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A method for ameliorating stickies in repulped stocks for making household paper

A technology for household paper and recycled pulp, applied in papermaking, textile and papermaking, fiber raw material processing, etc., can solve the problems of reduced production capacity, economic losses, and large production losses, reduce the number of paper machine shutdowns for cleaning, and improve papermaking. The effect of productivity and economic loss reduction

Inactive Publication Date: 2012-10-17
上海东冠纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the paper machine cannot continue to produce normally, and must be shut down frequently to clean the surface wire and the felt, which directly leads to a decrease in production capacity and a large production loss
All in all, stickies in recycled pulp not only cause product quality problems, but also bring serious economic losses to production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for improving stickies in recycled pulp for making household paper, diluting 800-mesh talcum powder to 8wt% with water, and using high-mesh talcum powder to adsorb to the surface of stickies to reduce its viscosity , so as to avoid the adsorption of stickies on the various parts of the paper machine. After diluting the talcum powder to a certain concentration, it is easier to mix in the slurry, adsorbed on the surface of the stickies in the slurry, and add the talc powder after dilution At the inlet of the pulping pump of the paper machine, it is added to the recycled pulp through pumping and refining. Due to the shear force of pumping and refining during the operation of the paper machine, and the talcum powder on the sticky substance has poor shear resistance , Once it falls off, it will cause greater aggregation.

[0015] The amount of talcum powder added is 8Kg / t recycled slurry. After the implementation of this technology, in the production of the same pro...

Embodiment 2

[0020] A method for improving stickies in recycled pulp for making household paper. Dilute 800-mesh talcum powder to 3 wt% with water, add it to the inlet of the pulping pump of a paper machine, and add recycled pulp through pumping and refining In, the addition amount of described talcum powder is 5Kg / t regenerated slurry.

Embodiment 3

[0022] A method for improving stickies in recycled pulp for making household paper, comprising diluting 800-mesh talcum powder to 10 wt% with water, adding it to the inlet of a pulping pump of a paper machine, and adding recycled pulp through pumping and refining In, the addition amount of described talcum powder is 10Kg / t regenerated slurry.

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PUM

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Abstract

The invention relates to a method for ameliorating stickies in repulped stocks for making household paper, comprises the steps of diluting a talcum powder, adding the diluted talcum powder on an entrance of a fan pump of a paper machine, and adding the diluted talcum powder into the repulped stocks by pumping and pulp grinding, the addition amount of the talcum powder into the repulped stock is 5-10Kg / t. The advantages of the method over the prior art are as follows: improving quality and reducing economic loss directly.

Description

technical field [0001] The invention relates to recycled pulp for papermaking, in particular to a method for improving stickies in recycled pulp for making household paper. Background technique [0002] At present, the commonly used raw materials in the paper industry are virgin bleached wood pulp, virgin bleached non-wood pulp, recycled bleached wood pulp, and recycled natural wood pulp as raw materials. Household paper mostly uses primary pulp to make high-grade household paper. Recycled pulp (regenerated bleached pulp and recycled natural color pulp) has complex sources of pulp, many impurities in the pulp, and complicated impurity removal processes. Therefore, recycled pulp It is generally suitable for medium and low-grade paper products, especially recycled natural color pulp, which is mostly used to produce packaging paper with low added value, and is less suitable for high-end household paper. The main problems in the production of recycled pulp are: many impurities ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/02
Inventor 莫建新俞伟军黄海丽张焱
Owner 上海东冠纸业有限公司
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