There are various types of plastic bottle caps on the market, all with their own unique threads. Correspondingly, many people must be confused about how the threads are formed. Let’s quickly discuss it in detail with the plastic bottle cap manufacturers. Bar!

In fact, the threads of plastic bottle caps are divided into internal threads and external threads. The internal threads on plastic bottle caps are generally formed by a threaded core, and the external threads are formed by threads and rings. There is also a mold for the threaded part. The structure is also different, and the threading method of the internal thread of the plastic bottle cap is also different. If the structure allows, it can be designed into segmented internal threads. From the top of the mold mechanism, if the space allows, , you can use an inclined push rod to pull the core inside and create segmented internal threads. The main forming methods for complete internal threads on plastic bottle caps are as follows:

1,The forced stripping method is adopted, but the structure of plastic parts and materials with good elasticity are allowed.

2,The threaded core is made into a movable insert, and it is manually demoulded outside the mold. It seems that the structure of the membrane tool is very simple, but the production efficiency is not very high, the labor intensity is high, and automatic operation cannot be realized.

3,The automatic thread removal method of the rotating mechanism has high production efficiency and relatively low labor intensity. It can realize automatic operation and is suitable for batch production.

In fact, we have a simple understanding of the thread forming method of plastic bottle caps, which is very helpful for us to use and purchase the products correctly. If you still have some doubts in your mind, friends are welcome to consult Anhui Hengzheng Packaging Technology Co., Ltd. , we will have professionals to answer your questions.