Method for transiently wetting lens molds in production of conta

Details Method for transiently wetting lens molds in production of conta Method for transiently wetting lens molds in production of conta

1995-09-29

1997-10-07

Bell, Janyce

Coating processes

Mold coating

427377, 427384, 264 11, 264 23, B05D 302, B29D 1100

Patent

active

056745575

ABSTRACT:
Hydrophilic contact lens molds are transiently modified to provide a water dynamic contact angle equal to or less than 100.degree. by treatment with a wetting agent which may be water or a surfactant composition which provides a mold surface having a water wetting force of at least 70 mg to afford a reduction in lens hole defects in hydrophilic contact lens manufacture.

REFERENCES:
patent: 4150073 (1979-04-01), Neete
patent: 4419463 (1983-12-01), Atkinson et al.
patent: 4534916 (1985-08-01), Wichterle
patent: 4806287 (1989-02-01), Sulc
patent: 4983332 (1991-01-01), Hahn et al.

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