Automobile sound insulating panel and method of making same
US4239823A · kind A · utility
1Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Feb 21, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An automobile sound insulating panel and apparatus for and method of making same are provided wherein such panel comprises a contoured fibrous pad and a plastisol layer bonded against the pad with the plastisol layer comprising a foamed plastisol layer having randomly disposed air pockets therethrough which provide a minimum weight for the panel while improving the acoustical properties thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.