装形態も大幅に変わってきており、包装用のフィ
ルムやシート(以下フィルムで代表する)に対する要求
特性はますます厳しくなって籾ている。中でも気体や水
分の透過度が小さくしかも冷凍加工、煮沸処理、レトル
ト処理等の処理によっても食品としての価値が低下しな
い様なフィルムへの要望が高まっている。即ち魚肉、畜
肉、貝類等の包装においては蛋白質や油脂等の酸化や変
質を抑制し味や鮮度を保持することが重要であるが、そ
れらの為には、ガスバリヤ−性の良い包装材を用いて空
気の透過を阻止する必要がある。しかもガスバリヤ−性
フィルムで包装すると内容物特有の臭気や香気が保持さ
れると共に、水分の透過も阻止されるので乾燥物にあっ
ては吸湿劣化が防止されまた含水物の場合は水分の揮発
による変質や固化が防止され、包装当初の新鮮な風味を
長時間保持することができる。
[Conventional technology 1] In recent years, food packaging formats have changed significantly due to changes in food distribution formats and eating habits themselves, and the required characteristics for packaging films and sheets (hereinafter referred to as "film") are becoming increasingly strict. They are harvesting rice. In particular, there is a growing demand for films that have low gas and moisture permeability and that do not lose their value as food products even when subjected to freezing, boiling, retorting, or other treatments. In other words, when packaging fish, meat, shellfish, etc., it is important to suppress oxidation and deterioration of proteins, oils, etc. and maintain taste and freshness. For this purpose, packaging materials with good gas barrier properties are used. It is necessary to prevent air from passing through. Furthermore, packaging with a gas barrier film retains the odor and aroma characteristic of the contents, and also prevents the permeation of moisture, which prevents deterioration due to moisture absorption in the case of dry items, and prevents deterioration due to moisture volatilization in the case of hydrated items. This prevents deterioration and solidification, allowing the product to retain its original fresh flavor for a long time.

また多くの食品は光(紫外線等)によっても変質し易く
、遮光性フィルムで包装することによって変質は一段と
抑制される。こうした理由からかまぼこ等の練製品、バ
ター、チーズ等の乳製品、味噌、茶、コーヒー、ハム・
ソーセージ類、インスタント食品、カステラ、ビスケッ
ト等の菓子類等の包装フィルムとして、前記ガスバリヤ
−性(防湿性を含む)や遮光性は極めて重要な特性とさ
れている。これらの特性は食品包装用フィルムに限られ
るものではなく、無菌状態での取扱いが必要とされる医
療品や医療機器等の包装用フィルムとしても極めて重要
である。
Many foods are also susceptible to deterioration due to light (ultraviolet rays, etc.), and deterioration can be further suppressed by packaging them with a light-shielding film. For these reasons, we use paste products such as kamaboko, dairy products such as butter and cheese, miso, tea, coffee, ham, etc.
The gas barrier properties (including moisture resistance) and light blocking properties are considered to be extremely important properties for packaging films for sausages, instant foods, cakes such as castella cakes, biscuits, and the like. These properties are not limited to films for food packaging, but are also extremely important for films for packaging medical products, medical devices, etc. that require sterile handling.

この様なところからガスバリヤ−性及び遮光性の改善を
期して多くの研究か行なわれているか、上記特性の優れ
たものとして現在最も汎用されているのはポリエステル
やポリオレフィン、ポリ塩化ビニリデン等の合成樹脂フ
ィルムの片面にアルミニウムをはじめとする金属或はS
iO2等の金属化合物を蒸着せしめた蒸着フィルムであ
る。
Many studies have been conducted to improve gas barrier properties and light-shielding properties, and the most widely used materials with the above characteristics are synthetic materials such as polyester, polyolefin, and polyvinylidene chloride. Metal such as aluminum or S is coated on one side of the resin film.
It is a vapor-deposited film on which a metal compound such as iO2 is vapor-deposited.

即ち金属や金属化合物はそれ自体優れたガスバリヤ−性
と遮光性を有しているので、合成樹脂の片面にこれらの
蒸着層を形成することにより、合成樹脂フィルムに不足
しているガスバリヤ−性及び遮光性を大幅に改善するこ
とかできる。
In other words, since metals and metal compounds themselves have excellent gas barrier properties and light blocking properties, by forming a vapor-deposited layer of these on one side of the synthetic resin, the gas barrier properties and light blocking properties that are lacking in synthetic resin films can be overcome. Light blocking properties can be significantly improved.

