NDC CALME

Sintered Aluminium Sound Absorption Plate

ALUMINIUM SOUND-ABSORBING PANEL "CALME"

Calme is a sound absorption plates, made of sintered aluminum powder. This porous plate is created with our high sintering technology, that can control which frequency to absorb by controlling the air layer behind it. It can also be painted and curved without degrading the performance.


■ WHAT IS SOUND ASORPTION?

Usually covering a noise source with board or concrete is called sound insulation. The sound reflects off the walls and increases, which means the noise level does not get lower. The sound that leaks from any clearance (e.g. doors, windows, air vents) also increases.

Applying sound absorption makes sound insulation work properly. It makes the sound decease inside the room, which also allows less sound to leak outside of the room. Combining sound insulation and sound absorption is essential for effective soundproofing.

SOUND ABSORPTION CHARACTERISTIC

The peak of sound absorption moves towards a lower frequency when widening the air gap or filling the gap with another porous material, which allows us to maximise the effect depending on the type if noise.


■ SOUND ABSORPTION COEFFICIENT AND NOISE LEVEL

SAC 0.5 -3dB
SAC 0.7 -5dB
SAC 0.9 -10dB
SAC 0.9 -10dB
SAC 0.99 -20dB
➢ -10dB is the same as 10 noise sources reduced to 1.


■ HOW TO INSTALL
In order to obtain effective sound absorption performance, an air gap behind CALME is necessary.

INSTALL WITH GLUE
This method is suitable for low ceilings, walls, and places where the screws/rivets, should not appear on the surface.
INSTALL WITH SCREWS/RIVETS
This method is suitable for high ceilings, swimming pools, gyms and any outside installation.
➢ For more detals, please look up for our Installation Guide.

STANDARD SPECIFICATION

■ MATERIALS

MATERIAL
Type A
Type B
Type C
STRENGTH
High
Medium
Low
WATER RESISTANT
No
Medium
High
APPROPRIATE FOR Indoor use Curving Humid/Outdoor

■ STANDARD DIMENSIONS

THICKNESS (mm)
2
3
SIZE (mm)
600x600
600x1200
600x600
600x1200
WEIGHT (kg) PER SHEET
1.2
2.4
1.7
3.4
PER 1㎡
3.2
4.8

■ SURFACE APPEARANCE

The surface colour of each Calme is slightly different in colour tone since it is a sintered porous material, and the difference is still visible even after colouring with standard or a specified colour.

COLOUR STANDARD Original Silver Gray.
SELECTIVE Any colour is specifiable. (Extra charge is required.)
PRINT Any pattern or image is possible with High quality printing. (Extra charge is required.)
TEXTURE
Smooth
Embossed
Corrugated
Stucco
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