Multilayer facer
US11951712B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2020 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Jul 26, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2607/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A glass facer for a constructions board includes a first non-woven layer of coarse fibers and a second non-woven layer of coarse fibers and microfibers. The glass facer also includes a binder that simultaneously binds or adheres the coarse fibers of the first non-woven layer together, the coarse fibers and the microfibers of the second non-woven layer together, and the first non-woven layer to the second non-woven layer. The first non-woven layer has a porosity and air permeability that enables the first non-woven layer to absorb a material of the construction board when the glass facer is positioned atop the construction board during manufacture of the construction board. The second non-woven layer is configured to block the material of the construction board from passing through the glass facer to an exterior surface of the second non-woven layer so that the material is not externally visible.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.