D
SECTION D — TEXTILES; PAPERS
  
PAPER
 D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
 D21F
PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER ON THEM
 D21F 1/00
Wet end of machines for making continuous webs of paper
 D21F 1/02
·  Head boxes of Fourdrinier machines
 D21F 1/04
·  Head boxes of cylinder machines
 D21F 1/06
·  Regulating pulp flow
 D21F 1/08
·  Regulating consistency
 D21F 1/10
·  Wire-cloths (production of wire-cloths B21F)
 D21F 1/12
·  ·  Seams thereof
 D21F 1/14
·  ·  ·  welded
 D21F 1/16
·  ·  ·  sewn
 D21F 1/18
·  Shaking-apparatus for wire-cloths and associated parts
 D21F 1/20
·  ·  in Fourdrinier machines
 D21F 1/22
·  ·  in cylinder machines
 D21F 1/24
·  Tilting, raising and lowering mechanisms for wire-cloths
 D21F 1/26
·  ·  in Fourdrinier machines
 D21F 1/28
·  ·  in cylinder machines
 D21F 1/30
·  Protecting wire-cloths from mechanical damage
 D21F 1/32
·  Washing wire-cloths or felts
 D21F 1/34
·  Construction or arrangement of spraying pipes
 D21F 1/36
·  Guiding mechanisms (suction rolls D21F 3/10)
 D21F 1/38
·  ·  Pads
 D21F 1/40
·  ·  Rolls
 D21F 1/42
·  ·  Jets
 D21F 1/44
·  Watermaking devices
 D21F 1/46
·  ·  Dandy rolls
 D21F 1/48
·  Suction apparatus (suction rolls D21F 3/10)
 D21F 1/50
·  ·  Suction boxes with rolls
 D21F 1/52
·  ·  Suction boxes without rolls
 D21F 1/54
·  Skimming devices, e.g. froth ledges
 D21F 1/56
·  Deckles frame arrangements
 D21F 1/58
·  Deckle straps
 D21F 1/60
·  Cylinder moulds
 D21F 1/62
·  Sand traps
 D21F 1/64
·  Magnetic separators
 D21F 1/66
·  Pulp catching, de-watering, and recovering; Re-use of pulp-water
 D21F 1/68
·  ·  using hydrocyclones (hydrocyclones B04C)
 D21F 1/70
·  ·  by flotation
 D21F 1/72
·  ·  using funnels
 D21F 1/74
·  ·  using cylinders
 D21F 1/76
·  ·  ·  with suction
 D21F 1/78
·  ·  ·  with pressure
 D21F 1/80
·  ·  using endless screening belts
 D21F 1/82
·  ·  adding fibre agglomeration compositions
 D21F 2/00
Transferring webs from wet ends to press sections (handling webs in general B65H)
 D21F 3/00
Press section of machines for making continuous webs of paper
 D21F 3/02
·  Wet presses
 D21F 3/04
·  ·  Arrangements thereof
 D21F 3/06
·  ·  Means for regulating the pressure
 D21F 3/08
·  ·  Pressure rolls
 D21F 3/10
·  ·  Suction rolls, e.g. couch rolls
 D21F 5/00
Dryer section of machines for making continuous webs of paper
 D21F 5/02
·  Drying on cylinders
 D21F 5/04
·  ·  on two or more drying cylinders
 D21F 5/06
·  ·  Regulating temperature
 D21F 5/08
·  ·  Arrangement of steam points in the cylinders
 D21F 5/10
·  ·  Removing condensate from the interior of the cylinders
 D21F 5/12
·  Festoon drying
 D21F 5/14
·  Drying webs by applying vacuum
 D21F 5/16
·  Drying webs by electrical heating
 D21F 5/18
·  Drying webs by hot air
 D21F 5/20
·  Waste heat recovery
 D21F 7/00
Other details of machines for making continuous webs of paper
 D21F 7/02
·  Mechanical driving arrangements
 D21F 7/04
·  Paper-break control devices
 D21F 7/06
·  Indicating or regulating the thickness of the layer; Signal devices
 D21F 7/08
·  Felts
 D21F 7/10
·  ·  Seams thereof
 D21F 7/12
·  ·  Drying
 D21F 9/00
Complete machines for making continuous webs of paper
 D21F 9/02
·  of the Fourdrinier type
 D21F 9/04
·  of the cylinder type
 D21F 11/00
Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines
 D21F 11/02
·  of the Fourdrinier type
 D21F 11/04
·  ·  paper or board consisting of two or more layers
 D21F 11/06
·  of the cylinder type
 D21F 11/08
·  ·  paper or board consisting of two or more layers
 D21F 11/10
·  Making imitation mould-made paper
 D21F 11/12
·  Making corrugated paper or board
 D21F 11/14
·  Making cellulose wadding, filter or blotting paper
 D21F 11/16
·  Making paper strips for spinning or twisting
 D21F 13/00
Making discontinuous sheets of paper, pulpboard or cardboard, or of wet web for fibreboard production (making discontinuous sheets of board in moulds D21J; drying paper, pulpboard, or cardboard, in discontinuous sheet form F26B)
 D21F 13/02
·  Making hand-made paper
 D21F 13/04
·  on cylinder board machines
 D21F 13/06
·  ·  Format rolls
 D21F 13/08
·  ·  ·  Automatic cut-off rolls
 D21F 13/10
·  using board presses
 D21F 13/12
·  ·  Platen presses