Invention Grant
US08496785B2 Combination of a press felt with a pressure roll covering and/or suction roll covering for a paper machine 有权
将压榨毛毯与用于造纸机的压力辊覆盖物和/或吸辊覆盖物组合

Combination of a press felt with a pressure roll covering and/or suction roll covering for a paper machine
Abstract:
A combination of a press felt with a pressure and/or suction roll covering for a papermaking machine, including a porous press felt with a carrier structure. The pressure or suction roll covering having a circumferential groove surface structure having a groove width in the range of 0.5 mm to 1.5 mm, a distance between grooves in the range of 1.5 to 2.5 mm and a groove depth in the range of 1.5 mm to 4 mm. A percentage of an open surface relative to an overall surface of the pressure roll covering is in a range of 20% to 50%. The suction roll covering additionally having an arrangement of holes with a plurality of suction holes completely penetrating through the suction roll covering, whereby a percentage of an open surface in relation to an overall surface of the suction roll covering is in a range of 30% to 50%.
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