The basic principle of hollow blow molding, the constitution of control system and the construction of intermittent parison thickness controller are described, and the series communication program flow charts between master and slave are presented.

• 介绍了中空吹塑成型的基本原理、控制系统构成、间隙式型坯壁厚控制器结构，并给出了上下位机串行通讯程序流程；