JPH023701B2 - - Google Patents
Info
- Publication number
- JPH023701B2 JPH023701B2 JP29777985A JP29777985A JPH023701B2 JP H023701 B2 JPH023701 B2 JP H023701B2 JP 29777985 A JP29777985 A JP 29777985A JP 29777985 A JP29777985 A JP 29777985A JP H023701 B2 JPH023701 B2 JP H023701B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- vapor
- layer
- deposited layer
- deposited
- 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
- 229920006255 plastic film Polymers 0.000 claims description 24
- 239000002985 plastic film Substances 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 9
- 238000007740 vapor deposition Methods 0.000 description 17
- 230000004888 barrier function Effects 0.000 description 6
- 235000013305 food Nutrition 0.000 description 5
- 239000002932 luster Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 235000008960 ketchup Nutrition 0.000 description 1
- 238000001883 metal evaporation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 235000014347 soups Nutrition 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
- Physical Vapour Deposition (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明はレトルト用蒸着フイルムに関し、包
袋を形成し内部にレトルト食品を封入したレトル
トパウチを製造するためのレトルト用蒸着フイル
ムに係るものである。[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a vapor-deposited film for retorts, and more particularly, to a vapor-deposited film for retorts for producing a retort pouch in which a packaging bag is formed and a retort food is sealed inside. be.
（従来の技術）
レトルト用蒸着フイルムとしては従来、Al蒸
着フイルムが使用されている。Al蒸着フイルム
を使用するのは、遮光性、ガスバリア性、水蒸気
バリア性、美麗な金属光沢等をもたせるためであ
る。(Prior Art) Al vapor-deposited films have conventionally been used as vapor-deposited films for retorts. The Al-deposited film is used to provide light shielding properties, gas barrier properties, water vapor barrier properties, and beautiful metallic luster.
（発明が解決しようとする問題点）
しかし上記従来の技術では、レトルト殺菌時に
高温となるため、Al蒸着層が腐食してしまうと
いう欠点がある。例えば、Al蒸着フイルムのAl
蒸着層面にプラスチツクフイルムを貼着しフイル
ム面にヒートシール性フイルムを貼着して、これ
をヒートシール性フイルムを内側としてレトルト
パウチを作り、内部には食品の代用として食酢と
ケチヤツプを重量比で１：１に混合したスープを
入れて熱水式レトルト釜にて130℃×30分のレト
ルト処理を行うと、Al蒸着層は全面にわたり完
全に腐食してしまう。(Problems to be Solved by the Invention) However, the conventional technique described above has a drawback in that the Al vapor deposition layer corrodes due to high temperatures during retort sterilization. For example, Al vapor deposited film
A plastic film is pasted on the surface of the vapor deposited layer, a heat-sealable film is pasted on the film surface, and a retort pouch is made with the heat-sealable film on the inside. When a 1:1 mixed soup is added and retorted at 130°C for 30 minutes in a hot water retort pot, the Al deposited layer is completely corroded over the entire surface.
この発明はかかる欠点を除去したものである。 This invention eliminates this drawback.
（問題点を解決するための手段）
この発明は、プラスチツクフイルムＡ、200〜
800Åの厚さのAl蒸着層の表面に80Å以下の厚さ
のSn蒸着層が直接積層された金属蒸着層Ｂ、及
び耐熱性の良好なヒートシール性フイルムＣが、
Ａ，Ｂ，Ｃの順に積層されており、プラスチツク
フイルムＡを外側としヒートシール性フイルムＣ
を内側として包袋を形成するためのレトルト用蒸
着フイルムである。(Means for Solving the Problems) This invention provides plastic film A, 200~
A metal vapor deposited layer B in which a Sn vapor deposited layer with a thickness of 80 Å or less is directly laminated on the surface of an Al vapor deposited layer with a thickness of 800 Å, and a heat sealable film C with good heat resistance,
A, B, and C are laminated in this order, with plastic film A on the outside and heat-sealable film C.
