Fujikura Limited

Michio Koike

Sueji Chabata

Takao Tsuboi

Akihito Kurosaka

Haruo Tominaga

Kenichi Miyauchi

Kazuo Hanaoka

Takashi Nishida

Toshihito Watanabe

Hirohito Takemura

Kazumichi Kasai

A copper alloy wire has a composition composed of no less than 0.01% by weight of Ag and balance Cu and unavoidable impurities. The copper alloy wire has been prepared by drawing a wire stock having the composition at a reduction ratio of no lower than 40% and subjecting the wire stock to heat treatment for half annealing to have a tensile strength of no lower than 27 kg.multidot.f/mm.sup.2 and an elongateion of 5%. An insulated elecric wire includes the copper alloy wire as a conductor and an insulation layer covering the wire. Also, a multiple core parallel bonded wire includes two or more such insulated electric wires bonded parallel to each other.

Copper alloy wire, and insulated electric wires and multiple core

A stranded insulated wire and a method of producing the same. The stranded insulated wire is produced by applying a coating material containing polyvinyl butyral and a stabilized polyisocyanate to an enameled strands assembly and then by baking the assembly. The coating material contains about 1 to about 1000 parts by weight of the stabilized polyisocyanate per 100 parts by weight of the polyvinyl butyral.

Stranded insulated wire

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Tokyo, Japan

Michio Koike