Water-resistant and moisture-proof method for corrugated base paper

A corrugated base paper and pulp technology, applied in the field of papermaking, can solve problems such as waste, affecting papermaking costs, and increasing the sewage treatment load of paper mills

Active Publication Date: 2020-08-21
DONGGUAN NINE DRAGONS PAPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, rosin size, AKD pulp sizing agent and alkenyl succinic anhydride (abbreviated as ASA) pulp sizing agent ASA etc. all have low retention defects. Improvement, a large amount of sizing chemicals in the pulp will also be lost with the water in the pulp
The lost part of the internal pulp sizing chemicals not only causes ...

Method used

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  • Water-resistant and moisture-proof method for corrugated base paper
  • Water-resistant and moisture-proof method for corrugated base paper

Examples

Experimental program
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Embodiment 1

[0024] A water-proof and moisture-proof method for corrugated base paper in this embodiment comprises the following steps:

[0025] Step 1: Prepare pulp with 100% domestic waste as raw material, and then use breast rolls with stable frequency and amplitude in the dehydration stage of the wire section to distribute the paper fibers in the pulp evenly on the wire of the wire section, and complete the pulp The first uniformity improvement treatment, and then use the adjustable angle or height of the wiper, by adjusting the height or angle of the wiper, to ensure that the slurry in the wire part jumps in the forming stage, that is, to complete the first stage of the pulp. Secondary formation improvement treatment to obtain corrugated base paper with a grammage of 80-120gsm after the second formation improvement treatment.

[0026] Step 2: See figure 1 , the starch with a concentration of 20-22% is gelatinized by biological amylase to obtain gelatinized starch, and then gelatinize...

Embodiment 2

[0031] A kind of corrugated base paper water-proof and moisture-proof method of this implementation is basically the same as embodiment 1, and its difference is:

[0032] In step 2, the amount of gelatinized starch is 58kg / ton of paper, defoamer is 0.04kg / ton of paper, aluminum sulfate is 1.3kg / ton of paper, SAE surface sizing agent is 3.8kg / ton of paper and AKD surface sizing agent It is 2.4kg / ton of paper.

[0033] In step 3, the dryness of the corrugated base paper entering the sizing machine is 88%, and the sizing temperature is 90°C.

Embodiment 3

[0035] A kind of corrugated base paper water-proof and moisture-proof method of this implementation is basically the same as embodiment 1, and its difference is:

[0036] In step 2, gelatinized starch is 35kg / ton of paper, defoamer is 0.06kg / ton of paper, aluminum sulfate is 1.6kg / ton of paper, SAE surface sizing agent is 4.5kg / ton of paper and AKD surface sizing agent is 3.2kg / ton of paper.

[0037] In step 3, the dryness of the corrugated base paper entering the sizing machine is 90%, and the sizing temperature is 110°C.

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Abstract

The invention provides a water-resistant and moisture-proof method for corrugated base paper. The method comprises the following steps: 100% local waste serves as a raw material and is used to preparepaper pulp, the uniformity of the paper pulp is improved in the dehydration stage and the forming stage of a net part, and corrugated base paper subjected to uniformity treatment is obtained; starchis gelatinized by using biological amylase to obtain gelatinized starch, the gelatinized starch, aluminum sulfate and a defoaming agent are pumped into a surface sizing working tank and are mixed, anSAE surface sizing agent is pumped into the surface sizing working tank and is mixed to obtain a mixture, and the mixture and an AKD surface sizing agent are conveyed into a sizing machine through a conveying pump to obtain a sizing material for surface sizing; and surface sizing treatment is carried out on corrugated base paper at a certain temperature by using the sizing material on a sizing machine to obtain the finished product. The retention rate of the sizing agent can be increased, the loss of the sizing agent is greatly reduced, the cost is reduced, and the water resistance and moisture resistance of the corrugated base paper can be improved.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a water-proof and moisture-proof method for corrugated base paper. Background technique [0002] Corrugated base paper is one of the important components for the production of corrugated base paperboard. Corrugated base paper requires smooth paper surface, good bonding strength with fibers, good tightness and stiffness, and certain elasticity to ensure The finished cartons are shockproof and pressure-resistant; in particular, corrugated base paper also has high requirements for water resistance and moisture resistance according to its actual use. The traditional method is to add rosin size, alkyl ketene dimer (abbreviated as AKD) pulp sizing agent and alkenyl succinic anhydride (abbreviated as ASA) pulp internal sizing agent to form hydrophobic groups on the surface of paper fibers. At the same time, the surface sizing of starch glue is carried out in the latter part of the ...

Claims

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Application Information

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IPC IPC(8): D21F11/12D21H23/52D21H21/16
CPCD21F11/12D21H23/52D21H21/16Y02W30/64
Inventor 张成飞张益安宋林林刘永张修伟刘祥星
Owner DONGGUAN NINE DRAGONS PAPER IND
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