PlasticHighly absorbent
Data source
PTB reference data
Physikalisch-Technische Bundesanstalt
Source: Produktblatt des Herstellers
Kaefer Microsorber surface absorber, micro-perforated polyester film
Microsorber
PTB reference data
Original description
Kaefer Microsorber surface absorber, micro-perforated polyester film
Material properties
Manufacturer: Kaefer Isoliertechnik
Thickness: 0.105 mm
Wall distance: 100 mm
Perforation: micro-perforation
Hole size: 0.21 mm
Measurement data
Sound absorption
ISO 354 – reverberation chamber
αw
0.52
Frequency values
αp nach ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.10 | 0.30 | 0.75 | 0.70 | 0.70 | 0.55 |
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Method (354): Measured