1. PET material because of its exceptional performance, are generally used two-step molding process, by  injection mould 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

Plastic cap sample photos :