Polyethylene terephthalate (PET) preforms are the unfinished products made by injection molding of polyethylene terephthalate, which is the most common thermoplastic polyester. PET is strong, stiff, hard, and dimensionally stable material. It is resistant to water, gas, and all the chemicals except alkalis. PET is colorless and highly transparent. Food and beverages industries are continuously replacing glass and other metals bottle with PET bottles.
