PROBLEM TO BE SOLVED: To realize a metal filter at low cost which can secure a sufficient contact area between a fluid such as passing air and a catalytic layer or an absorption layer, improve passing efficiency by keeping the passing resistance of a fluid, that is, pressure loss low, and efficiently obtain an excellent purification effect.SOLUTION: A metal filter is configured which has through grooves 10 extending in a column direction to make a fluid pass through in one or both of a columnar crest 20 and a trough 21 of a metal plate body 2 where a plurality of crests and troughs are alternately formed, and has standing pieces 30/31 standing on the convex side of the crests 20 or the troughs 21 in the opening edges 11 of the through grooves. The standing pieces 30/31 are long pieces provided each in both of a pair of opening edges extending in a columnar direction by facing each other on the through groove 10, and extending almost over the whole length of each opening edge.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】通過する空気等の流体と触媒層や吸着層等との接触面積を十分に確保でき、流体の通過抵抗、すなわち圧損を小さく抑えて通過効率も向上させることができ、優れた清浄化効果等を効率よく得ることができる金属フィルタを低コストに実現する。【解決手段】列状の山部20と谷部21が交互に複数形成された金属板本体2の前記山部と谷部の一方又は双方に、流体を通過させるための列方向に延びる貫通溝10を有し、且つ、該貫通溝の開口縁部11に、当該山部20又は谷部21の凸面側に起立する起立片30/31を有することを特徴とする金属フィルタを構成した。起立片30/31は、例えば貫通溝10を臨み互いに対向して列方向に延びる一対の開口縁部の双方にそれぞれ設けられ、各開口縁部のほぼ全長にわたって延びる長片である。【選択図】図1
