Patents
Sitemap › D21 - Paper-making; Production of cellulose › D21F - Paper-making machines; Methods of producing paper thereon › D21F 1 - Wet end of machines for making continuous webs of paper
Patents for D21F 1 - Wet end of machines for making continuous webs of paper (14,078)
06/1980
06/25/1980EP0012519A1 Seam construction in papermakers felts or forming fabrics
06/24/1980US4209360 Two-sided drainage in a roll-type twin-wire former
06/24/1980CA1080016A1 Process for producing a uniform fiber dispersion
06/17/1980CA1079558A1 Papermaking machine
06/11/1980EP0011977A1 Method of making a fabric, and an endless belt therefrom, for a papermaking machine
06/10/1980US4207144 Papermaking machines
06/10/1980US4207007 Liquid-stirring device and installation for treating loose materials
06/10/1980US4206787 Method of providing a seam in double-layer forming fabrics
06/03/1980US4205921 Device for homogenization of a particle filled fluid stream
06/03/1980CA1078788A1 Undersurface feed nozzles and pressurized rejects chamber for a liquid-gas screen
05/1980
05/27/1980CA1078216A1 Device for measuring filtering properties of paper pulp
05/20/1980CA1078082A1 Apparatus for clarification of waste water operating on dissolved air flotation process
05/20/1980CA1077756A1 Pulp feed for a papermaking machine
05/14/1980EP0010924A1 Drainage device for papermaking and other similar machines, and method of making the device
05/13/1980US4202777 Flow distribution means for screening apparatus
05/13/1980US4202724 Quick connect apparatus for headbox components in a paper making machine
05/13/1980US4202382 Dryer felts
05/13/1980US4202113 Paper machine drying section and method for operating same
05/13/1980CA1077318A1 Web forming machines
05/06/1980US4201624 For removing liquid from a traveling fibrous web
05/06/1980CA1076864A1 Headbox flow controls
05/06/1980CA1076862A1 Procedure in the manufacturing of multiply cardboard and web forming unit applying the procedure
05/06/1980CA1076783A1 Procedure in the manufacturing of a covering for a paper machine roll by winding from profiled strip
04/1980
04/30/1980EP0010311A1 Paper forming fabric
04/29/1980CA1076337A1 Edge winding profiled strip on paper machine roll
04/29/1980CA1076336A1 Procedure for locking the covering strip in a grooved and/or ungrooved roll covering in a paper machine
04/22/1980CA1076193A1 Method and apparatus for preventing the adherence of polarized foreign particles to paper machine components
04/22/1980CA1075893A1 Heat transfer roll and method
04/16/1980EP0009909A1 Spray nozzle for a dual-purpose shower system
04/15/1980US4198270 Head box for a paper making machine
04/15/1980CA1075512A1 Flowboxes
04/08/1980US4197159 Flowboxes
04/03/1980WO1980000582A1 Device for repeatedly and automatically determining the dehydrating power of a fibre matierial suspension
04/02/1980EP0009399A1 Improvements in or relating to shower fittings
04/02/1980EP0009228A1 Apparatus for the repeated and automatic determination of the dehydration capacity of a suspension of fibrous matter
04/01/1980US4196248 Papermaking
04/01/1980US4195417 Dryer drum with magnetic spoiler bars
04/01/1980CA1074603A1 Method of and means for papermaking with high consistency fiber suspensions
03/1980
03/25/1980US4194947 Transferring a web from a pick-up fabric to a flow-through drying wire
03/25/1980CA1074162A1 Pulp sheet forming device
03/20/1980WO1980000423A1 Method and device for cleaning suspension fibres
03/18/1980US4193842 Method and apparatus for cleaning paper making felt
03/18/1980CA1073720A1 Pulp washer
03/18/1980CA1073719A1 Papermaker's felt with grooved surface
03/18/1980CA1073718A1 Twin wire free loop web former
03/11/1980US4192050 Method of making a helically grooved roller
03/04/1980US4191612 Dewatering suction apparatus for paper making machine
