... -automatic plastic vacuum forming machine *AutomaticVacuumMachine *Vacuum Acrylic,ps,plastic *make light box ,LED letter semi-automatic plastic vacuum forming machine 1 ... the acrylic plate on top of the machine the mold, heating, softening, plastic, cooling, an automatic shape.B. Automatic ... softening acrylic sheet & compress & sucking by vacuum & blowing, so to make any shapes of acrylic workpieces.4. ...