EXTRUSION CONTROL METHOD OF BLOW MOLDING MACHINE

摘要

PROBLEM TO BE SOLVED: To discriminate a state that an extruder of a first resin is replaced with the purge resin by utilizing the difference of resin pressure data at the time of extrusion of the first resin and the purge resin in the extruder. SOLUTION: In this extrusion control method of a blow molding machine, the pressures at the time of operation using the first resin (9) and the purge resin (12) are set by sampling first resin pressure data (22a) and purge resin pressure data (22b) by a resin pressure meter (6a) and it is discriminated that the replacement with the purge resin (12) is completed at the point of time when the resin pressure meter (6A) at the time of purge operation becomes the level of the purge resin pressure data (22b). COPYRIGHT: (C)2008,JPO&INPIT