JUSTIFICATION OF THE MAIN PARAMETERS OF ROTARY VALVE OF THE EXTRUDER WITH A VACUUM CHAMBER

Abstract

The extrusion technology based on thermal effect, the dwell time of the extrudate in a vacuum chamber of the extruder in a certain range of technological tolerances can be taken as interchangeable for such process parameters as the machine’s performance and physico-mechanical properties of the processed material. One of the rational ways to control this time under the condition of equal volumetric flow rate of extrudate output from the die matrix and the floodgates of the machine is to periodically enable and disable the drive of the rotary valve of the extruder. This work suggests that the main parameters of the rotary shutter, which allows to realize this concept in the development of extrusion technology thermal-vacuum effect.