| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
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| 06/24/1998 | EP0849393A1 Waste dissolver, in particular from biological domestic waste |
| 06/23/1998 | US5770050 Flotation apparatus |
| 06/23/1998 | US5769330 Spouted bed wood chip debarker/cleaner |
| 06/18/1998 | WO1998026128A1 Method for storing and transporting cellulosic and process for manufacturing pulp |
| 06/10/1998 | CN1184182A Clean papermaking process |
| 06/09/1998 | US5762758 Method of papermaking having zero liquid discharge |
| 06/09/1998 | US5762756 Simultaneously pulping waste paper and dispersing ink particles therefrom in high solids aqueous mixture |
| 06/09/1998 | CA2224031A1 Process for preparing cellulosic fibrous aggregates |
| 06/04/1998 | WO1998023813A1 Method of making sanitary paper products from recycled newspapers |
| 06/04/1998 | CA2270424A1 Method of making sanitary paper products from recycled newspapers |
| 06/02/1998 | US5759704 Easily biodegradable composite and decorative paper product used the same |
| 06/02/1998 | US5759350 Positioning elongated spools of paper, slabbing paper, cutting and detection and displacement |
| 05/27/1998 | CN1182816A Machine for cutting paper into pieces capable of separating waste paper and coated film |
| 05/20/1998 | CN1182148A Digestion-less and sieving-free chemical pulp-making method producing no nuisance |
| 05/13/1998 | CN1181795A Process for recovering raw materials from a flow of residual or collected materials during paper manufacture and plant therefor |
| 05/06/1998 | CN1038250C Method for making grass fibre film for food packing |
| 05/05/1998 | US5746890 Device for admixing a processing agent into a pulp suspension |
| 05/05/1998 | CA2101705C Method and apparatus for removing plastic from wood chips |
| 04/30/1998 | WO1998017404A1 Air density system with air recirculation and gyrating bar feeder |
| 04/30/1998 | WO1998017393A1 Pulping apparatus |
| 04/29/1998 | EP0683693B1 Method and apparatus for separation by flotation |
| 04/29/1998 | CN2280005Y Screw baling compression machine |
| 04/22/1998 | EP0682727B1 A method for the production of plastic formed products containing cellulose fibres from straw and an intermediate moulding composition therefor |
| 04/16/1998 | WO1998015686A1 Separation of solids from aqueous suspensions |
| 04/16/1998 | CA2267250A1 Separation of solids from aqueous suspensions |
| 04/15/1998 | CN2278710Y High-concentration high-efficiency pulping and fluffer |
| 04/15/1998 | CN2278709Y Automatic sand discharger for dissociation sand remover |
| 04/15/1998 | CN2278526Y Paper disintegrator capable of separating coated film from waste paper |
| 04/15/1998 | CN1179188A Method and device for process control in cellulose and/or paper manufacture |
| 04/09/1998 | DE19641911C1 Recovery of valuable materials from e.g. fast food packages containing plastic, paper and food residues |
| 04/08/1998 | EP0833981A1 Method and apparatus for mechanical defibration of wood |
| 04/07/1998 | US5735472 Rotating drum comprising screening and mashing chambers for separating paper fibers and contaminants |
| 04/01/1998 | CN1037918C Improvement in raw material processing method and apparatus using said method |
| 03/31/1998 | US5733413 Method for removing contaminates from aqueous paper pulp |
| 03/31/1998 | CA2133630C Method and apparatus for screening waste paper pulp |
| 03/26/1998 | WO1998012307A1 Cellulase variants |
| 03/26/1998 | WO1998011973A2 Process for producing workpieces and molded pieces out of cellulose and/or cellulose-containing fiber material |
| 03/26/1998 | CA2237942A1 Process for producing workpieces and molded pieces out of cellulose and/or cellulose-containing fiber material |
| 03/25/1998 | EP0830476A1 Disc refiner with conical ribbon feeder |
| 03/25/1998 | EP0821749A4 Method for co-refining dry urban wood chips and blends of dry urban wood chips and thermoplastic resins for the production of high quality fiberboard products |
| 03/24/1998 | US5730376 Apparatus for regulated dispersion treatment of highly consistent fibrous substances |
| 03/24/1998 | US5730371 Delumper |
| 03/19/1998 | DE19637031A1 Recovery process for fibrous and plastic materials from rejects from pulpers |
| 03/18/1998 | EP0829571A1 Process for recovery of fibres from rejects from pulping disposal systems |
| 03/17/1998 | US5728270 From waste paper |
| 03/17/1998 | US5728266 Crushing by rolling coconut shells, mixing with water with blades, reservoirs, binding, bleaching and coloring |
| 03/17/1998 | US5727743 Device and treatment machine for the mechanical treatment of high-consistency fibrous material |
