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Co-extrusion polyethylene film and film blowing forming process

A technology of co-extrusion polyethylene and molding process, which is applied in the chemical industry, can solve the problems of limited use range, difficult printing of polyethylene materials, etc., and achieve the effect of avoiding equipment safety and eliminating static electricity

Active Publication Date: 2016-08-24
LINYI JIARUN PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the problem that polyethylene materials are difficult to print, the usual polyethylene materials are colorless or light-colored products, which greatly limits their scope of use

Method used

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Examples

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Effect test

Embodiment 1

[0027] In an embodiment of the present invention, a co-extruded polyethylene film includes an outer layer, a middle layer and an inner layer; the raw materials of the outer layer include 22% of low-density polyethylene and 78% of medium-density polyethylene according to mass percentage; The raw materials include 50% of high-density polyethylene and 50% of low-density polyethylene; the raw materials of the inner layer include 55% of high molecular material, 28% of low-density polyethylene, 16.5% of linear low-density polyethylene and 0.5% of additives according to mass percentage. The mass ratio of outer layer: middle layer: inner layer is 3:5:1. Among them, low-density polyethylene can be LDPE2420H, LDPETN00, LDPETX00, etc.; medium-density polyethylene can be MDPE5401, MDPE7520NT, etc.; high-density polyethylene can be HDPE5000S, HDPE8008, etc.; linear low-density polyethylene can be LLDPE 7042, LLDPE1002, LLDPE920NT, LLDPE218W, etc.; the polymer material is a thermoplastic el...

Embodiment 2

[0029] In an embodiment of the present invention, a co-extruded polyethylene film includes an outer layer, a middle layer and an inner layer; the raw materials of the outer layer include 70% of low-density polyethylene and 30% of medium-density polyethylene according to mass percentage; The raw materials include 70% of high-density polyethylene and 30% of low-density polyethylene; the raw materials of the inner layer include 30% of high molecular material, 40% of low-density polyethylene, 29.7% of linear low-density polyethylene and 0.3% of additives according to mass percentage. The mass ratio of outer layer: middle layer: inner layer is 5:3:1. Among them, low-density polyethylene can be LDPE2420H, LDPETN00, LDPETX00, etc.; medium-density polyethylene can be MDPE5401, MDPE7520NT, etc.; high-density polyethylene can be HDPE5000S, HDPE8008, etc.; linear low-density polyethylene can be LLDPE 7042, LLDPE1002, LLDPE920NT, LLDPE218W, etc.; the polymer material is a thermoplastic el...

Embodiment 3

[0031] In an embodiment of the present invention, a co-extruded polyethylene film includes an outer layer, a middle layer and an inner layer; the raw materials of the outer layer include 50% of low-density polyethylene and 50% of medium-density polyethylene according to mass percentage; The raw materials include 65% of high-density polyethylene and 35% of low-density polyethylene; the raw materials of the inner layer include 45% of high molecular material, 35% of low-density polyethylene, 19.8% of linear low-density polyethylene and 0.2% of additives according to the mass percentage. The mass ratio of outer layer: middle layer: inner layer is 2:8:1. Among them, low-density polyethylene can be LDPE2420H, LDPETN00, LDPETX00, etc.; medium-density polyethylene can be MDPE5401, MDPE7520NT, etc.; high-density polyethylene can be HDPE5000S, HDPE8008, etc.; linear low-density polyethylene can be LLDPE 7042, LLDPE1002, LLDPE920NT, LLDPE218W, etc.; the polymer material is a thermoplasti...

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PUM

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Abstract

The invention discloses a co-extrusion polyethylene film and a film blowing forming process. The co-extrusion polyethylene film comprises an outer layer, a middle layer and an inner layer, wherein the outer layer is prepared from 22-70% of low-density polyethylene and 30-78% of medium-density polyethylene, the middle layer is prepared from 50-70% of high-density polyethylene and 30-50% of low-density polyethylene, and the inner layer is prepared from 30-55% of a high polymer material, 20-40% of low-density polyethylene, 15-30% of linear low-density polyethylene and 0.1-0.5% of additive. A three-layer co-extrusion film blowing machine is used for film blowing forming, and the co-extrusion polyethylene film large in surface tension is prepared through corona treatment and can be widely applied to surfaces of products needed in the fields of corrosion resistant steel plates, security doors, top-grade furniture, top-grade artware, floors, household appliance shells, instruments and meters and the like.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a co-extruded polyethylene film and its blown film forming process. Background technique [0002] Polyethylene material is a kind of thermoplastic resin obtained by polymerization of ethylene. It has excellent low temperature resistance, excellent electrical insulation, good chemical stability, and can withstand the erosion of most acids and alkalis. Polyethylene material at room temperature is insoluble in common solvents and has low water absorption, so it is widely used in the manufacture of films, hollow products, fibers and daily necessities. [0003] Due to the problem that polyethylene materials are difficult to print, common polyethylene materials are colorless or light-colored products, which greatly limits their scope of use. Contents of the invention [0004] The object of the present invention is to provide a kind of co-extrusion polyethylene film and its blown fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B37/06B32B37/10
Inventor 田相伦王怀超马志忠
Owner LINYI JIARUN PLASTIC PROD
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