Independent Acoustics and Noise Control Expertise Custom Audio Designs Ltd 


Fire retardent duct liner acoustic foam PUNF Foam PyrosorbFire retardent duct liner acoustic foam PUNF Foam PyrosorbPUNF Foam PyrosorbFire retardent duct liner acoustic foam PUNF Foam PyrosorbFireseal foam

Pyrosorb fireseal PUNF acoustic duct foam

fireseal PUNF Foam Pyrosorb acoustic foam 

Our Fire Retardent Acoustic Duct Foam is used for internal and external duct linings, thermal / acoustic machine coverings and suspended ceiling absorptive panels. It can also be used as part of composites combined with acoustic barrier materials. It is extremely versatile and highly adaptive. Also known as PUNF Foam, FR Foam, Pyrosorb Foam and Fireseal Foam.

This material is a fire retardent modified polyurethane acoustic foam designed to meet the stringent requirements of British Building Regulations. As well as being fireproof it is also CFC and HCFC free. Supplied with an adhesive backing this product is clean and easy to apply.

Generally supplied in 12mm and 25mm thicknesses although any thickness from 6mm - 100mm can be cut subject to minimum order quantities.

Fire retardent duct liner acoustic foam PUNF Foam PyrosorbDownload PDF

SPECIFICATIONS
ColourBlack
Size1000mm x 1200mm
12mm PlainPart Code F110
12mm Adhesive BackedPart Code F120
25mm PlainPart Code F130
25mm Adhesive BackedPart Code F140
Densitynom. 80-90 Kg/m³
Tensile Strength88 kps
Indentation Hardness156N
Elongation at Break188% (minimum unaged)
Thermal Conductivity0.052 W/mk
Temp. Range-30°C to +110°C
80°C continuous
FLAMMABILITY
FMVS302Zero burn rate, self-extinguishing
BS476 Part 6&7Class 0
CAA8/FAAPass all grades
UL94Pass Rating 94-V-0
PSA/FR3Passes Source 5
ASTM 1692 1974esists ignition
PSA/FR3Passes Source 5
ABSORPTION COEFFICIENTS
Material / Hz1252505001K2K4KNRC
6mm0.030.060.120.180.230.310.15
12mm0.050.150.200.350.400.450.30
25mm0.100.200.350.550.650.700.45
50mm0.250.450.700.850.851.000.70

DUCTWORK ATTENUATION (dB/m)
Airborne Noise
MaterialDuct Size1252505001K2K4K
12mm900x600mm0.20.61.73.75.34.5
25mm900x600mm0.20.82.910.86.97.2
50mm900x600mm0.82.97.211.07.16.2
25mm450x600mm0.41.03.314.18.38.9
50mm450x600mm1.63.18.716.68.38.6
25mm300x600mm0.61.43.815.112.011.4
50mm300x600mm2.65.410.519.515.111.6

DUCTWORK ATTENUATION (dB)
Breakout Noise
MaterialDuct Size1252505001K2K4K
12mm900x600mm2.95.18.84.27.213.0
Facing Options
FGC.BK:Black/White weavelocked glass cloth.
FPG.WH:White polyurethane coated glass cloth.
FPF.BK:Black/White Polyurethane film.
FPPD:Perforated black/white/grey PVC facing.
FAG:Aluminium foil laminated to glass fibre fabric.
FOF:Reinforced aluminium foil.
FMP:Metalised polyester film.
FMP.SC:Metalised polyester film with scrim.
FVT.BK:Black viscose tissue.
SB:Spray applied black/white/grey PVC.
All the above also available with self adhesive (SA) backing.

SPECIALIST FOAM FACINGS FOR IMPROVED LF ABSORPTION

We have developed a number of specialist facings with particular foams for improved low frequency absorption which is often required when dealing with industrial noise issues, machine enclosures and fan casings etc. We have managed to achieve 50% efficiency as low as 125Hz and 100% efficiency from 200Hz upwards.

The acoustic test data is shown on the right but its a good idea to discuss your requirements with our technical team.


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All information contained in these details is given in good faith but without warranty.
Custom Audio Designs reserves the right to alter the specifications of any product without notice.
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