EP 4077790 A1 20221026 - METHOD FOR PRODUCING SPUNBONDED FABRIC
Title (en)
METHOD FOR PRODUCING SPUNBONDED FABRIC
Title (de)
VERFAHREN ZUR HERSTELLUNG VON SPINNVLIES
Title (fr)
PROCÉDÉ DE PRODUCTION DE TISSU NON TISSÉ
Publication
Application
Priority
- EP 19217034 A 20191217
- EP 2020085772 W 20201211
Abstract (en)
[origin: WO2021122378A1] The invention relates to a method (100, 101) for producing spunbonded fabrics (1.1, 1.2, 1.3) and to an apparatus (200, 201) for producing spunbonded fabrics (1.1, 1.2, 1.3), wherein, in the method (100, 101), a spinning compound (2) is extruded into filaments (5.1, 5.2, 5.3) through a multiplicity of nozzle holes (4.1, 4.2, 4.3) at least of a first spinneret (3.1) and of a second spinneret (3.2) and the filaments (5.1, 5.2, 5.3) are each drafted in the extrusion direction, wherein the filaments (5.1) of the first spinneret (3.1), in order to form a first spunbonded fabric (1.1), are laid on the conveyor belt (9) and the filaments (5.2) of the second spinneret (3.2), in order to form a second spunbonded fabric (1.2) over the first spunbonded fabric (1.1), are laid on the conveyor belt (9) in order to obtain a multilayer spunbonded fabric (10). In order to increase the throughput of the method, it is proposed that the multilayer spunbonded fabric (10) is separated in a subsequent step into at least the first spunbonded fabric (1.1) and second spunbonded fabric (1.2) and the first and second spunbonded fabrics (1.1, 1.2), following separation, each individually undergo water-jet consolidation (15.1, 15.2) and optionally drying (12), and/or are each individually wound up.
IPC 8 full level
D04H 3/16 (2006.01); B32B 5/02 (2006.01); D01D 5/098 (2006.01); D01D 5/14 (2006.01); D01F 2/00 (2006.01); D04H 3/013 (2012.01); D04H 3/11 (2012.01); D04H 13/00 (2006.01)
CPC (source: EP US)
D01D 5/06 (2013.01 - US); D01D 5/098 (2013.01 - EP); D01D 5/14 (2013.01 - EP US); D01F 2/00 (2013.01 - EP US); D04H 3/013 (2013.01 - US); D04H 3/11 (2013.01 - EP US); D04H 3/16 (2013.01 - EP US); D04H 13/00 (2013.01 - EP US); D10B 2201/22 (2013.01 - US)
Citation (search report)
See references of WO 2021122378A1
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)
WO 2021122378 A1 20210624; CN 115066525 A 20220916; EP 4077790 A1 20221026; TW 202130874 A 20210816; US 2023051927 A1 20230216
DOCDB simple family (application)
EP 2020085772 W 20201211; CN 202080096900 A 20201211; EP 20821213 A 20201211; TW 109144072 A 20201214; US 202017787028 A 20201211