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Manufacturing method for high strength internal binding force cardboard paper

A production method and technology of containerboard paper, applied in papermaking, paper machine, waste paper processing, etc., can solve the problems of low production efficiency, many composite layers, and poor bonding force, so as to reduce sewage discharge and improve economic benefits , the effect of reducing production costs

Inactive Publication Date: 2015-05-13
LIANSHENG PAPER IND LONGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing domestic containerboard paper not only has poor bonding force, but also has many composite layers, complicated process, low production efficiency and high cost.

Method used

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  • Manufacturing method for high strength internal binding force cardboard paper

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Experimental program
Comparison scheme
Effect test

Embodiment 2

[0040] Embodiment 2 A kind of production method of high-strength internal cohesion linerboard is carried out according to the following steps:

[0041] (1) For ingredients, imported waste paper is mixed with domestic waste paper. Imported waste paper accounts for 32% of the total waste paper. The domestic waste paper is a mixture of one or more of newspaper, cardboard or printing paper. Waste paper can be US Waste No. 4, US Waste No. 6 or US Waste No. 13 or a mixture of them.

[0042] (2) Add water and disintegrate to make a slurry, and disintegrate the waste paper in a hydropulper to make a high-concentration slurry.

[0043] (3) After the slurry is desanded and coarsely screened to remove impurities, the long fiber and short fiber in the slurry are separated by a grading screen, and the short fiber is screened to remove impurities through a low-concentration deslagging device; the long fiber is passed through a low-concentration deslagging device After screening the grit, a...

Embodiment 3

[0053] Embodiment 3 A kind of production method of high-strength internal cohesion linerboard is carried out according to the following steps:

[0054] (1) Ingredients, mix imported waste paper with domestic waste paper, imported waste paper accounts for 40% of the total waste paper, the domestic waste paper is a mixture of one or more of newspaper, cardboard or printing paper, imported Waste paper can be US Waste No. 4, US Waste No. 6 or US Waste No. 13 or a mixture of them.

[0055] (2) Add water and disintegrate to make a slurry, and disintegrate the waste paper in a hydropulper to make a high-concentration slurry.

[0056] (3) After the slurry is desanded and coarsely screened to remove impurities, the long fiber and short fiber in the slurry are separated by a grading screen, and the short fiber is screened to remove impurities through a low-concentration deslagging device; the long fiber is passed through a low-concentration deslagging device After screening the grit, a...

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Abstract

The invention relates to a manufacturing method for high strength internal binding force cardboard paper. The method comprises the following steps: ingredients are prepared; pulp materials are prepared by water-added size degradation; a combining, screening and purifying process is carried out on the pulp materials; medium consistency beating is carried out; pulp preparation is carried out on processed pulp materials which meet operating conditions; the prepared pulp materials are sent to a short circulatory system for dilution and residue removal; degassing is carried out on the pulp materials; chemicals combining agents are added into the pulp materials; paper is coated with two layers of the pulp materials, and a double-layer wet paper web is prepared after water filtration is carried out; three-stage squeezing and dewatering is carried out on the prepared double-layer wet paper web; prebaking and drying are carried out on dewatered wet paper; the two faces of the prebaked and dried paper are coated with a starch-type surface sizing agent; postbaking and drying are carried out on the starch-type surface sizing agent coated paper. According to the method, the high strength internal binding force cardboard paper is prepared by using secondary fibers, so that the production cost is lowered, the discharge capacity is decreased, and the economic benefit is increased.

Description

technical field [0001] The invention relates to a production method of high-strength internal bonding force containerboard, which is suitable for the technical field of manufacturing linerboard in the papermaking industry. Background technique [0002] Container board, also known as kraft paper and kraft cardboard, is one of the main paper types for carton paper. It is bonded with corrugated paper cores to make corrugated cartons. Therefore, the requirements for cardboard paper are that they should have certain compressive strength, toughness, tear resistance, flat paper surface, and no lumps, knots and unevenness. The appearance of paper defects, in addition to having a high water resistance. However, the existing domestic containerboard paper not only has poor bonding strength, but also has many composite layers, complicated process, low production efficiency and high cost. Contents of the invention [0003] The purpose of the present invention is to provide a producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F11/00D21H11/14D21H17/66D21C5/02D21D5/02
CPCD21C5/02D21D5/02D21F11/00D21H11/14Y02W30/64
Inventor 王贵敏周志强陈光军卢奇遇
Owner LIANSHENG PAPER IND LONGHAI