Molding processes

Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...

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264 11, 264 26, 264496, 264 39, B29D 1100

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active

061138177

ABSTRACT:
Efficient and consistent processes for manufacturing moldings, especially ophthalmic lenses such as contact lenses. The processes comprises a series of improvements, including improvements in the areas of conditions for dispensing liquid prepolymer into lens molds, male and female mold mating, reusable molds, mold cleaning, lens separation from molds (demolding), lens handling, and in-line inspection. Cyclic series of processing steps are also disclosed. Additionally, an improved molding tool is disclosed, with the molding tool including a male mold housing and a female mold housing, each of which have disposed therein a plurality of mold halves.

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