| Patents for D21F 9 - Complete machines for making continuous webs of paper (2,705) |
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| 05/11/1989 | DE3830683A1 Doppelsiebformer A twin |
| 04/25/1989 | US4824524 Multi-ply headbox for a papermaking machine |
| 04/12/1989 | EP0311507A2 Process for continuous determination of paper strength |
| 04/05/1989 | EP0309530A1 Machine for manufacture of webs of fibrous materials. |
| 03/23/1989 | WO1989002499A1 Means for controlling wires in a paper machine or cardboard machine |
| 03/15/1989 | EP0306759A1 Means for controlling wires in a paper machine or cardboard machine |
| 03/14/1989 | US4812209 Wedge-shaped partition divides nozzle chamber for two flow channels; for paper machines |
| 02/28/1989 | US4808266 Dripping, pressing, evaporation with gas flow while on single porous support |
| 02/28/1989 | CA1250478A1 Apparatus for uniformly dispersing paper raw material |
| 02/22/1989 | EP0304098A1 Former for forming a paper web |
| 02/09/1989 | DE3824569A1 Apparatus for the production of a fibre web |
| 02/07/1989 | US4802954 Forming board for papermaking machine |
| 01/25/1989 | EP0300547A1 Dewatering zone in a papermachine |
| 01/24/1989 | CA1249157A1 Paper layer forming apparatus |
| 01/19/1989 | EP0136329A4 Method and apparatus for producing paper and other nonwoven fibrous webs. |
| 01/18/1989 | EP0299940A1 Web former for a paper machine |
| 01/03/1989 | US4795335 Multi-headed ductless webber |
| 12/21/1988 | EP0296135A2 Hydrid former for a paper machine |
| 12/21/1988 | EP0295239A1 Disk screen improvement for chip screening efficiency. |
| 12/13/1988 | US4790909 Two-wire paper forming apparatus |
| 12/06/1988 | CA1245900A1 Vibration forming shoe for a twin wire former |
| 11/30/1988 | EP0292623A1 Apparatus for and methods of forming airlaid fibrous webs having a multiplicity of components |
| 11/15/1988 | US4784725 Vat paper machine |
| 11/02/1988 | EP0289445A2 Multi-ply web forming apparatus and method |
| 11/01/1988 | US4781793 Method for improving paper properties in multiply paper using long and short fiber layers |
| 10/20/1988 | WO1988008051A1 Machine for manufacture of webs of fibrous materials |
| 10/19/1988 | EP0287276A2 Horizontal twin wire machine |
| 10/11/1988 | CA1242914A1 Process and equipment in the forming of paper web |
| 10/11/1988 | CA1242913A1 Twin-wire former for paper machine |
| 08/30/1988 | US4767586 Having rotating cylinder and blades |
| 08/24/1988 | EP0279465A2 Fibrous tape base material |
| 08/23/1988 | CA1240872A1 Apparatus and method for dewatering a web in a paper machine |
| 08/09/1988 | CA1240187A1 Paper forming machines |
| 06/16/1988 | WO1988004224A1 Device at fibre board manufacture |
| 06/14/1988 | US4750340 Apparatus for treating a fibre suspension |
| 05/17/1988 | US4744866 Web-forming method in a paper machine |
| 05/10/1988 | CA1236323A1 Means in the vat section of a vat machine |
| 04/27/1988 | EP0264799A2 A means in the vat section of a vat machine |
| 04/05/1988 | US4735686 Twin-wire former and method for forming a paper web with steam implosion |
| 03/29/1988 | US4734164 From dilute slurry of fibers |
| 03/22/1988 | CA1234308A1 Forming roll apparatus |
| 03/09/1988 | EP0258918A1 Method to dewater pulp for paper with simultaneous formation of sheet in a two-wire system, and apparatus which employs such method |
| 03/01/1988 | CA1233537A1 Orientation line in an endless travelling web |
| 02/23/1988 | CA1233055A1 Process and equipment for water discharge from fiber pulp |
| 02/09/1988 | US4724047 Horizontal twin wire machine |
| 02/03/1988 | EP0254899A1 Drainage apparatus |
| 01/13/1988 | CN87104665A Web forming apparatus |
| 01/07/1988 | EP0251985A2 Web forming apparatus |
| 01/07/1988 | EP0251778A1 Method and apparatus for removing water from a fibrous web in a papermachine |
| 01/05/1988 | CA1230995A1 Method and apparatus for producing paper and other nonwoven fibrous webs |
