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A production method of wood chip thermal refining instead of OCC compounding high-grade single-sided coated gray-bottom white board paper

A single-side coating and production method technology, applied in the direction of mechanical/thermomechanical pulp, papermaking, paper machine, etc., can solve the problems of low thickness and unstable thickness of single-side coated gray bottom white board paper, and achieve significant environmental protection benefits , Reduction of production cost and remarkable effect of consumption reduction

Active Publication Date: 2017-12-15
LIANSHENG PAPER IND LONGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, it is necessary to provide a production method of thermally refining wood chips instead of OCC to prepare high-grade single-sided coated gray-bottomed whiteboard paper, which is used to solve the problem of low thickness and unstable thickness of single-sided coated gray-bottomed whiteboard paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The present invention is a kind of production method of wood chip thermal refining instead of OCC compounding high-grade single-sided coated gray-bottomed white board paper, comprising the following steps:

[0052] Stock preparation:

[0053] Surface layer DIP deinking pulp preparation - using recycled office waste paper as raw material, DIP deinking pulp is obtained after DIP deinking pulp line treatment, the whiteness value of the deinking pulp is 78, the freeness is 230ml, and the pulp is formed The appearance quality of the copy is normal;

[0054] OCC pulp preparation for the liner - use recycled mixed waste paper pulp as raw material, and process it through the OCC pulp line. After the graded and screened OCC medium fiber pulp is processed by the heat removal and dispersion system, the stickies and oil wax in the pulp are removed Effectively dispersed, the medium fiber is pulped after disc grinding and refining, and its freeness is 230ml;

[0055] Using wood chi...

Embodiment 2

[0091] The difference between embodiment two and embodiment one is:

[0092] Stock preparation:

[0093] Surface layer DIP deinking pulp preparation - using recycled office waste paper as raw material, DIP deinking pulp is obtained after DIP deinking pulp line treatment, the whiteness value of the deinking pulp is 80, and the freeness is 240ml. The appearance quality of the copy is normal;

[0094] OCC pulp preparation for the liner - use recycled mixed waste paper pulp as raw material, and process it through the OCC pulp line. After the graded and screened OCC medium fiber pulp is processed by the heat removal and dispersion system, the stickies and oil wax in the pulp are removed Effectively dispersed, the medium fiber is pulped after disc grinding and refining, and its freeness is 240ml;

[0095] Using wood chips as raw material, the wood chip pulp is produced through the processes of wood chip pulp preparation line feeding, wood chip thermal grinding, refining, screening...

Embodiment 3

[0115] The difference between embodiment three and embodiment one is:

[0116] Stock preparation:

[0117] Surface layer DIP deinking pulp preparation - using recycled office waste paper as raw material, DIP deinking pulp is obtained after DIP deinking pulp line treatment, the whiteness value of the deinking pulp is 82, and the freeness is 250ml. The appearance quality of the copy is normal;

[0118] OCC pulp preparation for the liner - use recycled mixed waste paper pulp as raw material, and process it through the OCC pulp line. After the graded and screened OCC medium fiber pulp is processed by the heat removal and dispersion system, the stickies and oil wax in the pulp are removed Effectively dispersed, the medium fiber is pulped after disc grinding and refining, and its freeness is 250ml;

[0119] Using wood chips as raw material, the wood chip pulp is produced through the processes of wood chip pulp preparation line feeding, wood chip thermal grinding, refining, screeni...

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Abstract

The invention relates to a method for producing a top-grade single-face coating manila board by replacing OCC blending with wood chip thermal pulp grinding. The method comprises the steps of preparing pulp: preparing surface layer DIP deinked pulp prepared pulp, lining OCC pulp prepared pulp and wood bit pulp, and performing mixed culture of the wood bit pulp, fission yeast microorganisms and a bonder; blending the pulp: performing surface layer pulp blending, lining pulp blending, core layer pulp blending and bottom layer pulp blending; manufacturing paper with pulp: manufacturing body paper with pulp through processes of a net portion, a squeezing part, a front drying portion, surface sizing, a rear dying portion and hard press polish; performing coating: performing precoating, floating coat and topcoat; performing press polish and reeling: performing soft press polish on coated paper, and performing reeling. Different from the prior art, by mixed culture of the wood bit pulp, the fission yeast microorganisms and the bonder, the surface chemical property and the pore structure of the wood bit pulp are modified, the thickness of the single-face coating manila board is effectively increased, and the stability of formed paper is effectively improved.

Description

technical field [0001] The invention relates to the technical field of pulping and papermaking production, in particular to a production method for making high-grade single-sided coated gray-bottom white board paper by thermally refining wood chips instead of OCC. Background technique [0002] In the prior art, the weight ratio of the core layer of gray bottom whiteboard paper coated on one side is large, and the properties of the core layer slurry have a great influence on the thickness, tightness, and ash index of the paper. The traditional production technology is to mix office waste paper 1. Waste and old containerboard paper is used as raw material, and OCC pulp is prepared through OCC pulping line, which is used as the core layer pulp for coating gray bottom white board paper. The traditional process uses mixed office waste paper and waste containerboard pulp as the core layer of coated gray-bottomed white board paper. The thickness of the finished paper is often low, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F11/12D21H11/08D21H11/14D21B1/14
CPCD21B1/30D21B1/325D21C5/005D21C5/025D21F11/00Y02W30/64
Inventor 王贵敏陈光军袁柳
Owner LIANSHENG PAPER IND LONGHAI
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