Patent ID: 6523237
Filing Date: 2003-02-25
Classification: B29C,B60R,Y10T

Abstract:
A method of integrally forming tear seam (44) within a multilayered seat cover material (24, 26) having at least one outer layer (32) and at least one inner layer (34, 36) by using an ultrasonic welder (46) and a template (48) having a raised ridge (50), said method comprising the steps of;placing the cover material (24, 26) over the template (48) within an inside surface (30) of the inner layer (34, 36) in contact with the raised ridge (50); moving the ultrasonic welder (46) adjacent an outside surface (28) of the outer layer (32) in alignment with the raised ridge (50) of the template (48) and wedging the trim cover material (24, 26) between the ultrasonic welder (46) and the raised ridge (50); and ultrasonically heating the layer (34, 36) with the ultrasonic welder (46) to form a tear seam (44) having at least one of the inner layers (34, 36).