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Preparation method of plastic woven bag inner covering film

A plastic woven bag and inner coating technology, which is applied to other household appliances, etc., can solve the problems that the toughness of the inner coating cannot meet the market demand, and achieve the effects of reducing the number of surface wrinkles, prolonging the service life, and improving the binding force

Inactive Publication Date: 2019-12-03
ZAOYANG DONGHANG WOVEN PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the gap between the inner film and the circular woven bag in the existing plastic woven bag is easy to be peeled off, and the toughness of the inner film cannot meet the increasing market demand.

Method used

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  • Preparation method of plastic woven bag inner covering film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a plastic woven bag inner covering film, comprising two layers of an outer layer and an inner layer, the preparation method comprising the following steps:

[0029] S1 Mixing: 70 parts of linear low-density polyethylene, 3 parts of high-density polyethylene, 3 parts of glycidoxypolydimethylsiloxane, and adhesive activator 1,4-butanediol 3 parts of two (methacrylic acid) esters, 5 parts of montmorillonite are mixed and prepared into an outer layer raw material mixture, 70 parts of inner layer raw materials low-density polyethylene, 5 parts of high-density polyethylene, 3 parts of natural rubber latex, 5 parts of additives 3 parts, 3 parts of cyclovinyl polymethoxysilane are mixed to prepare the inner layer mixture;

[0030] S2 blending: the outer layer raw material mixture and the inner layer raw material mixture in step S1 are blended according to a weight ratio of 3:7, and stored separately for production;

[0031] S3 blow molding: (1) adding th...

Embodiment 2

[0036] A method for preparing a plastic woven bag inner covering film, comprising two layers of an outer layer and an inner layer, the preparation method comprising the following steps:

[0037] S1 Mixing: 80 parts of linear low-density polyethylene, 5 parts of high-density polyethylene, 5 parts of glycidoxypolydimethylsiloxane, and adhesive activator 1,4-butanediol 5 parts of two (methacrylic acid) esters, 8 parts of talcum are mixed and prepared into the outer layer raw material mixture, with 90 parts of inner layer raw materials low-density polyethylene, 8 parts of high-density polyethylene, 5 parts of natural rubber latex, 10 parts of additives, Prepare the inner layer mixture after mixing 5 parts of cyclovinyl polymethoxysilane;

[0038] S2 blending: the outer layer raw material mixture and the inner layer raw material mixture in step S1 are blended according to a weight ratio of 4:6, and stored separately for production;

[0039] S3 blow molding: (1) adding the outer la...

Embodiment 3

[0044] A method for preparing a plastic woven bag inner covering film, comprising two layers of an outer layer and an inner layer, the preparation method comprising the following steps:

[0045] S1 Mixing: 75 parts of linear low-density polyethylene, 4 parts of high-density polyethylene, 4 parts of glycidoxypolydimethylsiloxane, and adhesive activator 1,4-butanediol 4 parts of di(methacrylate) ester, 5-8 parts of kaolin are mixed to prepare the outer layer raw material mixture, 80 parts of low density polyethylene, 7 parts of high density polyethylene, 4 parts of natural rubber latex, 8 additives Parts, 4 parts of cyclovinyl polymethoxysilane are mixed to prepare the inner layer mixture;

[0046] S2 deployment: the outer layer raw material mixture and the inner layer raw material mixture in step S1 are prepared according to the weight ratio of 3.5:6.5, and stored separately for production;

[0047] S3 blow molding: (1) adding the outer layer raw material mixture and the inner...

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Abstract

The invention provides a preparation method of a plastic woven bag inner covering film, which comprises an outer layer and an inner layer, and the preparation method comprises the following steps: S1,mixing: mixing outer layer raw materials to prepare an outer layer raw material mixture, and mixing inner layer raw materials to prepare an inner layer mixture; S2, blending: blending the outer layerraw material mixture and the inner layer raw material mixture in the step S1 according to a proportion, and respectively storing the outer layer raw material mixture and the inner layer raw materialmixture for production; and S3, blow molding: carrying out co-extrusion blow molding on the outer layer raw material mixture and the inner layer raw material mixture blended in the step S2 to obtain the plastic woven bag inner covering film. The inner covering film provided by the invention is high in toughness and environment-friendly, and is tightly bonded with a plastic circular woven bag.

Description

technical field [0001] The invention relates to the technical field of plastic woven bag production technology, in particular to a method for preparing a plastic woven bag inner covering film. Background technique [0002] The inner film woven bag is widely used in chemical industry, agriculture, food, cement and other industries. It not only inherits the advantages of high tensile strength of woven bag, but also has good air tightness and moisture resistance of film bag. It is a typical composite bag. Packaging Materials. In particular, the inner film-coated woven bag made of cylindrical woven cloth as the base cloth has strong breaking resistance, good air tightness, moisture-proof, hard-to-fall-off film, strong ability to withstand internal air pressure, and no longer has an ugly appearance. The outer woven bag has the advantages of existing ruffles and undamaged strength, and fundamentally solves the original process of manually turning the bag. [0003] However, in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/18B29C48/92C08L23/08C08L23/06C08L7/02C08J5/18B29L9/00B29K23/00
CPCB29K2023/0633B29L2009/00B29C48/0017B29C48/022B29C48/18B29C48/92B29C2948/92704C08J5/18C08J2323/06C08J2323/08C08J2407/02C08J2423/06
Inventor 张爱军张峰陈颜君
Owner ZAOYANG DONGHANG WOVEN PRINTING CO LTD