ClassID:

127031

D21H23/18 - CPC Classification

Classification description:

Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added; Addition to the pulp; After-treatment of added substances in the pulp; Controlling the addition by selecting point of addition or time of contact between components Addition at a location where shear forces are avoided before sheet-forming, e.g. after pulp beating or refining

Recent Application in this class: