... machinery screwbarrel/screwbarrel for blowing bottle/single screw and barrel for PET bottlemachine ... and plastic products to design different screw structure ,compress rate and L/D! According to different material and ... :≤Two classMaterial Application1)General Plastics2)ABS,PA,PC,PE,PET,PP, ... design, heat emission area is enlarged, the cooling is rapid.4, The double screw extruder system can produce ...