JPH0468332B2 - - Google Patents
Info
- Publication number
- JPH0468332B2 JPH0468332B2 JP15613987A JP15613987A JPH0468332B2 JP H0468332 B2 JPH0468332 B2 JP H0468332B2 JP 15613987 A JP15613987 A JP 15613987A JP 15613987 A JP15613987 A JP 15613987A JP H0468332 B2 JPH0468332 B2 JP H0468332B2
- Authority
- JP
- Japan
- Prior art keywords
- adhesive
- transparent
- film
- metal
- polyol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 8
- 229920005862 polyol Polymers 0.000 claims description 5
- 150000003077 polyols Chemical class 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 239000011104 metalized film Substances 0.000 claims description 2
- 239000002985 plastic film Substances 0.000 claims description 2
- 229920006255 plastic film Polymers 0.000 claims 1
- 239000010408 film Substances 0.000 description 11
- 230000004888 barrier function Effects 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 239000005021 flexible packaging material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
Description
〔産業上の利用分野〕
本発明は、フイルム状の軟包装材料のラミネー
ト方法に関するもので、透明でバリヤー性に優れ
た複合フイルムを得る方法である。
〔従来の技術〕
従来、ハイバリヤーの複合フイルムを得る方法
としては、
(1) ハイバリヤー素材〔例えばポリ塩化ビニリデ
ン（PVDC）をコーテイングする方法
(2) ハイバリヤー素材をサンドイツチラミネート
する方法
が行われているが、きわめてバリヤー性の高い金
属箔及び金属蒸着フイルムは不透明で内容物が見
えない欠点を有しており、その他のハイバリヤー
素材も条件によつてバリヤー性が発揮されなかつ
たり、耐熱、耐水性等に欠点を持つていて、満足
なものは得られていない。
また、蒸着の抜き加工によつて、部分的に透明
部分を作り出す加工も行われているが、加工が複
雑でコストも高価になる上、酸またはアルカリで
蒸着金属をエツチングして水洗処理しているため
透明部分にはバリヤー性がない等の欠点がある。
〔発明が解決しようとする問題点〕
本発明者等は鋭意研究の結果、一定条件下でラ
ミネートした金属蒸着フイルムの蒸着層が湿熱処
理により透明化する事実を見出し、本発明を提供
するものである。
即ち、本発明は金属蒸着フイルムの蒸着面を一
定条件下のポリオール／ポリイソシアネート接着
剤で、他の透明フイルムとラミネートし、湿熱処
理により金属蒸着層を透明化させることができる
複合フイルムを得るラミネート方法である。
〔問題点を解決するための手段〕
金属蒸着層が透明化する原因は、必ずしも明ら
かでないが、接着剤の酸価、NCO／OH比等が微
妙に影響している点から考察して、酸とNCO−
H2Oの反応により発生する炭酸ガス、湿熱処理
の水の相互作用により金属蒸着層が酸化乃至は水
酸化されるものと推察される。
本発明で使用することのできる透明フイルムに
は特別の制限はない。通常、軟包装材料用として
使用されているフイルムが使用できる。その主な
フイルムの名称を次の表に掲げる。
[Industrial Application Field] The present invention relates to a method for laminating film-like flexible packaging materials, and is a method for obtaining a transparent composite film with excellent barrier properties. [Prior Art] Conventionally, methods for obtaining a high-barrier composite film include: (1) coating with a high-barrier material [for example, polyvinylidene chloride (PVDC)]; and (2) sandwich-laminating a high-barrier material. However, metal foils and metal-deposited films with extremely high barrier properties have the disadvantage that they are opaque and the contents cannot be seen, and other high-barrier materials may not exhibit their barrier properties depending on the conditions. It has drawbacks in heat resistance, water resistance, etc., and has not been satisfactory. In addition, partially transparent parts can be created by punching the vapor deposited metal, but this process is complicated and expensive, and the vapor deposited metal is etched with acid or alkali and then washed with water. Therefore, the transparent part has drawbacks such as lack of barrier properties. [Problems to be Solved by the Invention] As a result of intensive research, the present inventors discovered the fact that under certain conditions, the vapor deposited layer of a laminated metallized film becomes transparent by moist heat treatment, and thus provides the present invention. be. That is, the present invention is a laminate in which the vapor-deposited surface of a metal-deposited film is laminated with another transparent film using a polyol/polyisocyanate adhesive under certain conditions to obtain a composite film in which the metal-deposited layer can be made transparent by moist heat treatment. It's a method. [Means to solve the problem] The reason why the metal vapor deposited layer becomes transparent is not necessarily clear, but considering the subtle effects of the acid value of the adhesive, the NCO/OH ratio, etc. and NCO−
It is presumed that the metal vapor deposited layer is oxidized or hydroxylated due to the interaction between carbon dioxide gas generated by the reaction of H 2 O and water from the wet heat treatment. There are no particular limitations on the transparent film that can be used in the present invention. Films normally used for soft packaging materials can be used. The names of the main films are listed in the table below.
