Abstract: The invention relates to a device for hydroentangling and/or structuring webs that includes an suctioning rotating drum and a structured shell, including at least two rings which can be pushed on and attached to the drum, is disposed at a distance from the cylindrical surface of the drum around. A web can be at least partially looped around the structured shell. At least one water bar including a nozzle strip with a plurality of nozzles is arranged relative to the structured shell to entangle and/or to structure and/or to perforate the web by the water jets. The invention further relates to the structured shell.

Abstract: The invention relates to a device for hydroentangling and/or structuring webs that includes an suctioning rotating drum and a structured shell, including at least two rings which can be pushed on and attached to the drum, is disposed at a distance from the cylindrical surface of the drum around. A web can be at least partially looped around the structured shell. At least one water bar including a nozzle strip with a plurality of nozzles is arranged relative to the structured shell to entangle and/or to structure and/or to perforate the web by the water jets. The invention further relates to the structured shell.

Abstract: An apparatus for applying a liquid layer to a passing web has a lower flow surface having a lower edge juxtaposed with the web and a first reservoir having an angled downstream surface having an upper edge forming at an upper edge of the lower flow surface a first overflow. A upper flow surface extends upward from adjacent the first overflow, and a second reservoir has an angled downstream surface extending upward to an upper edge forming at an upper edge of the upper flow surface a second overflow. Respective supplies feed liquid to the reservoirs so that the liquid rises therein and flows up the respective downstream surfaces, over the respective overflows, and down the respective flow surfaces, merging on the lower flow surface.