|
D21B 1/00
|
Fibrous raw materials or their mechanical treatment |
|
D21B 1/02
|
Pretreatment of the raw materials by physical or chemical means |
|
D21B 1/04
|
Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres |
|
D21B 1/06
|
Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods |
|
D21B 1/08
|
Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being rags |
|
D21B 1/10
|
Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by dry methods the raw material being rags by cutting actions |
|
D21B 1/12
|
Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods; by the use of steam |
|
D21B 1/14
|
Disintegrating in mills |
|
D21B 1/16
|
Disintegrating in mills in the presence of chemical agents |
|
D21B 1/18
|
Disintegrating in mills in magazine-type machines |
|
D21B 1/20
|
Disintegrating in mills in magazine-type machines with chain feed |
|
D21B 1/22
|
Disintegrating in mills in magazine-type machines with screw feed |
|
D21B 1/24
|
Disintegrating in mills in magazine-type machines of the pocket type |
|
D21B 1/26
|
Driving or feeding arrangements |
|
D21B 1/28
|
Dressers for mill stones, combined with the mill |
|
D21B 1/30
|
Defibrating by other means |
|
D21B 1/32
|
Defibrating by other means of waste paper |
|
D21B 1/34
|
Kneading or mixing; Pulpers |
|
D21B 1/36
|
Explosive disintegration by sudden pressure reduction |
|
D21B 1/38
|
Conserving the finely-divided cellulosic material |
