Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1985-02-06
1986-12-30
Herbert, Thomas J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
156288, 361323, 427 79, 427100, 427261, 427265, 428194, 428336, 428461, 428421, B32B 300, B32B 1508
Patent
active
046328564
ABSTRACT:
There is disclosed a laminate comprising alternating polymer sheets and metal layers between the polymer sheets, the laminate being substantially free of adhesive. Each polymer sheet of the laminate has a thickness not exceeding about 25 .mu.m, and the resistivity of the metal layer is from 1 to about 4 ohms/square. Such laminates are useful in making capacitors and piezoelectric multimorphs.
A method of making such laminates is also disclosed, wherein a plurality of metal-coated polymer sheets are compressed, in the absence of an adhesive, under pressure sufficient to reduce the thickness of each of the polymeric film layers to a value that is no larger than about 25 .mu.m.
REFERENCES:
patent: 3991451 (1976-11-01), Murayama
patent: 4049859 (1977-09-01), Yoshikawa et al.
patent: 4378620 (1983-04-01), Lavene
patent: 4405402 (1983-09-01), Quillian
patent: 4427609 (1984-01-01), Broussoux et al.
SPE Journal, Dec. 1971, vol. 27, pp. 42-48, Williams, Jr. et al.
Marcus, Ferroelectrics "Performance Characteristics of Piezoelectric Polymer Flexure Mode Devices", vol. 57, Jul. 1984, pp. 203-220.
Marcus Michael A.
Morrison Edward D.
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