| Patents for D21F 1 - Wet end of machines for making continuous webs of paper (14,078) |
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| 09/26/1989 | CA1260750A1 Heated variable crown roll |
| 09/26/1989 | CA1260749A1 Endless belt |
| 09/26/1989 | CA1259840A1 Wet press papermakers felt and method of fabrication |
| 09/26/1989 | CA1259839A1 Method and apparatus for controlling distortion of fibre orientation in a paper web |
| 09/26/1989 | CA1259838A1 Forming board structure and method in paper sheet forming processes |
| 09/21/1989 | WO1989008740A1 Device for joining the opposite ends of a belt |
| 09/21/1989 | DE3907561A1 Method for reducing the transparency of a wire link conveyor, and a wire link conveyor of limited transparency |
| 09/21/1989 | DE3808154A1 Injector having bubble divider |
| 09/19/1989 | US4867847 Expanding body for use in a headbox or a stationary support device |
| 09/19/1989 | US4867206 Drainage belt for presses in the wet section of a paper machine |
| 09/19/1989 | US4866821 Mechanism for separating threads held in an array |
| 09/13/1989 | EP0332146A1 Process for putting under tension a synthetic cloth around a cylinder and tensioning apparatus for the application of the process |
| 09/13/1989 | EP0332144A1 Apparatus for joining, under tension, the ends of a large belt together for covering a surface, in particular a paper-machine roll |
| 09/13/1989 | EP0331813A1 Device for fixing a separating lamina |
| 09/13/1989 | EP0331812A1 Device for positioning the slice bar |
| 09/12/1989 | US4865692 Stationary support member for web producing machine |
| 09/12/1989 | US4865083 Seamed multi-layered papermaker's fabric |
| 09/06/1989 | CN1035334A Extended nip press belt guide and method |
| 09/06/1989 | CN1035333A Mould-netless slot shaper |
| 09/05/1989 | US4863786 Papermachine clothing |
| 09/05/1989 | US4862926 Shaped monofilament coil seam and fabrics |
| 09/05/1989 | US4862566 Auxiliary device for a seam weaving machine for joining the ends of flat-woven fabrics |
| 08/29/1989 | USRE33034 Press roll for web material with clamped press jacket |
| 08/29/1989 | US4861433 Dewatering press with perforated metal outer shell and resilient elastic mounting means |
| 08/29/1989 | US4861432 Dual compartment vacufoil unit to eliminate secondary headbox chatter |
| 08/29/1989 | US4861429 Process for inhibiting white pitch deposition in papermaking felts |
| 08/29/1989 | US4861165 Method of and means for hydrodynamic mixing |
| 08/23/1989 | EP0328844A1 Extended nip press belt guide and method |
| 08/15/1989 | US4857391 Non-woven paper machine dryer fabric without slack edges |
| 08/15/1989 | US4856562 Papermakers wet felts |
| 08/15/1989 | US4856205 Air guide box for the drying section of a high-speed paper machine |
| 08/15/1989 | US4856159 Spreader roll or equivalent for fabric in paper machine and method for the manufacture thereof |
| 08/15/1989 | US4856158 Spreader roll or equivalent for a fabric in a paper machine, and method for manufacturing the same |
| 07/26/1989 | EP0325167A1 Double-layer screen for the forming section of a paper machine |
| 07/26/1989 | CN2041694U Automatic adjusting net device for middle or small long-net paper machine |
| 07/25/1989 | US4851083 Headbox slice measurement gauge |
| 07/25/1989 | US4850121 Dryer felt run |
| 07/25/1989 | CA1257798A1 Spiral seam for multiple layer flat warp monofilament fabrics |
| 07/12/1989 | EP0323468A1 Headbox. |
| 07/11/1989 | US4846231 Seam design for seamed felts |
| 07/11/1989 | CA1257152A1 Papermakers felt with a resin matrix surface |
| 07/11/1989 | CA1257125A1 Papermachine clothing |
| 07/05/1989 | CN1033667A Paper machine without woolen blanket |
| 07/05/1989 | CN1033665A Recovering technique and equipment of fibre in mould machine without power |
| 07/04/1989 | CA1256730A1 Web forming device |
| 06/28/1989 | EP0321911A1 Method and apparatus in a head box of a paper machine for stabilizing the jet flow |
| 06/27/1989 | US4842905 Tessellated papermakers fabric and elements for producing the same |
| 06/27/1989 | US4842212 Apparatus for seaming papermaker's fabric |
