| Patents for D21F 1 - Wet end of machines for making continuous webs of paper (14,078) |
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| 01/11/1994 | US5277761 Having a high or low basis weight with a high or low density |
| 01/06/1994 | WO1994000635A1 A curved suction box apparatus |
| 01/05/1994 | EP0577572A1 Method in a dryer section provided with single-wire draw and wire group in said dryer section |
| 01/05/1994 | EP0490906B1 An apparatus for cutting a moving paper sheet by means of a water jet |
| 01/05/1994 | DE4221028A1 Used paper recycling |
| 01/05/1994 | DE4220446A1 Tubular elastomeric cover for curved rollers - has high strength non-metallic reinforcement with high internal damping and low extensibility |
| 01/04/1994 | US5275700 Papermaking belt and method of making the same using a deformable casting surface |
| 12/29/1993 | EP0576177A1 Recovery and re-use of raw materials from paper mill waste sludge |
| 12/29/1993 | EP0575385A1 Method and device for the detection and removal of bulges in continuous strips of material. |
| 12/29/1993 | EP0575383A1 Seam for fabrics. |
| 12/28/1993 | US5273624 Pressurized flotation module and method for pressurized foam separation |
| 12/23/1993 | WO1993025864A1 Magnetic measuring method and apparatus for determining the size and shape of a slot |
| 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 |
| 12/22/1993 | EP0484342B1 Filter cylinder |
| 12/21/1993 | US5271807 Headbox with profile bar measuring devices |
| 12/21/1993 | CA1325378C Method and a device for cutting a web in a paper machine by means of a water jet |
| 12/16/1993 | DE4326867A1 Paper-making fourdrinier section - has water extraction unit on swing axis for controlled setting according to pulp thickness |
| 12/16/1993 | DE4302031C1 Fourdrinier for paper mfg. machine for large contact surface area - comprises oven plastics filaments with gp. in sub-gps. shrunk for longitudinal filaments side by side, for flexibility |
| 12/15/1993 | EP0573524A1 Forming fabric. |
| 12/15/1993 | EP0476002B1 Continuous controlled drainage |
| 12/15/1993 | EP0412136B1 Adjustment gear assembly |
| 12/14/1993 | US5269884 Paper machine deckle cupping rails with flushing fountain |
| 12/14/1993 | CA2025133C Felt turning roll |
| 12/09/1993 | DE4322565A1 Paper-making blanket maintenance - uses combination of steam blower and suction on the same side of moving blanket |
| 12/09/1993 | DE4237302A1 Material accumulation for paper machine avoiding fibre cross profile - useful for distribution of feed=in material suspension above machine strip width of sieve for edge area feedback corresp. to excess width |
| 12/09/1993 | DE4215971A1 Endless machinery cloth seam mfr. for paper maker's felt - by using common implements to form seam, holding warp ends vertical to seam, and forming shed of weft threads to release warp, for rapid prodn. |
| 12/07/1993 | CA1324907C Wire-link strip |
| 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 | US5266168 Gravity type pulp washer or thickener with rotating disrupters |
| 11/25/1993 | WO1993023619A1 Cable loop |
| 11/25/1993 | WO1993023612A1 Process and apparatus for circulating backwater in a papermaking machine |
| 11/25/1993 | WO1993023611A1 Paper machine clothing |
| 11/25/1993 | WO1993023610A1 Apparatus and process for the sorting of a pulp suspension |
| 11/25/1993 | WO1993023609A1 Process and apparatus for the screening of a pulp suspension |
| 11/25/1993 | CA2135407A1 Papermachine clothing |
| 11/24/1993 | CN2147257Y Rifling cone sand remover |
| 11/23/1993 | US5264138 Method and apparatus for treating a fiber suspension |
| 11/23/1993 | CA1324521C Roll |
| 11/18/1993 | DE4321521A1 Waste paper processing removing large proportion of wax content - by decomposing waste paper in pulp dissolver, precleaning, opt. diluting with water and floating suspension to separate wax |
| 11/18/1993 | DE4235102A1 Paper-making double fourdrinier section |
| 11/18/1993 | DE4215532A1 Used paper recycling |
| 11/16/1993 | US5262010 Dewatering device with adjustable force elements for the web-forming section of a papermaking machine |
| 11/16/1993 | US5262009 Stationary support device for dewatering wire |
| 11/16/1993 | CA1324344C Screen segment for filters for thickening fiber suspensions |
| 11/16/1993 | CA1324281C Endless wire for pulp thickener |
| 11/11/1993 | WO1993022496A1 Apparatus and method of making an authenticated web formed of fibrous material |
| 11/11/1993 | WO1993022495A1 Headbox arrangement for a paper machine |
| 11/11/1993 | DE4322320A1 Suction appts. for paper machine felt - has suction box with cover plate with slits arranged in fishbone-like manner |
| 11/11/1993 | CA2134199A1 Apparatus and method of making an authenticated web formed of fibrous material |