This is a vapor-deposited film for retorts that is used to form wrapping bags with
次にこの発明を一実施例を示す図面を参照しつ
つ説明すると、この発明は例えば、まず、プラス
チツクフイルム１０としてポリエステルフイル
ム、ポリカーボネートフイルム、アクリルフイル
ム、その他各種のプラスチツクフイルムを使用
し、その片面に直接又は必要により適宜の樹脂に
よるアンダーコート層２０を介して、200〜800Å
の厚さのAl蒸着層３０を設ける。次いで、該Al
蒸着層３０上に80Å以下の厚さのSn蒸着層４０
を設けて金属蒸着層Ｂを形成する。この後Sn蒸
着層上には適宜の印刷を必要により施こしてもよ
い。 Next, the present invention will be described with reference to drawings showing one embodiment. First, for example, a polyester film, a polycarbonate film, an acrylic film, or any other type of plastic film is used as the plastic film 10, and one side of the film is 200 to 800 Å directly or through an undercoat layer 20 of an appropriate resin as necessary.
An Al vapor deposited layer 30 having a thickness of . Then, the Al
Sn vapor deposition layer 40 with a thickness of 80 Å or less on vapor deposition layer 30
A metal vapor deposition layer B is formed by providing the following steps. After this, appropriate printing may be performed on the Sn vapor deposited layer if necessary.
この発明で80Å以下の厚さのSn蒸着層４０を
200〜800Åの厚さのAl蒸着層３０の上に直接積
層したのは、第１にAl蒸着層表面の腐食点を押
さえ込み腐食点のポテンシヤルを下げ不導体層を
強化して耐食性を向上するため、第２にSnはレ
トルト用として食品に対する安全性が高い、第３
に80Å以下の厚さであるとAl蒸着層の美麗な金
属光沢がそのまま保たれる、等々によるものであ
る。 In this invention, the Sn vapor deposition layer 40 with a thickness of 80 Å or less is formed.
The reason why it is directly laminated on the Al vapor deposition layer 30 with a thickness of 200 to 800 Å is to suppress the corrosion points on the surface of the Al vapor deposition layer, lower the potential of the corrosion points, strengthen the nonconductor layer, and improve corrosion resistance. , secondly, Sn is highly safe for food for retort use; thirdly, Sn is highly safe for food use.
This is because when the thickness is 80 Å or less, the beautiful metallic luster of the Al deposited layer is maintained.
なお、Sn蒸着層はAl蒸着層の両面に積層して
もよく、また、片面のみに積層してもよく、後者
の場合のSn蒸着層は包袋を形成したときにAl蒸
着層の内側にあつてもよく外側にあつてもよい。 In addition, the Sn vapor deposition layer may be laminated on both sides of the Al vapor deposition layer, or may be laminated on only one side. In the latter case, the Sn vapor deposition layer is formed on the inside of the Al vapor deposition layer when the envelope is formed. It can be placed on the outside.
また、Al蒸着層３０の厚さを200〜800Åとし
たのは、200Åより薄くなるとガスバリア性、水
蒸気バリア性が低下し、800Åを超えるとプラス
チツクフイルム１０とAl蒸着層３０との密着力
が低下するからである。 The reason why the thickness of the Al vapor deposited layer 30 is set to 200 to 800 Å is that when it becomes thinner than 200 Å, gas barrier properties and water vapor barrier properties deteriorate, and when it exceeds 800 Å, the adhesion between the plastic film 10 and the Al vapor deposited layer 30 decreases. Because it does.
次に、Sn蒸着層４０及びAl蒸着層３０を設け
て金属蒸着層Ｂを形成したプラスチツクフイルム
１０をSn蒸着層４０を内側として接着剤５０に
てプラスチツクフイルムＡと貼着する。プラスチ
ツクフイルムＡとしてはポリエステルフイルム、
アクリルフイルム、その他各種のプラスチツクフ
イルムが使用できる。プラスチツクフイルムＡに
は内側に適宜の印刷を施こしておいてもよく、ま
た、上記貼着後の表面に適宜の印刷を施こしても
よい。 Next, the plastic film 10 on which the Sn evaporation layer 40 and the Al evaporation layer 30 are provided to form the metal evaporation layer B is attached to the plastic film A with the adhesive 50 with the Sn evaporation layer 40 inside. Plastic film A is polyester film,
Acrylic film and various other plastic films can be used. Appropriate printing may be applied to the inside of the plastic film A, or appropriate printing may be applied to the surface after pasting.
