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Main consumables of heat transfer film

Issuing time:2021-08-21 17:06

The main materials of heat transfer film can be divided into: heat transfer film base film, release agent, ink, adhesive and other main raw materials according to the structure of heat transfer film.

1. Adhesive

The adhesive for heat transfer printing is hot melt adhesive, which is colorless, transparent or light yellow viscous liquid. After drying, the film will be transparent. On the surface coated with release agent and ink, it has excellent composite fastness and excellent flexibility, strong abrasion resistance, strong resistance to water, acid and alkali and good abrasion resistance

Selected according to the manufacturer's requirements

2. Ink

The heat transfer ink belongs to gravure printing ink. The drying of the ink mainly depends on the volatilization of the solvent. After the base film is determined, select the appropriate ink according to the purpose of the print and the nature of the printing material or according to the requirements of the construction order. Check the fineness, viscosity, hue, adhesion and other indicators of the ink to see whether it meets the requirements of the printing quality for the ink

3. Release agent

Release agent is a kind of low viscosity transparent resin with release, film-forming and adhesion. Because the solvent in the release agent volatilizes rapidly, attention should be paid to controlling the viscosity in the transfer process, that is, controlling the solid content of the release agent, which is generally controlled at about 23%. If the solid content is lower than 19%, the transfer effect of the thermal transfer film after the release agent is not ideal. At the same time, attention should be paid to the transparency of the release agent, Otherwise, the effect of the printing layer will be affected

4. Substrate film

There are many carriers of heat transfer film, and pet is the most widely used. It has the characteristics of good dimensional stability, uniform tension, good heat-resistant effect and good release. In particular, it has obvious advantages in the reproduction of color tone originals. The specifications of the film, such as width, thickness, size and brand, are

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