目前,包装材料生产工艺上实现了一个新的突破,即通过两段拉伸吹塑成型工艺制备聚对苯二甲酸乙二酯(PET)饮料杯。与热成型和注射成型的PET饮料杯相比,由于拉伸吹塑工艺特有的定向作用,拉伸吹塑成型的PET饮料杯具有强度高、阻隔性好、透明度高、没有碎屑产生等优势。因此,总体上,拉伸吹塑工艺的生产成本比热成型或者注射成型低30％。并且与热成型工艺生产的饮料杯相比,拉伸吹塑的饮料杯阻隔性能提高了17％。 两段拉伸吹塑工艺的关键是在FRC-12旋转再热型拉伸吹塑机上10个加热区进行运转设计和优化加热。FRC-12有12个吹塑模槽,这些吹塑模槽的数量取决于机器运转状况以及所吹塑饮料杯的形状。可以根据实际需要增加吹 At present, the packaging material production process to achieve a new breakthrough, that is, through two stretch blow molding process for the preparation of polyethylene terephthalate (PET) beverage cups. Compared with thermoformed and injection molded PET beverage cups, stretch-blow molded PET beverage cups have the advantages of high strength, good barrier properties, high transparency and no scrap generation, due to the specific orientation of the stretch blow molding process . As a result, the stretch blow molding process generally costs 30% less than thermoforming or injection molding. And compared with the thermoforming process of beverage cups, stretch blow molded beverage cups improved barrier performance by 17%. The key to the two stretch blow molding process is to design and optimize the heating in 10 heated zones on the FRC-12 rotary reheat stretch blow molding machine. The FRC-12 has 12 blow mold cavities, the number of these blow mold cavities depends on the machine running condition and the shape of the blow molded beverage cup. According to the actual need to increase the blow