Wheel house lining for vehicles comprises three material layers having different air permeabilities at the same test pressure

摘要

Wheel house lining comprises a first material layer (6) having an air permeability of 15-60 l/m 2>s at a test pressure of 1 mbar, a second material layer (10) having an air permeability of 100-150 l/m 2>s at a test pressure of 1 mbar, and a third material layer (9) having an air permeability of 20-200 l/m 2>s at a test pressure of 1 mbar.