A sound insulating trim part with at least one area with predominantly sound absorbing characteristics (absorbing area), at least one other area with acoustic mass-spring characteristics (insulating area), characterised in that the mass layer of the absorb...

A sound insulating trim part with acoustic mass-spring characteristics comprising a mass layer (A) and a decoupling layer (B) (3) , characterised in that the mass layer (A) consists of a porous fibrous layer (1) with a dynamic Young's modulus (Pa) of at le...

Sandwich construction for automotive applications consisting of a honeycomb core (2) covered at both sides with a skin layer (1a,1b) whereby each of the skin layers consist of random laid melt spun polyester bicomponent filaments (4), which were cross-lapp...