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)
04/1983
04/26/1983US4381217 Method of increasing the temperature of shower water used in a wood grinding process
04/26/1983CA1145177A1 Method of processing waste paper and installation for the performance of the method
04/12/1983US4379748 Method of separating paper and plastic pieces
04/06/1983EP0076216A2 Pulp refining apparatus and methods
04/05/1983CA1143913A1 Method for use in the defibration or refining of lignocellulose-containing fibrous materials
03/1983
03/29/1983US4378092 Method and apparatus for grinding pulp stock in pulp defibrating apparatus of the double rotating disc type
03/22/1983CA1143298A1 Vapour separating method and apparatus
03/22/1983CA1143200A1 Method for operating an installation for processing waste paper and installation for the performance of the aforesaid method
03/09/1983EP0073609A2 Rotary screening machine
03/08/1983US4376042 Chip sizing process
02/1983
02/22/1983US4374702 Microfibrillated cellulose
02/09/1983EP0063595A4 Process for producing a self-supporting moldable fiber mat.
02/08/1983US4372810 Method and device for manufacturing mechanical pulp
02/01/1983CA1140537A1 Flow mixer with multi-elbowed inlet diffuser
02/01/1983CA1140499A1 Disk screen, modular disk assembly and method
02/01/1983CA1140382A1 Process for producing fiberboard wherein dissolved wood matter is separated from the process water
02/01/1983CA1140305A1 Process for manufacturing bright and strong bleached groundwood pulp of uniform quality
01/1983
01/26/1983EP0070782A1 Method of making a cellulosic fibre pulp for non paperlike applications
01/18/1983US4369093 Pulping machine
01/11/1983US4368101 Series of flotation cells
01/04/1983CA1138697A1 Production of mechanical wood pulp
12/1982
12/28/1982US4365761 Apparatus and method for defibering unconventional material
12/28/1982CA1138241A1 Sealing arrangement for a shutter of a pressure grinder
12/23/1982WO1982004449A1 A method and device for desintegrating coarse material
12/21/1982CA1137802A1 Procedure for producing high yield pulp
12/09/1982WO1982004271A1 A method for treating a fibrous material and a plant for carrying out the method
12/07/1982CA1136912A1 Method and apparatus for efficiently producing cellulosic pulp by the thermo mechanical pulping method
12/01/1982EP0065749A1 Method for manufacturing a starting material suitable for further processing to absorbent products
11/1982
11/30/1982CA1136581A1 Apparatus for separating paper fibres from portions of polyethylene film material
11/03/1982EP0063595A1 Process for producing a self-supporting moldable fiber mat
11/02/1982US4357208 Lignocellulose, refining
11/02/1982CA1134567A1 Mixer and process
11/02/1982CA1134566A1 Treating pulp with oxygen
11/02/1982CA1134561A1 Treating pulp with oxygen
11/02/1982CA1134559A1 Treating pulp with oxygen
10/1982
10/27/1982EP0020600B1 Process for feeding a shredder with pulp supplied in bales
10/26/1982US4355767 Device in grinding apparatus
10/20/1982EP0062988A1 Paper pulper
10/12/1982CA1133222A1 Fiber separation from pulp sheet stacks
10/05/1982US4352431 Apparatus for sorting contaminant material from processing material
10/05/1982CA1132822A1 Method and apparatus in defibration
09/1982
09/21/1982US4350499 Vapor separating method and apparatus
09/14/1982US4349413 Injecting borax or boric acid into steam-softened wood chips prior to grinding into fibers; fireproofing
09/14/1982CA1131484A1 Process and improved installation for the production of paper making pulp
09/07/1982CA1130989A1 Process and apparatus for continuously conveying particulate compressible fibrous material
08/1982
08/31/1982US4347128 Flotation apparatus for de-inking pulp suspensions
08/31/1982US4347101 Process for producing newsprint
08/24/1982CA1130257A1 Crushing apparatus
07/1982
07/13/1982US4339206 Mixing apparatus for mixing a fluid fiber suspension with a treatment fluid suspension
