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Production method for making high-grade cardboard using brush wood sheet hot grinding pulp to replace OCC (obsolescence corrugated cardboard) pulp

A production method and pulp blending technology, which is applied in the field of thermally refining twig wood chips instead of OCC pulp to blend high-grade cardboard, can solve the problems of low stiffness, unstable thickness, and low thickness of gray board paper, and achieve reduction in consumption, The effect of low cost and reduction of water, electricity and steam per ton of slurry

Active Publication Date: 2016-12-14
LIANSHENG PAPER IND LONGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For this reason, it is necessary to provide a production method of thermally refining twig wood chips to replace OCC pulp and make high-grade cardboard, which is used to solve the problems of low thickness, unstable thickness and low stiffness of gray board paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A kind of production method of thermally refining pulp of twig wood chips to replace OCC pulp and make high-grade cardboard of the present invention comprises the following steps:

[0044] Stock preparation:

[0045] Using waste cardboard as raw material, OCC pulp is produced through conventional OCC pulping line feeding, crushing, deslagging, screening, thickening, pulp refining, and pulp storage;

[0046] Using waste newspapers as raw materials, ONP pulp is produced through ONP pulp line feeding, crushing, slag removal, screening, concentration, heat dispersion, pulp storage and other processes;

[0047] Using twig wood chips as raw materials, sawdust pulp is prepared through the processes of wood pulp preparation line feeding, wood chip thermal grinding, refining pulp, screening, concentration, and pulp storage. 100:1:20 to form a mixture, and cultivate it under the following conditions: temperature 30°C, time 10 days, the binder is carboxymethyl cellulose, carboxym...

Embodiment 2

[0071] The difference between embodiment two and embodiment one is:

[0072] Stock preparation:

[0073] Using twig wood chips as raw materials, sawdust pulp is prepared through the processes of wood pulp preparation line feeding, wood chip thermal grinding, refining pulp, screening, concentration, and pulp storage. 100:1:20 to form a mixture, cultured under the following conditions: temperature 40°C, time 6 days, the binder is carboxymethyl cellulose, sodium carboxymethyl cellulose, sodium carboxymethyl starch or one of the starches;

[0074] Blending:

[0075] After the ONP slurry is thickened through the surface layer mixing tank and the surface layer forebay, it is sent to the surface layer flow delivery department for dilution, screened before the wire, and the surface layer headbox is sent to the surface layer to distribute the slurry on the Internet as the gray board paper hanging layer;

[0076] The mixture of OCC pulp and sawdust pulp is sent to the lining layer mi...

Embodiment 3

[0081] The difference between embodiment three and embodiment one is:

[0082] Stock preparation:

[0083] Using twig wood chips as raw materials, sawdust pulp is prepared through the processes of wood pulp preparation line feeding, wood chip thermal grinding, refining pulp, screening, concentration, and pulp storage. 100:1:20 to form a mixture, and cultivate it under the following conditions: temperature 50°C, time 10 days, the binder is carboxymethyl cellulose, carboxymethyl cellulose sodium, carboxymethyl starch sodium or one of the starches;

[0084] Blending:

[0085] After the ONP slurry is thickened through the surface layer mixing tank and the surface layer forebay, it is sent to the surface layer flow delivery department for dilution, screened before the wire, and the surface layer headbox is sent to the surface layer to distribute the slurry on the Internet as the gray board paper hanging layer;

[0086] The mixture of OCC pulp and sawdust pulp is sent to the lini...

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Abstract

The invention relates to a production method for making a high-grade cardboard using brush wood sheet hot grinding pulp to replace OCC (obsolescence corrugated cardboard) pulp. The production method comprises the following steps of pulp preparation: using waste box cardboards to prepare OCC pulp; using ONP (old news paper) to prepare ONP pulp; using brush wood sheets to prepare wood chip pulp, mixing the wood chip pulp, saccharomyces chevalieri and a binder, and culturing; pulp blending: using the ONP pulp as a grey board topcoat layer; mixing the OCC pulp and the wood chip pulp to form a grey board liner layer; mixing the OCC pulp and the wood chip pulp to form a grey board core layer; mixing the OCC pulp and the wood chip pulp to form a grey board bottom layer; paper making: using the approaching pulp to make the paper. Compared with the prior art, the production method has the advantages that the wood chip pulp is cultured by microorganisms, so that the thickness, compactness and stiffness of grey board are improved; the raw material structure of the grey board is optimized, the usage amount of OCC waste paper is reduced, the problem of raw material cost of the grey board is reduced, and the economic benefit is obviously improved.

Description

technical field [0001] The invention relates to the technical field of pulping and papermaking production, in particular to a production method of thermally refining twig wood chips instead of OCC pulp and preparing high-grade cardboard. Background technique [0002] In recent years, the traditional technology of gray board paper production is to use waste cardboard as raw material, prepare OCC slurry through OCC pulping line as gray board paper lining layer, core layer, bottom layer slurry; use old newspaper as raw material, through ONP line ONP pulp was prepared as gray board liner pulp. The main index thickness of gray board paper produced by this process is low, and when the thickness fluctuation is caused by fluctuations in raw materials and other reasons, there is no effective means to adjust the thickness in time, and the product quality often fails to meet the requirements, which limits the use of the product. In some production lines, sawdust is mixed with sawdust ...

Claims

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Application Information

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IPC IPC(8): D21B1/30D21B1/32D21C5/00D21C5/02D21F11/00
CPCD21B1/30D21B1/32D21C5/005D21C5/02D21F11/00Y02W30/64
Inventor 王贵敏陈光军覃本春李浩
Owner LIANSHENG PAPER IND LONGHAI
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