On the hot runner system of the system is the most basic one is that it must have sufficient mechanical strength to withstand the huge volume of plastic solution from the channel. It can not be too thin and too thin to affect the mechanical strength, too thick, too thick, so that the hot runner plate volume weight is too large, and the mold height also increases.

Hot runner plate also should be sufficient resistance to corrosion resistance. Some plastics such as PVC in the process of its contact with the mold parts has a strong corrosive. In the design of the split plate also should be given. In addition to the need for a large number of glass fiber reinforced plastic mold parts including the split plate has great wear. Heat flow way with the temperature is consistent with the plastic processing temperature.

3 runner

Hot runner system design is to ensure that the hot runner system has reasonable plastic pressure loss, reasonable shear rate and shear stress, to reduce the residence time of plastic in the hot runner system, and reasonable to reduce the residence time in the hot runner system, and reasonable to reduce the residence time and fast color temperature rise in the hot runner system, the DRILL GUN method can only be used in this method. In the dead time, the solution of the dead time is too long and the thermal decomposition of the solution is too long, resulting in poor quality products.

Another way is to make the use of the method of cutting machine. The split plate is made up of two pieces of steel, the first use of the milling method in two pieces of steel, and then the upper and lower two half of the plate through special welding or other mechanical method. The advantages of this kind of shunt plate can be made into arbitrary shape and is not limited to the form of direct flow, and no flow dead.