Global Patent Index - EP 0824160 B1

EP 0824160 B1 2001-12-05 - Process for the manufacture of paper making pulp

Title (en)

Process for the manufacture of paper making pulp

Title (de)

Verfahren zur Herstellung von Papiermasse

Title (fr)

Procédé de fabrication de pâte à papier

Publication

EP 0824160 B1 (DE)

Application

EP 97112494 A

Priority

DE 19632865 A

Abstract (en)

[origin: EP0824160A1] In a process for making paper pulp containing fibres from annual plants or secondary products, the fibres are shortened before the bleaching stage to a length which enables a homogeneous, pumpable suspension of them to be prepared. Also claimed is a process in which the fibres and the water are simultaneously introduced into a mixing device, briefly centrifuged, and fed to a refiner. Further claimed is a similar process in which the fibres are shortened to a length which enables a suspension of them to be processed in conventional pumps.

IPC 1-7 (main, further and additional classification)

D21H 11/12; D21C 9/00

IPC 8 full level (invention and additional information)

D21C 5/00 (2006.01); D21C 9/00 (2006.01); D21H 11/12 (2006.01)

CPC (invention and additional information)

D21C 5/00 (2013.01); D21C 9/007 (2013.01); D21H 11/12 (2013.01)

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0824160 A1 19980218; EP 0824160 B1 20011205; AT 210219 T 20011215; DE 19632865 A1 19980219; NO 322526 B1 20061016; NO 973596 A 19980216; NO 973596 D0 19970805; US 5976320 A 19991102

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