heavy sound absorbing porous sheets, sound absorption system and method for manufacturing a heavy porous sound-deadening foil.

摘要

porous sound absorbing heavy sheet (310) consisting of heavy particles (110) each consist essentially of thermoplastic polymers, in particular polyethylene, ethylene / propylene / diene and / or ethylene / vinyl acetate, and mineral fillers, in particularly limestone flour, lime spar and / or barite, where a portion of the heavy particles (110) having a number of sieve is more than 0.5 times greater than the thickness (D) of the heavy blade porous sound absorbing (310), characterized in that heavy particles (110) are partially compressed and thermally confluidas are partially melted and thus adhered to each other and have interstices (120) due to partial melting together.