Method for preparing natural color bamboo pulp fiber household paper

Abstract

The invention relates to a method for preparing natural color bamboo pulp fiber household paper. The method includes the steps that firstly, digesting is conducted, natural clustered bamboo chips are placed in a specially-made digesting container, NaOH and Na2S are added to the container, and then steaming is conducted on the bamboo chips; secondly, large bulks of undigested bamboo chips, undigested bamboo joints, undigested crude fibers, gravels in raw materials and the like are removed through a screening and purifying device, black liquor in crude pulp is extracted through a pulp washing device, and then bamboo pulp fibers are primarily obtained; thirdly, the oxygen delignification working process is conducted on the obtained bamboo pulp fibers to further remove residual lignin in the bamboo pulp fibers, the bamboo pulp fibers are completely washed through the pulp washing device, and eventually natural color bamboo fibers are obtained; fourthly, the natural color bamboo fibers are pulped, pulp is placed in a pulp mixing pool, and coniferous long fibers are mixed into the pulp mixing pool; fifthly, additives are added to the pulp generated in the fourth step according to different products; sixthly, the pulp is fully stirred; seventhly, the mixed natural color bamboo pulp is online diluted and then processed through a purification system to further remove impurities; eventually, pulp is placed on a screen, paper is manufactured with the pulp, a layer of wet paper sheet is formed and processed, and then natural color bamboo pulp fiber household paper body paper is obtained. The method has the advantages that the prepared paper is greener, more environmentally friendly and healthier.

Description

technical field [0001] The invention belongs to the technical field of pulping and papermaking, and relates to a preparation method of natural-color bamboo pulp fiber household paper. Background technique [0002] Household paper is mainly used for people's daily hygiene. It is one of the indispensable paper types in life. Its shape is a single square, called square tissue or facial tissue; it is also rolled into a drum shape, called roll paper. Household tissue is a variety of sanitary wipes used for personal home and outings, including roll toilet paper, removable toilet paper, boxed tissue, pocket tissue, paper handkerchiefs, napkins, toilet paper, kitchen paper towels, etc. It is usually made of cotton pulp, wood pulp, straw pulp, waste paper pulp and other materials. Paper for different purposes has different raw material requirements. Good-quality toilet paper is made of virgin wood pulp. It is similar to the manufacturing process of ordinary paper, but it is require...

AI Technical Summary

Problems solved by technology

[0004] Now the household paper on the market is almost all white paper, in fact, they are all made of pulp bleached by bleaching agent. , more commonly used are chlorine, hypochlorite, chlorine dioxide, etc.; dioxins, furans, etc. contained in organic chlorides produced during production are carcinogenic, mutagenic, teratogenic, and multiple neuropathy and acute toxicity, the discharged sewage has a relatively large adverse effect on the water environment received

After the pulp is bleached by a strong oxidant, the strength of the fiber will be damaged to varying degrees, and the strength and toughness will decrease.

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