Anisotropically pressure-sensitive electroconductive composite s

Details Anisotropically pressure-sensitive electroconductive composite s Anisotropically pressure-sensitive electroconductive composite s

1978-06-01

1980-04-22

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including sheet or component perpendicular to plane of web...

338 72, 338 99, 339 59M, 339 60M, 339 61M, 428292, 428303, 428374, 428378, 428379, 428397, 428400, 428401, 428447, B32B 700, B32B 508, B32B 516

Patent

active

041996372

ABSTRACT:
Anisotropically pressure-sensitive electroconductive composite sheets are provided which have a very low electric conductive resistance in the direction perpendicular to the plane of the sheet when compressed with an adequate pressure in the direction but a high insulating resistance in all directions within the plane of the sheet. The composite sheets are constructed so that electrically conductive fibers are uniformly dispersed in the matrix of an electrically insulating substance, the average length of the fibers ranging from 20 to 80% of the thickness of the sheet, and are aligned in the direction substantially perpendicular to the plane. They are useful as a switching material in various miniaturized electronic circuits.

REFERENCES:
patent: 2744981 (1956-05-01), Spears
patent: 2885459 (1959-05-01), Pulsifer et al.
patent: 3324445 (1967-06-01), Miller
patent: 3795037 (1974-03-01), Luttmer
patent: 3949141 (1976-04-01), Marzocchi et al.
patent: 3962531 (1976-06-01), Lever et al.
patent: 3979356 (1976-09-01), Walters
patent: 3983265 (1976-09-01), Letoffe
patent: 3998513 (1976-12-01), Kobayashi et al.
patent: 4003621 (1977-01-01), Lamp
"Cho-Nector" in Nikkei Electronics, p. 31, published Apr. 7, 1975.
"Cho--Nector" in Nikkei Electronics, Apr. 4, 1975, titled "Rubber Sheets Having Electroconductivity in the Direction of Thickness but Insulating within the Plane".

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