JP2502542Y2 - Laminated film - Google Patents
Laminated filmInfo
- Publication number
- JP2502542Y2 JP2502542Y2 JP1990123241U JP12324190U JP2502542Y2 JP 2502542 Y2 JP2502542 Y2 JP 2502542Y2 JP 1990123241 U JP1990123241 U JP 1990123241U JP 12324190 U JP12324190 U JP 12324190U JP 2502542 Y2 JP2502542 Y2 JP 2502542Y2
- Authority
- JP
- Japan
- Prior art keywords
- film
- base film
- adhesive
- laminating
- rough surface
- 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 - Fee Related
Links
Landscapes
- Wrappers (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】 〔考案の目的〕 (産業上の利用分野) 本考案は、無溶剤形接着剤を用いた積層フイルムに関
する。DETAILED DESCRIPTION OF THE INVENTION [Purpose of Invention] (Field of Industrial Application) The present invention relates to a laminated film using a solventless adhesive.
(従来の技術) 一般に用いられている食品包装袋を成形するための積
層フイルムにおいて、基材フイルムに貫通する微細孔を
含む細幅の粗面部を形成し、この粗面部を食品包装袋の
開口部の近くに位置させることで、粗面部を食品包装袋
を開封する際の開封案内部として作用させるようにした
ものは知られている。(Prior Art) In a commonly used laminated film for forming a food packaging bag, a narrow rough surface portion including fine holes penetrating the base film is formed, and this rough surface portion is opened in the food packaging bag. It is known that the rough surface portion is made to act as an opening guide portion when the food packaging bag is opened by locating the rough surface portion near the portion.
上記細幅粗面部の形成は、通常基材フイルムに印刷処
理を施した後に行われ、その後、シーラント層をラミネ
ート加工するが、このラミネート加工は、基材フイルム
にオレフィンフィルムを押し出しラミネートするか、基
材フイルムに接着剤を介してオレフィンフフィルム貼り
合わせるといういわゆるドライラミネート方式により行
われる。上記接着剤としては、ウレタン系、ポリエチレ
ンイミン、有機チタネート、ポリブタジェン等を酢酸エ
チル等の溶剤に溶かした溶液が用いられている。The formation of the narrow rough surface portion is usually performed after performing a printing process on the substrate film, and then laminating the sealant layer, this laminating process, by extruding and laminating the olefin film to the substrate film, This is performed by a so-called dry laminating method in which an olefin film is attached to a base film via an adhesive. As the adhesive, a solution of urethane type, polyethyleneimine, organic titanate, polybutadiene and the like dissolved in a solvent such as ethyl acetate is used.
(考案が解決しようとする課題) 細幅粗面部を形成した基材フイルムを有する積層フイ
ルムでは、基材フイルムに貫通する微細孔が形成されて
いるため、ラミネート加工するために、接着剤を塗布し
た際に、接着剤溶液が基材フイルムに設けた微細孔を通
して基材フイルムの裏面にしみでる、いわゆる抜けとい
う現象が生じる。この基材フイルムの裏面にしみでた接
着剤は、加工機械を汚染させたり、またはラミネートロ
ールを巻き取る際に、ブロッキングを生じさせ、ラミネ
ートロールの巻き出しができなくなってしまうことがあ
る。(Problems to be solved by the invention) In a laminated film having a base film having a narrow and rough surface portion, since fine holes penetrating the base film are formed, an adhesive is applied for laminating. In doing so, a phenomenon called so-called omission occurs in which the adhesive solution bleeds through the fine holes provided in the base film to the back surface of the base film. The adhesive that stains on the back surface of the base film may contaminate the processing machine or cause blocking when the laminating roll is wound up, so that the laminating roll cannot be unwound.
そこで、この抜けを防ぐために、基材フイルムの細幅
粗面部を形成した後に、基材フイルムの裏面にメジウム
などの樹脂組成物を塗布し、その後、基材フイルムに接
着剤を塗布するようにした技術手段が提案されたが、こ
の技術手段では、接着剤溶液の基材フイルムの裏面への
しみだしを完全に抑えることはできず、またメジウムな
どの樹脂組成物を塗布することで形成されるコート層に
より層間の接着強度が低下したり、コート層の不透明性
により、形成される積層フイルムの透明性を確保できな
いという難点がある。Therefore, in order to prevent this omission, after forming a narrow rough surface portion of the base film, apply a resin composition such as medium to the back surface of the base film, and then apply an adhesive to the base film. However, this technical means cannot completely suppress the seepage of the adhesive solution on the back surface of the base film, and it is formed by applying a resin composition such as medium. However, there is a problem in that the adhesive strength between the layers is reduced due to the coating layer and the transparency of the formed laminated film cannot be ensured due to the opacity of the coating layer.
