US 10,062,484 B2 · Flexible soft magnetic core, antenna with flexible soft magnetic core and method for producing a flexible soft magnetic core

Abstract

The flexible soft magnetic core (1) includes parallel continuous ferromagnetic wires (4) embedded in a core body (2) made of the polymeric medium (3). The continuous ferromagnetic wires (4) extend from one end to another end of said core body (2), are spaced apart from each other and are electrically isolated from each other by the polymeric medium (3). The method for producing the flexible soft magnetic core (1) comprises embedding continuous ferromagnetic wires (4) into an uncured polymeric medium (3) by means of a continuous extrusion process, curing the polymeric medium (3) with the continuous ferromagnetic wires (4) embedded therein to form a continuous core precursor (10), and cutting said continuous core precursor (10) into discrete magnetic cores (1).

Claims20

Dependent claims

Flexible soft magnetic core including a ferromagnetic material arranged to form parallel magnetic paths within a core body that is made of a cured polymeric medium, said parallel magnetic paths being electrically insulated from each other by said polymeric medium, wherein said ferromagnetic material comprises a plurality of parallel, continuous, ferromagnetic elements embedded in said core body made of said polymeric medium, wherein said continuous ferromagnetic elements are spaced apart from each other and extend from one end to another end of said core body and characterized in that:

said core is elongated along a longitudinal axis and flexible in at least two orthogonal directions;
and
said continuous, ferromagnetic elements are flexible wires;
whereby said core allowing a flexion with respect to said longitudinal axis parallel to said wires and also with respect to a transversal axis perpendicular to said wires.

1 more element

A method for producing a flexible soft magnetic core, the method comprising:

embedding continuous ferromagnetic wires into an uncured polymeric medium by means of a continuous extrusion process,
curing the polymeric medium with the continuous ferromagnetic wires embedded therein to form a continuous core precursor, and
cutting said continuous core precursor into discrete magnetic soft cores,
wherein said continuous extrusion process comprises passing the continuous ferromagnetic wires through an extrusion chamber while the polymeric medium is extruded through said extrusion chamber.

1 more element

Dependencies are inferred from the claim text.

Flexible soft magnetic core, antenna with flexible soft magnetic core and method for producing a flexible soft magnetic core

Life of this patent

Flexible soft magnetic core, antenna with flexible soft magnetic core and method for producing a flexible soft magnetic core

Life of this patent

Abstract

Claims20