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