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Paper-plastic composite packaging material with high air permeability and preparation method thereof

A paper-plastic composite and packaging material technology, applied in the field of packaging materials, can solve the problems of poor air permeability and achieve the effects of improved air permeability, stable film blowing process, and good low-temperature adhesive performance

Active Publication Date: 2021-10-22
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of poor air permeability of paper-plastic composite packaging materials in the prior art, and provide a paper-plastic composite packaging material with high air permeability and its preparation method

Method used

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  • Paper-plastic composite packaging material with high air permeability and preparation method thereof
  • Paper-plastic composite packaging material with high air permeability and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] S1. Weigh the raw materials of each corresponding weight component according to the formula composition of the film bonding layer, the middle layer and the heat-sealing layer, wherein the bonding layer is composed of 100 parts by mass of modified EVA resin, and the middle layer is composed of 75 parts by mass The high-density polyethylene resin and the low-density polyethylene resin of 25 mass parts are composed; The heat-sealing layer is composed of 75 mass parts of low-density polyethylene resin, 25 mass parts of metallocene polyethylene resin, 1.5 mass parts of smooth Masterbatch, 1 part by mass of open masterbatch and 0.2 part by mass of processing aids are added to the three barrels of W&H film blowing equipment;

[0031] The raw materials in the above three barrels are mixed and melted to form a tube blank, and the tube blank is stretched and then punched out from the center of the extruder die and compressed air, so that the tube blank is blown into a film bubble,...

Embodiment 2

[0035] S1. Weigh the raw materials of each corresponding weight component according to the formula composition of the film bonding layer, the middle layer and the heat sealing layer, wherein the bonding layer is composed of 95 parts by mass of modified EVA resin, and the middle layer is composed of 75 parts by mass The high-density polyethylene resin and the low-density polyethylene resin of 25 mass parts are composed; The heat-sealing layer is composed of 80 mass parts of low-density polyethylene resin, 25 mass parts of metallocene polyethylene resin, 1.5 mass parts of smooth Masterbatch, 1 part by mass of open masterbatch and 0.2 part by mass of processing aids are added to the three barrels of W&H film blowing equipment;

[0036] The raw materials in the above three barrels are mixed and melted to form a tube blank, and the tube blank is stretched and then punched out from the center of the extruder die and compressed air, so that the tube blank is blown into a film bubble, ...

Embodiment 3

[0040] S1. Weigh the raw materials of each corresponding weight component according to the formula composition of the film bonding layer, the middle layer and the heat sealing layer, wherein the bonding layer is composed of 90 parts by mass of modified EVA resin, and the middle layer is composed of 75 parts by mass The high-density polyethylene resin and the low-density polyethylene resin of 25 mass parts are composed; The heat-sealing layer is composed of 85 mass parts of low-density polyethylene resin, 25 mass parts of metallocene polyethylene resin, 1.5 mass parts of smooth Masterbatch, 1 part by mass of open masterbatch and 0.2 part by mass of processing aids are added to the three barrels of W&H film blowing equipment;

[0041] The raw materials in the above three barrels are mixed and melted to form a tube blank, and the tube blank is stretched and then punched out from the center of the extruder die and compressed air, so that the tube blank is blown into a film bubble, ...

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Abstract

The invention provides a paper-plastic composite packaging material with high air permeability and a preparation method thereof. The preparation method comprises a film blowing production process, a hot needle micropore process and a hot laminating compounding process;a PE film material with high air permeability is obtained by optimizing a formula of a PE film and performing micropore treatment on the modified PE film; then a conventional adhesive dry compounding mode and a PE particle extrusion compounding mode are avoided, and paper-plastic packaging materials are compounded in a hot laminating manner, so micropores in a modified polyethylene PE film are prevented from being blocked by dry laminating or extrusion laminating; and finally, the PE film material with stable and excellent air permeability is obtained, shows excellent thermal stability, impact resistance, heat sealability and excellent low-temperature adhesive property, is applied to the fields of daily life article packaging, medicine, the clothing industry, electrical elements and the like, and meets the specific requirements of customer markets.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a paper-plastic composite packaging material with high air permeability and a preparation method thereof. Background technique [0002] Paper-plastic composite packaging materials are mainly packaging materials composed of paper and plastic substrates with different properties. Paper is made of plant fiber as the main raw material. It is a randomly oriented hierarchical network bonded by hydrogen bonds between fibers. Paper has the characteristics of good stiffness, opacity, easy bonding, easy printing, and excellent air permeability. Polyethylene PE film is the most widely used plastic substrate in paper-plastic composite packaging. It has excellent low temperature resistance, good chemical stability, excellent heat sealing performance, good processing performance, and has good impact strength, flexibility and It has excellent moisture barrier properties and is widely used as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B27/32B32B27/08B32B27/06B32B38/00B32B38/04B32B29/00B32B27/10B32B37/10B65D65/40B29D7/01
CPCB32B27/306B32B27/32B32B27/08B32B38/0008B32B38/04B32B29/00B32B27/10B32B37/10B65D65/40B29D7/01B32B2038/047B32B2307/306B32B2307/31B32B2307/724B32B2553/00
Inventor 谢文汇杨勇刘学军
Owner HUANGSHAN NOVEL
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