| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
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| 06/28/1979 | WO1979000375A1 Method of treating a bulk material and apparatus for carrying out the method |
| 06/28/1979 | WO1979000345A1 An apparatus for defibrating and,at the same time,conditioning cellulosic material |
| 06/26/1979 | CA1057087A1 Lining element for pulp refiners |
| 06/19/1979 | CA1056559A1 Process of freeing cellulose fibers from lignocellulosic material |
| 06/05/1979 | CA1055755A1 Process and apparatus for the manufacture of pulp |
| 05/30/1979 | EP0002122A1 Method and apparatus for separating paper and fibres from portions of polyethylene film material |
| 05/29/1979 | USRE30011 Defibering apparatus for paper making stock |
| 05/29/1979 | CA1055291A1 Method of treating ligno-cellulose containing material |
| 05/22/1979 | US4155839 Reverse centrifugal cleaning of paper making stock |
| 05/15/1979 | CA1054496A1 Method of treating refining segments |
| 05/15/1979 | CA1054415A1 Device for refining fibrous material |
| 05/08/1979 | US4153207 Plant for the continuous production of paper-pulp from solid urban waste |
| 05/01/1979 | US4152317 Process for improving the water wettability of polyolefins |
| 04/24/1979 | CA1053049A1 Grinding apparatus |
| 04/10/1979 | US4148952 Ligninsulfonate binder |
| 04/10/1979 | CA1052156A1 Pulp |
| 04/03/1979 | US4147616 Apparatus for deinking printed wastepapers |
| 04/03/1979 | CA1051618A1 Method of producing high yield chemimechanical pulps |
| 03/27/1979 | US4146183 Pressed pulp bale shredder |
| 03/27/1979 | CA1051246A1 Method of producing mechanical pulp |
| 03/27/1979 | CA1051151A1 Apparatus and process for producing kraft type pulp |
| 03/20/1979 | US4145007 Comminution to reduce particle size, separation of particles which includes fibrous material, cutting to further reduce size, reducing moisture |
| 02/27/1979 | US4141509 Bale loader for fluff generator |
| 02/20/1979 | US4140281 Using a cylindrical separator having a perforated wall |
| 02/20/1979 | CA1048832A1 Mechanical fluffed pulp and method of producing the same |
| 02/06/1979 | US4138315 Production of paper sheets, boards and pulp molded articles from fibrids from the constituents of the effluent obtained in the manufacture of styrene bead polymers |
| 01/30/1979 | US4136831 Method and apparatus for minimizing steam consumption in the production of pulp for fiberboard and the like |
| 01/23/1979 | US4136018 Vortex separator with coaxial inlet and lightweight reject pipelines |
| 01/23/1979 | US4135671 Stock pulper |
| 01/16/1979 | US4134554 Grinder cylinder control for waste paper grinder |
| 01/09/1979 | CA1046008A1 Waste material handling system |
| 01/09/1979 | CA1045866A1 Bonding properties of mechanical pulps |
| 01/09/1979 | CA1045865A1 Vented disc refiner |
| 01/02/1979 | US4132366 Infeed tube for disc refiners |
| 12/26/1978 | CA1044932A1 Chip washer |
| 12/19/1978 | CA1044501A1 Method and apparatus for producing defibrated cellulose fluff from bales of compacted wood pulp sheets |
| 12/12/1978 | US4129263 Device for refining fibrous material |
| 12/12/1978 | US4129259 Apparatus for pulping waste paper materials |
| 11/28/1978 | US4127476 Air-classification apparatus and process for the segregation of mixed office-paper waste |
| 11/07/1978 | US4124168 Paper sorting method |
| 10/31/1978 | US4123489 Cutting, extrusion |
| 10/31/1978 | CA1041406A1 Compact fibre material shredding machine_ |
| 10/24/1978 | US4121967 Screw conveyor in pulp-making equipment |
| 10/24/1978 | CA1040912A1 Method and apparatus for the treatment of waste wood, such as stumps and snag, to make it suitable for the production of paper pulp |
| 09/26/1978 | US4116758 Sulfonation of lignocellulose |
| 08/29/1978 | USRE29746 Apparatus for pulping waste paper materials |
| 08/29/1978 | US4109872 Pulping apparatus for liquid slurry stock |
| 08/15/1978 | US4106979 Preparation of paper pulps from dicotyledonous plants |
| 07/04/1978 | US4098395 Feeding device especially for pulp bales |
| 06/13/1978 | US4094772 Method of and apparatus for sorting light refuse fractions |
