Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Utilizing plasma – electric – electromagnetic – particulate – or...
Patent
1995-02-03
1997-05-06
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Utilizing plasma, electric, electromagnetic, particulate, or...
264 17, 264 19, 264 26, B29D 1100
Patent
active
056268009
ABSTRACT:
A method of producing a microstructure bearing article that includes the steps of molding the microstructure on the base, curing the resin that forms the microstructure, and heat treating the microstructure. The heat treating is performed at a temperature that is at least equal to a normal glass transition temperature of the resin. The heat treating raises the glass transition temperature of the resulting polymer above approximately 333.degree. K. such that groove tip impression is reduced. Such articles are useful in backlit displays which are useful in computers and the like.
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Kingston Daniel J.
Williams Todd R.
Griswold Gary L.
Jordan Robert H.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Vargot Mathieu D.
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