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A kind of preparation method of wood grain paper

A technology of wood grain paper and kraft paper, which is applied in paper, papermaking, paper coating, etc., can solve the problems of complicated production process, achieve the effect of simple production process, rich and beautiful patterns, and shorten the printing process

Active Publication Date: 2018-06-19
DYNEA GUANGDONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production process has gone through two dipping and two drying processes, the production process is complicated, and the performance of the impregnated paper needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of wood grain paper, comprising the steps of:

[0025] a. Printing: use water-based ink to print the primary color kraft paper with a grammage of 40 g / m2;

[0026] B, dipping: the primary color kraft paper after printing is dipped with modified melamine resin, wherein, the modified melamine resin is made by modifying polyethylene glycol PEG; the solid content of the modified melamine resin is 56%; dipping amount is 200%;

[0027] c. Drying: The primary color kraft paper after dipping is dried, and then the finished product is rolled, wherein, the drying temperature is

[0028] 125-165°C, the drying area is divided into four control temperature sections, namely: low temperature, medium temperature, medium high temperature, and high temperature, and the running speed is 60 m / min; the pre-curing degree of the wood grain paper is 15%, and the volatilization 7.7%;

[0029] d. Hot press forming, the temperature of the hot press forming is 135° C., the ...

Embodiment 2

[0032] A preparation method of wood grain paper, comprising the steps of:

[0033] a. Printing: use water-based ink to print primary color kraft paper with a grammage of 60 g / m2;

[0034] B, dipping: the primary color kraft paper after printing is dipped with modified melamine resin, wherein the modified melamine resin is made by modifying polyethylene glycol PEG; the solid content of the modified melamine resin is 58 %; dipping amount is 220%;

[0035] c. Drying: The raw color kraft paper after dipping is dried, and then the finished product is rolled up. The drying temperature is 125-165°C, and the drying area is divided into four control temperature sections, namely: low temperature, Medium temperature, medium high temperature, high temperature, the running speed is 50 m / min; the pre-curing degree of the wood grain paper is 18%, and the volatile matter is 7.6%;

[0036] d. Hot press forming, the temperature of the hot press forming is 138° C., the pressure is 13 kgf, and ...

Embodiment 3

[0039] A preparation method of wood grain paper, comprising the steps of:

[0040] a. Printing: use water-based ink to print primary color kraft paper with a grammage of 80 g / m2;

[0041] b, dipping: dipping the printed primary color kraft paper with modified melamine resin, wherein the modified melamine resin is obtained by modifying diethylene glycol DEG; the solid content of the modified melamine resin is 60% ; The amount of dipping is 240%;

[0042] c. Drying: The raw color kraft paper after dipping is dried, and then the finished product is rolled up. The drying temperature is 125-165°C, and the drying area is divided into four control temperature sections, namely: low temperature, Medium temperature, medium high temperature, high temperature, the running speed is 35 m / min; the pre-curing degree of the wood grain paper is 20%, and the volatile matter is 7.9%;

[0043] d. Hot press forming, the temperature of the hot press forming is 140° C., the pressure is 12 kgf, and ...

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Abstract

The invention discloses a method for preparing woodgrained paper. The method includes the following steps of a, printing, wherein primary-color kraft paper is printed through water-based ink; b, gum dipping, wherein the printed primary-color kraft paper is subjected to gum dipping with modified melamine resin or modified phenolic resin, the modified melamine resin is modified through a plasticizer, and the modified phenolic resin is modified through melamine; c, drying, wherein the primary-color kraft paper subjected to gum dipping is dried; d, hot pressing molding. According to the method, the primary-color kraft paper is adopted, health hazards and environment pollution in the bleaching process of existing products are avoided, the woodgrained paper prepared with the method has the advantages of being heatproof, resistant to flame, free of warping and crazing and easy to clean, color and varieties are various, patterns are rich and attractive, and the color is fresh and bright.

Description

technical field [0001] The invention relates to the technical field of facing paper, in particular to a preparation method of wood grain paper. Background technique [0002] With the rapid development of industries such as laminate flooring, impregnated paper, decorative wood-based panels, furniture and decoration, the consumption of decorative paper continues to increase, the quality continues to improve, and the variety of designs and colors is increasingly rich. But most of the existing facing papers are through bleaching and dyeing processes. Some facing papers use oxidative bleaching agents, such as liquid chlorine, hypochlorite, etc., to complete the bleaching effect, so as to obtain high whiteness pulp. Some decorative papers are dyed by adding pigments of different colors when preparing paper materials. The chemicals used in the bleaching and dyeing process have certain health effects, and improper wastewater treatment can also cause environmental pollution. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H23/32D21H25/06B31F1/07D21H19/24
CPCB31F1/07D21H19/24D21H23/32D21H25/06
Inventor 边国民杨晓燕汪启鸿梁金兴林健明陈澄
Owner DYNEA GUANGDONG
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