DIAPHRAGM FORMING

Diaphragm forming uses sheets of reuseable silicone as a carrier for COMFIL® fabrics between a hot platen section and a forming section. The process transforms COMFIL® fabrics into parts with very low air pressure. The one side tooling remains cold, and is therefore extremely inexpensive.

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* Drawing by courtesy of Twintex®

Key Processing Points:

  • Insert COMFIL® fabrics between two silicone sheets.
  • Place the silicone/COMFIL® sandwich in the hot platen equipment until it reaches a temperature of app. 35-50 °C over the melting temperature of the matrix material).
  • Transfer the forming unit and apply positive air pressure (30 psi).
  • Demould when the part and silicone are below 50-100°C.
  • Remove silicone membranes from the part for reuse

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