Carrier membrane, coated membrane composite, and method
US7803725B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 2007 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Mar 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/689
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A pliable reinforcement carrier membrane for use in a coated membrane composite includes a pliable non-woven fibrous mat of entangled polymeric fibers and a hydrophobic binder. The membrane is made so that a first surface of the mat has portions of a portion of the polymeric fibers of the mat protruding therefrom in extent and in sufficient amounts to give the first surface of the mat a fuzzy characteristic to facilitate adhesion of a coating material and a second surface of the fibrous mat has a generally smooth, non-fuzzy surface. A pliable waterproof composite, including the membrane, has a bottom surface formed by a filled asphalt, modified bitumen, or non-asphaltic polymeric coating that overlies and is adhered to the first surface of the mat to provide a barrier against liquid water transmission through the composite and a top surface formed by the second surface of the mat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.