Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Continuous or indefinite length
Reexamination Certificate
2011-04-05
2011-04-05
Vargot, Mathieu D. (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Continuous or indefinite length
C264S210100
Reexamination Certificate
active
07919021
ABSTRACT:
The present invention aims at providing a manufacturing method for an optical sheet capable of manufacturing a thin optical sheet of a uniform thickness distribution with a high thickness accuracy, and high shaping/transferring performances, and an optical sheet manufactured by using the manufacturing method. A manufacturing method for an optical sheet according to the present invention includes passing a resin discharged from a die between a touch roll and a shaping roll under pressure.
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Baba Kazuo
Hirose Kazunori
Matsuzaki Ichiro
Nakazato Etsuo
Oda Yoshihiro
Kuraray Co. Ltd.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Vargot Mathieu D.
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