Lightweight roofing shingle and method for making same
US10428524B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2015 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24372
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A lightweight roofing shingle comprising a saturated mat having an exposed side and an unexposed side wherein a fabric reinforcing layer substantially replaces the bottom asphalt coating and the backing aggregate on the unexposed side of a conventional shingle. The lightweight shingle will have a top asphalt layer applied to the exposed side of the mat and a layer of granular material applied to the top asphalt layer opposite the mat per conventional construction, and the fabric reinforcing layer is adhered directly to the unexposed side of the saturated mat. In one embodiment, the fabric reinforcing layer covers an entire area of the unexposed side of the saturated mat. The reinforcing layer may preferably be a nonwoven fabric made from PET or polypropylene. The lightweight roofing shingle may also include a release tape layer applied to the reinforcing layer opposite the saturated mat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.