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Method for producing corrugated medium paper using recycled waste paper

A technology for corrugated core paper and waste paper, applied in the field of corrugated core paper production process, can solve the problems of reduced pressure resistance of carton boxes, reduced strength index of base paper, moisture absorption and softening, etc., so as to reduce wear and tear, improve strength and toughness, The effect of reducing the refining time

Active Publication Date: 2019-09-27
DONGGUAN TAICHANG PAPER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the corrugated medium paper has the phenomenon of moisture absorption and softening after being placed for a long time, which leads to a decrease in the strength index of the base paper and a decrease in the pressure resistance of the produced cartons, so it is necessary to improve

Method used

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Embodiment Construction

[0025] The following descriptions are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.

[0026] A method for producing corrugated medium paper using recycled waste paper, comprising the following steps:

[0027] (1) Select waste paper, select waste paper as raw material for manufacturing corrugated medium paper;

[0028] (2) Send the waste paper into the slitting machine and cut it into strips, and the pulper will pulp the strips of waste paper, control the volume ratio of raw materials and water to obtain primary pulp, and control the pulp concentration at 30-50 %;

[0029] (3) Pump the initial slurry through the magnetic tank opened above, and absorb the iron filings in the initial slurry through a number of magnetic nets with grids inserted vertically in the magnetic tank, and then pump the initial slurry to the high concentration removal The sander removes hard impurities in the primary slurry ...

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Abstract

The invention discloses a method for producing corrugating medium paper by utilizing recycled waste paper. The method comprises the following steps: selecting the waste paper; cutting the waste paperinto strip-shaped waste paper; carrying out steps including pulping, filtering, screening and the like to obtain finely screened pulp; adding cationic rosin size, aluminum sulfate and a moisture-proofagent into a pulp storage hopper through a metering pump; uniformly stirring and mixing to obtain pulp to be ground; pumping the pulp to be ground into a pulp grinding machine and carrying out pulp grinding; enabling ultrasonic waves generated by an ultrasonic generator to act on a pulp grinding region in a process of pulp grinding by a grinding disc, so as to obtain papermaking pulp; dehydratingthe papermaking pulp by a squeezing part, drying by a drying cylinder part, carrying out surface sizing by a surface sizing machine and drying by a rear drying cylinder part; finally, rolling to obtain the corrugating medium paper. According to the method for producing the corrugating medium paper by utilizing the recycled waste paper, provided by the invention, the steps of the method are simple; the compression strength of a packaging box in a utilization process can be ensured, and the compression strength keeps a stable level; poor moisture-resisting and softening phenomena of packaging box corrugating medium paper produced by corrugating medium paper are avoided.

Description

technical field [0001] The invention relates to the technical field of corrugated medium paper production technology, in particular to a method for producing corrugated medium paper by using recycled waste paper. Background technique [0002] With the development of the packaging industry, the demand for packaging paper is increasing day by day, and the fierce market competition has also caused strict requirements and high attention on paper quality by cardboard manufacturers. Due to the advantages of reasonable structure, simple processing, light weight, low cost, and easy storage and transportation, corrugated medium paper has become the most widely used paper container packaging and is widely used in the field of transportation packaging. At present, the corrugated medium paper has the phenomenon of absorbing moisture and softening after being placed for a long time, which leads to a decrease in the strength index of the base paper and a decrease in the pressure resistanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/00D21F11/00D21H11/14D21B1/32D21D5/02D21D1/30D21H21/16D21H17/62D21H17/66
CPCD21B1/32D21D1/303D21D5/02D21F11/00D21H11/14D21H17/62D21H17/66D21H21/16D21H27/00Y02W30/64
Inventor 杜汉民杜汉杰余行宝黄奇志熊国平吴如双刘凯郑铭华郭政
Owner DONGGUAN TAICHANG PAPER CO LTD
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