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Process for preparing cultural paper by utilizing full-recovered pulp

A culture paper, fully recycled technology, applied in the field of papermaking technology, can solve the problems of dusty impurities and low whiteness

Inactive Publication Date: 2012-09-19
DONGGUAN NINE DRAGONS PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the production of cultural paper still uses log pulp, or high-quality office waste paper, which not only relies heavily on high-quality office waste paper raw materials, but also prepares pulp due to low whiteness and many dust impurities. It is limited that it can only be used in the copying of low-grade cultural paper

Method used

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  • Process for preparing cultural paper by utilizing full-recovered pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A process for preparing cultural paper using fully recovered pulp, specifically a process for preparing office paper with fully recovered pulp, comprising the following steps:

[0055] Step A, waste paper raw material selection and feeding: American waste 37#: Japanese waste 5#: American waste 10#: American waste 8# according to the weight percentage of 30%: 30%: 20%: 20% and feeding to shreds in the pulper.

[0056] Step B, disintegration: add 0.4% NaOH, 0.6-0.7% NaOH in the disintegration area of ​​the front section of the drum pulper 2 Sio 2 , 0.2-0.3% industrial soap and 0.05% H 2 o 2 Wait for chemicals, and then add white water at 70-80°C to make the concentration of the disintegration zone 20-22%, the temperature at 50-60°C, and the pH value at 9-10.5. The waste paper raw materials are gently pulped to obtain pulp.

[0057] Step C. Screening and purification: first remove impurities from the slurry, then pass through a high-concentration slag remover, a first-...

Embodiment 2

[0076] A process for preparing cultural paper using fully recovered pulp, specifically a process for preparing office paper with fully recovered pulp, comprising the following steps:

[0077] Step A, waste paper raw material selection and feeding: American waste 37#: Japanese waste 5#: American waste 10#: American waste 8# according to the weight percentage of 20%: 40%: 25%: 15% and feeding to pulping in the plane.

[0078] Step B, disintegration: add 0.5 NaOH, 0.6-0.7% NaOH in the disintegration area of ​​the front section of the drum pulper 2 Sio 2 , 0.2-0.3% industrial soap and 0.03% H 2 o 2 Wait for chemicals, and then add white water at 70-80°C to make the concentration of the disintegration zone 20-22%, the temperature at 50-60°C, and the pH value at 9-10.5. The waste paper raw materials are gently pulped to obtain pulp.

[0079] Step C. Screening and purification: first remove impurities from the slurry, then pass through a high-concentration slag remover, a first-s...

Embodiment 3

[0098] A process for preparing cultural paper using fully recovered pulp, specifically a process for preparing office paper with fully recovered pulp, comprising the following steps:

[0099] Step A, waste paper raw material selection and feeding: American waste 37#: Japanese waste 5#: American waste 10#: American waste 8# according to the weight percentage of 30%: 30%: 30%: 10% and feeding to shreds in the pulper. .

[0100] Step B, disintegration: add 0.6 NaOH, 0.6-0.7% NaOH in the disintegration area of ​​the front section of the drum pulper 2 Sio 2 , 0.2-0.3% industrial soap and 0.06% H 2 o 2 Wait for chemicals, and then add white water at 70-80°C to make the concentration of the disintegration zone 20-22%, the temperature at 50-60°C, and the pH value at 9-10.5. The waste paper raw materials are gently pulped to obtain pulp.

[0101] Step C. Screening and purification: first remove impurities from the slurry, then pass through a high-concentration slag remover, a firs...

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Abstract

The invention belongs to the technical field of a papermaking process and particularly relates to a process for preparing cultural paper by utilizing full-recovered pulp. The process for preparing the cultural paper by utilizing the full-recovered pulp comprises the following preparation steps of: a step A of sorting and loading waste paper raw materials; a step B of beating; a step C of screening and purifying; a step D of carrying out primary floatation deinking; a step E of carrying out primary concentration and heat dispersion; a step F of carrying out secondary floatation deinking; a step G of carrying out secondary concentration and heat dispersion; a step H of carrying out oxidation bleaching; a step I of carrying out reduction bleaching; a step J of storing in a tower; a step K of milling pulp; a step L of preparing the pulp; a step M of forming and manufacturing the paper with the pulp; a step N of squeezing and dehydrating; a step O of drying; a step P of squeezing and sizing; and a step Q of carrying out press polishing and then completing processing of a finished product by the working sections of reeling, rewinding, packaging and warehousing. According to the process disclosed by the invention, the high-quality cultural paper of which the appearance quality and the physical indexes all reach the domestic and overseas standards is produced by utilizing the low-price waste paper raw materials; the production cost is reduced; the production environment is clean and environmental-friendly; and the production efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of papermaking technology, and in particular relates to a technology for preparing cultural paper by utilizing fully recovered pulp. Background technique [0002] For paper pulp, the pulp obtained directly from fiber raw materials (usually wood) is called primary fiber or primary fiber, and the pulp obtained from waste paper is called recycled fiber or secondary fiber. In addition to the direct source of plant raw materials, pulping fiber raw materials also have another important raw material resource, which is the secondary fiber after pulping of paper and cardboard. For countries that lack fiber raw materials, the use of secondary fibers has important economic significance. For the paper industry, waste paper is a very important reusable resource, and recycled paper is a term currently proposed for such reusable resources. Because the raw materials are easy to get, and the process is simple, more importa...

Claims

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Application Information

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IPC IPC(8): D21H11/14D21H17/67D21H21/30D21C5/02
CPCY02W30/64
Inventor 张成飞林新阳明星邵珠明刘灼星
Owner DONGGUAN NINE DRAGONS PAPER IND
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