SPRING LOADED SELF-ADJUSTING MELT CUTTER

摘要

An improved rotary melt cutter (17) capable of accomodating a wide variation in polymer melt viscosities and melt characteristics is provided by use of a controlled pressure spring mechanism (25) which operates in conjunction with each of several independently articulated knife-assemblies (19) of the cutter (17). The knife-blade (10) cutting-edges (11) thereby maintain nearzero clearance from an extruder die-face (13) from which polymer strands are being extruded. The cutter (17) operates more effectively with less interruption and fouling than cutters of similar design but which utilize hydraulic pressure as the means of maintaining near-zero clearance.