B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 35/02 (2006.01) B29D 11/00 (2006.01) B32B 3/30 (2006.01) G02B 1/04 (2006.01) G02B 5/04 (2006.01) G02B 6/04 (2006.01) G02B 6/00 (2006.01)
Patent
CA 2209921
A method of producing a microstructure bearing article (11) that includes the steps of molding the microstructure (22, 24, 26, 28) on the base (34), curing the resin that forms the microstructure, and heat treating the microstructure. The heat treating is performed at a temperataure 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 ° K such that groove tip impression is reduced. Such articles are useful in backlit displays (10) which are useful in computers and the like.
Cette invention concerne un procédé de production d'article (11) portant une microstructure, ledit procédé consistant à mouler la microstructure (22, 24, 26, 28) sur une base (34), à cuire la résine composant la microstructure et à faire subir un traitement thermique à ladite microstructure. On effectue ce traitement thermique à une température au moins égale à la température normale de transition vitreuse de la résine. Ce traitement élève la température de transition vitreuse du polymère produit au-dessus de 333 DEG K environ de façon à réduire l'empreinte des crêtes et des sillons. Ce type d'article sert à équiper les écrans rétro-éclairés (10) d'ordinateurs et autres dispositifs analogues.
Kingston Daniel J.
Williams Todd R.
Smart & Biggar
The Minnesota Mining & Manufacturing Company
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