Manufacturer
BK Raumakustik
BK Raumakustik (Böcking Kemmerling Raumakustik GmbH) plans and delivers bespoke room-acoustic solutions made from the aPerf® material: from consulting through development to turnkey installation. Head office in Neuss, Rhine/Main branch in Frankfurt. aPerf® is a sound-absorbing nonwoven made of 100 % polyester (partly recycled PET bottles), thermally and mechanically bonded without chemical binders. The material is self-supporting and can be used without a frame, is dyed throughout, ball-impact-safe per DIN 18032, OEKO-TEX Standard 100 certified and fully recyclable. Manufactured in Germany and Switzerland. From the aPerf® materials BK Raumakustik builds wall panels, ceiling rafts, desk dividers, broadband and bass absorbers, acoustic prints and industrial hall acoustics. Member of the DGNB.
WebsiteaPerf® wool
aPerf wool
Description
The soft acoustic roll of the aPerf® family (formerly 'aPerf roll'): a thermally bonded polyester nonwoven from the roll (1,200 mm wide), used as an acoustic backing, overlay or cavity absorber in wall and ceiling systems and behind perforated ceilings and slats. An emission-free, skin-friendly alternative to glass and mineral wool, additionally thermally insulating and moisture-regulating. Absorption rises with material thickness and wall distance up to the highest class A.
Technical data
Measurement data
Sound absorption
ISO 354 – reverberation chamber· 14 variants
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Frequency values
αp per ISO 11654
| f (Hz) | 125 | 250 | 500 | 1k | 2k | 4k |
|---|---|---|---|---|---|---|
| αp | 0.05 | 0.15 | 0.35 | 0.60 | 0.75 | 0.85 |
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Absorber class: D
NRC: 0.45
Weight / density: 300 g/m²