Perlite sound absorbing plate and sound insulating wall composed of the same
US4160491A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1978 |
| Grant date | Jul 10, 1979 |
| Priority date | — |
| Expiry date | Jul 25, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/02
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A perlite sound absorbing plate and a sound insulating wall constructed by arranging a number of said plates side by side and by assembling together into one integral body are disclosed. The plate is composed of a mixture including 1,000 cm.sup.3 by bulk volume of formed perlite particles each having a diameter of 0.1 to 7.0 mm, 100 to 140 g of cement, liquid rubber latex containing 5 to 20 g of solid ingredients and a suitable amount of water and produced by press molding with a compression ratio of 1.10 to 1.30. The wall is constructed by assembling a number of said plates each provided with a side groove with the aid of supporting columns and reinforcing plates, each having a ridge adapted to be engaged with the side groove of said plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.