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

A three-layer co-extrusion, packaging film technology, used in packaging, wrapping paper, household packaging, etc., can solve the problems of low packaging speed, product loss, restricted development, etc., and achieve easy opening, good stiffness, and smooth film surface. Effect

Active Publication Date: 2020-08-04
GUANGZHOU XINWEN PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the defects of the packaging material itself, the traditional container bag directly limits its further development in the packaging field
(1) Traditional container bags are easy to break, resulting in a large amount of product loss and poor appearance; (2) Traditional container bags are packed at a low speed, making it difficult to meet the high-speed packaging requirements of the packaging line; The performance does not meet the requ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0097] The preparation raw materials of the inner layer, the middle layer and the outer layer of the present invention are weighed and configured separately to obtain the mixture of the inner layer, the middle layer and the outer layer, and then the inner layer mixture and the middle layer are mixed according to the weight ratio of the inner layer, the middle layer and the outer layer material and outer layer mix.

[0098] The standards of the parts by weight of the inner layer, the middle layer and the outer layer are different in the present invention.

[0099] The second aspect of the present invention provides a method for preparing a three-layer co-extrusion packaging film, which includes: respectively transporting the preparation raw materials of the inner layer, the middle layer and the outer layer to three extruders. After being plasticized in the machine, it is transported to the same three-layer blown film die head, and the inner layer, middle layer and outer layer a...

Embodiment 1

[0105] Embodiment 1 of the present invention provides a kind of three-layer co-extrusion packaging film, and it comprises inner layer, middle layer and outer layer three parts that are arranged sequentially from inside to outside; By weight, the preparation raw material of described inner layer comprises 20 Parts of low-density polyethylene-1, 30 parts of linear low-density polyethylene-1, 5 parts of metallocene linear low-density polyethylene-1, 20 parts of high-density polyethylene-1; Including 20 parts of low-density polyethylene-2, 30 parts of linear low-density polyethylene-2, 5 parts of metallocene linear low-density polyethylene-2, 20 parts of high-density polyethylene-2, 2 parts of masterbatch; by weight In total, the raw materials for the preparation of the outer layer include 20 parts of low-density polyethylene-3, 30 parts of linear low-density polyethylene-3, 5 parts of metallocene linear low-density polyethylene-3, and 20 parts of high-density polyethylene-3.

[0...

Embodiment 2

[0113] Embodiment 2 of the present invention provides a kind of three-layer co-extrusion packaging film, and it comprises inner layer, middle layer and outer layer three parts that are arranged sequentially from inside to outside; By weight, the preparation raw material of described inner layer comprises 50 Parts of low-density polyethylene-1, 25 parts of linear low-density polyethylene-1, 60 parts of metallocene linear low-density polyethylene-1, 10 parts of high-density polyethylene-1; Including 50 parts of low-density polyethylene-2, 25 parts of linear low-density polyethylene-2, 60 parts of metallocene linear low-density polyethylene-2, 10 parts of high-density polyethylene-2, 10 parts of color masterbatch; by weight In total, the raw materials for the preparation of the outer layer include 50 parts of low-density polyethylene-3, 25 parts of linear low-density polyethylene-3, 60 parts of metallocene linear low-density polyethylene-3, and 10 parts of high-density polyethylen...

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PUM

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Abstract

The invention relates to the field of container bag packaging, in particular to a three-layer co-extrusion packaging film and a preparation method thereof. The three-layer co-extrusion packaging filmcomprises an inner layer, a middle layer and an outer layer which are sequentially arranged from inside to outside. The three-layer co-extrusion packaging film has the advantages of being good in stiffness, smooth in film surface, easy to open, resistant to high-temperature materials and the like, the high-temperature-resistant temperature can reach 115 DEG C, the requirements of enterprises withspecial downstream packaging requirements can be met, and compared with a traditional flexible freight bag lining bag, the three-layer co-extrusion packaging film can be used for meeting the high-temperature material filling requirement and cannot cause the condition that materials are not easy to discharge due to inner bag adhesion.

Description

technical field [0001] The invention relates to the field of container bag packaging, more specifically, the invention relates to a three-layer co-extruded packaging film and a preparation method thereof. Background technique [0002] Container bags are also known as flexible container bags, ton bags, space bags, etc. There are many English translations. FIBC is a kind of container unit appliance. It can be transported in a container unit with a crane or a forklift. It It is suitable for shipping bulk bulk powder and granular materials. Container bag is a kind of flexible transportation packaging container, which is widely used for transportation packaging of food, grain, medicine, chemical industry, mineral products, etc. packaging products. [0003] Due to the defects of the packaging material itself, the traditional container bag directly limits its further development in the packaging field. (1) Traditional container bags are easy to break, resulting in a large amount...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/32B32B27/20B32B7/02B32B33/00B65D65/40
CPCB32B27/08B32B27/32B32B27/20B32B7/02B32B33/00B65D65/40B32B2307/306B32B2439/00
Inventor 陆伟錩
Owner GUANGZHOU XINWEN PLASTIC
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