Vacuum forming is the simplest type of plastic thermoforming, that uses one mold and vacuum pressure to obtain the desired part geometry. ... In pressure forming, a heated sheet of plastic is pressed (hence the name) between two molds instead of being pulled into place around a single mold using suction.
What does a vacuum former make?
Vacuum forming, sometimes called vacuforming, is a simplified version of thermoforming, using moulds to create shapes in heated sheets of plastic.