D
SECTION D — TEXTILES; PAPER
  
PAPER
 D21
PAPER-MAKING; PRODUCTION OF CELLULOSE
 D21F
PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
 D21F
Subclass index
MAKING CONTINUOUS WEBS
Complete machines 9/00
Details
wet end, transfer to press section, press section, dryer section 1/00, 2/00, 3/00, 5/00
other details 7/00
Processes 11/00
MAKING DISCONTINUOUS SHEETS 13/00
P:30 D21F 1/00
Wet end of machines for making continuous webs of paper (suction rolls D21F 3/02)
 D21F 1/02
·  Head boxes of Fourdrinier machines
 D21F 1/06
·  Regulating pulp flow
 D21F 1/10
·  Wire-cloths
 D21F 1/18
·  Shaking-apparatus for wire-cloths and associated parts
 D21F 1/24
·  Tilting, raising, or lowering mechanisms for wire-cloths
 D21F 1/30
·  Protecting wire-cloths from mechanical damage
 D21F 1/32
·  Washing wire-cloths or felts
 D21F 1/48
·  Suction apparatus (suction rolls D21F 3/02)
 D21F 1/66
·  Pulp catching, de-watering, or recovering; Re-use of pulp-water
P:40 D21F 2/00
Transferring continuous webs from wet ends to press sections
P:50 D21F 3/00
Press section of machines for making continuous webs of paper
 D21F 3/02
·  Wet presses
P:60 D21F 5/00
Dryer section of machines for making continuous webs of paper
P:70 D21F 7/00
Other details of machines for making continuous webs of paper
 D21F 7/08
·  Felts
P:20 D21F 9/00
Complete machines for making continuous webs of paper
P:10 D21F 11/00
Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibreboard production, on paper-making machines
P:0 D21F 13/00
Methods or apparatus for 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)