... line is composed by extruder, mould, vacuum, calibrator, haul off machine, cutter and stacker. It can produce different ... PMMA et cetera. 2. 3-Dimension adjustable vacuum calibrating unit, optimized vacuun swith, flow switch, multiple choice of dies ... fabricated, high quality material. 4. Dynamic balance type caterpillar haul-off, frequency conversion/AC speeding, stable running, convenient operation.5 ...