Roof underlayment
US12325215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2020 |
| Grant date | Jun 10, 2025 |
| Priority date | — |
| Expiry date | Feb 4, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2419/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An air and water barrier article comprised of multiple layers. The layers include a porous layer, a polymeric layer disposed on a front side of the porous layer, and a pressure sensitive adhesive disposed on a second side of the porous layer. In certain embodiments, a top polymeric layer having hydrophobic and UV resistant properties will be provided on a surface of the first polymeric layer opposite the adhesive layer. Each of the polymeric layers and the porous layer can be formed of a material(s) having a Tg between −40° C. and 20° C. The top layer, if present, can have a Tg between −5 and 30° C. The barrier article can provide nail seal ability and have a weight of less than 30 ounces per square yard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.