Stock material or miscellaneous articles – Article having latent image or transformation – Striated for iridescence
Patent
1989-12-08
1992-12-29
Thibodeau, Paul J.
Stock material or miscellaneous articles
Article having latent image or transformation
Striated for iridescence
428 369, 428 3691, 428172, 428412, 362 31, 362 32, B32B 310, F21V 704
Patent
active
051750309
ABSTRACT:
A microstructure-bearing composite plastic article can be superior, both in microstructure and in physical properties, when it is a composite of a tough, flexible substrate, at a surface of which is microstructure formed of a cured oligomeric resin having hard segments and soft segments, which cured resin is substantially confined to the microstructure portion of the composite. Such a composite plastic article can be made by depositing an uncured oligomeric resin composition onto a master negative molding surface in an amount barely sufficient to fill the cavities of the master, filling the cavities by moving a bead of the composition between a substrate and the master, and curing the deposited composition by ultraviolet radiation while keeping the temperature during curing to not more than 50.degree. C. above the typical use temperature of the finished composite plastic article.
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patent: 4374077 (1983-02-01), Kerfeld
patent: 4414316 (1983-11-01), Conley
patent: 4420502 (1983-12-01), Conley
patent: 4477529 (1984-10-01), Campbell
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SPIE Proceedings, vol. 692 p. 235 (1986).
Lu Shih-Lai
Williams Todd R.
Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Nakarani D. S.
Skolnick Steven E.
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