The advantages of plastic bottle caps lie in their strong plasticity, small density, light weight, high chemical stability, diversified appearance changes, novel design and other characteristics, which are cherished by shopping malls and more and more consumers among the vast number of similar products. With the development of society and the progress of science and technology, plastic bottle caps are also developing rapidly. Today, plastic bottle caps can be divided into injection molding bottle caps and compression molding bottle caps according to the manufacturing process. The manufacturing process and characteristics of different types of bottle caps are also very different.
The development history of plastic bottle caps is particularly far-reaching. Nowadays, many plastic bottle caps are made by injection molding technology. The injection molding process is to melt the raw materials, then fill them into the mold, cool them down, demould them all the way, and cut rings to make plastic bottle caps. Its advantage is that the mold design is particularly sensitive, and it can produce plastic bottle caps with relatively complex forms, which are always popular in shopping malls. However, its disadvantage is that the utilization rate of raw materials is not high, and the manufacturing cost is increased.
Pressed plastic bottle cap is a new manufacturing process of plastic bottle cap in recent years. It does not need to melt all raw materials to implement mold closing and compression. The manufacturing speed is fast, the product yield is high, and the utilization rate of raw materials is high, and the manufacturing cost is relatively low; Its defect is that it is unable to produce complex products. Generally, plastic bottle caps that are simply manufactured in large quantities will be manufactured by pressing.