System for forming a roofing membrane, and associated method
US12145348B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 24, 2023 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Aug 24, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2419/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method includes obtaining a first roll of a first sheet comprising thermoplastic polyolefin and having a width of at least 60 inches; obtaining a second roll of a second sheet comprising thermoplastic polyolefin and having a width of at least 60 inches; heating at least a portion of a width of the first sheet with hot air from a hot air knife to form a heated first sheet; and compressing the heated first sheet and the second sheet between two rollers, to form a laminated roofing membrane, where the heated first sheet and the second sheet directly contact one another without a scrim layer disposed between the heated first sheet and the second sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.