Process for producing contact lens

Details Process for producing contact lens Process for producing contact lens

1989-02-27

1990-03-20

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156628, 156643, 156645, 156654, 156668, 2504921, 351160H, B44C 122, B29C 3700, C03C 1500, C03C 2506

Patent

active

049098969

ABSTRACT:
The contact lens of the present invention is produced by a process comprising a step of irradiating a transparent polymeric material with charged particles and a step of applying an etching treatment to the resulting material to form microfine holes therein along the tracks of the charged particles.

REFERENCES:
patent: 3612871 (1971-10-01), Crawford
patent: 3833786 (1974-09-01), Brucker
patent: 4621912 (1986-11-01), Meyer

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