Production method of myopia-preventing paper

A production method and anti-myopia technology, which is applied in the field of papermaking, can solve the problems of high production cost, large environmental pollution, and environmental damage, and achieve the effects of low cost, small environmental damage, and reduced environmental damage

Inactive Publication Date: 2015-05-13
汕头市中马印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the current anti-myopia paper is generally produced by plant fibers, and most of them are prepared by adding dyes to bleached white paper, the use of bleach and dyes will cause certain damage to the environment, and at the same time, logs are used to make them. Pape

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] (1) Waste paper or wheat straw is crushed into a pulper with an average particle size of 1.2 mm and a pulp concentration of 15%;

[0017] (2) Sieve the obtained shredded pulp through a pressure sieve with a pressure of 3.5MPa and a sieve aperture of 2.5mm;

[0018] (3) Using a fiber separator to separate the shredded pulp into fibers, the purity of the obtained fibers is 96.5%, and the removal rate of impurities is 93.8%;

[0019] (4) Blend and color the separated fiber, add basic bright yellow, aluminum sulfate, and rosin gum to the fiber slurry, and the amount added in the weight percentage of the slurry is: basic bright yellow 0.25%, aluminum sulfate 7% , 1.2% rosin gum, mixed and stirred for 60 minutes, and the mixing temperature was 45°C;

[0020] (5) Dehydration molding, drying and dehydration of the mixed slurry and molding, the drying temperature is 85°C, and the drying time is 7 minutes to obtain the anti-myopia paper.

[0021] The impurities separated in ste...

Embodiment 2

[0025] (1) Waste paper or wheat straw is crushed into a pulper with an average particle size of 1.5 mm and a pulp concentration of 15%;

[0026] (2) Sieve the obtained shredded pulp through a pressure sieve with a pressure of 3.5MPa and a sieve aperture of 3.2mm;

[0027] (3) Using a fiber separator to separate the shredded pulp into fibers, the purity of the obtained fibers is 96.3%, and the removal rate of impurities is 94.1%;

[0028] (4) Blend and color the separated fiber, add basic bright yellow, aluminum sulfate, and rosin gum to the fiber slurry, and the amount added in the weight percentage of the slurry is: basic bright yellow 0.25%, aluminum sulfate 7% , 1.3% rosin gum, mixed and stirred for 60 minutes, and the mixing temperature was 40°C;

[0029] (5) Dehydration molding, drying and dehydration of the mixed slurry and molding, the drying temperature is 90°C, and the drying time is 6 minutes to obtain the anti-myopia paper.

[0030] The impurities separated in ste...

Embodiment 3

[0034] (1) Waste paper or wheat straw is crushed into a pulper with an average particle size of 1.5 mm and a pulp concentration of 15%;

[0035] (2) Sieve the obtained shredded pulp through a pressure sieve with a pressure of 3.1MPa and a sieve aperture of 3.2mm;

[0036] (3) Use a fiber separator to separate the shredded pulp into fibers, the purity of the obtained fibers is 96.0%, and the removal rate of impurities is 94.5%;

[0037] (4) Blend and color the separated fibers, add basic bright yellow, aluminum sulfate, and rosin gum to the fiber slurry, and the added amount accounts for the weight percentage of the slurry: basic bright yellow 0.2%, aluminum sulfate 6% , 1.2% rosin gum, mixed and stirred for 40 minutes, and the mixing temperature was 40°C;

[0038] (5) Dehydration molding, drying and dehydration of the mixed slurry and molding, the drying temperature is 90°C, and the drying time is 6 minutes to obtain the anti-myopia paper.

[0039] The impurities separated i...

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PUM

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Abstract

The invention relates to a production method of myopia-preventing paper. The method comprises the following steps: crushing waste paper or wheat straws, and then screening through a pressure sieve; separating through a defibrating machine, and then pulping and coloring the purified fiber; and dewatering and molding to obtain the myopia-preventing paper. According to the production method of the myopia-preventing paper provided by the invention, the produced paper is natural faint yellow; myopia can be effectively prevented; and the production process is small in damages to environment and low in cost.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a production method of anti-myopia paper. Background technique [0002] The white paper that people use every day has white full-frequency reflection, which is irritating to the eyes, and the light yellow anti-myopia paper can reflect a specific spectrum of color light, which matches other color lights and has a suitable contrast, which can effectively improve the white full-frequency light. The impact on vision can achieve the effect of preventing myopia. Because yellow paper can absorb blue light and purple light that are harmful to the eyes, while white paper has white full-frequency light reflection, which is irritating to the eyes. Relatively speaking, yellow paper can relieve visual fatigue. [0003] Since the current anti-myopia paper is generally produced by plant fibers, and most of them are prepared by adding dyes to bleached white paper, the use of bleach and dyes...

Claims

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Application Information

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IPC IPC(8): D21H15/10D21H21/28D21H17/66D21H21/14
Inventor 董亚伦
Owner 汕头市中马印刷有限公司
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