Patent ID: 7104040
Filing Date: 2006-09-12
Classification: B65H,D02J

Abstract:
1. Fluff reducing device ( 10 ) of a spun yarn ( 3 ), to be inserted on the path of the thread of a winding machine from the feeding pirn ( 2 ) to the tapered bobbin ( 12 ), comprising a nozzle ( 22 ) in which a duct ( 23 , 43 ) is inserted which defines a longitudinal track of the yarn under process and one or more air injection ducts ( 24 , 44 ) in a tangential direction with respect to the yarn ( 3 ) movement in the duct ( 23 ) characterized in that the air flow induced by means of said ducts ( 24 , 44 ) corresponds to the twist of the yarn being processed, the duct ( 23 ) comprises an open longitudinal slit ( 29 ) along its entire length and no yarn ( 3 ) deviation and control means are interposed around the device ( 10 ).