Back-coating emulsion capable of preventing paper humectant from plugging board

A humectant and back-coating technology, which is applied in the direction of paper coating, papermaking, coating, etc., can solve problems such as blocking boards, affecting printing efficiency, and unfavorable printing, so as to improve production efficiency and paper qualification rate, ensure moisturizing effect, and improve performance effect

Inactive Publication Date: 2017-11-07
湖北绿新环保包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the paper processing factory produces paper, it is easy to cause the board blocking problem, which is very unfavorable to the subsequent printing, which will make it necessary to pay attention to the paper condition during the printing process and affect the printing efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of back-coated emulsion for preventing paper moisturizing agent from blocking, comprising water-based moisturizing agent, water, wet strength agent and anti-scaling agent, wherein, the mass fraction of water-based moisturizing agent is 22% to 26%, and the mass fraction of wet strength agent 0.18% to 0.3%, the mass fraction of the anti-scaling agent is 3.0% to 5.0%, and the rest is water.

[0020] In this embodiment, the water-based moisturizing agent is made of natural latex, deionized water, polyvinyl alcohol and antifoaming agent according to the mass fraction ratio of 25-30%: 65-70%: 3-6%: 2-7%. In this way, the wet strength agent is polyamine-polyamide, and the antifouling agent is polyacrylic acid PAA.

Embodiment 2

[0022] Carry out optimization on the basis of embodiment 1, obtain a kind of back coating emulsion that prevents paper humectant from blocking board, comprise water-based humectant, water, wet-strength agent and anti-scaling agent, wherein, the mass fraction of water-based humectant is 22 % to 26%, the mass fraction of the wet strength agent is 0.3%, the mass fraction of the anti-scaling agent is 5.0%, and the rest is water.

Embodiment 3

[0024] Carry out optimization on the basis of embodiment 1, obtain another kind of back coating emulsion that prevents paper humectant from blocking, comprise water-based humectant, water, wet strength agent and anti-scaling agent, wherein, the massfraction of water-based humectant is 22% to 26%, the mass fraction of wet strength agent is 0.18%, the mass fraction of anti-scaling agent is 3.0%, and the rest is water.

[0025] The above-mentioned back-coating emulsion back-coating process to prevent paper moisturizer from blocking the board, adjust the proportion of diluent added before the back-coated emulsion is used on the machine, reduce the printing viscosity of the back-coated emulsion, and mix the back-coated emulsion and the diluent at a ratio of 1:2.5 Uniform, fully stirred, filtered and then used on the machine. Before using the back coating liquid on the machine, ensure that its viscosity is within 20±3 seconds (coating 4 cups, 25°C). If the viscosity deviates, use cl...

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Abstract

The invention discloses a back-coating emulsion capable of preventing a paper humectant from plugging a board. The back-coating emulsion comprises the following components in percentage by mass: 22%-26% of a water-based humectant, 0.18%-0.3% of a wet strength agent, 3.0%-5.0% of an anti-scaling agent and the balance of water. By adding auxiliaries into the back-coating emulsion, the performance of the back-coating emulsion can be improved, and the back-coating emulsion can be used for printing under the condition of lower viscosity while improving the anti-scaling property of the back-coating emulsion; by regulating the proportion of a diluents added into the emulsion before the back-coating emulsion is used on a printer, the printing viscosity of the back-coating emulsion can be changed so as to reduce the coagulation probability of the back-coating emulsion during printing use; the clogging problem of the humectant due to back coating can be effectively solved, the moisturizing effect of the back coating procedure on paper can be guaranteed, and the production efficiency of a back coating procedure workshop and the pass percent of paper can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of paper printing and processing, in particular to a back-coated emulsion for preventing paper moisturizing agents from blocking boards. Background technique [0002] When the paper processing factory produces paper, it is easy to cause the board blocking problem, which is very unfavorable to the subsequent printing, which will make the printing process pay attention to the paper condition at all times, and affect the printing efficiency. Therefore, how to prevent this situation and further improve printing efficiency is a problem to be solved by those skilled in the art. [0003] Based on this, the present invention proposes a back-coated emulsion that prevents blocking of the paper moisturizer, improves the moisturizing effect, and improves the production efficiency and pass rate of the paper. Contents of the invention [0004] In order to solve the above-mentioned technical problems, the present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H19/20D21H19/24D21H21/20D21H21/14
CPCD21H19/14D21H19/20D21H19/24D21H21/14D21H21/20
Inventor 丁九斤孙洋孟繁全
Owner 湖北绿新环保包装科技有限公司
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