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Fluorine-free waterproof and oil-proof agent used in paper pulp molding pulp and use method of fluoride-free waterproof and oil-proof agent

A technology of pulp molding, fluorine-free waterproofing, applied in the direction of papermaking, textiles and papermaking, non-fiber pulp addition, etc., can solve the problems of weak barrier performance, achieve good waterproof and oilproof, improve mechanical strength, and be easy to promote.

Active Publication Date: 2022-03-11
CHINA NAT PULP & PAPER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Pulp molded food packaging has the advantages of natural source, green environmental protection, safety and sanitation, easy degradation and recycling, etc. It is more and more favored by consumers and the market in the field of food packaging , but the packaging product is mainly composed of natural plant fibers, the main chemical components are hydrophilic cellulose and hemicellulose, there are a large number of hydroxyl groups in the molecular structure, the formed structure is loose and porous, has a certain liquid absorption, and is resistant to air and water. The barrier performance of substances such as oil and grease is weak

Method used

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  • Fluorine-free waterproof and oil-proof agent used in paper pulp molding pulp and use method of fluoride-free waterproof and oil-proof agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A fluorine-free waterproof and oil-repellent agent for pulp molding pulp is made of the following components and mass percentages: 67.5 parts of deionized water, 2 parts of CMC, 3 parts of butyl acrylate, 2.5 parts of modified starch, and 5 parts of edible wax emulsion 20 parts, talcum powder.

[0026] The method of using the fluorine-free water and oil repellent in the pulp molding pulp is as follows:

[0027] (1) Add 2 parts of CMC and 3 parts of butyl acrylate into 30 parts of deionized water, stir and mix evenly to obtain mixed solution A;

[0028] (2) Add 2.5 parts of modified starch into 37.5 parts of deionized water, stir and mix evenly at a constant temperature of 85±1°C, and then cool to room temperature to obtain a modified starch solution;

[0029] (3) Disperse 5 parts of edible wax emulsion and 20 parts of talcum powder in the modified starch solution, and carry out mechanical stirring for 5 minutes, and then ultrasonically vibrate for 5 minutes in an ultra...

Embodiment 2

[0033] A fluorine-free waterproof and oil-repellent agent for pulp molding pulp is made of the following components and mass percentages: 76.5 parts of deionized water, 0.5 parts of CMC, 5 parts of butyl acrylate, 5 parts of modified starch, and 3 parts of edible wax emulsion 10 parts, 10 parts of talcum powder.

[0034] The method of using the fluorine-free water and oil repellent in the pulp molding pulp is as follows:

[0035] (1) Add 0.5 parts of CMC and 5 parts of butyl acrylate into 26.5 parts of deionized water, stir and mix evenly to obtain mixed solution A;

[0036] (2) Add 5 parts of modified starch to 50 parts of deionized water, stir and mix evenly at a constant temperature of 90±1°C, and then cool to room temperature to obtain a modified starch solution;

[0037] (3) Disperse 3 parts of edible wax emulsion and 10 parts of talcum powder in the modified starch solution, and perform mechanical stirring for 15 minutes, and then ultrasonically vibrate for 8 minutes in...

Embodiment 3

[0041] A fluorine-free waterproof and oil-repellent agent for pulp molding pulp is made of the following components and mass percentages: 37 parts of deionized water, 3 parts of CMC, 1 part of butyl acrylate, 1 part of modified starch, and 8 parts of edible wax emulsion 30 parts, 30 parts of talcum powder, 20 parts of kaolin.

[0042] The method of using the fluorine-free water and oil repellent in the pulp molding pulp is as follows:

[0043] (1) Add 3 parts of CMC and 1 part of butyl acrylate into 27 parts of deionized water, stir and mix evenly to obtain mixed solution A;

[0044] (2) Add 1 part of modified starch to 10 parts of deionized water, stir and mix evenly at a constant temperature of 95±1°C, and then cool to room temperature to obtain a modified starch solution;

[0045] (3) Disperse 8 parts of edible wax emulsion, 30 parts of talcum powder and 20 parts of kaolin in the modified starch solution, and perform mechanical stirring for 30 minutes, and then ultrasonica...

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Abstract

The invention relates to the field of paper pulp molding, and particularly discloses a fluoride-free water-proof and oil-proof agent added in pulp and a use method of the fluoride-free water-proof and oil-proof agent added in the pulp. The adhesive is prepared from the following components in percentage by mass: 29.5-84.5 parts of deionized water, 0.5-3 parts of an adhesive, 1-5 parts of a butyl acrylate polymer, 1-5 parts of modified starch, 3-8 parts of an edible wax emulsion and 10-50 parts of a flaky functional material. The fluoride-free water-proof and oil-proof agent can be directly added into paper pulp to be stirred, gaps among fibers are filled in the fluoride-free water-proof and oil-proof agent in the pulp absorption process, or the fluoride-free water-proof and oil-proof agent is attached to the surface layers of the fibers, and then water-proof and oil-proof paper pulp molding is obtained after dehydration, wet pressing and dry pressing. The fluoride-free waterproof and oil-proof agent disclosed by the invention has the characteristics of environmental friendliness, simple and convenient use method and good oil-proof effect, and is particularly suitable for paper pulp molded food packaging.

Description

technical field [0001] The invention belongs to the waterproof and oil-proof field of pulp molded food packaging, and in particular relates to a fluorine-free water and oil-proof agent used in pulp in the production process of pulp molded food packaging products and its use method. Background technique [0002] Pulp molded food packaging has the advantages of natural sources, green environmental protection, safety and hygiene, and easy degradation and recycling. It is more and more favored by consumers and the market in the field of food packaging. It is hydrophilic cellulose and hemicellulose, there are a lot of hydroxyl groups in the molecular structure, the formed structure is loose and porous, has a certain liquid absorption, and has weak barrier properties to air, water and oil and other substances. [0003] A more common solution is to add water and oil repellents to the pulp during the production of pulp molded food packaging. Fluorine-containing oil repellents are th...

Claims

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Application Information

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IPC IPC(8): D21H21/14D21J3/00
CPCD21H21/14D21J3/00
Inventor 程芸张红杰张雪
Owner CHINA NAT PULP & PAPER RES INST CO LTD