EP 4087967 A1 20221116 - METHOD FOR PRODUCING A COMPOSITE NONWOVEN FABRIC AND DEVICE FOR PRODUCING A COMPOSITE NONWOVEN FABRIC
Title (en)
METHOD FOR PRODUCING A COMPOSITE NONWOVEN FABRIC AND DEVICE FOR PRODUCING A COMPOSITE NONWOVEN FABRIC
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER VERBUNDVLIESWARENBAHN UND VORRICHTUNG ZUR HERSTELLUNG EINER VERBUNDVLIESWARENBAHN
Title (fr)
PROCÉDÉ DE FABRICATION D'UNE NAPPE DE TISSU NON-TISSÉ COMPOSITE ET DISPOSITIF POUR LA FABRICATION D'UNE NAPPE DE TISSU NON-TISSÉ COMPOSITE
Publication
Application
Priority
- DE 102020100472 A 20200110
- EP 2020085108 W 20201208
Abstract (en)
[origin: WO2021139945A1] The invention relates to methods (100a, 100b, 100c) for producing a composite nonwoven fabric (7) with at least two layers (1, 2, 3), wherein a first layer (1, 3) is made of long fibers (4, 6), and a second layer (2) is made of short fibers (5). In a production line (9), the short fibers (5) are attached to the first layer (1, 3) in a wet laid process (103) using a headbox (12) with a rotating or static turbulence generator.
IPC 8 full level
D04H 1/4374 (2012.01); D04H 1/492 (2012.01); D04H 1/498 (2012.01); D04H 1/732 (2012.01); D04H 3/105 (2012.01); D04H 3/11 (2012.01); D04H 3/16 (2006.01); D21F 1/02 (2006.01)
CPC (source: EP US)
D04H 1/4374 (2013.01 - EP US); D04H 1/492 (2013.01 - EP US); D04H 1/498 (2013.01 - EP US); D04H 1/732 (2013.01 - EP US); D04H 3/005 (2013.01 - US); D04H 3/015 (2013.01 - US); D04H 3/105 (2013.01 - EP); D04H 3/11 (2013.01 - EP US); D04H 3/16 (2013.01 - EP US); D04H 18/04 (2013.01 - US); D21F 11/04 (2013.01 - EP)
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 102020100472 A1 20210715; BR 112022013381 A2 20221206; CN 114929959 A 20220819; CN 114929959 B 20231121; EP 4087967 A1 20221116; US 2023340709 A1 20231026; WO 2021139945 A1 20210715
DOCDB simple family (application)
DE 102020100472 A 20200110; BR 112022013381 A 20201208; CN 202080092380 A 20201208; EP 2020085108 W 20201208; EP 20824161 A 20201208; US 202017791214 A 20201208