Patent ID: 8251230

Claim:
A notched wire disposed in layers in a filtration apparatus, comprising: first projection stripes formed on one surface of a band plate, at prescribed intervals along a longitudinal direction of the band plate, so as to extend across a layering direction of the band plate in a flow direction that is substantially perpendicular to the longitudinal direction and to the layering direction of the band plate or has a prescribed inclination angle with respect to the longitudinal direction of the band plate; and second projection stripes extending between the first projection stripes on the one surface of the band plate, a height of the second projection stripes being smaller than that of the first projection stripes and a width of the second projection stripes being less than a width of the first projection stripes in the flow direction of the band plate; wherein each of the second projection stripes is formed within a center band that is narrower than a width of the band plate in the flow direction.