US 12,109,787 B2
Rigid multilayer decorative surface covering
Mathieu Coquelle, Wiltz (LU); Nicolas Boquillon, Wiltz (LU); and Diego Gourdin, Wiltz (LU)
Assigned to Tarkett GDL, Lentzweiler (LU)
Filed by Tarkett GDL, Lentzweiler (LU)
Filed on Mar. 6, 2023, as Appl. No. 18/178,947.
Claims priority of application No. 501834 (LU), filed on Apr. 12, 2022.
Prior Publication US 2023/0321961 A1, Oct. 12, 2023
Int. Cl. B32B 27/30 (2006.01); B32B 5/30 (2006.01); B32B 27/22 (2006.01); B32B 37/10 (2006.01)
CPC B32B 27/304 (2013.01) [B32B 5/30 (2013.01); B32B 27/22 (2013.01); B32B 37/10 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2272/00 (2013.01); B32B 2305/70 (2013.01); B32B 2307/554 (2013.01); B32B 2307/558 (2013.01); B32B 2307/732 (2013.01); B32B 2451/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rigid multilayer decorative surface covering having a thickness, the surface covering comprising a sandwiched reinforcement composite layer comprising a thermoplastic polymer matrix having a top and a bottom surface, the sandwiched reinforcement composite layer comprising reinforcement layers directly on the top and bottom surfaces, the sandwiched reinforcement composite layer having a thickness comprised in the range from 25% to 85% of the thickness of the rigid multilayer decorative surface covering, wherein the reinforcement layers comprise a woven, fiber material non-woven fiber material, glass or polypropylene, the thermoplastic matrix further comprising two additional reinforcement layers, the two additional reinforcement layers being vertically located at +/−15% relative to the vertical center of the sandwiched reinforcement composite layer.