The processing technology and coextrusiondie design of PVC foam core pipes are introduced. Also the selection of raw materials and design of formulation are discussed.
介绍了共挤出的PVC芯层发泡管的工艺流程和模头装置，并讨论了共挤管材的原材料选择及配方构成。
2
The die design of coextrusion and the essentials of die debugging for the soft and rigid PVC and introduced.
介绍软硬质聚氯乙烯共挤模具设计与调试的要点。
3
Coextrusion is a process that moulds the multilayer product in one die by two or more than two extruders.