Insulation plate formation

Details Insulation plate formation Insulation plate formation

1975-12-12

1980-07-22

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156252, 156289, 264328, B29F 106

Patent

active

042138140

ABSTRACT:
A method and apparatus for molding elastomeric stock, the method comprising interposing an apertured, heat-resistant, flexible, insulation plate between a heated mold and the discharge portion of an elastomeric stock injection unit such that respective mold cavities provided in the mold are aligned with respective apertures in the insulation plate which intercommunicate the mold cavities with an internal discharge chamber in the injection unit. The mold and injection unit are moved relative to one another such that each presses against the other through the intermediary of the insulation plate, thereby permitting expulsion and transferring of a portion of elastomeric stock from the injection unit into the mold cavities to be cured, an excess portion of elastomeric stock remaining in the injection unit being prevented from undergoing curing by means of the presence of the insulation plate.

REFERENCES:
patent: 1857586 (1932-05-01), Coffey
patent: 3360829 (1968-01-01), Germ
patent: 3836306 (1974-09-01), Pasch et al.
patent: 3859023 (1975-01-01), Pasch
patent: 3859406 (1975-01-01), Czerski
patent: 3918870 (1975-11-01), Tetzlaff

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