Pulping process of high-cleanliness primary-color bamboo pulp

Abstract

The invention relates to the technical field of household paper, in particular to a pulping process of high-cleanliness primary-color bamboo pulp, the process comprises the following steps: fully soaking and moistening bamboo pulp, carrying out high-concentration pulping by using a high-concentration pulping machine, carrying out low-concentration grinding by using a low-concentration grinding machine, carrying out coarse screening, two-section pressure screen fine screening and grading screening treatment to obtain long-fiber pulp and short-fiber pulp, and finally, mixing 50-90% of the long-fiber pulp and 10-50% of the short-fiber pulp to prepare pulp, adding a certain amount of a softening agent and a wet strength agent, and uniformly mixing to obtain the high-cleanliness primary- colorbamboo pulp. According to the process, redundant fibrous impurities can be removed so as to ensure the paper surface cleanliness, the pulping uniformity is good, and the strength, the softness and thehand feeling of domestic paper are improved.

Description

technical field [0001] The invention relates to the technical field of household paper, in particular to a pulping process of high-cleanness primary-color bamboo pulp. Background technique [0002] Bamboo pulp fiber is easy to cut horizontally due to its hard fiber and thick wall, and its high content of hemicellulose, so it is easy to hydrate during beating treatment, and the beating degree is easy to increase. Therefore, it is difficult to use bamboo pulp to make high-grade household paper. Better softness and feel. In addition, the high-end household paper uses primary-color bamboo pulp, which means that compared with bleached bamboo pulp, due to the lack of strong bleaching process, it is impossible to complete the bleaching of dark fibrous impurities in the fibers, and dark fibrous impurities will appear in the finished paper. On the other hand, during the refining process, most of the pulp is refined by high-consistency refiners. If only low-consistency beating is use...

AI Technical Summary

Problems solved by technology

[0002] Bamboo pulp fiber is easy to cut horizontally due to its hard fiber and thick wall, and its high content of hemicellulose, so it is easy to hydrate during beating treatment, and the beating degree is easy to increase. Therefore, it is difficult to use bamboo pulp to make high-grade household paper. Good softness and feel

In addition, the high-end household paper uses primary-color bamboo pulp, which means that compared with bleached bamboo pulp, due to the lack of strong bleaching process, it is impossible to complete the bleaching of dark fibrous impurities in the fibers, and dark fibrous impurities will appear in the finished paper. On the other hand, during the refining process, most of the pulp is refined by high-consistency refiners. If only low-consistency beating is used, the strength of the pulp itself will drop too much due to the strong cutting of fibers. , and because of the high degree of beating, the power consumption is also large, and the pulp fibers cannot be dispersed into agglomerated fibers. In addition, when the screw conveying equipment is used to feed pulp to the high-consistency refiner, the pressure is often unstable, and it is difficult to ensure the uniformity of the high-consistency refiner. Refining