Title (en)

A PROCESS FOR RETAINING CALCIUM CARBONATE FILLER IN LIGHTWEIGHT CREPED (TISSUE) PAPER WITHOUT NEGATIVELY AFFECTING THE QUALITY OF THE PAPER

Title (de)

VERFAHREN ZUM HALTEN EINES KALZIUMKARBONATFÜLLSTOFFS IN LEICHTEM GEKREPPTEM (GEWEBE)PAPIER OHNE NEGATIVE BEEINFLUSSUNG DER PAPIERQUALITÄT

Title (fr)

PROCÉDÉ POUR RETENIR UNE CHARGE DE CARBONATE DE CALCIUM DANS UN PAPIER (DE SOIE) CRÊPÉ DE FAIBLE POIDS SANS AVOIR D'INCIDENCE SUR LA QUALITÉ DU PAPIER

Publication

EP 2825700 A1 20150121 (EN)

Application

EP 13708928 A 20130219

Priority

• PT 10617012 A 20120220
• PT 2013000011 W 20130219

Abstract (en)

[origin: WO2013125968A1] The current invention involves a new process for fixing non- cellulosic fillers onto tissue paper between 14 gsm and 50 gsm, either for paper produced from a cellulosic furnish of virgin fibers or for paper produced from a cellulosic furnish of recycled fibers derived from recycled papers. The process consists essentially of introducing in a cellulosic fibrous solution a non-cellulosic filler of calcium carbonate (CaC03) or other, then applying, in sequence, two chemical agents, a micro-particle added before the pressure screen and a polymer in the fibrous solution after the pressure screen. The process did not affect the quality of the paper sheet nor the paper making equipment.

IPC 8 full level

D21H 17/67 (2006.01); D21H 21/10 (2006.01)

CPC (source: EP)

D21H 17/67 (2013.01); D21H 17/675 (2013.01); D21H 17/68 (2013.01); D21H 21/10 (2013.01)

Citation (search report)

See references of WO 2013125968A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

Designated extension state (EPC)

BA ME

DOCDB simple family (publication)

WO 2013125968 A1 20130829; WO 2013125968 A4 20131017; EP 2825700 A1 20150121; PT 106170 A 20130820

DOCDB simple family (application)

PT 2013000011 W 20130219; EP 13708928 A 20130219; PT 10617012 A 20120220