Sumitomo Electric Industries, Limited

Tsunenori Morioka

Hiroshi Hayami

Masayuki Ishikawa

Seie Kobayashi

Kazuto Shiina

Provided are a halogen-free electric wire including an insulation coating the life of which is less reduced in the case of the insulating coating being in contact with a PVC-resin-containing member; a wire bundle including the halogen-free electric wire and a PVC-resin-containing member, wherein a reduction in the life of a covering material of the halogen-free electric wire is lessened; and an automotive wiring harness comprising the wire bundle. The halogen-free electric wire includes a conductor and a covering material that covers the outer surface of the conductor, wherein the covering material includes a polyolefin resin and a flame retardant, and the flame retardant contains aluminum hydroxide as a main component, in particular, at a ratio of 80 weight percent or more. The wire bundle includes the halogen-free electric wires and a member containing a vinyl chloride resin. The automotive wiring harness comprises the wire bundle.

Halogen free electric wire, wire bundle, and automotive wiring harness

A halogen free flame retardant cable that has excellent flexibility and abrasion resistance, exhibiting fusion adhesion property to mold materials, such as PBT and nylon, and excellent flame retardant property, preferably having abrasion resistance. In particular, there is provided a halogen free flame retardant cable characterized in that it includes an insulating wire, an inner sheath and an outer sheath, the inner sheath comprised of a polyolefin resin or a resin composition composed mainly of the resin, the outer sheath comprised of a product of crosslinking of a mixture of thermoplastic polyurethane elastomer and thermoplastic polyester elastomer or a resin composition composed mainly of the mixture, the outer sheath containing at least one flame retardant selected from among metal hydroxides and nitrogenous flame retardants in an amount of 3 to 35 parts by weight per 100 parts by weight of the resin mixture. Further, there is preferably provided a halogen free flame retardant cable wherein the inner sheath contains a specified flame retardant in an amount of specified range.

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Osaka, Japan

Tsunenori Morioka