Extended couch nip on cylinder former

D - Textiles – Paper – 21 – F

Patent

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Details

D21F 9/04 (2006.01) D21F 11/06 (2006.01)

Patent

CA 2605375

An apparatus for use in a cylinder machine having a shoe (28) with a concavely- shaped pressure surface that forms a substantially mating relationship with a cylinder mould (14) or sieve. The concavely-shaped pressure surface of the shoe increases the amount of wrap that a making fabric (16) has on a cylinder mould (14) or sieve thereby increasing the amount of friction generated between the making fabric (16) and the cylinder mould (14) or sieve. The increased friction results in an improved torque transfer between the making fabric and the cylinder mould or sieve.

L~invention concerne un appareil utilisé dans une machine cylindrique ayant un sabot (28) avec une surface de pression de forme concave formant une relation sensiblement d~appariement avec un moule cylindrique (14) ou un tamis. La surface de pression de forme concave du sabot augmente la quantité enroulée d~un tissu de fabrication (16) sur un moule cylindrique (14) ou un tamis augmentant ainsi la quantité de friction générée entre le tissu de fabrication (16) et le moule cylindrique (14) ou le tamis. La friction augmentée se traduit par un transfert de couple amélioré entre le tissu de fabrication et le moule cylindrique ou le tamis.

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