[発明か解決しようとする問題点] 金属又は金属化合物蒸着フィルムは前述の如く通常の合
成樹脂フィルムに比べると優れたガスバリヤ−性と遮光
性を有しており、各種の包装用フィルムとして賞月され
ている。しかしながら包装食品等に対する安全基準が厳
しくなり需要省側の衛生観念が高まってくるにつれて、
包装用フィルムに要求されるガスバリヤ−性及び遮光性
は一段と厳しさを増しており、現在の金属又は金属化合
物蒸着フィルムでは満足し得なくなってぎている。
[Problem to be solved by the invention] As mentioned above, metal or metal compound vapor-deposited films have superior gas barrier properties and light shielding properties compared to ordinary synthetic resin films, and are highly prized as various packaging films. has been done. However, as safety standards for packaged foods become stricter and the Ministry of Demand becomes more conscious of hygiene,
Gas barrier properties and light shielding properties required of packaging films are becoming more and more severe, and current metal or metal compound vapor-deposited films are no longer able to satisfy them.

本発明はこの様な事情に着目してなされたものであって
、その目的は従来の金属又は金属化合物蒸着フィルムよ
りも更に優れたガスバリヤ−性及び遮光性を発揮し得る
様なフィルム(又はシート)を提供しようとするもので
あり、本発明の他の目的は、上記の様な優れたガスバリ
ヤ−性及び遮光性を示すフィルム(又はシート)を生産
性良く製造することのできる方法を提供しようとするも
のである。
The present invention has been made in view of these circumstances, and its purpose is to develop a film (or sheet) that can exhibit better gas barrier and light shielding properties than conventional metal or metal compound vapor-deposited films. ), and another object of the present invention is to provide a method for manufacturing with high productivity a film (or sheet) exhibiting excellent gas barrier properties and light blocking properties as described above. That is.

[問題点を解決する為の手段] 本発明に係るガスバリヤ−性フィルム(又はシート)の
構成は、少なくとも一方の外面が、最大高さ粗さが0.
8μm以上で且つ外面構成フィルム又はシートの厚さの
60%以下である粗面で形成された複層の合成樹脂製フ
ィルム又はシートの上記両外面のうちいずれか一方の外
面と1以上の積層界面に金属又は金属化合物の蒸着層が
形成されたものであるところに要旨を有し、また本発明
に係る製造方法は、最大高さ粗さが0.8μm以上で且
つフィルム又はシートの厚さの60%以下である粗面上
に金属又は金属化合物の第1蒸着層を有する合成樹脂製
フィルム又はシートと、金属又は金属化合物の第2蒸着
層が形成された合成樹脂製フィルム又はシートを、前記
第1蒸着層が表面側に、前記第2蒸着層が積層界面にく
る様に積層するところに要旨を有するものである。
[Means for Solving the Problems] The structure of the gas barrier film (or sheet) according to the present invention is such that at least one outer surface has a maximum height roughness of 0.
Either one of the two outer surfaces of a multilayer synthetic resin film or sheet and one or more lamination interfaces formed with a rough surface that is 8 μm or more and 60% or less of the thickness of the outer surface constituent film or sheet. The gist is that a vapor-deposited layer of a metal or metal compound is formed on the film or sheet, and the manufacturing method according to the present invention is characterized in that the maximum height roughness is 0.8 μm or more and the thickness of the film or sheet is A synthetic resin film or sheet having a first vapor deposited layer of a metal or metal compound on a rough surface with a roughness of 60% or less, and a synthetic resin film or sheet having a second vapor deposited layer of a metal or metal compound formed on the rough surface, The gist is that the first vapor deposited layer is stacked on the surface side, and the second vapor deposited layer is stacked on the lamination interface.

[作用] 金属又は金属化合物蒸着フィルムは、合成樹脂フィルム
の有する優れた柔軟性に金属又は金属化合物蒸着層(以
下単に金属蒸着層ということがある)の有する高レベル
のガスバリヤ−性と遮光性が拠金されたもので、包装用
フィルムとしては非常に優れたものである。そこで本発
明者等は上記2種の基材の組合せを前提として、ガスバ
リヤ−性及び遮光性を更に高めるべく研究を開始した。
[Function] The metal or metal compound vapor deposited film combines the excellent flexibility of the synthetic resin film with the high level gas barrier and light shielding properties of the metal or metal compound vapor deposited layer (hereinafter simply referred to as the metal vapor deposited layer). It is a very good packaging film. Therefore, the present inventors began research to further improve gas barrier properties and light shielding properties based on the combination of the above two types of base materials.

そして先ず最初に金属蒸着層を厚肉化する方向で研究を
行なったところ、金属蒸着層を厚くすると素材費が高騰
するばかりでなく生産性も著しく低下し、更には蒸着フ
ィルムの柔軟性が乏しくなって包装用として適正を欠く
ものとなる、等の問題か生しることを知った。そこで他
の改善策を見出すべく更に研究を進めた結果、単層又は
複層の合成樹脂フィルムの両面に金属蒸着層を形成した
ものは、単に各金属蒸着層のガスバリヤ−性及び遮光性
を総合しただけのものではなく、2層の金属蒸着層が相
乗的に作用してガスバリヤ−性及び遮光性を飛躍的に改
善し得ることを知り、別途特許出願を行なった。
First of all, we conducted research in the direction of increasing the thickness of the metal evaporated layer, and found that making the metal evaporated layer thicker not only increases the material cost but also significantly reduces productivity, and furthermore, the flexibility of the evaporated film becomes poor. I learned that this could lead to problems such as the product becoming unsuitable for packaging. As a result of further research to find other improvement measures, we found that a single-layer or multi-layer synthetic resin film with metal vapor-deposited layers formed on both sides simply combines the gas barrier and light-shielding properties of each metal vapor-deposited layer. It was discovered that the two metal vapor deposited layers act synergistically to dramatically improve gas barrier properties and light shielding properties, and filed a separate patent application.

