Patent ID: 6158097
Filing Date: 2000-12-12
Classification: D04H

Abstract:
A method for needling a fiber fleece, which is lying on a support which comprises:cyclically penetrating the support, substantially perpendicularly to the support, with a plurality of needles, each of said needles having a needle axis and having a surface adapted to grasp fibers from said fiber fleece when moving through said fiber fleece;grasping with the needles sections of individual fibers of said fiber fleece and offsetting these fiber sections substantially perpendicularly to the support through the fiber fleece;rotating the needles about their axes at least during a stitching-in motion phase in which they penetrate into the fiber; andneedling the fiber fleece in a plurality of successive needling zones, wherein in one zone the needles of a first kind grip the fibers of the fiber fleece when penetrating same, and in the directly adjoining zone the needles of a second kind grasp of the fibers of the fiber fleece when being pulled out of the fiber fleece.