Patent ID: 8557086
Filing Date: 2013-10-15
Classification: D21F

Abstract:
1. Vacuum equipment for a fiber web machine having a fabric moveable to define a machine direction, comprising: a frame arranged to be supported on the fiber web machine, the frame having an interior forming a source of vacuum; a cover mounted to the frame, the cover separating the fabric from the frame interior forming the source of vacuum, the cover having a wear surface and having portions defining a plurality of openings, said openings being defined by opposite edges, the opposite edges defining a distance x in the machine direction therebetween, the openings in the cover for extending a vacuum effect from the interior; wherein the cover wear surface is in contact with the fabric; and wherein the cover is of a plate construction having a raw material thickness s between the fabric and the frame interior forming the source of vacuum, wherein the thickness s is less than or equal to the distance x.