my country's polyester containers are currently mainly limited to two-way stretch polyester blow-molded bottles.
China's biaxially oriented polyester blow molding bottle started late in the plastic packaging industry, but since the introduction of the injection stretch blow PET bottle production line from Japan in the 1980s, it has achieved good results in beverage packaging represented by cola Subsequently, a large number of advanced foreign injection stretch blow PET bottle production equipment was introduced. At the same time, on the basis of digesting foreign advanced technology, the two-step PET stretch blow molding machine with independent intellectual property rights, suitable for China's national conditions and simple structure was developed. , It is used in conjunction with a general-purpose injection machine to blow PET biaxially stretched bottles using PET preforms made by the general-purpose injection machine. Among the domestic two-step biaxially stretched PET bottle blowing machines, some models can not only produce ordinary PET biaxially stretched bottles, but also heat-resistant biaxially stretched PET bottles. The volume of the products that can be produced basically covers Imported equipment can produce a wide range from small bottles of tens of milliliters to large barrels of 5 gallons. These simple blow molding machines not only have the advantages of low cost and strong maneuverability, but also can produce high-quality and practical two-way stretch PET blow molding with proper control. Therefore, they have been universally recognized by the plastics processing industry at home and abroad. In addition to a large number of domestic use, some have been exported. Although there are still gaps between these equipment and imported advanced equipment such as low production efficiency, poor automation, and poor product dimensional accuracy, for some particularly strict application fields (such as the packaging of Coca-Cola, Pepsi, etc.), There are still some difficulties in application. In addition, the production equipment for multi-layer co-blown PET bottles is yet to be developed in China, but the development and utilization of the domestic two-step biaxially stretched PET bottle blowing machine has played an important role in promoting the rapid development of PET bottle production. . At present, China’s PET bottle production enterprises have the most advanced automatic PET bottle production lines made by well-known companies in the world (such as the automatic PET bottle production lines of Japan’s ASB and Aoki Co., Ltd., and the automatic PET bottle production lines of France’s SEDEL. Production line and the full-automatic PET bottle production line of SIPA in Italy). At the same time, there are also a large number of small and medium-sized enterprises that adopt various simple and practical two-way PET bottle blowing machines designed and manufactured by our country with different degrees of automation. An unprecedented situation in which a hundred flowers compete for beauty and prosperity.
