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Papermaking method capable of improving paper quality

A quality and paper technology, applied in the field of papermaking to improve paper quality, can solve the problems of reducing the efficiency of dry strength agents and affecting the quality of paper products, and achieve the effect of maximizing the dosage of fillers, promoting bonding and reducing dosage.

Inactive Publication Date: 2017-09-05
山东励仙电力工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] If you blindly pursue the increase of ash content in paper products to reduce the cost of papermaking, it will affect the quality of the resulting paper products
Example: Paper dry strength agents have a tendency to coat paper filler particles, so adding more filler will reduce the efficiency of the dry strength agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A papermaking method for improving paper quality provided in this embodiment, the papermaking method for improving paper quality is specifically:

[0026] Step 1: adding the internally added starch to the milled slurry and sending it to the pipeline of the pulping tower, the dry pulp ratio of the internally added starch to the milled slurry is 14kg / t. When the liquid level of the slurry in the pulping tower is 45%, use the stirrer in the pulping tower to fully stir and mix the starch added in and the slurry after grinding, and then add flocculant in the pulping tower, the flocculant It has a reduced viscosity of 13 dL / g, a molecular weight of greater than or equal to 1,300,000 and less than or equal to 7,000,000, and a cationic charge of 35 mol%. Described step one per ton of packing, the consumption of described flocculant is 4kg. Using the agitator in the slurry forming tower to stir the above-mentioned mixture evenly to form the first mixed slurry, the particle size...

Embodiment 2

[0031] A papermaking method for improving paper quality provided in this embodiment, the papermaking method for improving paper quality is specifically:

[0032] Step 1: adding the internally added starch to the milled slurry and sending it to the pipeline of the pulping tower, the dry pulp ratio of the internally added starch to the milled slurry is 12kg / t. When the liquid level of the slurry in the pulping tower is 50%, use the agitator in the pulping tower to fully stir and mix the starch added in and the slurry after grinding, and then add flocculant in the pulping tower, the flocculant It has a reduced viscosity of 7 dL / g, a molecular weight of greater than or equal to 1,300,000 and less than or equal to 7,000,000, and a cationic charge of 40 mol%. In the step one, the amount of the flocculant is 0.2 kg per ton of filler. Using the agitator in the pulping tower to stir the above-mentioned mixture evenly to form the first mixed slurry, the particle size of the first mixed...

Embodiment 3

[0037] A papermaking method for improving paper quality provided in this embodiment, the papermaking method for improving paper quality is specifically:

[0038] Step 1: adding the internally added starch to the milled slurry and sending it to the pipeline of the pulping tower. The dry pulp ratio of the internally added starch to the milled slurry is 13kg / t. When the liquid level of the slurry in the pulping tower was 47%, use the stirrer in the pulping tower to fully stir and mix the starch added in and the slurry after grinding, and then add flocculant in the pulping tower, the flocculant It has a reduced viscosity of 9 dL / g, a molecular weight of greater than or equal to 1,300,000 and less than or equal to 7,000,000, and a cationic charge of 39 mol%. Described step one per ton of packing, the consumption of described flocculant is 2kg. Using the agitator in the slurry forming tower to stir the above-mentioned mixture evenly to form the first mixed slurry, the particle size...

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PUM

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Abstract

The invention belongs to the technical field of paper product processing and provides a papermaking method for improving the quality of paper, comprising: adding starch to the pipeline of the milled slurry and sending it to the pulping tower, where the slurry level in the pulping tower is 45% ‑50%, then add flocculant to the pulping tower, stir evenly to form the first mixed slurry; add filler modifier, the filler modifier includes silicon dioxide, aluminum oxide, magnesium oxide, Fully stir and mix evenly, add 60% of the modified filler to the slurry pump inlet at the outlet of the slurry tower, mix evenly to form the second mixed slurry, and add the remaining 40% modified filler to the mixing slurry tank to form the third Mix the slurry; add filler fixing agent, stir and transport into the paper making system. The invention can increase the ash content of the paper product without losing the quality of the obtained paper product, and at the same time reduce the production cost of the obtained paper product.

Description

technical field [0001] The invention belongs to the technical field of paper product processing, in particular to a papermaking method for improving paper quality. Background technique [0002] Ash content of paper products refers to the inorganic substances in paper products, generally including non-flammable additives (such as paper fillers) added in the production process of paper industry and non-combustible substances in pulp. The increase in the proportion of ash (especially paper filler) in paper products can greatly reduce the cost of papermaking. [0003] CN101736656A provides a papermaking method with increased filler content, the method comprising the steps of: providing a blend of filler particles, at least one strength additive and cellulose fiber raw material, treating the filler particles with a material composition, mixing the filler particles with the cellulosic fiber stock, treating the mixture with at least one strength additive, and forming a paperboard ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/06D21H17/69D21H17/28
CPCD21H21/06D21H17/28D21H17/69
Inventor 伍文慧
Owner 山东励仙电力工程有限公司
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