| Patents for D21F 9 - Complete machines for making continuous webs of paper (2,705) |
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| 03/13/1991 | EP0416219A1 Foil blade for the forming section of a papermaking machine |
| 03/12/1991 | US4999088 No-box system with booster head spray for delivering paper stock to a paper machine |
| 03/12/1991 | US4999087 Twin wire forming apparatus with positive pressure foils |
| 03/03/1991 | CA2022182A1 Ledge for the sheet forming zone of a papermaking machine |
| 02/28/1991 | DE3927597A1 Doppelsieb-former Twin-shaper |
| 02/26/1991 | US4995988 Method and apparatus for thickening a slurry using a compression plate |
| 02/23/1991 | WO1991002842A1 Twin-wire paper-web former |
| 02/13/1991 | EP0412250A1 Apparatus for dewatering, especially press belt filter |
| 02/11/1991 | CA2022779A1 Dewatering device |
| 02/07/1991 | WO1991001408A1 Improved system and method for forming and dewatering a web on a fourdrinier fabric |
| 02/06/1991 | CN1049037A Web forming method and apparatus |
| 01/29/1991 | US4988408 Apparatus for guiding wires of a double wire former |
| 01/22/1991 | US4986882 Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof |
| 01/16/1991 | EP0408128A2 Absorbent paper comprising polymer-modified fibrous pulps and wet-laying process for the production thereof |
| 01/07/1991 | WO1991000768A1 Method and apparatus for treating fiber suspension |
| 01/02/1991 | EP0405154A1 Moist paper forming device for paper machine |
| 12/27/1990 | WO1990015899A1 Process and unit for drying wet nonwovens on a fourdrinier machine |
| 12/27/1990 | EP0404189A1 A method of making a two-ply tissue and a two-ply tissue product |
| 12/27/1990 | EP0403577A1 Twin-wire former and process for making a continuous web of fibrous material. |
| 12/23/1990 | CA2019498A1 Layered two-ply tissue process and product |
| 12/09/1990 | WO1990015188A1 Pressure control forming section |
| 12/09/1990 | WO1990015187A1 Continuous controlled drainage |
| 12/09/1990 | WO1990015186A1 Pressurized forming board |
| 11/20/1990 | US4971742 Method and apparatus for forming a highly isotropic web structure |
| 11/20/1990 | US4970805 Transfer apparatus for transferring a tail of a web |
| 11/14/1990 | EP0397430A1 Web forming method and apparatus |
| 10/24/1990 | EP0393656A1 Assembly in a paper machine for effecting upward dewatering |
| 10/23/1990 | US4964956 Improve detachment, prevent fluttering by abruptly changing direction of travel of one wire |
| 10/19/1990 | CA2014790A1 Assembly in a paper machine for effecting upward dewatering |
| 10/10/1990 | EP0391025A1 Twin-wire former |
| 10/04/1990 | CA2012251A1 Twin wire former |
| 10/03/1990 | CN1045828A Web forming method and device |
| 10/03/1990 | CN1045827A Apparatus for guiding wires of paper machine former |
| 10/02/1990 | US4960492 Common wire path of a wet end section of a twin wire paper making machine |
| 09/26/1990 | EP0389404A2 Web former |
| 09/12/1990 | CN1045286A Multiple long net full sealed paper making machine |
| 08/23/1990 | WO1990009481A1 A forming apparatus for forming a web from stock |
| 08/22/1990 | EP0383616A1 Method and apparatus for forming three dimensional composite webs |
| 08/14/1990 | US4948542 Method and device for manufacturing fibre board |
| 08/07/1990 | US4945655 Apparatus for cutting a tail from a web |
| 07/31/1990 | CA1272054A1 Headbox for the production of fibrous stock webs |
| 07/18/1990 | EP0295239B1 Disk screen improvement for chip screening efficiency |
| 07/04/1990 | EP0376639A2 Filter deck assembly |
| 06/20/1990 | CN1043178A Method and device in formation of paper or board web |
| 06/13/1990 | EP0373133A2 Method and device in the formation of a paper or board web |
| 06/13/1990 | EP0372815A2 Apparatus for guiding wires of a paper machine former |
| 06/06/1990 | EP0371786A2 Web forming method and apparatus |
| 06/06/1990 | CN1008284B Web forming apparatus |
| 06/01/1990 | CA2004174A1 Method and device in the formation of a paper or board web |
| 06/01/1990 | CA2004124A1 Apparatus for guiding wires of a paper machine former |
| 06/01/1990 | CA2004123A1 Web forming method and device |
