JPS62156943A - Evaporated-layer built-in type double-layer gas-barriering film or sheet and manufacture thereof - Google Patents

Evaporated-layer built-in type double-layer gas-barriering film or sheet and manufacture thereof

Info

Publication number
JPS62156943A
JPS62156943A JP29833085A JP29833085A JPS62156943A JP S62156943 A JPS62156943 A JP S62156943A JP 29833085 A JP29833085 A JP 29833085A JP 29833085 A JP29833085 A JP 29833085A JP S62156943 A JPS62156943 A JP S62156943A
Authority
JP
Japan
Prior art keywords
film
vapor
layer
deposited
sheet
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
Application number
JP29833085A
Other languages
Japanese (ja)
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 JP29833085A priority Critical patent/JPS62156943A/en
Publication of JPS62156943A publication Critical patent/JPS62156943A/en
Pending legal-status Critical Current

Links

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】 [産業上の利用分野] 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
が良好で且つ耐久性及び取扱性の優れたフィルム又はシ
ート、及びその製造方法に関するものである。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to packaging films for fresh foods, processed foods, pharmaceuticals, medical devices, etc. The present invention relates to a film or sheet that has good moisture-proofing properties, light-shielding properties, etc., and excellent durability and handleability, and a method for producing the same.

[従来の技術] 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きている。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鮒る。
[Conventional technology] 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. It's coming. 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 moisture from permeating, which prevents dry items from deteriorating due to moisture absorption, and moisture-containing items from moisture absorption. Deterioration and solidification due to volatilization are prevented, and the fresh flavor retained at the time of packaging is maintained 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か必要とされる医
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 packaging films for 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
期して多くの研究が行なわれているが、上記特性の優れ
たものとして現在量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5
i02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 from this point of view, but polyesters, polyolefins, polyvinylidene chloride, etc. are currently widely used as having excellent properties as described above. One side of the synthetic resin film is coated with metal such as aluminum or 5
This is a vapor-deposited film on which a metal compound such as i02 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
とができる。
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.

[発明が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
しくなり需要者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きている。
[Problems 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 consumers become 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 these requirements.

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、複層の合成樹脂製フィルム又はシートの1以上
の積層界面に、総計で2層以上の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、金属又は金属化合物の蒸着
層を有する合成樹脂製フィルム又はシートと、金属又は
金属化合物の蒸着層を有する合成樹脂フィルム又はシー
トを総計で2層以上の金属又は金属化合物の蒸着層が1
以上の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 gas barrier film (or sheet) according to the present invention has a structure in which a total of two or more metal layers are formed at one or more laminated interfaces of the multilayer synthetic resin film or sheet. or a vapor-deposited layer of a metal compound, and the manufacturing method according to the present invention includes a synthetic resin film or sheet having a vapor-deposited layer of a metal or a metal compound, and a metal or metal compound vapor-deposited layer. Synthetic resin film or sheet having vapor-deposited layers of 2 or more metal or metal compound vapor-deposited layers in total is 1
The gist of this is that the layers are laminated so as to be located at the lamination interface as described above.

[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、等の問題が生じることを知った。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 causes 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.

ところが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
を有しているか、蒸着すべきフィルム表面か両方共平滑
になっているものを用いたとぎは次の様な問題を生じる
ことが明らかとなった。
However, as mentioned above, a film with vapor-deposited layers on both sides has a much better gas barrier property than a single-sided vapor-deposited film, or if both surfaces of the film to be vapor-deposited are smooth. It has become clear that the following problems arise.

