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Hawaphon

The principle: amazingly ingenious
The fact that everything grows quiet and peaceful when our sound insulation panels are fitted is attributable to their ingenious method of construction. HAWAPHON is a moulded synthetic foil with compartments filled with steel pellets (1 mm diameter). The fact that the compartments are filled loosely guarantees a low flexural strength. The friction losses among the pellets give rise to a particularly high degree of internal attenuation. Thanks to the special structure of HAWAPHON, the effective air clearance achieved is equivalent to the actual shell clearance of the support panels in a construction of the double-wall type. This is a considerable advantage over other sound attenuating products with closed layers.

Dependence of sound insulation on the surface related mass of a single-layer construction component. The red line applies to panels of particulary low flexural strength.

Applications
HAWAPHON is fixed to the full surface of construction panels and is highly effective in insulating sound. It is suitable for use on doors, roller blind boxes, wooden beamed ceilings, facings on solid walls, facades, dividing walls and cupboard partitions.

Blue line:

sound insulation process of a simple chipboard panel.

 

Red line:

sound insulation process of a chipboard panel entirely covered with HAWAPHON.

Sound insulation: amazingly effective
Ohters simply reduce:
In the field of acoustics, one and one does not always equal two and an ever greater mass does not always mean better insulation either. It is also the elastic properties and internal friction losses of a construction component that help determine the insulation capacity. The illustration of the right shows how, especially in this weight range of construction panels (approx. 5-30 kg/m2), the sound insulation breaks down with increasing mass as a result of the increasing flexural strength of the construction components.

HAWAPHON insulates twice over

There are no such discordant notes with HAWAPHON, however, for the flexural strength remains constantly low in spite of a high mass. For example, KORFF’s ingenious peacemaker improves the sound insulation of a 19 mm thick chipboard panel from 30 dB to 38 dB. For the ear, this means almost a 50 % reduction.
Sound insulation levels: amazingly convincing

Up to 47 dB in rollblind boxes:
Completely lining a roller blind box with HAWAPHON and mineral fibre insulation materials is unbelievably effective.

Up to 60 dB in wooden beamed ceilings:
In wooden skeleton constructions, HAWAPHON attains a rated air conduction insulation level of Aw = 60 dB (and even with equivalent solid constructions, the level is still Aw = 55 dB). The rated standard impact sound level of the ceiling is Lnw = 45 dB (TSM = 18 dB). Thus the minimum requirements of DIN 4109 are surpassed by a remarkably large margin.

Up to 53 dB in partitions:
This figure applies to chipboard panel constructions with a minimum wall thickness of only 98 mm. This already meets the requirements of DIN 4109 (Rw = 53 dB) on minimum sound insulation of apartment partitioning walls.

Up to 46 dB in multi-layer doors:
HAWAPHON meets the stringent requirements of DIN 4109 „sound insulation in buildings“: a sound-insulating door panel must indicate a 5 dB higher insulation level than the built-in ready-to-use door.

Installation: amazingly simple
If it was only possible to ensure peace and quiet so simply in every situation! HAWAPHON can easily be trimmed to the desired size using a normal cutter. Then all you need is some glue to fix the panel to the desired surface. You will soon realise why HAWAPHON is the name you hear the most often in the field of sound insulation.
For calming:

All processing details and a lot of interesting facts about the sound and HAWAPHON you can find on our CD “noise with HAWAPHON“. The CD can be ordered from us for a nominal fee of € 25 .– (or CHF 25 .–).
Please note: The contecnt of the CD is only available in German.

  • Steel pellet filling, approx. 11 kg/m² => high mass
  • Loose filling of components => low flexural strength
  • Friction losses among the pellets when vibrating
  • Panel format 1’140 x 730 mm = 0.83 m²
  • Panel weight approx. 9.2 kg
Hawaphone

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