Composite foam article
US11446898B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 7, 2019 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Mar 7, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite foam article is disclosed herein. The composite foam article comprises a surface layer and a base layer with an interface therebetween. The surface layer comprises a high-resiliency polyurethane foam having an impact resilience of greater than about 50% when tested in accordance with ASTM D3574-17, and presents a seating surface. The base layer comprises a viscoelastic polyurethane foam having an impact resilience of less than about 50% when tested in accordance with ASTM D3574-17, and presents a mounting surface opposite the seating surface. The surface layer and the base layer are present in a thickness ratio of from about 17:3 to about 2:3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.