B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/20 (2006.01) B29C 45/27 (2006.01)
Patent
CA 2281065
An improved injection molding runnerless manifold and nozzle system, method and apparatus in which the fluid plastic molding material transfer conduits, such as the manifold runner channels and cavity injection nozzle passageway, are constructed of a low thermal conductivity, non-metallic heat insulation structural material to thereby heat insulate the liquified molding material or resin, whether thermosetting or thermoplastic, while resident in the manifold runners and/or nozzle passageways. The heat transfer and other physical parameters of the conduit material and structure are such that this molding material remains at a reasonable uncured molding temperature while resident in the transfer conduit for the duration of at least one injection cycle due to the heat insulation characteristics of these fluid flow conduits of the system.
Ouellette Joseph P.
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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