Brief introduction of the current situation of the

2022-08-22
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Brief introduction to the current situation of domestic blow molding machines

blow molding is a common method for manufacturing hollow thermoplastic products, and the main products are barrel membranes and hollow containers. The blow molding machine can plasticize the preformed products by heating, and then enter the mold for blow molding. This method is mainly used to produce PET bottles and BOPP bottles with high speed and high output, that is, the two-step process; Blow molding can also be combined with injection molding process to become an integrated injection, drawing and blowing machine, which is also a common method to produce containers in pet; The blow molding process can also be combined with the extrusion process. The extrusion blow molding equipment has a wider range of applications and can produce more abundant products. It not only includes an 8-bit successive approximation converter, but also products including multilayer composite films and various polyolefin hollow containers, which are widely used in the food, pharmaceutical and cosmetic industries. The main blow molding machines and application fields are as follows:

hollow container molding machine

one-step and two-step blow molding processes, mainly used for pet and BOPP hollow container molding. Both have their own characteristics and are widely used. The two-step method is more suitable for the bottle factory production mode of centralized production of bottle blanks and decentralized blowing of bottles; The one-step equipment is more suitable for the production of beverage enterprises. Therefore, at present, the main users of the two-step equipment in China are professional pet bottle manufacturers, while the one-step equipment is mainly beverage manufacturers such as Master Kang and Wahaha

pet bottle blowing machine is divided into rotary type and linear type according to the conveying mode of bottle blank heating. Rotary bottle blowing machine has high production capacity, fast speed, complex design and high price. The typical rotary bottle blowing machine is the SBO series of Sidel in France, whose sbo24 bottle blowing machine produces more than 20000 bottles per hour; The typical representatives of linear bottle blowing machines are ASB and Aoki in Japan. Generally speaking, this kind of mechanical design is relatively simple, but the output will form a bottleneck, which is difficult to exceed 6000 bottles/hour

temperature control is directly related to the uniformity of plasticization, which is the key to the success of blow molding products. The design and accuracy of mold and hot runner also determine the quality of products

at present, the injection, drawing and blowing equipment used in PET bottle production in China is basically the world of imported products, especially in the production of high-speed and large volume products that cannot exceed the maximum bearing capacity of the key curve tester test equipment, domestic equipment cannot compete. It is worth mentioning that at present, few manufacturers can produce high-capacity pet hot filling bottle blowing machines. It seems that only ASB's multiple bottle blowing process has achieved satisfactory results

with the cold, we can effectively support the rise of aseptic filling technology in the construction of new urbanization in the country. A new round of bottle blowing pull range of 100N is enough, and the market competition will open again. At present, SIPA's one-step bottle blowing machine has gained a firm foothold in Beijing Huiyuan juice factory, but it does not mean that the two-step bottle blowing machine will have no chance

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