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Papermaking coating and preparation method thereof

A coating and raw material technology, which is applied in the field of high-strength coatings and preparations for papermaking, can solve the problems of paper lint and powder loss, easy occurrence of paper, lint and powder loss, etc., and achieve increased glass transition temperature, increased strength, and stable coating performance Effect

Pending Publication Date: 2021-07-27
DONGGUAN NINE DRAGONS PAPER IND
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Problems solved by technology

Since most of the current paper-making coatings use starch as the main raw material, the final prepared paper is prone to quality problems such as paper, lint and dust, and powder bursting, and these quality problems have a great relationship with the strength of the coating on the paper. Only by improving the strength of the coating can the quality problems of paper shedding, dusting and dusting be solved

Method used

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  • Papermaking coating and preparation method thereof
  • Papermaking coating and preparation method thereof
  • Papermaking coating and preparation method thereof

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with specific examples.

[0014] The present invention is a kind of paint for papermaking, the composition raw material of this paint and the ratio of parts by weight of raw materials are:

[0015]

[0016] Described calcium carbonate is heavy calcium carbonate, and it is used as the main filler in coating.

[0017] The china clay is calcined china clay, and the present invention does not use starch, but calcined china clay, which can further increase the drying temperature after coating.

[0018] The latex is styrene-butadiene latex, the main component of which is styrene-butadiene. Since the styrene-butadiene latex has high strength and does not form precipitation, the strength of the coating can be improved. At the same time, styrene-butadiene latex is suitable for an environment with a pH of 6-10, and its chemical properties are stable. The pH of the paint can be properly adjusted by caustic s...

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Abstract

The invention relates to the technical field of paper production processes, in particular to a high-strength coating for papermaking and a preparation method of the coating. The coating comprises the following raw materials in parts by weight: 88-92 parts of calcium carbonate; 9-11 parts of porcelain clay; 9-11 parts of latex; 0.16 to 0.20 part of a thickening agent; 0.05 to 0.07 part of a dispersant; 0.10 to 0.12 part of a defoaming agent; wherein the calcium carbonate is heavy calcium carbonate, the porcelain clay is calcined porcelain clay, and the latex is styrene-butadiene latex. The glass transition temperature of the latex is increased by changing the types of the latex and the defoaming agent, and the preparation time is prolonged by properly reducing the temperature in the preparation process, so that the performance of the latex is higher, and meanwhile, the drying temperature can be increased to 170 DEG C in the paper drying process after coating, so that the coating performance is stabilized, and the coating strength is increased; and therefore, the quality problems of linting, dusting and powder explosion of the paper are solved.

Description

Technical field: [0001] The invention relates to the technical field of paper production technology, in particular to a high-strength coating for papermaking and a preparation method thereof. Background technique: [0002] In the papermaking process, the base paper of the paper needs to be coated with paint, and then dried to obtain the final usable printing paper. The current coatings for papermaking are mostly composed of starch, latex, pigments, and functional additives. When in use, the paint is coated on the surface of the base paper by a coater. Since most of the current paper-making coatings use starch as the main raw material, the final prepared paper is prone to quality problems such as paper, lint and dust, and powder bursting, and these quality problems have a great relationship with the strength of the coating on the paper. Only by improving the strength of the coating can the quality problems of paper shedding, dusting and dusting be solved. Therefore, the in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/38D21H19/40D21H19/58D21H19/44D21H19/64D21H21/36D21H21/28
CPCD21H19/385D21H19/40D21H19/58D21H19/44D21H19/64D21H21/36D21H21/28
Inventor 刘名中张益安谢昌武彭志岗
Owner DONGGUAN NINE DRAGONS PAPER IND
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