Method and device for applying several substances to a yarn

Abstract

Device for applying several substances in a specific pattern on a yarn moving along a path comprising several nozzles for ejecting droplets of substances to the yarn, each of said nozzles ejects droplets of a respective substance to the yarn and being connected with a respective substance supply for supplying a substance having a respective characteristic. According to the invention said nozzles are directed at an inclined angle with respect to the moving path of the yarn.

1 . Device for applying several substances in a specific pattern on a yarn moving along a path comprising several nozzles for ejecting droplets of substances to the yarn, each of said nozzles ejects droplets of a respective substance to the yarn and being connected with a respective substance supply for supplying a substance having a respective characteristic, characterized in that at least one of said nozzles is arranged to eject droplets in a direction at an inclined angle with respect to the moving path of the yarn.  
     
     
         2 . Device according to  claim 1 , characterized in that the device comprises means for changing the angle between at least one of said nozzles with respect to the moving path of said yarn.  
     
     
         3 . Device according to  claim 2 , characterized in that said angle-changing means are arranged to change the angle based on the volume and/or velocity of the droplets being ejected, on the pattern in which the droplets are to be applied to the yarn and/or on the velocity of the yarn along its moving path.  
     
     
         4 . Device according to  claim 2 , characterized in that the device further comprises detection means for determining the volume and/or the velocity of at least one droplet being ejected and/or the speed of the moving yarn.  
     
     
         5 . Device according to  claim 1 , characterized in that said ejected droplets out of said nozzles are directed towards a common converging point.  
     
     
         6 . Device according to  claim 5 , characterized in that said converging point is located at the yarn being treated.  
     
     
         7 . Device according to  claim 5 , characterized in that said converging point is located near the yarn being treated.  
     
     
         8 . Device according to  claim 1 , characterized in that said nozzles are capable of ejecting droplets in a sequential manner towards said converging point.  
     
     
         9 . Device according to  claim 1 , characterized in that said nozzles are capable of ejecting droplets in a side-by-side relationship at said yarn as to blend said several droplets at said converging point.  
     
     
         10 . Device according to  claim 1 , characterized in that each nozzle is a piezo-electric actuated nozzle.  
     
     
         11 . Device according to  claim 10 , characterized in that the volume of each droplet being ejected and its velocity out of the nozzle is proportional to the voltage applied to the piezo-electric nozzle.  
     
     
         12 . Device according to  claim 1 , characterized in that the nozzles are directed in a downstream manner towards the yarn seen in the direction of the movement of the yarn.  
     
     
         13 . Device according to  claim 1 , characterized in that the nozzles are directed in an upstream manner towards the yarn seen in the direction of the movement of the yarn.  
     
     
         14 . Device according to  claim 1 , characterized in that said nozzles are positioned in a plane perpendicular to the moving path of the yarn.  
     
     
         15 . Device according to  claim 1 , characterized in that the ejected droplets out of at least one of said nozzles are directed at an inclined angle with respect to at least the ejected droplets out of another one of said nozzles.  
     
     
         16 . Yarn preparation device comprising a device for feeding and advancing a yarn from a yarn supply along a yarn moving path and further comprising a yarn treatment device according to any one of the preceding claims.  
     
     
         17 . Method for applying several substances in a specific pattern on a yarn moving along a path by ejecting droplets of substances from several nozzles for to the yarn, wherein each of said nozzles ejects droplets of a respective substance to the yarn and being connected with a respective substance supply for supplying a substance having a respective characteristic, characterized by arranging at least on of said nozzles to eject droplets in a direction at an inclined angle with respect to the moving path of the yarn.  
     
     
         18 . Method according to  claim 17 , characterized by adjusting the angle of the ejected droplets out of at least one of said nozzles with respect to the moving path of the yarn.  
     
     
         19 . Method according to  claim 17 , characterized by directing the ejected droplets out of said nozzles towards a common converging point.  
     
     
         20 . Method according to  claim 17 , characterized by directing the ejected droplets out of at least one of said nozzles at an inclined angle with respect to at least the ejected droplets out of another one of said nozzles.