Processing method for regenerative semi-chemical corrugated paper

A technology for corrugated base paper and processing method, which is applied in the process of adding pulp raw materials, papermaking, and adding reinforcing agents, etc., can solve the problems of incompatibility with medium-scale production and large investment, and achieve the improvement of physical strength, good effect, and reduced loss. Effect

Inactive Publication Date: 2006-08-09
ZHEJIANG BLUESTAR HLDG GRP
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Problems solved by technology

However, this process requires a large investment and is not suitable for medium-scale production

Method used

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Embodiment Construction

[0031] 1. Ingredients: Mix waste paper imported from Japan No. 11, waste paper imported from America No. 11, and domestic old cardboard boxes according to the ratio of (30-40%): (10-15%): (60-45%), and the Load the trigger.

[0032] 2. Disintegration: The mixed waste paper composed of imported waste paper and domestic waste paper is disintegrated in a hydropulper, and the disintegration concentration is controlled at 3.5-4.5%.

[0033] 3. High-concentration desander: remove iron, sand, staples, glass and other specific impurities through high-concentration desander. Control the pulp concentration of 3 to 3.5%, and the pressure difference between the inlet and outlet of 0.1 to 0.15Mpa.

[0034] 4. Fiber separation: through the compound fiber separator, the slurry is crushed and desanded twice to remove light and heavy impurities in the slurry. Control the slurry inlet concentration of 3-3.5%, the slurry inlet pressure of 0.15-0.25Mpa, and the slurry outlet pressure of 0.1-0.1...

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Abstract

The invention is a regenerated corrugated raw paper manufacturing method, its main technical flows: mix import waste paper with internal waste paper, pulp by pulping engine, desand by high concentration desander, screen by fiber separator, desand by high concentration desander, screen by low concentration pressure sieve, desand by low concentration desander, condense by condenser, mill and pulp by medium concentration hydraulic disc, screen by pressure sieve, make by paper machine and spray papermaking chemical assistant when molding and cut by winder. The added quantity of import waste paper is 40-55% of total weight of the mixed waste paper. It changes traditional low concentration pulping technique. The technique is designed reasonably, and can effectively heighten the physical strength of the regenerated corrugated raw paper, reduce the raw material cost and be applied to medium-scale production.

Description

technical field [0001] The invention relates to a processing method of regenerated corrugated base paper, which belongs to the technical field of regenerated paper manufacturing in the papermaking industry. Background technique [0002] The existing corrugated base paper production lines using waste paper as raw materials are mainly divided into three types according to the production scale, and their processes and characteristics are also different. [0003] The traditional technological process is: waste cardboard, hydropulper disintegration, grit ditch desanding, centrifugal sieve desanding, concentrator thickening, 450 double disc mill beating, low-concentration desandering device desanding, rotor screen screening, Paper machine copying, rewinding machine slitting, and finished products. The characteristics of this process are: 1. Small production scale and small investment; 2. Outdated technology; 3. Low-grade product quality, which cannot be used...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/14D21H21/18D21H23/24
Inventor 梁敖法徐建灿单苗夫娄立江
Owner ZHEJIANG BLUESTAR HLDG GRP
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