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Manufacturing process of optical myopia-preventing paper

A technology of making crafts and myopia paper, which is applied in the field of papermaking, can solve problems such as environmental pollution, and achieve the effects of reducing costs, protecting the environment, and reducing light irritation

Pending Publication Date: 2021-05-28
JIANGSU KEYI CULTURE IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention uses waste thin book paper deinking pulp, coniferous wood pulp, and wheat straw pulp to prepare anti-myopia paper, and the waste is recycled. However, alkaline bright yellow, lemon yellow, and sunfast yellow are still used in combination, and the dyes will cause certain pollution to the environment.

Method used

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  • Manufacturing process of optical myopia-preventing paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A production process of optical anti-myopia paper, using a mixture of waste paper and straw as raw materials, the specific steps are as follows:

[0052] a. Cut the straw into flakes with a length of 1cm to 2cm, and remove impurities by a grass washer before dehydration;

[0053] b. Put the dehydrated flaky straw into the container, add swelling agent and cooking agent in the container: the swelling agent is sodium hydroxide accounting for 5% of the straw mass fraction and 0.2% of the straw mass fraction The combination of silicon compounds, the cooking agent is a combination of sodium sulfite accounting for 2% of the mass fraction of the straw and anthraquinone accounting for 0.02% of the mass fraction of the straw, adding water and mixing evenly;

[0054] c, heat the container in step b and cook the straw, the cooking temperature is 120°C, the cooking time is 1h, then keep the temperature at 150°C, soak for 0.5h, soften the flaky straw and remove impurities in the slu...

Embodiment 2

[0062] A production process of optical anti-myopia paper, using a mixture of waste paper and straw as raw materials, the specific steps are as follows:

[0063] a. Cut the straw into flakes with a length of 1cm to 2cm, and remove impurities by a grass washer before dehydration;

[0064] b. Put the dehydrated flaky straw into the container, add swelling agent and cooking agent in the container: the swelling agent is sodium hydroxide accounting for 15% of the straw mass fraction and 0.5% of the straw mass fraction The combination of silicon compounds, the cooking agent is a combination of sodium sulfite accounting for 6% of the mass fraction of the straw and anthraquinone accounting for 0.05% of the mass fraction of the straw, adding water and mixing evenly;

[0065] c. Heat the container in step b and cook the straw. The cooking temperature is 180° C. and the cooking time is 2 hours. Then keep the temperature at 180° C. and soak for 1.5 hours to soften the flaky straw and remov...

Embodiment 3

[0073] A production process of optical anti-myopia paper, using a mixture of waste paper and straw as raw materials, the specific steps are as follows:

[0074] a. Cut the straw into flakes with a length of 1cm to 2cm, and remove impurities by a grass washer before dehydration;

[0075] b. Put the dehydrated flaky straw into the container, add swelling agent and cooking agent in the container: the swelling agent is sodium hydroxide accounting for 10% of the straw mass fraction and 0.3% of the straw mass fraction The combination of silicon compounds, the cooking agent is a combination of sodium sulfite accounting for 4% of the mass fraction of the straw and anthraquinone accounting for 0.03% of the mass fraction of the straw, adding water and mixing evenly;

[0076] c. heat the container in step b and cook the straw, the cooking temperature is 150°C, the cooking time is 1.5h, then keep the temperature at 160°C, soak for 1h, soften the flaky straw and remove impurities in the sl...

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Abstract

The invention discloses a manufacturing process of optical myopia-preventing paper, which adopts a mixture of waste paper and straws as a raw material, and comprises the following steps: a, cutting the straws into sheets, removing impurities and dehydrating; b, putting the straws into a solvent and mixing; c, cooking and removing impurities to obtain straw unbleached pulp; d, crushing waste paper and adding hot water to prepare paper pulp; e, performing deinking treatment on the paper pulp in the step d to obtain waste paper pulp; f, uniformly mixing the straw unbleached pulp, the waste paper pulp and the porous filler to form mixed pulp; g, hot-grinding the mixed slurry for dissociation, and reserving the ground slurry for use; h, adding a light absorption filler into the ground pulp, performing hot grinding dissociation again, and taking the ground pulp as pulp for papermaking; and i, applying the pulp for papermaking to a papermaking machine to prepare the optical myopia-preventing paper. The paper produced by the production process disclosed by the invention can protect eyesight, can also be used as paper for secrecy, or can be hidden in the middle of common paper as a middle light absorption layer, is environment-friendly and resource-saving, and has obvious social, economic and environmental benefits.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a manufacturing process of optical anti-myopia paper. Background technique [0002] The paper used in most of the books at present is white, which is characterized by strong brightness. Human eyes perceive fonts through the chromaticity and brightness contrast between paper and characters. The whiter the paper, the stronger the reflected light, which causes the greatest visual fatigue while causing the largest brightness contrast. The stronger the light, the greater the degree of visual fatigue caused. Regardless of the length of the viewing distance, the ciliary muscle is in a state of excessive contraction, causing the viewpoint to move forward. This visual environment becomes an incentive for the visual distance to approach, which can easily lead to myopia in the long run . [0003] "Anti-myopia paper" can emit colored light of a specific frequency, creating a safe and c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/02D21H11/12D21H11/14D21C7/00D21B1/34D21B1/32D21D1/20D21F11/00D21F3/08D21F5/02D21H21/14
CPCD21B1/325D21B1/345D21C7/00D21D1/20D21F3/086D21F5/021D21F11/006D21H11/12D21H11/14D21H21/14D21H27/02Y02W30/64
Inventor 张永权吴养育毛文凤
Owner JIANGSU KEYI CULTURE IND GRP CO LTD
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