R-bitumen
Attenuation layer: Polymer mixed bitumen
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Bottom: pressure sensitive self-adhesive (protective silicon paper) Applications: R-bituminous (2.6 kg) is designed to absorb body and frame sounds of metal, wood and composite structures. R-bitumen (7.5 kg) is designed to absorb airborne noise in different structures The average airborne sound insulation of 100-5000Hz: -R bituminous 2.6 kg, 32.5 dB (A) (attached to 15mm birch plywood) -R bituminous 7.5 kg 35.1 dB (A) (attached to 15mm birch plywood) Self-extinguishing, FMVSS 302, ISO 3795 |
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