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A kind of production technology of preimpregnated paper

A production process and pre-impregnation technology, applied in the field of production process of pre-impregnated paper, can solve the problems of poor process adaptability, poor printing effect, insufficient permeability, etc., and achieve the effects of low cost, good economy and low process cost.

Active Publication Date: 2021-08-27
浙江夏王纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The impregnation materials used in the existing pre-impregnated papers have the following defects: 1. The existing pre-impregnated papers are generally only coated on one side, which saves the complete impregnation process of conventional impregnated papers, so the overall permeability is insufficient and the effect of the impregnated technology is difficult. Guarantee, production quality is difficult to control
2. Existing impregnation materials for pre-impregnated paper use a large amount of organic solvents (such as urea-formaldehyde or melamine), which has potential safety hazards and is not environmentally friendly
3. Since pre-impregnated paper is a non-absorbent or difficult-to-absorb material, the existing pre-impregnated materials cannot be directly applied to pre-impregnated paper due to insufficient penetration and poor bonding with the plant fibers of the base paper itself, resulting in poor process adaptability ; 4. The existing pre-impregnated materials generally do not have good adhesion to pre-impregnated paper, and the printing effect is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A production process for pre-impregnated paper comprising the following stages:

[0026] 1) Preparation

[0027] ① Raw material preparation: prepare 580Kg of residual distiller's grains solid content, 920Kg of Mazhuzhuhuang, 86Kg of paulownia sawdust, 135Kg of pine sawdust, 54Kg of acrylic acid monomer, and kaolin powder after corn brewing with a mass fraction of residual starch content of 15%. 220Kg;

[0028] ②Auxiliary material preparation: prepare a sufficient amount of pectinase water solution, a sufficient amount of sodium hydroxide aqueous solution with a mass fraction of 5% solute, 1.2Kg of potassium persulfate, and a sufficient amount of hydrogen peroxide aqueous solution;

[0029] 2) Pre-preparation of pre-impregnated raw material glue

[0030] ①Immerse the solid content of residual distiller's grains prepared in stage 1) step ① completely into the pectinase water solution prepared in stage 1) step ② which is 1.2-1.5 times its mass, raise the temperature to 3...

Embodiment 2

[0043] The whole is consistent with Example 1, the difference is:

[0044] A production process for pre-impregnated paper comprising the following stages:

[0045] 1) Preparation

[0046] 1. Raw material preparation: prepare 500Kg of residual distiller's grains solid content, 1000Kg of bamboo bamboo yellow, 200Kg of paulownia sawdust, 50Kg of acrylic acid monomer, and 200Kg of kaolin powder after the maize brewing with a residual starch content mass fraction of 21% by weight;

[0047] ②Auxiliary material preparation: prepare a sufficient amount of sodium hydroxide aqueous solution with a mass fraction of 5% of the solute, and 1Kg of potassium persulfate;

Embodiment 3

[0049] The whole is consistent with Example 1, the difference is:

[0050] A production process for pre-impregnated paper comprising the following stages:

[0051] 1) Preparation

[0052] 1. Raw material preparation: prepare 600Kg of residual distiller's grains solid content, 800Kg of bamboo and bamboo yellow, 250Kg of pine sawdust, 70Kg of acrylic acid monomer, and 250Kg of kaolin powder after the corn brewing with a residual starch content mass fraction of 12% by weight;

[0053] ②Auxiliary material preparation: prepare a sufficient amount of sodium hydroxide aqueous solution with a mass fraction of 8% of the solute, and 1.5Kg of potassium persulfate;

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PUM

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Abstract

The invention discloses a production process of pre-impregnated paper. The invention uses residual distiller's grains solid content after brewing of corn with residual starch, bamboo and bamboo yellow, sawdust, sawdust, acrylic acid monomer and kaolin powder as raw materials; Pectinase water solution, sodium hydroxide aqueous solution, potassium persulfate, and hydrogen peroxide aqueous solution are used as auxiliary materials. After partial carbonization of base paper fibers, plant source pre-impregnated raw materials, external coating and internal penetration, single-sided brush coating, deep penetration reaction, gluing, coating Cloth molding is finally made. The invention has the advantages of low cost, strong prepreg penetration, good prepreg binding force, environmentally friendly raw materials and simple process.

Description

technical field [0001] The invention relates to the technical field of papermaking technology, in particular to a production technology of pre-impregnated paper. Background technique [0002] The impregnation materials used in the existing pre-impregnated papers have the following defects: 1. The existing pre-impregnated papers are generally only coated on one side, which saves the complete impregnation process of conventional impregnated papers, so the overall permeability is insufficient and the effect of the impregnated technology is difficult. Guarantee, production quality is more difficult to control. 2. Existing impregnation materials for pre-impregnated paper use a large amount of organic solvents (such as urea-formaldehyde or melamine), which has potential safety hazards and is not environmentally friendly. 3. Since pre-impregnated paper is a non-absorbent or difficult-to-absorb material, the existing pre-impregnated materials cannot be directly applied to pre-impre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/12D21H11/16D21H17/68D21C5/00D21H17/02D21H19/34D21H19/14D21C9/16B27M1/06
CPCB27M1/06D21C5/005D21C9/16D21C9/163D21H11/12D21H11/16D21H17/02D21H17/68D21H19/14D21H19/34
Inventor 骆志荣王瑾徐匡荣孙代杰李朝廷
Owner 浙江夏王纸业有限公司