次に本発明の実施例について説明する。
表−１のような構成でラミネートテストを行い
硬化完了後120℃の加圧水中で20分間、湿熱処理
を行い、金属蒸着層の透明化の有無を比較した。
ラミネートテストはグラビヤ塗工式ドライラミ
ネーター（中島精機エンジニアリング社製NA−
DIC−LL型）を使用し、グラビヤ版は130線75μ
（旭ロール格子型彫刻ロール）、塗工量の調整は稀
釈溶剤の増減によつて行つた。
乾燥炉の温度設定は各ゾーン70℃、ライン速度
80ｍ／分、透明フイルム側に接着剤を塗工し、乾
燥、ラミネートは連続工程で行つた。
ラミニツプロール温度は50℃、巻取りウエツブ
は40℃で、５日エージングを行い硬化を完了させ
た。
Next, examples of the present invention will be described. A lamination test was conducted with the configuration shown in Table 1. After curing was completed, a moist heat treatment was performed in pressurized water at 120°C for 20 minutes, and the presence or absence of transparency of the metal vapor deposited layer was compared. The lamination test was conducted using a gravure coating type dry laminator (NA-
DIC-LL type) is used, and the gravure plate is 130 wire 75μ
(Asahi roll lattice type engraving roll) The coating amount was adjusted by increasing or decreasing the amount of diluting solvent. Drying oven temperature setting is 70℃ for each zone, line speed
Adhesive was applied to the transparent film side at 80 m/min, and drying and lamination were performed in a continuous process. The temperature of the laminated roll was 50°C, and the rolled web was aged at 40°C for 5 days to complete curing.
【表】【table】
本発明は透明なプラスチツクフイルムと金属蒸
着フイルム（バリヤー性に優れた）とをドライラ
ミネートするもので、接着剤としてポリオール／
ポリイソシアネート（主剤／硬化剤）を使用して
接着させるもので、バリヤー性に優れ、かつ透明
であり、ピンホール等を作らないもので、エツチ
ングしてバリヤー性を欠く等のこともないもので
ある。
The present invention involves dry laminating a transparent plastic film and a metal-deposited film (with excellent barrier properties), and uses polyol as an adhesive.
It uses polyisocyanate (main agent/curing agent) to adhere, has excellent barrier properties, is transparent, does not create pinholes, and does not etch and lose its barrier properties. be.
Claims (1)
用してプラスチツクフイルムと金属蒸着フイルム
とをドライラミネートするラミネート方法におい
て接着剤のポリオールの酸価が３mgKOH／ｇ以
上であり、接着剤のポリオールのOH価が10mg
KOH／ｇ以上であるラミネート方法。 ２ 接着剤のNCO／OH比が1.5以上である特許
請求の範囲第１項記載のラミネート方法。 ３ 接着剤の塗工量が0.8〜3.5ｇ／m2である特許
請求の範囲第１項記載のラミネート方法。[Claims] 1. In a laminating method of dry laminating a plastic film and a metallized film using a polyol/polyisocyanate adhesive, the polyol of the adhesive has an acid value of 3 mgKOH/g or more, and the polyol of the adhesive OH value is 10mg
A laminating method with KOH/g or more. 2. The laminating method according to claim 1, wherein the adhesive has an NCO/OH ratio of 1.5 or more. 3. The laminating method according to claim 1, wherein the coating amount of the adhesive is 0.8 to 3.5 g/ m2 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156139A JPH011736A (en) | 1987-06-23 | Lamination method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-156139A JPH011736A (en) | 1987-06-23 | Lamination method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPS641736A JPS641736A (en) | 1989-01-06 |
| JPH011736A JPH011736A (en) | 1989-01-06 |
| JPH0468332B2 true JPH0468332B2 (en) | 1992-11-02 |
Family
ID=
Also Published As
| Publication number | Publication date |
|---|---|
| JPS641736A (en) | 1989-01-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
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