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か非常に広くなり、
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)、例えは第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@縫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
が重ねられてくると、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 a double-sided vapor deposited film, if both film surfaces are smooth, the vapor deposited surface 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 contact surface has poor slippage (as mentioned above, the microscopic contact area is large), air is once trapped between the double-sided vapor deposited films F and F, as shown in FIG. 2 (A). The function of the vapor deposition surface sliding open and discharging air cannot be expected, and the film F remains in a partially swollen state and becomes stable. In this state, the next winding layer G is applied from the outer circumferential side.
When the films F and G are stacked one on top of the other, the film F is bent while leaving air inside, and the film G is stacked on top of it, so wrinkles 1 are formed in the films F and G as shown in FIG. 2(B). 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、両面を合成樹脂のままで残し蒸着層は積層界
面に存在させる構成とすれば巻回時における蒸着層同士
の直接的な接触が全く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、前述の如く巻回工程で空気が巻ぎ込
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がとれいに巻き重ねられ、前記第2
図(B)に示した様な°゛しわ°°を全く生じなくなる
ことが明らかとなった。そしてガスバリヤ−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少なくとも2層以上設けるこ
とによって目的を達成することとした。
Therefore, as a result of further research to improve this problem, we found that if both sides were left as synthetic resin and the vapor deposited layer was placed at the laminated interface, direct contact between the vapor deposited layers during winding could be avoided. Not only is blocking completely eliminated, but also the slippage between the films during winding is maintained well, and as mentioned above, even if air is drawn in during the winding process, it is removed by the winding pressure of the next layer. is pushed out toward the side edges, and the films F and G are neatly wound and overlapped, and the second
It has become clear that wrinkles as shown in Figure (B) do not occur at all. As for the other vapor deposited layers for synergistically increasing the gas barrier properties, it was decided to achieve the objective by providing at least two or more layers on the laminated boundary surface of the synthetic resin layers formed in multiple layers.

加えて最外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2以上の蒸着層を積層界面に形
成したものであれば、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., which causes the problem that the gas barrier properties deteriorate rapidly, but as mentioned above, If two or more vapor-deposited layers are formed at the laminated interface, both sides will be sandwiched between synthetic resin films (or sheets), which may cause cracks or peeling due to bending fatigue during use. The result is a gas barrier film (or sheet) with excellent durability and no risk of damage.

尚最外面側の表面性状については一切制限されないが、
両件面の少なくとも一方を粗面化処理してやれば、巻回
時におけるミクロ的な接触面積が少なくなって滑りを一
段と改善することができるので好ましい。この様な滑り
改善効果は最外面の最大高さ粗さくJIS B 060
1)を0.8μm程度以上とすることによって有効に発
揮されるが、最大高さ粗さが粗面化処理フィルムの肉厚
の60%を超えるとフィルム強度が乏しくなるので、6
0%を超えない範囲で粗面化すべ鮒である。一方最外面
を平滑面(上記最大高さ粗さが0.8μm未満のもの)
としたものは優れた光沢を示し、且つ異物の付着も抑え
られるので衛生的な複層フィルムとなる。
Although there are no restrictions on the surface quality of the outermost surface,
It is preferable to roughen at least one of the two surfaces, since this reduces the microscopic contact area during winding and further improves slippage. This sliding improvement effect is achieved by increasing the maximum height roughness of the outermost surface according to JIS B 060.
However, if the maximum height roughness exceeds 60% of the thickness of the roughened film, the film strength will be poor.
The surface of carp should be roughened within a range not exceeding 0%. On the other hand, the outermost surface is a smooth surface (the maximum height roughness mentioned above is less than 0.8 μm)
The resulting film exhibits excellent gloss and prevents the adhesion of foreign matter, resulting in a hygienic multilayer film.

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、また包装箱素材の根なシート状のも
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 for a packaging box.

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
(^)に暗示する通りであり[AI 、A2は合成樹脂
層、B、、B2は蒸着層、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A1.A2(AI とA2は同種であ)て
も異種であってもよい)の平滑な両外面の一方に蒸着層
B1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
。また第1図(B)〜 (J)では合成樹脂層A1゜A
2の積層界面の一方又は双方に粗面化処理Cを施し、層
間接着力を高め、或は両外面の一方又は双方を粗面化処
理して滑りを一段と高めた例を示している。更に第1図
(K) 、 (R)は、3〜4枚の合成樹脂層A1〜A
4 (5層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2
以上の蒸着層B、〜B4を形成した例を示しており、殊
に第1図(M)。
In addition, the basic cross-sectional structure of the film according to the present invention is as implied in Figure 1 (^) [AI, A2 is a synthetic resin layer, B, B2 is a vapor deposited layer, D is an adhesive (heat sealing material is not used)] 2 synthetic resin layers laminated via an adhesive layer A1. A vapor deposited layer B1 is formed on one of both smooth outer surfaces of A2 (AI and A2 may be of the same type or different types), and an adhesive layer is formed on the laminated interface of the synthetic resin layers A and A2. A vapor deposited layer B2 (Bl and B2 may be of the same type or different types) is formed through the layer. In addition, in Fig. 1 (B) to (J), the synthetic resin layer A1゜A
This shows an example in which one or both of the laminated interfaces of No. 2 is subjected to surface roughening treatment C to increase interlayer adhesion, or one or both of the outer surfaces are roughened to further enhance slippage. Furthermore, FIGS. 1(K) and 1(R) show three to four synthetic resin layers A1 to A.
At least one (1 or 2 in the figure) laminated interface formed by laminating 4 (of course, 5 or more layers) has 2 layers.
An example in which the above vapor deposited layers B and B4 are formed is shown, especially FIG. 1(M).

