Strip to be inserted between the two elements for causing the sound attenuation of noise that propagates through the element

摘要

It is arranged to attenuate noise that is inserted between elements 1 and 2, extends to the whole of at least one element of the cross section forming member 3 is disclosed. The cross-section forming member 3 is made of damping materials based on plastic at least one. The present invention, cross-section forming member 3 is characterized in that the equivalent real stiffness per unit length of 25MPa and (K _'eq), and has the equivalent loss factor of 0.25 and (tanδ _eq) at least.