SOUND- ABSORBING MATERIAL HAVING EXCELLENT SOUND- ABSORPTION PROPERTIES AND METHOD FOR MANUFACTURING SAME

摘要

The present invention relates to a sound- absorbing material having excellent sound -absorption properties and to a method for manufacturing same; and more particularly, to a sound- absorbing- material , and to a method for manufacturing same having excellent sound absorption properties in which a wide surface area and an air layer are formed so as to be capable of causing viscous loss in incident acoustic energy and to improve sound absorption rate and transmission loss. Excellent sound absorption properties can be achieved even with a small fiber amount thereby enabling lightweight design and a binder fiber having rebound resilience is used so as to improve the sound absorption properties by maximizing the viscous loss of the acoustic energy transmitted to a fiber structure while maintaining a sufficient binding force between fibers.