Winding filter

Abstract

A winding filter that can be more easily manufactured while having shape retainability even if the winding filter is not subjected to heat treatment. A winding filter formed in a cylindrical body including a stitch by overlapping metal wire materials forming a plurality of layers in a radial direction, in which a terminal end portion of the metal wire material of an outermost layer among the plurality of layers is joined by: adhesion to a part of a layer adjacent at least radially inward relative to the outermost layer; being drawn into an inner surface side via either one of axial end portions and adhesion to at least a part of an innermost layer, or adhesion to a part of either one of the axial end portions, and a joining strength of the terminal end portion of the metal wire material of the outermost layer is 5 N or more.

Dependencies are inferred from the claim text.