Patent ID: 8822825
Filing Date: 2014-09-02
Classification: C08J,H01B

Abstract:
1. A foamed electric wire, comprising: a conductor; and a foamed insulation layer covering the conductor, wherein the foamed insulation layer is obtained by: kneading a base resin formed of a high melting point propylene-based resin having a melting point of 150° C. or higher with a master batch containing a thermally decomposing chemical foaming agent and a low melting point propylene-based resin having a melting point of 125° C. or higher and 135° C. or lower and being a random copolymer, and melting the low melting point propylene-based resin, followed by foaming by inducing thermal decomposition of the thermally decomposing chemical foaming agent; and a compounding ratio of the low melting point propylene-based resin in the entire resin component formed of the high melting point propylene-based resin and the low melting point propylene-based resin is less than 20% by mass.