Treatment method of paper mulberry bark for papermaking

Abstract

The invention belongs to the technical field of papermaking, and particularly relates to a treatment method of paper mulberry bark for papermaking. The treatment method of the paper mulberry bark for the papermaking includes the following steps of bark airing, first-time bark soaking, first-time bark steaming, second-time bark soaking, bark washing, bark kneading, bark and plant ash mortar stirring, and mortar mashing; according to the treatment method of the paper mulberry bark for papermaking, through a mode in which second-time bark soaking in water, second-time bark soaking in lime, second-time bark steaming, bark and plant ash mortar stirring, mechanical rolling and manual rolling are combined, the paper mulberry bark can be fermented to the maximum degree, and therefore paper mulberry base fibers can be softened more sufficiently; in the treatment process, no chemical agent is added, the integrity of the fibers is maintained to the maximum degree, so that prepared paper mulberry base fibers are relatively high in whiteness and yield, and fundamental guarantee is provided for the requirements of current markets for high-quality paper.

Description

technical field [0001] The invention belongs to the technical field of papermaking, and in particular relates to a processing method for papermaking bark. Background technique [0002] In recent years, China's paper industry has developed rapidly. In 2007, China's paper and cardboard output reached 73.5 million tons, and its consumption reached 72.9 million tons, ranking second in the world. China is still the world's largest net importer of paper and papermaking raw materials. , especially the import of fiber raw materials such as wood pulp and waste paper is huge, and the domestic wood supply is difficult to meet the demand. If all the raw materials are imported from abroad, it is neither realistic nor difficult to guarantee the domestic demand for wood. In 2004, the National Development and Reform Commission promulgated "The Tenth Five-Year Plan for the Construction of National Forest-Paper Integration Project and the Special Plan for 2010" urgently needs to speed up the ...

AI Technical Summary

Problems solved by technology

[0003] Because the black bark on the surface of the bark is difficult to remove, the traditional pulping method uses high temperature, high alkali, and long-term slow cooking process. Repeated stirring and washing will inevitably damage the fiber raw material, affect the strength of the fiber, and seriously reduce the pulping yield. With the advancement of science and technology, some results have been achieved in the processing of book purchases, such as application number CN 201610067347.7 The patent "A papermaking process method using bark as raw material" discloses a papermaking process method using bark as raw material. First, the bark is initially screened and soaked, and it is put into a paper steamer to boil. Carry out rolling, and add quicklime to soak for a period of time, then put the obtained bark into a paper retort and boil it at high temperature, then wash off the lime and impurities from the obtained bark, rub and peel it, and remove it with a steel knife The peeled raw material is cut into thin slices, put into a stone tank and crushed to obtain pulp, and finally the pounded pulp is poured into a paper tank filled with water, and after thorough stirring, the pulp forms a uniformly suspended floc in the water. Then papermaking and paper pressing are carried out, and the wet paper that still has moisture is swept, dried and peeled off. The paper produced does not add chemicals, will not cause harm to the health of users, and the paper is fine and flexible. , Feel smooth, wear-resistant, no wrinkle, long storage life, as the main raw material for papermaking, the quality of the tree directly affects the quality of the paper. With the continuous development of society, the requirements for paper are getting higher and higher , so the requirements for the treatment of the bast fibers of the mulberry tree are getting higher and higher. It is not only necessary to improve on the basis of reducing chemical agents, but also to improve the toughness, color, and softness of the fibers to a greater extent. Meet the current fiber requirements of the paper industry

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