| 12/22/1987 | US4714521 Twin wire former with an impermeable belt inside the top wire |
| 12/16/1987 | CN87102975A Disc screen improvement for chip screen efficiency |
| 12/15/1987 | US4713276 Paper-like product, method and apparatus for production thereof and prepreg formed of said paper-like product |
| 11/24/1987 | US4708773 Impermeable plate for uniformly dispersing paper raw material in a twin wire paper former |
| 11/05/1987 | WO1987006637A1 A web forming apparatus |
| 11/05/1987 | WO1987006505A1 Disk screen improvement for chip screening efficiency |
| 11/03/1987 | US4703860 Disk screen with decreasing size of slot openings, and method |
| 11/03/1987 | CA1228760A1 Horizontal twin wire machine |
| 10/27/1987 | US4702800 Horizontal twin wire paper machine |
| 10/20/1987 | US4701294 Forming fibrous web with contoured cross sectional profile |
| 09/29/1987 | CA1227364A1 Apparatus for affecting a web formed on a wire |
| 08/11/1987 | US4686004 Good formation over wide range of basis weight and wide variable speed |
| 07/28/1987 | US4683027 Method and apparatus in a paper machine for regulating pressure in the space between a headbox lip beam and breast roll |
| 07/23/1987 | DE3641954A1 Device for removing impurities from rollers or cylinders |
| 07/02/1987 | WO1987003920A1 A means in the vat section of a vat machine |
| 07/01/1987 | EP0226939A2 Apparatus and method for forming a fibrous web |
| 05/19/1987 | US4666647 Apparatus and process for forming a laid fibrous web |
| 05/05/1987 | US4662992 Twin-wire papermaking machine and method of dewatering a paper web in a twin-wire papermaking machine |
| 04/21/1987 | US4659432 Vat paper machine |
| 04/14/1987 | US4657635 Method and apparatus for the deflocculation of stock |
| 03/31/1987 | CA1219758A1 Web-forming section of a paper machine |
| 03/24/1987 | US4652736 Guide line in an endless travelling web |
| 03/17/1987 | CA1219159A1 Forming shoe for a former in a paper machine |
| 03/10/1987 | US4648943 Improved drainage |
| 11/18/1986 | US4623429 Twin-wire forming section of a paper machine |
| 10/15/1986 | EP0197906A2 Felt and web run in yankee machines |
| 10/09/1986 | WO1986005825A1 Felt and web run in yankee machines |
| 09/30/1986 | US4614566 Web-forming section in a paper machine |
| 09/23/1986 | CA1211651A1 Dehydration machine for pulp, sludges or similar fibrous materials |
| 09/02/1986 | US4609435 Process and equipment in the forming of paper web |
| 07/31/1986 | WO1986004368A1 Procedure and means for improving the papermaking process on a fourdrinier wire section |
| 07/30/1986 | EP0188932A1 Process and apparatus for removing a liquid from a material obtained, in particular by a paper-making process |
| 06/03/1986 | CA1205310A1 Method and apparatus for web forming |
| 05/22/1986 | WO1986002961A1 Twin-wire former |
| 05/13/1986 | CA1204256A1 Process and apparatus for manufacture of high bulk paper |
| 04/22/1986 | US4584058 Method and apparatus for dewatering a fibrous web |
| 04/22/1986 | CA1203407A1 System for washing pulp |
| 04/09/1986 | EP0177439A2 Paper web forming apparatus |
| 03/18/1986 | US4576681 Machine for making a fiber web with sharply defined edges |
| 01/21/1986 | US4565603 Method and device for reducing disturbances during paper web formation |
| 01/02/1986 | EP0166189A2 A means in the vat section of a vat machine |
| 12/31/1985 | US4561938 Forming roll apparatus |
| 12/10/1985 | US4557802 Dewatering device for paper machine |
| 11/19/1985 | US4554052 Method and apparatus for web forming |
| 11/06/1985 | EP0160615A2 Top wire former |
| 10/23/1985 | EP0158938A2 Apparatus for the manufacture of fibrous webs |
| 10/01/1985 | US4544447 Reversal takes place directly at wedging section |
| 09/25/1985 | EP0155677A2 Paper-like product, method and apparatus for production thereof and prepreg formed of said paper-like product |
| 09/24/1985 | US4543156 Method for manufacture of a non-woven fibrous web |
| 08/28/1985 | EP0153288A2 Forming roll apparatus |