Fixed Blow Molding Machine

Kaotesi is a China source factory producing accumulator blow molding machines, which are highly efficient molding equipment for large-sized and thick-walled hollow products. Their core feature is pre-storing a fixed amount of melt in an accumulator cylinder and then rapidly extruding it to form a parison, solving the problems of severe parison sag and uneven wall thickness that occur in continuous blow molding machines when producing large products. The working process is roughly divided into a plasticizing and storing stage and a blow molding stage. In the plasticizing and storing stage, granular plastics (such as HDPE, PP, PVC) enter the extruder from the hopper, and are compressed, sheared, and heated by the screw rotation to form a uniform molten melt. After the melt enters the storage cylinder through the one-way valve, the piston of the storage cylinder will slowly retract under hydraulic drive to accumulate a certain amount of melt.