... + spring feeder + twin screw extruder + mould and calibrator + vacuum forming machine + haul-off machine + cutting machine + discharge rackTechnical data:itemPVC63PVC160PVC250PVC315PVC400PVC630Specification16-6375-160160-250250-315400 ... have conical twin-screw extruder, vacuum forming device, traction machine, cutting machine, stacker frame and so on, Extruder, vacuum shaped tank, and haul-off ...