Patent ID: 6852265

Claim:
A method of distributing pressurized melt in a multi-level stack mold having a stationary platen, a first moving platen, a second moving platen and a third moving platen, the moving platens being moveable between an open position and a closed position in a longitudinal direction generally parallel to a generally centrally disposed mold axis, a plurality of mold cavities defined between the stationary and moving platens, a first platen manifold coupled to said first moving platen and in communication with at least one of said plurality of mold cavities, and a second platen manifold coupled to said third moving platen and in communication with at least one of said plurality of mold cavities, the method comprising: (a) transferring the pressurized melt to a distribution manifold coupled to the second moving platen via a valve gated sprue bar assembly; (b) distributing the pressurized melt to the first and second platen manifolds for delivery to said a plurality of mold cavities.