Foamed electrical wire and a method of producing the same
First Claim
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1. A foamed electrical wire, comprising:
- a conductor; and
a foamed insulating layer;
wherein the foamed insulating layer comprises a resin, which is only one resin selected from the group consisting of polyphenylene sulfide, polyethylene naphthalate, polyether ether ketone and thermoplastic polyimide, andwherein an average diameter of bubbles formed in the resin of the foamed insulating layer is 5 μ
m or less.
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Abstract
A foamed electrical wire, containing: a conductor; and a foamed insulating layer; in which the foamed insulating layer comprises a thermoplastic resin that is a crystalline thermoplastic resin having a melting point of 150° C. or more or a non-crystalline thermoplastic resin having a glass transition temperature of 150° C. or more, and the average bubble diameter of the foamed insulating layer is 5 μm or less.
225 Citations
14 Claims
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1. A foamed electrical wire, comprising:
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a conductor; and a foamed insulating layer; wherein the foamed insulating layer comprises a resin, which is only one resin selected from the group consisting of polyphenylene sulfide, polyethylene naphthalate, polyether ether ketone and thermoplastic polyimide, and wherein an average diameter of bubbles formed in the resin of the foamed insulating layer is 5 μ
m or less. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of producing a foamed electrical wire, comprising a step of:
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coating a conductor with an insulating layer; and foaming the insulating; wherein the foamed insulating layer comprises a resin, which is only one resin selected from the group consisting of polyphenylene sulfide, polyethylene naphthalate, polyether ether ketone and thermoplastic polyimide, and wherein an average diameter of bubbles formed in the resin of the foamed insulating layer is 5 μ
m or less. - View Dependent Claims (11, 12, 13, 14)
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Specification