Waterproof breathable composite materials for fabrication of flexible membranes and other articles
US9358755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2014 |
| Grant date | Jun 7, 2016 |
| Priority date | — |
| Expiry date | Oct 28, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/643
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A waterproof breathable material has a higher strength-to-weight ratio and higher tear resistance-to-weight ratio than traditional materials, and may be applied in a wide field of potential uses. A non-woven composite material comprises at least one waterproof breathable (W/B) membrane, a first unidirectional non-woven composite layer having multiple fibers enclosed by adhesive in parallel to each other, a second unidirectional non-woven composite layer having multiple fibers enclosed in adhesive in parallel to each other. The first unidirectional non-woven composite layer is positioned such that the fibers are oriented 90° relative to the fibers of the second unidirectional non-woven composite layer, and a space is formed between the first and second multiple fibers. No adhesive is present in the space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.