Ultrasonic production of nonwovens

摘要

An ultrasonically bonded non-woven web is produced having no unacceptable fuzziness. An ultrasonic horn and an anvil roller are mounted for cooperation with each other to effect ultrasonic welding of a single batt of random, loose ultrasonically fusible fibers passed between them in a dry condition. The anvil roller comprises metal projections disposed in a pattern defining the roller circumferential surface, and ultrasonically insulating material-such as rubber-fills the volume between the metal projections.