Method And Apparatus For Coupling Melt Conduits In A Molding System And/Or A Runner System

摘要

An expansion bushing of a molding runner system includes a body having a portion configured to cooperate with a melt conduit, the body sealing against the melt conduit responsive to a thermal expansion of the body relative to the melt conduit. Preferably, an annular expansion bushing has a cylindrical outer surface configured to seal, upon application of heat to the bushing, with an inner cylindrical surface of the first melt conduit and an inner cylindrical surface of the second melt conduit. Also preferably, the annular expansion bushing has an inner cylindrical surface corresponding substantially to melt passageways of the first and second melt conduits.