Extended couch nip on cylinder former
AssigneeAlbany International Corp.
InventorGregory D. Zilker
Life of this patent
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Abstract
An apparatus for use in a cylinder machine having a shoe with a concavely-shaped pressure surface that forms a substantially mating relationship with a cylinder mould or sieve. The concavely-shaped pressure surface of the shoe increases the amount of wrap that a making fabric has on a cylinder mould or sieve thereby increasing the amount of friction generated between the making fabric and the cylinder mould or sieve. The increased friction results in an improved torque transfer between the making fabric and the cylinder mould or sieve.
Claims35
A cylinder mould apparatus for use in a cylinder machine, said apparatus comprising:
- a shoe having a substantially concavely-shaped pressure surface forming a substantially mating relationship with a cylinder mould or sieve, wherein said concavely-shaped pressure surface increases an amount of wrap a making fabric has on said cylinder mould or sieve thereby increasing an amount of friction generated between said making fabric and said cylinder mould or sieve resulting in an increased torque transfer and increased driving force transmitted from said making fabric to said cylinder mould or sieve.
A method for increasing the amount of torque transferred from a making fabric to a cylinder mould or sieve in a cylinder machine comprising the steps of:
- providing a shoe having a concavely-shaped pressure surface forming a substantially mating relationship with said cylinder mould or sieve;
- and
- increasing an amount of wrap a making fabric has on said cylinder mould or sieve thereby increasing an amount of friction generated between said making fabric and said cylinder mould or sieve resulting in an increased torque transfer and increased driving force transmitted from said making fabric to said cylinder mould or sieve.
In a machine for producing paper products or fiber cement products having at least one making fabric and at least one cylinder mould or sieve, the improvement comprising:
- a loaded shoe having a substantially concavely-shaped pressure surface located at a position on a face of the cylinder mould's outer circumference;
- wherein said shoe increases an amount of wrap said making fabric has on said cylinder mould or sieve;
- and
- whereby the increased amount of wrap increases an amount of friction generated between said making fabric and said cylinder mould or sieve thereby increasing the torque transfer between said making fabric and said cylinder mould or sieve and increased driving force transmitted from said making fabric to said cylinder mould or sieve.
Dependencies are inferred from the claim text.