	US 12,084,871 B2
	Underlay element for flooring and floor assembly
Per Josefsson, Ramlösa (SE); Richard Olofsson, Helsingborg (SE); and Martin Bjeremyr, Helsingborg (SE)
Assigned to CERALOC INNOVATION AB, Viken (SE)
Filed by Ceraloc Innovation AB, Viken (SE)
Filed on Dec. 20, 2021, as Appl. No. 17/645,082.
Claims priority of application No. 2051516-9 (SE), filed on Dec. 21, 2020.
Prior Publication US 2022/0195740 A1, Jun. 23, 2022
Int. Cl. E04F 15/22 (2006.01); B32B 3/06 (2006.01); B32B 3/18 (2006.01); B32B 5/32 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/32 (2006.01); E04F 15/20 (2006.01)

CPC E04F 15/203 (2013.01) [B32B 3/06 (2013.01); B32B 3/18 (2013.01); B32B 5/32 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/304 (2013.01); B32B 27/32 (2013.01); B32B 2266/025 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/7265 (2013.01); B32B 2307/732 (2013.01); B32B 2471/00 (2013.01)]

19 Claims

1. Underlay element configured to be provided between a floor covering and a subfloor, the underlay element comprising a base matrix and a plurality of restriction members at least partly embedded in said base matrix,

wherein the base matrix comprises a first material comprising a polymeric material, the first material being foamed, the first material being compressible, and the first material having a density of less than 700 kg/m³,

wherein the restriction members comprise a second material, a size of each of the restriction members exceeding 0.25 mm in two or three perpendicular directions, wherein one of these directions is parallel with a thickness direction of the underlay element,

wherein a compression of at least a portion of the underlay element is configured to be restricted by the restriction members, and

wherein the base matrix comprising the first material overlaps the restriction members above and/or below the restriction members in the thickness direction of the underlay element.