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Waterproof paper-plastic compound bag and preparation method thereof

A composite bag, waterproof paper technology, applied in the field of paper-plastic bag manufacturing, can solve the problems of deformation, loss of function, unfavorable large-scale use, etc., and achieve the effects of easy availability of raw materials, good biodegradation performance, and simple steps

Active Publication Date: 2015-09-23
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 paper-plastic bags is usually made of starch or polypropylene, and the paper layer is usually made of kraft paper or corrugated paper. These materials will soften or even dissolve when they encounter water. The formed paper-plastic composite bag will deform and lose its function when it encounters water, which is not conducive to large-scale use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The present invention also provides a method for preparing a waterproof paper-plastic composite bag, characterized in that the method comprises:

[0033] (1) polyacrylate and modifying agent are compounded to obtain modified polyacrylate;

[0034] (2) Starch, polyvinyl alcohol, poly-β-hydroxybutyrate, modified polyacrylate, high-density polyethylene, dicumyl peroxide, polyisobutylene, polyester fiber, lactose, glycerin, phthalate Dimethyl formate and epoxy resin. Mix evenly and extrude to make a film;

[0035] (3) 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;

[0036] (4) Machine processing the composite paper into a waterproof paper-plastic composite bag.

[0037] In the above preparation method, the modifier can be any mo...

Embodiment 1

[0054] (1) At 25°C, compound polyacrylate and silicone oil (mass ratio 100:20) at 70°C for 4 hours to prepare modified polyacrylate;

[0055] (2) At 25°C, wheat starch (weight average molecular weight is 12000), polyvinyl alcohol (weight average molecular weight is 16000), poly-β-hydroxybutyrate (weight average molecular weight is 12000), modified polyacrylate (weight average molecular weight is 22000), high-density polyethylene (weight average molecular weight is 40000), dicumyl peroxide (weight average molecular weight is 18000), polyisobutylene (weight average molecular weight is 20000), polyester fiber (weight average Molecular weight is 15000), lactose, glycerin, dimethyl phthalate and epoxy resin (weight average molecular weight is 4000) (mass ratio of raw materials is 100:10:5:30:15:5:12:5: 1:1:3:1) mixed for 2 hours, and extruded at 240°C to obtain a film.

[0056] (3) film cutting, wire drawing, weaving into plastic layer, then the plastic layer is stuck on the surfa...

Embodiment 2

[0059] (1) At 25°C, compound polyacrylate and silicone oil (mass ratio 100:15) at 50°C for 3 hours to prepare modified polyacrylate.

[0060] (2) At 25°C, wheat starch (weight average molecular weight is 12000), polyvinyl alcohol (weight average molecular weight is 16000), poly-β-hydroxybutyrate (weight average molecular weight is 12000), modified polyacrylate (weight average molecular weight is 22000), high-density polyethylene (weight average molecular weight is 40000), dicumyl peroxide (weight average molecular weight is 18000), polyisobutylene (weight average molecular weight is 20000), polyester fiber (weight average Molecular weight is 15000), lactose, glycerin, dimethyl phthalate and epoxy resin (weight average molecular weight is 4000) (mass ratio of raw materials is 100:10:5:30:15:5:12:5: 1:1:3:1) mixed for 2 hours, and extruded at 240°C to obtain a film.

[0061] (3) The film is cut, drawn, and woven into a plastic layer, and then the plastic layer is adhered to the...

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PUM

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Abstract

The invention discloses a waterproof paper-plastic compound bag and a preparation method thereof. The waterproof paper-plastic compound bag comprises a plastic layer and a paper layer, wherein the plastic layer is arranged on the surface of the paper layer; the plastic layer comprises starch, polyvinyl alcohol, poly-beta-polyhydroxybutyrate, modified polyacrylate, high density polyethylene, dicumyl peroxide, polyisobutene, polyester fiber, lactose, glycerol, dimethyl phthalate and epoxy resin; the modified polyacrylate comprises a modifying agent and polyacrylate that are mutually compounded; and the modifying agent comprises one or more of organosilicon, organic fluorine and polyurethane. The preparation method of the waterproof paper-plastic compound bag is simple in step, and the raw materials are easy to obtain, so that large-scale industrial production of the waterproof paper-plastic compound bag can be conducted.

Description

technical field [0001] The invention relates to the field of paper-plastic bag manufacturing, in particular to a waterproof 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 paper-plastic bags is usually made of starch or polypropylene, and the paper layer is usually made of kraft paper or corrugated paper. These materials will soften or even dissolve when they encounter water. The formed paper-plastic composite bag will deform and lose its function when it encounters water, which is not conducive to large-scale use. Contents of the invention [0004] In view of the above-mentioned prior art...

Claims

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Application Information

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IPC IPC(8): B65D30/02C08L3/02C08L29/04C08L67/04C08L33/04C08L23/06C08L67/00C08L23/22C08L63/00C08L83/04C08K13/02C08K5/14C08K5/12C08K5/053
CPCY02W90/10
Inventor 陈可夏陈可亮
Owner TONGLING FOUNDER PLASTICS TECH
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