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.

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Documents

Datasheet

aPerf® pad

Name: aPerf® pad
Brand: BK Raumakustik

aPerf pad

WallCeilingFreestanding

Description

The self-supporting acoustic mat for industrial and machine acoustics (formerly 'aPerf mat'). More robust and dimensionally stable than the soft aPerf® wool, it is suited to lining halls, machine enclosures, cavities and expanded-metal ceilings, emission-free and stable even under changing climate conditions. Available as a high-absorption thick-layer absorber (50 mm) up to the highest absorption class A, in white, silver grey (light grey) and black.

Technical data

Material: 100 % polyester, thermally bonded, self-supporting

Surface: smooth

Up to fire class: Low flammability (B-s2,d0) per DIN EN 13501-1 (50 mm) — Per DIN EN 13501-1 (50 mm); additionally ASTM E84 Class A for the white version.

Application: industrial and machine acoustics, hall lining, machine enclosures, cavity/expanded-metal-ceiling absorber

Certifications: OEKO-TEX Standard 100; inert to fungi/bacteria DIN EN ISO 846; emission-tested AgBB 2021 / French VOC A+ / Belgian VOC

Colours: white, silver grey (light grey), black (all 50 mm)

Measurement data

Sound absorption

ISO 354 – reverberation chamber· 2 variants

αw

1.00

Frequency values

αp per ISO 11654

f (Hz)	125	250	500	1k	2k	4k
αp	0.50	0.90	0.95	1.00	1.00	1.00

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Compare		Value
	Overall build-up 200 mm	αw1.00
	Direct (no gap)	αw0.90

Absorber class: A

NRC: 0.95

Weight / density: 2.500 g/m²