US 12,220,895 B2
Multilayer facer
Souvik Nandi, Waxhaw, NC (US); Glenda B Bennett, Toledo, OH (US); and Thomas Matthews, Liberty Center, OH (US)
Assigned to Johns Manville, Denver, CO (US)
Filed by JOHNS MANVILLE, Denver, CO (US)
Filed on Mar. 22, 2024, as Appl. No. 18/613,214.
Application 18/613,214 is a division of application No. 16/742,142, filed on Jan. 14, 2020, granted, now 11,951,712.
Application 16/742,142 is a division of application No. 15/626,495, filed on Jun. 19, 2017, granted, now 10,569,508, issued on Feb. 25, 2020.
Prior Publication US 2024/0227362 A1, Jul. 11, 2024
Int. Cl. B32B 41/00 (2006.01); B29C 37/00 (2006.01); B29C 70/06 (2006.01); B29C 70/08 (2006.01); B29C 70/36 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 13/14 (2006.01); B32B 17/06 (2006.01); B32B 21/02 (2006.01); B32B 21/10 (2006.01); B32B 37/00 (2006.01); B32B 38/08 (2006.01); E04C 2/16 (2006.01); B29K 105/06 (2006.01); B29K 309/08 (2006.01); B29L 31/10 (2006.01)
CPC B32B 17/06 (2013.01) [B29C 37/0025 (2013.01); B29C 70/06 (2013.01); B29C 70/08 (2013.01); B29C 70/36 (2013.01); B32B 5/022 (2013.01); B32B 5/26 (2013.01); B32B 13/14 (2013.01); B32B 21/02 (2013.01); B32B 21/10 (2013.01); B32B 37/0038 (2013.01); B32B 38/08 (2013.01); E04C 2/16 (2013.01); B29K 2105/06 (2013.01); B29K 2309/08 (2013.01); B29L 2031/10 (2013.01); B32B 2255/02 (2013.01); B32B 2255/26 (2013.01); B32B 2260/023 (2013.01); B32B 2260/046 (2013.01); B32B 2262/10 (2013.01); B32B 2262/101 (2013.01); B32B 2262/108 (2013.01); B32B 2264/10 (2013.01); B32B 2264/104 (2013.01); B32B 2305/28 (2013.01); B32B 2305/72 (2013.01); B32B 2307/3065 (2013.01); B32B 2307/50 (2013.01); B32B 2307/712 (2013.01); B32B 2307/724 (2013.01); B32B 2419/00 (2013.01); B32B 2607/00 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A construction board comprising:
a core layer;
a glass facer coupled to the core layer, the glass facer comprising:
a first layer of non-woven web of fibers comprising a first group of coarse glass fibers have an average fiber diameter from about 8 μm to about 25 μm;
a second layer of non-woven web of fibers comprising a second group of coarse glass fibers mixed with glass microfibers having an average diameter from about 0.5 μm to about 6 μm; and
a binder configured to simultaneously bind the first group of coarse fibers in the first layer together, the second group of coarse glass fibers and glass microfibers in the second layer together, and the first layer to the second layer;
wherein a material of the core layer is disposed within the first layer of non-woven web of fibers, and wherein the material of the core layer is partially disposed within the second layer of non-woven web of fibers without penetrating through the second layer an exterior surface of the second layer.