US 11,999,155 B2
Spunbonded laminate
Tobias Wagner, Cologne (DE); Sebastian Sommer, Troisdorf (DE); and Patrick Bohl, Hennef (DE)
Assigned to REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK, Troisdorf (DE)
Filed by Tobias Wagner, Cologne (DE); Sebastian Sommer, Troisdorf (DE); and Patrick Bohl, Hennef (DE)
Filed on Jan. 31, 2022, as Appl. No. 17/589,386.
Claims priority of application No. 102021102287.8 (DE), filed on Feb. 1, 2021.
Prior Publication US 2022/0242090 A1, Aug. 4, 2022
Int. Cl. B32B 5/26 (2006.01); B32B 5/02 (2006.01); B32B 37/10 (2006.01)
CPC B32B 5/267 (2021.05) [B32B 5/022 (2013.01); B32B 37/10 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/124 (2021.05); B32B 2262/16 (2021.05); B32B 2307/718 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A laminate comprising first and second spunbonded nonwoven layers wherein at least one spunbonded nonwoven layer comprises or consists essentially of crimped continuous filaments that are bicomponent filaments of core-sheath configuration and having a first component based on polypropylene and a second component based on polypropylene, a specific density ρ in g/cm3 of the spunbonded nonwoven laminate depending on the surface density of the spunbonded nonwoven laminate lying below a density limit ρG defined by the following equation:
ρG=9 cm−1×surface density g/cm2+0.0393 g/cm3.