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)
09/1980
09/23/1980US4223847 Coaxial feeder
09/16/1980US4222863 Screening apparatus and method
09/16/1980US4222817 Method and apparatus for pulping and grading waste material
09/16/1980US4222531 Wood pulper with constant wood feed
09/09/1980US4221631 Disk refiner, steam withdrawal
09/09/1980US4221520 Apparatus for supplying wood fiber material to a pulp paper plant through a single off-loading station
09/09/1980CA1085209A1 Method for dry-defibration of chemical, chemi- mechanical and mechanical fiber pulp or mixtures thereof and fiber pulp bales for use in said method
09/02/1980CA1084885A1 Apparatus for the separation of plastic films from paper
09/02/1980CA1084752A1 Method of fibre separation
08/1980
08/26/1980US4219381 Method of treating waste paper for obtaining a stock suspension for the production of new paper and apparatus for the performance of the aforesaid method
08/20/1980EP0014448A1 Process and apparatus for deinking fibrous suspensions
08/20/1980EP0014199A1 Method and apparatus for disintegration of fibrous material
08/19/1980US4217917 Chip washer
08/19/1980CA1083871A1 Apparatus for pulping waste paper materials
08/12/1980US4217169 Molding, compaction
08/12/1980US4216918 Fiberizer
08/12/1980CA1083395A1 Stock pulper installation having a stock pulper for pulping and sorting waste paper
07/1980
07/29/1980US4214982 Process and device for removing printer's ink from a fiber suspension
07/29/1980US4214947 Delignification
07/22/1980CA1082021A1 Apparatus for defibrating and conditioning nonflowable cellulosic material
07/15/1980CA1081515A1 Process for producing stone groundwood pulp from wood chips by using a stone grinder
07/15/1980CA1081502A1 Method for improved control of wood pulp grinding machine
07/08/1980US4211605 Treatment with fulfur dioxide, sulfonation, difibering
06/1980
06/26/1980WO1980001290A1 Supply process of a disintegrator
06/24/1980US4209362 Apparatus for conveying and processing strip material, especially paper trim
06/24/1980CA1080016A1 Process for producing a uniform fiber dispersion
06/17/1980US4207986 Apparatus for separating plastic film from paper particularly adapted for use in waste recycling systems
06/17/1980CA1079559A1 Method and apparatus for production of cellulose pulp
06/11/1980EP0011765A1 Mixer for thick materials, for example filter cakes, slurries or the like, and its use
06/10/1980US4207177 Material sorter
06/10/1980US4207140 Method of producing groundwood pulp
06/10/1980US4207139 Grinding under superatmospheric pressure and heat
06/10/1980US4207007 Liquid-stirring device and installation for treating loose materials
06/03/1980CA1078558A1 Process for producing bleached mechanical pulp having high strength and brightness and with low discharge of oxygen consuming substances
06/03/1980CA1078557A1 Method and apparatus for recovering fibres from fibrous material
05/1980
05/27/1980US4204906 Method of separating fusible plastics from solid waste
05/27/1980CA1078351A1 Paper sorting method and apparatus
05/27/1980CA1078237A1 Infeed tube for disc refiners
05/20/1980CA1077862A1 Removing of bark fines from aqueous suspensions
05/15/1980WO1980000924A1 Pulverization of natural fibers by direct pressure
05/13/1980US4202505 Refiner
05/06/1980CA1076866A1 Infeed disc for disc-type refiners
04/1980
04/29/1980US4200486 Sorting by cyclone separators and screens
04/29/1980US4200239 Machine that quadrates documents
04/22/1980US4199114 Apparatus for producing disintegrated material, preferably pulp
04/22/1980US4199110 Process and apparatus for disintegrating waste paper while separating metallic particulate material present in the paper
04/22/1980US4198799 Apparatus for making exploded cellulosic fiber insulation
04/22/1980CA1075857A1 Chemical pretreatment of wood prior to making refiner groundwood
04/16/1980EP0009483A1 Method of making pulp
04/15/1980CA1075661A1 Method and apparatus for separating fibers from a stack of fibrous sheets
04/01/1980CA1074608A1 Method of producing groundwood pulp
04/01/1980CA1074607A1 Method for producing groundwood pulp
04/01/1980CA1074606A1 Method and apparatus for thermo-mechanical pulping
03/1980
03/25/1980US4194968 Method and apparatus for separating magnetic particles from waste paper
03/25/1980CA1074069A1 Compression screw acting as an extruder for lignocellulose fibrous material
03/20/1980WO1980000423A1 Method and device for cleaning suspension fibres
03/18/1980US4193838 Removal of thermoplastic resin coatings from paperboard with halogenated hydrocarbon vapors
03/18/1980US4193169 Method of stripping pulp bales and a machine therefor
03/11/1980CA1073162A1 Process for treating mechanical pulps and/or products prepared therefrom
03/04/1980US4191338 Infeed disc for disc-type refiners
03/04/1980US4191335 Dry refining process and apparatus
02/1980
02/26/1980US4190522 Apparatus for purifying a suspension of fibrous material
02/26/1980CA1072308A1 Method of manufacturing comminuting discs for wood pulp refining machines
02/20/1980EP0007957A1 An apparatus for defibrating and, at the same time, conditioning cellulosic material.