| 11/10/1993 | EP0569085A1 Pitch or stickies control agent |
| 11/09/1993 | US5259940 Apparatus and method for removing liquid from liquid bearing material |
| 11/09/1993 | CA1324037C Press felt conditioner for neutral and alkaline papermaking systems |
| 11/03/1993 | CN2145202Y Improved structure of extruding hydroextractor |
| 10/28/1993 | WO1993021378A1 Paper machine fabric |
| 10/28/1993 | DE4213707A1 Stoffauflaufeinrichtung für eine Papiermaschine Headbox device for a paper machine |
| 10/28/1993 | DE4212609A1 Paper-making double fourdrinier section |
| 10/27/1993 | EP0567206A1 Loop formation in on-machine-seamed press fabrics using unique yarns |
| 10/27/1993 | CN2144663Y Paper-making polyester cylinder heat boarding machine |
| 10/24/1993 | CA2079053A1 Supporting device for dewatering elements |
| 10/20/1993 | EP0566127A1 Anti-contaminant treatment for papermaking fabrics |
| 10/20/1993 | EP0565923A1 Mixer for mixing two fluids, producing a constant volume flow, for feeding the headbox of a paper machine |
| 10/20/1993 | CN2144136Y High-efficient low-energy-consumption high-pressure water device |
| 10/19/1993 | US5254398 Woven multilayer papermaking fabric having increased stability and permeability and method |
| 10/19/1993 | CA1323235C Single layer seamed papermakers fabric |
| 10/14/1993 | DE4316054A1 Stock inlet for paper-making machine - has sections where mixed part flows from a common feed to set suspension compsn. according to use |
| 10/14/1993 | DE4311402A1 Paper making blanket belt monitor - has combined action of microwaves to register water content with underpressure measurement and suction air temp. to restore belt condition |
| 10/13/1993 | EP0564474A1 Improvements in and relating to paper machine clothing |
| 10/12/1993 | US5252186 Wire or felt forming section with breast rollers supported by hydrostatic bearings |
| 10/12/1993 | CA1322882C Long-nip press roll |
| 10/08/1993 | CA2093190A1 Apparatus for measuring the condition of a felt in a paper machine |
| 10/07/1993 | DE4211290A1 Stock inlet flow mixer - has cross=section of one feed near the end of the other feed for a constant mixed vol flow |
| 10/06/1993 | EP0564436A1 Releasable joining device for textile belts, bands, endless sifting bands or the like |
| 10/06/1993 | EP0563206A1 Woven fabric for a papermaking machine or the like, and method of manufacturing such a fabric. |
| 10/04/1993 | CA2093366A1 Mixing system for mixing two liquids at constant mixture volume flow for supplying the headbox of a paper machine |
| 09/30/1993 | WO1993017180A3 Paper machine dryer fabrics containing hollow monofilaments |
| 09/29/1993 | CN1076744A Cylinder mould without bronze bar, wound wire and lining net |
| 09/28/1993 | US5248392 Sheet-forming apparatus for a twin wire paper machine with positive pulse shoe blades |
| 09/25/1993 | CA2063873A1 Paper-making kit with improved basin and web supporting screen |
| 09/23/1993 | DE4306939A1 Paper-making stock inlet - has mixing chamber in front of outlet channel with feeds to vary material suspension composition |
| 09/21/1993 | US5246992 Polyester fibers modified with carbodiimides and process for their preparation |
| 09/21/1993 | US5246548 Pitch control |
| 09/21/1993 | US5245939 Web supporting edge receiving fabric |
| 09/15/1993 | EP0560753A1 Apparatus for treating pulp |
| 09/14/1993 | US5245025 Method and apparatus for making cellulosic fibrous structures by selectively obturated drainage and cellulosic fibrous structures produced thereby |
| 09/14/1993 | US5244543 Belt filter press fabric |
| 09/14/1993 | CA1322121C Strip of material and its manufacturing method |
| 09/09/1993 | DE4206748A1 Used paper recycling |
| 09/08/1993 | EP0558908A1 Process and treatment of waste paper |
| 09/08/1993 | EP0493458B1 Press section dewatering fabric |
| 09/07/1993 | US5242585 Apparatus and method for deinking waste paper pulp |
| 09/07/1993 | US5242547 Submerged drainage system for forming and dewatering a web on a fourdrinier fabric |
| 09/05/1993 | CA2090987A1 Process for recycling waste paper |
| 09/02/1993 | WO1993017180A2 Paper machine dryer fabrics containing hollow monofilaments |
| 09/02/1993 | DE4206206A1 Waste paper recycling - uses electrolyte and foaming to develop a flocculant to remove dirt as a scum from the surface of processing water |
| 09/02/1993 | CA2130756A1 Paper machine dryer fabrics containing hollow monofilaments |
| 08/31/1993 | US5240763 Dimensionally stable papermakers fabric |
| 08/31/1993 | US5240621 Centrifuging |
| 08/26/1993 | DE4304758A1 Double layer fourdrinier for paper-making machine - has structured weave to give equal warp use in both layers for supply from a common beam |