Anti-slip roofing underlayment
US7745353B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2007 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Dec 12, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/198
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A roofing underlayment comprises a reinforcing layer, which is extrusion coated on at least one side with an anti-slip coating layer. The reinforcing layer comprises a woven polyethylene or polypropylene scrim. The anti-slip coating layer comprises a compound based on a styrene and ethylene/butylene-styrene, S-E/B-S, block copolymer, such as the compound sold under the trademark KRATON® MD6649. The anti-slip coating layer may also be embossed. The anti-slip coating layer is low in cost and helps prevent water from penetrating the primary roofing material. In addition, the anti-slip coating layer provides an improved anti-skid surface upon which an individual may safely walk. Embossment improves the wet slip resistance of the roofing underlayment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.