ところか上記の如く両面に蒸着層を形成したフィルムは
片面蒸着フィルムに比べて非常に優れたガスバリヤ−性
を有しているが、蒸着すべきフィルム表面が両方共平滑
になっているものを用いたときは次の様な問題を生じる
ことが明らかとなった。尚本明細書でいう平滑面とは、
後述する粗面に相対するものであり、JIS B−06
01で規定する最大高さ粗さが0.8μm未満のものを
いう。
However, as mentioned above, a film with vapor-deposited layers on both sides has much better gas barrier properties than a single-sided vapor-deposited film; It became clear that the following problems would occur: In addition, the smooth surface referred to in this specification is
This corresponds to the rough surface described later, and is compliant with JIS B-06.
The maximum height roughness specified by 01 is less than 0.8 μm.

即ち両面蒸着フィルムの製造及び処理に当たっては通常
の合成樹脂フィルムと同様適当な芯材に巻回されるが、
両面蒸着フィルムの場合、フィルム表面を両方共平滑と
したものでは蒸着面も平滑となる為蒸着面同士の接触部
をミクロ的に観察した場合接触面積が非常に広くなり、
接触部にブロッキングを起こすことがある。しかも該密
接面の滑りが悪い為(前述の如くミクロ的な接触面積が
広い為)、例えば第2図(A)に例示する如く両面蒸着
フィルムF、F間に一旦空気が巻き込まれると蒸着面が
滑って開放され空気を排出していくという機能が期待で
きずフィルムFが一部で膨らんだ状態のままで安定して
しまう。この状態で更にその外周側から次の巻回層Gや
重ねられてくると、空気を内部に残したままでフィルム
Fが屈曲し、その上へフィルムGが積層されていく為第
2図(B)に示す如くフィルムFやGにしわ1ができる
。そうなるとフィルムの外観が著しく損なわれるばかり
でなく、折れ重なり部の蒸着層が折損してクラックがで
きガスバリヤ−性にも少なからぬ悪影響が現われてくる
That is, when manufacturing and processing double-sided vapor deposited films, they are wound around a suitable core material in the same way as ordinary synthetic resin films.
In the case of double-sided vapor-deposited films, if both film surfaces are smooth, the vapor-deposited surfaces will also be smooth, so if you microscopically observe the contact area between the vapor-deposited surfaces, the contact area will be very large.
Blocking may occur at the contact area. Moreover, since the close contact surface has poor slippage (because the microscopic contact area is wide as described above), once air is drawn in between the double-sided vapor deposited films F and F, as illustrated in FIG. 2(A), the vapor deposited surface The function of sliding open and discharging air cannot be expected, and the film F remains partially swollen and stable. In this state, when the next layer G is layered from the outer periphery, the film F bends while leaving air inside, and the film G is stacked on top of it, as shown in Figure 2 (B ), wrinkles 1 are formed on films F and G. If this happens, not only will the appearance of the film be significantly impaired, but the vapor deposited layer at the folded portions will break and crack, resulting in considerable adverse effects on gas barrier properties.

