Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Including a second component containing structurally defined...
Patent
1992-07-22
1996-06-18
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Including a second component containing structurally defined...
360133, 369291, 428426, 428458, 428461, 4284744, 4289133, G11B 2303, B32B 516, B32B 1508, B32B 2708
Patent
active
055276067
ABSTRACT:
The present invention provides a shutter for a protective envelope containing a recording disk, having both satisfactory sliding property and satisfactory heat-resisting property. The shutter is formed by folding a laminated sheet having a first layer formed by folding a laminated sheet having high heat-resisting property and a second layer formed of a material having low frictional property so that the first layer forms the outer surface of the shutter and the second layer form the inner surface of the shutter. The first layer of the laminated sheet ensures the shutter satisfactory heat-resisting performance and the second layer of the same ensures the shutter satisfactory sliding performance. A printed layer or an evaporated metal layer may be formed between the first and second layers of the laminated sheet and/or the first and second layers of the laminated sheet may be colored to enhance the aesthetic appearance of the shutter.
REFERENCES:
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patent: 4698714 (1987-10-01), Sugawara et al.
patent: 4908726 (1990-03-01), Kato
patent: 5121380 (1992-06-01), Fujita et al.
patent: 5161080 (1992-11-01), Funayama et al.
patent: 5226035 (1993-07-01), Kato et al.
Patent Abstracts of Japan, vol. 14, No. 64 (P-1002) Feb. 06, 1990, & JP1286190 (Canon Inc) Nov. 17, 1989.
Patent Abstracts of Japan, vol. 16, No. 491 (P-1434) Oct. 12, 1992, & JP4176070 (Mitsubishi) Jun. 23, 1992.
Patent Abstracts of Japan, vol. 15, No. 237 (P-1216) Jun. 19, 1991, & JP03073479 (Iwata Denko) Mar. 28, 1991.
Miller Jerry A.
Musacchio Pasquale
Sand Stephen
Sony Corporation
Thibodeau Paul J.
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