Roofing materials including a layer of a parting agent
US12065835B2 · kind B2 · utility
0Cited by
73References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2020 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Dec 2, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2419/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Asphalt-based roofing materials, such as shingles, are disclosed that include a band of a parting material. The asphalt-based roofing material includes at least one asphalt-coated substrate that defines a headlap portion and a tab portion each having opposed top and bottom surfaces; a layer of backdust applied to at least a portion of the bottom surface of the headlap portion and to at least a portion of the bottom surface of the tab portion; a release section of parting material applied to the layer of backdust, where the parting material is included in the in the range of 0.0005 kg/m2 to 1 kg/m2; and an adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.