What is laser thermal transfer film?

1-What is laser thermal transfer film
What is laser thermal transfer film?

Laser thermal transfer film is a special process film that adds laser effect on the basis of aluminum-plated thermal transfer to make the surface pattern of the product more dazzling.

2-Laser thermal transfer film printing steps
The laser thermal transfer film printing steps are the same as general thermal transfer films, and also need to go through the following 6 processes:

1. Laser thermal transfer film printing and coating release agent process;

2. Laser thermal transfer film pattern printing process;

3. Laser thermal transfer film printing and coating glue process;

4. Laser thermal transfer film printing re-inspection process to ensure quality;

5. Laser thermal transfer film printing striping process;

6. Laser thermal transfer film printing packaging process

3-Key points of laser thermal transfer film printing
Key point 1 of laser thermal transfer film printing - temperature

During the process of laser thermal transfer film printing, when the coated film enters the first plate roller for the first lamination, the temperature set at the working area at both ends of the plate seam is low, so after the transfer lamination, the plate seam is not obvious or basically invisible; while the temperature of the large area laser pattern part is high, so it can be transferred normally.

Key point 2 of laser thermal transfer film printing - plate seam

Staggering the plate seam position (even if the relative position of the plate seams on the two molded plates is staggered) is another key point of laser thermal transfer film printing.

The specific implementation method is to make the two plate rollers on the laser thermal transfer film laminating machine perform speed and frequency conversion separately, and then use the floating roller to link with the two plate rollers, so that any plate roller can adjust the rotation angle 360° at will to ensure that the plate seams of the first molded plate and the second molded plate never overlap during operation.

Key point three of laser thermal transfer film printing - pressure

During the lamination process of laser thermal transfer film printing, the greater the pressure of the pressure roller, the clearer the laser image and the higher the brightness; conversely, if the pressure of the pressure roller is small, the laser pattern will appear hairy, not clear and bright enough.

Key point four of laser thermal transfer film printing - tension

Tension control is not only related to the quality of the laser effect of laser thermal transfer film printing, but also may cause wrinkles and other problems if it is not properly controlled.

In order to allow the laser thermal transfer film to enter the plate roller stably and evenly, the double-plate double-pressing method generally uses a floating roller and adopts a "triangle tensioning" method to control the tension, which can not only accurately control the tension of the film when it enters the plate roller, but also fine-tune the film to the best lamination position.