PET Plastic Bottle Blowing Process Introduction
PET blow molding bottles can be divided into two types, one is a pressure bottle, such as a bottle filled with carbonated drinks; the other is a non-pressure bottle, such as a bottle filled with water, tea, edible oil, etc. 1. Equipment At present, manufacturers of PET automatic blow molding machines are mainly imported from France's SIDEL company, Germany's KRONES company, and domestically produced by FILLEX. Although the manufacturers are different, the principles of their equipment are similar, and they generally include five parts: blank supply system, heating system, bottle blowing system, control system and auxiliary machinery. 2. PET bottle blow molding process The important factors affecting the PET bottle blow molding process are preform, heating, pre-blow, mold and production environment. 2.1 Preforms When preparing blow-molded bottles, PET chips are first injection-molded into preforms. According to the National Food Safety Law, secon...