Composite sheet material for magnetic and electronic shielding a

Details Composite sheet material for magnetic and electronic shielding a Composite sheet material for magnetic and electronic shielding a

1986-10-30

1988-09-27

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Foil or filament smaller than 6 mils

428624, 428645, 428648, 428659, 428679, 428667, 428676, 428935, B32B 1508, B32B 1518

Patent

active

047741481

ABSTRACT:
Composite sheet material, used for shielding magnetism and electromagnetic waves, principally made of an electrodeposited iron foil, as the core, with a thickness of at least 10 .mu.m which is applied on either side surface thereof a plating layer with a respectively predetermined metal, and of, a covering layer which is formed of a suitable sheet-like material and which is to be laminated on at least one of the two plating layers through the medium of an adhesive layer. A variety of products utilizing this composite sheet material as an essential elements thereof which stretches over a wide field wherein magnetic and electronic shield is required, for example: magnetic-card holders; magnetic-card protection cases or boxes; envelopes and containers for keeping and transporting magnetic recording media; wallpapers for various special rooms, etc.

REFERENCES:
patent: 2706329 (1955-04-01), Hegponheide
patent: 2877286 (1959-03-01), Vance et al.
patent: 2978531 (1961-04-01), Appleman
patent: 3341102 (1967-09-01), Stephens et al.
patent: 3436467 (1969-04-01), Smith
patent: 3512946 (1970-05-01), Hutkin
patent: 3629760 (1971-12-01), Seitanakis
patent: 4544571 (1985-10-01), Miller
Electronic Equipment, Jun. 1957, pp. 20-21.
"Netic and Co-Netic Magnetic Shielding", Magnetic Shield Division-Perfection Mica Co, Catalog No. 67, Jul. 1967, 4 pages.
"ACE Shielded Enclosures", Ace Engineering & Machine Co., Brochure, Mar. 1955, 5 pages.
L. Missel et al., IBM Technical Disclosure Bulletin, vol. 21, No. 10, Mar. 1979, p. 4190.

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