そこでこの様な問題についても改善すべく更に研究を重
ねた結果、片面を合成樹脂のままで残してやれば巻回時
における蒸着層同士の直接的な接触がなくなってブロッ
キングが防止されるばかりでなく、巻回時におけるフィ
ルム相互間の滑りも良好に保たれ、しかも外面の少なく
とも一方を粗面化してやれば巻回時のミクロ的な接触面
積が少なくなって滑りが一段と改善され前述の如く巻回
工程で空気が巻籾込まれても次層の巻回圧によって空気
が側縁方向へ押し出されフィルムFとGがきれいに巻き
重ねられ、前記第2図(B)に示した様な′°シわ°′
を全く生じなくなることが明らかとなった。そしてこの
様に滑りを一段と改善する為の粗さの程度を明確にする
目的で更に研究を重ねた結果、合成樹脂製フィルムの蒸
着膜形成面を最大高さ粗さくJIS B−0801)が
0.8.um以上となる様に粗面化しておくことにより
、前記°゛シゎ′°やクラックの発生を確実に防止し得
ることが分かった。但し上記最大高さ粗さが当該蒸着膜
の形成される合成樹脂製フィルム(又はシート)の厚さ
の60%を超えると、基材たる該合成樹脂製フィルムの
強度が乏しくなって包装用等としての適正を欠くものと
なる。この様なところから本発明では、蒸着膜の形成さ
れる合成樹脂製フィルム(又はシート)の蒸着膜形成面
側に形成される粗面を、最大高さ粗さがO,aμm以上
で且つ該フィルム厚さの60%以下に設定した。尚この
様な粗面化合成樹脂製フィルムに蒸着膜を形成すると、
当該粗面が若干均質化されるが、該蒸着膜の外面には合
成樹脂性フィルムの粗度にほぼ対応する粗面が形成され
ることになり、フィルム巻回面の滑りを著しく改善する
ことがでとる。また上記の様な粗面化による滑り改善効
果は、巻回時に接触する少なくとも一方の蒸着膜が発揮
すれは十分であるから本発明の片面蒸着フィルムは、両
外面に粗面化処理を施したものと片面だけに粗面化処理
を施したものの両方を包含するものとする。
Therefore, as a result of further research to improve this problem, we found that if one side is left as a synthetic resin, direct contact between the vapor deposited layers during winding will be eliminated, and blocking will not only be prevented. , the slippage between the films during winding is maintained well, and if at least one of the outer surfaces is roughened, the microscopic contact area during winding is reduced, and slippage is further improved. Even if air is rolled in during the process, the winding pressure of the next layer pushes the air toward the side edges, and the films F and G are neatly rolled over each other, resulting in a '° pattern as shown in Figure 2 (B) above. Wow
It has become clear that this does not occur at all. As a result of further research aimed at clarifying the degree of roughness to further improve slippage, we found that the surface on which the deposited film of the synthetic resin film is formed has a maximum height roughness of 0 (JIS B-0801). .8. It has been found that by roughening the surface so as to have a roughness of .mu.m or more, it is possible to reliably prevent the occurrence of the above-mentioned scratches and cracks. However, if the above-mentioned maximum height roughness exceeds 60% of the thickness of the synthetic resin film (or sheet) on which the vapor deposited film is formed, the strength of the synthetic resin film serving as the base material becomes poor, making it difficult to use for packaging, etc. It becomes unsuitable as a. For this reason, in the present invention, the rough surface formed on the vapor deposited film forming side of the synthetic resin film (or sheet) on which the vapor deposited film is formed has a maximum height roughness of O, a μm or more and The thickness was set to 60% or less of the film thickness. Furthermore, when a vapor deposited film is formed on such a roughened synthetic resin film,
Although the rough surface is slightly homogenized, a rough surface approximately corresponding to the roughness of the synthetic resin film is formed on the outer surface of the vapor-deposited film, and the slippage of the film winding surface is significantly improved. I take it. In addition, the above-mentioned slippage improvement effect due to surface roughening is sufficient if at least one of the vapor-deposited films that come into contact with the film during winding is exerted. It includes both those that have been roughened on one side and those that have been roughened on only one side.

尚ガスバリヤ−性を相乗的に高める為の他の蒸着層につ
いては、複層に形成される合成樹脂層の、  積層境界
面に設けることによって目的を達成することとした。
As for the other vapor deposited layers for synergistically increasing gas barrier properties, it was decided to achieve the objective by providing them on the laminated boundary surfaces of the synthetic resin layers formed in multiple layers.

加えて最表面に蒸着層を有する場合は、屈曲疲労等によ
り蒸着層が損傷を受けたり剥離することがあり、そうな
るとガスバリヤ−性が急激に悪くなる、という問題も生
じてくるが、前述の如く蒸着層を積層界面に形成したも
のであれは、当該両面側を合成樹脂製フィルム(又はシ
ート)で挟み込まれた状態となる為、使用時の屈曲疲労
等によってクラックや剥離を生ずる様な恐れもなく、耐
久性の優秀なガスバリヤ−性フィルム(又はシート)と
なる。
In addition, when a vapor-deposited layer is provided on the outermost surface, the vapor-deposited layer may be damaged or peeled off due to bending fatigue, etc., and this causes the problem that the gas barrier property deteriorates rapidly. If a vapor-deposited layer is formed at the laminated interface, both sides are sandwiched between synthetic resin films (or sheets), so there is a risk of cracking or peeling due to bending fatigue during use. This results in a gas barrier film (or sheet) with excellent durability.