| 05/23/1978 | US4090672 Grinding apparatus |
| 05/09/1978 | US4088528 Method and apparatus for grinding chips into paper pulp |
| 05/02/1978 | US4087317 Defiberizing lignocellulose |
| 04/18/1978 | US4084753 Apparatus for the preparation of insulating material |
| 04/11/1978 | US4083503 Paper stock rotor axial position controlling and locking device |
| 01/17/1978 | US4068805 Shredding machine |
| 12/27/1977 | US4065347 Method of producing fluffed pulp |
| 12/27/1977 | US4064599 Fiberizing method and apparatus employing differential feed system |
| 10/04/1977 | US4052009 Fibering system and apparatus |
| 09/27/1977 | US4050980 Selective delamination of wood chips |
| 08/30/1977 | US4045243 Removing wax-carbon coating from carbon paper by sequential immersion in hot aqueous baths |
| 08/16/1977 | US4042180 Feeding and rationing equipment for mechanical wood pulp, production waste and equivalent |
| 08/09/1977 | US4040899 Production of high strength packaging papers from straw |
| 07/26/1977 | US4037792 Continuously refining raw fibrous material to produce mechanical refiner pulp |
| 07/19/1977 | US4036440 Method and apparatus for the treatment of waste wood, such as stumps and snag, to make it suitable for the production of paper pulp |
| 07/19/1977 | US4036359 Baled wood chips |
| 06/28/1977 | US4032446 Food disposer |
| 06/21/1977 | US4030865 Apparatus for simultaneous defiberization of waste paper stock and uniform dispersion and accumulation of the defiberized fine fiber stock for dry web formation |
| 06/21/1977 | US4030671 Apparatus for pulping waste paper materials |
| 06/14/1977 | US4029543 Mechanically freeing wood fibers in the presence of spent peroxide bleaching liquor |
| 05/17/1977 | US4023739 Lining element for pulp refiners |
| 05/10/1977 | US4022231 Chip washer |
| 04/19/1977 | US4018394 Shredding machine for fibrous materials |
| 04/12/1977 | US4017356 Apparatus and method for manufacturing wood pulp by grinding wood block material |
| 04/12/1977 | US4017033 Apparatus and method for reclaiming waste papers |
| 03/29/1977 | US4014788 Removing of bark fines from aqueous suspensions |
| 03/15/1977 | US4012279 Process of producing pulp, for manufacture of fiberboard, in a closed backwater system |
| 03/08/1977 | US4011150 Method of treating refining segments |
| 03/01/1977 | US4009835 Continuous, from wood chips |
| 02/01/1977 | US4006006 Anticaking, magnesium and calcium ammonium phosphate |
| 01/11/1977 | US4002528 Apparatus for processing pulp |
| 12/28/1976 | US4000032 Process of freeing cellulose fibers from lignocellulosic material by irradiation |
| 12/28/1976 | US4000031 Method and apparatus for recovery of plastics and non-plastics from plastic-coated waste material |
| 11/30/1976 | US3994770 Shredding, digestion, flotation |
| 11/09/1976 | US3990643 Method of pulping and grading waste paper |
| 11/02/1976 | US3989588 Apparatus for producing kraft type pulp |
| 11/02/1976 | US3989197 Apparatus for pulping and grading of waste paper |
| 10/26/1976 | US3987968 Flow-through moist pulp fiberizing device |
| 10/19/1976 | US3986676 Device for disintegrating material such as paper |
| 09/21/1976 | US3981453 Method for segregating bark and foliage from wood chips and twigs |
| 07/06/1976 | US3967785 Method and apparatus for producing defibrated cellulose fluff from bales of compacted wood pulp sheets |
| 06/22/1976 | US3964961 Method for storing bagasse |
| 06/01/1976 | US3960332 Defibering apparatus for paper making stock |
| 05/18/1976 | US3957572 Process for the manufacture of paper pulp from waste paper |
| 04/13/1976 | US3950473 Process for producing synthetic pulp from a film of a mixture of polypropylene and low density polyethylene |
| 04/06/1976 | US3949036 Stable blocks formed of shredded paper-like material |
| 03/30/1976 | US3947314 Method of treating paper fibers in a stationary screen |
| 03/30/1976 | US3946951 Attrition pulper having high level thrust for grinding pulp and refining fibres |
| 03/23/1976 | US3945576 Stock pulper |
| 03/09/1976 | US3943034 Dewatering and homogenizing apparatus |