There are even injection moulding machines dedicated to making preforms having a rectangular tiebar clearance to fit the needs of making preforms.

The paper introduces one to four moulds production of PET bottle blanks using domestic plastic injector. Selections of cooling temperature of mould and injector temperature and pressure are included.

The forming technology was analyzed, including drying of PET resin and the temperature control of mold work section. The construction of a hot runner mold and its mechanism were described.