Lightweight noise absorbing material and substrate having the same attached thereto
US11195505B2 · kind B2 · utility
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Key dates
| Filing date | Jun 19, 2019 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Jul 30, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/614
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure relates to a lightweight noise absorbing material and a substrate having the same attached thereto, and more particularly, to a lightweight noise absorbing material providing lightweight and excellent noise absorption performance compared to existing noise absorbing materials by including a triple thin fiber layer in which upper and lower fine fiber layers are stacked respectively on upper and lower surfaces of a fibrous non-woven fabric, and a substrate having the lightweight noise absorbing material attached thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.