A kind of green environmental protection type anti-myopia workbook paper preparation process

A green and environmentally friendly preparation technology, applied in the direction of paper, special paper, non-woody plant/crop pulp, etc., can solve problems such as damage to students' vision and health, achieve easy disposal and recycling, reduce drying time, waste gas little effect

Active Publication Date: 2018-09-21
四川北彩印务有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] The invention provides a green and environment-friendly anti-myopia homework paper preparation process to simultaneously solve the problem that the homework produced by the prior art damages students' eyesight and health

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0026] A kind of green environment-friendly anti-myopia homework paper preparation process, comprises the following steps:

[0027] (1) Grind the wheat straw so that the fiber length is 19 cm; add sodium sulfite, sodium hydroxide and anthraquinone to the wheat straw fiber, and mix thoroughly, the addition amount accounts for the weight percentage of wheat straw: sodium sulfite 5%, sodium hydroxide 3 %, anthraquinone 0.02%;

[0028] (2) Cook the mixture in water to form a pulp slurry, the concentration of the slurry is 4-5%, the cooking temperature is 180°C, and the cooking time is 2 hours, and the cooked slurry is sieved to remove coarse impurities;

[0029] (3) Add sodium hydroxide to the cooked slurry, heat it to 50°C, and keep it for 6 hours. The amount of sodium hydroxide added is 4% by weight of the slurry;

[0030] (4) According to the paper thickness requirements, spread the pulp on the 80-mesh forming wire to form a wet paper web, and heat it at 55°C until the water c...

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Abstract

The invention discloses a preparation process and application of green environment-friendly paper, belonging to the field of environment-friendly papermaking technology. According to the invention, a Chinese ink coloring apparatus is employed for uniformly coating the surface of a semi-dried paper web with a color coating in a full-web Chinese ink coloring manner; since the paper web has moisture, the paper web well absorbs Chinese ink during coloring, and a uniform color coating can be formed; thus, green environment-friendly myopia-preventing homework books, exercise books and examination paper of students prepared from produced paper through printing protect the eyesight of students from damage in use of the books and examination paper. A paper machine is employed for drying, compacting and synchronous dye fixation, so the coating on the surface of the paper is fully fused with the paper and is free of peeling. The whole process flow is integrated with a papermaking procedure, the semi-dried paper web is directly subjected to full-web Chinese ink coloring and then to further drying, and the papermaking procedure is integrated with the drying part of a coloring procedure, so drying time is reduced, energy needed in drying is saved, and high efficiency and energy conservation are realized. Produced wastewater is simple in composition and easy to treat.

Description

technical field [0001] The invention relates to an environment-friendly papermaking technology, in particular to a preparation process of a green and environment-friendly anti-myopia homework paper. Through this process, the color of paper is changed to reduce the intensity of reflected light, increase the hue of reflected light, and improve the visual environment to prevent myopia. Background technique [0002] Homework, schoolwork books, and student test papers are important tools for students to study, but as far as homework is concerned, each primary and secondary school student in our country uses at least 20 homework books per semester. There is a huge demand, and homework books, school work books, and student test papers are all made of paper. [0003] In the existing factory, the materials for making exercise books, schoolbooks, and student test papers are all directly made of ready-made pure white paper. In the papermaking process, in order to improve the gloss of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21H21/28D21H25/06D21H11/12D21C5/00D21C3/04D21C3/02D21H17/64B42D12/00
CPCB42D12/00D21C3/022D21C3/06D21C5/00D21H11/12D21H17/64D21H21/28D21H25/06D21H27/00
Inventor 陈应开
Owner 四川北彩印务有限公司
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