초록 ▼

An electrically conductive element comprises a support (perferably a flexible continous polymeric film) and fibrous material (preferably a spun glass fiber web) which is partially embedded in the support and partially protruding therefrom, the protruding fibrous material being part of a conductive l

An electrically conductive element comprises a support (perferably a flexible continous polymeric film) and fibrous material (preferably a spun glass fiber web) which is partially embedded in the support and partially protruding therefrom, the protruding fibrous material being part of a conductive layer comprising randomly distributed fibers having conductive material adhered thereto. The element can be prepared from a conductive composition containing conductive particles dispersed in a liquid medium (preferably an aqueous dispersion of carbon particles) by applying said composition to a substrate comprising a support and fibrous material which is partially embedded in one surface of the support and partially protruding therefrom, and then drying to evaporate the liquid medium. The elements are particularly useful as heating elements which comprise electrodes so that current can be passed through the conductive layer.

대표청구항 ▼

An electrically conductive element which comprises (a) a support which is a flexible continuous film of polymeric material; and (b) randomly distributed fibers having first portions which protrude from the support and which have solid particulate electrically conductive material deposited thereon an

An electrically conductive element which comprises (a) a support which is a flexible continuous film of polymeric material; and (b) randomly distributed fibers having first portions which protrude from the support and which have solid particulate electrically conductive material deposited thereon and adherent thereto, thus forming an electrically conductive layer, and second portions which are embedded in the support and are substantially free of electrically conductive material adherent thereto. A process for the preparation of an electrically conductive element which comprises (a) depositing a liquid composition comprising an aqueous dispersion of electrically conductive particles onto the protruding fibers of a substrate which comprises a support and randomly distributed fibers having first portions which protrude from the support and second portions which are embedded in the support, the support and the portions of the fibers embedded therein being substantially impervious to the liquid composition; and (b) drying the aqueous dispersion.