| 05/31/1990 | WO1990005689A1 A device for achieving uniform distribution of airborne fibres, e.g. cellulose-fibres |
| 05/23/1990 | EP0369975A1 A device for achieving uniform distribution of airborne fibres, e.g. cellulose-fibres |
| 05/23/1990 | EP0369611A2 Apparatus for thickening pulp and paper stock |
| 05/23/1990 | EP0369296A2 Paper machine twin-wire former |
| 05/22/1990 | US4927582 Method and apparatus for creating a graduated distribution of granule materials in a fiber mat |
| 05/17/1990 | WO1990005210A1 Forming apparatus |
| 05/15/1990 | US4925531 Twin wire former for a paper machine |
| 05/08/1990 | US4923568 Dewatering zone in a papermachine |
| 05/03/1990 | WO1990004676A1 A paper machine for manufacturing a soft crepe paper web |
| 05/02/1990 | EP0365826A1 Process and device for the production of mineral-fibre boards |
| 05/02/1990 | CN1007789B Disc screen with decreasing dap wide and screening method |
| 04/26/1990 | DE3835903A1 System for charging a multilayer flowbox for a paper machine |
| 04/25/1990 | CN1041628A Apparatus and method for making paper web |
| 04/24/1990 | US4919760 Web former for a paper machine |
| 04/24/1990 | US4918836 Tail cutter apparatus and method |
| 04/18/1990 | EP0364114A1 Wet cellulosic web transfer |
| 04/17/1990 | US4917766 Hybrid former for a paper machine |
| 03/27/1990 | US4911791 Apparatus for forming, pressing and drying paper webs having a felt and web run to a Yankee cylinder |
| 03/21/1990 | EP0359696A2 Apparatus and method for making a paper web |
| 03/13/1990 | US4908102 Endless porous belt for water to pass through, guide rolls, dewatering roll, container for receiving water, guide wall to direct jets of water |
| 03/08/1990 | WO1990002225A1 A tail cutter apparatus and method |
| 03/07/1990 | CN1040240A Wet compositing method and equipment for packing paper |
| 03/06/1990 | US4906364 Filter deck assembly sliding seal |
| 03/06/1990 | CA1266392A1 Twin-wire former and method for forming a paper web and forming roll for use in the former |
| 02/27/1990 | US4904439 Method of making a non-woven fiber web using a multi-headed ductless webber |
| 02/22/1990 | WO1990001580A1 An apparatus for cutting a tail from a web |
| 02/14/1990 | EP0354741A2 Apparatus for thickening pulp and paper stock |
| 01/25/1990 | DE3823966A1 Vorrichtung zum fuehren der siebe einer doppelsiebpartie einer papier- oder kartonmaschine Apparatus for lead of a twin-screened a paper or cardboard machine |
| 01/23/1990 | US4895623 Meshes, horizontal, compression, depressurization |
| 01/16/1990 | US4894120 Gradual dewatering minimizes removal of fines and improves uniformity |
| 01/09/1990 | US4892622 Air curtain traveling with web |
| 12/20/1989 | EP0346519A1 Dewatering unit for Fourdrinier machines |
| 12/14/1989 | WO1989012139A1 Method of producing dry formed fibre material |
| 12/06/1989 | EP0345234A2 Feeding system for the former of a dry-paper machine |
| 11/23/1989 | EP0343139A2 Method and aparatus for forming a dry web on the wire |
| 11/16/1989 | WO1989011000A1 Twin-wire former and process for making a continuous web of fibrous material |
| 11/16/1989 | DE3815316A1 Device for dewatering on a twin-wire former |
| 11/08/1989 | EP0340252A1 Double-screen format |
| 11/07/1989 | US4879001 Twin wire former with roll press followed by extended nip press |
| 10/24/1989 | US4875977 Horizontal twin wire machine with vertically adjustable open roll and deflector blade |
| 10/04/1989 | EP0335821A2 An apparatus for forming a web |
| 10/04/1989 | EP0334887A1 Device at fibre board manufacture. |
| 09/20/1989 | CN2044614U Single-or double-long net paper making machine with single cylinder |
| 08/23/1989 | CN2043249U Small size paper-making machine |
| 06/13/1989 | CA1255528A1 Method and apparatus in a paper machine for regulating pressure in the space between a headbox lip beam and breast roll |
| 05/31/1989 | EP0318107A1 Method of formation of a fibrous web in a papermachine and apparatus for accomplishing the method |
| 05/30/1989 | US4834838 Fibrous tape base material |
| 05/18/1989 | WO1989004397A1 Double-screen format |
| 05/16/1989 | US4830709 Multi-ply web forming apparatus and method |