Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21B - Fibrous raw materials or their mechanical treatment › D21B 1 - Fibrous raw materials or their mechanical treatment
Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805)
07/1984
07/17/1984US4460132 Pulper for producing paper pulp suspensions
07/17/1984US4460131 Comminution, screening, classification
07/17/1984CA1171047A1 Waste paper disintegrating, sorting and fiber recovery apparatus
07/10/1984US4458846 Apparatus and process for reclaiming wood from debris
07/10/1984US4458845 Defibering, wastes, paper, corrugation, containers, rotation, drums, apertures
07/03/1984US4457804 Apparatus for producing fiber pulp from fibrous lignocellulose containing material
06/1984
06/26/1984US4456503 Apparatus for manfacturing mechanical pulp
06/26/1984US4456182 Pulp grinder with liquid retention
06/26/1984CA1169603A1 Microbicidal/microbistatic compositions and use thereof
06/19/1984US4455237 High bulk pulp, filter media utilizing such pulp, related processes
06/19/1984US4455195 Fibrous filter media and process for producing same
06/19/1984CA1169285A1 Process for heating up wood chips prior to steaming and pulping
06/19/1984CA1169207A1 Method for defibrating waste paper and dispersing contaminants
06/07/1984WO1984002093A1 Chip sizing process
06/05/1984US4452694 Wood chips for paper pulp
05/1984
05/30/1984EP0109409A1 Method and device for manufacturing cellulose pulp
05/16/1984EP0108381A1 Wet-end molding method and molded product
05/01/1984US4445973 Method and device for the manufacture of mechanical pulp
04/1984
04/17/1984US4443296 Extraction, suspension, agitation
04/03/1984US4440635 Process and apparatus for the recovery of cellulose fibers from paper-plastic mixtures
03/1984
03/28/1984EP0103577A1 Process of producing fiberboard according to the wet method.
03/27/1984US4438851 Method and apparatus for the sorting out of plastic foils from a mixture of refuse
03/13/1984CA1163486A1 Chip bin blockage preventing
03/13/1984CA1163485A1 Pulp pit for a grinder
03/06/1984US4435249 Oxygen delignified to produce bleachable pulp
03/06/1984CA1163058A1 Method for obtaining superior yields of accessible cellulose and hemicellulose from lignocellulosic materials
02/1984
02/28/1984CA1162774A1 Wood grinding apparatus
02/28/1984CA1162773A1 Process for the control of a wood grinder
02/14/1984US4431482 Dispersion apparatus for the preparation of waste paper
01/1984
01/31/1984US4428534 Expansion
01/31/1984CA1161291A1 Segmental pulpstone
01/31/1984CA1161290A1 Roller type system, process and apparatus for pulp refining
01/24/1984CA1161011A1 Board sorter
01/11/1984EP0097716A1 High bulk pulp, filter media utilizing such pulp, related processes.
01/03/1984CA1159695A1 Process for manufacturing groundwood pulp while maintaining a high and uniform moisture content in the wood in the grinding zone
12/1983
12/28/1983EP0096952A2 Froth flotation apparatus and method
12/27/1983CA1159447A1 Stepped, axially fed, rotor and housing type continuous mixer
12/27/1983CA1159398A1 Buoyant separation means for rejects side of cylindrical screens
12/27/1983CA1159295A1 Device for production of mechanical pulp
12/27/1983CA1159294A1 Apparatus and method for defibering unconventional material
12/21/1983EP0096548A1 Two-stage chemical treatment of mechanical wood pulp
12/20/1983US4421595 Process for preparing thermomechanical pulp with heat recovery
12/20/1983CA1158905A1 Method and apparatus for the treatment of a cellulose- containing material
12/13/1983US4420117 Waste paper disintegrating, sorting and fiber recovery apparatus
12/06/1983CA1158088A1 Method and apparatus for grinding pulp stock in pulp defibrating apparatus of the double rotating disc type
11/1983
11/22/1983US4416727 Process for recovering fiber from wet-strength resin coated paper
11/22/1983US4416548 Apparatus for gas or liquid admixture
11/22/1983CA1157305A1 Method of improving the heat economy in a process of making groundwood
11/15/1983CA1156864A1 Processing of groundwood pulp to remove coarse particulate lignocellulosic material and apparatus
