Lead alloy foil for laminated tape

In a power cable of the type having a conductor, a conductor shield covering the conductor, an insulation layer and a covering layer, the improvement comprising

• a water impervious layer formed of a lead laminated tape formed of a lead alloy foil consisting essentially of 1.0 to 4.0 wt. % of tin, 2.0 to 7.0 wt. % of antimony, and the balance being lead, wherein the Sn/Sb ratio is 3 or less;
• and an electrically conductive plastic film laminated at least on one of the surfaces of the lead alloy foil and having a volume resistivity of 10.sup.6 ohms-cm or less, said electrically conductive plastic film being composed of:
• (a) 40-100 parts by weight of a mixture comprising ethylene-acrylic acid copolymer and/or ethylene-ethyl acrylate copolymer, and/or unmodified polyolefin and modified polyolefin prepared by modifying polyolefin by unsaturated carboxylic acid or its derivatives, and an epoxy group-containing unsaturated compound, said unsaturated carboxylic acid or its derivatives and said epoxy group-containing unsaturated compound being used in an amount of 0.01-1.0 wt. % based on the mixture of the modified and unmodified polyolefins;
• (b) 0-60 parts by weight of at least one polyolefin selected from the group consisting of polyethylene, ethylene-vinyl acetate copolymer and non-polar, polyolefin-based low crystalline resin;
• and (c) 5-140 parts by weight of at least one electrically conductive material selected from the group consisting of carbon black, carbon fiber and graphite.