Plastic bottle caps are generally divided into gasket type and inner stopper type. The production process is divided into two types: compression molding and injection molding.
The dimensions are mostly 28 teeth, 30 teeth, 38 teeth, 44 teeth, 48 teeth, etc.
The number of teeth is divided into multiples of 9 and 12. The anti-theft ring is often divided into 8 buckles, 12 buckles, etc.
The structures are mostly: separated connection type (also known as bridge type) and one-time forming type. The usage is generally divided into gas bottle caps, heat-resistant bottle caps, and sterile bottle caps.
Due to the low cost of plastic materials, which combine the advantages of many materials, it has also been welcomed by packaging container material factories to a certain extent. However, due to its unclear structural changes and performance, its application in some food packaging fields still needs to be considered. However, with the development of science and technology, the application of plastic caps in the field of food packaging will become increasingly widespread.