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Paper containing preaggregated filler and process for producing the same

A manufacturing method and technology for base paper, applied in the directions of non-fiber pulp addition, inorganic compound addition, paper, etc., can solve the problems of insufficient paper strength and unsatisfactory quality, and achieve improved paper strength, good printing quality and smoothness. high degree of effect

Active Publication Date: 2009-02-18
HARIMA CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the ash content is increased, the paper strength is not sufficient, and the quality of the printing surface is not satisfactory.

Method used

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  • Paper containing preaggregated filler and process for producing the same
  • Paper containing preaggregated filler and process for producing the same
  • Paper containing preaggregated filler and process for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0160] Use a headbox to add the above-mentioned pre-aggregated filler 2 to the slurry of the raw material pulp, use the obtained paper stock for papermaking, and apply hydroxyethyl starch as a surface treatment agent to obtain a paper for offset printing with a filler rate of 15%. Neutral newsprint.

Embodiment 2

[0162] Use a headbox to add the above-mentioned pre-agglomerated filler 2 to the slurry of the raw material pulp, use the obtained paper stock for papermaking, and apply hydroxyethyl starch as a surface treatment agent to obtain a paper for offset printing with a filler rate of 30%. Neutral newsprint.

Embodiment 3

[0164] Use a headbox to add the above-mentioned pre-aggregated filler 1 to the slurry of the raw material pulp, use the obtained paper stock for papermaking, and apply hydroxyethyl starch as a surface treatment agent to obtain a paper for offset printing with a filler rate of 15%. Neutral newsprint.

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PUM

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Abstract

The invention provides a paper which contains a preaggregated filler having an average particle diameter as determined by laser diffractometry of 10-80 mu m and obtained by treating a filler with a combined acrylamide copolymer comprising (A) an anionic polysaccharide and (B) a cationic and / or ampholytic acrylamide copolymer, in such an amount that the paper has an ash content of 3-40 wt.% on a solid basis. This paper is satisfactory in paper strength including strength and stiffness, has high smoothness, and attains excellent print quality.

Description

technical field [0001] The present invention relates to paper to which preaggregated filler is added, including newsprint paper, transparent coated printing paper, electrophotographic transfer paper, coated printing paper, and the like, and a method for producing the same. Background technique [0002] Various uses and types of paper have been known so far, such as newsprint paper, clear coated printing paper, electrophotographic transfer paper, coated paper for printing, and the like. [0003] Newspapers, for which the ability to withstand fast, high-volume printing is the most important quality, place particularly stringent requirements on the tensile strength associated with web breaks. In particular, the paper strength tends to decrease due to weight reduction of newsprint paper in recent years and a large amount of waste paper pulp such as deinked pulp blended. [0004] In addition, since a large amount of printing is performed in a short period of time, problems such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H17/67D21H17/24D21H17/45D21H19/10G03G7/00
Inventor 小野克正久津轮幸二横原知宏野野村文就渡边诚幸绀屋本博茶谷明伸木村吉晴濑崎崇生
Owner HARIMA CHEM INC
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