(N)に示す如く積層界面に蒸着層を形成すると合計3
層(或はそれ以上)の蒸着層を形成すれば、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。
When a vapor deposited layer is formed on the laminated interface as shown in (N), a total of 3
By forming a layer (or more) of vapor deposited layers, the gas barrier properties can be further improved by their synergistic effect.

また本発明フィルムの表面には必要に応じて訓形剤或は
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。
Furthermore, a shaping agent, an adhesive, a heat sealer, etc. can be applied to a part or the entire surface of the film of the present invention, if necessary, and printing can also be applied to the film when it is used.

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、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、
蒸着層の両方が内面側にくる様に積層する方法である。
Various methods can be considered for producing the film of the present invention as described above, but the most industrially advantageous method is to produce two types of synthetic resin films (or sheets) each having a vapor-deposited layer formed on a smooth surface.
This is a method of stacking the vapor deposited layers so that both are on the inner surface.

例えば第3図(A)。For example, FIG. 3(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(八)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A
2)の片面に蒸着層Bl  (又はB2)を形成してお
ぎ、次いで第3図(B)に示す如く常圧τ囲気下で蒸着
層Bl+  B2が積層界面側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Bl、B2を積層
界面に有するフィルムを得ることができる。しかも蒸着
層Bl、B2を形成した後の各フィルムAI、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(に)〜 (R)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。
(B) is an explanatory diagram hinting at the manufacturing method of the gas barrier film according to the present invention, in which each synthetic resin film AI (or A
2) A vapor deposited layer Bl (or B2) is formed on one side of the film A, and then, as shown in FIG.
If a method of laminating B1 and A2 is adopted, a film having vapor deposited layers B1 and B2 at the lamination interface can be obtained by simply preparing a relatively small-scale vacuum facility. Moreover, in the lamination step of each film AI, A2 after forming the vapor deposited layers Bl, B2, other synthetic resin films, vapor deposited films, etc. may be inserted between the laminated layers as necessary. It is also easy to obtain a film (or sheet) with a multilayer structure as shown in ).

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ができる
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 両面の平滑な厚さ12μmのポリエチレンテレフタレー
トフィルム(2軸延伸)の片面に厚さ500mμmのア
ルミニウム蒸着層を形成し、片面蒸着フィルムを製造し
た。該片面蒸着フィルムの金属蒸着面にコロナ放電処理
を施し、その2枚を蒸着層を内面側にしてポリエチレン
(厚さ12μm)サンドラミネーションにより貼り合わ
せ、積層界面に2つの蒸着層を有する複層ガスバリヤ−
性フィルムを得た。
[Examples] Example 1 A single-sided vapor-deposited film was produced by forming an aluminum vapor-deposited layer with a thickness of 500 μm on one side of a polyethylene terephthalate film (biaxially stretched) with a thickness of 12 μm and smooth on both sides. The metal-deposited surface of the single-sided vapor-deposited film is subjected to corona discharge treatment, and the two sheets are laminated together using polyethylene (thickness: 12 μm) with the vapor-deposited layer on the inside surface by sand lamination to form a multilayer gas barrier having two vapor-deposited layers at the laminated interface. −
A sex film was obtained.

このフィルムを袋状に成形して酸素バリヤー性を調べた
ところ、酸素透過量は0.18cc/n+”  ・24
hr−atmと非常に小さな値が得られた。またこのフ
ィルムを100回の屈曲処理に付した後同様にして酸素
バリヤー性を調べたところ、酸素透過■は0J6cc/
m2・24hr・atmに増加したたけであった。
When this film was molded into a bag shape and its oxygen barrier properties were examined, the oxygen permeation rate was 0.18cc/n+"・24
A very small value of hr-atm was obtained. In addition, when this film was subjected to bending treatment 100 times and the oxygen barrier property was examined in the same manner, the oxygen permeation (■) was 0J6cc/
The amount increased to m2/24hr/atm.

