Method for reducing lens hole defects in production of...

Details Method for reducing lens hole defects in production of... Method for reducing lens hole defects in production of...

B - Operations, Transporting

29

D

B29D 11/00 (2006.01) B29C 33/60 (2006.01)

Patent

CA 2186566

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.

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