| Patents for D21F 1 - Wet end of machines for making continuous webs of paper (14,078) |
|---|
| 05/05/1981 | CA1100311A1 Yankee dryer |
| 04/29/1981 | EP0027716A1 Dryer felt fabric |
| 04/28/1981 | CA1100017A1 Papermaking fabrics |
| 04/28/1981 | CA1099972A1 Paper machine screen and process for production thereof |
| 04/21/1981 | US4263362 Improved processability, for woven materials |
| 04/21/1981 | US4262700 Broad-band pulsation attenuator |
| 04/21/1981 | CA1099588A1 Equipment for dehydrating runs of fibrous material |
| 04/21/1981 | CA1099551A1 Extended nip press for a paper machine |
| 04/15/1981 | EP0027033A1 Papermaking apparatus and method |
| 04/14/1981 | US4261392 Dryer felt having soft, bulky surface |
| 04/07/1981 | CA1098748A1 Suspension device for a headbox for paper and pulp machines |
| 03/25/1981 | EP0025463A1 Composition for use with papermaking fillers and methods of preparing filler and papermaking therewith |
| 03/24/1981 | CA1098154A1 Shower nozzle for fabric conditioner |
| 03/24/1981 | CA1097967A1 Twin-wire web forming part in a paper machine |
| 03/17/1981 | US4256537 Apparatus for stretching an endless web |
| 03/10/1981 | US4254561 Drying cylinder for a paper-making machine |
| 03/03/1981 | US4254255 Aqueous reaction of polyamine with alkylene dihalide in presence of emulsifier |
| 03/03/1981 | CA1096675A1 Headbox for a paper machine |
| 03/03/1981 | CA1096649A1 Method for reconditioning dryer screens |
| 02/25/1981 | EP0024205A1 Apparatus and method for maintaining the permeability of paper and board machine felts |
| 02/24/1981 | US4252184 Control of oil distribution in heated embossing rolls |
| 02/24/1981 | US4251928 Metal impregnated dryer fabric |
| 02/24/1981 | US4251927 Paper drier drum |
| 02/24/1981 | CA1096515A1 Process and installation for eliminating by flotation impurities in the form of solid particles contained in a liquid |
| 02/24/1981 | CA1096274A1 Non-twill paperforming fabric |
| 02/24/1981 | CA1096220A1 Quick attaching means for air cushion dampers, covers, bottom plates or equivalent of the headbox in a paper machine |
| 02/17/1981 | US4251588 Hollow monofilaments in paper-making belts |
| 02/17/1981 | US4250822 Low bulk, pin-type seam for use in paper making equipment fabrics, such as dryer felts |
| 02/17/1981 | US4250702 Multifilament thread and method of forming same |
| 02/17/1981 | CA1095763A1 Paper machine headbox |
| 02/10/1981 | US4250299 Retention agents and drainage accelerators for papermaking |
| 02/10/1981 | US4250269 Water-soluble mixtures of quaternary ammonium polymers, nonionic and/or cationic vinyl-addition polymers, and nonionic and/or cationic surfactants |
| 02/10/1981 | US4249653 Wire mesh band |
| 02/10/1981 | US4249290 Controlled deflection roll |
| 02/10/1981 | CA1095304A1 Wet method of preparing fiberboard products in a substantially closed and balanced white water system |
| 02/03/1981 | CA1094854A1 Two-sided drainage in a roll-type twin-wire former |
| 01/20/1981 | CA1093940A1 Method of producing a seam in double-layer forming fabrics |
| 01/13/1981 | US4244084 Jointing of fabric ends |
| 01/06/1981 | US4243483 Head box for a paper making machine with a guide surface adjustably tensioned |
| 01/06/1981 | US4243482 Forming paper using a curved fin to facilitate web transfer |
| 01/06/1981 | CA1092869A1 Supports for fourdrinier sections of paper making machines and a method of replacing same |
| 12/30/1980 | CA1092681A1 Control system for a multi-channel paper machine distributor |
| 12/30/1980 | CA1092404A1 Paper machine headbox having a damping system for pressure variations in a pulp suspension flow |
| 12/30/1980 | CA1092403A1 Tissue paper machine |
| 12/23/1980 | US4240872 Suspension device for a headbox for paper and pulp machines |
| 12/23/1980 | US4240871 Paper forming roll construction |
| 12/23/1980 | CA1092005A1 Dryer fabric |
| 12/16/1980 | US4239065 Papermachine clothing having a surface comprising a bilaterally staggered array of wicker-basket-like cavities |
| 12/11/1980 | WO1980002703A1 Method for the production of a link-belt and a link-belt produced thereby |
| 12/09/1980 | US4238287 Extended nip press with transverse stiffening means in the belt |
