POM plus 20% glass fiber injection molding is hot runner or cold runner better?

POM plus 20% glass fiber is a common plastic material, often used in the manufacture of various parts and products. In the injection molding process, choose to use hot runner or cold runner, according to the specific situation to decide.

In general, the use of hot runner can better control the temperature and flow state of the melt, thereby improving product quality and production efficiency. However, hot runner requires additional energy and equipment costs, as well as more maintenance and maintenance work.

In contrast, cold flow channels are simple, cheap and do not require additional energy and equipment costs, but cannot control the temperature and flow state of the melt, which may affect the quality of the product. Therefore, in the case of large production volume and high requirements, it is recommended to use hot runner.

In fact, glass fiber wear on metal is very severe, and then use the needle valve hot runner and it is easy to wear the hot runner or screw to it, after a period of time will find leakage, and then the sealing near the gate is not strict, the needle valve near the kind of wire drawing and so on, you want to think about this how to do?

In addition, POM its temperature requirements are very strict, hot water in fact, temperature control you do well, if the kind of wearing hot runner, here play, there play, this hot runner in fact it is easy to have residual glue. If it is to save the material, in fact, the cost of the hot runner is also very high, and the hot runner behind the maintenance is not good.

In summary, for the plastic material of POM plus 20% glass fiber, hot runner or cold runner should be selected according to the specific production situation and requirements.