Blade element for refiner
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United States of America Patent
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Nov 5, 2019
Grant Date -
Nov 9, 2017
app pub date -
Oct 23, 2015
filing date -
Oct 29, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A blade element (12) for a refiner (10, 11) for refining fibrous material has an inner edge (13) and an outer edge (14) and first blade bars (18) and first blade grooves (19) therebetween, the first blade bars and the first blade grooves extending toward the outer edge of the blade element. At top surfaces of the first blade bars there are second blade bars (20) and second blade grooves (21) therebetween. At least some of the second blade bars (20) lying on an outer end portion (12b) of the blade element (12) have a width which is larger than a width of second blade bars (20) lying on an inner end portion (12a) of the blade element (12) and/or is increasing in direction toward the outer edge (14) of the blade element (12).
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