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Reproducible paper-plastic compound bag and preparation method thereof

A composite bag, recycled paper technology, applied in the field of paper-plastic bag manufacturing, can solve the problems of poor degradation performance, poor regeneration ability, increase, etc., and achieve good biodegradability and photodegradability, excellent regeneration performance, and easy-to-obtain raw materials. Effect

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 composite bag is usually made of polypropylene or polyethylene. The traditional paper-plastic composite bag not only has poor degradation performance, but also has poor regeneration ability and cannot be recycled, resulting in waste of energy and increase in cost. Large, and most of them are disposed of by incineration, which seriously affects the natural environment and human health

Method used

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Examples

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Effect test

preparation example Construction

[0025] The present invention also provides a preparation method of a recyclable paper-plastic composite bag, the method comprising:

[0026] (1) Polypropylene, polyethylene, starch, polylactic acid, plant fiber, polyhydroxyalkanoate, polycaprolactone, poly-β-hydroxybutyric acid, epoxy resin, wood flour, aluminum sulfate, lactose, o-phthalic acid Dibutyl diformate and sodium stearate are mixed and extruded to make a film;

[0027] (2) Cutting, drawing and weaving the film into a plastic layer, and then sticking the plastic layer on the surface of the paper layer through an adhesive to make a composite paper; or heating the film And coated on the surface of the paper layer to form a plastic layer to make composite paper;

[0028] (3) Processing the composite paper machine into a recyclable paper-plastic composite bag.

[0029] In the above preparation method, the weight-average molecular weight of polyethylene can be selected in a wide range, in order to make the regeneration ...

Embodiment 1

[0042] (1) At 25°C, polypropylene, polyethylene, wheat starch, polylactic acid, rice husk fiber, hydroxybutyric acid caproic acid copolyester, polycaprolactone, polyβ-hydroxybutyric acid, epoxy resin, Wood flour, aluminum sulfate, lactose, dibutyl phthalate and sodium stearate (the mass ratio of each raw material is 100:33:18:27:18:22:18:16:8:7:6: 3:4:2) mixed for 2 hours, and extruded at 240°C to make a 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 machine into a recyclable paper-plastic composite bag A1.

Embodiment 2

[0046] (1) At 25°C, polypropylene, polyethylene, potato starch, polylactic acid, bamboo fiber, hydroxybutyric acid caproic acid copolyester, polycaprolactone, polyβ-hydroxybutyric acid, epoxy resin, Wood flour, aluminum sulfate, lactose, dibutyl phthalate and sodium stearate (the mass ratio of each raw material is 100:30:18:27:18:22:18:16:8:7:6: 1:2:1) mixed for 2 hours, and extruded at 240°C to make a 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 1.1:1);

[0048] (3) Process the above-mentioned composite paper machine into a recyclable paper-plastic composite bag A2.

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Abstract

The invention discloses a reproducible paper-plastic compound bag and a preparation method thereof. The paper-plastic compound bag comprises a plastic layer and a paper layer, wherein the plastic layer is positioned on the surface of the paper layer; the plastic layer comprises polypropylene, polyethylene, starch, polylactic acid, plant fiber, polyhydroxyalkanoate, polycaprolactone, poly-beta-hydroxybutyrate, epoxy resin, wood powder, aluminum sulfate, lactose, dibutyl phthalate and sodium stearate. The reproducible paper-plastic compound bag has excellent regeneration performance and degradation performance, and the preparation method is simple, convenient and practical and is low in cost.

Description

technical field [0001] The invention relates to the field of paper-plastic bag manufacturing, in particular to a recyclable paper-plastic composite bag and a preparation method thereof. Background technique [0002] Paper-plastic composite bags have the characteristics of high strength, good waterproof performance, and beautiful appearance. They have been widely used in people's daily life. As a small bulk container, paper-plastic composite bags are mainly transported in units by manpower or forklifts. It is convenient for shipping small batches of bulk powder and granular materials. It has the characteristics of high strength, good water resistance, beautiful appearance, and easy loading and unloading. It is the most popular and practical general packaging material at present. [0003] At present, the plastic layer of the paper-plastic composite bag is usually made of polypropylene or polyethylene. The traditional paper-plastic composite bag not only has poor degradation pe...

Claims

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Application Information

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IPC IPC(8): B65D30/08B32B27/10C08L23/12C08L23/06C08L3/02C08L67/04C08L97/02C08L63/00C08K13/02C08K3/30C08K5/098C08K5/12C08K5/1545
CPCY02W90/10
Inventor 陈可夏陈可亮
Owner TONGLING FOUNDER PLASTICS TECH
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