Filament Yarn Spinning
For transforming filament fibres to yarns involve processes such as Wet spinning, Dry spinning, Melt spinning, Bi-component spinning, Bi-constituent spinning, ICS etc.
Filament yarn spinning systems
- Wet spinning
- Dry spinning
- Melt spinning
- Bicomponent spinning
- Biconstituent spinning
- Film splitting
- Integrated multicomponent yarns
- Cover sun yarns
- Selfil yarns
- