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
Fulltext...
Hierarchy...
Expanded...
D21F 3/02
)
D21F 1/02
·
Head boxes of Fourdrinier machines
D21F 1/06
·
Regulating pulp flow
D21F 1/10
·
Wire-cloths
(production of wire-cloths
Fulltext...
Hierarchy...
Expanded...
B21F
)
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
Fulltext...
Hierarchy...
Expanded...
D21F 3/02
)
D21F 1/66
·
Pulp catching, de-watering, or recovering
;
Re-use of pulp-water
P:40
D21F 2/00
Transferring 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
Making discontinuous sheets of paper, pulpboard, or cardboard, or of wet web, for fibreboard production
(making discontinuous sheets of board in moulds
Fulltext...
Hierarchy...
Expanded...
D21J
; drying paper, pulpboard, or cardboard, in discontinuous-sheet form
Fulltext...
Hierarchy...
Expanded...
F26B
)