| Patents for D21B 1 - Fibrous raw materials or their mechanical treatment (6,805) |
|---|
| 07/15/1987 | EP0228396A1 Arrangement for the flocculation of flocculable substances, particularly for the purification of effluents from deinking installations for used paper processing. |
| 07/14/1987 | US4680088 Process for removing ink particles from paper products |
| 07/07/1987 | US4678127 Pumped flow attrition disk zone |
| 06/16/1987 | US4673136 Apparatus for the dry defibration of sheets of fibrous cellulose material and like materials |
| 06/16/1987 | US4673013 Woodroom effluent treatment system |
| 06/02/1987 | US4669166 Electric lathe |
| 05/26/1987 | US4668339 Process for dry deinking of secondary fiber sources |
| 05/21/1987 | WO1987003022A1 Method of making mechanical pulp |
| 05/19/1987 | US4666093 Frame construction for a pressure grinding machine of press type |
| 05/12/1987 | US4664323 Method of and a feeding device for feeding a wood batch into a pressure grinder |
| 05/12/1987 | US4664320 Apparatus for separating the components of cellulose sanitary articles |
| 05/12/1987 | CA1221503A1 Method and apparatus for deinking |
| 05/06/1987 | EP0220266A1 Manufacture of mechanical pulp |
| 04/28/1987 | US4660726 For separation by size |
| 04/22/1987 | EP0218738A1 Process for pulping fibrous material, particularly a mixture of waste paper, and a drum for carrying out such a process |
| 04/21/1987 | US4658965 Wood chip classification apparatus |
| 04/14/1987 | US4657636 High density pulp screening apparatus |
| 04/07/1987 | US4655406 Apparatus for treating cellulose pulp with intermeshing disks and asymmetrical guide fins |
| 03/26/1987 | WO1987001746A1 Method of pretreating pulp with stabilizers and peroxide prior to mechanical refining |
| 03/26/1987 | WO1987001624A1 Drum screen |
| 03/17/1987 | US4650127 Method and apparatus for fiberizing fibrous sheets |
| 03/17/1987 | US4650125 Method for sorting fiber stock, especially for manufacturing paper, and sorting apparatus for the performance of such method |
| 03/12/1987 | WO1987001402A1 Method for producing of cellulosic pulp |
| 03/04/1987 | EP0211834A1 Aeration installation. |
| 03/03/1987 | US4646979 Apparatus for cleaning fibrous suspensions |
| 02/25/1987 | EP0211739A1 Process and apparatus for preparing and the primary sorting of paper pulp |
| 02/25/1987 | EP0211184A1 Apparatus for disposing of a pulper |
| 02/10/1987 | US4641790 System for wastepaper processing using a wash filter |
| 02/05/1987 | DE3527389A1 Process for treating waste paper, in particular cardboard |
| 02/04/1987 | CN86203238U Cotton stalk cut-off and fragmenting combine |
| 01/15/1987 | WO1987000220A1 Arrangement for the flocculation of flocculable substances, particularly for the purification of effluents from deinking installations for used paper processing |
| 01/13/1987 | US4635859 Grinding wood chips |
| 01/06/1987 | US4634498 Method for the production of high density fiberboard |
| 01/06/1987 | US4634059 Method and device for emptying suspension from a pulper |
| 01/02/1987 | DE3525788A1 Method and arrangement for controlling the addition of chemicals for flocculating flocculable substances in suspensions, especially for purifying the backwater of de-inking installations |
| 12/30/1986 | US4632320 Apparatus for dissolving and sorting waste paper |
| 12/30/1986 | US4632317 Method and device for disintegrating coarse material |
| 12/24/1986 | CN86101241A Method and equipment for smashing fiber scrap into fiber |
| 12/16/1986 | CA1215258A1 Bi-directional rotor and stator in a vortical circulation |
| 12/02/1986 | US4625926 Multiple disk refiner with elastomeric mounting |
| 11/26/1986 | EP0202237A1 A process for manufacturing a liquid absorbing pad, in particular for use in soft hygiene articles and sanitary products. |
| 11/25/1986 | CA1214579A1 Apparatus for removal by flotation of solid particles from liquid |
| 11/20/1986 | WO1986006770A1 Method at the manufacture of mechanical pulp |
| 11/20/1986 | WO1986006769A1 Manufacture of mechanical pulp |
| 11/12/1986 | CA1213768A Wet-end molding method and molded product |
| 11/11/1986 | US4622099 Method and apparatus for manufacturing paper and boards |
| 11/04/1986 | US4620926 Flotation apparatus for flotation of fibrous stock suspension recovered from waste paper |
| 11/04/1986 | US4620675 Composite flexible pulp refiner disk |
| 11/04/1986 | US4620671 Rotary blade to generate turbulent flow |
| 10/28/1986 | US4619736 Apparatus for defiberizing, screening and pumping cellulose pulp or recycled paper |
