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Preparation method for coated paper coating material and coated paper

A technology for coated paper and coatings, applied in the field of papermaking, can solve the problems affecting the quality of finished coatings and the quality of raw materials, and achieve the effect of avoiding deterioration problems.

Active Publication Date: 2017-02-15
GOLD EAST PAPER JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention mainly solves the technical problem that the quality of the raw material is reduced due to the excessive microbial content of the raw material of the paint, thereby finally affecting the quality of the finished paint

Method used

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  • Preparation method for coated paper coating material and coated paper
  • Preparation method for coated paper coating material and coated paper
  • Preparation method for coated paper coating material and coated paper

Examples

Experimental program
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preparation example Construction

[0018] see figure 1 , figure 1 It is a flow chart of a method for preparing a coated paper coating provided in an embodiment of the present invention, and the method for preparing a coated paper coating in this embodiment includes the following steps:

[0019] S101: Treat the pigment with a long-acting antiseptic fungicide;

[0020] In an embodiment of the present invention, the pigment includes a combination of one or more of precipitated calcium carbonate, ground calcium carbonate and kaolin.

[0021] Typically, the microbial content of untreated pigments reaches 10 5 CFU / ml or even 10 6 Above CFU / ml, the microbial content in the pigment is high, which will have a great negative impact on its quality, such as the viscosity of the pigment paste will increase, the pH will decrease, the growth of anaerobic microorganisms will cause brightness reduction, and hydrogen sulfide odor will be generated. In the embodiment of the present invention, the pigment is treated with a lon...

Embodiment 1

[0041] The number of microorganisms added to the pigments with different amounts of fungicides at different times was detected. In this embodiment, the pigments were ground calcium carbonate, and the fungicides were 5-chloro-2-methyl-4-isothiazolin-3-one and 2 - A 1:1 mixture of methyl-4-isothiazolin-3-one, the amount of fungicide added is relative to the absolute dry weight of the pigment, and the specific test results are shown in Table 1 below:

[0042] Table 1: Microbial content of pigments treated with different amounts of fungicides at different times

[0043]

[0044] It can be seen from the above table that by adding a certain amount of bactericide to treat the pigment, the number of microorganisms in the pigment can be kept in a low range for a long time. Therefore, it can effectively avoid the deterioration caused by too many microorganisms of the pigment raw material (such as pH decrease, viscosity increase, hydrogen sulfide smell, etc.).

Embodiment 2

[0046] In this embodiment, the coating formula includes pigment (ground calcium carbonate), adhesive (styrene-butadiene latex) and additives, wherein the additive includes dispersant (sodium polyacrylate), defoamer (tributyl phosphate), lubricant (hard Calcium ester) and water-resistant agent (melamine formaldehyde resin), fungicide using 5 chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one 1:1 mixture, the addition amount of bactericide is the addition amount (unit: ppm) relative to the absolute dry mass of pigment, adhesive and coating, and the coating is prepared by different processing methods of the present invention, and the prepared coating is mixed with The microbial quantity of the coating prepared by the method of the prior art (that is, the method of directly utilizing the bactericide to process the final coating) is tested, and the test results are as follows in Table 2:

[0047]

[0048] From the above test results, it can be known that the ...

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Abstract

The invention discloses a preparation method for a coated paper coating material and coated paper. The preparation method for the coated paper coating material comprises the steps of carrying out treatment on pigments by using a long-acting anticorrosive fungicide, and mixing the treated pigments with a tackifier and additives, thereby obtaining the coated paper coating material. The pigment content accounts for 80% to 90% or more the total weight of the coating material formula, the pigments are treated through the fungicide so as to lower the microbe content of the pigments, and thus the problem of deterioration caused by too high microbe content of raw materials can be effectively avoided; and the microbe content of the final coating material can be effectively controlled on the basis of reducing the use level of the fungicide for treating the coating material.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a method for preparing coated paper coating and coated paper. Background technique [0002] The composition of coated paper coating mainly includes pigments, adhesives and other additives. According to literature reports and combined with the current situation of the factory, it is usually necessary to treat the coated paper coating to control the microbial content of the coating within the control range. Usually, the bactericide is added to the high-speed disperser of the paint configuration equipment to control the microbial content of the finished paint within 10 5 Below CFU / ml (using 3MPetuifilm bacterial test piece method). [0003] However, in the existing treatment method, on the one hand, the amount of bactericide is relatively large; on the other hand, it is unavoidable to reduce the quality of the raw material caused by the excessive microbial content of the raw material of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/36D21H19/38D21H19/58D21H21/06D21H21/12
Inventor 杨露王炜於旺盛
Owner GOLD EAST PAPER JIANGSU
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