Acoustic insulator with controlled airflow resistance and method of making same
US7566475B2 · kind B2 · utility
4Cited by
12References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 9, 2004 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Nov 7, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24372
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of making an acoustic insulator includes depositing thermoplastic particulate on a first surface of a base layer. The method further includes heating the particulate such that the particulate at least partially melts and penetrates the first surface of the base layer, thereby increasing density and airflow resistance of the base layer proximate the first surface such that the base layer has an areal mass in the range of 0.1 to 1.0 kg/m2 and an airflow resistance in the range of 300 to 5,000 Nsm−3 proximate the first surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.