| Patents for D21F 9 - Complete machines for making continuous webs of paper (2,705) |
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| 02/17/1994 | WO1994003674A1 A method and device for web cutting in the former of a paper machine |
| 02/08/1994 | US5284610 High molecular absorbent sheet manufacturing process and the related equipment |
| 02/03/1994 | DE4332162A1 Paper machine - utilises a gap-former having two wires with suspension sprayed between them and then passing over cross-rail with convex surfaces |
| 02/03/1994 | DE4224731A1 Appts. for forming sheet out of fibre suspension - has two continuous belts surrounding sheet-forming cylinder partially, one belt is water-permeable |
| 02/02/1994 | EP0581051A1 Multi-layer headbox for a papermaking machine or the like |
| 02/01/1994 | US5282933 Wet section for a twin wire papermaking machine |
| 02/01/1994 | CA2101111A1 Multilayer head box for a paper machine or similar |
| 01/26/1994 | EP0580363A1 Security paper |
| 01/25/1994 | US5281343 System uses hydraulic pressure along with vacuum to induce flow of filtrate from vessel into filtrate conduits |
| 01/25/1994 | CA2100914A1 Security paper |
| 01/13/1994 | DE4236354C1 Used paper recycling - reduces swollen paper to a homogeneous mass for calendering within a cylindrical housing |
| 01/05/1994 | EP0576798A1 Twin wire former |
| 12/29/1993 | EP0575381A1 An apparatus for manufacturing a dried web of paper. |
| 12/23/1993 | WO1993025753A1 Rotary former for manufacturing paper |
| 12/23/1993 | DE4328997A1 Paper-making machine stock inlet - has variable positioning of jet opening round initial shaping roller circumference for best water extraction rate |
| 12/16/1993 | DE4326867A1 Paper-making fourdrinier section - has water extraction unit on swing axis for controlled setting according to pulp thickness |
| 12/15/1993 | EP0476002B1 Continuous controlled drainage |
| 12/02/1993 | DE4321268A1 Device for multilayer paper mfr. - has stock inlet system with separate adjustment for layer of sectional density and a layer of sectional fabric orientation |
| 12/01/1993 | EP0571585A1 Twin-wire former. |
| 12/01/1993 | EP0571584A1 Twin-wire former |
| 11/30/1993 | CA1324752C Tail cutter apparatus and method |
| 11/25/1993 | WO1993023616A1 A tissue making apparatus |
| 11/23/1993 | US5264138 Method and apparatus for treating a fiber suspension |
| 11/18/1993 | DE4235102A1 Paper-making double fourdrinier section |
| 11/16/1993 | US5262009 Stationary support device for dewatering wire |
| 11/11/1993 | WO1993022498A1 A method of rebuilding a conventional tissue machine to a tad machine, and an improved c-wrap type twin wire former suitable for use therein |
| 11/11/1993 | CA2118244A1 Method of rebuilding a conventional tissue machine to a tad machine, and an improved c-wrap type twin wire former suitable for use therein |
| 11/09/1993 | US5259929 Twin wire former |
| 10/28/1993 | DE4212609A1 Paper-making double fourdrinier section |
| 10/24/1993 | CA2079053A1 Supporting device for dewatering elements |
| 10/12/1993 | US5252186 Wire or felt forming section with breast rollers supported by hydrostatic bearings |
| 10/12/1993 | CA1322838C Ductless webber |
| 09/28/1993 | US5248392 Sheet-forming apparatus for a twin wire paper machine with positive pulse shoe blades |
| 09/23/1993 | DE4208681A1 Double four drinker paper-making press section - has forming roller for lower four drinker at entry with water extn. unit and further forming roller at upper four drinker |
| 09/07/1993 | US5242547 Submerged drainage system for forming and dewatering a web on a fourdrinier fabric |
| 08/31/1993 | CA1321760C Method for thickening of slurry and for its treatment with liquid as well as a drum filter |
| 08/25/1993 | CN1075516A Double-cylinder sieve enclosed shaping apparatus for paper |
| 08/10/1993 | CA1321093C Wet cellulosic web transfer system |
| 07/27/1993 | US5230776 Paper machine for manufacturing a soft crepe paper web |
| 07/21/1993 | EP0552139A1 Web former for a paper machine |
| 07/07/1993 | EP0549764A1 Two-wire web-forming section of a paper machine |
| 07/06/1993 | US5225043 Twin wire former with water guide element over the forming zone |
| 07/06/1993 | US5225042 Twin wire paper forming section with heated air pressure domes |
