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Production method of high-bulk myopia-prevention paper

A production method and bulk technology, applied in the field of production of high-bulk anti-myopia paper, can solve the problems of thin hand feeling, unavailable to users, and ineffective improvement of paper opacity, so as to achieve the effect of high opacity and myopia prevention

Inactive Publication Date: 2017-12-08
MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, anti-myopia paper has also been produced by improving the color of the paper, but the disadvantage is that the bulk of the paper is generally lower than 1.2um, which cannot effectively improve the opacity of the paper, and the printed paper is printed through, and the hand feels thin, which cannot be recognized by users.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for producing high-bulk anti-myopia paper, comprising the following steps:

[0025] S1. Slurry treatment: Bleached coniferous wood pulp, bleached chemical reed pulp, and poplar chemical-mechanical pulp are processed separately by double disc mills, so that the degree of beating of softwood pulp is 36°SR, and the degree of beating of chemical reed pulp is 34°SR , making poplar chemical-mechanical pulp percussion degree 30°SR; wherein the bulk thickness of poplar chemical-mechanical pulp slurry is 3.6cm3 / g;

[0026] S2. Dyeing: Send the processed pulp into the pulp mixing tank, and the addition amount of each pulp is calculated as 25% of bleached coniferous wood pulp, 35% of poplar chemical mechanical pulp, and 40% of bleached chemical reed pulp according to weight percentage; first add poplar chemical pulp Then add dyeing agent direct yellow to mechanical pulp, the dosage of dye direct yellow is 0.15 kg / ton of paper, then add chemical reed pulp, and finally add ...

Embodiment 2

[0032] A method for producing high-bulk anti-myopia paper, comprising the following steps:

[0033] S1. Slurry treatment: Bleached coniferous wood pulp, bleached chemical reed pulp, and poplar chemical-mechanical pulp are processed separately by double disc mills, so that the degree of beating of softwood pulp is 36°SR, and the degree of beating of chemical reed pulp is 34°SR , making poplar chemical-mechanical pulp percussion degree 30 ° SR; wherein the bulk thickness of poplar chemical-mechanical pulp slurry is 3.7cm3 / g;

[0034] S2. Dyeing: Send the processed pulp into the pulp mixing tank, and the addition amount of each pulp is calculated as 25% of bleached coniferous wood pulp, 35% of poplar chemical mechanical pulp, and 40% of bleached chemical reed pulp according to weight percentage; first add poplar chemical pulp Then add dyeing agent direct yellow to mechanical pulp, the dosage of dye direct yellow is 0.15 kg / ton of paper, then add chemical reed pulp, and finally ad...

Embodiment 3

[0040] A method for producing high-bulk anti-myopia paper, comprising the following steps:

[0041] S1. Slurry treatment: Bleached coniferous wood pulp, bleached chemical reed pulp, and poplar chemical-mechanical pulp are processed separately by double disc mills, so that the degree of beating of softwood pulp is 36°SR, and the degree of beating of chemical reed pulp is 34°SR , making poplar chemical-mechanical pulp percussion degree 30°SR; wherein the bulk thickness of poplar chemical-mechanical pulp slurry is 3.6cm3 / g;

[0042] S2. Dyeing: Send the processed pulp into the pulp mixing tank, and the addition amount of each pulp is calculated as 25% of bleached coniferous wood pulp, 35% of poplar chemical mechanical pulp, and 40% of bleached chemical reed pulp according to weight percentage; first add poplar chemical pulp Then add dyeing agent direct yellow to mechanical pulp, the dosage of dye direct yellow is 0.15 kg / ton of paper, then add chemical reed pulp, and finally add ...

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PUM

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Abstract

The invention relates to the technical field of paper production, in particular to a production method of high-bulk myopia-prevention paper. The method comprises the following steps of S1, pulp treatment: respectively treating bleaching needlebush pulp, bleaching chemical reed pulp and poplar chemithermomechanical pulp through a double-disc mill so that the process requirements are met, wherein the bulk of the poplar chemithermomechanical pulp is greater than 3.5cm<3> / g; S2, dyeing: feeding the treated pulp into a pulp mixing pool; firstly, adding the poplar chemithermomechanical pulp; then, adding dyeing agents for direct yellowing; then, adding chemical reed pulp; finally adding needlebush pulp; uniformly mixing all pulp through stirring; S3, paper making by a paper making machine; S4 paper forming through dewatering and drying. The production method of the high-bulk myopia-prevention exercise book paper provided by the invention has the advantages that the paper obtained through production has high bulk; the color of the paper is maize-yellow, the nontransparency is high; the two-side printing and writing can be performed; the paper is used as the paper for exercise books for primary and secondary school students; the obvious myopia-prevention effect can be achieved.

Description

technical field [0001] The invention relates to the technical field of paper production, in particular to a production method of high-bulk anti-myopia paper. Background technique [0002] Traditional textbooks and exercise books used by primary and middle school students are all printed on pure white paper. Although textbooks, books, student workbooks and other stationery and periodicals printed on white paper are popular with people for their bright color, high whiteness and beautiful appearance, they are not Because most of its text tables are black, and the black and white contrast is strong, long-term use causes visual fatigue, which is very harmful to human eye health and is the main cause of myopia. [0003] For a country with a large population base like my country, the number of primary and secondary school students ranks first in the world. In addition, my country's education method is an exam-oriented education method. Primary and secondary school students are unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H17/67D21H21/16D21H21/28
CPCD21H27/00D21H17/675D21H21/16D21H21/28
Inventor 郭旭斌张金霞马玉春蒲洋杜文斌
Owner MCC MEILI CLOUD COMPUTING IND INVESTMENT CO LTD
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