The composition of a mold has a very large number of systems, today, Dongguan Plastic mold factory editor for you to explain why a set of plastic mold exhaust system, the common way to exhaust what.
In the injection molding process, the mold cavity and the injection system in addition to cause air, and heating or plastic solidification produces low molecular volatile gases, these gases can not be smooth if the molten plastic out of the cavity, there may be a result of filling gas generated by compression caused by high temperature, plastic partial carbonization burning, or plastic bubbles, or plastic welding caused by poor plastic lower strength, and even hinder plastic filling etc.. In order to make the gas out of the cavity in a timely manner, the mold design must consider the issue of gas emissions.
There is a common way to open the exhaust gas and the use of mold parting surface or mold parts with the clearance of natural discharge.
Note: the above information is organized by Jie Zheng mold on the Internet, welcome to reprint, indicate the source!