FIELD: process engineering.
SUBSTANCE: set of in inventions relates to production of preforms (14). Note here that finished preforms have threaded neck area and body with size increased compared with injection mould cavity. Said preforms are produced by injection of polymer melt in injection mould with geometry selected to make radial length of inner space not exceeding radial length of the neck inner space. Then, preforms are withdrawn by unloading gripper from opened mould. Transfer pins are fitted into preform inner space and withdrawn from unloading gripper and fed to the device for additional cooling. Preforms are inflated in unloading gripper and/or additional cooler with the help of excess pressure so that preform inflated case geometry is larger than the injection mould cavity. Device to this end comprises the injection mould of preset parameters, polymer material feed and plasticising appliances for fabrication of preforms and transfer of preform into aforesaid cooler.
EFFECT: perfected method.
24 cl, 8 dwg