| 03/11/1998 | EP0828025A2 Improvements in valves |
| 03/11/1998 | EP0711368A4 Recycle processing of baled waste material |
| 03/05/1998 | WO1998008610A1 A process for purification of a fibre suspension |
| 03/05/1998 | CA2264185A1 A process for purification of a fibre suspension |
| 03/04/1998 | EP0826471A2 Process for the treatment of fibreboard wastes |
| 02/25/1998 | CN2275109Y Assistant dissolring charging device for paper making |
| 02/17/1998 | US5718837 Mixture containing a persulfate and a carbonate, bicarbonate or a sesquicarboante |
| 02/17/1998 | US5718802 Process for obtaining cellulosic fiber bundles at least 2.5 cm long from plant stalk rind |
| 02/17/1998 | US5718801 Using nonionic surfactants |
| 02/05/1998 | WO1998004774A1 Method and apparatus for bleaching wood pulp, especially containing waste paper |
| 02/05/1998 | CA2260935A1 Method and apparatus for bleaching wood pulp, especially containing waste paper |
| 02/04/1998 | EP0821749A1 Method for co-refining dry urban wood chips and blends of dry urban wood chips and thermoplastic resins for the production of high quality fiberboard products |
| 02/03/1998 | US5714040 Method for recovering fiber from printed wastepaper |
| 01/28/1998 | EP0820354A1 Wood chip screening apparatus with blades having nonlinear top edges |
| 01/21/1998 | CN2272908Y Hydraulic high-concentration pulper |
| 01/20/1998 | US5709257 Removing bark from wood chips |
| 01/14/1998 | EP0735918B1 Device for admixing a processing agent to a pulp suspension |
| 01/14/1998 | EP0728237B1 A method and an apparatus for production of a fibrous material containing curled fibers |
| 01/14/1998 | EP0728236B1 Defibrator having improved defibration |
| 01/13/1998 | US5707489 Pulping wast paper, slurrying, thickening, filtration then cleaning to remove impurities |
| 01/13/1998 | US5707019 Refiner with easily attachable discs |
| 01/07/1998 | EP0815315A2 Method and device for process control in cellulose and paper manufacture |
| 01/07/1998 | EP0791098A4 Apparatus for fluffing pulp |
| 01/07/1998 | EP0750698A4 Apparatus for fluffing high consistency wood pulp |
| 01/07/1998 | EP0689625B1 Pitch degradation with white rot fungi |
| 01/07/1998 | CN1169760A Apparatus for fluffing pulp |
| 01/06/1998 | US5705383 Inoculating log with schizophyllum, trichaptum and/or phanerochaete fungi; conserves electricity |
| 01/06/1998 | CA2113737C Method and device for processing wastepaper |
| 01/02/1998 | DE19625378A1 Process for pulping waterproof papers, especially recycled labels |
| 12/31/1997 | WO1997049857A1 A method for the control of a groundwood pulping process |
| 12/31/1997 | WO1997049494A1 A method and an apparatus for recycling different components in a multiple layer material |
| 12/31/1997 | CA2294424A1 A method for the control of a groundwood pulping process |
| 12/31/1997 | CA2258968A1 A method and an apparatus for recycling different components in a multiple layer material |
| 12/29/1997 | EP0814192A1 Method and arrangement for treatment of reject material |
| 12/29/1997 | EP0813631A1 Method and apparatus for treating filler-containing material such as recycled fibers |
| 12/29/1997 | EP0665910B1 Mixing device in pulping |
| 12/24/1997 | WO1997048493A1 Pulp decontamination apparatus and method of use |
| 12/17/1997 | EP0813063A1 Method of controlling equipment for deinking paper pulp, and device for continuously measuring the quantity of particles in a liquid |
| 12/17/1997 | EP0812950A1 Method and apparatus for defibering and screening recycled fibre material |
| 12/17/1997 | EP0812616A1 Device for disaggregating materials |
| 12/17/1997 | CA2207979A1 Method and arrangement for treatment of reject material |
| 12/16/1997 | CA2098092C Method of treatment of waste paper of the like |
| 12/12/1997 | CA2207352A1 Method and apparatus for defibering and screening recycled fibre material |
| 12/11/1997 | WO1997046309A1 Method and apparatus for mixing a second medium with a first medium |
| 12/10/1997 | EP0811089A1 System and method for recycling materials |
| 12/10/1997 | CN2270070Y High-energy crushing pulping machine |
| 12/09/1997 | US5695135 Refiner with easily attachable disc |
| 12/03/1997 | EP0809731A1 Process for recovering raw materials from a flow of residual or collected materials during paper manufacture and plant therefor |
| 12/03/1997 | EP0683831B1 A method to separate cellulose based fibers from each other in water |
| 12/03/1997 | CN2269415Y Floatation and ink removing machine for waste paper |
| 11/27/1997 | WO1997044185A1 Apparatus for pulping and deinking |
| 11/27/1997 | CA2253520A1 Apparatus for pulping and deinking |
| 11/25/1997 | US5691636 Probe assembly mounting for a grinding machine |