Partially dyed plastic lens and method of manufacturing same

A method for partially dyeing a plastic lens and plastic lens dyed by the method are herein disclosed, the method comprising forming a film of a nondyeable coating agent on the whole surface of the lens, cutting and removing at least part of the film and then immersing the plastic lens in a dyeing l...

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Bibliographic Details
Main Author MINOWA; TOSHIAKI
Format Patent
LanguageEnglish
Published 25.10.1988
Edition4
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
CONTACT LENSES
DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES INANY FORM
DYEING OR PRINTING TEXTILES
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
GENERAL PROCESSES OF COMPOUNDING
LAUNDERING
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
TEXTILES
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OF TEXTILES OR THE LIKE
WORKING-UP
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Summary:A method for partially dyeing a plastic lens and plastic lens dyed by the method are herein disclosed, the method comprising forming a film of a nondyeable coating agent on the whole surface of the lens, cutting and removing at least part of the film and then immersing the plastic lens in a dyeing liquid to selectively dye the part of the lens from which the film is cut and removed, the method making it possible to provide a dyed lens having a clear boundary between the dyed and nondyed parts.
Bibliography:Application Number: US19870017401