Alcon, Inc.

Yasin Acikgoez

Halina Heidrich

Eduard Jetzlaff

Matthias Schwab

Thomas Tonn

Jan Bernard

Maricel Teresa Repetto

An injection molding apparatus for manufacturing an ophthalmic lens mold having a front surface comprising a lens forming portion and a rear surface, comprises a first molding tool and a second molding tool. The first and second molding tools are movable towards and away from each other between a closed position and an open position. In the closed position the first mold forming portion of the first molding tool and the second mold forming portion of the second molding tool define a cavity between them corresponding in shape to the shape of the ophthalmic lens mold. The surface of the second mold forming portion, at least in a central zone thereof, has a surface roughness Sin the range of 0.3 &#x3bc;m to 2 &#x3bc;m, and a surface roughness Sin the range of 10 &#x3bc;m to 50 &#x3bc;m.

Injection molding apparatus and method for manufacturing an ophthalmic lens mold through injection molding

An apparatus for simultaneously manufacturing a plurality of plastic molds comprises: A front surface of the first molding members comprises recesses to allow the formation of pins projecting from the rear surface the plastic mold into the recesses to make the plastic molds adhere to the first molding members. The gripper tool is movably arranged only in a direction parallel to the first surface into the space formed between the first and second surfaces for transferring the plastic molds to the gripper members and out of this space again.

Apparatus and method for simultaneously manufacturing a plurality of single-use plastic molds for making ophthalmic lenses through injection molding

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Munster, Germany

Yasin Acikgoez