HOLDEN HN 2483 PDF

The material is a four layer composite consisting of high performance acoustic polyurethane foam with black PU film facing and a flexible PVC based noise barrier with a non-woven backing. It is used as a noise insulator for the attenuation of engine noise and road noise.

The acoustic foam must be heat-fusion bonded onto the barrier. No adhesive shall be used between the foam and the barrier.

The acoustic foam must be combustion modified polyether PU foam. The barrier material is a PVC-based polymer alloy loaded with inert mineral fillers. The barrier must have a 140 gsm black non-woven backing. The backing material must also be heat-fusion bonded onto the barrier. No adhesive shall be used.

The composite material must be capable to stand 120°C continuous service temperature and short term intermittent temperature of 140°C.