11/10/1983WO1983003856A1 Method and device for manufacturing cellulose pulp
11/08/1983US4413790 Mixer for bulk materials, especially for fibrous suspensions
11/08/1983US4413789 Rotor for a pulper
11/08/1983CA1156606A1 Plant for the recovery of cardboards from the commercial waste
10/1983
10/26/1983EP0092124A1 Process for preparing paper pulps from a random mixture of printed waste paper
10/26/1983EP0091982A2 Process and apparatus for separating cellulose flocks and their covers in cellulosic hygienic articles
10/25/1983CA1155695A1 Apparatus for reprocessing old paper
10/04/1983CA1154622A1 Control of bin steaming
10/04/1983CA1154621A1 Method for controlling a piston fed wood grinder
09/1983
09/27/1983US4406734 Method for the manufacture of mechanical pulp
09/21/1983EP0089106A2 Cut and mill fiberizer
09/20/1983US4405450 Method for fractionating fiber stock obtained from waste paper and apparatus for the performance of the aforesaid method
09/20/1983US4405091 Apparatus for the production of mechanical wood pulp
09/20/1983CA1153923A1 Method of cleaning the pulp pit of a wood grinding machine and a grinder for applying said method
09/13/1983CA1153601A1 Disk refiner
09/06/1983US4402463 Grinding apparatus for a suspension of fibres for paper manufacturing
08/1983
08/31/1983EP0086933A2 Method of regulating the consistency in a pulper
08/30/1983US4401510 Process for heating up wood chips prior to steaming and pulping
08/30/1983US4401280 Disc-type pulp refining apparatus
08/30/1983US4401277 Apparatus for producing mechanical wood pulp
08/30/1983CA1152792A1 Method and device for the manufacture of mechanical pulp
08/23/1983CA1152370A1 Method and device for the manufacture of mechanical pulp
08/18/1983WO1983002788A1 Method and apparatus for producing fibre pulp from fibrous lignocellulose containing material
08/16/1983US4399028 Froth flotation apparatus and method
08/16/1983CA1151928A1 Device for the production of groundwood
08/16/1983CA1151927A1 Device for the production of mechanical pulp
08/09/1983US4397713 Method of processing waste paper and installation for the performance of the method
08/03/1983EP0084917A2 Method for manufacture of an insulation panel and device embodying said method
08/02/1983US4396501 Wood chip screening and processing method and apparatus
08/02/1983US4396161 Disk refiner
08/02/1983US4396160 Pulp dissolver for the production of pulp suspensions
08/02/1983CA1150942A1 Cellulosic fiber insulation and process of preparation
07/1983
07/26/1983US4394977 Method for improving the utilization of heat energy produced in a wood grinding process
07/26/1983CA1150552A1 Method for mechanically raising the wood content of chipped wood material
07/26/1983CA1150551A1 Method and apparatus for gas or liquid admixture
07/21/1983WO1983002469A1 High bulk pulp, filter media utilizing such pulp, related processes
07/19/1983US4393983 Intermeshing screw-type refiner
07/19/1983CA1150010A1 Baled wastepaper product containing a deinking chemical
07/05/1983CA1149211A1 Woodstuff grinder
06/1983
06/22/1983EP0081539A1 A method and device for disintegrating coarse material.
06/15/1983EP0081380A2 Method and apparatus for centrifugal pulpwood and wood chip grinding
06/14/1983US4388148 Process for producing pulp
06/14/1983US4387856 Controlling separation of reject stock suspensions by measuring rotational resistance of the defibering rotor
06/14/1983CA1148004A1 Method and apparatus for continuously processing wood
06/01/1983EP0079927A1 A method for treating a fibrous material and a plant for carrying out the method
05/1983
05/31/1983US4385997 Method and apparatus for preconditioning laminated paper for recycling
05/25/1983EP0079336A1 Method and grinder for the manufacture of pulp.
05/24/1983US4384708 Feeding process for a defibrator
05/17/1983US4383889 Acrylic acid, polymer, inorganic polyphosphate
05/11/1983WO1983001637A1 Process of producing fiberboard according to the wet method
05/10/1983US4382559 Defibrator
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