| 06/29/1993 | CA1319621C Method and equipment for filtration of suspension |
| 06/24/1993 | DE4141607A1 Doppelsiebformer A twin |
| 06/22/1993 | US5221438 Supporting device for dewatering elements |
| 06/18/1993 | WO1993012292A1 Twin-wire former |
| 06/18/1993 | WO1993012291A1 Twin-wire former |
| 06/18/1993 | CA2104299A1 Twin-wire former |
| 06/18/1993 | CA2104230A1 Twin-wire former |
| 06/10/1993 | WO1993011298A1 Controlled jet injection apparatus for a papermaking machine headbox |
| 06/09/1993 | EP0458799B1 A forming apparatus for forming a web from stock |
| 06/02/1993 | CN2135014Y Improved horizontal arranged multiple fourdrinier wire paper-making machine |
| 06/01/1993 | US5215628 Twin-wire web former in a paper machine |
| 05/18/1993 | US5211814 Wire loading device in a paper machine |
| 05/18/1993 | CA1317807C Procedure and means in the wire section of a paper machine |
| 05/04/1993 | CA1317141C Twin-wire former and method for producing a fibrous web |
| 04/27/1993 | CA1316662C Multi-headed ductless webber |
| 04/21/1993 | EP0537142A1 Method and apparatus for manufacturing multilayer filter material. |
| 04/21/1993 | EP0537140A1 Method and apparatus for manufacturing multilayer filter material. |
| 04/20/1993 | US5203967 Twin-wire former in a paper machine |
| 04/20/1993 | CA1316383C Horizontal twin wire machine |
| 04/13/1993 | US5201999 Twin wire forming apparatus |
| 03/24/1993 | EP0532741A1 Method and apparatus for improved twin wire forming. |
| 03/10/1993 | EP0489094B1 Twin-wire paper-web former |
| 03/02/1993 | CA1313965C Multi-ply web forming apparatus and method |
| 03/02/1993 | CA1313964C Apparatus for forming a web |
| 02/24/1993 | EP0528248A1 Wet-formed composite and method of manufacturing same |
| 02/10/1993 | EP0526592A1 Paper machine for the manufacture of high bulk soft crepe paper. |
| 02/10/1993 | EP0403577B1 Twin-wire former and process for making a continuous web of fibrous material |
| 02/09/1993 | US5185064 Means for controlling wires in a paper machine or cardboard machine |
| 02/03/1993 | EP0526259A1 Extended flexible headbox slice |
| 01/20/1993 | WO1993002250A1 Two-wire web-forming section of a paper machine |
| 01/14/1993 | DE4229184A1 Paper-making wet pulp section - has drive to give reciprocating sliding movement to a lateral unit, to maintain paper thickness |
| 01/12/1993 | US5178729 High purity stratified tissue and method of making same |
| 12/30/1992 | EP0520970A1 Twin-wire former in a paper machine |
| 12/23/1992 | WO1992022704A1 A forming apparatus |
| 12/22/1992 | CA2051544A1 Extended flexible headbox slice |
| 12/02/1992 | EP0516601A1 Wire loading device in a paper machine |
| 12/02/1992 | EP0515964A1 Twin wire former for a papermaking machine |
| 12/01/1992 | US5167770 De-watering apparatus in a two-wire former |
| 11/30/1992 | CA2070075A1 Twin-wire former for a paper making machine |
| 11/17/1992 | US5164045 Paper, cellulose and eucalyptus fibers |
| 11/10/1992 | CA1309887C Common wire path of a wet end section of a twin wire paper making machine |
| 11/08/1992 | CA2167946A1 Method for the use of enzymes in processing and bleaching of paper pulp, and apparatus for the use thereof |
| 11/03/1992 | US5160584 High consistency sheet former |
| 11/03/1992 | US5160583 Controlled jet injection apparatus for a papermaking machine headbox |
| 10/31/1992 | CA2067455A1 Stationary support device for dewatering wire |
| 10/27/1992 | CA1309242C Fibrous tape base material |
| 10/21/1992 | EP0509561A2 Method and apparatus for treating fiber suspension |
| 10/15/1992 | WO1992017644A1 Method and apparatus for improved twin wire forming |
| 10/15/1992 | CA2079227A1 Method and apparatus for improved twin wire forming |
| 09/16/1992 | EP0504123A1 Twin-wire web former in a paper machine |
| 09/15/1992 | US5147155 Device for achieving uniform distribution of airborne fibres, e.g. cellulose-fibres |
| 09/14/1992 | WO1992016689A1 An apparatus for manufacturing a dried web of paper |
| 09/08/1992 | CA1307186C Apparatus for cutting a tail from a web |
| 09/03/1992 | WO1992014880A1 Top wire device |
| 08/25/1992 | US5141600 Twin-wire former |
| 08/21/1992 | CA2061517A1 Felt forming section with breast roller supported by hydrostatic bearing |
| 08/05/1992 | CN1063323A Piling up net forming paper machine |