US 12,442,199 B2
Architectural flooring underlayment
Varun Mohan, Lexington, SC (US); Christophe Chaut, Molsheim (FR); Kendall Bush, Rochester Hills, MI (US); Greg Thompson, Simpsonville, SC (US); and William Desmond Boring, Lawrenceville, GA (US)
Assigned to Zephyros, Inc., Romeo, MI (US); and Pak-Lite, Inc., Suwanee, GA (US)
Appl. No. 17/792,244
Filed by Zephyros, Inc., Romeo, MI (US); and PAK-LITE, INC., Suwanee, GA (US)
PCT Filed Jan. 27, 2021, PCT No. PCT/US2021/015156
§ 371(c)(1), (2) Date Jul. 12, 2022,
PCT Pub. No. WO2021/154768, PCT Pub. Date Aug. 5, 2021.
Claims priority of provisional application 62/966,243, filed on Jan. 27, 2020.
Prior Publication US 2023/0085014 A1, Mar. 16, 2023
Int. Cl. E04F 15/20 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 7/12 (2006.01); B32B 9/00 (2006.01); B32B 9/02 (2006.01); B32B 9/04 (2006.01); B32B 21/10 (2006.01); D04H 11/04 (2006.01); E04F 15/18 (2006.01)
CPC E04F 15/203 (2013.01) [B32B 5/022 (2013.01); B32B 5/267 (2021.05); B32B 5/268 (2021.05); B32B 5/269 (2021.05); B32B 7/12 (2013.01); B32B 9/002 (2013.01); B32B 9/02 (2013.01); B32B 9/047 (2013.01); B32B 21/10 (2013.01); D04H 11/04 (2013.01); E04F 15/182 (2013.01); E04F 15/186 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/0284 (2013.01); B32B 2307/102 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/732 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A fibrous structure comprising:
a. a vertically lapped layer having a first surface and a second surface, wherein the vertically lapped layer has a weight of about 110 gsm to about 175 gsm;
b. a facing layer secured to the first surface of the vertically lapped layer, wherein the facing layer includes one or more of a spunbond (S) material, a spunbond and meltblown (SM) material spunbond+meltblown+spunbond (SMS) nonwoven material;
c. a backing layer secured directly or indirectly to the second surface of the vertically lapped layer, wherein the backing layer comprises a spunbond PET material having a weight of about 8 gsm to about 22 gsm;
wherein the fibrous structure has a thickness of about 5 mm or less; and
wherein the fibrous structure is a flooring subassembly adapted to be used in a flooring assembly.