本発明フィルムにおけるベースとなる合成樹脂フィルム
は金属蒸着層の支持基盤となるものであり、包装用途に
おいて必要と考えられる強度と柔軟性を保障するもので
あり、例えばポリエチレンテレフタレートやポリブチレ
ンテレフタレート等のポリエステル、ナイロン、ポリプ
ロピレンやポリエチレン等のポリオレフィン、エチレン
−酢酸ビニル共重合体、ポリエーテルスルホン、ポリイ
ミド、ふっ素樹脂、ポリスチレン、ポリビニルアルコー
ル、ポリ塩化ビニル、ポリ塩化ビニリデン、再生セルロ
ースの如く、従来から包装用として知られたすべての合
成樹脂を使用することができ、またこれらの樹脂フィル
ムは未延伸のままで使用してもよく或は1軸若しくは2
軸延伸したものであっても勿論かまわない。該樹脂フィ
ルム(又はシート)の肉厚は用途に応じて任意に決めれ
ばよいが、包装袋の様にフィルム状で使用する場合は2
〜500μm程度、また包装箱素材の様なシート状のも
のとする場合は100〜1000μm程度が一般的であ
る。
The synthetic resin film that is the base of the film of the present invention serves as a support base for the metal vapor deposited layer, and ensures the strength and flexibility considered necessary for packaging applications. Traditional packaging materials such as polyester, nylon, polyolefins such as polypropylene and polyethylene, ethylene-vinyl acetate copolymers, polyethersulfones, polyimides, fluororesins, polystyrene, polyvinyl alcohol, polyvinyl chloride, polyvinylidene chloride, and regenerated cellulose All synthetic resins known as
Of course, it may be axially stretched. The thickness of the resin film (or sheet) can be arbitrarily determined depending on the application, but when used in a film form such as a packaging bag, the thickness is 2.
The thickness is generally about 100 to 1000 .mu.m in the case of a sheet-like material such as a packaging box material.

一方蒸着用の金属としてはアルミニウム、亜鉛、銅、白
金、インジウム、スズ、金、銀、珪素等が例示され、ま
た金属化合物として酸化珪素等が挙げられ、その肉厚は
50〜2000mμ程度が最も一般的である。これらの
蒸着素材の種類は用途(包装内容物の種類等)に応じて
適宜選定すればよい。
On the other hand, examples of metals for vapor deposition include aluminum, zinc, copper, platinum, indium, tin, gold, silver, and silicon, and examples of metal compounds include silicon oxide. Common. The type of these vapor deposition materials may be appropriately selected depending on the application (type of packaged contents, etc.).

また本発明に係るフィルムの基本的な断面構造は第1図
(A)〜 (L)に暗示する通りであり[AI、A2は
合成樹脂層、B1.B2は蒸着層、Cは粗面化処理面、
Dは接着(ヒートシール材を含む)層を夫々示す]、接
着層りを介して積層された2枚の合成樹脂層A+ 、A
2  (AIとA2は同種であっても異種であってもよ
い)の一方又は両面に粗面化処理が施されている池内外
面の一方に蒸着層B、が形成され、且つ合成樹脂層A、
、A2の積層界面には接着層りを介して蒸着層B2  
(Bl 、B2は同種であっても異種であってもよい)
が形成されている。尚積層界面は平滑なものであっても
よいが、積層界面の片面又は両面に粗面化処理を施して
おけば層間接着力を一段と高めることが好ましい。第1
図(M)〜(0)は本発明の応用例を示したもので、3
枚の合成樹脂層A、〜As  (411以上であっても
勿論かまわない)を積層してなる少なくとも1つ(図で
は1又は2)の積層界面に蒸着層B、、B、を形成し、
最外面側の一方又は双方に粗面化処理を施した例を示し
ており、殊に第1図(0)に示す如く2っ(又は3以上
)の積層界面に蒸着層を形成すると合計3層(或はそれ
以上)の蒸着層が形成されることになり、これらの相乗
作用によってガスバリヤ−性を一段と高めることができ
る。
Further, the basic cross-sectional structure of the film according to the present invention is as implied in FIGS. 1(A) to 1(L) [AI, A2 are synthetic resin layers, B1. B2 is a vapor deposited layer, C is a roughened surface,
D indicates an adhesive layer (including a heat sealing material) respectively], two synthetic resin layers A+, A laminated with an adhesive layer interposed therebetween;
2 (AI and A2 may be of the same type or different types), a vapor deposited layer B is formed on one of the inner and outer surfaces of the pond, and the synthetic resin layer A ,
, A2 has a vapor deposited layer B2 on the laminated interface via an adhesive layer.
(Bl and B2 may be of the same type or different types)
is formed. Although the laminated interface may be smooth, it is preferable to roughen one or both sides of the laminated interface to further increase interlayer adhesion. 1st
Figures (M) to (0) show application examples of the present invention.
Forming a vapor deposited layer B, , B, on the laminated interface of at least one (1 or 2 in the figure) formed by laminating synthetic resin layers A, ~As (411 or more, of course),
This shows an example in which one or both of the outermost surfaces are subjected to surface roughening treatment. In particular, as shown in FIG. A layer (or more) of vapor deposited layers will be formed, and their synergistic effect can further enhance the gas barrier properties.

また本発明フィルムの表面には必要に応じて離形剤或は
粘着剤やヒートシーラー等を一部若しくは全面に付着さ
せておくこともでき、また使用に当たっては印刷を施す
ことも可能である。
Further, a release agent, an adhesive, a heat sealer, etc. may be applied to a part or the entire surface of the film of the present invention, if necessary, and printing may be applied to the film during use.

