Sound Proof Insulation Sheet 1m x 1m x 20mm Self Adhesive Armasound Sheet
[L650]

Sound Proofing Insulation 1m sq Sound Insulation Sheet ASD-240-20/A Sound proof

ARMASOUND The professional insulation for noise absorption

ArmaSound is a versatile acoustic absorber designed for use in a variety of different acoustic applications. A high performance sound absorber which also offers additional transmission loss performance and both vibration damping and isolation properties, ArmaSound is the result of 4 years of research.
The acoustic properties of ArmaSound vary depending on formulation, density and thickness. The best results will be observed by selecting the most appropriate product grade for the type of noise in question.
ArmaSound can also be engineered to meet specifi c requirements by optimising its absorption behaviour to match particular problem frequencies.
Sound Absorption
Open cell structure with complex pore geometry allows for effective absorption of air-borne sound across a broad frequency range
Unique combination of physical properties allows absorption to be maximised at key ônuisanceö frequencies.
Sound Transmission Loss
Relatively high density and high fl ow resistance offers benifi cial sound tranmsission loss properties.
May be suitable for use as an alternative to complex "foam-barrier" multilayers.
Vibration Damping and Isolation
Visco-elastic properties help dampen or deaden resonance effects in metal panelwork (e.g. enclosures or ducting) which helps to reduce "re-raditaion" effects.
Reduces structure-borne noise transmission when used as isolation pads.

ArmaSound RD 240 - Technical Product Data

» Applications Areas

	Ductwork	Plant Room	Enclosures	Flooring
Propagation Noise
Internal Noise
Duct Wall Vibration
Enclosure Wall
Impact Noise (wooden)

» Acoustic Performance ArmaSound 240

Octave band absorption coefficient acc. to EN ISO 354	Octave band centre frequency, Hz
	125	250	500	1 000	2 000	4 000
at 6 mm	0.01	0.03	0.07	0.18	0.39	0.74
at 10 mm	0.01	0.04	0.15	0.46	0.87	0.94
at 15 mm	0.03	0.11	0.38	0.80	1.03	0.89
at 25 mm	0.09	0.28	0.77	1.03	0.94	0.90

acc. to EN ISO 11654	6 mm	10 mm	15 mm	25 mm
Weighted Sound Absorption Coefficient αw	0.15 (H)	0.25 (H)	0.40 (MH)	0.60 (MH)
Sound Absorption Class	E	E	D	C

acc. to ASTM C423	6 mm	10 mm	15 mm	25 mm
NRC Rating	0.15	0.40	0.60	0.75

The 'practical sound absorption coefficient, αp , can be determined by rounding the octave band values listed to nearest

NRC is calculated in accordance with ASTM C423

(H) denotes at least 0.25 positive deviation from reference curve value at 2000Hz or 4000Hz

(M) denotes at least 0.25 positive deviation from reference curve value at 500Hz or 1000Hz

(L) denotes at least 0.25 positive deviation from reference curve value at 125Hz or 250Hz

» Acoustic Performance ArmaSound 120

Octave band absorption coefficient acc. to EN ISO 354	Octave band centre frequency, Hz
	125	250	500	1 000	2 000	4 000
at 10 mm	0.01	0.03	0.12	0.36	0.70	0.76
at 15 mm	0.02	0.09	0.29	0.72	0.81	0.76
at 20 mm	0.03	0.12	0.45	0.77	0.75	0.76
at 25 mm	0.05	0.19	0.61	0.74	0.75	0.78
at 50 mm	0.15	0.53	0.71	0.73	0.77	0.76

acc. to EN ISO 11654	10 mm	15 mm	20 mm	25 mm	50 mm
Weighted Sound Absorption Coefficient αw	0.20 (H)	0.35 (MH)	0.40 (MH)	0.50 (MH)	0.75
Sound Absorption Class	E	D	D	D	C

acc. to ASTM C423	10 mm	15 mm	20 mm	25 mm	50 mm
NRC Rating	0.30	0.45	0.50	0.55	0.70

The 'practical sound absorption coefficient, αp , can be determined by rounding the octave band values listed to nearest

NRC is calculated in accordance with ASTM C423

(H) denotes at least 0.25 positive deviation from reference curve value at 2000Hz or 4000Hz

(M) denotes at least 0.25 positive deviation from reference curve value at 500Hz or 1000Hz

(L) denotes at least 0.25 positive deviation from reference curve value at 125Hz or 250Hz