Method and device for producing a low-shrinking smooth yarn
A low-shrinkage, straight-filament technology that is used in stretch spinning, textile and papermaking, heat treatment of rayon, etc., and can solve problems such as unstable filaments, large spanning distances, feeding, etc.
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[0023] Figure 1 is a schematic diagram of a first embodiment of an apparatus according to the invention, in which the method of the invention is employed.
[0024] The apparatus comprises a spinning device, wherein the spinning device is formed by a spinning head 1 and a set of spinnerets 15 . The spinneret 1 is connected via a melt feed line 29 to a melt source (not shown here), for example to an extruder. A set of spinnerets 15 is installed on the underside of the spinning head 1, and each spinneret 15 includes a set of spinneret holes through which a single filament bundle 2 is respectively extruded. In this embodiment, for example four spinnerets 15 are shown.
[0025] After extrusion, the individual filament bundles 2 are cooled by cooling air 3 , oiled and moistened in an oiling device 4 and combined into a filament 5 . Although the above description is directed to multifilament filaments, it is basically applicable to monofilament filaments as well.
[0026] After th...
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