07/13/1982US4339084 Pulp refining apparatus with adjustable treating gap
07/13/1982CA1127609A1 Waste pulping apparatus
07/13/1982CA1127356A1 Method and apparatus for preconditioning laminated paper for recycling
07/08/1982WO1982002219A1 Method and grinder for the manufacture of pulp
06/1982
06/30/1982EP0054754A2 Method of separating plastics materials from waste mixtures
06/16/1982EP0053626A1 Flotation cell
06/15/1982US4334984 Removal of zero fibers
06/08/1982US4333613 Apparatus for continuously grinding wood under pressure and continuously discharging groundwood
06/08/1982CA1125077A1 Procedure and apparatus for preparing groundwood mechanically from wood chips
06/01/1982US4332638 Method and apparatus for the recovery of a suspension of fibrous material from mixed waste paper
06/01/1982US4332353 Procedure for mechanically raising the wood content in wood chips
05/1982
05/25/1982US4331534 Method of and arrangement for the de-inking of pulp suspensions
05/18/1982CA1123554A1 High yield chemimechanical pulping processes
05/13/1982WO1982001507A1 Self-supporting moldable fiber mat and process for producing same
05/11/1982CA1123247A1 Method of feeding a defiberer
05/04/1982US4328095 Flotation cells
05/04/1982US4327870 Apparatus for continuously grinding wood under pressure and continuously discharging groundwood
04/1982
04/29/1982WO1982001326A1 Wood pulping apparatus
04/28/1982EP0050259A2 Method and device to separate plastics sheets from a mixture of refuse
04/27/1982US4326913 Method and apparatus in defibration
04/20/1982US4325642 Storage and homogenizing tank for kaolin suspensions
04/14/1982EP0049450A2 Mixer for bulk goods, especially for fibrous suspensions
04/13/1982US4324612 Process for the preparation of groundwood pulp
03/1982
03/30/1982CA1120758A1 Apparatus for processing waste paper
03/23/1982CA1120435A1 Hydrocyclone with macro outlet ports
03/23/1982CA1120301A1 Method for improving of paper pulp stock manufactured mechanically from wood
03/18/1982WO1982000838A1 A method for preheating wood chips
03/10/1982EP0046755A1 A method for controlling a piston feed wood grinder
03/02/1982US4317701 Pulper
02/1982
02/18/1982WO1982000449A1 Container
02/16/1982CA1118395A1 Grinders for comminuting hard and dirty recuperated wastes, particularly wastes impervious to water
01/1982
01/27/1982EP0044658A1 Improved method of increasing the accessibility of cellulosic material in lignocellulosic materials
01/26/1982US4312701 Method for defibrating waste paper and dispersing contaminants
01/19/1982US4311553 Method for use in the defibration or refining of lignocellulose-containing fibrous materials
01/13/1982EP0007957B1 An apparatus for defibrating and, at the same time, conditioning cellulosic material
01/12/1982US4310124 Mixer for viscous materials, for example for filter cake, pulp or the like
01/12/1982CA1116125A1 Rotating disc apparatus for selective sorting of material chips
12/1981
12/24/1981WO1981003625A1 Flotation cell
12/22/1981US4306975 Sieve apparatus containing a rotatable circular sieve
12/22/1981CA1114663A1 Process and apparatus for the continuous treatment of cellulosic materials
12/16/1981EP0041728A1 Flotation cell
12/15/1981US4305590 Sealing arrangement for a shutter of a pressure grinder
12/15/1981US4305507 Disposable diaper reclaiming apparatus
12/15/1981CA1114214A1 Procedure and means for preparing thermogroundwood
12/15/1981CA1114212A1 Arrangement for processing low grade collected waste paper
12/01/1981US4303501 Process for the continuous separation of discarded hygiene articles into their components
12/01/1981US4303470 Method and apparatus for mixing gases with a wood pulp slurry
11/1981
11/24/1981US4301974 Refining apparatus
11/24/1981US4301930 Disk screen, modular disk assembly and method
11/24/1981CA1112925A1 Refining apparatus
11/24/1981CA1112816A1 Method of producing peroxide bleached pulp
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