Device for needling prebonded web - has stitch base with blades extending transverse of web movement and touching continuously curved enveloping surface with their end faces

摘要

A device for needling a prebonded web (1) comprises at least one needle board reciprocatingly movable in a stitching direction. The device includes a stitch base (2) between a feed roller and a discharge roller, which is located directly opposite the needle board and forms a web guide that is convex in direction of web movement. The stitch base consists of blades (9) extending transverse to the direction of movement and touching a continuously curved enveloping surface with their end faces (10) forming a web support. The blades engage between the two needle rows extending transverse to the direction of web movement.