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A kind of papermaking process of secondary pulp external glue water writing paper

A process and glue technology, which is applied in the field of secondary pulp externally glued water writing paper copying process, can solve the problems of increasing environmental protection costs, achieve the effects of saving wood, facilitating industrialized mass production, and solving the problem of unable to print dots and read codes

Active Publication Date: 2018-06-15
张国松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects in the prior art and provide a reasonable process design, improve the production efficiency of water-based writing paper, greatly reduce the production cost of water-based writing paper, and will not bring environmental protection problems to paper-making enterprises and increase environmental protection expenses. A kind of papermaking process of secondary pulp externally applied glue water writing paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A kind of papermaking process of water-based paper with external glue applied to secondary pulp, comprising the following steps:

[0046] Step 1: Soak commercial wood pulp, straw pulp, and bamboo pulp in pulp tanks for 1 to 3 hours, make them fully absorb water and disperse, then dehydrate, wash, and sieve impurities before entering the next process; the straw pulp is either straw pulp or wheat straw pulp;

[0047] Step 2: Perform beating treatment on the pulp after dehydration, washing, and sieving of impurities in the form of free long fiber beating, with a beating degree of 20° to 24°, to obtain qualified papermaking pulp;

[0048] Step 3: Input the obtained qualified slurry into the high-frequency deflaking machine for deflaking;

[0049] Step 4: Obtain qualified papermaking pulp after mixing the decomposed wood pulp, straw pulp and bamboo pulp;

[0050] Step 5: Use the qualified papermaking pulp to make paper with a sandwich paper machine. The pulp flow is sent t...

Embodiment 2

[0055] A kind of papermaking process of water-based paper with external glue applied to secondary pulp, comprising the following steps:

[0056] Step 1: Soak commercial wood pulp, straw pulp, and bamboo pulp in pulp tanks for 1 to 3 hours, make them fully absorb water and disperse, then dehydrate, wash, and sieve impurities before entering the next process; the straw pulp is either straw pulp or wheat straw pulp;

[0057] Step 2: Perform beating treatment on the pulp after dehydration, washing, and sieving of impurities in the form of free long fiber beating, with a beating degree of 20° to 24°, to obtain qualified papermaking pulp;

[0058] Step 3: Input the obtained qualified slurry into the high-frequency deflaking machine for deflaking;

[0059] Step 4: Obtain qualified papermaking pulp after mixing the decomposed wood pulp, straw pulp and bamboo pulp;

[0060] Step 5: Use the qualified papermaking pulp to make paper with a sandwich paper machine. The pulp flow is sent to ...

Embodiment 3

[0065] A kind of papermaking process of water-based paper with external glue applied to secondary pulp, comprising the following steps:

[0066] Step 1: Soak commercial wood pulp, straw pulp, and bamboo pulp in pulp tanks for 1 to 3 hours, make them fully absorb water and disperse, then dehydrate, wash, and sieve impurities before entering the next process; the straw pulp is either straw pulp or wheat straw pulp;

[0067] Step 2: Perform beating treatment on the pulp after dehydration, washing, and sieving of impurities in the form of free long fiber beating, with a beating degree of 20° to 24°, to obtain qualified papermaking pulp;

[0068] Step 3: Input the obtained qualified slurry into the high-frequency deflaking machine for deflaking;

[0069] Step 4: Obtain qualified papermaking pulp after mixing the decomposed wood pulp, straw pulp and bamboo pulp;

[0070] Step 5: Use the qualified papermaking pulp to make paper with a sandwich paper machine. The pulp flow is sent t...

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Abstract

The invention belongs to a secondary pulp external sizing water-writing paper making technology which includes the steps: pulp dispersion; dewatering and washing; impurity screening; pulping; untwining; pulp mixing; paper making; primary sizing treatment; drying; calendaring; secondary sizing treatment; after-drying; polishing; shearing; coiling to form paper. Black base sizing agents are applied in primary sizing treatment, and white developing layer sizing agents are applied in secondary sizing treatment. The secondary pulp external sizing water-writing paper making technology particularly includes the steps: soaking commercial wood pulp, straw pulp and bamboo pulp into a pulp chest for 1-3 hours; sufficiently absorbing water and dispersing the pulp; performing dewatering, washing and impurity screening and then entering a next procedure. The straw pulp is one of rice straw pulp or wheat straw pulp. The secondary pulp external sizing water-writing paper making technology has the advantages that water-writing paper making is accelerated, industrial mass production is facilitated, and the production cost of the water-writing paper can be reduced by 50% or more.

Description

technical field [0001] The invention belongs to the technical field of water-based paper making, and in particular relates to a paper-making process for water-based paper with external sizing of secondary pulp. Background technique [0002] Since the advent of water writing cloth, single-sided water writing paper, and double-sided water writing paper, it has brought great convenience to the majority of calligraphy and painting learners; at the same time, it has also made contributions to energy conservation and emission reduction. However, in view of the characteristics of water writing cloth, it cannot be printed into a book; the coating process of water writing paper is limited, and the finished water writing paper is mainly a single sheet, which is not suitable for roller printing. There is a certain amount of dust, which causes a lot of inconvenience during the printing process, which affects the printing speed and quality; at the same time, whether it is water-based wri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F9/00D21H23/56
CPCD21F9/00D21H23/56
Inventor 张国松
Owner 张国松
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