IPC-Stelle: D21B 1/30 [Version 2006.01]

SymbolTypTitel
DSKSECTION D — TEXTILES; PAPER
D21USKPAPER
D21KLPAPER-MAKING; PRODUCTION OF CELLULOSE
D21BUKLFIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
D21B 1/00HGRFibrous raw materials or their mechanical treatment (beaters D21D 1/00)
D21B 1/02UGR1
.Pretreatment of the raw materials by physical or chemical means (removal of bark B27L)
D21B 1/04UGR1
.by dividing raw materials into small particles, e.g. fibres (breaking-up or cutting wood or the like by dry methods B27L; disintegrating peat C10F 7/02; obtaining fibres mechanically for spinning from rags, peat, or the like D01B)
D21B 1/06UGR2
. .by dry methods
D21B 1/08UGR3
. . .the raw material being waste paper (chemical part D21C 5/02); the raw material being rags
D21B 1/10UGR4
. . . .by cutting actions
D21B 1/12UGR2
. .by wet methods, by the use of steam
D21B 1/14UGR3
. . .Disintegrating in mills (in general B02C)
D21B 1/16UGR4
. . . .in the presence of chemical agents
D21B 1/18UGR4
. . . .in magazine-type machines
D21B 1/20UGR5
. . . . .with chain feed
D21B 1/22UGR5
. . . . .with screw feed
D21B 1/24UGR5
. . . . .of the pocket type
D21B 1/26UGR4
. . . .Driving or feeding arrangements
D21B 1/28UGR4
. . . .Dressers for mill stones, combined with the mill
D21B 1/30UGR3
. . .Defibrating by other means
D21B 1/32UGR4
. . . .of waste paper
D21B 1/34UGR4
. . . .Kneading or mixing; Pulpers
D21B 1/36UGR4
. . . .Explosive disintegration by sudden pressure reduction
D21B 1/38UGR1
.Conserving the finely-divided cellulosic material