これに対し積層前の片面蒸着フィルムを用いて同様の試
験を行なったところ、屈曲処理前でも酸素透過量は4.
5cc/m2・24hr ・atmと本発明フィルムの
25倍の酸素が透過し、また屈曲処理後の酸素透過Ji
24.5cc/m2・24hr−atmとなりガスバリ
ヤ−性フィルムとしての機能を実質的に発揮し得ないも
のとなった。
On the other hand, when a similar test was conducted using a single-sided vapor-deposited film before lamination, the amount of oxygen permeation was 4.0% even before the bending treatment.
5cc/m2・24hr ・25 times more oxygen permeates than atm and the film of the present invention, and oxygen permeates Ji after bending treatment.
24.5 cc/m<2>·24 hr-atm, and could not substantially exhibit its function as a gas barrier film.

尚」二記複層フィルム(実施例)は両外面共台成樹脂で
構成されている為巻回時の滑りは良好であり、ブロッキ
ング、クラック、°′シわ゛等の発生は全く認められな
かった。
In addition, since both outer surfaces of the multilayer film (Example) described in Section 2 are made of synthetic resin, slippage during winding is good, and no occurrence of blocking, cracking, wrinkling, etc. was observed. There wasn't.

実施例2 両面の平滑な厚さ18μmのポリエチレンテレフタレー
トフィルム(2軸延伸)の片面に厚さ600mμmのア
ルミラム蒸着層を形成し、片面蒸着フィルムを製造した
。該片面蒸着フィルム2枚を、蒸着面を内側にしポリウ
レタン系接着剤(1,5g/m2)を用いてドライラミ
ネートし複層フィルムを得た。
Example 2 A single-sided vapor-deposited film was produced by forming an aluminum laminate layer with a thickness of 600 μm on one side of a polyethylene terephthalate film (biaxially stretched) with a thickness of 18 μm and smooth on both sides. Two single-sided vapor-deposited films were dry-laminated with the vapor-deposited side inside using a polyurethane adhesive (1.5 g/m2) to obtain a multilayer film.

該複層フィルムの酸素バリヤー性を実施例1と同様にし
て調べたところ、屈曲処理前の酸素透過量は0.093
 cc/m2・24h+” atm 、屈曲処理後は0
.13cc/m2・24hr−atmと何れも非常に小
さな値を示した。
When the oxygen barrier properties of the multilayer film were examined in the same manner as in Example 1, the oxygen permeation rate before bending treatment was 0.093.
cc/m2・24h+”atm, 0 after bending treatment
.. Both showed very small values of 13 cc/m2 and 24 hr-atm.

一方積層前の片面蒸着フィルム(比較材)を用いて同様
の試験を行なったところ、屈曲処理前の酸素透過量は3
.7 cc/m2−24hr−atmと非常に高い値を
示し、且つ屈曲処理後の酸素透過量は14.9cc/m
2・24hr−atmにまで高まりガスバリヤ−性を実
質的に喪失することが確認された。
On the other hand, when a similar test was conducted using a single-sided vapor-deposited film (comparative material) before lamination, the amount of oxygen permeation before bending treatment was 3.
.. It showed a very high value of 7 cc/m2-24hr-atm, and the oxygen permeation amount after bending treatment was 14.9 cc/m
It was confirmed that the gas barrier properties were substantially lost as the pressure increased to 2.24 hr-atm.

また本発明の複層フィルムは滑りも良く、巻取り工程等
でブロッキング、クラック、°′シわ°等を生じること
もなかった。
Furthermore, the multilayer film of the present invention had good sliding properties and did not cause blocking, cracking, wrinkles, etc. during the winding process.

