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Production process of advanced grey board paper composite special core paper

A production process and technology of grey board paper, applied in papermaking, papermaking, textiles and papermaking, etc., can solve the problem of high cost of pulp, achieve good flatness, firm bonding, and improve the effect of product paper

Active Publication Date: 2019-08-02
LIANSHENG PAPER IND LONGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the single-ash grayboard paper uses ONP waste newspaper pulp as the lining layer, the cost of the pulp is high, and the core paper used in the composite paperboard does not need the lining. Therefore, on the basis of the patented technology production process, it is necessary to develop a high-grade grayboard The production process of paper composite special core paper, the production of composite special core paper to replace single gray gray cardboard for the core layer of composite gray cardboard, in order to further improve the product quality level of gray cardboard, reduce overall production costs, and improve product competitiveness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the following production process, a special core paper for compounding high-grade gray board paper is produced.

[0034] (1) pulping

[0035] Using twig wood chips as raw materials, wood chips are thermally ground, one-stage fine grinding, two-stage fine grinding, fine sieve screening, and inclined net concentration to obtain wood chip pulp. The average particle size of the wood chip pulp is D 50 is 0.31mm, and the percussion degree is 10°SR;

[0036] Using waste cardboard (OCC waste paper) as raw material, through conventional OCC pulping line feeding, crushing, high-concentration slag removal, classification screening, low-concentration slag removal, fine screening, multi-disk concentration, and fine pulp and The pulp storage process produces OCC pulp, which includes OCC long-fiber pulp and OCC short-fiber pulp. The beating degree of the OCC long-fiber pulp is 25°SR, and the beating degree of the OCC short-fiber pulp is 34 °SR;

[0037]Recycling of fin...

Embodiment 2

[0048] The difference with embodiment 1 is:

[0049] (1) pulping

[0050] When making wood pulp, the average particle size D of the wood pulp 50 is 0.45mm, and the percussion degree is 8°SR;

[0051] When making OCC pulp, the beating degree of the OCC long-fiber pulp is 29°SR, and the beating degree of the OCC short-fiber pulp is 32°SR;

[0052] When the recovered slurry is prepared, the ash content of the recovered slurry is 35%, and the degree of beating is 11°SR.

[0053] (2) mix pulp

[0054] Quantitative batter 65g / m 2 , based on the total amount of pulp, the proportion of flour pulp is 20%;

[0055] Base slurry quantitative 65g / m 2 , based on the total amount of slurry, the proportion of base slurry is 20%;

[0056] The weight of the core pulp is 195g / m 2 , taking the total amount of pulp as a benchmark, the ratio of the core pulp is 60%. Recover 40% of slurry, 9% of reused sludge, and 16% of OCC slurry.

[0057] The amount of the adhesive used for each ton of ...

Embodiment 3

[0060] The difference with embodiment 1 and 2 is:

[0061] (1) pulping

[0062] When making wood pulp, the average particle size D of the wood pulp 50 is 0.30mm, and the percussion degree is 9°SR;

[0063] When making OCC pulp, the beating degree of the OCC long-fiber pulp is 27°SR, and the beating degree of the OCC short-fiber pulp is 30°SR;

[0064] When the recovered slurry is prepared, the ash content of the recovered slurry is 33%, and the degree of beating is 12°SR.

[0065] (2) mix pulp

[0066] Quantitative batter 210g / m 2 , based on the total amount of pulp, the proportion of flour pulp is 30%;

[0067] Base slurry quantitative 210g / m 2 , based on the total amount of slurry, the proportion of base slurry is 30%;

[0068] The weight of the core pulp is 280g / m 2 , taking the total amount of pulp as a benchmark, the proportioning ratio of the core pulp is 40%. Recover 43% of slurry, 9% of reused sludge, and 15% of OCC slurry.

[0069] The amount of the adhesive...

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Abstract

The invention relates to the technical field of pulping and papermaking, in particular to a production process of advanced grey board paper composite special core paper. The production process does not use ONP pulp, both surface pulp and bottom pulp adopt 100 percent of OCC pulp, formed paper is good in flatness and is not layered, and the adhesive absorption property and the bonding property of the paper are improved, and the use requirements of the advanced composite grey board paper special core paper are met. Moreover, as core pulp with a larger pulp blending proportion adopts OCC pulp, recovery slag pulp, wood chip pulp and reuse sludge mixed pulp, the quantification, the compactness, the interlayer bonding force, the thickness and the ash content are guaranteed; an ONP pulping line and a paper machine lining section are stopped, so that the pulping power and the installed power of a paper machine are reduced, and the purposes of energy conservation, consumption reduction and product paper improvement are achieved. The produced advanced multi-layer composite special core paper in stead of single grey board paper, has a gram weight range of 280-700 g / m<2> and is used for a corelayer and an inner layer, Through measurement and calculation, the production cost per ton of paper is about 70 yuan; calculated by the annual output of 150,000 tons, the annual production cost can be saved by 10,500,000 yuan.

Description

technical field [0001] The invention relates to the technical field of pulping and papermaking production, in particular to a production process of high-grade gray board paper composite special core paper. Background technique [0002] Gray board paper is a kind of industrial thick cardboard, which is used as a base material for packaging and printing industries to make exquisite book covers, game puzzles, file folders, file folders, stationery boxes, gift boxes, wine, cosmetics and other commodity packaging boxes, etc. product. Gray cardboard is divided into single gray and double gray, and the main weight of single gray gray cardboard is 280g / m 2 、300g / m 2 、350g / m 2 、400g / m 2 、450g / m 2 , 500g / m 2 , 550, 600g / m 2 、650g / m 2 、700g / m 2 , The indicators of single-gray gray board paper are quantitative and thickness, which require uniform quantitative and thickness and strict control of the deviation range, so as to meet the packaging and printing specifications of cust...

Claims

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Application Information

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IPC IPC(8): D21F11/00D21H11/14D21H11/08D21H17/01
CPCD21F11/00D21H11/08D21H11/14D21H17/01
Inventor 陈光军赵恺张永春薛荣军吴江楠朱琦朱应鹏陈祥发周志强刘儒金华
Owner LIANSHENG PAPER IND LONGHAI
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