Low density attached polyurethane foams made using a combination of frothing and blowing methods
US9765477B2 · kind B2 · utility
0Cited by
12References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2014 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Sep 25, 2034 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2503/041
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Textiles backed with a polyurethane cushion are produced by applying a layer of frothed polyurethane-forming mixture to a surface of the textile. The mixture contains both water and a physical blowing agent. The layer expands due to the action of the water and the physical blowing agent and cures to form an attached cushion having a density of 176 g/L or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.