EP 4367324 A1 20240515 - METHOD AND MACHINE FOR PRODUCING A FIBROUS WEB
Title (en)
METHOD AND MACHINE FOR PRODUCING A FIBROUS WEB
Title (de)
VERFAHREN UND MASCHINE ZUR HERSTELLUNG EINER FASERSTOFFBAHN
Title (fr)
PROCÉDÉ ET MACHINE POUR PRODUIRE UNE BANDE DE MATIÈRE FIBREUSE
Publication
Application
Priority
- DE 102021117647 A 20210708
- EP 2022068508 W 20220705
Abstract (en)
[origin: WO2023280806A1] The invention relates to a method for producing a fibrous web (1), more particularly a tissue web or a nonwoven web, which is formed by means of dry-laying method. In a pressing step, the fibrous web (1) is pressed and consolidated while lying in a press nip (9) between a first support element (2) and a second support element (3), which each have a contact surface (2.1, 3.1) facing the fibrous web (1). The contact surface (2.1) of the at least first support element (2) is designed such that at least one low-pressure zone (4) and at least one high-pressure zone (5) are formed in the fibrous web (1) and such that, in the at least one high-pressure zone (5), a pressure of more than 10 MPa, more particularly of more than 15 MPa, preferably of more than 25 MPa, is applied to the fibrous web (1).
IPC 8 full level
D21F 11/00 (2006.01)
CPC (source: EP US)
D21F 9/00 (2013.01 - US); D21F 11/006 (2013.01 - EP US); D21H 27/002 (2013.01 - US); D21H 27/02 (2013.01 - US)
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
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021117647 A1 20230112; CN 117616169 A 20240227; EP 4367324 A1 20240515; US 2024141590 A1 20240502; WO 2023280806 A1 20230112
DOCDB simple family (application)
DE 102021117647 A 20210708; CN 202280048103 A 20220705; EP 2022068508 W 20220705; EP 22741753 A 20220705; US 202418405613 A 20240105