1. PET material because of its exceptional performance, are generally used two-step molding process, by the preform injection molding machine to produce a 24-hour After cooling, the internal molecular structure of their re-arranged in an orderly manner, and blowing for the next step to create good conditions, so that more excellent blowing performance products. Such as the famous Coca-Cola Company is currently using this technology. Its production processes are as follows:

PP/PE material→load material→dry→heat material →injection→cooling molding →preforms→caps .

2. Cap on in the injection molding machine is completely automated production, its production process is as follows:

Functions: 1) LCD computer control with big display screen 2) Hydraulic double proportional valve 3) Hard chrome plated high tensile strength steel tie bars 4) Generous space for fitting large moulds 5) Large opening stroke 6) Two position transducers to control Clamping and Injection 7) Four stages of injecting, independent velocity and pressure control 8) Hydraulic mould height adjustment device 9) Screw cold-start prevention device 10) Melt decompression control 11) Screw back pressure control 12) Multiple hydraulic ejection 13) Differential high speed clamping 14) Centralized lubrication system 15) Low pressure mould protection device 16) Mechanical safety interlock 17) Double electrical safety interlock 18) Oil return filter 19) Oil tank with inner stainless steel container

CE,ISO   

PET preform sample photos :