What are the three elements of heat transfer printing?

author: Uvink

2023-01-02

The three elements are the problems that new customers often encounter. The three elements we

often refer to are temperature, time and pressure when transferring. Under the condition of controlling

temperature, time and pressure during embossing, the effect of heat transfer hot stamping can be vivid,

with fine and accurate patterns and bright colors.

Temperature and temperature are important parameters for heat transfer printing and hot stamping.

The higher the temperature is, the higher the transfer rate will be. Because the temperature has a direct

impact on the fabric, the transfer temperature should be determined above the fabric temperature, that is,

the fabric temperature is the lowest temperature during heat transfer hot stamping processing, and the

fabric begins to sublimate when this temperature is reached. But it is not the highest temperature of fabric

sublimation, and the highest temperature should be determined by the fact that the fiber is not damaged.

Therefore, the optimum temperature should be selected based on factors such as fiber and dye. Generally,

150~160 ℃ is preferred.What are the three elements of heat transfer printing?

Time, transfer time: The heat transfer hot stamping time is usually controlled at about 12 seconds. There are

two transfer time: one is the sublimation time of dye; One is the time when the dye sets on the surface. Disperse

dyes of different colors have different diffusion coefficients, and proper extension of heating time will increase

the color depth of dyes, but excessive extension of transfer time has no practical significance. On the contrary,

it will delay the production efficiency and cause the decline of the quality of the carrier, because too high temperature

and too long time will cause the fiber to feel rough and the color to turn yellow; On the contrary, if the temperature

is too low and the time is too short, the transfer effect is not ideal.

Pressure, transfer pressure: pressure is an important factor to ensure the transfer quality. The greater the pressure,

the better the transfer effect. It mainly reduces the distance between the fabric and the transfer film. The less the

vaporized disperse dyes collide and escape in the air, and the higher the color of heat transfer hot stamping.

But the pressure should not increase indefinitely. The excessive pressure will cause obvious indentation between

the pressure area and the non pressure area of the fabric. In order to ensure the appearance quality of the bearing

fabric, the hot stamping machine with circular contact surface can be used. Another method is to use a decompression

type hot stamping machine - the so-called vacuum heat transfer hot stamping with air extraction. The decompression

heat transfer hot stamping can also make a part of the disperse dyeing without sublimation applied, and can also

increase the color yield and heat transfer hot stamping speed.

When choosing heat transfer materials such as engraving film or hot stamping, you should understand the

temperature, time and pressure of these materials. Whether it is suitable for the ironed object.