Absorptive sound insulation
AssigneeAdler Pelzer Holding GmbH
InventorsVolkmar Schulze, Maurizio Tarello
Life of this patent
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Abstract
An absorption sound insulation for motor vehicle interiors and luggage compartments with absorption/stiffening nonwovens or 3D absorbers is formed of partially or completely cellulose wool, and includes a wear layer, and an absorbent/stiffening nonwoven fabric laminated thereunder formed of rayon of solid individual phases having a multi-leg cross-sectional shape with at least three legs, in which the legs of the cross-sectional profile each have a length/width ratio of at least 2:1 and the individual titre is 0.5 to 5 dtex.
Claims9
An absorptive sound insulation for the motor vehicle interior and luggage compartment consisting essentially of two layers:
- (a) a wear layer, wherein the wear layer comprises
- (a1) a tufted carpet,
- (a2) a velour and flat needlepunched nonwoven carpet, and
- (a3) a microperforated film, or
- (a4) a PET or blended fibre nonwoven and
- (b) an absorbent/stiffening nonwoven fabric layer laminated to the wear layer, and comprising rayon of solid individual phases having a multi-leg cross-sectional shape with at least three legs, in which the legs of the cross-sectional profile each have a length/width ratio of at least 2:1 and the individual titre is 0.5 to 5 dtex.
Dependencies are inferred from the claim text.