Producing method for bright yellow anti-myopia health-care paper

Abstract

This invention refers to a kind of peak yellow health-care paper protecting from myopia, and its preparation. The process includes crushing wheat stalk, mixing sodium sulfite, sodium hydroxide and anthraquinone with wheat stalk fibers, steam-boiling the said mixture in water to form paper pulp materials, sifting out them to remove impurities, adding liquid chlorine, sodium hydroxide and sodium hypochlorite into them, heating to bleach pulp materials, pulverizing pulp materials; Adding alkali peak yellow, acid violet, aluminum sulphate, rosin glue, dithionite oil etc into pulp materials, diluting paper pulp with water in order to adjust colour, putting paper pulp on shaped net according to meet finished paper thickness, heating and drying to get products. This health-care paper is peak yellow, pretty and without lost fresh and hurt eyes. Its surface is smoothness, water tolerance and oil tolerance, and physical strength and surface strength reaching the write paper standard.

Description

technical field [0001] The invention relates to a method for manufacturing bright yellow anti-myopia health care paper, which belongs to the technical field of papermaking. Background technique [0002] Traditional writing or printing paper is generally white in appearance. In order to make white paper more beautiful, or suitable for some special purposes, it is generally necessary to add a large amount of fluorescent whitening agent and blue and purple dyes to the paper pulp to improve the brightness and aesthetics of the paper. The disadvantage of the existing paper is that under ordinary light, the reflected light generated from the paper strongly irritates the eyes of the user, easily makes the user feel visual fatigue, and leads to an increase in the incidence of myopia. Moreover, the whiteness of the raw pulp of traditional white paper is required to be 70-75%. Therefore, in the papermaking process, the amount of pulp bleaching agent is high, and the chemical reaction...

AI Technical Summary

Problems solved by technology

The disadvantage of the existing paper is that under ordinary light, the reflected light generated from the paper strongly stimulates the eyes of the user, easily makes the user feel visual fatigue, and leads to an increase in the incidence of myopia

Moreover, the whiteness of the raw pulp of traditional white paper is required to be 70-75%. Therefore, in the papermaking process, the amount of pulp bleaching agent is high, and the chemical reaction is violent, which increases the difficulty of process control.