B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/711
B29C 45/28 (2006.01) B29C 45/27 (2006.01)
Patent
CA 1318998
ABSTRACT OF THE DISCLOSURE An injection molding system having at least one insulation gate seal extending outwardly to bridge an insulative air space between a heated nozzle and the adjacent cooled cavity plate. Each seal has a central bore therethrough to convey pressurized melt from the nozzle to the aligned gate. The outer end of each seal has a circular groove extending between a central portion and a surrounding flange portion. The flange portion is substantially larger in diameter than the gate and extends outwardly past the face of the central portion into sealing contact around the gate against the surrounding surface of the cavity plate. The combination of the clearance provided between the face of the central portion and the surrounding surface of the cavity plate and the distance between the gate and the surrounding flange portion limits the temperature of the cavity plate immediately around the gate, while still providing the necessary seal.
605616
4437667 Canada Inc.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
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