上述の如き本発明フィルムを製造する方法は色々考えら
れるが、工業的に最も有利なのは、粗面化処理面上又は
平滑面上に蒸着層の形成された2種の合成樹脂フィルム
(又はシート)を、蒸着層の一方が外面側に位置し、他
の蒸着層が積層界面にくる様に、且つ粗面化処理が最外
面の少なくとも一方に位置する様に積層する方法である
。例えば第3図(A) 、 (B)は本発明に係るガス
バリヤ−性フィルムの製法を暗示する説明図であり、第
3図(A)に示す如く1つの真空設備内で夫々の合成樹
脂フィルムAI  (又はA2)の片面に蒸着層Bl 
 (又はB2)を形成しておき、次いで第3図(B)に
示す如く常圧雰囲気下で蒸着層B1が外面側、蒸着層B
2が積層界面となる様に各フィルムA、、A2を積層さ
せる方法を採用すれば、比較的小規模な真空設備を用意
するだけで蒸着層B、、B2を有するフィルムを得るこ
とができる。この場合、合成樹脂フィルムの片面又は両
面(蒸着面、非蒸着面のどちらかでもよい)に粗面化処
理を施しておくべきことは当然である。しかも蒸着層B
、、B2を形成した後の各フィルムA、、A2の積層工
程では、必要に応じて該積層間へ他の合成樹脂フィルム
や蒸着膜等を挟み込んで第1図(E)〜 (F)に示し
た様な多層構造のフィルム(又はシート)を得ることも
容易である。
Various methods can be considered for producing the film of the present invention as described above, but the most industrially advantageous are two types of synthetic resin films (or sheets) in which a vapor deposited layer is formed on a roughened surface or a smooth surface. This is a method of stacking the vapor-deposited layers so that one of the vapor-deposited layers is located on the outer surface side, the other vapor-deposited layer is located at the lamination interface, and the roughening treatment is located on at least one of the outermost surfaces. For example, FIGS. 3(A) and 3(B) are explanatory diagrams suggesting the manufacturing method of the gas barrier film according to the present invention. As shown in FIG. 3(A), each synthetic resin film is manufactured in one vacuum equipment. Vapor deposited layer Bl on one side of AI (or A2)
(or B2), and then under normal pressure atmosphere as shown in FIG.
If a method is adopted in which the films A, A2 are laminated so that the laminated layers B, A2 are laminated so that the laminated interface is the laminated interface, a film having the vapor deposited layers B, B2 can be obtained by simply preparing a relatively small-scale vacuum facility. In this case, it is a matter of course that one or both surfaces (either the vapor-deposited surface or the non-vapor-deposited surface) of the synthetic resin film should be subjected to surface roughening treatment. Moreover, the vapor deposited layer B
In the lamination process of each film A,, A2 after forming B2, other synthetic resin films, vapor deposited films, etc. are inserted between the laminated layers as necessary, and the process shown in FIGS. 1(E) to (F) is performed. It is also easy to obtain a film (or sheet) with a multilayer structure as shown.

この様にして得られる本発明のガスバリヤ−性フィルム
(又はシート)は、前述の如く各種食品や医薬品、医療
器具等の柔軟包装材、或は箱状ボトルの如き硬質容器や
そのラミネート材等として幅広く利用することかできる
As mentioned above, the gas barrier film (or sheet) of the present invention obtained in this manner can be used as flexible packaging materials for various foods, medicines, medical instruments, etc., or as hard containers such as box-shaped bottles, and laminate materials thereof. It can be used widely.

[実施例] 実施例1 厚さ12μmの2軸延伸ナイロン−6(2酸化珪素0.
15重量%配合)の片面に1.1μmの粗面化処理を施
した後、この面に厚さ400mμのアルミニウム蒸着層
を形成し、該片面粗面化蒸着フィルムを第2図(B)に
示す方法に準じて、一方の蒸着層が外面側に、他方の蒸
着層が積層界面に夫々くる様に積層しく接着剤としては
インシアネート系接着剤を用いた)、ガスバリヤ−性フ
ィルムを得た。このフィルムを用いて製袋し、直径2.
8mmの球状粒子を充填して真空包装し、該充填袋の経
時的な硬さ変化によってガスバリヤ−性を評価した。ま
た比較の為片面蒸着フィルム単独で製袋し上記と同様に
してガスバリヤ−性を調べた。更に各々のフィルムを1
00回の屈曲処理に付し、処理前後における酸素透過」
を調べた。
[Examples] Example 1 Biaxially stretched nylon-6 with a thickness of 12 μm (silicon dioxide 0.
After carrying out a surface roughening treatment of 1.1 μm on one side of the 15 wt % composition), a 400 mμ thick aluminum vapor deposited layer was formed on this surface, and the single side roughened vapor deposited film was shown in Figure 2 (B). According to the method shown above, the films were laminated so that one vapor-deposited layer was on the outer surface and the other vapor-deposited layer was on the lamination interface, and an incyanate adhesive was used as the adhesive) to obtain a gas barrier film. . Bags are made using this film and have a diameter of 2.
The bag was filled with 8 mm spherical particles and vacuum packed, and the gas barrier property was evaluated based on the change in hardness of the filled bag over time. For comparison, bags were made using the single-sided vapor-deposited film alone and gas barrier properties were examined in the same manner as above. Furthermore, 1 of each film
Oxygen permeation before and after 00 bending treatments
I looked into it.