本考案は上記した点に鑑みてなされたもので、ラミネ
ートフイルムの層間の接着強度を強くし、かつ接着剤溶
液の基材フイルムの裏面へのしみだしを防ぐようにした
積層フイルムを提供することを目的とする。The present invention has been made in view of the above points, and provides a laminated film in which the adhesive strength between the layers of the laminated film is increased and the exudation of the adhesive solution on the back surface of the base film is prevented. With the goal.
(考案の構成) 本考案の積層フイルムは、一面に印刷層を設けた基材
フイルムと、この基材フイルムに形成した貫通する微細
孔を含む細幅の粗面部と、基材フイルムの印刷層を設け
た面に塗布された無溶剤ラミネート接着剤層と、この無
溶剤ラミネート接着剤層を介して基材フイルムに接合さ
れたオレフィンフイルムとを有して構成される。(Structure of the Invention) The laminated film of the present invention comprises a base film having a print layer on one surface, a narrow rough surface portion including fine holes penetrating the base film, and a print layer of the base film. It has a solventless laminating adhesive layer applied on the surface provided with and an olefin film bonded to the base film via the solventless laminating adhesive layer.
(作用) 本考案の積層フイルムにおいては、貫通する微細孔を
含む細幅粗面部を設けた基材フイルムとオレフィンフイ
ルムとを無溶剤ラミネート接着剤層を介して接合するこ
とで、ラミネートフイルムの層間の接着強度を強くし、
かつ接着剤溶液の基材フイルムの裏面へのしみだしを防
ぎ、製品の透明性を確保できる。(Function) In the laminated film of the present invention, the base film provided with the narrow and rough surface portion including the fine holes penetrating the olefin film and the olefin film are bonded together via the solventless laminating adhesive layer to thereby form an interlayer of the laminating film. Strengthen the adhesive strength of
Moreover, the exudation of the adhesive solution on the back surface of the base film can be prevented, and the transparency of the product can be secured.
(実施例) 以下本考案の一実施例を図面につき説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
図面は本考案による積層フイルムの一部断面図を示
し、この積層フイルム1の基材フイルム2の一面には、
通常のグラビヤ印刷手段により印刷層3が形成され、こ
の印刷層3を設けた基材フイルム2には、図示しない粗
面加工装置により貫通する微細孔4を含む細幅の粗面部
5が形成されている。そしてこの基材フイルム2の印刷
層3を設けた面に無溶剤ラミネート接着剤層6を介して
オレフィンフイルム7が接合される。なお、図面中符号
8は微細孔4に入り込んだ無溶剤ラミネート接着剤であ
る。The drawing shows a partial cross-sectional view of a laminated film according to the present invention. One surface of a base film 2 of the laminated film 1 is
A printing layer 3 is formed by an ordinary gravure printing means, and a base film 2 provided with this printing layer 3 is formed with a narrow-width rough surface portion 5 including fine holes 4 penetrating by a rough surface processing device (not shown). ing. Then, the olefin film 7 is bonded to the surface of the base film 2 on which the printing layer 3 is provided via the solventless laminating adhesive layer 6. Reference numeral 8 in the drawing is a solventless laminating adhesive that has entered the fine holes 4.
食品包装袋を成形するための積層フイルムとしては、
基材フイルム2に厚さ40ミクロンの横方向性の延伸ポリ
プロピレンフイルムが、オレフィンフイルム7としては
厚さ25ミクロンの無延伸ポリプロピレンが適当である。As a laminated film for forming food packaging bags,
A 40 micron thick transversely oriented polypropylene film is suitable for the base film 2, and a 25 micron thick unstretched polypropylene is suitable for the olefin film 7.
上記無溶剤ラミネート接着剤としては、たとえば脂肪
族イソシアネートにポリエステルポリオール(硬化剤)
を混合したものである。Examples of the solventless laminating adhesive include, for example, aliphatic isocyanate and polyester polyol (curing agent).
Is a mixture of.
しかして、食品包装袋に使用される積層フイルムを形
成するには、まず、基材フイルム2の一面に通常にグラ
ビヤ印刷手段により印刷を施し、ついで印刷層3を設け
た基材フイルム2を、図示しない粗面加工装置に送り、
ここで、基材フイルム2に貫通する微細孔4に含む細幅
の粗面部5を形成する。そして粗面加工装置からでた基
材フイルム2の印刷層3を設けた面にノズルフィード方
式により無溶剤ラミネート接着剤を73℃の温度の下で加
温塗布して、基材フイルム2に無溶剤ラミネート接着剤
層6を形成する。ついで、この無溶剤ラミネート接着剤
層6の上にオレフィンフイルム7を配して基材フイルム
2のオレフィンフイルム7をラミネート加工する。Then, in order to form a laminated film used for a food packaging bag, first, one surface of the base film 2 is printed by a normal gravure printing means, and then the base film 2 provided with the printing layer 3 is Send to a rough surface processing device (not shown),
Here, the narrow rough surface portion 5 included in the fine hole 4 penetrating the base film 2 is formed. Then, a solvent-free laminating adhesive is heated and applied at a temperature of 73 ° C. by a nozzle feed method on the surface of the base material film 2 provided with the printing layer 3 from the rough surface processing device, and the base material film 2 is not coated. The solvent laminating adhesive layer 6 is formed. Then, the olefin film 7 is placed on the solventless laminating adhesive layer 6 to laminate the olefin film 7 of the base film 2.
