Injection molding machine is an important processing equipment for the production of plastic products. In the operation of the equipment, due to the technical content of the equipment or the problem of the material, many injection molding problems occur in the injection molding. Therefore, the injection molding parameters of the vertical injection molding machine need to be accurately set. Flashing is a problem that often occurs during the injection molding process, which can seriously affect the quality of the product and damage the equipment of the injection molding machine. What is the cause of this problem, how to solve the problem, need a better understanding.

In the vertical injection molding process, we found that first, if the temperature of the melt in the barrel, nozzle or mold is too high, the viscosity of the plastic melt will decrease. Therefore, its viscosity becomes small, causing the fluidity to become large, causing a flashing problem in entering the mold. And in the injection can not quickly increase the amount of material. 

It is even more difficult to add more melt because it prevents the product from being sunken. The problem of dents in the product can be improved by prolonging the injection and holding time. Many people will increase the injection pressure or injection speed in order to achieve better production efficiency. However, this method should be determined according to the thickness of the product.