The important factors affecting the PET bottle blow molding process---environment
The important factors affecting the PET bottle blow molding process---environment
The quality of the production environment also has a great influence on the process adjustment. Constant conditions can maintain the stability of the process and the product.PET bottle blow molding is generally preferred at room temperature and low humidity.Pressure bottles shall meet the requirements of stress test and withstand test simultaneously.
Stress test is an internal quality control to prevent the cracking and leakage of molecular chains during the contact between the bottle bottom and the lubricant (alkaline) during the PET bottle filling.The pressure test is the quality control to prevent the cylinder from bursting after being filled with a certain pressure gas.
In order to meet these two needs, the thickness of the center point should be controlled within a certain range. Generally speaking, the center point is thin, the stress test is good, and the pressure resistance is poor.The center point is thick, the pressure test is good, the stress test is bad.Of course, the result of stress test also has a lot to do with the material accumulation in the transition area around the center point, which should be adjusted according to practical experience
