METHOD FOR HOMOGENIZING THE STITCHING PATTERN IN A NEEDLED FLEECE

摘要

A method for homogenizing the stitching pattern in a needled fleece requires a detector which is arranged between a first needling device and a second needling device and detects areas in the fleece where stitches are absent. Then the fleece needled by the first needling device is also needled in the second needling device, wherein at least one operating parameter or at least one structure parameter of the second needling device is adapted specifically on the basis of the result of the detection of the absent-stitch areas, so that, during the further needling of the fleece in the second needle machine, the absent-stitch areas are filled in a targeted manner.

主权项

1. A method for homogenizing the stitching pattern in a needled fleece, comprising the following steps:
providing a first needling device and a second needling device arranged in series, wherein each of the first and second needling devices comprises a plurality of needles mounted on at least one movable needle board for needling a supplied fleece; needling the supplied fleece in the first needling device, as a result of which a plurality of stitches is produced in the fleece; detecting, at a location between the first needling device and the second needling device, absent-stitch areas of the fleece where stitches are absent; subjecting the fleece needled by the first needling device to further needling in the second needling device, wherein at least one operating parameter or at least one structure parameter of the second needling device is adapted on the basis of results of the detection of absent-stitch areas in the fleece in such a way that, during the further needling of the fleece in the second needling device, at least parts of the absent-stitch areas are filled in a targeted manner.