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A film for high barrier packaging and bag making

A high-barrier, five-layer film technology, used in packaging, packaged food, household packaging, etc., can solve the problems of reducing oxygen permeability, poor oxygen and moisture barrier properties, and low mechanical properties, reducing oxygen permeability. , Not easy to shrink and deform, and enhance the effect of gas barrier performance

Active Publication Date: 2019-07-16
福融新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can overcome the problems of poor oxygen barrier performance, moisture barrier performance and low mechanical properties of food packaging films, and can minimize oxygen permeability, and has high moisture resistance function, inhibits bacterial reproduction, and prevents sugar, protein and oil. Oxidized and utilized by bacteria

Method used

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  • A film for high barrier packaging and bag making

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The film for high-barrier packaging and bag making adopts a five-layer film composite structure, which sequentially includes a modified polypropylene layer A, an ethylene acrylic acid polymer layer, a barrier function layer, and an ethylene methacrylate copolymer layer from the surface layer to the inner layer. , Modified polypropylene layer B.

[0019] The modified polypropylene layer A is composed of the following raw materials in parts by weight: 50 parts of polypropylene, 10 parts of ethylene-vinyl alcohol copolymer, 0.5 parts of polyvinyl methyl ether, 2 parts of maleic anhydride grafted polypropylene, 2 parts of nano calcium carbonate 1 part, 10 parts of linear low density polyethylene, 1 part of oxidized polyethylene, 1 part of tert-butyl hydroquinone. The raw material composition of the modified polypropylene layer B is consistent with the raw material composition of the modified polypropylene layer A.

[0020] The barrier functional layer is composed of the fo...

Embodiment 2

[0023] The film for high-barrier packaging and bag making adopts a five-layer film composite structure, which sequentially includes a modified polypropylene layer A, an ethylene acrylic acid polymer layer, a barrier function layer, and an ethylene methacrylate copolymer layer from the surface layer to the inner layer. , Modified polypropylene layer B.

[0024] The modified polypropylene layer A is composed of the following raw materials in parts by weight: 72 parts of polypropylene, 13 parts of ethylene-vinyl alcohol copolymer, 0.5 parts of polyvinyl methyl ether, 5 parts of maleic anhydride grafted polypropylene, 3 parts of nano calcium carbonate 1 part, 13 parts of linear low density polyethylene, 2 parts of oxidized polyethylene, 1 part of tert-butyl hydroquinone. The raw material composition of the modified polypropylene layer B is consistent with the raw material composition of the modified polypropylene layer A.

[0025] The barrier functional layer is composed of the f...

Embodiment 3

[0028] The film for high-barrier packaging and bag making adopts a five-layer film composite structure, which sequentially includes a modified polypropylene layer A, an ethylene acrylic acid polymer layer, a barrier function layer, and an ethylene methacrylate copolymer layer from the surface layer to the inner layer. , Modified polypropylene layer B.

[0029] The modified polypropylene layer A is composed of the following raw materials in parts by weight: 100 parts of polypropylene, 20 parts of ethylene-vinyl alcohol copolymer, 2.0 parts of polyvinyl methyl ether, 5 parts of maleic anhydride grafted polypropylene, and 5 parts of nano calcium carbonate 2 parts, 20 parts of linear low density polyethylene, 3 parts of oxidized polyethylene, 2 parts of tert-butyl hydroquinone. The raw material composition of the modified polypropylene layer B is consistent with the raw material composition of the modified polypropylene layer A.

[0030] The barrier functional layer is composed o...

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Abstract

The invention belongs to the technical field of macromolecular materials, and particularly relates to a film for high-barrier packaging and bagmaking. The film for high-barrier packaging and bagmakingis of a structure formed by compounding five layers of films, comprising a modified polypropylene layer A, an ethylene acrylic acid polymer layer, a barrier functional layer, an ethylene methyl acrylate polymer layer and a modified polypropylene layer B in sequence from the surface layer to the inner layer. The thin film disclosed by the invention can solve the problems that a film for food packaging is relatively low in oxygen resistance performance and wet resistance performance and low in mechanical performance, can reduce the oxygen permeation flux to the maximum extent, has a strong wetresistance function, and can inhibit bacterial reproduction and prevent sugar, protein and grease from being oxidized and used by germs.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a film for high barrier packaging and bag making. Background technique [0002] At present, food packaging manufacturing has begun to step into the high-tech industry field that is concerned by the world. In our country, as food plastic flexible packaging materials and its manufacturing technology have also received considerable attention and development. [0003] Analysis of food deterioration from the perspective of packaging includes the following reasons. The growth and reproduction of bacteria is the first main reason for food spoilage, and the existence of oxygen is a necessary condition for the survival and reproduction of bacteria; sugar, protein, and oil in food Oxidation and deterioration of ingredients such as vitamins and vitamins is another main reason for food spoilage. The loss of the original flavor of food and the infiltration of external o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/18B32B27/28B32B27/30B32B27/32B32B27/36
CPCB32B27/08B32B27/18B32B27/285B32B27/30B32B27/308B32B27/32B32B27/36B32B2250/24B32B2307/7145B32B2307/7246B32B2439/70
Inventor 贺秀喜黄倩阳盛四
Owner 福融新材料股份有限公司