Multilayer insulated electric wire and transformer using the same
AssigneeFurukawa Electric Co., Ltd.
InventorsHideo Fukuda, Yohei Ishii, Daisuke Muto, Hiroyuki Egawa
Life of this patent
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Abstract
A multilayer insulated electric wire having: a conductor; at least three extruded insulating layers covering the conductor; wherein an outermost layer (A) of the insulating layers is composed of an extruded coating layer containing a polyamide resin and the film thickness is 25 μm or less, wherein an inner layer (B) of the extruded insulating layers is composed of an extruded coating layer containing a crystalline resin having a melting point of 225° C. or more or an amorphous resin having a glass transition temperature of 200° C. or more.
Claims4
A multilayer insulated electric wire comprising:
- a conductor;
- and
- three extruded insulating layers covering the conductor, which insulating layers comprise an outermost layer (A) and inner layers (B);
- wherein the outermost layer (A) is composed of an extruded coating layer containing a resin, said resin consisting of a polyamide resin and a thickness of the layer is 25μm or less,
- wherein base resin components to form the inner layers (B) each are comprised of 75 to 95% by mass of a polyester-based resin of the crystalline resin having a melting point 225° C. or more, except a liquid crystal polymer, and 5 to 25% by mass of a polyester-based resin of a liquid crystal polymer having a melting point of 225° C. or more.
Dependencies are inferred from the claim text.