EP 1835075 A1 20070919 - Method for making plies for paperboard
Title (en)
Method for making plies for paperboard
Title (de)
Verfahren zur Herstellung einer mehrlagigen Pappe
Title (fr)
Procédé de fabrication d'un carton multicouche
Publication
Application
Priority
US 78362406 P 20060317
Abstract (en)
Methods for improving the internal bond strength of paperboard with greater than 25 percent crosslinked fiber in at least one ply are described. In the methods, additives are added to the slurry in various combinations and order while maintaining the ionic demand of the slurry at less than zero. Paperboard with high ZDT, Scott Bond and Taber Stiffness is obtained.
IPC 8 full level
D21H 23/10 (2006.01)
CPC (source: EP US)
D21H 21/18 (2013.01 - EP US); D21H 23/08 (2013.01 - EP US); D21H 23/10 (2013.01 - EP US); D21H 11/10 (2013.01 - EP US); D21H 11/20 (2013.01 - EP US); D21H 17/28 (2013.01 - EP US); D21H 17/29 (2013.01 - EP US); D21H 17/44 (2013.01 - EP US); D21H 17/54 (2013.01 - EP US); D21H 17/66 (2013.01 - EP US); D21H 27/30 (2013.01 - EP US); D21H 27/38 (2013.01 - EP US)
Citation (search report)
- [PA] EP 1707672 A2 20061004 - WEYERHAEUSER CO [US]
- [A] EP 0835957 A2 19980415 - FORT JAMES CORP [US]
- [A] US 6413372 B1 20020702 - MALICZYSZYN WALTER [US], et al
- [A] WO 9955964 A1 19991104 - AKZO NOBEL NV [NL], et al
- [A] US 5547541 A 19960820 - HANSEN MICHAEL R [US], et al
- [A] US 2002139502 A1 20021003 - HALLSTROM HANS [SE], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
EP 1835075 A1 20070919; BR PI0702166 A 20071211; CA 2581898 A1 20070917; CN 101054781 A 20071017; JP 2007254948 A 20071004; US 2007215301 A1 20070920
DOCDB simple family (application)
EP 07251134 A 20070316; BR PI0702166 A 20070316; CA 2581898 A 20070315; CN 200710088604 A 20070316; JP 2007069826 A 20070319; US 68674207 A 20070315