Electret article

Details Electret article Electret article

1983-04-26

1985-04-23

Epstein, Henry F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Edge feature

179111E, 307400, 428515, 428516, 428520, B32B 302

Patent

active

045130493

ABSTRACT:
An electret article comprising an even number of electret plastics films laminated together, with the surfaces of the same polarity facing each other, said laminate having the same polarity on both external sides. It keeps its high surface charge density. It will find use in such applications as acoustic materials, filters, and medical supplies.

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patent: 3924324 (1975-12-01), Kodera
patent: 3928497 (1975-12-01), Iwakuni et al.
patent: 3967027 (1976-06-01), Igarashi et al.
patent: 4356049 (1982-10-01), Tamura et al.

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