上記基材フイルム2へのオレフィンフイルム7のラミ
ネート加工時において、接着剤が無溶剤型のものである
から、この無溶剤ラミネート接着剤層の接着剤が基材フ
イルム2に設けた細幅粗面部5の貫通する微細孔4に入
る込むことはあっても、この微細孔4に入った接着剤が
基材フイルム2の裏面にしみだすことはない。At the time of laminating the olefin film 7 on the base film 2, the adhesive is a solventless type adhesive, so that the adhesive of the solventless laminating adhesive layer is provided on the base film 2 to form a narrow rough surface portion. Although it may enter the fine holes 4 penetrating therethrough, the adhesive in the fine holes 4 does not seep out to the back surface of the base film 2.
また、このようにして作られた巻きロールは、熟成工
程を経た後でも、巻きロールにブロッキングの現象が発
生しなかった。In addition, the winding roll thus produced did not cause the blocking phenomenon even after the aging process.
以上述べたように本考案によれば、一面に印刷層を設
けた基材フイルムと、この基材フイルムに形成した貫通
する微細孔を含む細幅の粗面部と、基材フイルムの印刷
層を設けた面に塗布された無溶剤ラミネート接着剤層
と、この無溶剤ラミネート接着剤層を介して基材フイル
ムに接合されたオレフィンフイルムとを有するので、ラ
ミネートフイルムの層間の接着強度を強くし、かつ接着
剤溶液の基材フイルムの裏面へのしみだしを防ぎ、製品
の透明性を確保でき、食品包装袋として適用できる。As described above, according to the present invention, a base film having a print layer on one surface, a narrow rough surface portion including penetrating fine holes formed in the base film, and a print layer of the base film are provided. Since it has a solventless laminating adhesive layer applied to the surface provided and an olefin film bonded to the base film via the solventless laminating adhesive layer, it strengthens the adhesive strength between the layers of the laminating film, Moreover, the adhesive solution can be prevented from oozing out on the back surface of the base film, the transparency of the product can be ensured, and it can be applied as a food packaging bag.
図面は本考案による積層フイルムの一部断面図である。 1…積層フイルム、2…基材フイルム、5…粗面部、6
…無溶剤ラミネート接着剤層、7…オレフィンフイル
ム。The drawing is a partial cross-sectional view of a laminated film according to the present invention. 1 ... Laminated film, 2 ... Base film, 5 ... Rough surface portion, 6
… Solventless laminating adhesive layer, 7… Olefin film.
Claims (1)
の基材フイルムに形成した貫通する微細孔を含む細幅の
粗面部と、基材フイルムの印刷層を設けた面に塗布され
た無溶剤ラミネート接着剤層と、この無溶剤ラミネート
接着剤層を介して基材フイルムに接合されたオレフィン
フイルムとを有する積層フイルム。1. A base film having a print layer provided on one surface, a narrow rough surface portion including penetrating fine holes formed in the base film, and a base film having a print layer provided thereon. A laminated film having a solventless laminating adhesive layer and an olefin film bonded to a substrate film via the solventless laminating adhesive layer.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990123241U JP2502542Y2 (en) | 1990-11-22 | 1990-11-22 | Laminated film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1990123241U JP2502542Y2 (en) | 1990-11-22 | 1990-11-22 | Laminated film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0479636U JPH0479636U (en) | 1992-07-10 |
JP2502542Y2 true JP2502542Y2 (en) | 1996-06-26 |
Family
ID=31870957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1990123241U Expired - Fee Related JP2502542Y2 (en) | 1990-11-22 | 1990-11-22 | Laminated film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2502542Y2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019085158A (en) * | 2017-11-09 | 2019-06-06 | 大日本印刷株式会社 | Packaging bag and production method thereof |
JP7046624B2 (en) * | 2018-01-30 | 2022-04-04 | 大倉工業株式会社 | Manufacturing method of easy-to-tear packaging material |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01153459A (en) * | 1987-11-27 | 1989-06-15 | Okada Shiko Kk | Sealing bag |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63147451U (en) * | 1987-03-19 | 1988-09-28 | ||
JP2520916B2 (en) * | 1987-09-18 | 1996-07-31 | 積水化学工業株式会社 | Method for laminating thermoplastic resin film or sheet |
JPH0618899Y2 (en) * | 1988-09-29 | 1994-05-18 | 株式会社細川洋行 | Retort packaging bag for food |
-
1990
- 1990-11-22 JP JP1990123241U patent/JP2502542Y2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01153459A (en) * | 1987-11-27 | 1989-06-15 | Okada Shiko Kk | Sealing bag |
Also Published As
Publication number | Publication date |
---|---|
JPH0479636U (en) | 1992-07-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |