Plastic and nonmetallic article shaping or treating: processes – Optical article shaping or treating – Reshaping or treatment of an optical preform
Patent
1998-07-31
2000-08-01
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Optical article shaping or treating
Reshaping or treatment of an optical preform
264 16, 264 17, 264284, 264293, 425385, B29D 1100, B29C 5904
Patent
active
06096247&
ABSTRACT:
A method of making embossed optical polymer films and embossed optical polymer films made are described. The embossed optical polymer films have substantially the same optical properties as unembossed optical polymer films. The method includes providing an optical polymer film having first and second major surfaces, softening at least one of the first and second major surfaces to produce a softened surface, embossing the softened surface to produce an embossed optical polymer film, and cooling the embossed optical polymer film.
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U.S. Patent application Ser. No. 08/942,062, filed Oct. 1, 1997.
Keller Janet T.
Serino David F.
Strobel Mark A.
Ulsh Michael J.
3M Innovative Properties Company
Little Douglas B.
Vargot Mathieu D.
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