結果を第1表に示す。但し真空包装におけるガスバリヤ
−性の評価基準は下記の通りである。
The results are shown in Table 1. However, the evaluation criteria for gas barrier properties in vacuum packaging are as follows.

01手で触れると硬い板状感がある。01 It feels like a hard plate when you touch it with your hand.

○:手で触れると板状感をわずかに柔らげることができ
るか依然として硬い板状外観を呈している。
○: When touched with the hand, the plate-like appearance can be slightly softened or still exhibits a hard plate-like appearance.

△:手で触れると軟らかい状態となり、明らかに真空度
が低下している。
△: It is soft to the touch, and the degree of vacuum is clearly lowered.

×:袋の外部から粒状物をつかんで容易に動かすことか
でと、真空度が極端に低下している。
×: The degree of vacuum is extremely low due to the fact that particulate matter is easily moved by grabbing it from the outside of the bag.

即ち内部の真空度が保たれている限り粒状物は硬く締め
付けられており、袋は硬い板状に保たれるが、真空度が
低下すると空気の混入によって充填袋が軟らかくなり、
板状を保持し得なくなる。
In other words, as long as the internal vacuum level is maintained, the granules are tightly clamped and the bag remains in the form of a hard plate, but as the vacuum level decreases, the filled bag becomes soft due to the incorporation of air.
It becomes impossible to maintain the plate shape.

従ってこの感触によってガスバリヤ−性の良否を評価す
ることができる。
Therefore, the quality of the gas barrier properties can be evaluated based on this feel.

第   1   表 第1表からも明らかな様に片面蒸着フィルムでは、屈曲
処理前のガスバリヤ−性自体が劣悪であるばかりでなく
、屈曲処理によってガスバリヤ−性には更に悪化し、真
空包装状態は3力月で低下傾向を示し6力月で悪化して
しまう。これに対し本発明のフィルムでは、屈曲処理前
はもとより屈曲処理後でも優れたガスバリヤ−性を保持
しており、真空包装状態は6力月でも全く変わらず、1
年経過した時点でも良好な真空状態を保っている。
Table 1 As is clear from Table 1, the single-sided vapor deposited film not only has poor gas barrier properties before the bending process, but also deteriorates further due to the bending process, and the vacuum packaging state is 3. It shows a downward trend in the month of July and worsens in the month of June. In contrast, the film of the present invention maintains excellent gas barrier properties both before and after the bending process, and the vacuum packaging condition remains unchanged even after 6 months.
It maintains a good vacuum condition even after many years.

尚上記フィルムは何れも片面側が合成樹脂層のままで残
されており且つ外面の一方に粗面化処理が施されている
ので巻回時における滑りは非常に良好であり、ブロッキ
ングや°゛しわ°°、クラック等は一切生じることがな
かった。
All of the above films have a synthetic resin layer left on one side and a roughening treatment on one of the outer surfaces, so they slide very well during winding and prevent blocking and wrinkles. °°, cracks, etc. did not occur at all.

[発明の効果] 本発明は以上の様に構成されており、複層合成樹脂フィ
ルムの一方の外面と積層界面にIN以上の金属又は金属
化合物蒸着層を形成することによってガスバリヤ−性を
飛躍的に高めることかでき、内容物の保存日数を大幅に
延長することができる。しかもこの蒸着フィルムは蒸着
層の少なくとも1つが積層界面に位置しているので、屈
曲力を受けた場合でも高レベルのガスバリヤ−性を維持
することができ、更には金属蒸着層同士が直接接触する
ことがなく且つ少なくとも一方の外面が粗面化されてい
るので巻回時等における滑りも良好に保たれ、ブロッキ
ングやクラック、°°シわ′°等を生じることもない。
[Effects of the Invention] The present invention is configured as described above, and by forming a metal or metal compound vapor deposition layer of IN or higher on one outer surface of the multilayer synthetic resin film and the lamination interface, gas barrier properties can be dramatically improved. This can significantly extend the shelf life of the contents. Moreover, this vapor-deposited film has at least one vapor-deposited layer located at the laminated interface, so it can maintain a high level of gas barrier property even when subjected to bending force, and furthermore, the metal vapor-deposited layers are in direct contact with each other. Since at least one outer surface is roughened, slippage during winding is maintained well, and blocking, cracking, wrinkles, etc. do not occur.

