Method for making high-bulk paper by adopting chemical wood pulp

A technology of chemical wood pulp and bulk, which is applied in the field of papermaking to achieve the effects of good strength, high bulk and high whiteness

Inactive Publication Date: 2014-12-24
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few literatures that use pure chemical wood pulp as raw material to make high-bulk paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1) First, after disintegrating the chemical softwood pulp and the chemical hardwood pulp, add water to dilute them respectively so that the mass concentration of the pulp is 10%, and then beat them separately so that the beating degree of the chemical softwood pulp is 33 ° SR, and the chemical hardwood pulp The degree of beating is 27 ° SR, after beating, add water to dilute respectively so that the mass concentration of chemical softwood pulp is 0.3%, and the mass concentration of chemical hardwood pulp is 0.5%;

[0018] 2) Mix chemical softwood pulp and chemical hardwood pulp in a weight ratio of 25:75, and add 20% silicate-based high-bulk large-particle fillers of chemical softwood pulp and chemical hardwood pulp dry weight therein and Thoroughly mix the mixed slurry;

[0019] The filler should be made into a slurry with a mass concentration of 20% first, and then after slag removal and dispersion, diluted with water to be used as a slurry with a mass concentration o...

Embodiment 2

[0024] 1) First, after disintegrating the chemical softwood pulp and the chemical hardwood pulp, add water to dilute them respectively so that the mass concentration of the pulp is 9.5%, and then beat them separately so that the beating degree of the chemical softwood pulp is 30 ° SR, and the chemical hardwood pulp The degree of beating is 22 ° SR, after beating, add water to dilute respectively so that the mass concentration of chemical softwood pulp is 0.1%, and the mass concentration of chemical hardwood pulp is 0.3%;

[0025] 2) Mix chemical softwood pulp and chemical hardwood pulp in a weight ratio of 15:85, and add 30% silicate-based high-bulk large-particle fillers of chemical softwood pulp and chemical hardwood pulp dry weight therein and Thoroughly mix the mixed slurry;

[0026] The filler should be made into a slurry with a mass concentration of 28% first, then after slag removal and dispersion, diluted with water to be used as a slurry with a mass concentration of 1...

Embodiment 3

[0031] 1) First, after disintegrating the chemical softwood pulp and the chemical hardwood pulp, add water to dilute them to make the slurry mass concentration 11%, and then beat them separately so that the beating degree of the chemical softwood pulp is 35 ° SR, and the chemical hardwood pulp The degree of beating is 25 ° SR, after beating, add water to dilute respectively so that the mass concentration of chemical softwood pulp is 0.2%, and the mass concentration of chemical hardwood pulp is 0.4%;

[0032] 2) Mix chemical softwood pulp and chemical hardwood pulp in a weight ratio of 20:80, and add silicate-based high-bulk large-particle fillers with a dry weight of 40% of chemical softwood pulp and chemical hardwood pulp and Thoroughly mix the mixed slurry;

[0033] The filler should be made into a slurry with a mass concentration of 23% first, then after slag removal, dispersed, diluted with water to be used as a slurry with a mass concentration of 13%;

[0034] 3) gelatin...

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Abstract

The invention relates to high-bulk paper manufactured by adopting chemical wood pulp and a manufacture method of the high-bulk paper. The high-bulk paper is mainly characterized in that the mass mixture ratio of the pulp of chemical needle-point leaf wood pulp to chemical broad leaf wood pulp is (15-30):(70-85), filling materials are silicate base high-bulk great-particle filling materials with the addition being 20 percent to 40 percent, the consumption of retention aid is 0.3 to 0.5kg / ton paper, and the consumption of cationic starch is 8 to 15kg / ton paper. Handsheets made by adopting the method have the characteristics that the bulk is high, the filling content is high, and the paper intensity retention is good.

Description

technical field [0001] The invention belongs to the field of papermaking, and in particular relates to a method for manufacturing high-bulk paper by using chemical wood pulp. Background technique [0002] In recent years, paper producers have paid more and more attention to the index of paper bulk. Because high bulk paper can replace the original high basis weight paper with the same thickness, it not only saves fiber raw materials, but also reduces production costs and transportation costs, thereby bringing better economic benefits to enterprises. In the market, high-bulk paper is also called light paper, and the bulk is generally 1.6g / m 3 ~1.9g / m 3 Among them, broadleaf wood chemical mechanical pulp and coniferous wood chemical mechanical pulp or a small amount of chemical pulp are generally used. High bulk paper has been recognized by the market as an upgraded product of medium and high-grade book paper due to its high bulk. Therefore, high-bulk lightweight paper has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/02D21H17/68
Inventor 张美云宋顺喜孙俊民张战军吴养育
Owner SHAANXI UNIV OF SCI & TECH
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