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How Paper is Made

A manufacturing method and paper technology, applied in the field of paper manufacturing, can solve the problems of low paper folding resistance

Active Publication Date: 2016-06-29
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is to provide a paper manufacturing method, which can solve the technical problem of low folding endurance of paper in the prior art

Method used

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] see figure 1 , figure 1 is a flow chart of the first embodiment of the paper manufacturing method of the present invention. In this embodiment, the manufacturing method of paper comprises:

[0035] Step S11: preparing slurry with NBKP, LBKP and APMP according to a certain ratio and diluting the slurry.

[0036] In step S11, NBKP refers to bleached kraft softwood pulp, LBKP refers to bleached kraft hardwood pulp, APMP refers to alkaline hydrogen peroxide mechanical pulp, and the ratio of NBKP, LBKP and APMP is NBKP:LBKP:APMP=20:60 : 20, and the slurry is all prepared according to this ratio in each of the following embodiments, certainly in other embodiments also can be prepared in other ratios according to actual conditions.

[0037] Step S12: When the concentration of the slurry is 4%, add filler and cationic starch with a low degree of su...

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Abstract

The invention discloses a manufacturing method of a paper sheet. The manufacturing method comprises the steps of preparing pulp by using NBKP (Nadelholz Bleaching Kraft Pulp), LBKP (Laubholz Bleaching Kraft Pulp) and APMP (Alkaline Peroxide Mechanical Pulp) according to a certain ratio, and diluting the pulp; adding cationic starch with high substitution degree larger than or equal to 0.06 into the pulp when the concentration of the pulp is up to 0.4-1%, wherein the additive amount of the cationic starch with the high substitution degree accounts for 0.01-2% of that of oven dry stock; preparing the paper sheet by using the pulp. In such a way, the folding endurance of the manufactured paper sheet can be greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of paper production, in particular to a paper production method. Background technique [0002] The folding endurance of paper refers to the number of folds when paper is folded at a certain angle until it breaks under a certain tension. It is particularly important for box and box making paper and cardboard. With the deterioration of the quality of fiber raw materials in the paper industry and the continuous increase in the amount of fillers, the folding resistance of paper has become a major problem that limits the application of paper. Paper with poor folding resistance will cause the folds of printed matter or handbags to burst, which will affect the appearance and use effect of the paper. The main factors affecting the paper folding endurance are the average fiber length and the bonding force between fibers. [0003] Generally speaking, the folding endurance will increase with the increase of beating d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/00D21H17/29
Inventor 刘翔飞马朴秦昀昌
Owner GOLD EAST PAPER JIANGSU