Thermoforming

thermoforming of packaging sealing plate with ruby red teflon

Thermoforming

Thermoforming is the process by which a piece with a certain shape is obtained. It starts with a sheet or plate of semi-finished thermoplastic which, by applying heat and using a vacuum with a mould or die, softens, and adapts to the shape of the mould. The heat applied must be the correct one (between 120 and 180 ºC). The same happens with the vacuum pressure, which varies between 600 and 760 mmHg. A bad adjustment of these parameters will result in a defective part. Mechanical pressing can also be done with a counter-mould.

Materials used in thermoforming

  • PAI: high impact polystyrene
  • PP: propylene
  • PET: Polyethylene Terephthalate
  • ABS: acrylonitrile butadiene styrene
  • HDPE: high density polyethylene
  • PVC: Polyvinyl chloride
  • Foamed PVC
  • Polycarbonate PVC
  • Acrylic PVC

Stages of thermoforming

  • Heating of the semi-finished product
  • Moulding of the semi-finished product
  • Product cooling
thermoforming of heat sealing mold for packaging with green teflon
thermoforming heat seal plate ptfe
thermoforming container sealer mold
thermoforming of thermal welder with green teflon coating