First, what is PET? PET （Polyethylene terephthalate） is one kind of polyester Is the abbreviation of English PolyethyleneTerephthalate Characteristics of PET raw materials * Excellent transparency of over 90%, excellent surface gloss and a glassy appearance. * Excellent fragrance retention and good air tightness. * Excellent chemical resistance, with acid as the head is almost resistant to all organic drugs. * Good hygiene, PDA – recognized by the largest chemical laboratory in the United States. * No toxic gases will occur when burning. * Excellent strength properties, and can be further improved by biaxial stretching. * The most complete PET preform quality defect solution in history Second, why should the PET material be dried before the production of the preform? A. Remove moisture from PET Because PET has a certain water absorption, it absorbs a lot of water during transportation, storage and use. High levels of water are exacerbated in production: – AA (Acetaldehyde) an increase in acetaldehyde. The odor of the beverage bottle causes the beverage to taste (but has little effect on the human body) – IV (Intrinsic Viscosity) viscosity drop. It has an
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