... hole in extruder,high technology,low price twin screw extruder PET sheet line, twin screw extruder PET sheet line, low consumption, ... ensure water and humid air come out .D. Melting pump is used to control extruding capacity, full closed circulation ... Designing on the basis of Germany technology standard of twin screw extruder.F. main dataitemunitdatamaterialPET,PETG,RPETSheet thicknessmm0.15~1 ...