Lens dyeing method and apparatus comprising heating element cont

Details Lens dyeing method and apparatus comprising heating element cont Lens dyeing method and apparatus comprising heating element cont

1988-10-31

1991-10-01

Clingman, A. Lionel

Coating apparatus

Control means responsive to a randomly occurring sensed...

Temperature responsive

8506, 8611, 8636, 8148, 68 15, 118400, 118429, 118620, 118666, 351159, 351162, B05C 1100, D06P 190, G02C 702

Patent

active

050523376

ABSTRACT:
An apparatus and process for tinting plastic material; specifically, polycarbonate and other plastic eyeglass lenses. The dye solution has an elevated boiling point which allows for dyeing of the material at rates and temperatures above 212 degrees F. The dye solution temperature is maintained and controlled within a preselected tolerance by a temperature controlling unit and its associated heater, which is affixed to the dyeing tank. Dye solution is agitated and dispursed by a stirrer and stirring apparatus, and dye solution level is maintained by an automatic fill apparatus.

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Surfacing and Finishing, vol. XVIV, No. 11 (Jul. 1986) pp. 65-75.
BPI.RTM. 1988 Catalog (Brain Power, Inc., 4470 S.W. 74th Avenue, Miami, Fla.) pp. 9-35.
20/20 (Dec. 1988) p. 56.

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