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A powder coating for thermal transfer printing

A technology of powder coating and heat transfer printing, applied in powder coating, polyester coating, coating, etc., can solve the problems of non-compliance with low-carbon environmental protection, multi-energy, consumption, etc., and achieve stable matte gloss, excellent mechanical properties, paper easy effect

Active Publication Date: 2020-02-18
GUANGZHOU KINTE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the higher curing temperature also consumes more energy, which does not meet the national low-carbon environmental protection requirements

Method used

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  • A powder coating for thermal transfer printing
  • A powder coating for thermal transfer printing
  • A powder coating for thermal transfer printing

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Experimental program
Comparison scheme
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Embodiment Construction

[0028] The present invention will be further described below in conjunction with a part of specific embodiments:

[0029] Table 1 shows five different examples A-E of high acid value resins in the present invention. The specific steps for the preparation of high acid value resins are as follows: raise the temperature of the reactor to 80°C, add polyols, branching agents, and polyacids in sequence under nitrogen protection Heat up to 180°C under low temperature, keep at 180°C for 1 hour, then heat up to 190°C, hold for 1 hour, heat up to 200°C, hold for 1.5 hours, heat up to 210°C, hold for 2 hours, heat up to 220°C, hold for 1 hour, heat up to 240°C, Keep warm for 3 hours. After the material is clear, test the acid value and viscosity. Among them, the acid value is 6-15mgKOH / g, and the viscosity is 600-2000mPa.s. After reaching the standard, cool down to 230°C. Among them, the acid value is 65-70mgKOH / g, the viscosity is 2000-3000mPa.s, after reaching the standard, vacuum oper...

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Abstract

The invention discloses a powder paint for thermal transfer printing. The curing temperature of the powder coating is 160-180DEG C, the curing time is 15-25min, the thermal transfer printing temperature is 180-210DEG C, and the thermal transfer printing time is 1-5min. The powder paint is prepared mainly by dry blending of high acid value powder paint and low acid value powder paint in a mass ratio of 0.8-1.2:1, wherein the high acid value powder paint is mainly composed of high acid value polyester resin, and the low acid value powder paint is mainly composed of low acid value polyester resin. The powder paint is made by dry blending extinction, has excellent extinction properties and low temperature curing properties, and is suitable for the thermal transfer printing field.

Description

technical field [0001] The invention belongs to the technical field of powder coatings, and in particular relates to a powder coating for thermal transfer printing. Background technique [0002] Powder coating is a new type of solvent-free 100% solid powder coating. Compared with conventional coatings, powder coatings have the advantages of no pollution, energy saving, high mechanical strength of the coating film, and full recovery of excess coatings, etc., and are in a stage of rapid development. With the increase of domestic environmental protection efforts, the market share of powder coatings will further increase. [0003] Thermal transfer printing is a process applied to the printing and decoration of ink patterns and patterns on the surface of materials. It has the characteristics of high efficiency, economy, stability and rich patterns. In recent years, the application of thermal transfer printing on powder coatings has developed rapidly, and has been widely used in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/02C09D5/03C09D7/61C09D7/63C08G63/20C08G63/183C08G63/78
CPCC08G63/183C08G63/20C08G63/78C08K13/02C08K2003/2241C08K2003/3045C09D5/033C09D167/02
Inventor 陈闯刘亮李勇谢静
Owner GUANGZHOU KINTE IND