All along, China's hollow blow molding machine why not reach the level of commercialization? There are mainly four reasons.

1.There are some misunderstandings in development ideas

In the development of hollow blow molding machine, enterprises only focus on the development of the main machine, ignoring the development of the mold. Hollow blow molding machine is a combination of the main machine and the mold. From the importance of the main machine and the mold to the whole machine, the main machine only accounts for half of the whole machine. The successful development of the main machine is not equal to the successful development of the whole machine. Only when the main machine and the mold are successfully developed together can the hollow blow molding machine be successfully developed. The key technology of "three position" and "four position" machines in other countries is mould. However, in the process of developing hollow blow molding machines, some of our plastic machinery factories did not correctly understand the relationship between the main machine and the mould. They only paid attention to the development of the main machine, but did not put the development of the mould in a more important position. The main reason for the failure lies in this.

2.Mold technology level does not meet the requirements

Hollow blow molding machine mold is different, has its own characteristics. In the mold of hollow blow molding machine, the key is the mold of injection blank. The material of the mold has special requirements for its performance, such as small coefficient of thermal expansion and contraction, high heat transfer efficiency and high thermal conductivity. The structure of the mold is in the form of hot runner. From the current level of mold technology in China, we can not develop and manufacture the mold of hollow blow molding machine that meets the quality standard. It is understood that some mold factories on the hollow blow molding machine mold which material is not clear, how can develop a mold?

3. The investment of mould factory is very little

The investment of mould factory is very little, so that the mould technology level can not be developed. It is understood that foreign development and manufacture of hollow blow molding machine mold factory, all have their own hollow blow molding machine, has been repeated tests, until to meet the requirements. But our country does not have a mold factory for the development of hollow blow molding machine and the purchase of equipment.

4.The main engine factory and the mold factory invest very little

The main engine factory and the mold factory must cooperate, both have the division of labor, joint development, each bear the risk. This is the experience of developing injection drawing blow molding machine abroad.