| 摘要 |
1,247,016. Electrically conductive adhesive tape. MINNESOTA MINING & MFG. CO. 21 Aug., 1968 [22 Aug., 1967], No. 40049/68. Heading B2E. [Also in Division H1] An electrically conductive adhesive tape comprises a flexible continuous electrically conductive backing embossed with many integral electrically conductive closely spaced projections of uniform height on at least one surface and a layer of adhesive covering said surface(s) of thickness at least as great as the height of the projections but not exceeding this by more than an amount that will readily undergo dielectric breakdown when a useful voltage is imposed between the tape and a conductive substrate to which the tape is applied. The backing may include at least one layer of highly conductive metal, such as aluminium or copper, the adhesive being disposed electrical contact therewith to form the adhesive surface(s) of the tape. The projections may comprise line-shaped projections and they may taper towards the top. The backing may consist of a self-supporting metal foil or a layer of metal coated on an organic polymeric film such as of polyethylene terephthalate. The adhesive may be pressure sensitive such as a 96:4 copolymer of isooctyl acrylate and acrylamide, a polyester of terephthalic acid, ethylene glycol and neopentyl glycol, or a mixture of a polyterpene polymer containing wood resin and natural rubber. |
