Method for the manufacture of contact lenses using microwave ene

Details Method for the manufacture of contact lenses using microwave ene Method for the manufacture of contact lenses using microwave ene

1983-03-17

1985-01-22

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 23, 264 25, 4251742, 425808, B29D 1100

Patent

active

044951175

ABSTRACT:
The invention concerns a method for manufacturing a contact lens, through molding within water-tight molds. The polymerization of lenses is insured by arranging a number of molds within one or several sealed metallic chambers (9) constituting a resonant cavity of a unique mode for an ultra high frequency wave; these molds are positioned in an area of the cavity where the electromagnetic field approximately of ultra high frequency waves is homogeneous, and are distributed so that the amounts of basic composition to be polymerized act as a load fitted to the inside of said cavity.

REFERENCES:
patent: 3263005 (1966-07-01), Emerick
patent: 3732048 (1973-05-01), Guerga et al.
patent: 4144434 (1979-03-01), Chiron et al.
patent: 4269581 (1981-05-01), Vry et al.
patent: 4382902 (1983-05-01), Feurer
patent: 4390482 (1983-06-01), Feurer
Ency. of Chem. Tech. "Microwave Technology", vol. 15, _pp. 494-522, John M. Osepchuk.

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