ALUTHERMO® 7 MM and 21 MM

Aluthermo® is an insulating material that works by reflection and consists of two layers separated by a honeycomb structure of air bubbles enclosed in a self-extinguishing polyethylene film, which is covered on both sides by a 30-micron thick foil of pure aluminium that has been polished and treated against oxidation.

The various layers are thermally welded together over their full surface areas.

HOW DOES IT WORK?

The obtained complex is semi-rigid and consists of the following successive layers:
aluthermo 7 - 21mm

  1. A film of pure aluminium, 30 microns thick, treated against oxidation
  2. A layer of bubbles of dry air enclosed in self-extinguishing polyethylene
  3. A layer of bubbles of dry air enclosed in self-extinguishing polyethylene
  4. A film of pure aluminium, 30 microns thick, treated against oxidation

The air trapped in the bubble film and polyethylene foam is dry and stable. Possible condensation is therefore always avoided within the usual range of temperatures for ALUTHERMO®.

Technical characteristics

Aluthermo® 21mm

21mm_kl

 Aluthermo® 7mm

7mm_kl
Thickness ± 21 mm ± 7 mm
Diameter of the bubbles 30 mm 10 mm
Height of  the bubbles 12 mm 4 mm
Thickness of the polyethylene film 200 microns 150 microns
Number of aluminium films 2 2
Thickness of the outer aluminium film 30 microns 30 microns
Dimensions of the roll 1,25 x 25 m 1,25 x 25 m
Surface area per roll 31,25 m² 31,25 m²
Weight ± 620 g/m² ± 550 g/m²
Operating temperature range – 40°C to + 80°C – 40°C to + 80°C
Fire resistance classification M1 – A1 M1 – A1
Permissible load with 10% deformation – 250 kg/m²
Permissible load with 20% deformation – –
Bursting resistance – 1000 kg/m²
Emissivity 0,05 0,05
Equivalent thermal resistance See study of the university of Liege See study of the university of Liege
Impact noise attenuation – –
Acoustic attenuation Rrose= 27 db(A)

Rroad= 24 dB(A)

 ∆Lw = 26 dB
721-mm