Scratch-resistant thermal-sensitive paper manufacturing method

A manufacturing method and technology of thermal paper, applied in papermaking, paper coating, textiles and papermaking, etc., can solve the problems of poor impact resistance, no softness and elasticity, poor scratch resistance of paper, etc., and achieve excellent scratch resistance Effect

Active Publication Date: 2015-08-19
JIANGSU WANBAO RUIDA HI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the particle size of each component used in the top coating is small (generally no more than 2um), in order to obtain good paper smoothness, the production process must go through a calendering process, and the final top coating thickness becomes thinner, and most of them are inorganic pigments , no soft elasticity, poor impact resistance, so the paper has poor scratch resistance

Method used

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  • Scratch-resistant thermal-sensitive paper manufacturing method

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Embodiment Construction

[0056] A method for manufacturing scratch-resistant thermal paper includes the following steps:

[0057] a) Preparation of pre-coating coating liquid:

[0058] Add water to the pre-coated batching tank, open the batching tank and stir, add calcined kaolin with a particle size of 2um, with an oil absorption value of 40~55, add inorganic pigment dispersant, and carry out high-speed dispersion for 40~60 minutes, and the dispersion speed is 1000~1200 revolutions / Then disperse slowly at a speed of 200~300 rpm, then add high hollow fillers (such as plastic pigments), then add adhesive and water-retaining agent in sequence, and disperse for 20 minutes to form a solid content of 40 %~60% pre-coating coating liquid;

[0059] The parts by weight of the calcined kaolin, inorganic pigment dispersant, adhesive, water retention agent and high hollow filler are:

[0060] Calcined kaolin 60~70 parts

[0061] Dispersant 0.5~1 part

[0062] Adhesive 8~12 parts

[0063] Water retaining agent 0.5~1 part

...

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Abstract

The present invention discloses a scratch-resistant thermal-sensitive paper manufacturing method, which comprises: a) preparing a pre-coating layer coating liquid: b) preparing an agent A; c) preparing an agent B; d) preparing an agent C; e) preparing an agent D; f) preparing a thermal-sensitive color generating layer coating liquid; g) preparing a top coating layer coating liquid; and h) coating. According to the present invention, the polyolefin dispersion with characteristics of excellent flexibility and excellent impact resistance is developed and utilized in the top coating layer so as to obtain the excellent scratch resistance; the multiple core-shell structure self-crosslinked acrylate and methacrylate copolymer ultrafine dispersions are developed and utilized in the top coating layer formula, such that the excellent wet friction resistance can be obtained after the coating layer is dried; and with the optimization, the colorless dye, the coloring agent and the sensitizer used by the color generating layer are selected to match and are subjected to optimization with the optimal ratio, such that the paper achieves good coloring performance, good storage performance, and a certain protection performance.

Description

Technical field [0001] The invention relates to the field of papermaking, in particular to a method for manufacturing scratch-resistant thermal paper. Background technique [0002] The existing three-proof thermal paper on the market is basically a product with a top coating. Generally, emphasis is placed on the thermal printing performance, storage performance and performance of paper, such as water resistance, oil, ethanol, and plasticization. The performance of the paper in terms of scratch resistance and wet friction resistance is average. Thermal paper used for labels, especially thermal paper labels for logistics, is unavoidable from friction and collision or even strong scratches in the logistics and distribution process. The poor scratch resistance and friction properties of the paper will easily lead to the distribution of the label printing. The information cannot be identified, which affects normal logistics and distribution. The three-proof thermal paper produced b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/40D21H19/44D21H19/38D21H21/14
Inventor 钟亚伍
Owner JIANGSU WANBAO RUIDA HI TECH CO LTD
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