Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1991-06-07
1993-09-07
Sluby, P. C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428220, 428412, 428421, 428419, 428480, 428521, 428522, B32B 702, B32B 2736, C08F22014
Patent
active
052427420
ABSTRACT:
Extruded, smooth finished solid sheet or film, which may have a thickness <1 mm, comprised of a thermoplastic plastic (such as polycarbonate) with a glass transition temperature >50.degree. C., which under conditions of orientation displays optical birefringence, may be manufactured into a flat strip with smooth finished surfaces, to yield a strip which has characteristics as follows:
REFERENCES:
Chemical Abstracts, vol. 91 (1979), S. Junji et al. (Asahi Chemical Industry Co. Jpn. Kokai Tokkyo Koho 79 17,982 (Cl. B29D7/02), Feb. 9, 1979.
Funk Karl
Gross Heinz
Roehm GmbH Chemische Fabrik
Sluby P. C.
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