Patent ID: 9715871
Date: 2017-07-25
CPC Classifications: B32B,B60R,G10K

Claim:
1. A multilayer dash isolation pad comprising: a decoupler; and a sound absorption and insulation layer, wherein the decoupler is a felt manufactured from urethane foam or octalobal cross-section fiber, and wherein the sound absorption and insulation layer comprises a compressed felt manufactured from octalobal cross-section fibers, and a shape factor (α) of the octalobal cross-section fiber is of about 2.0 to 2.7, wherein the shape factor (α) is represented by the following Equation 1. wherein a cross-section circumference length (P) of the fiber is of about 200 to 250 μm, and a cross-sectional area (A) of the fiber is of about 700 to 800 μm