| 10/22/1986 | EP0198737A1 Apparatus for the decontamination of paper pulp |
| 10/14/1986 | US4616785 Method of and apparatus for debarking wood chips |
| 10/14/1986 | CA1212505A1 Method, process and apparatus for converting wood, wood residue and or biomass into pulp |
| 10/07/1986 | US4615767 Process for removing ink-bearing fines from dry-deinked secondary fiber sources |
| 10/07/1986 | US4615492 Pulping apparatus |
| 09/30/1986 | US4614304 Rotor/mixer for controlling mixing and refining of pulp material |
| 09/17/1986 | EP0194982A2 A method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a two-stage impregnation process |
| 09/17/1986 | EP0194981A2 A method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a one-stage impregnation process |
| 09/17/1986 | EP0194332A1 Process and apparatus for sorting a fibre suspension |
| 09/16/1986 | US4612088 Size reduction of solids in suspension; paper pulp |
| 09/09/1986 | CA1210980A1 Method of controlling a grinding process in a pocket grinder |
| 09/02/1986 | CA1210744A1 Offset orbit fluff generator |
| 08/26/1986 | US4608108 Pressure molding a wet mat of mineral fibers to form a decorative textured surface |
| 08/26/1986 | US4607802 Turbines for fiber separation |
| 08/19/1986 | US4606789 Method for manufacturing cellulose pulp using plural refining and fiber separation steps with reject recycling |
| 08/19/1986 | US4606504 Pressure-assisted centrifugal grinding |
| 08/19/1986 | US4606494 Method of welding discs to a split hub assembly |
| 08/13/1986 | EP0190634A2 Method and apparatus for fiberizing fibrous sheets |
| 08/13/1986 | EP0190130A1 Device at flotation of fibre suspensions. |
| 08/05/1986 | US4604193 Recycling |
| 07/30/1986 | EP0189379A1 Kneader for paper products and/or similar waste products |
| 07/30/1986 | EP0189104A1 A separating apparatus |
| 07/23/1986 | EP0187909A1 Process and apparatus for eliminating impurities from a waste paper suspension |
| 07/23/1986 | EP0113353B1 Method and apparatus for producing fibre pulp from fibrous lignocellulose containing material |
| 07/22/1986 | US4601819 Higher consistency fiber stock |
| 07/17/1986 | EP0097716A4 High bulk pulp, filter media utilizing such pulp, related processes. |
| 07/15/1986 | US4600475 Refining apparatus with radial passageways for steam recovery |
| 07/09/1986 | EP0186738A2 Sorting apparatus for fibre suspensions |
| 07/08/1986 | US4599138 Process for pretreating particulate lignocellulosic material to remove heavy metals |
| 06/19/1986 | WO1986003530A1 Rotor/mixer for controlling mixing and refining of pulp material |
| 06/17/1986 | US4595150 Blocking slab for pulp grinder |
| 06/10/1986 | US4593861 Apparatus for pulping paper making stock at high consistencies |
| 06/10/1986 | CN85107699A Multiple disk refiner with elastomeric mounting |
| 06/03/1986 | US4592804 Method for pre-treating lignocellulosic material in two steaming zones |
| 06/03/1986 | US4592513 Pressureless arrangement for disintegrating a water paper suspension |
| 05/14/1986 | EP0181279A2 Multiple disk refiner with elastomeric mounting |
| 05/14/1986 | EP0181028A2 Apparatus and process for producing raw of bleached chemimechanical wood pulps by a continuous impregnation process |
| 05/14/1986 | EP0180696A1 Apparatus for the separation of waste |
| 05/06/1986 | US4586665 Apparatus for treating cellulose pulp with adjustable treating gap |
| 04/10/1986 | WO1986002116A1 A process for manufacturing a liquid absorbing pad, in particular for use in soft hygiene articles and sanitary products |
| 04/10/1986 | CN85106049A Power saving pulp beater |
| 04/02/1986 | EP0175991A1 Method for producing high-yield paper-making pulp |
| 03/26/1986 | EP0175128A1 Process and apparatus for preparing paper stock |
| 03/25/1986 | US4578148 Process for manufacturing bright and strong bleached groundwood pulp of uniform quality |
| 03/25/1986 | US4578147 Process for manufacturing groundwood pulp while maintaining a high and uniform moisture content in the wood in the grinding zone |
| 03/13/1986 | WO1986001434A1 Combined hydrostatic/hydrodynamic bearing system for grinding apparatus |
| 03/10/1986 | CN85107075A Process for manufacturing soft hygiene articles and sanitary products |
| 03/05/1986 | EP0079336B1 Method and grinder for the manufacture of pulp |
| 02/19/1986 | EP0172135A1 Method, process and apparatus for converting wood, wood residue, vegetable fibre and biomass into pulp |
| 02/18/1986 | US4570861 Method of and arrangement for electrostatic separation of paper- and synthetic plastic material-containing mixtures |