Multilayer insulated wire and a manufacturing method therefor

Details Multilayer insulated wire and a manufacturing method therefor Multilayer insulated wire and a manufacturing method therefor

H - Electricity

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B

H01B 7/02 (2006.01) B29C 47/02 (2006.01) H01B 3/42 (2006.01) H01B 3/44 (2006.01) H01B 7/29 (2006.01) H01B 13/14 (2006.01) H01F 27/32 (2006.01) H01F 41/06 (2006.01)

Patent

CA 2109336

Provided is a multilayer insulated wire comprising a conductor and three or more insulating layers covering the conductor, in which each of first and second insulating layers, as counted from the conductor side, is (a) an extrusion-coating layer of an intimate resin mixture compounded so that an ethylene-based copolymer, having a carboxylic acid or a metal salt of the carboxylic acid on the side chain thereof, accounts for 5 to 40 parts by weight compared to 100 parts by weight of a thermoplastic straight- chain polyester resin, (b) an extrusion-coating layer consisting mainly of a thermoplastic straight-chain polyester resin formed by combining an acid constituent and an alcoholic constituent the whole or a part of which is cyclohexanedimethanol, or (c) an extrusion-coating layer of an intimate resin mixture compounded so that the ethylene-based copolymer, having the carboxylic acid or the metal salt of the carboxylic acid on the side chain thereof, accounts for 50 parts or less by weight compared to 100 parts by weight of the thermoplastic straight-chain polyester resin formed by combining the acid constituent and the alcoholic constituent the whole or a part of which is cyclohexanedimethanol, a third insulating layer being an extrusion-coating layer of a thermoplastic polyamide resin or a intimate resin mixture consisting mainly of the thermoplastic polyamide resin. Also provided is a bondable multilayer insulated wire which further comprises a bondable layer of an copolymerized-polyamide resin formed on the third insulating layer.

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