	US 12,227,456 B2
	Fiber cement products and methods for the production thereof
Ruben Bordin, Mechelen (BE); and Julien Soulhat, Avignon (FR)
Assigned to ETEX SERVICES NV, Kapelle-op-den-Bos (BE); and ETEX BUILDING PERFORMANCE INTERNATIONAL SAS, Avignon (FR)
Appl. No. 17/641,157
Filed by ETEX SERVICES NV, Kapelle-op-den-Bos (BE); and ETEX BUILDING PERFORMANCE INTERNATIONAL SAS, Avignon (FR)
PCT Filed Sep. 4, 2020, PCT No. PCT/EP2020/074802 § 371(c)(1), (2) Date Mar. 8, 2022, PCT Pub. No. WO2021/048020, PCT Pub. Date Mar. 18, 2021.
Application 17/641,157 is a continuation in part of application No. PCT/EP2018/077049, filed on Oct. 4, 2018.
Claims priority of application No. 17195275 (EP), filed on Oct. 6, 2017; and application No. 19196116 (EP), filed on Sep. 9, 2019.
Prior Publication US 2022/0363602 A1, Nov. 17, 2022
Int. Cl. C04B 18/24 (2006.01); B28B 1/16 (2006.01); B28B 1/52 (2006.01); B32B 7/02 (2019.01); B32B 13/02 (2006.01); B32B 13/04 (2006.01); C04B 14/06 (2006.01); C04B 14/18 (2006.01); C04B 28/02 (2006.01); C04B 40/00 (2006.01); C04B 111/00 (2006.01); E04C 5/07 (2006.01)

CPC C04B 18/24 (2013.01) [B28B 1/16 (2013.01); B28B 1/522 (2013.01); B28B 1/525 (2013.01); B32B 7/02 (2013.01); B32B 13/02 (2013.01); B32B 13/04 (2013.01); C04B 14/06 (2013.01); C04B 14/185 (2013.01); C04B 28/02 (2013.01); C04B 40/0064 (2013.01); E04C 5/073 (2013.01); C04B 2111/00612 (2013.01)]

19 Claims

1. A bi-layered fiber cement product comprising a first layer, which first layer is covered by a second layer, each said first and second layers having a thickness, wherein

said first layer is composed of a first layer material having a density of between about 0.4 and about 0.9 g/cm³inclusive, and comprising cement and between 1 wt % and 70 wt % relative to the total dry weight of said first layer material of a lightweight filler,

said second layer covers only one of the main surfaces of the first layer,

the second layer is composed of a second layer material having a density of between about 0.9 and about 1/4 g/cm³inclusive, and comprising fibers and cement,

thickness of the second layer is larger than thickness of the first layer, and

said first layer is an outermost layer having an exposed, outwardly-facing surface and said second layer is a bottom layer and configured for facing a wall substrate.