Wet end of machines for making continuous webs of paper

DTEXTILES PAPER D21Papermaking D21FPAPER-MAKING MACHINES METHODS OF PRODUCING PAPER THEREON

D21F1/00Wet end of machines for making continuous webs of paper

D21F1/0009Regulating the freeness of the pulp D21F1/0018Devices for dispensing fibres in a fluid D21F1/0027Screen-cloths D21F1/0036Multi-layer screen-cloths D21F1/0045Triple layer fabrics D21F1/0054Seams thereof D21F1/0063Perforated sheets D21F1/0072Link belts D21F1/0081with single endless strands travelling in generally parallel convolutions D21F1/009Fibre-rearranging devices D21F1/02Head boxes of Fourdrinier machines D21F1/022Means for injecting material into flow within the headbox D21F1/024Details of the feed chamber D21F1/026Details of the turbulence section D21F1/028Details of the nozzle section D21F1/04Head boxes of cylinder machines D21F1/043with immersed cylinders D21F1/046with non-immersed cylinder D21F1/06Regulating pulp flow D21F1/065Shock-absorbing devices D21F1/08Regulating consistency D21F1/10Wire-cloths D21F1/105Multi-layer wire-cloths D21F1/12Seams thereof D21F1/14welded D21F1/16sewn D21F1/18Shaking apparatus for wire-cloths and associated parts D21F1/20in fourdrinier machines D21F1/22in cylinder machines D21F1/24Tilting, raising, or lowering mechanisms for wire-cloths D21F1/26in Fourdrinier machines D21F1/28in cylinder machines D21F1/30Protecting wire-cloths from mechanical damage D21F1/32Washing wire-cloths or felts D21F1/325with reciprocating devices D21F1/34Construction or arrangement of spraying pipes D21F1/345Spraying-pipe cleaners D21F1/36Guiding mechanisms D21F1/365for controlling the lateral position of the screen D21F1/38Pads D21F1/40Rolls D21F1/42Jets D21F1/44Watermarking devices D21F1/46Dandy rolls D21F1/48Suction apparatus D21F1/483Drainage foils and bars D21F1/486adjustable D21F1/50Suction boxes with rolls D21F1/52Suction boxes without rolls D21F1/523Covers thereof D21F1/526consisting of endless moving belts D21F1/54Skimming devices D21F1/56Deckle frame arrangements D21F1/58Deckle straps D21F1/60Cylinder moulds D21F1/62Sand traps D21F1/64Magnetic separators D21F1/66Pulp catching, de-watering, or recovering Re-use of pulp-water D21F1/68using hydrocyclones D21F1/70by flotation D21F1/72using funnels D21F1/74using cylinders D21F1/76with suction D21F1/78with pressure D21F1/80using endless screening belts D21F1/82adding fibre agglomeration compositions