Method and device for melt spinning and cooling a plurality of monofilaments

Abstract

The invention relates to a method and a device for melt spinning and cooling a plurality of monofilaments which are extruded through a plurality of openings of a spinneret and guided into a cooling bath. The removal process consists of redirecting the monofilaments within the cooling bath. According to the invention, in order to prevent adhesion and an oblique pull-off, the monofilaments are divided into multiple filament groups after extrusion, said groups consisting of multiple monofilaments, and the filament groups are individually redirected independently of each other within the cooling bath into multiple redirecting positions by separate redirecting sheaves.

1 - 14 . (canceled) 
     
     
         15 . A method for melt spinning and cooling a plurality of monofilaments, said method comprising:
 extruding the monofilaments through a plurality of nozzle openings of a spinneret and guiding the monofilaments into a cooling bath, in which the monofilaments when they are pulled off the cooling bath are guided by deflection means,   wherein upon extrusion, the monofilaments are divided into several filament groups of several monofilaments and wherein the filament groups, independently of each other, are separately redirected inside the cooling bath into several deflection positions.   
     
     
         16 . The method according to  claim 15 , wherein the filament groups are each redirected in the deflection positions by individually freely rotating deflection rolls. 
     
     
         17 . The method according to  claim 15 , wherein upon extrusion, the monofilaments inside their filament group are guided between the spinning nozzle and the deflection positions with a maximal deflection <5°. 
     
     
         18 . The method according to  claim 15 , wherein the monofilaments are extruded next to each other in an annular arrangement and are divided into filament groups. 
     
     
         19 . The method according to  claim 15 , wherein a cooling path of the monofilaments inside the cooling bath is controlled by adjusting the deflection positions of the filament groups. 
     
     
         20 . The method according to  claim 15 , wherein upon cooling and redirection, the monofilaments of the filament groups are jointly guided as an assemblage, with the deflection positions inside the cooling bath partially being held at different heights. 
     
     
         21 . A device for melt spinning and cooling a plurality of monofilaments with a spinneret, said device comprising:
 a multitude of nozzle openings for extruding the monofilaments and arranged above a cooling bath;   several deflection means for redirecting the monofilaments inside the cooling bath; and   a pull-out means for pulling the monofilaments out of the cooling bath,   wherein the deflection means are arranged underneath the spinneret such that, upon extrusion, the monofilaments can be divided into several filament groups of several monofilaments and wherein the filament groups can individually be redirected independent from each other inside the cooling bath at several deflection positions by the deflection means.   
     
     
         22 . The device according to  claim 21 , wherein the deflection means are formed by several freely rotating deflection rolls which are held individually in the deflection positions. 
     
     
         23 . The device according to  claim 21 , wherein the positions or the number of deflection means underneath the spinneret are selected such that, upon extrusion, the monofilaments inside their filament group can be guided between the spinneret and the deflection means with a maximum deflection of <5°. 
     
     
         24 . The device according to  claim 21 , wherein the nozzle openings of the spinneret are embodied in an annular arrangement at the bottom of the spinneret and wherein the deflection means are positioned underneath the spinneret in an arrangement congruent to form the filament groups. 
     
     
         25 . The device according to  claim 21 , wherein the deflection means are arranged at a distance in reference to a plate-shaped fastener, the fastener being embodied mobile in order to adjust the deflection positions. 
     
     
         26 . The device according to  claim 25 , wherein the fastener is connected via a pivotal axis to a carrier, by which an angular incline can be adjusted at the fastener. 
     
     
         27 . The device according to  claim 25 , wherein the fastener is connected to a carrier in a height-adjustable fashion. 
     
     
         28 . The device according to  claim 21 , wherein a comb-shaped guide bar is arranged downstream in reference to the deflection means outside the cooling bath, by which the monofilaments of the filament groups can be guided as an assemblage of separated monofilaments.