Preparation method for high-barrier anti-swelling packaging bag

A high-barrier, anti-expansion technology, which is applied in packaging, transportation and packaging, chemical instruments and methods, etc., can solve the problems of packaging bags that cannot meet the application occasions, poor barrier properties, and insufficient anti-expansion ability, and achieve excellent barrier properties. Anti-expansion, low cost, smooth and reliable operation

Active Publication Date: 2015-02-18
宜兴威尼特包装袋有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Most of the existing packaging bags have problems such as poor barrier property and insufficient anti-expansion ability, and the preparation process is relatively simple, so the manufactured packaging bags cannot meet the high requirements of use occasions

Method used

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  • Preparation method for high-barrier anti-swelling packaging bag
  • Preparation method for high-barrier anti-swelling packaging bag

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Experimental program
Comparison scheme
Effect test

Embodiment

[0028] A kind of preparation method of high barrier performance anti-expansion packaging bag of the present invention, it comprises the following steps,

[0029] 1. Inner bag making:

[0030] (1) LLDPE / LDPE, PET and TPU are blown into PET film through a three-layer co-extrusion film blowing machine. The temperature is controlled between 150-170°C, the frequency of the host is between 25-35Hz, and the traction frequency is 8- 10Hz, and then through the laminating machine, use the adhesive to laminate the PET film on both sides of the aluminum foil, and then cut the laminated aluminum film into pieces;

[0031] (2) Blow LDPE, TiV, and PA into five-layer co-extruded PA film through a five-layer co-extrusion blown film machine. 8-10Hz, then cut into film strips with a width of 5cm and the same length as the mesh spacer;

[0032] (3) Melt and extrude the PP particles, the melting temperature is between 140-150°C, and form a film by cooling, the film is punched by a die to form a ...

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Abstract

The invention relates to a preparation method for a high-barrier anti-swelling packaging bag. The preparation method comprises the following steps: internal bag manufacturing, external bag manufacturing and sewing of the internal bag and the external bag. The preparation method is automatic, and can be applied to manufacture the packaging bag which is excellent in barrier property and good in anti-swelling capability.

Description

technical field [0001] The invention relates to a method for preparing a packaging bag, in particular to a method for preparing an inner and outer packaging bag. Background technique [0002] Packaging bag, also known as container bag, is a kind of flexible transportation packaging container, which is widely used in the transportation packaging of food, grain, medicine, chemical industry, mineral products and other powdery, granular and lumpy items. [0003] Most of the existing packaging bags have problems such as poor barrier properties and insufficient anti-expansion ability, and the preparation process is relatively simple, so the manufactured packaging bags cannot meet high-demand applications. Contents of the invention [0004] Purpose of the invention: The purpose of the invention is to overcome the deficiencies in the prior art and provide an automated method for producing packaging bags with excellent barrier performance and excellent anti-expansion ability. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B31B1/00B31B1/74B29C69/00B32B37/06B32B37/10
Inventor 李侠林韦涛王鹏程
Owner 宜兴威尼特包装袋有限公司
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