Shoe press belt

Details Shoe press belt Shoe press belt

D - Textiles, Paper

21

F

D21F 3/00 (2006.01) D21F 3/02 (2006.01)

Patent

CA 2434530

In a shoe press belt of a papermaking machine, the part of the paper web-facing layer in which water-holding grooves are formed is composed of a surface sublayer, having a relatively low hardness, and an underlying layer having a relatively high hardness. The higher hardness of the underlying layer prevents cracks from forming where the cross-sectional shape of the grooves tends to change as the belt is compressed. The lower hardness of the surface sublayer prevents the formation of cracks as a result of forces acting on the belt in the direction opposite to the machine direction at the nip location in a papermaking machine.

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