Patent 7114226 was granted and assigned to Groz-Beckert on October, 2006 by the United States Patent and Trademark Office.
A needle (1) according to the invention serves for the after-treatment, particularly after-needling of flat textile products, particularly for roughening of the product surface. The needle (1) is of fully symmetrical construction with respect to the central longitudinal axis (11); this applies particularly also to its barbs. The needle gauge is at least 46 and the barb depth is 0.02 mm at the most. The needle ensures a gentle, protective operation and the making of particularly fine textiles.