EP 1138824 A1 20011004 - Additive composition for the paper industry, and process for using the same

Title (en)

Additive composition for the paper industry, and process for using the same

Title (de)

Additivzusammensetzung für die Papierindustrie, und Verfahren zu ihrer Anwendung

Title (fr)

Formulation d'adjuvants pour l'industrie papetière et procédé de mise en oeuvre d'une telle formulation

Publication

EP 1138824 A1 20011004 (FR)

Application

EP 01400753 A 20010323

Priority

FR 0003698 A 20000323

Abstract (en)

A formulation used in the fabrication of paper or cartons used in humid conditions comprises a clay (45 wt.%), a binder (45 wt.%) and a retention agent (10 wt.%) all in powder form. An INDEPENDENT claim is included for a fabrication process for the paper/carton starting with recycled paper fibres comprising: (i) formation of a thick cake from the fibres; (ii) refining the cake; (iii) formation of a diluted cake; (iv) mixing into the diluted cake additives especially cured starch and a retention agent; (v) formation of a layer; and (vi) drying of the layer.

Abstract (fr)

L'invention concerne une formulation d'adjuvants pour un procédé de fabrication de papier ou de carton par voie humide. La formulation comprend une argile, un liant et agent de rétention. L'invention est caractérisée par : une présentation sous forme de poudre ; et les proportions suivantes en % en poids par rapport au poids de la formulation : argile : sensiblement 45 %, liant : sensiblement 45 %, agent de rétention : sensiblement 10 %. <IMAGE>

IPC 1-7

D21H 17/74; D21H 21/10; D21H 11/14

IPC 8 full level

D21H 11/14 (2006.01); D21H 21/10 (2006.01); D21H 17/28 (2006.01); D21H 17/37 (2006.01); D21H 17/45 (2006.01); D21H 17/68 (2006.01)

CPC (source: EP)

D21H 11/14 (2013.01); D21H 17/74 (2013.01); D21H 21/10 (2013.01); D21H 17/28 (2013.01); D21H 17/375 (2013.01); D21H 17/455 (2013.01); D21H 17/68 (2013.01)

Citation (search report)

[AD] WO 9822653 A1 19980528 - ALLIED COLLOIDS LTD [GB], et al
[A] EP 0580529 A1 19940126 - S N F [FR]

Designated contracting state (EPC)

BE FR NL

DOCDB simple family (publication)

EP 1138824 A1 20011004; FR 2806745 A1 20010928; FR 2806745 B1 20020628

DOCDB simple family (application)

EP 01400753 A 20010323; FR 0003698 A 20000323