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Production process of novel textbook paper

A production process and teaching material technology, applied in paper, papermaking, paper machines, etc., can solve the problems of low whiteness, serious pollution, and many residual ink spots on the paper surface, so as to improve whiteness, reduce production costs, and save wood fiber raw materials Effect

Inactive Publication Date: 2009-06-17
HUATAI GROUP +1
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AI Technical Summary

Problems solved by technology

[0002] In the existing papermaking technology, the finished paper produced by using waste paper weak alkaline deinking pulp has low paper surface whiteness, many residual ink spots, and a lot of waste water, causing serious pollution

Method used

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  • Production process of novel textbook paper

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Embodiment Construction

[0007] The main process of this embodiment includes the pulp mixing process, the forebay, desanding and degassing, pressure screening and paper machine papermaking process. The raw material composition and weight ratio of the pulp mixing process are: 8% NBKP pulp, beating concentration 3.5, Beating degree 30°SR, wet weight 6g; Poplar pulp 20%, beating concentration 3.5%, beating degree 30°SR, wet weight 1.6g; BCTMP pulp 10%, beating concentration 3.5%, beating degree 40°SR, wet weight Weight 5g; deinking pulp 45%; add light calcium 10Kg / t, concentration 10%, whitening agent stock solution 1Kg / t; add yellow dye 0.01Kg to the forebay pond / t, concentration 0.2%, red dye 0.01Kg / t, concentration 0.15%, cationic starch 5Kg / t, concentration 3%; add AKD sizing agent stock solution 20Kg / t before the sizing pump; The operating parameters are: netting concentration: 0.8%, vacuum degree of forming area 1: -1-pa, vacuum degree of couch roll area 1: -50Kpa, vacuum degree of high vacuum box...

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Abstract

The invention relates to a production technique for producing a novel school paper by utilizing waste paper alkalescent deinked pulp in the paper making industry. The technical proposal of the invention is as follows: the components of the raw materials of the pulp preparing procedure and the proportions of the components by weight are as follows: 8 percent to 10 percent of NBKP pulp with beating concentration of 3.5 to 4.5 percent, beating degree of 30 to 50SR and wet weight of 6 to 8g; 20 percent to 30 percent of aspen pulp with beating concentration of 3.5 to 4.5 percent, beating degree of 30 to 45SR and wet weight of 1.6 to 2.0g; 10 percent to 20 percent of BCTMP pulp with beating concentration of 3.5 to 4.5 percent, beating degree of 40 to 55SR and wet weight of 5 to 6g; and 45 percent to 50 percent of deinked pulp. By adopting the alkalescent deinking technology, the invention increases the white degree and the dust content of the deinked pulp; and by adopting the neutral inter-pulp sizing technology of the deinked pulp with the pH value of 7.5 to 8, the water absorption capacity of the finished paper surface is controlled within 20-50g / m2 so as to reduce the production cost and achieve the proposal of environmental protection.

Description

technical field [0001] The invention relates to a production process in the papermaking industry, in particular to a production process for producing new teaching material paper by using waste paper weakly alkaline deinked pulp. Background technique [0002] In the existing papermaking technology, the finished paper produced by using waste paper weak alkaline deinking pulp has low paper surface whiteness, many residual ink spots, and a lot of waste water, causing serious pollution. Contents of the invention [0003] The purpose of the present invention is to provide a new type of teaching paper production process with good paper surface whiteness, less ink dots, and green environmental protection in view of the defects in the prior art. [0004] Its technical scheme is: including pulp mixing process, forebay, desanding and degassing, pressure screening and paper machine papermaking process, the raw material composition and weight ratio of the pulp mixing process are: 8%-10...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21H17/66D21H21/32D21H21/28D21H17/29D21H21/16D21F11/00
Inventor 李建华田居龙隋金明张凤山张安钵刘燕韶卜荣鹏蔡文忠郑丰林魏立军
Owner HUATAI GROUP