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)
07/1990
07/31/1990CA1272054A1 Headbox for the production of fibrous stock webs
07/31/1990CA1272004A1 Process and apparatus for removing ink from wastepaper
07/25/1990WO1990008645A1 An apparatus for dewatering and squeezing material
07/25/1990EP0280094B1 Filter segment for a filter for thickening a fibrous suspension
07/25/1990CA2025769A1 Apparatus for dewatering and squeezing material
07/24/1990WO1990008222A1 Adjustment gear assembly
07/24/1990US4943476 Water removal on papermachine through riblet effect
07/24/1990CA2025894A1 Adjustment gear assembly
07/19/1990DE4000558A1 Paper-making with application of pulp suspension to a sieve wire - with addn. of enzyme to recirculation water passing through wire to cleave deleterious dissolved substances such as hemicellulose
07/18/1990EP0295239B1 Disk screen improvement for chip screening efficiency
07/18/1990CN1043916A Jointing of fabric ends
07/17/1990US4941950 Headbox with grooved trailing element
07/17/1990US4941514 Multi-weft paper machine cloth with intermediate layer selected to control permeability
07/17/1990US4941239 Method to reduce forming fabric edge curl
07/17/1990CA1271655A1 Roll for processing a web or strip of material
07/16/1990CA2007774A1 Method for delivering pulp onto the wire of a paper machine
07/11/1990CN1008774B Method and apparatus for headbox jet velocity measurement
07/10/1990US4940630 Base fabric structures for seamed wet press felts
07/10/1990US4940515 Imbedded mesh in suction box cover
07/10/1990US4940512 Cross-directional distribution of additives in synthetic papers
07/10/1990CA1271354A1 Headbox for paper machine
07/10/1990CA1271353A1 Enclosed shoe press
07/04/1990EP0376639A2 Filter deck assembly
07/03/1990US4938269 Papermaker's felt seam with different loops
07/03/1990CA1271072A1 Front wall and support arrangement at the headbox of a papermaking machine
06/1990
06/27/1990EP0374646A2 Process for the manufacture of stable water-oil emulsions of hydrolysed N-vinyl amide polymers, and use thereof
06/26/1990CA1270786A1 Roll with an arched shaft
06/21/1990DE3841860A1 Bottom lip on the flow box of a paper machine
06/21/1990DE3841859A1 Front wall of a paper machine flow box
06/20/1990CN1043178A Method and device in formation of paper or board web
06/20/1990CA2004144A1 Preparation of stable water-in-oil emulsions of hydrolyzed polymers of n-vinylamides and their use
06/19/1990US4934414 Double-layer papermaking fabric
06/14/1990WO1990006397A1 Paper machine felts
06/14/1990WO1990006386A1 Seam construction for papermaking fabrics
06/13/1990EP0373133A2 Method and device in the formation of a paper or board web
06/13/1990EP0372815A2 Apparatus for guiding wires of a paper machine former
06/13/1990EP0372769A1 Paper machine felts
06/13/1990EP0268769B1 Roll for the pressure treatment of webs
06/06/1990EP0371786A2 Web forming method and apparatus
06/06/1990EP0371066A1 Method and apparatus for controlling the production of refined stock.
06/06/1990EP0323468B1 Headbox
06/06/1990CN1042744A Former for forming paper web
06/06/1990CN1008284B Web forming apparatus
06/05/1990US4931142 Long-nip roll press with eccentric travel path of press shell
06/05/1990US4931140 Method and a device for cutting a web in a paper machine by means of a water jet
06/01/1990CA2004174A1 Method and device in the formation of a paper or board web
06/01/1990CA2004124A1 Apparatus for guiding wires of a paper machine former
06/01/1990CA2004123A1 Web forming method and device
05/1990
05/29/1990US4928737 Fabric for the sheet forming section of a papermaking machine
05/28/1990CA2003910A1 Paper machine felts
05/23/1990EP0369611A2 Apparatus for thickening pulp and paper stock
05/23/1990EP0369296A2 Paper machine twin-wire former
05/23/1990EP0202223B1 Apparatus for thickening and refining fibre-pulp suspensions
05/23/1990DE3937652A1 Vorrichtung zum gleichsinnigen aufbringen eines vliesbandes auf eine bewegte traegerbahn Apparatus for the intimate apply a fleece band on a moving traegerbahn
05/22/1990US4927499 Apparatus for stabilizing the jet flow exiting a headbox of a paper machine
05/22/1990US4926533 Paper-making wire repair kit
05/15/1990CA1269025A1 Woven multilayer papermaking fabric having increased stability and permeability and method
05/09/1990EP0367740A2 Paper machine fabrics having controlled release
05/09/1990EP0367614A2 Jointing of fabric ends
05/09/1990EP0367520A2 Improvements in apparatus for forming watermarks in paper
05/09/1990EP0366768A1 Headbox for paper-making machines
05/09/1990EP0163738B1 Method of and apparatus for adjusting amount of water contained in paper sheet in drying step in papermaking process
05/08/1990US4923740 Multilayer forming fabric with high open area
05/08/1990US4923569 Hydraulic headbox with air attenuation chamber located under the stock flow route
05/08/1990CA1268734A1 Sorter for paper pulp suspensions
05/04/1990CA2001994A1 Jointing of fabric ends
05/03/1990CA2002118A1 Apparatus for forming watermarks in paper
05/02/1990CN2056678U High pressure net washing device
05/02/1990CN1007789B Disc screen with decreasing dap wide and screening method
05/01/1990US4921750 Papermaker's thru-dryer embossing fabric
05/01/1990US4921573 Dilution of the dewatered waste paper
05/01/1990US4920638 Method and device for the production of wire jointed band
05/01/1990CA1268395A1 Papermachine clothing
05/01/1990CA1268373A1 The production of tissue paper or porous batt using a papermachine screen
04/1990
04/26/1990DE3835903A1 System for charging a multilayer flowbox for a paper machine
04/24/1990US4919336 Papermaking machine
04/24/1990CA1268068A1 Spiral wire belt
04/24/1990CA1268062A1 Cylinder with rotating band
04/22/1990CA2000326A1 Headbox
04/19/1990DE3835447A1 Expanding roller for use in the wet sector
04/18/1990EP0364242A2 Headbox
04/18/1990EP0364066A1 Seam construction for papermakers fabric
04/18/1990CN2056163U Glass face plate for vacuum hydro-extracting box of paper machine
04/17/1990US4917937 Cloth for a paper machine
04/17/1990US4917766 Hybrid former for a paper machine
04/11/1990EP0290653B1 Material web
04/10/1990USRE33195 Fabrics for papermaking machines
04/10/1990US4915791 Roll with blades rotatably mounted within it in the forming section of a paper machine
04/10/1990US4915789 Apparatus for adjusting a diaphragm blade
04/03/1990CA1267314A1 Method for producing felt for papermaking
04/03/1990CA1267313A1 Roll press having an extended nip press with inflatable press jacket
03/1990
03/27/1990US4910842 Roll for the pressure treatment of webs of material
03/27/1990CA1267016A1 Immediate feedback control of a pulp refiner
03/21/1990CN2054804U Shaped-by-welding stainless steel paper machine net cage
03/21/1990CN1040556A Roll
03/20/1990US4909906 Cover piece for a suction box with wavelike or zigzag passage
03/20/1990US4909904 Beveled feed lines
03/20/1990US4909903 Wet press nip with nonrotating adjustable belt exit guides
03/20/1990US4909284 Double layered papermaker's fabric
03/20/1990US4908896 Backflushing pressure diffuser screens
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