Method for reducing lens hole defects in production of contact l

Details Method for reducing lens hole defects in production of contact l Method for reducing lens hole defects in production of contact l

1995-09-29

1998-12-15

Wu, David W.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Changing mold size or shape during molding or with shrinkage...

264 25, 264138, 264338, B29D 1100

Patent

active

058492224

ABSTRACT:
Improved homogeneity and uniformity of surface energy characteristics in a mold surface for hydrophilic contact lens production is achieved with the temporal application of a surface active agent such as Tween 80, to facilitate wetting of the optical surface of the mold, especially the convex mold, with the reactive monomer mix.

REFERENCES:
patent: 5542978 (1996-08-01), Kindt-Larsen et al.

Affiliated with

Also associated with

Rating

Method for reducing lens hole defects in production of contact l does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for reducing lens hole defects in production of contact l, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reducing lens hole defects in production of contact l will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1454712