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Wear-resistant paper-plastic composite bag and preparation method for same

A paper-plastic composite bag, wear-resistant technology, applied in the field of paper-plastic bag manufacturing, can solve problems such as cracking, affecting the normal use of paper-plastic bags, and wrinkling of the plastic layer, achieving excellent wear resistance and suitable for large-scale production , the effect of mild reaction conditions

Active Publication Date: 2015-09-16
TONGLING FOUNDER PLASTICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the plastic layer of the paper-plastic bag is usually made of starch or polypropylene. When the existing paper-plastic bag encounters a large friction force applied by the outside world, the surface of the plastic layer will wrinkle or even rupture, which seriously affects the quality of the paper. The normal use of plastic bags, and the traditional method of preparing paper-plastic bags is complicated and cannot be mass-produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0026] The present invention also provides a method for preparing a wear-resistant paper-plastic composite bag, the method comprising:

[0027] (1) Polypropylene, polyethylene, epoxy resin, ultra-high molecular weight polyethylene, silicone, phenolic resin, glass fiber, polytetrafluoroethylene, molybdenum disulfide, glycerin, dimethyl phthalate and hard Sodium bicarbonate is mixed and then extruded to form a film;

[0028] (2) The film is heated and coated on the surface of the paper layer to form a plastic layer to make a composite paper; or the film is cut, drawn and woven into a plastic layer, and then the plastic layer is glued Adhesive is stuck on the surface of described paper layer to make composite paper;

[0029] (3) Processing the composite paper into a wear-resistant paper-plastic composite bag.

[0030] In the above-mentioned preparation method, the weight-average molecular weight of polypropylene can be selected in a wide range, but from the consideration of imp...

Embodiment 1

[0042] (1) At 25°C, polypropylene (weight average molecular weight is 90000), polyethylene (weight average molecular weight is 18000), epoxy resin (weight average molecular weight is 6000), ultra-high molecular weight polyethylene (weight average molecular weight is 1600000), silicone (weight average molecular weight 18000), phenolic resin (weight average molecular weight 15000), glass fiber, polytetrafluoroethylene (weight average molecular weight 25000), molybdenum disulfide, glycerin, dimethyl phthalate Ester and sodium stearate (the mass ratio of raw materials is 100:12:25:18:14:17:10:16:13:2:3:4) were mixed for 2 hours, and extruded at 210°C to obtain film;

[0043] (2) Heating the film to 230°C and coating it on the surface of the paper layer to form a plastic layer to make a composite paper (the thickness ratio of the paper layer to the plastic layer is 1:1);

[0044] (3) Process the above-mentioned composite paper into a wear-resistant paper-plastic composite bag A1. ...

Embodiment 2

[0046] (1) At 25°C, polypropylene (weight average molecular weight is 80000), polyethylene (weight average molecular weight is 14000), epoxy resin (weight average molecular weight is 4000), ultra-high molecular weight polyethylene (weight average molecular weight is 1500000), silicone (weight average molecular weight 15000), phenolic resin (weight average molecular weight 12000), glass fiber, polytetrafluoroethylene (weight average molecular weight 20000), molybdenum disulfide, glycerin, dimethyl phthalate Ester and sodium stearate (the mass ratio of raw materials is 100:10:25:18:14:17:10:16:13:1:2:1) were mixed for 2 hours, and extruded at 210°C to obtain film;

[0047] (2) heating the film to 230° C. and coating it on the surface of the paper layer to form a plastic layer to make a composite paper (the thickness ratio of the paper layer to the plastic layer is 1.05:1);

[0048] (3) Process the above-mentioned composite paper into a wear-resistant paper-plastic composite bag...

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Abstract

The invention discloses a wear-resistant paper-plastic composite bag and a preparation method for the same. The wear-resistant paper-plastic composite bag comprises a plastic layer and a paper layer, wherein the plastic layer is arranged on the surface of the paper layer, and comprises polypropylene, polyethylene, epoxy resin, ultrahigh molecular weight polyethylene, organic silicon, phenol formaldehyde resin, fiberglass, polytetrafluoroethylene, molybdenum dioxide, glycerin, dimethyl phthalate and sodium stearate. The wear-resistant paper-plastic composite bag has high wear resistance, and the preparation method is convenient, easy, mild in condition and suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of paper-plastic bag manufacturing, in particular to a wear-resistant paper-plastic composite bag and a preparation method thereof. Background technique [0002] As a convenient storage device, paper-plastic bags have been widely used in people's daily life to transport small bulk powder and granular materials. ， It is a very commonly used packaging material at present. A paper-plastic bag is a composite paper bag, including a paper layer and a plastic layer. [0003] At present, the plastic layer of the paper-plastic bag is usually made of starch or polypropylene. When the existing paper-plastic bag encounters a large friction force applied by the outside world, the surface of the plastic layer will wrinkle or even rupture, which seriously affects the quality of the paper. The normal use of plastic bags, and the traditional paper-plastic bag preparation method steps are complicated and cannot be mass-produced. Co...

Claims

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Application Information

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IPC IPC(8): B65D30/08B32B27/10
Inventor 陈可夏陈可亮
Owner TONGLING FOUNDER PLASTICS TECH
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