Myopia prevention paper, as well as preparation method and application

A technology of short-sighted paper and white paper, which is applied in the field of pulp and papermaking engineering, can solve the problems of reduced strength, smoothness, and sizing of recycled paper, and achieve reduced visual fatigue, high sizing, and good writing performance Effect

Active Publication Date: 2019-03-01
广州市咏润纸业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, when waste paper is used to prepare office cultural paper, the deinked pulp of waste paper such as recycled office paper, offset books, and bookbinding paper is generally used as the main raw material, and a certain proportion of wood pulp, straw pulp, Raw plant pulp such as hemp pulp or bamboo pulp and / or adding a large number of additives to solve the problem of reduced strength, smoothness, and sizing of recycled paper

Method used

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  • Myopia prevention paper, as well as preparation method and application
  • Myopia prevention paper, as well as preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The preparation of embodiment 1 waste book paper deinking pulp

[0039] (1) Add hot water, NaOH with 1.4-1.6% of the weight of waste book paper, and NaOH with 3%-3.5% of the weight of waste paper paper in the pulper. 2 SiO 3 , waste book paper weight 0.2% ~ 0.25% H 2 o 2 Pulping with waste book paper, the slurry concentration is controlled at 4.5-5.5%, the temperature is controlled at 50-60°C, and the pulping time is 50 minutes to obtain waste book pulp;

[0040] (2) Screening, purifying, flotation and beating the waste book pulp in sequence to obtain deinked waste book paper pulp.

[0041] For the deinked pulp of waste book paper prepared in Example 1, the beating concentration is controlled at 2.8-3.2%, and the beating degree (knocking degree) is controlled at 38-42°SR.

Embodiment 2

[0042] The preparation of embodiment 2 anti-myopia paper

[0043] (1) After the white paper edge is beaten, the white paper edge pulp with a beating concentration controlled at 2.8 to 3.2% and a beating degree controlled at 38 to 42 ° SR is obtained, and the waste book paper deinked pulp obtained in Example 1 is obtained by The mass ratio is 4:1 mixed to obtain mixed pulp;

[0044] (2) Dilute the mixed pulp with water to a pulp concentration of 2.5%, add direct frozen yellow G to the pulp in an amount of 0.9-1.1kg / t paper and add alkali in an amount of 1.7-2.1kg / t paper Brilliant Yellow O, toning the slurry to obtain a light yellow slurry, which is made by paper machine to obtain anti-myopia paper.

[0045] The anti-myopia paper prepared in this embodiment is light yellow, with a hue of 40-60 degrees, a saturation of 20-60%, and a brightness of 65-85%. The main performance indicators of the anti-myopia paper of this embodiment include: quantitatively 55 ± 2g / m 2 , the longitu...

Embodiment 3

[0046] The preparation of embodiment 3 anti-myopia paper

[0047] (1) After the white paper edge is beaten, the white paper edge pulp with a beating concentration controlled at 2.8 to 3.2% and a beating degree controlled at 38 to 42 ° SR is obtained, and the waste book paper deinked pulp obtained in Example 1 is obtained by Mixing at a mass ratio of 3:1 to obtain a mixed pulp;

[0048] (2) Dilute the mixed pulp with water to a pulp concentration of 2.4%, add direct frozen yellow G to the pulp in an amount of 0.9-1.1kg / t paper and add alkali in an amount of 1.7-2.1kg / t paper Brilliant Yellow O, toning the slurry to obtain a light yellow slurry, which is made by paper machine to obtain anti-myopia paper.

[0049] The anti-myopia paper prepared in this embodiment is light yellow, with a hue of 40-60 degrees, a saturation of 20-60%, and a brightness of 65-85%. The main performance indicators of the anti-myopia paper of this embodiment include: quantitatively 60 ± 2g / m 2 , the l...

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Abstract

The invention discloses myopia prevention paper. The myopia prevention paper is prepared from pulp and pigment, wherein the pulp is prepared from the following raw materials in percentage by weight: 75 to 85 percent of waste book paper deinked pulp and 15 to 25 percent of white shavings pulp; the pigment is selected from one or more of chrysophenine G, auramine O and malachite green. The myopia prevention paper is faint yellow or faint green, and is soft in luster, so that the myopia prevention paper has low irritation to human eyes, can relieve visual fatigue, plays a certain role in protecting eyes, and plays a role in preventing myopia. Meanwhile, waste book paper and white shavings are taken as main raw materials of the myopia prevention paper, so that secondary fiber is utility fully,other additives except pigment do not need to be added, the production cost can be lowered remarkably, and the influence on the environment is lowered. Moreover, the myopia prevention paper has the advantages of high tensile index, tearing strength index, smoothness and sizing value, low surface absorption amount, and high mechanical performance, surface performance and water resistance, and is smooth for a user to write.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking engineering, and in particular relates to an anti-myopia paper and a preparation method thereof. Background technique [0002] The ordinary paper that people use every day is mostly white, and white is a full-frequency spectrum with a high reflection coefficient, which has a relatively obvious contrast with black fonts, and is more irritating to human eyes. People who use and watch white paper for a long time will easily cause eye fatigue. After a long time, they will easily form functional accommodation myopia (pseudo-myopia), which will cause damage to the eyes. On the market at present, especially on the student book and the teaching material market, there is a need for a kind of book that has a certain protective effect on the eyes of students and can prevent myopia, book paper. [0003] The anti-myopia paper can reflect a specific spectrum color light, which matches with othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/02D21H15/10D21H11/14D21H17/07D21H17/11
CPCD21C5/025D21C5/027D21H11/14D21H15/10D21H17/07D21H17/11Y02W30/64
Inventor 何凤飞
Owner 广州市咏润纸业科技有限公司
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