PURPOSE: To provide a composite flexible material having excellent electrical conductivity, heat resistance, etc. by forming a fine metallic particle layer by arc spraying on at least one surface of a fiber material.

CONSTITUTION: A metal such as Al, Zn, iron or the like or the alloy thereof is thermally sprayed by arc spraying on at least one surface of a fiber material consisting of cotton, cuprammonium rayon, glass fibers, etc. to form a fine metallic particle layer thereon. The fiber material having ruggedness, etc. and air permeability is more preferable to the smooth fiber material and the size of the metallic particles to be formed by arc spraying is preferably about 5W150μm. The preferable pickup thereof is about 20W500g/m2. A rigid body is placed behind the fiber material apart at about ≤5mm space therefrom to prevent deformation of the fiber material by air pressure in the stage of thermal spraying. The surface of the fiber material on which the fine metallic particle layer is formed is further preferably coated with an elastomer layer consisting of a resin such as polyurethane or rubber such as silicone rubber.