D21B 1/26

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Class  D21B : FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT


Subclass 1/26: Fibrous raw materials or their mechanical treatment (beaters D21D 1/00) by dividing raw materials into small particles, e.g. fibres (breaking-up or cutting wood or the like by dry methods B27L; disintegrating peat C10F 7/02; obtaining fibres mechanically for spinning from rags, peat, or the like D01B) by wet methods, by the use of steam Disintegrating in mills (in general B02C) Driving or feeding arrangements

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12215459 Separation of fibersDec 18, 19Feb 04, 25CIRCULOSE AB
11440017 Steam evacuation in a pulp or fiber refinerFeb 08, 18Sep 13, 22Valmet AB
11208762 Method for separating fibersDec 15, 17Dec 28, 21REPULPING TECHNOLOGY GMBH & CO. KG
10683611 Method for simultaneously pressing and cutting a molded fiber partMar 25, 19Jun 16, 20Footprint International, LLC
10240286 Die press assembly for drying and cutting molded fiber partsMay 26, 17Mar 26, 19Footprint International, LLC
10106328 Plug screw feeder, feeder arrangement and system for treatment of lignocellulosic biomass materialAug 31, 15Oct 23, 18Valmet AB
9085850 Reversible low energy refiner platesMar 22, 13Jul 21, 15ANDRITZ INC.
8753476 Methods for producing high-freeness pulpSep 22, 11Jun 17, 14ANDRITZ TECHNOLOGY AND ASSET MANAGEMENT GMBH
8734611 Medium consistency refining method of pulp and systemFeb 19, 09May 27, 14ANDRITZ INC.
7758720 High defiberization pretreatment process for mechanical refiningNov 19, 07Jul 20, 10ANDRITZ INC.
7758721 Pulping process with high defiberization chip pretreatmentNov 19, 07Jul 20, 10ANDRITZ INC.

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