|
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 waste paperFibrous 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 waste paperFibrous 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 mixingPulpers |
|
D21B 1/36
|
Explosive disintegration by sudden pressure reduction |
|
D21B 1/38
|
Conserving the finely-divided cellulosic material |
