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Hot stamping was created in 1892 by Ernest Oeser. It is a technique based on the combined use of heat and pressure, and has a considerable advantage: enables not to use ink in the stamping procedure, replacing it with the film, a thin plastic pellicle composed by 4 layers (see image):

  • A polyester bearing layer (thickness of 12-50 microns);
  • A release layer (carried out with special waxes);
  • A layer coloured with pigments or metallic substances;
  • An adhesive layer, specifically designed for any kind of materials to be stamped (plastic, paper, metal...).

The film is placed between a surface heated at 100 - 170°C (processed block) and the component on which the decoration will be printed.

Then the hot processed block comes into contact with the film and compresses it on the surface of the component to be stamped, then the wax release layer melts down, the coloured patina transfers from the bearing layer and goes onto the underlying materials, being glued through the adhesive layer.
The transfer of the patina occurs only when the processing block directly touches the film. As a consequence, through this technique it is possible also to make sophisticated drawings, logos and inscriptions, engraving the processing block in such a way to leave only the decoration embossed.
The use of the film to replace the ink enables to manage the components immediately after the stamping, without the risk of imperfections. This way it is possible to save much time.

 

 

 

 

 


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