| 06/27/1989 | US4841610 Device for adjusting the profile of a roll with a deformable wall |
| 06/22/1989 | DE3742101A1 Combination fabric as paper machine wire for the wet end of a paper machine |
| 06/22/1989 | DE3741871A1 Rotating brush cleaner |
| 06/20/1989 | US4840047 Multiscreen pressure diffuser |
| 06/20/1989 | CA1255871A1 Method and apparatus for forming a web |
| 06/20/1989 | CA1255870A1 Method and apparatus for forming a web |
| 06/13/1989 | US4839213 Conveyor belt constituted by plastic spirals |
| 06/13/1989 | US4838996 Hydrofoil blade for producing turbulence |
| 06/13/1989 | US4837907 Self-loading controlled deflection roll |
| 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 |
| 06/07/1989 | EP0318756A1 Process and device for removing ashes |
| 06/06/1989 | US4836895 Headbox for paper machines or the like |
| 06/06/1989 | CA1255237A1 Method in thickening a fiber suspension in a thickening apparatus |
| 06/06/1989 | CA1255141A1 Multilayered press felt |
| 05/31/1989 | EP0317771A1 Effective diffuser/thickener screen backflushing |
| 05/30/1989 | US4834838 Fibrous tape base material |
| 05/30/1989 | US4833941 Air motor harmonic drive slice lip automation device |
| 05/30/1989 | CA1254736A1 System for distributing steam on a paper web |
| 05/30/1989 | CA1254735A1 Apparatus in a drying section of a paper machine |
| 05/23/1989 | US4832794 Bending |
| 05/23/1989 | US4832090 Paper making wire |
| 05/18/1989 | WO1989004397A1 Double-screen format |
| 05/18/1989 | WO1989004396A1 Process for manufacturing web-type materials from fibers or other particles suspended in newtonian or non-newtonian fluids |
| 05/16/1989 | US4830709 Multi-ply web forming apparatus and method |
| 05/16/1989 | US4829681 Paper machine clothing |
| 05/16/1989 | CA1254153A1 Method for dewatering a fiber suspension in a dewatering apparatus |
| 05/11/1989 | DE3830683A1 Doppelsiebformer A twin |
| 05/10/1989 | EP0174945B1 A method for controlling shrinkage and/or stretching of a paper web in the drying section of a paper machine, in the form of a cylinder drier and/or fan dryer, transversely to the feed direction of the web; and arrangements for carrying out the method |
| 05/09/1989 | US4827579 Jointing of fabric ends |
| 05/05/1989 | WO1989003911A1 A method of removing organic substances from effluents from pulp and paper manufacturing processes |
| 05/03/1989 | EP0313853A1 Auxiliary device at a seaming machine for making a flat woven plastics screen endless by means of a woven seam |
| 05/03/1989 | DE3735709A1 Dewatering belt |
| 05/02/1989 | CA1253416A1 Cloth, particularly for paper-manufacturing machine, and method for manufacturing same |
| 04/26/1989 | EP0312536A1 Method of treatment of the circulation water of a paper mill |
| 04/25/1989 | US4824525 Papermaking apparatus having a seamed wet press felt |
| 04/25/1989 | US4824524 Multi-ply headbox for a papermaking machine |
| 04/19/1989 | EP0312350A2 Improved method of seaming a seamed felt on a papermaking machine |
| 04/19/1989 | EP0311621A1 A method and an arrangement for joining the ends of a band-shaped product |
| 04/18/1989 | US4822454 Enhanced soil removal from paper machine forming fabrics |
| 04/18/1989 | US4821780 Multi-layer fabric for paper-making |
| 04/12/1989 | EP0239570B1 A bearing blanket for an extended nip press |
| 04/12/1989 | CN2035770U Sealing and forming device for paper sheet double round net |
| 04/11/1989 | US4820571 Polyether ketone polymer |
| 04/11/1989 | CA1252394A1 Three-way valve for an attenuator |
| 04/11/1989 | CA1252288A1 Method and apparatus for supporting the web in high- speed machines |
| 04/04/1989 | CA1251979A1 Twin wire former |
| 03/28/1989 | US4815503 Fabric for the sheet forming section of a papermaking machine |
| 03/28/1989 | US4815499 Composite forming fabric |
| 03/28/1989 | US4815220 Web transfer apparatus |
| 03/28/1989 | CA1251697A1 Industrial fabrics |
| 03/28/1989 | CA1251673A1 Surge control system |
| 03/23/1989 | WO1989002499A1 Means for controlling wires in a paper machine or cardboard machine |