ROBERT WEIS
Broker in Leominster, MA
License number
Massachusetts 88970
Issued Date
Sep 1, 1986
Expiration Date
Jan 19, 1995
Type
Salesperson
Address
Address
Leominster, MA 01453
Professional information
Continuous Gradient Dyeing Of Plastic Ribbon
US Patent:
4442788, Apr 17, 1984
Filed:
Sep 30, 1982
Appl. No.:
6/429653
Inventors:
Robert Weis - Leominster MA
Assignee:
Foster Grant Corporation - DE
International Classification:
B05C 302
US Classification:
118405
Abstract:
There is described a process for producing, in a continuous manner, a gradient dyeing across the width of a long strip of a plastic sheet and an apparatus used therefor. In a preferred embodiment of the invention, the orientation of the plastic strip is maintained substantially constant during the passage through a dye bath, and the dye liquid level is repetitively varied by use of a liquid level control means. This invention is particularly useful for making gradient-dyed plastic sheets which in turn are used for making sunglass lenses.
Continuous Gradient Dyeing Of Plastic Ribbon
US Patent:
4521214, Jun 4, 1985
Filed:
Jan 9, 1984
Appl. No.:
6/569427
Inventors:
Robert Weis - Leominster MA
Assignee:
American Hoechst Corporation - Somerville NJ
International Classification:
B05C 302
US Classification:
8506
Abstract:
There is described a process for producing, in a continuous manner, a gradient dyeing across the width of a long strip of a plastic sheet and an apparatus used therefor. In a preferred embodiment of the invention, the orientation of the plastic strip is maintained substantially constant during the passage through a dye bath, and the dye liquid level is repetitively varied by use of a liquid level control means. This invention is particularly useful for making gradient-dyed plastic sheets which in turn are used for making sunglass lenses.