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Paper preparing process

A preparation process and paper technology, applied in the field of paper preparation process, can solve problems such as excessive use, residue, and reduced utilization rate of paper-making chemicals, and achieve the effects of reducing residue, reducing usage, and improving use efficiency

Active Publication Date: 2013-08-07
GOLD HONG YE PAPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the improvement of consumers' demand for the softness of tissue paper, the amount of softener used in papermaking is increasing, which will increase the investment cost of papermaking chemicals on the one hand, and may lead to a decrease in the softener used in papermaking. Excessive use of the softener will remain in the white water system, affecting the charge of the white water system, reducing the utilization of other chemicals used in papermaking, leading to a vicious circle

Method used

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Effect test

preparation example Construction

[0010] The preparation technology of paper of the present invention, it comprises the steps:

[0011] (1) Provide softwood pulp and hardwood pulp, wherein the dry mass ratio of hardwood pulp to softwood pulp is between 1 and 4, and deflake the softwood pulp and hardwood pulp respectively.

[0012] The deflaking step uses a deflaking machine. During deflaking, it is preferable to control the mass percentage concentration of softwood pulp and hardwood pulp to be 3% to 15%, respectively. The effect of deflaking in this concentration range is better.

[0013] In the process of defibering, besides shearing, kneading and carding, the cell wall of the fiber also undergoes displacement, deformation and rupture to absorb water and swell, resulting in fine fibrilization, which makes the pulp soft and plastic, and also makes the fiber More hydroxyl groups are exposed in the protein molecular chain, which improves the binding force between fibers.

[0014] The fluffed softwood pulp and h...

Embodiment 1

[0025] The softener from Buckman Company is used, and the amount of softener is 0.286% of the dry mass of hardwood fiber. The mass ratio of hardwood pulp to softwood pulp is 70:30. The mass percent concentration of fiber is 5% during the process, and then the hardwood pulp is refined for 1000 rpm, and the softwood pulp is refined for 2500 rpm. Put it into hardwood pulp for 5 minutes, then add coniferous pulp to mix with it, and make sheets after mixing, the basis weight of the paper is 30g / m 2 .

[0026] After testing, the paper made by this method has a breaking length of 2.06km.

Embodiment 2

[0032] The softener from Buckman Company is used, and the amount of softener is 1.429% of the dry mass of hardwood fiber. The mass ratio of hardwood pulp to softwood pulp is 70:30. The mass percent concentration of fiber is 5% during the process, and then the hardwood pulp is refined for 1000 rpm, and the softwood pulp is refined for 2500 rpm. Put it into hardwood pulp for 5 minutes, then add coniferous pulp to mix with it, and make sheets after mixing, the basis weight of the paper is 30g / m 2 .

[0033] After testing, the paper made by this method has a breaking length of 1.10km.

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Abstract

A paper preparing process includes steps of: providing softwood pulp and hardwood pulp and defibering the softwood pulp and the hardwood pulp respectively, wherein the absolute dry mass ratio of the hardwood pulp and the softwood pulp ranges from 1 to 4; filling softening agents into the defibered hardwood pulp; mixing the hardwood pulp filled with the softening agents and the defibered softwood pulp to obtain mixed pulp; and leading the mixed pulp to be subjected to papermaking to obtain paper. The paper preparing process can improve use ratio of the softening agents, reduce consumption of the softening agents and reduce the residual quantity of the softening agents in a white water system.

Description

technical field [0001] The invention relates to a paper preparation process. Background technique [0002] With the improvement of consumers' demand for the softness of tissue paper, the amount of softener used in papermaking is increasing, which will increase the investment cost of papermaking chemicals on the one hand, and may lead to a decrease in the softener used in papermaking. Excessive use of the softener will remain in the white water system, affecting the charge of the white water system, reducing the utilization of other chemicals used in papermaking, leading to a vicious circle. Contents of the invention [0003] In view of this, it is necessary to provide a paper preparation process, which can better utilize the softening agent usage efficiency and reduce the usage amount of the softening agent. [0004] A paper preparation process, comprising the steps of: [0005] Provide softwood pulp and hardwood pulp, wherein the dry mass ratio of hardwood pulp to softw...

Claims

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Application Information

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IPC IPC(8): D21B1/34
Inventor 陈海霞孟凡翠
Owner GOLD HONG YE PAPER
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