Thermoforming process for thermoplastic or cold stretchable design and/or cover plastic films uses a filler body with rear recess for a spring disc of smaller size

摘要

Filler bodies(2) are attached to the film(1) at points to be thermoformed. Their outer shape(4) is approximately similar to and/or identical to the shape of the thermoforming cavities and body thickness is greater than cavity depth. Filler bodies are aligned with the forming cavities. Each filler body has a contact cap on the underside(5) with a recess(6) in the shape of a spring disc(8) and/or chamber for LEDs (light emitting diodes). Filler bodies(2) are attached to the film(1) at points to be thermoformed. Their outer shape(4) is approximately similar to and/or identical to the shape of the thermoforming cavities and body thickness is greater than cavity depth. Filler bodies are aligned with the forming cavities. Each filler body has a contact cap on the underside(5) with a recess(6) in the shape of a spring disc(8) and/or chamber for LEDs (light emitting diodes). Recesses are larger than the spring disc and depth is similar to disc depth when pressed flat. When a film covers the front of a filler body the latter stops disc movement and prevents the latter pushing through the film. The contact caps form vertical guides for the filler bodies(2) which are firmly bonded to the film. Filler bodies are produced as injection moldings and/or as plate material.