Mold for casting contact lenses utilizing and electron beam to p

Details Mold for casting contact lenses utilizing and electron beam to p Mold for casting contact lenses utilizing and electron beam to p

1975-04-21

1977-04-12

Shore, Ronald J.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electrical energy conducted through work

264 1, 264 22, 264337, 425808, B29D 1100, B29C 300

Patent

active

040172384

ABSTRACT:
A mold for casting contact lenses from an unpolymerized resin such as silicone gum wherein the resin is polymerized by high energy radiation such as an electron beam. One part of the mold is a cap capable of transmitting such radiation. The male section of the mold is gold plated to minimize reaction between the resin and the male section under the influence of the electron beam.

REFERENCES:
patent: 2948664 (1960-08-01), Rubens
patent: 3221083 (1965-11-01), Crandon
patent: 3284175 (1966-11-01), Spence
patent: 3563870 (1971-02-01), Tung
patent: 3563973 (1971-02-01), Arditti
patent: 3645861 (1972-02-01), Garvey
patent: 3721534 (1973-03-01), Kubick
patent: 3841598 (1974-10-01), Grucza
patent: 3915609 (1975-10-01), Robinson

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