| 12/09/1980 | US4238286 Dewatering table bar for the wire cloth or felt in a pulp-dewatering machine |
| 12/09/1980 | US4238284 Method for dewatering a tissue web |
| 11/27/1980 | WO1980002575A1 Method and device in a paper making machine |
| 11/25/1980 | US4235667 Drainage |
| 11/25/1980 | US4235124 Counterbalanced roller for paper machines |
| 11/18/1980 | US4234379 Process for producing a uniform fiber dispersion and machine made light weight glass fiber web material |
| 11/18/1980 | CA1089687A1 Pulp feed for a papermaking machine |
| 11/11/1980 | US4232455 Dryer drum condensate removal apparatus |
| 11/11/1980 | US4232435 Stretching machine for treating removable belts supported on rollers |
| 11/11/1980 | CA1089372A1 Method of and apparatus for flow spreading |
| 11/04/1980 | US4232092 Machining |
| 11/04/1980 | US4231401 Fabric for papermaking machines |
| 11/04/1980 | CA1088789A1 Means that provide a seal for the covers of suction boxes in papermaking machines, and covers of suction boxes that adopt said improvements |
| 11/04/1980 | CA1088788A1 Double-wire paper-making machine |
| 11/04/1980 | CA1088745A1 Web drying roll |
| 10/29/1980 | EP0018200A1 Conveying and like structures |
| 10/29/1980 | EP0017722A1 Straining belt made of heat-settable synthetic helical threads, and method of making the same |
| 10/21/1980 | US4229254 Extended nip press with bias ply reinforced belt |
| 10/21/1980 | US4229253 Extended nip press with special belt reinforcement |
| 10/21/1980 | CA1087835A1 Procedure for accomplishing closed conduction of the paper web in the initial part of the drying section in a paper machine |
| 10/14/1980 | CA1087430A1 Paper machine having a headbox provided with an air tank |
| 10/14/1980 | CA1087390A1 Condensate control for dryer drum |
| 09/30/1980 | US4225386 Headbox for a paper machine |
| 09/30/1980 | US4225382 Method of making ply-separable paper |
| 09/23/1980 | US4224372 Interlayer spacing filled by thermoplastic resin foam |
| 09/23/1980 | US4224105 Apparatus for simultaneously covering each of a plurality of elongated materials with uniformly weighted pulp insulation |
| 09/17/1980 | EP0015670A1 Process and apparatus for controlling the deposition of a liquid onto a moving surface |
| 09/09/1980 | US4221635 Pulp feed for a papermaking machine |
| 09/09/1980 | US4221634 Method of treating papermaking white water |
| 09/09/1980 | US4221630 Wet method of preparing fiberboard products in a substantially closed and balanced white water system |
| 09/09/1980 | CA1085208A1 Water-removal foils and to suction boxes covers for paper making machines and water-removal foils and suction boxes covers thus improved |
| 09/02/1980 | US4220532 Flotation purification apparatus |
| 09/02/1980 | US4220502 Twin-wire web forming section in a paper machine |
| 09/02/1980 | CA1084751A1 Headbox damping device for a paper making machine |
| 09/02/1980 | CA1084750A1 Means for damping the pressure disturbances in the pulp suspension flow in a paper machine |
| 09/02/1980 | CA1084749A1 Roller |
| 08/26/1980 | US4219340 Method and apparatus for outflowing liquids from chamber maintained under vacuum |
| 08/26/1980 | CA1084319A1 Web spreader and guide |
| 08/26/1980 | CA1084318A1 Microturbulence generator for papermachine headbox |
| 08/20/1980 | EP0014448A1 Process and apparatus for deinking fibrous suspensions |
| 08/19/1980 | CA1083869A1 Web transfer system |
| 08/06/1980 | EP0013994A1 Multi-ply endless drainage screen and method for making endless a multi-ply drainage screen |
| 08/05/1980 | US4216056 Paper machine having a water extraction box extension |
| 08/05/1980 | CA1082966A1 Damping means in a pipe system delivering pulp suspension to a headbox |
| 07/29/1980 | US4214982 Process and device for removing printer's ink from a fiber suspension |
| 07/29/1980 | US4214949 Supporting device for a strainer belt |
| 07/23/1980 | EP0013471A1 Papermaker's fabric and method of making the fabric |
| 07/23/1980 | EP0013400A1 Process for drying moist paper or cardboard webs |
| 07/22/1980 | CA1082019A1 Double filter papermaking machine |
| 07/08/1980 | CA1081016A1 Twin-wire section of a paper machine |