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Abrasion-resistant paper-plastic composite bag and preparation method thereof

A composite food and wear-resistant paper technology, applied in the field of food bags, can solve problems such as moisture-prone, food quality-affected, and easily decomposed food

Inactive Publication Date: 2016-10-12
TONGLING FOUNDER PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Food bags generally include plastic food bags, paper food bags and paper-plastic composite food bags. Plastic food bags are widely used because of their waterproof, high mechanical strength and light weight; It is easy to deform and break during the process, and the additives in the plastic food bag are easy to decompose and cause food pollution
[0003] Paper food bags are prone to moisture during use, which will affect the quality of the food they contain; in addition, the burst index of paper-plastic composite food bags is not high, and they are prone to damage during use.

Method used

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Examples

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Effect test

preparation example Construction

[0010] The invention discloses a preparation method of a wear-resistant paper-plastic composite food bag, comprising: 1) mixing polyethylene resin, phenolic resin, polyurethane, glycerin, hydrotalcite, molybdenum disulfide, tricresyl phosphate and stearic acid Calcium mixing, heat treatment and extrusion molding to obtain plastic granules; 2) heating and coating the plastic granules on the surface of the paper layer to form a plastic covering layer to obtain wear-resistant paper-plastic composite paper; 3) applying the Paper-plastic composite paper is processed into wear-resistant paper-plastic composite food bags.

[0011] In the present invention, in order to improve the mechanical strength of the prepared wear-resistant paper-plastic composite food bag, preferably, the paper layer is kraft paper or graphite paper.

[0012] In the present invention, the molecular weight of polyethylene resin, phenolic resin and polyurethane can be selected in a wide range, in order to improv...

Embodiment 1

[0020] 1) Polyethylene resin (weight average molecular weight is 50,000), phenolic resin (weight average molecular weight is 30,000), polyurethane (weight average molecular weight is 30,000), glycerin, hydrotalcite, molybdenum disulfide, phosphoric acid are mixed at 30°C Tricresyl ester and calcium stearate (according to weight ratio 100:10:10:11:10:11:2:1) were mixed for 0.5h; followed by heat treatment at 185°C for 6h; finally extruded at 185°C to obtain plastic particles;

[0021] 2) Heating the prepared plastic particles at 100°C for 1.5h and coating them on the surface of kraft paper to form a plastic covering layer to obtain wear-resistant paper-plastic composite paper;

[0022] 3) Processing the paper-plastic composite paper into a wear-resistant paper-plastic composite food bag A1.

Embodiment 2

[0024] 1) Polyethylene resin (weight average molecular weight of 40,000), phenolic resin (weight average molecular weight of 20,000), polyurethane (weight average molecular weight of 20,000), glycerin, hydrotalcite, molybdenum disulfide, phosphoric acid were mixed at 35°C Tricresyl ester and calcium stearate (according to the weight ratio 100:20:20:20:13:13:6:3) were mixed for 1 hour; followed by heat treatment at 190°C for 5 hours; finally extruded at 195°C to obtain plastic granules ;

[0025] 2) Heating the prepared plastic particles at 110°C for 1 hour and coating them on the surface of kraft paper to form a plastic covering layer, so as to obtain wear-resistant paper-plastic composite paper;

[0026] 3) Processing the paper-plastic composite paper into a wear-resistant paper-plastic composite food bag A2.

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PUM

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Abstract

The invention discloses a preparation method of an abrasion-resistant paper-plastic composite bag. The preparation method includes the steps that 1, polyethylene resin, phenolic resin, polyurethane, glycerol, hydrotalcite, molybdenum disulfide, tricresyl phosphate and calcium stearate are mixed, are subjected to heat treatment and then are subjected to extrusion molding to obtain plastic particles; 2, the plastic particles are heated and applied to the surface of a paper layer to form a plastic covering layer so as to prepare abrasion-resistant paper-plastic composite paper; 3, the paper-plastic composite paper is processed into the abrasion-resistant paper-plastic composite bag. The abrasion-resistant paper-plastic composite bag prepared by means of the method has high burst index and high mechanical strength, the raw materials are easy to obtain, and quantitative production can be achieved.

Description

technical field [0001] The invention relates to a food bag, in particular to a wear-resistant paper-plastic composite food bag and a preparation method thereof. Background technique [0002] Food bags are indispensable in people's daily life and bring great convenience to people in food storage and transportation. Food bags generally include plastic food bags, paper food bags and paper-plastic composite food bags. Plastic food bags are widely used because of their waterproof, high mechanical strength and light weight; It is easy to deform and break during the process, and the additives in the plastic food bag are easy to decompose and cause food pollution. [0003] Paper food bags are prone to moisture during use, which will affect the quality of the food they contain; in addition, the burst index of paper-plastic composite food bags is not high, and they are prone to damage during use. Contents of the invention [0004] The purpose of the present invention is to provide...

Claims

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Application Information

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IPC IPC(8): D21H19/38D21H19/46D21H19/62D21H19/56D21H21/14
CPCD21H19/38D21H19/46D21H19/56D21H19/62D21H21/14
Inventor 陈可夏陈可亮
Owner TONGLING FOUNDER PLASTICS TECH
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