pressure thermoforming malawi,
Pressure forming is a more advanced form of vacuum forming. The mold creates the desired shape with the force of a vacuum on one side of the sheet and compressed air pressure on the other. Pressure forming can produce the fine detail that injection molding can, however it is done at a fraction of the cost.
In the HPF method, a printed film clamped inside a forming tool is shaped in the region of its softening temperature by the sudden application of heated compressed air at a pressure of 50 to 300 bar. This technique can be used to fabricate complex 3D geometries with our Makrofol® or Bayfol® films.
Pressure Forming. With pressure forming, a pressure box is added to the non-mold side of the sheet. The hot plastic sheet creates the seal between the pressure box and the mold. Air pressure up to 60 PSI is then added to the non-mold side of the sheet in addition to pulling the vacuum on the mold side.
Vacuum & Pressure Forming. Thermoforming can use one of two processes, Vacuum Forming or Pressure Forming. Each has its own advantages, and this table will help you decide which process might be right for you. DESCRIPTION A sheet of plastic material is heated to pliability, then pressed against a 3D mold by vacuuming out the air between the sheet,.
Pressure Thermoforming Pressure thermoforming can achieve the high quality, detailed look of injection molding with much less expensive tools. By using air pressures up to 100 PSI in addition to vacuum, textures, undercuts and other intricate details can be produced.