Roofing material having improved impact resistance
US6228785A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1998 |
| Grant date | May 8, 2001 |
| Priority date | — |
| Expiry date | Dec 30, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/669
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An asphalt-based roofing material includes a substrate coated with an asphalt coating. The asphalt coating includes a lower region that is positioned below the substrate when the roofing material is installed on a roof. A web is fused to the lower region of the asphalt coating. A portion of the web and of the asphalt coating have been intermingled by melting, thereby fusing the web and the asphalt coating. A method of manufacturing the asphalt-based roofing material includes the steps of coating a substrate with an asphalt coating, applying a web to the lower region of the asphalt coating, and intermingling a portion of the web and of the asphalt coating by melting, thereby fusing the web to the lower region of the asphalt coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.