GypsumBroadband absorber
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: H. Lenz, Marktübersicht schallabsorbierende Anordnungen, Ruhr Universität Bochum, 1981, Seite 207
Knauf Perllit-Dekorplatte No. 30, gypsum fiber absorber
Perllit-Dekorplatte – No. 30
PTB reference data
Original description
Knauf Perllit-Dekorplatte No. 30, gypsum fiber absorber
Material properties
Manufacturer: Knauf Hauptverwaltung Iphofen
Wall distance: 50 mm, 500 mm
Perforation: 32.5%
Backing: Paratex fiber non-woven and 30 mm mineral wool
Up to fire class: at least fire-retardant
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 2 variants
αw
0.69
Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.95 | 0.75 | 0.70 | 0.75 | 0.60 | 0.40 |
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| Compare | Value | |
|---|---|---|
| 500 mm | αw0.69 | |
| 50 mm | αw0.53 |
Weight / density: ca. 17 kg / m²
Dimensions: 625 x 625 mm