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D21F 1/00
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Wet end of machines for making continuous webs of paper |
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D21F 1/02
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Head boxes of Fourdrinier machines |
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D21F 1/04
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Head boxes of cylinder machines |
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D21F 1/06
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Regulating pulp flow |
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D21F 1/08
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Regulating consistency |
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D21F 1/10
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Wire-cloths |
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D21F 1/12
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Seams thereof |
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D21F 1/14
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Seams thereof welded |
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D21F 1/16
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Seams thereof sewn |
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D21F 1/18
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Shaking-apparatus for wire-cloths and associated parts |
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D21F 1/20
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Shaking-apparatus for wire-cloths and associated parts in Fourdrinier machines |
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D21F 1/22
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Shaking-apparatus for wire-cloths and associated parts in cylinder machines |
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D21F 1/24
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Tilting, raising, or lowering mechanisms for wire-cloths |
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D21F 1/26
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Tilting, raising, or lowering mechanisms for wire-cloths in Fourdrinier machines |
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D21F 1/28
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Tilting, raising, or lowering mechanisms for wire-cloths in cylinder machines |
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D21F 1/30
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Protecting wire-cloths from mechanical damage |
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D21F 1/32
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Washing wire-cloths or felts |
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D21F 1/34
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Construction or arrangement of spraying pipes |
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D21F 1/36
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Guiding mechanisms |
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D21F 1/38
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Pads |
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D21F 1/40
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Rolls |
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D21F 1/42
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Jets |
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D21F 1/44
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Watermarking devices |
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D21F 1/46
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Dandy rolls |
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D21F 1/48
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Suction apparatus |
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D21F 1/50
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Suction boxes with rolls |
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D21F 1/52
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Suction boxes without rolls |
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D21F 1/54
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Skimming devices, e.g. froth ledges |
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D21F 1/56
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Deckle frame arrangements |
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D21F 1/58
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Deckle straps |
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D21F 1/60
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Cylinder moulds |
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D21F 1/62
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Sand traps |
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D21F 1/64
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Magnetic separators |
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D21F 1/66
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Pulp catching, de-watering, or recovering; Re-use of pulp-water |
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D21F 1/68
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Pulp catching, de-watering, or recovering; Re-use of pulp-water using hydrocyclones |
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D21F 1/70
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Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation |
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D21F 1/72
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Pulp catching, de-watering, or recovering; Re-use of pulp-water using funnels |
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D21F 1/74
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Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders |
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D21F 1/76
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Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with suction |
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D21F 1/78
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Pulp catching, de-watering, or recovering; Re-use of pulp-water using cylinders with pressure |
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D21F 1/80
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Pulp catching, de-watering, or recovering; Re-use of pulp-water using endless screening belts |
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D21F 1/82
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Pulp catching, de-watering, or recovering; Re-use of pulp-water adding fibre agglomeration compositions |
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D21F 2/00
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Transferring continuous webs from wet ends to press sections |
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D21F 3/00
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Press section of machines for making continuous webs of paper |
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D21F 3/02
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Wet presses |
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D21F 3/04
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Arrangements thereof |
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D21F 3/06
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Means for regulating the pressure |
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D21F 3/08
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Pressure rolls |
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D21F 3/10
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Suction rolls, e.g. couch rolls |
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D21F 5/00
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Dryer section of machines for making continuous webs of paper |
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D21F 5/02
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Drying on cylinders |
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D21F 5/04
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Drying on cylinders on two or more drying cylinders |
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D21F 5/06
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Regulating temperature |
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D21F 5/08
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Arrangement of steam points in the cylinders |
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D21F 5/10
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Removing condensate from the interior of the cylinders |
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D21F 5/12
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Festoon drying |
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D21F 5/14
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Drying webs by applying vacuum |
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D21F 5/16
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Drying webs by electrical heating |
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D21F 5/18
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Drying webs by hot air |
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D21F 5/20
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Waste heat recovery |
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D21F 7/00
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Other details of machines for making continuous webs of paper |
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D21F 7/02
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Mechanical driving arrangements |
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D21F 7/04
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Paper-break control devices |
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D21F 7/06
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Indicating or regulating the thickness of the layer; Signal devices |
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D21F 7/08
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Felts |
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D21F 7/10
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Seams thereof |
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D21F 7/12
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Drying |
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D21F 9/00
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Complete machines for making continuous webs of paper |
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D21F 9/02
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Complete machines for making continuous webs of paper of the Fourdrinier type |
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D21F 9/04
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Complete machines for making continuous webs of paper of the cylinder type |
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D21F 11/00
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Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines |
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D21F 11/02
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Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines of the Fourdrinier type |
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D21F 11/04
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Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines of the Fourdrinier type paper or board consisting of two or more layers |
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D21F 11/06
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Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines of the cylinder type |
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D21F 11/08
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Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines of the cylinder type paper or board consisting of two or more layers |
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D21F 11/10
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Making imitation mould-made paper |
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D21F 11/12
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Making corrugated paper or board |
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D21F 11/14
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Making cellulose wadding, filter- or blotting paper |
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D21F 11/16
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Making paper strips for spinning or twisting |
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D21F 13/00
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Methods or apparatus for making discontinuous sheets of paper, pulpboard, or cardboard, or of wet web, for fibreboard production |
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D21F 13/02
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Making hand-made paper |
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D21F 13/04
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Methods or apparatus for making discontinuous sheets of paper, pulpboard, or cardboard, or of wet web, for fibreboard production on cylinder board machines |
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D21F 13/06
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Format rolls |
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D21F 13/08
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Automatic cut-off rolls |
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D21F 13/10
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Methods or apparatus for making discontinuous sheets of paper, pulpboard, or cardboard, or of wet web, for fibreboard production using board presses |
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D21F 13/12
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Platen presses |
