Patent ID: 9121440
Filing Date: 2015-09-01
Classification: D21F,F16C

Abstract:
1. A transfer suction roll ( 21 ) including an outer circumferential surface for transferring a material web ( 17 ) from one machine section to a subsequent machine section, comprising: a perforated suction roll shell ( 22 ) that is rotatably supported at each end by a roller bearing ( 25 ); a suction box ( 24 ) mounted inside the suction roll shell ( 22 ); spaced apart seals ( 32 ) on the suction box ( 24 ) which delineate and define a position of a suction zone ( 37 ) on the perforated suction roll shell ( 22 ); and a suction hood ( 26 ) arranged on the outer circumference of the transfer suction roll ( 21 ) by which air can be sucked out of the suction box ( 24 ) through the perforated suction roll shell ( 22 ); wherein the seals ( 32 ) of the suction box ( 24 ) are formed by flexible sealing strips ( 34 , 35 ) and wherein during initial installation or replacement the flexible sealing strips ( 34 ) are cured and pre-stressed against the roll shell ( 22 ) and subject to shortening to final sealing length by grinding against the perforated suction roll shell ( 22 ) when the transfer suction roll ( 21 ) is run.