02/12/1980US4188259 Recovery of fibre from laminated carton boards
02/05/1980US4187143 Polytrimellitimides, shearing in solvent and nonsolvent
02/05/1980US4187141 Difibering, impregnation with a base, compression
02/05/1980CA1070907A1 Process for manufacturing chemimechanical cellulose pulp in a high yield within the range from 65 to 95%
01/1980
01/29/1980US4185680 Process for producing useful concentrated slurries from waste material
01/15/1980US4183146 Sulfonation, papermaking
01/08/1980CA1069362A1 Pulping apparatus for liquid slurry stock
01/01/1980CA1068960A Device for evacuating blow back steam in pulp refining apparatus
01/01/1980CA1068959A Apparatus for pulping and grading waste material
11/1979
11/29/1979WO1979001002A1 Pulp refining apparatus with adjustable treating gap
11/29/1979WO1979001001A1 Intermeshing screw-type refiner
11/27/1979US4176054 Magnetic adhesive
11/27/1979US4175709 Method and apparatus for separating fibers from agglomerated masses thereof
11/20/1979CA1066697A1 Method of producing cellulose
11/13/1979US4174075 Apparatus for processing waste material chiefly composed of paper and plastic film
11/06/1979CA1065663A1 Method and apparatus for producing fiber pulp from fibrous lignocellulose containing material
10/1979
10/23/1979CA1064747A1 Device in grinding apparatus
10/18/1979WO1979000789A1 Method and apparatus for disintegration of fibrous material
10/16/1979US4171165 Cellulose insulation storage bin with improved debridger
10/02/1979CA1063407A1 Method and apparatus for minimizing steam consumption in the production of pulp for fiberboard and the like
10/02/1979CA1063406A1 Method and apparatus for producing fiber pulp in a steam-pressurized grinding apparatus
10/02/1979CA1063405A1 Apparatus for producing wood pulp from lignocellulose-containing material
09/1979
09/25/1979CA1063081A1 Material disintegrating-and-blowing apparatus
09/18/1979US4168199 Recovery of cellulosic fibres from foil laminated materials
09/11/1979US4167438 Method and apparatus for preparing and cleaning fibrous material
09/11/1979US4167249 Stock pulper for pulping and sorting waste paper
09/11/1979CA1062062A1 Paper stock rotor axial position controlling and locking device
09/06/1979WO1979000634A1 Method of making pulp
08/1979
08/07/1979US4163687 Method and apparatus for explosively defibrating cellulosic fiber
08/07/1979US4163525 Device for evacuating blow-back steam in pulp refining apparatus
07/1979
07/31/1979US4162768 Apparatus for separating paper fibres from portions of polyethylene film material
07/31/1979CA1059359A1 Treatment of waste paper and similar materials
07/31/1979CA1059358A1 Stock pulper
07/31/1979CA1059357A1 Fiberizer
07/25/1979EP0003018A1 Method and apparatus for loading a bale into a fluff generator
07/24/1979CA1058819A1 Method of stripping pulp bales and a machine therefor
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