Refining Segment
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Jan 29, 2024
filing date -
Feb 6, 2023
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Abstract
A refining segment (4) for a refiner (1) for refining lignocellulose-containing fibrous material has an inner end edge (20) and an outer end edge (21) opposite to the inner end edge. A refining surface (5) has refining bars (25) and refining grooves (26) therebetween and at least one recess (27, 27′, 27″) extending from the outer end edge of the refining segment at least partly towards the inner end edge for forming at least partly at least one backflow guide groove (28) extending from the outer end edge of the refining segment at least partly towards the inner end edge. A volume of the at least one recess is arranged to decrease towards the inner end edge for providing the volume of the at least one backflow guide groove to decrease towards the inner end edge.
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