03/04/1980US4191611 Apparatus for ultrasonically cleaning paper making felt
03/04/1980US4190964 Web drying section for paper machine
03/04/1980CA1072793A1 Headbox and holders for floating slice chamber dividers
02/1980
02/26/1980US4190522 Apparatus for purifying a suspension of fibrous material
02/26/1980US4190204 Shower nozzle for fabric conditioner
02/26/1980CA1072310A1 Nonwoven papermakers felt
02/26/1980CA1072309A1 Process for weaving an openwork rigid fabric and fabric woven thereby
02/20/1980EP0008180A1 Fabrics for papermaking machines
02/20/1980EP0007966A1 High-elasticity press felt
02/19/1980CA1071915A1 Grooved roller
02/19/1980CA1071914A1 Jointing of fabric ends
02/19/1980CA1071913A1 Synthetic papermaking fabric with rectangular threads
02/19/1980CA1071912A1 Method of and means for forming multi-ply paper webs from a single headbox
02/19/1980CA1071892A1 Method and apparatus for accurately measuring the freeness of paper stock in a short time
02/12/1980US4188078 Bearing lubrication system for bowed rolls
02/12/1980US4187594 Roll for pressure treating webs of material
02/12/1980CA1071506A1 Biplanar papermaker's belt
02/05/1980US4186780 Seam construction for multi-layer felts
01/1980
01/23/1980EP0006866A1 A method of producing a seam in double-layer forming fabrics
01/22/1980US4184967 Apparatus for clarifying waste water
01/22/1980US4184915 Permaking machine
01/22/1980US4184519 Fabrics for papermaking machines
01/15/1980US4183149 Web drying roll
01/15/1980US4183148 Paper machine drying section and method of operating the same
01/15/1980CA1069740B Flexible ceramic member and method for making same
01/09/1980EP0006316A1 Papermaking machine
01/08/1980US4182381 Papermakers fabrics
01/08/1980US4182170 Device for cutting a fiber web
01/01/1980US4181568 Headbox for a paper machine for the production of a fiber web of at least two plies
01/01/1980CA1068957A Secondary headbox
12/1979
12/25/1979CA1068524A Blade for paper making machine
12/18/1979US4179332 Apparatus for damping pressure and consistency perturbations in a pulp suspension flow
12/18/1979CA1068143A1 Method and apparatus for paper quality improvement in a fourdrinier paper making machine
12/18/1979CA1068103A1 Method of drying a cardboard or a paper web and drying device for applying this method
12/11/1979CA1067796A1 Paper machine dryer fabric
12/11/1979CA1067795A1 Papermakers' fabrics
11/1979
11/28/1979EP0005691A1 Construction part co-operating with the gauze or felt of a pulp drainage machine, and method of making the same
11/27/1979US4176005 Double filter papermaking machine
11/27/1979CA1066934A1 Headbox for a paper machine for the production of a two- or multi-ply fiber web
11/20/1979CA1066545A1 Vertical twin wire paper machine
11/20/1979CA1066498A1 Paper web streak drying system
11/13/1979US4173904 Apparatus for automatically centering an endless band trained over two rolls
11/13/1979CA1066101A1 Grooved and/or ungrooved roll covering in a paper machine
11/06/1979CA1065662A1 Twin wire former with wire orientation control
11/06/1979CA1065661A1 Pulp feed for a paper making machine
11/06/1979CA1065660A1 Cylinder machine for the manufacture of paper with overthicknesses
10/1979
10/30/1979US4172759 Paper-machine structure and method for subjecting a web to suction
10/23/1979US4172007 Method and apparatus for reliably transporting a web in a paper making machine
10/16/1979US4171009 Forming fabrics for paper-making machines and methods of manufacture thereof
10/16/1979CA1064295A1 Seam for forming wires and dryer felts
10/16/1979CA1064294A1 Apparatus for forming a sheet
10/09/1979CA1063851A1 Traveling wire web former
10/02/1979US4169757 Apparatus for damping pressure fluctuations in pulp suspension flow of paper machines
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