Unlock instant, AI-driven research and patent intelligence for your innovation.

Coating broke paper, processing method thereof and paper

A processing method and coating technology, applied in paper, fiber raw material processing, papermaking, etc., can solve the problems of low pulp fiber strength, high ash content of coated broke, difficult to retain, etc., to improve the retention rate, increase the bonding point, The effect of improving the strength of pulp fibers

Inactive Publication Date: 2019-07-09
GOLD EAST PAPER JIANGSU
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the inventors of the present application have found in the long-term research and development process that coated broken paper has three characteristics: low pulp fiber strength, high ash content in coated broken paper, difficulty in retention and high content of anionic trash, so it is easy to use in the papermaking process. Negative impact on the paper machine system and the performance of the stock itself

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coating broke paper, processing method thereof and paper
  • Coating broke paper, processing method thereof and paper
  • Coating broke paper, processing method thereof and paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Coated broken paper was obtained by the same method as in the standard example, and the concentration was 3.5%. Under stirring conditions, add cationic PEI to the coated broken paper, wherein the charge density of the PEI is 13meq / g, the molecular weight is 1 million, and the dry mass ratio of the coated broken paper is 0.1kg / ton, After stirring evenly, add the fully gelatinized cationic starch for wet end of papermaking, wherein the absolute dry mass ratio of the fully gelatinized cationic starch to the coated broken paper is 30kg / ton, and continue stirring evenly to obtain the processed Coated broken paper.

Embodiment 2

[0049] Coated broken paper was obtained by the same method as in the standard example, and the concentration was 3.5%. Under stirring conditions, add cationic PEI to the coated broken paper, wherein the charge density of the PEI is 8meq / g, the molecular weight is 700,000, and the dry mass ratio of the coated broken paper is 1.0kg / ton, After stirring evenly, add the fully gelatinized cationic starch for wet end of papermaking, wherein the absolute dry mass ratio of the fully gelatinized cationic starch to the coated broken paper is 5kg / ton, and continue to stir evenly to obtain the processed Coated broken paper.

Embodiment 3

[0051] Coated broken paper was obtained by the same method as in the standard example, and the concentration was 3.5%. Under stirring conditions, add cationic PVAm to the coated broken paper, wherein the charge density of the PVAm is 10meq / g, the molecular weight is 800,000, and the absolute dry mass ratio of the coated broken paper is 0.5kg / ton, After stirring evenly, add the fully gelatinized cationic starch for wet end of papermaking, wherein the absolute dry mass ratio of the fully gelatinized cationic starch to the coated broken paper is 15kg / ton, and continue to stir evenly to obtain the processed Coated broken paper.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses coating broke paper, a processing method thereof and paper. The method comprises the following steps: providing a cationic reagent, treated cationic starch and coating broke paper; adding the cationic reagent into the coating broke paper to obtain a mixed liquid; and adding treated cationic starch into the mixed liquid to obtain the treated coating broke paper. In the way,the negative influence of the coating broke paper in a papermaking system can be reduced, and the performance of the coating broke paper is improved.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a coated broke paper, a processing method thereof, and paper. Background technique [0002] The finished paper after base paper has been coated with pigments may not be sold because it cannot meet the quality requirements of coated paper or has obvious paper defects. These unmarketable coated papers can be returned to the papermaking process after being treated by dispersing, sieving, slag removal, and concentration, and mixed with fresh pulp and chemicals, and then copied into base paper again. This kind of slurry processed by coated paper through processes such as deflaking, sieving, slag removal, and concentration is called coated broken paper. [0003] If the coated broken paper can be returned to the papermaking process, on the one hand, it will reduce the production cost of paper and reduce waste; on the other hand, it will reduce the amount of fresh pulp and save reso...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21H17/29D21H17/56
CPCD21H11/14D21H17/29D21H17/56
Inventor 王威吴国泉杨露朱叶峰壮欢严浩刘翔飞陶卫峰
Owner GOLD EAST PAPER JIANGSU