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Production process of raw material for coated white board paper

A production process and technology of whiteboard paper, applied in the directions of fiber raw material, raw material separation, fiber raw material processing, etc., can solve the problems affecting the thickness of coated whiteboard paper, the quality of waste paper fiber, and the shortage of waste paper raw materials, etc. Collection and application, low equipment cost, improved paper thickness

Active Publication Date: 2012-09-19
DONGGUAN NINE DRAGONS PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the application of coated white board paper is becoming more and more extensive, its production volume is increasing year by year, and the number of recycling of various waste paper raw materials is increasing. The waste paper raw materials are relatively tight, resulting in price increases; Decreased fiber quality, affecting the thickness of coated white board paper
While using wood pulp to make paper, although the quality of the whiteboard paper obtained is better, but when wood pulp is used to make paper, the lignin in the wood needs to be removed first, the process is complicated, the production cost is extremely high, and when pure wood pulp paper is made, due to the low freeness , dehydration is slow, the speed of the vehicle will decrease, and the processing efficiency will be low
[0005] In view of the deficiencies of the existing technology, there is an urgent need for a new raw material that is cheaper than waste paper raw materials and can increase the thickness of the paper to make up for the cost increase and thickness decrease of coated white board paper caused by waste paper being recycled many times.

Method used

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  • Production process of raw material for coated white board paper
  • Production process of raw material for coated white board paper

Examples

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Embodiment 1

[0037] like figure 1 As shown, the production process of a kind of raw material for coating white board paper in the present embodiment comprises the following process steps: Log milling: the log chips are ground into wood fibers by a wood grinder: the length of the log chips is 5cm, and the width is 2cm , the thickness is 0.5cm; the wood fiber length is 0.8cm, and the width is 0.7mm; wood fiber disintegration: the wood fiber is transported to the pulper through the chain plate machine, dispersed and disintegrated by adding water, and prepared into 6% mass percent concentration Uniformly dispersed wood fiber slurry, the wood fiber in the wood fiber slurry is 0.8cm long and 0.2mm wide; purification treatment: use a fine sieve to separate and purify impurities with a particle size of ≧0.25mm in the wood fiber slurry Wood fiber pulp. The sieve aperture of fine sieve is 0.25mm, and the pressure of fine sieve is 250KPa; desanding treatment: use high-concentration desander to remov...

Embodiment 2

[0040] like figure 1As shown, the production process of a raw material for coating whiteboard paper in this embodiment includes the following process steps: Log milling: the log chips are ground into wood fibers by a wood grinder: the length of the log chips is 3cm, and the width is 1cm , the thickness is 0.2cm; the wood fiber length is 0.5cm, and the width is 0.4mm; wood fiber disintegration: the wood fiber is transported to the pulper through the chain plate machine, dispersed and disintegrated by adding water, and prepared into 4% mass percentage concentration Uniformly dispersed wood fiber slurry, the wood fiber in the wood fiber slurry is 0.5cm in length and 0.12mm in width; purification treatment: use a fine sieve to separate and purify impurities with a particle size of ≧0.18mm in the wood fiber slurry Wood fiber pulp. The sieve aperture of fine sieve is 0.18mm, and the pressure of fine sieve is 210KPa; desanding treatment: use high-concentration desander to remove imp...

Embodiment 3

[0043] like figure 1 As shown, the production process of a kind of raw material for coating whiteboard paper in the present embodiment comprises the following process steps: Log milling: the log chips are ground into wood fibers by a wood grinder: the length of the log chips is 2 cm, and the width is 0.5 cm. cm, thickness is 0.1cm; wood fiber length is 0.2cm, width is 0.2mm; wood fiber disintegration: wood fiber is transported to pulper through chain plate machine, add water to disperse, disintegrate, and prepare into 3% mass percent concentration Evenly dispersed wood fiber slurry, the wood fiber in the wood fiber slurry is 0.2cm in length and 0.05mm in width; purification treatment: use a fine sieve to separate impurities with a particle size ≥ 0.1mm in the wood fiber slurry, and purify Wood fiber pulp. The sieve aperture of fine sieve is 0.1mm, and the pressure of fine sieve is 180KPa; desanding treatment: use high-concentration desander to remove impurities with high dens...

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Abstract

The invention relates to the technical field of processing of papermaking raw materials, in particular to a production process of a raw material for a coated white board paper in the paper-making industry. The production process comprises the following process steps of: a first step of grinding raw wood into powder; a second step of beating wood fibers; a third step of carrying out purification treatment; a four step of carrying out desanding treatment; a fifth step of carrying out disc milling and pulping treatment; and a sixth step of preparing pulp and making paper. According to the invention, due to the utilization of the combination of a wood fiber beating process and a purification process, at least 10 percent of waste paper raw materials are replaced and the problems of rising of price of waste paper and reduction of the pressure and the thickness are solved, so that the using amount of the waste paper raw materials is reduced, the cost is reduced and more economic benefits are created.

Description

technical field [0001] The invention relates to the technical field of papermaking raw material processing, in particular to a production process of raw materials for coated white board paper in the papermaking industry. Background technique [0002] Coated white board paper is a high-grade packaging paper and an important part of packaging paper. Coated white board paper is favored by the packaging industry because of its excellent coating surface properties and the ability to print exquisite color printing effects. At present, coated white board paper has been widely used in daily necessities, agricultural products, large household appliances, etc. wrapping paper table paper. [0003] In the prior art, the raw materials of coated white board paper are mainly waste paper and wood pulp. Coated white board paper is divided into four layers: surface layer, lining layer, core layer and bottom layer. The functions of each layer of slurry are different, and the raw materials use...

Claims

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Application Information

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IPC IPC(8): D21F11/00D21B1/14D21B1/34D21D5/04D21D5/18
Inventor 张成飞林新阳张益安谢昌武刘灼星
Owner DONGGUAN NINE DRAGONS PAPER IND
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