Patent ID: 11866883

Abstract:
A refiner segment configured to be attached to a refiner disc in a refiner of lignocellulosic material includes: a plurality of bars extending in a direction from an inner periphery of the refiner segment towards an outer periphery of the refiner segment; a plurality of intermediate areas, each intermediate area disposed between adjacent bars of the plurality of bars and configured to separate each bar from an adjacent bar, wherein at least one of the intermediate areas includes: a channel region having a first side and extending a first depth into the refiner segment, and a ridge region connected to the first side of the channel region and extending a second depth into the refiner segment less than the first depth. The channel region has a width W1 that gradually decreases in a direction from the outer periphery of the refiner segment toward the inner periphery of the refiner segment, and the ridge region has a width W2 that correspondingly increases in the direction from the outer periphery of the refiner segment toward the inner periphery of the refiner segment.