実施例3 両面の平滑な2軸延伸ポリエチレンテレフタレートフィ
ルム(50μm)の片面に厚さ700mμmのアルミニ
ウム蒸着層を形成し、片面蒸着フィルムを得た。この片
面蒸着フィルム2枚を、蒸着層を内側にして積層(ポリ
ウレタン系接着剤使用)し、更に片面側にはポリエチレ
ンシーラントを、又他の面にはポリエチレンシーラント
を介してクラフト紙を夫々積層圧着し複層シートを得た
。この複層シートを用いて箱状容器を作製し酸素バリヤ
ー性を調べたところ、酸素透過量は004cc/m2・
24hr−atmと非常に小さな値を示した。
Example 3 An aluminum vapor deposited layer having a thickness of 700 mμm was formed on one side of a biaxially stretched polyethylene terephthalate film (50 μm) having smooth surfaces on both sides to obtain a single side vapor deposited film. These two single-sided vapor-deposited films are laminated (using polyurethane adhesive) with the vapor-deposited layer inside, and then polyethylene sealant is applied to one side, and kraft paper is laminated and pressure-bonded via the polyethylene sealant to the other side. A multilayer sheet was obtained. When a box-shaped container was made using this multilayer sheet and its oxygen barrier properties were examined, the oxygen permeation rate was 0.04 cc/m2.
It showed a very small value of 24 hr-atm.

該容器を殺菌処理した後オレンジジュースを封入し保存
安定性を調べたところ、1年経過後も変質は認められな
かった。
After sterilizing the container, orange juice was sealed in the container and the storage stability was examined, and no deterioration was observed even after one year.

一方上記片面蒸着フィルムの非蒸着面側にポリエチレン
シーラントを介してクラフト紙を貼合して片面蒸着複層
シートとし、上記と同様にして酸素バリヤー性を調べた
ところ、酸素透過量は2.1cc/+n244hr−a
tmと本発明シートの実に50倍以上の酸素が透過した
。またこのシートで形成した箱状容器を殺菌してオレン
ジジュースを封入し保存安定性を調べたところ、2か月
で風味が悪化し異臭を発することが確認された。
On the other hand, kraft paper was bonded to the non-evaporated side of the single-sided vapor deposited film via a polyethylene sealant to form a single-sided vapor deposited multilayer sheet, and the oxygen barrier property was examined in the same manner as above, and the oxygen permeation amount was 2.1 cc. /+n244hr-a
In fact, more than 50 times as much oxygen permeated through the sheet as compared to the sheet of the present invention. Furthermore, when a box-shaped container formed from this sheet was sterilized and orange juice was sealed in it to examine its storage stability, it was confirmed that the flavor deteriorated and a strange odor was emitted within two months.

実施例4 両面の平滑な厚さ20μmの2軸延伸ポリプロピレンの
片面に厚さ450mμmのアルミニウム蒸着層を形成し
片面蒸着フィルムを得た。該フィルム2枚を、蒸着層が
内側へくる様にポリイソシアネート系接着剤(1,2g
/m’)を介してドライラミネート加工し複層フィルム
を得た。該複層フィルムの酸素透過量は1.4 cc/
m2・24h+”atmであった。
Example 4 A single-sided vapor-deposited film was obtained by forming an aluminum vapor-deposited layer with a thickness of 450 μm on one side of biaxially stretched polypropylene with a thickness of 20 μm and smooth on both sides. Place the two films together with polyisocyanate adhesive (1.2 g) so that the vapor deposition layer is on the inside.
/m') to obtain a multilayer film. The oxygen permeation rate of the multilayer film is 1.4 cc/
It was m2・24h+”atm.

一方積層前の前記片面蒸着フィルムの酸素透過量は12
.9cc/m”・24hr−atmでを示し、満足のい
くゲスバリヤー性を得ることはできなかった。
On the other hand, the oxygen permeation rate of the single-sided vapor deposited film before lamination is 12
.. 9 cc/m''・24 hr-atm, and it was not possible to obtain a satisfactory gas barrier property.

実施例5 両面の平滑な厚さ12μmの2軸延伸ナイロン−6フイ
ルム(2酸化珪素0.15重量%配合)の片面に、厚さ
400mμmのアルミニウム蒸着層を形成し片面蒸着フ
ィルムを得た。この蒸着フィルム2枚を蒸着層の一方が
外面側に、また他方の蒸着層が積層界面にくる様にイソ
シアネート系接着剤を介して積層圧着し、更に非蒸着層
側にはイソシアネート系接着剤を介して厚さ50μmの
ポリエチレンフィルムを、又蒸着層側にはイソシアネー
ト系接着剤及び印刷インキを介して厚さ9μmのポリエ
ステル2軸延伸フイルムを夫々貼り合せ積層フィルムを
得た。
Example 5 A 400 mm thick aluminum vapor deposited layer was formed on one side of a 12 μm thick biaxially stretched nylon-6 film (containing 0.15% by weight of silicon dioxide) with smooth surfaces on both sides to obtain a single side vapor deposited film. These two vapor-deposited films are laminated and pressure-bonded using an isocyanate adhesive so that one of the vapor-deposited layers is on the outer surface and the other vapor-deposited layer is on the lamination interface, and an isocyanate-based adhesive is further applied on the non-evaporated layer side. A polyethylene film with a thickness of 50 μm was laminated on the vapor deposition layer side, and a biaxially stretched polyester film with a thickness of 9 μm was laminated on the vapor deposition layer side with an isocyanate adhesive and printing ink interposed therebetween to obtain a laminated film.

