Pressure Forming is a plastic processing method in which air is blown into the softened material for it to be co converted into a three-dimensional shape. The material is reel fed under a multi-zone heater into the forming tool where it is formed and trimmed (usually in-situ). The finished products are cleared from the tool by air-blast, and the skeletal waste wound onto a rewind unit. All these operations are automatic. Suitable products can be automatically stacked.

The main advantages of pressure forming are improved part detail and surface finish; in mould texturing and more consistent repeatability.