With the development of economy and society, people’s life has gradually become more colorful. As a important item in modern life, preforms will be widely used in life. To use such a wide range of PET preforms, it is necessary to have strict Production process, let the professional China Pet Bottle manufacturer – Jilian mold to introduce us to its strict production process:
First, PET preforms are typically formed from hot runner molds. It is preferred to have a heat shield between the mold and the injection molding machine. The preform has a thickness of about 12 mm and the heat shield must withstand high pressure. Exhaust must be sufficient to avoid local overheating or fragmentation
Second, the quality of the PET preform depends on the quality of the model provided. Preforms are divided into two types, one is a long gate and the other is a short gate. Domestic preform manufacturers use more short gate parts while longer doors are used abroad. The pre-production of the long rubber mouth is cut by the gate at the bottom, and the tension is evenly distributed during the blowing process, so that the quality of the bottle is better.
Finally, Pet Preform can be recycled at the end of the production process, which helps to save on raw material costs. In today’s increasingly scarce oil resources, domestic manufacturers will be more inclined to long gate preforms.