The adjusting of temperature, pressure, the speed of screw rotation and other process factors in the course of debugging of extrusion dies for rigid PVC profiles and the effects of process conditions on the debugging of extrusion dies are discussed. Based on those discussion, a general principle for amending extrusion dies is introduced.%讨论了PVC-U塑料异型材挤出模调试过程中温度、压力、螺杆转速等工艺因素的调节，以及生产工艺等对挤出模调试的影响。并介绍了挤出模修整的一般原则。
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