また本発明の製造方法を採用すれば、比較的小さな蒸着
処理設備によってガスバリヤ−性の優れたフィルムを得
ることかでき、製造設備費を加味した生産コストを安価
に抑えることができる。
Further, by employing the manufacturing method of the present invention, a film with excellent gas barrier properties can be obtained using relatively small vapor deposition processing equipment, and the production cost including manufacturing equipment costs can be kept low.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(八)〜 (0)は本発明のガスバリヤ−性フィ
ルムを例示する断面模式図、第2図(A) 、 (B)
は°′しわ°゛の発生状況を示す断面説明図、第3図(
A) 、 (B)は本発明の製造方法を例示する概略説
明図である。 A、A、〜A3・・・合成樹脂層(フィルム)18゛ 81〜B3・・・金属又は金属化合物蒸着層り、D、、
D2・・・接着(又はヒートシール)層C・・・粗面化
処理面
Figures 1 (8) to (0) are schematic cross-sectional views illustrating the gas barrier film of the present invention, and Figures 2 (A) and (B)
Figure 3 is a cross-sectional explanatory diagram showing the occurrence of wrinkles.
A) and (B) are schematic explanatory diagrams illustrating the manufacturing method of the present invention. A, A, ~A3...Synthetic resin layer (film) 18゛81~B3...Metal or metal compound vapor deposited layer, D...
D2... Adhesive (or heat seal) layer C... Roughened surface

Claims (2)

【特許請求の範囲】[Claims] (1)少なくとも一方の外面が、最大高さ粗さが0.8
μm以上で且つ外面構成フィルム又はシートの厚さの6
0%以下である粗面で形成された複層の合成樹脂製フィ
ルム又はシートの上記両外面のうちいずれか一方の外面
と1以上の積層界面に金属又は金属化合物の蒸着層が形
成されたものであることを特徴とする複層ガスバリヤー
性フィルム又はシート
(1) At least one outer surface has a maximum height roughness of 0.8
6 μm or more and the thickness of the outer surface constituent film or sheet
A multilayer synthetic resin film or sheet formed with a rough surface of 0% or less, in which a vapor-deposited layer of a metal or metal compound is formed on either one of the above two outer surfaces and one or more laminated interfaces. A multilayer gas barrier film or sheet characterized by
(2)最大高さ粗さが0.8μm以上で且つフィルム又
はシートの厚さの60%以下である粗面上に金属又は金
属化合物の第1蒸着層を有する合成樹脂製フィルム又は
シートと、金属又は金属化合物の第2蒸着層が形成され
た合成樹脂製フィルム又はシートを、前記第1蒸着層が
表面側に、前記第2蒸着層が積層界面にくる様に積層す
ることを特徴とする複層ガスバリヤー性フィルム又はシ
ートの製造方法。
(2) a synthetic resin film or sheet having a first vapor-deposited layer of a metal or metal compound on a rough surface having a maximum height roughness of 0.8 μm or more and 60% or less of the thickness of the film or sheet; A synthetic resin film or sheet on which a second vapor-deposited layer of metal or metal compound is formed is laminated such that the first vapor-deposited layer is on the surface side and the second vapor-deposited layer is on the lamination interface. A method for producing a multilayer gas barrier film or sheet.
JP29832985A 1985-12-28 1985-12-28 Double-layer gas-barriering film or sheet and manufacture thereof Granted JPS62156942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29832985A JPS62156942A (en) 1985-12-28 1985-12-28 Double-layer gas-barriering film or sheet and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29832985A JPS62156942A (en) 1985-12-28 1985-12-28 Double-layer gas-barriering film or sheet and manufacture thereof

Publications (2)

Publication Number Publication Date
JPS62156942A true JPS62156942A (en) 1987-07-11
JPH0535067B2 JPH0535067B2 (en) 1993-05-25

Family

ID=17858249

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29832985A Granted JPS62156942A (en) 1985-12-28 1985-12-28 Double-layer gas-barriering film or sheet and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS62156942A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073061A3 (en) * 1999-03-12 2001-06-28 Rexam Inc Bright metallized film laminate
EP1384571A1 (en) * 2001-04-09 2004-01-28 Toppan Printing Co., Ltd. Laminated body

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073061A3 (en) * 1999-03-12 2001-06-28 Rexam Inc Bright metallized film laminate
US6287672B1 (en) 1999-03-12 2001-09-11 Rexam, Inc. Bright metallized film laminate
US6565955B2 (en) 1999-03-12 2003-05-20 Soliant Llc Bright indium-metallized formable film laminate
EP1384571A1 (en) * 2001-04-09 2004-01-28 Toppan Printing Co., Ltd. Laminated body
EP1384571A4 (en) * 2001-04-09 2004-08-25 Toppan Printing Co Ltd Laminated body
US7288313B2 (en) 2001-04-09 2007-10-30 Toppan Printing Co., Ltd. Laminated body

Also Published As

Publication number Publication date
JPH0535067B2 (en) 1993-05-25

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