US 12,247,322 B2
Method for producing spunbonded fabric
Ibrahim Sagerer-Foric, Vöcklabruck (AT)
Assigned to Lenzing Aktiengesellschaft, Lenzing (AT)
Appl. No. 17/801,595
Filed by LENZING AKTIENGESELLSCHAFT, Lenzing (AT)
PCT Filed Feb. 24, 2021, PCT No. PCT/EP2021/054497
§ 371(c)(1), (2) Date Aug. 23, 2022,
PCT Pub. No. WO2021/170609, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 20159095 (EP), filed on Feb. 24, 2020.
Prior Publication US 2023/0098304 A1, Mar. 30, 2023
Int. Cl. D01D 5/14 (2006.01); D01D 5/098 (2006.01); D01F 2/00 (2006.01); D04H 3/11 (2012.01); D04H 3/16 (2006.01); D06M 13/525 (2006.01)
CPC D01D 5/0985 (2013.01) [D01D 5/14 (2013.01); D01F 2/00 (2013.01); D04H 3/11 (2013.01); D04H 3/16 (2013.01); D06M 13/525 (2013.01); D10B 2201/22 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A process for producing a spunbonded nonwoven comprising cellulose with an embossing pattern comprising,
extruding a spinning mass through a plurality of nozzle holes of at least one spinneret to form filaments; and
drawing the filaments by a drawing air stream,
wherein, in an extrusion direction, with the filaments being deposited on a perforated conveying device to form the spunbonded nonwoven, the perforated conveying device has an embossing structure with the embossing pattern, the filaments are pressed into the embossing structure by the drawing air stream and a suction device underneath the perforated conveying device, and the spunbonded nonwoven thus formed is provided with the embossing pattern.