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High-gloss thermo-sensitive paper and production method thereof

A production method and technology for thermal paper, applied in the directions of paper, papermaking, paper coating, etc., can solve the problems of inability to apply large-scale, increase the production cost of thermal paper, reduce color development performance, etc., and achieve excellent image display performance , the effect of high smoothness, high gloss and surface strength

Inactive Publication Date: 2013-05-01
HUNAN HENGHAN HIGH TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Resin coating is mainly to use the excellent film-forming properties of resin to form a uniform resin film on the surface of thermal paper, thereby improving the gloss of thermal paper, but obtaining thermal paper in this way will reduce its color development performance. At the same time, because of the high cost of resin, this will inevitably increase the production cost of thermal paper, and its high cost determines that this type of thermal paper can only be used in specific fields, and cannot be used on a large scale
In summary, none of the above four methods for improving the glossiness of paper is suitable for producing low-cost high-gloss thermal paper

Method used

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  • High-gloss thermo-sensitive paper and production method thereof

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preparation example Construction

[0022] The preparation method of thermal paper 110 of the present invention, its steps are as follows:

[0023] (1) An initial base paper 100 is provided, which is preferably made from whole wood pulp and mixed pulp. The water absorption value of base paper is less than 50g / ㎡, and the smoothness is greater than 30s.

[0024] (2) Preparation of pre-coating paint

[0025] Using calcined china clay, calcium carbonate, adhesive, dispersant, lubricant, water repellant, thickener and water, mix 80~100 parts of calcined china clay, 20~0 parts of calcium carbonate, 8-15 1 part of adhesive, 0.2~0.6 part of dispersant, 1~2 part of lubricant, 0.5~1.0 part of water repellent, 0.5~1.5 part of thickener and water are mixed to prepare a precoat with a solid content of 45%~55%. The coating, wherein the mass ratio of the total mass of calcined china clay and calcium carbonate to the adhesive is 100:10~20.

[0026] Described calcium carbonate is more than one in light calcium carbonate, hea...

example 1

[0054] The base paper 100 adopts all-wood short-fiber heat-sensitive base paper (basis basis: 58.0 g / ㎡, smoothness: 70s, surface water absorption Cobb at 60s: 51.8 g / ㎡, ash content: 21%).

[0055] Pre-coating paint: 100 parts of calcined china clay, 15 parts of adhesive, 0.6 parts of dispersant, 2 parts of lubricant, 1 part of water-resistant agent, and 1.5 parts of thickener. The adhesive is styrene-butadiene latex. The dispersant is sodium polyacrylate. Described lubricant is calcium stearate. The water resistant agent is polyamide polyurea resin. The thickener is sodium carboxymethylcellulose.

[0056]

[0057] The pre-coating paint is applied on the surface of the base paper 100 by doctor blade to form a pre-coating layer, and the coating amount is 8.5g / ㎡.

[0058] Chromogenic layer paint: 9 parts of chromogenic agent, 25 parts of color developer, 26 parts of sensitizer, 5 parts of grinding aid, 10 parts of lubricant, 6 parts of adhesive, 20 parts of calcined china cl...

example 2

[0062] The base paper 100 uses mixed wood pulp short fiber thermal base paper. (Basic quantity: 60.0 g / ㎡, smoothness: 48s, surface water absorption Cobb at 60s: 23.1 g / ㎡, ash content: 25%)

[0063] Pre-coating paint: 90 parts of calcined china clay, 10 parts of calcium carbonate, 12 parts of adhesive, 0.5 parts of dispersant, 1.5 parts of lubricant, 0.8 part of water-resistant agent, and 1.0 part of thickener. Described calcium carbonate is heavy calcium carbonate. The adhesive is styrene-butadiene latex and starch, wherein 9 parts of styrene-butadiene latex and 3 parts of starch. The dispersant is sodium polycarboxylate. Described lubricant is calcium stearate. The water resistant agent is potassium zirconium carbonate. The thickener is polyacrylic acid.

[0064] The pre-coating paint is applied on the surface of the base paper 100 by doctor blade to form a pre-coating layer, and the coating amount is 9.0 g / ㎡.

[0065] Chromogenic layer paint: 9 parts of chromogenic age...

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Abstract

The invention discloses a high-gloss thermo-sensitive paper and a production method thereof. The production method comprises the following steps of coating precoating paint on a body paper to obtain a precoated paper, compounding the precoated paper and a sheet material coated with color layer paint, drying, and separating the sheet material to obtain the high-gloss thermo-sensitive paper. The production method avoids a press polishing process. The high-gloss thermo-sensitive paper has a gloss degree higher than 40%. The precoating comprises molochite, calcium carbonate, an adhesive, a dispersing agent, a lubricant, a water repellent agent and a thickener. The color layer comprises a color agent, a color-developing agent, a sensitizer, a grinding assistant, a lubricant, an adhesive, molochite, calcium carbonate and a stabilizer. The high-gloss thermo-sensitive paper retains color-developing performances and aging resistance of the traditional thermo-sensitive paper, has excellent appearance and surface strength, a paper gloss degree more than 40% (at a temperature of 75 DEG C, GB / T8941-2007), and has high smoothness without press polishing and satisfactory thickness.

Description

technical field [0001] The invention belongs to the technical field of heat-sensitive paper, in particular to a method for manufacturing high-gloss heat-sensitive paper. technical background [0002] With the rapid development of social economy and science and technology, thermal paper has increasingly shown a wide range of uses and an important market position due to its excellent performance. It is necessary to continuously develop new varieties to meet the needs of different application fields and expand the thermal paper. Consumption. At the same time, the rapid rise of various emerging industries provides more new opportunities for the application of thermal paper. The production of thermal paper in my country started late, and the current scale is relatively small. Many application fields have not yet been developed. It is necessary to actively promote the development of thermal paper, so that thermal paper develops in the direction of high performance, low cost, env...

Claims

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Application Information

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IPC IPC(8): D21H19/82D21H19/40D21H19/38D21H19/44D21H19/60D21H21/08D21H21/06D21H21/30D21H21/14
Inventor 喻建军方志强陈港
Owner HUNAN HENGHAN HIGH TECH CO LTD
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