Aislamiento acústico, en particular para el interior de automóviles

摘要

The invention relates to a sound insulation made of a foam layer (1) and a barrier layer (absorption mat) (3, 6, 7), characterized in that an optionally microperforated non-woven layer, a microperforated film, or a microperforated non-woven film (2, 5) is located partially or fully between the foam layer (1) and the barrier layer (3, 6, 7).