关键词: 热切, 腔体塌陷, 聚酯胶板, 粗切, 刀体温度变化

Abstract: Experimental study of cavity collapse, bigger size and bad consistency. Experimental results show that the thermal release polyester panel can solve the cavity collapse. By analyzing the causes of the changing size, the irregular margin and the process of temperature change are the main reason. So control the process of the blade temperature change and add roughing step can meet the cutting precision.

Key words: thermal cutting, cavity collapse, polyester panel, roughing, blade temperature change