The Technology And Development Trend Of Plastic Bottle Caps

Since the introduction of plastic anti-theft bottle caps, it has gone through more than 20 years. After a long period of precipitation and accumulation, a situation of various specifications of plastic bottle caps has been formed today. In the early stage of the development of plastic anti-theft bottle caps, the injection molding process dominated the world, but the world is changing with each passing day, and the pace of human innovation is always advancing. The compression molding process was born and entered the field of plastic bottle cap manufacturing. The world is divided equally by injection and compression molding. Until today, the compression molding process has become the mainstream process in the plastic beverage bottle cap market.

Any technology has its own bottleneck, and the bottle cap industry is no exception. This issue is analyzed and compared in art. The so-called cavity filling imbalance refers to the inconsistent speed of molten plastic entering each mold cavity. In the injection molding process, from the moment the screw of the injection molding machine advances, the molten plastic cap will enter each mold cavity. Various factors such as EDM deviation and uneven plastic flow shear rate are superimposed together, which will cause inconsistent glue feeding speed of each mold cavity.