Causes and solutions for hot stamping failure of thermal transfer printing film

1-Causes and solutions for hot stamping failure of thermal transfer printing film
Thermal transfer printing film will always encounter problems of one kind or another during processing. In summary, there will be three problems: the film is not properly sensed, the hot stamping pattern is incomplete, and the hot stamping pattern is wrinkled. Why do these three situations occur? How to deal with it?
Causes and solutions for hot stamping failure of thermal transfer printing film

2-Causes for hot transfer printing film not being properly sensed
1. The black color mark on the flower film is not aligned with the photoelectric eye

2. The color change is too light, causing the light belt eye to be unable to sense the flower film

3. The film collection speed is too fast, causing the color mark to quickly pass the photoelectric eye

3-Solutions
1. Adjust the position of the black color mark to align it with the photoelectric eye

2. Adjust the sensitivity of the photoelectric eye sensor

3. Slow down the film collection speed so that it can be sensed by the photoelectric eye

4-Reasons for the incompleteness of the thermal transfer pattern after hot stamping
1. Unstable air pressure leads to insufficient hot stamping time or slow flat push operation speed

2. When hot stamping curved surfaces, the film collection speed of the thermal transfer machine will slow down, causing the flower film to stick to the fixture and the pattern to appear incomplete

3. The product surface has dirt or oil, moisture, etc.

4. The distance between the limit sleeve and the forming switch is too close, causing the film rolling motor to run in advance, resulting in the front part not being printed.

5. The pressure is too small, so that the rolling fixture cannot rotate or the flat push slides slowly.

5-Solutions
1. Adjust the air pressure to make it stable, and then adjust the hot stamping time or speed up the flat push check valve.

2. Adjust the hot stamping speed and film rolling speed to coordinate them

3. Use a clean cloth to clean the stains on the product surface.

4. Adjust the distance between the limit sleeve and the travel switch so that the entire pattern can be printed completely

5. Adjust the fine-tuning nut on the cylinder to reduce the pressure.

6-Reasons for wrinkling of thermal transfer patterns after hot stamping

1. The temperature is too high, and wrinkles usually appear from the second pattern after hot stamping

2. The tension motor switch is not turned on or the spring pressure is too large or too small

3. During the hot stamping process, the film roller moves with the probe, resulting in the distance between the thermal transfer film and the rubber roller being too close

4. The printing speed and tension are not coordinated

7-Solutions

1. Lower the temperature to the appropriate hot stamping temperature

2. Turn on the tension motor switch or increase or reduce the pressure of the spring

3. Adjust the distance between the thermal transfer film and the rubber roller, which is recommended to be between 1 cm and 2 cm

4. Reduce the temperature or reduce the tension.