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A preparation method of filler composition, filler composition and paper

A composition and mixture technology, applied in the field of papermaking, can solve the problems of reduced tear strength of paper, unable to meet the bulk thickness, reduced paper thickness, etc., and achieve the effects of reducing the bonding area, improving the retention rate, and improving the strength

Active Publication Date: 2018-04-03
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the use of a large amount of starch makes the paper brittle and the tear strength of the paper decreases; in addition, the addition of a large amount of fillers reduces the thickness of the paper, which cannot meet the requirements of the paper with high bulk thickness.

Method used

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  • A preparation method of filler composition, filler composition and paper
  • A preparation method of filler composition, filler composition and paper
  • A preparation method of filler composition, filler composition and paper

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preparation example Construction

[0039] refer to figure 1 , the embodiment of the present invention provides a kind of preparation method of filler composition, comprises the following steps:

[0040] Step S101: mixing fillers with cationic starch granules;

[0041] Fillers are some basic water-insoluble solid particles added to the pulp during the papermaking process, which can improve the opacity, brightness, smoothness, printing adaptability (such as improving absorption, ink absorption), softness, and uniformity of the paper. and dimensional stability; cationic starch is the introduction of tertiary amino groups or quaternary ammonium groups into starch macromolecules to endow starch with cationic properties.

[0042] Step S102: Swelling the mixture of the filler and the cationic starch granules, so that the cationic starch granules swell into cationic starch spheres, and the filler adheres to the surface of the cationic starch spheres to form a filler premix;

[0043] The mixture of fillers and cationi...

Embodiment 1

[0088] Get 500g mass percent concentration and be 20% GCC, under agitation, add cationic starch granules relative to GCC absolute dry weight 1%, the degree of substitution of cationic starch granules is 0.015; GCC and cationic starch granule mixed solution temperature is raised to 50 degrees Celsius, and stirred for 0.5 hours to form a filler premix; under stirring, to the above filler premix, add 0.05% cationic guar gum relative to the absolute dry weight of GCC, and stir for 5 minutes, wherein the cationic The guar gum has a degree of substitution of 0.05 and a molecular weight of 500,000 to form a filler composition.

Embodiment 2

[0090] Get 500g mass percent concentration and be 20% GCC, under agitation, add cationic starch granules relative to GCC absolute dry weight 2%, the degree of substitution of cationic starch granules is 0.015; GCC and cationic starch granule mixed solution temperature is raised to 50 degrees Celsius, and stirred for 0.5 hours to form a filler premix; in the stirring state, add 0.1% cationic guar gum relative to the absolute dry weight of GCC to the above filler premix, and stir for 5 minutes, wherein, the cationic The guar gum has a degree of substitution of 0.1 and a molecular weight of 1,000,000 to form a filler composition.

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Abstract

The invention discloses a preparation method of a filler composition, the filler composition, and paper. The method comprises the following steps: a filler is mixed with cationic starch particles; the mixture of the filler and the cationic starch particles is subjected to a swelling treatment, such that the cationic starch particles swell into cationic starch balls; the filler is adhered to the surfaces of the cationic starch balls, such that a filler premix is formed; the filler premix is mixed with a cationic polymer, such that the cationic polymer is coated on the filler premix, and the filler composition is obtained. With the above manner, paper strength and thickness can be improved. When starch dose is relatively high, the tear strength of paper can be ensured.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a preparation method of a filler composition, the filler composition and paper. Background technique [0002] In the paper industry, in order to improve the opacity, brightness, smoothness, printing adaptability (such as improving absorption, ink absorption), softness, uniformity and dimensional stability of paper, some basic Water-insoluble solid particles, that is, fillers; however, when fillers are directly added to pulp, the retention rate is usually relatively low, and the addition of fillers will affect the strength of paper. [0003] In the prior art, starch is usually used to modify fillers to improve the retention rate of fillers and the strength of paper. In the prior art, starch gelatinization is usually required in the process of modifying fillers, and the fillers are wrapped by starch paste. Improve paper strength; at the same time, in the actual production proc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H17/69
Inventor 王翠霞张菊仙胡华雷夏银凤
Owner GOLD EAST PAPER JIANGSU
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