EP 4085169 C0 20240313 - METHOD AND APPARATUS FOR THE PRODUCTION OF TISSUE PAPER
Title (en)
METHOD AND APPARATUS FOR THE PRODUCTION OF TISSUE PAPER
Title (de)
VERFAHREN UND VORRICHTUNG FÜR DIE PRODUKTION VON TISSUE-PAPIER
Title (fr)
PROCÉDÉ ET APPAREIL DE PRODUCTION DE PAPIER MINCE
Publication
Application
Priority
- IT 201900018056 A 20191231
- IB 2020062482 W 20201228
Abstract (en)
[origin: WO2021137133A1] A method for the production of tissue paper (90) with a grammage of less than 100 g/m2 using a single-cylinder machine (10) that comprises a Yankee cylinder or dryer cylinder (2), which comprises: - a distribution step of at least one liquid product on at least one work surface (21) of the cylinder (2) that has a useful width (L) that is adapted to be covered by the paper (90); - a drying step of the paper (90) on the work surface (21) of the cylinder (2) with the at least one chemical product interposed; - a release step of the paper (90) from the work surface (21) of the cylinder (2) by way of a creping blade (3); - a detecting step of at least one process parameter; characterized in that the at least one liquid product is distributed by way of a first series (5) of first atomizer nozzles (5a-5o) which dispense a chemical release product (a) and a second series (6) of second atomizer nozzles (6a-6o) which dispense a chemical adhesion product (b); in the distribution step of the flow rate of the individual atomizer nozzles (5a-5o, 6a-6o) of the first series (5) and of the second series (6) being selectively varied as a function of the at least one process parameter, so as to vary the ratio between the chemical adhesion product (b) and the chemical release product (a) and/or the overall quantity of chemical products (a, b, c) dispensed along the useful width (L) as a function of the at least one process parameter.
IPC 8 full level
D21F 5/18 (2006.01); B31F 1/12 (2006.01); B31F 1/36 (2006.01); D21F 11/14 (2006.01); D21G 9/00 (2006.01); D21H 21/14 (2006.01); D21H 27/00 (2006.01)
CPC (source: EP)
B31F 1/126 (2013.01); B31F 1/36 (2013.01); D21F 5/181 (2013.01); D21F 11/14 (2013.01); D21G 9/0036 (2013.01); D21H 21/146 (2013.01); D21H 27/002 (2013.01)
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
Participating member state (EPC – UP)
AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI
DOCDB simple family (publication)
WO 2021137133 A1 20210708; EP 4085169 A1 20221109; EP 4085169 B1 20240313; EP 4085169 C0 20240313
DOCDB simple family (application)
IB 2020062482 W 20201228; EP 20851298 A 20201228