A seal is included in the design of the parting
line, and a vacuum pump quickly evacuates all cavities during a low clamp stage of mold closing.
However, by extending the bosses to the parting
This is accomplished by designing a gasket into the parting
line and using a vacuum pump to quickly evacuate all cavities.
Elford says the core becomes a three-plate structure with springs to force the parting
line shut while the back moves to open space for the second shot.
Everyone knows that the parting
line and flash base configuration determine the overall deflashing quality.
The CAD model of the finished part can be split along the parting
line before scaling up, adding machine stock, core prints, etc.
Six-stage clamping pressure reportedly allows enhanced venting from the parting
lines during fast fills.