Reaction injection molding system with finger gate

Details Reaction injection molding system with finger gate Reaction injection molding system with finger gate

1984-11-08

1986-10-21

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Distinct means to feed, support or manipulate preform stock...

Female mold type means

249 91, 264313, 2643286, 425543, B29C 3312

Patent

active

046183221

ABSTRACT:
A reaction injection molding system including: a core and a permanent cavity at least a portion of which is elastomeric. The elastomeric portion of the cavity has a first part defining at least a portion of the floor of the cavity, a second part defining at least a portion of the wall of the cavity and a third part defining at least a portion of the upper edge of the wall and extending therefrom to define at least a portion of the top of the cavity. A finger gate interconnects the cavity with a source of molding medium; the finger gate includes a plurality of spaced fingers on the core transverse to the edge of the wall and aligned with the flow of the molding medium into the cavity for engaging the third part of the elastomeric portion and securing the elastomeric portion in the cavity.

REFERENCES:
patent: 3759644 (1973-09-01), Ladney, Jr.
patent: 3947199 (1976-03-01), Hecht et al.
patent: 4123494 (1978-10-01), Evrard et al.
patent: 4486368 (1984-12-01), Hancock
Plastics Mold Engineering Handbook, Dubois & Pribble editors, Society of Plastics Engineers, Inc. 1978, pp. 336, 427, 490-492.

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