Three-layer co-extrusion heavy packaging film and preparation method thereof

A three-layer co-extrusion, packaging film technology, used in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of poor stiffness and thermal deformation, high heat sealing temperature, package rupture, etc., and achieve good stiffness. , The effect of high friction coefficient and low heat sealing temperature
CN111483196AActive Publication Date: 2020-08-04GUANGZHOU XINWEN PLASTIC
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGZHOU XINWEN PLASTIC
Publication Date
2020-08-04

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Abstract

The invention relates to the field of packaging films, in particular to a three-layer co-extrusion heavy packaging film and a preparation method thereof. The three-layer co-extrusion heavy packaging film comprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside. The three-layer co-extrusion heavy packaging film provided by the invention hasthe advantages of good stiffness, high surface friction coefficient of the heavy packaging film, no stack slipping, low heat-sealing temperature, wide heat-sealing window, heat-sealing temperature aslow as 100 DEG C and heat-sealing window of 140 parts + / -40 DEG C, can meet the requirements of enterprises with special downstream packaging requirements, and realizes on-line continuous rapid packaging. Compared with a traditional heavy packaging bag, the packaging bag can be used in areas requiring low temperature and large heat sealing environment change difference.
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Description

technical field

[0001] The invention relates to the field of packaging films, more specifically, the invention relates to a three-layer co-extruded heavy packaging film and a preparation method thereof. Background technique

[0002] As we all know, heavy packaging film has become a common heavy packaging material in developed countries such as Europe and the United States. It is a new type of packaging material developed in China in recent years. A new type of packaging film product with multiple processes and operations such as material, heating and sealing. This kind of film can meet the needs of high-speed filling, large-scale storage and transportation, and automatic palletizing of large-scale production automatic packaging lines. cost. At present, with the rapid increase in the scale of synthetic resin plants in China, traditional paper composite films and woven bags are far from meeting the needs of today's large-scale industrial production. Heavy-duty packaging fil...

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
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