Metal sheet embossed S-shaped pattern that are adjacent to each other for control of fluid flow direction

摘要

Disclosed is an embossed metal foil (100). The metal foil (100 has a plurality of parallel S-shaped surface undulations (120). In a plan view, the S-shaped undulations (120) at least partially overlap one another. Such arrangement of S-shaped surface undulations (120) defines fluid egress channels (130). The mutual arrangement of the undulations (120) and the fluid egress channels (130) provides controlled fluid egress in the plane of the sheet in all directions.