GRADIENT DENSITY PADDING MATERIAL AND METHOD OF MAKING SAME

摘要

A gradient density padding material includes a single layer of nonwoven material having at leastone surface processed to form a portion of a thickness thereof having a density increased withrespect to a remaining portion of the thickness thereof. The single layer of nonwoven materialafter processing has an airflow resistance within the range of 200-4000 MKS Rayls, wherein saidsingle layer of nonwoven material has an enhanced acoustic performance. A method of makinga gradient density padding material having an enhanced acoustic performance includes the stepsof providing a single layer of nonwoven material and processing at least one surface of the singlelayer of nonwoven material to form a portion of a thickness thereof having a density increased withrespect to a remaining portion of the thickness thereof. The single layer of nonwoven material afterprocessing has an airflow resistance within the range of 200-4000 MKS Rayls.