さらにこのようにして得たもののプラスチツク
フイルム１０面に接着剤５０にて耐熱性の良好な
ヒートシール性フイルムＣを貼着する。この場合
のヒートシール性フイルムＣとしてはヒートシー
ル性のポリプロピレンが例示されるが、これに限
らず、他のヒートシール性フイルムでもよい。 Furthermore, a heat-sealable film C having good heat resistance is adhered to the 10th surface of the plastic film thus obtained using an adhesive 50. The heat-sealable film C in this case is exemplified by heat-sealable polypropylene, but is not limited thereto, and may be any other heat-sealable film.
なお、この発明は、プラスチツクフイルムＡに
所定の金属蒸着層Ｂを設け、その上に、必要によ
りプラスチツクフイルム１０を介して、ヒートシ
ール性フイルムＣを積層してもよいのはもちろん
である。また、プラスチツクフイルム１０がプラ
スチツクフイルムＡの外側に位置する如き構成で
あつても当然この発明に含まれる。 It goes without saying that in the present invention, a predetermined metal vapor deposition layer B may be provided on the plastic film A, and a heat-sealable film C may be laminated thereon via the plastic film 10 if necessary. Further, even a configuration in which the plastic film 10 is located outside the plastic film A is naturally included in the present invention.
（実施例）
プラスチツクフイルム１０として厚さ12μのポ
リエチレンンテレフタレートフイルム（ダイアホ
イル社製ダイアホイル）を使用し、この片面にポ
リエステル系ウレタン樹脂を主成分とした樹脂に
よりアンダーコート層を設け、さらにその上に真
空蒸着により厚さ450ÅのAl蒸着層を設けた。次
に該Al蒸着層上に真空蒸着により厚さ15ÅのSn
蒸着層を設けて金属蒸着層Ｂを形成した。次い
で、金属蒸着層Ｂ上には、プラスチツクフイルム
Ａとして、プラスチツクフイルム１０として使用
したのと同様のフイルムを、プラスチツクフイル
ム１０上には、ヒートシール性フイルムＣとして
ヒートシール性ポリプロピレンフイルム（東レ社
製パイレンＰ−1145）を、それぞれ接着剤（大日
本インキ化学工業社製EPS−903／KL−75）にて
貼着した。(Example) A polyethylene terephthalate film (Diafoil manufactured by Diafoil Co., Ltd.) with a thickness of 12 μm was used as the plastic film 10, and an undercoat layer was provided on one side of the film with a resin mainly composed of polyester urethane resin. An Al deposited layer with a thickness of 450 Å was provided on top by vacuum deposition. Next, Sn with a thickness of 15 Å was deposited on the Al deposited layer by vacuum evaporation.
A vapor deposited layer was provided to form a metal vapor deposited layer B. Next, on the metal vapor deposition layer B, a film similar to that used as the plastic film 10 was used as a plastic film A, and on the plastic film 10, a heat-sealable polypropylene film (manufactured by Toray Industries, Inc.) was used as a heat-sealable film C. Pyrene P-1145) was attached using an adhesive (EPS-903/KL-75 manufactured by Dainippon Ink and Chemicals).
このようにして得たレトルト用蒸着フイルムを
ヒートシール性フイルムＣを内側として熱シール
にてパウチにし内容物に食品の代用として食酢と
ケチヤツプを重量比で１：１に混合したものを入
れ、熱水式高温高圧釜にて130℃×30分のレトル
ト処理を行つた。この結果、Al蒸着層の腐食は
全くなく美麗な金属光沢を呈していて外観変化は
全然見られなかつた。 The thus obtained vapor-deposited film for retorts was heat-sealed into a pouch with heat-sealable film C on the inside, and a mixture of vinegar and ketchup in a weight ratio of 1:1 as a food substitute was added to the pouch, and the pouch was heated. Retort treatment was performed at 130°C for 30 minutes in a water-type high-temperature high-pressure cooker. As a result, there was no corrosion of the Al deposited layer, and it had a beautiful metallic luster, with no change in appearance at all.
（比較例）
実施例におけるSn蒸着層及びAl蒸着層にかえ
て、Sn蒸着層を設けずに単に厚さ450ÅのAl蒸着
層としたほかは実施例と同様にしてレトルト用蒸
着フイルムを作製し、これを実施例と同様にして
同様の条件下で比較試験を行つた。この結果、
Al蒸着層は全面にわたり完全に腐食し、美麗な
金属光沢も全く失われた。(Comparative Example) A vapor-deposited film for a retort was produced in the same manner as in the example except that instead of the Sn vapor-deposited layer and the Al vapor-deposited layer in the example, the Sn vapor-deposited layer was not provided and an Al vapor-deposited layer with a thickness of 450 Å was simply used. A comparative test was conducted under the same conditions as in the example. As a result,
The Al deposited layer was completely corroded over the entire surface, and the beautiful metallic luster was completely lost.
