US 11,788,208 B2
Continuous-filament spunbond
Morten Rise Hansen, Aalborg (DK); and Sebastian Sommer, Troisdorf (DE)
Assigned to REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK, Troisdorf (DE); and FIBERTEX PERSONAL CARE A/S, Aalborg (DK)
Appl. No. 16/84,048
Filed by Reifenhaeuser GmbH & Co. KG Maschinenfabrik, Troisdorf (DE); and Fibertex Personal Care A/S, Aalborg (DK)
PCT Filed May 17, 2017, PCT No. PCT/EP2017/061877
§ 371(c)(1), (2) Date Sep. 11, 2018,
PCT Pub. No. WO2017/198730, PCT Pub. Date Nov. 23, 2017.
Claims priority of application No. 102016109115.4 (DE), filed on May 18, 2016.
Prior Publication US 2019/0194826 A1, Jun. 27, 2019
Int. Cl. D01F 1/10 (2006.01); D01F 8/06 (2006.01); D04H 3/147 (2012.01); D04H 3/16 (2006.01); D01D 5/098 (2006.01)
CPC D01D 5/0985 (2013.01) [D01F 1/10 (2013.01); D01F 8/06 (2013.01); D04H 3/147 (2013.01); D04H 3/16 (2013.01); D10B 2321/022 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A nonwoven spunbonded of filaments, wherein
the filaments are of continuous, thermoplastic multicomponent and spunbond construction having a core/sheath configuration,
the filaments contain at least one lubricant,
the lubricant is present in the core exclusively or in a quantity of at least 98 wt % of lubricant in the filament,
a mass ratio between the core and the sheath being is from 50:50 to 75:25,
the core consists essentially of homopolypropylene,
the sheath consists essentially of a polypropylene copolymer with a molar mass distribution of 3.5 to 5, or a mixture of homopolypropylene and a polypropylene copolymer with a molar mass distribution of 3.5 to 5, and
the proportion of the lubricant with respect to the overall filament corresponds to 250 to 5500 ppm.