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A production process for reproducing high-strength corrugated paper from waste paper

A production process and corrugated paper technology, applied in the field of papermaking, can solve the problems of difficult sludge treatment, large amount of chemicals used, and high cost of sludge treatment, so as to save energy consumption and time of refining, facilitate secondary utilization, and improve physical Effects of morphology and chemical structure

Active Publication Date: 2021-06-15
东莞顺裕纸业有限公司
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Problems solved by technology

[0003] At present, the recycling of corrugated paper from waste paper needs to go through a series of steps such as pulping, screening, purification, liquid removal, washing, concentration, heat dispersion, rubbing, flotation, deinking, and bleaching. Disadvantages such as large consumption, low fiber recovery rate, large amount of chemicals, low production efficiency, large sludge discharge, difficult sludge treatment and high sludge treatment cost

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  • A production process for reproducing high-strength corrugated paper from waste paper
  • A production process for reproducing high-strength corrugated paper from waste paper

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Embodiment Construction

[0060] The following are only preferred embodiments of the present invention, and therefore do not limit the protection scope of the present invention.

[0061] A production process for reproducing high-strength corrugated paper from waste paper, comprising the following steps,

[0062] In the shredding step, the recovered waste paper is put into a shredder for shredding to obtain waste paper scraps. Preferably, the maximum diameter of the waste paper scraps does not exceed 0.5 cm;

[0063] In the drying step, the waste paper scraps are put into a multi-layer belt dryer for drying treatment, and the moisture content of the waste paper scraps is controlled to be less than 0.5%;

[0064] In the ultrasonic electrostatic separation step, the waste paper scraps that have passed the drying step are quantitatively put into the ultrasonic electrostatic separation device through the quantitative delivery device 4 for ultrasonic electrostatic separation treatment, wherein,

[0065] The...

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Abstract

The invention discloses a production process for remanufacturing high-strength corrugated paper by using waste paper. Filtration step, step-by-step high-consistency slag removal step, distributed high-consistency filter press step, dilution step, primary pulp compound pretreatment step, refining step, screening step, pulp blending step, sheet-making step, strengthening step, wet paper Drying and pressing steps, surface sizing steps, paper drying steps, etc., and finally winding to obtain finished corrugated paper. Compared with the existing technology, it enables directional physical separation of waste paper materials before the pulping step, which further reduces the damage of papermaking fibers and reduces the use of chemical agents. It is environmentally friendly and reduces the treatment cost of papermaking waste , Improve production efficiency and reduce the production cost of the enterprise.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a production process for reproducing high-strength corrugated paper from waste paper. Background technique [0002] Pulping and papermaking technology in the world today is developing towards reducing pollution, saving energy, water resources and making full use of waste paper fibers. Among them, the production of corrugated paper with waste paper as raw material is the production item chosen by most paper factories. [0003] At present, the recycling of corrugated paper from waste paper needs to go through a series of steps such as pulping, screening, purification, liquid removal, washing, concentration, heat dispersion, rubbing, flotation, deinking, and bleaching. It has disadvantages such as large consumption, low fiber recovery rate, large amount of chemicals, low production efficiency, large sludge discharge, difficult sludge treatment and high sludge treatment cost. C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H11/14D21B1/02D21C5/00D21C5/02D21F11/12
CPCD21B1/02D21C5/005D21C5/022D21F11/12D21H11/14Y02W30/64
Inventor 刘伟锋赖耀康刘志锋
Owner 东莞顺裕纸业有限公司
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