（発明の効果）
この発明はレトルト用蒸着フイルムの金属蒸着
層として200〜800Åの厚さのAl蒸着層の上に80
Å以下の厚さのSn蒸着層を直接積層した金属蒸
着層を使用したから、レトルト処理によつても
Al蒸着層が腐食することがない。さらにAl蒸着
層とSn蒸着層のいずれも食品に対する安全性も
高いと同時に、レトルト処理によつても非常に高
いガスバリア性、水蒸気バリア性が失われること
がなくこれらを充分に保つことができるものであ
る。また、Sn蒸着層は80Å以下と薄いためAl蒸
着層の美麗な金属光沢はそのまま保たれ、外観上
はあたかもAl蒸着層単独の場合と殆んど同様の
光沢を呈しているものである。(Effects of the Invention) This invention provides a metal vapor deposition layer of 80 to 800 Å thick on an Al vapor deposition layer of 200 to 800 Å.
Since we used a metal vapor-deposited layer that was directly laminated with a Sn vapor-deposited layer with a thickness of less than Å, it could be
The Al deposited layer will not corrode. Furthermore, both the Al vapor deposition layer and the Sn vapor deposition layer are highly safe for food, and at the same time, their extremely high gas barrier properties and water vapor barrier properties are not lost even during retort processing, and these properties can be sufficiently maintained. It is. Furthermore, since the Sn vapor deposited layer is as thin as 80 Å or less, the beautiful metallic luster of the Al vapor deposited layer is maintained, and the appearance is almost the same as that of the Al vapor deposited layer alone.
図面はこの発明の一実施例を示す一部拡大断面
図である。
Ａ……プラスチツクフイルム、Ｂ……金属蒸着
層、Ｃ……ヒートシール性フイルム、１０……プ
ラスチツクフイルム、２０……アンダーコート
層、３０……Al蒸着層、４０……Sn蒸着層、５
０……接着剤。
The drawing is a partially enlarged sectional view showing an embodiment of the present invention. A... Plastic film, B... Metal vapor deposited layer, C... Heat sealable film, 10... Plastic film, 20... Undercoat layer, 30... Al vapor deposited layer, 40... Sn vapor deposited layer, 5
0...Adhesive.
Claims (1)
のAl蒸着層の表面に80Å以下の厚さのSn蒸着層
が直接積層された金属蒸着層Ｂ、及び耐熱性の良
好なヒートシール性フイルムＣが、Ａ，Ｂ，Ｃの
順に積層されており、プラスチツクフイルムＡを
外側としヒートシール性フイルムＣを内側として
包袋を形成するためのレトルト用蒸着フイルム。1 Plastic film A, metal vapor deposited layer B in which a Sn vapor deposited layer with a thickness of 80 Å or less is directly laminated on the surface of an Al vapor deposited layer with a thickness of 200 to 800 Å, and a heat sealable film C with good heat resistance, A vapor-deposited film for retorts, in which A, B, and C are laminated in this order, and the plastic film A is on the outside and the heat-sealable film C is on the inside to form a wrapping bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29777985A JPS62152747A (en) | 1985-12-26 | 1985-12-26 | Evaporated film for retort |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29777985A JPS62152747A (en) | 1985-12-26 | 1985-12-26 | Evaporated film for retort |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62152747A JPS62152747A (en) | 1987-07-07 |
| JPH023701B2 true JPH023701B2 (en) | 1990-01-24 |
Family
ID=17851068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29777985A Granted JPS62152747A (en) | 1985-12-26 | 1985-12-26 | Evaporated film for retort |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62152747A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2946356B2 (en) * | 1989-12-26 | 1999-09-06 | 未来工業 株式会社 | Concrete burying box |
| JP4714974B2 (en) * | 2000-09-07 | 2011-07-06 | Ｊｆｅスチール株式会社 | Film laminated steel sheet |
-
1985
- 1985-12-26 JP JP29777985A patent/JPS62152747A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62152747A (en) | 1987-07-07 |
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