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Thermal Control During Thermal Transfer
- Dec 20, 2017 -

From the circuit theory, the thermal transfer device is a temperature controller and a time controller that together control an electrothermal device. The temperature and time can be set in advance. The temperature of the electrothermal device is stabilized at the set value, and the time will reach the design. After setting, the power is automatically disconnected. Of course, this heating element is based on the transfer of different products, and made cylindrical, square plane, round surface, circular surface and other shapes, in order to transfer different products.

The pressure applied by the thermal transfer heat roller to the surface of the thermal transfer film and the thermal transfer substrate should be moderately good. So how do you handle this moderate pressure? ! Long-term work in the production of the first line, there are rich production experience of the technical master that is on the machine to know, hot roller pressure is not enough big or small. This temperature control with the thermal transfer is a good idea - it is determined by the effect of the final transfer and the pressure is appropriate. First of all, after the thermal transfer printing, the ink is partially blocked or the transfer surface is not smooth. Generally, it can be judged that the heat roller pressure is not enough; on the contrary, after the transfer printing surface has ink on the transfer surface or the base film is difficult to fall off, it can be judged. Too much pressure. All of these are the most basic criteria for judging whether stress is appropriate.

When the heat transfer temperature is too low, hot stamping will not occur or the hot stamping will not be firm. It will also cause the blots to become bloated. When the temperature is too high, the surface of the color layer will be oxidized, the product will lose its luster, the color will darken, and serious problems will arise. bubble. To determine the optimum stamping temperature, consider the following factors: pressure, speed, area, room temperature, and so on. The hot stamping temperature is generally in the range of 140°C to 180°C. Once the optimum temperature is determined, it should be kept constant. The temperature difference should be fluctuating at ±2°C.