The plastification quality of PVC profiles is discussed from such two aspects as the extrusion process and the assembling precision of the extrusion cylinders and screws.

• 从挤出机的挤出工艺和机筒、螺杆装配精度两方面讨论了与PVC异型材塑化质量的关系,提出了调整、改善塑化质量的方法。