Unlock instant, AI-driven research and patent intelligence for your innovation.

Laminated film and packaging container

A technology of laminated film and adhesive layer, applied in the direction of packaging, containers, wrapping paper, etc., can solve the problems of difficult manufacturing, film damage, etc., and achieve excellent adhesion, simple manufacturing, retort resistance and content tolerance excellent effect

Inactive Publication Date: 2021-05-11
TOPPAN PRINTING CO LTD
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In such a configuration, in order to impart sufficient retort resistance and content resistance to the laminated film, a long curing time of the adhesive is required, so it may be difficult to manufacture in a short time.
In addition, when the laminated film is wound into a roll during production, the film may be damaged due to the tension of the film due to the heat during curing and load on the film.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Laminated film and packaging container
  • Laminated film and packaging container
  • Laminated film and packaging container

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0163] The structure of the gas barrier film portion is the structure of the gas barrier film portion 10 in which a base film layer, a primer layer, a metal oxide vapor-deposited layer, and a gas barrier coating layer are sequentially laminated. After laminating the pattern ink on the side of the gas barrier coating layer, (A) (maleic anhydride graft-polymerized polypropylene, melting point: 106°C, density: 0.89g / cm 3 , MFR: 12g / 10 minutes), an adhesive layer was formed. Next, a corona discharge treatment was performed on one surface of an unstretched polypropylene film for retort sterilization (CPP, thickness 70 μm, manufactured by "Toray Film Processing" Co., Ltd., trade name "ZK500"), and the treated surface was pasted on On the adhesive layer side, a thermoplastic resin layer was laminated on the gas barrier film portion via the adhesive layer by thermal lamination to obtain the laminated film of Example 1.

[0164] Two sheets of the laminated film of Example 1 were pre...

Embodiment 2

[0167] The structure of the gas barrier film portion is the structure of the gas barrier film portion 10A in which a base film layer (treated with plasma), a metal oxide vapor-deposited layer, and a gas barrier coating layer are sequentially laminated. Use (B) (maleic anhydride graft polymerized polypropylene, melting point: 161°C, density: 0.88g / cm 3 , MFR: 9g / 10 minutes) and FL02C (polypropylene (not modified PP), melting point: 138°C, density: 0.89g / cm 3 , MFR: 18g / 10 minutes, "Nippon Polypro" Co., Ltd.) as an adhesive to form an adhesive layer, and utilize the melt extrusion method to laminate the entire surface with a thickness of each 10 μm, except that it is the same as in Example 1 The laminated film and packaging container of Example 2 were successfully produced.

Embodiment 3

[0169] The structure of the gas barrier film portion is the structure of the gas barrier film portion 10B in which the base film layer 11 and the gas barrier layer 16 are sequentially laminated. Using the trade name "Unistoll R-300" (maleic anhydride graft-polymerized polypropylene, melting point: 140°C, solid content concentration: 18% by mass, average particle diameter: 10 μm, manufactured by "Mitsui Chemicals Co., Ltd.") as Adhesives that form the bonding layer, and at 1.5g / m 2 Coated on the gas barrier film part. Other points were similar to Example 1, and the laminated film and packaging container of Example 3 were produced.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

Provided is a laminated film in which a gas barrier film portion, an adhesive layer, and a thermoplastic resin layer are laminated in this order, wherein the adhesive layer has a layer which is mainly composed of a maleic anhydride grafted polypropylene, and the maleic anhydride grafted polypropylene has a maleic anhydride graft ratio of 0.1-1 wt%.

Description

technical field [0001] The present invention relates to a laminated film and a packaging container using the laminated film. [0002] This patent application claims priority based on Japanese Patent Application No. 2018-184274 filed on September 28, 2018, and uses the contents thereof herein. Background technique [0003] In general, packaging materials used for packaging of foods, medicines, etc. are required to have a function of suppressing deterioration, spoilage, etc. of the contents, and maintaining the functions and properties of the contents. As one of such packaging materials, there is known a gas-barrier laminated film that prevents entry of gases that degrade the contents, such as water vapor and oxygen. [0004] For example, Patent Document 1 describes a laminated film. In this laminated film, a barrier layer composed of a metal oxide or metal vapor-deposited layer is formed on the outer surface of a base film layer such as a polyester film, and a sealant layer...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B9/00B65D65/40
CPCB65D65/40B32B9/00B32B7/12B32B2255/24B32B2255/26B32B2255/06B32B2255/10B32B2307/7242B32B2307/7244B32B27/16B32B2307/308B32B2439/70B32B2439/80B32B2439/46B32B2307/31C09J151/06C08J7/043B32B2270/00B32B27/308B32B27/306B32B2250/02B32B2255/28B32B27/34B32B2255/20B32B2307/732B32B27/36B32B27/32B32B27/38B32B27/08B32B2250/24B32B2250/03C08J7/048C08J2300/22C08J2451/06C08J2423/12C08J7/0423B32B2274/00B32B2307/7246B32B2323/10
Inventor 菅谷幸子菅野雅惠
Owner TOPPAN PRINTING CO LTD