結果を第1表に示す。但し真空包装におけるカスバリヤ
ー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 Feels like a hard plate when touched.

08手で触れると板状感をわずかに柔らげることができ
るが依然として硬い板状外観を呈している。
08 When touched with the hand, the plate-like appearance can be slightly softened, but it still has 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
か低下している。
△: It is soft to the touch, and the degree of vacuum has obviously decreased.

×;袋の外部から粒状物をつかんで容易に動かすことが
でき、真空度が極端に低下している。
×: Particulate matter could be easily grabbed and moved from the outside of the bag, and the degree of vacuum was extremely low.

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< ft
す、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 is kept in a hard plate shape, but as the vacuum level decreases, the filled bag becomes soft due to the incorporation of air.
It becomes impossible to hold the plate shape.

従ってこの感触によってガスバリヤ−性の良否を第  
 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−性向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。
Therefore, you can determine the quality of the gas barrier property by this feeling.
1 As is clear from Table 1, the single-sided vapor deposited film not only has poor gas barrier properties before bending treatment, but also deteriorates further in gas barrier properties after bending treatment.
The vacuum packaging condition shows a downward trend in the 3rd month and worsens in the 6th month. On the other hand, 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.
Even after one year, it has maintained a good vacuum condition.

尚上記フィルムは両面側が合成樹脂層のままで残されて
いる為巻回時における滑りは良好であり、ブロッキング
や′°シわ°°、クラック等は一切生じることはなかっ
た。
Since the above film had synthetic resin layers on both sides, it had good slippage during winding, and no blocking, wrinkles, cracks, etc. occurred.

[発明の効果] 本発明は以上の様に構成されており、複合合成樹脂フィ
ルムの積層界面に2層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
ることができ、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か何
れも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−性を維持することかでき、
更には金属蒸着層同士が直接接触することが全くないの
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。また本発
明の製造方法を採用すれは、比較的小さな蒸着処理設備
によって蒸着層内蔵型のフィルムを得ることができ、製
造設備費を加味した生産コストを安価に抑えることかで
きる。
[Effects of the Invention] The present invention is configured as described above, and gas barrier properties can be dramatically improved by forming two or more metal or metal compound vapor-deposited layers on the laminated interface of a composite synthetic resin film. This can significantly extend the shelf life of the contents. Moreover, since the vapor deposited film is located at the laminated interface, it is possible to maintain a high level of gas barrier property even when subjected to bending force.
Furthermore, since the metal vapor deposited layers never come into direct contact with each other, good slippage is maintained during winding, and blocking, cracking, wrinkles, etc. do not occur. Further, by employing the manufacturing method of the present invention, a film with a built-in vapor deposition layer can be obtained using relatively small vapor deposition processing equipment, and the production cost including the manufacturing equipment cost can be kept low.

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

第1図(八)〜 (R)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°シわ°″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、〜A4・・・合成樹脂層(フィルム)81〜B
4・・・金属又は金属化合物蒸着層り、、D2・・・接
着(又はヒートシール)層C・・・粗面化処理面 区 管鴫− 第1図 し                       し
第2図 (A) ヒ 第3図 (A)
FIGS. 1(8) to (R) are schematic cross-sectional views illustrating the gas barrier film of the present invention, and FIGS. 2(A) and (B)
is a cross-sectional explanatory diagram showing the occurrence of wrinkles, Figure 3 (A
) and (B) are schematic explanatory diagrams illustrating the manufacturing method of the present invention. A, A, ~A4...Synthetic resin layer (film) 81~B
4...Metal or metal compound vapor deposited layer, D2...Adhesive (or heat seal) layer C...Roughened surface section - Figure 1 and Figure 2 (A) Figure 3 (A)

Claims (2)

【特許請求の範囲】[Claims] (1)複層の合成樹脂製フィルム又はシートの1以上の
積層界面に、総計で2層以上の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蒸着層内
蔵型の複層ガスバリヤー性フィルム又はシート。
(1) A vapor-deposited layer built-in type, characterized in that a total of two or more vapor-deposited layers of metal or metal compound are formed on one or more laminated interfaces of a multilayer synthetic resin film or sheet. Multilayer gas barrier film or sheet.
(2)金属又は金属化合物の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蒸着層を
有する合成樹脂フィルム又はシートを総計で2層以上の
金属又は金属化合物の蒸着層が1以上の積層界面にくる
様に積層することを特徴とする蒸着層内蔵型の複層ガス
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 vapor-deposited layer of a metal or metal compound, and a synthetic resin film or sheet having a vapor-deposited layer of a metal or metal compound, in total 2 or more layers of a vapor-deposited metal or metal compound in one layer. A method for producing a multilayer gas barrier film or sheet with a built-in vapor deposited layer, characterized by laminating the layers so that they are located at the interface between the layers.
JP29833085A 1985-12-28 1985-12-28 Evaporated-layer built-in type double-layer gas-barriering film or sheet and manufacture thereof Pending JPS62156943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29833085A JPS62156943A (en) 1985-12-28 1985-12-28 Evaporated-layer built-in type double-layer gas-barriering film or sheet and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29833085A JPS62156943A (en) 1985-12-28 1985-12-28 Evaporated-layer built-in type double-layer gas-barriering film or sheet and manufacture thereof

Publications (1)

Publication Number Publication Date
JPS62156943A true JPS62156943A (en) 1987-07-11

Family

ID=17858263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29833085A Pending JPS62156943A (en) 1985-12-28 1985-12-28 Evaporated-layer built-in type double-layer gas-barriering film or sheet and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS62156943A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084356A (en) * 1990-04-20 1992-01-28 E. I. Du Pont De Nemours And Company Film coated with glass barrier layer with metal dopant
US5085904A (en) * 1990-04-20 1992-02-04 E. I. Du Pont De Nemours And Company Barrier materials useful for packaging
US5168541A (en) * 1990-04-20 1992-12-01 E. I. Du Pont De Nemours And Company Moisture sealing of optical waveguide devices with doped silicon dioxide having a silicon monoxide undercoat
US5279853A (en) * 1990-12-24 1994-01-18 Istituto Guido Donegani S.P.A. Process for coating, with inorganic films, the surface of bodies fabricated from polymeric materials
US5523124A (en) * 1992-06-17 1996-06-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'expoloitation Des Procedes Georges Claude Process for producing a silicon oxide deposit on the surface of a metallic or metallized polymer substrate using corona discharge at pressures up to approximately atmospheric
JP2001171035A (en) * 1999-12-17 2001-06-26 Dainippon Printing Co Ltd Laminated material

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842027A (en) * 1981-09-04 1983-03-11 Seiko Epson Corp Production for liquid crystal display device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5842027A (en) * 1981-09-04 1983-03-11 Seiko Epson Corp Production for liquid crystal display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5084356A (en) * 1990-04-20 1992-01-28 E. I. Du Pont De Nemours And Company Film coated with glass barrier layer with metal dopant
US5085904A (en) * 1990-04-20 1992-02-04 E. I. Du Pont De Nemours And Company Barrier materials useful for packaging
US5168541A (en) * 1990-04-20 1992-12-01 E. I. Du Pont De Nemours And Company Moisture sealing of optical waveguide devices with doped silicon dioxide having a silicon monoxide undercoat
US5279853A (en) * 1990-12-24 1994-01-18 Istituto Guido Donegani S.P.A. Process for coating, with inorganic films, the surface of bodies fabricated from polymeric materials
US5523124A (en) * 1992-06-17 1996-06-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'expoloitation Des Procedes Georges Claude Process for producing a silicon oxide deposit on the surface of a metallic or metallized polymer substrate using corona discharge at pressures up to approximately atmospheric
JP2001171035A (en) * 1999-12-17 2001-06-26 Dainippon Printing Co Ltd Laminated material

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