How Does Three Plate Injection Mold Work

Three Plate Injection Mold is a common injection mold ,it consists three parts: Fixed Half, Moved Half, Runner Plate.  Three Plate Molding Process is completed by two times of closing and opening  when injecting.  When opening, runner plate is first time, then moved half is second; When closing, Moved half is first time, runner Plate is second.

The following is the main working principle:

⇒Mold Closed: At the begining of the injection cycle, the moved and fixed half will be retatively closed ,sealing the mold of cavity and

core a closed space

⇒Plastic Injection: After mold is closed, the melted plastic is injected into the nozzle of the injection machine, and the melted plastic is

injected into the mold cavity through high pressure

⇒Plastic Filling: Injection machine inject molten plastic into the mold, filling the ful space of mold cavity. Plastic cools and solidifies in

the mold, gradually forming the shape of plastic products

⇒Cooling: After the completion of plastic filling, the cooling system starts to work, and the cooling and solidification process of the platic is accelerated by circulating the cooling medium ( normally water)

⇒Mold Opened: When plastic is fully cooled and solidified, the moved and fixed half will separate and open, part is enjected from the mold

Main Type of Gating For Two Plate Mold

Side Gating	Direct Gating	Sub Gating	Banana Gating

What's  the  Advantage of Three Plate Mold