Water-soluble film and preparation method thereof and water-soluble environment-friendly bag

A technology of water-soluble film and environmental protection bag, applied in the field of film processing, can solve the problems of high production cost of water-soluble film, unfavorable environmental protection, water-soluble film cannot be completely dissolved, etc., and achieves improved solubility, low production cost, and improved characteristics. Effect

Pending Publication Date: 2020-12-11
贺叔川
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Because the existing water-soluble film production relies on petroleum, the production cost of water-soluble film is high, and the water-soluble film made of petroleum cannot be completely dissolved, which is not conducive to environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A method for preparing a water-soluble film, the raw materials are composed of the following components by weight: 30 parts of pva polyvinyl alcohol, 8 parts of glycerol, 15 parts of water, 1 part of sodium carboxymethyl cellulose, 0.1 part of benzoic acid, two 0.1 part of benzophenone, 0.5 part of titanium dioxide, 1 part of anti-blocking agent, 1 part of stiffening agent, 5 parts of amylose, 5 parts of diethylene glycol, and 0.5 part of stearic acid.

[0037] S1: Material mixing: put pva polyvinyl alcohol, sodium carboxymethyl cellulose, benzophenone, titanium dioxide, and amylose into a mixer and stir; add glycerol, diethylene glycol, stearic acid, water , benzoic acid, anti-blocking agent, stiffening agent, mixed by heating in a high-speed mixer;

[0038] S2: Extrusion: Add the mixed material into the extruder through the feeder, extrude and granulate;

[0039] S3: film blowing: using a single-screw extruder to blow the particles obtained in step S2 to obtain a wat...

Embodiment 2

[0041] A method for preparing a water-soluble film. The raw materials are composed of the following components in parts by weight: 70 parts of pva polyvinyl alcohol, 30 parts of glycerol, 17 parts of water, 5 parts of sodium carboxymethyl cellulose, 1.5 parts of benzoic acid, 1 part of benzophenone, 3 parts of titanium dioxide, 10 parts of anti-blocking agent, 15 parts of stiffening agent, 20 parts of amylose, 15 parts of diethylene glycol, and 1.2 parts of stearic acid.

[0042] S1: Material mixing: put pva polyvinyl alcohol, sodium carboxymethyl cellulose, benzophenone, titanium dioxide, and amylose into a mixer and stir; add glycerol, diethylene glycol, stearic acid, water , benzoic acid, anti-blocking agent, stiffening agent, mixed by heating in a high-speed mixer;

[0043] S2: Extrusion: Add the mixed material into the extruder through the feeder, extrude and granulate;

[0044] S3: film blowing: using a single-screw extruder to blow the particles obtained in step S2 to ...

Embodiment 3

[0046] A method for preparing a water-soluble film. The raw materials are composed of the following components in parts by weight: 50 parts of pva polyvinyl alcohol, 19 parts of glycerol, 16 parts of water, 3 parts of sodium carboxymethyl cellulose, 0.8 parts of benzoic acid, 0.55 parts of benzophenone, 1.75 parts of titanium dioxide, 5.5 parts of anti-blocking agent, 8 parts of stiffening agent, 12.5 parts of amylose, 10 parts of diethylene glycol, and 1.35 parts of stearic acid.

[0047] S1: Material mixing: put pva polyvinyl alcohol, sodium carboxymethyl cellulose, benzophenone, titanium dioxide, and amylose into a mixer and stir; add glycerol, diethylene glycol, stearic acid, water , benzoic acid, anti-blocking agent, stiffening agent, mixed by heating in a high-speed mixer;

[0048] S2: Extrusion: Add the mixed material into the extruder through the feeder, extrude and granulate;

[0049] S3: film blowing: using a single-screw extruder to blow the particles obtained in s...

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Abstract

The invention discloses a water-soluble film and a preparation method thereof and a water-soluble environment-friendly bag, and belongs to the technical field of film processing. The water-soluble film provided by the invention is prepared from pva polyvinyl alcohol, glycerol, water, sodium carboxymethyl cellulose, benzoic acid, benzophenone, titanium dioxide, an anti-adhesion agent, a stiffness increasing agent, amylose, diethylene glycol and stearic acid, wherein the sodium carboxymethyl cellulose can improve the biomass content and improve the dissolvability of the water-soluble film, and the anti-adhesion agent and the stiffness increasing agent can improve the characteristics of the water-soluble film and improve the barrier property of the water-soluble film. According to the invention, the raw materials of the water-soluble film are natural, the dependence on petroleum products is reduced, the production cost is low, and the water-soluble film is more energy-saving and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of film processing, and in particular relates to a water-soluble film, a preparation method thereof, and a water-soluble environmental protection bag. Background technique [0002] At present, plastic products can be seen everywhere in daily production and life, and more and more plastic waste seriously affects the natural environment. [0003] Water-soluble film is a new type of environmentally friendly packaging material that can be rapidly degraded by natural factors (H2O) after special processing and processing. It can quickly denature, decompose, and degrade into low-molecular compounds through natural factors (H2O). improvement of the land. Water-soluble films have a tendency to replace plastics. [0004] Because the existing water-soluble film production depends on petroleum, the production cost of water-soluble film is high, and the water-soluble film made of petroleum cannot be completely dissolve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L1/28C08L3/12C08K13/02C08K3/22C08K5/09C08K5/07C08K5/06C08K5/053C08J5/18
CPCC08J5/18C08J2329/04C08J2401/28C08J2403/12C08K5/053C08K5/06C08K5/07C08K5/09C08K13/02C08K2003/2241
Inventor 贺叔川
Owner 贺叔川
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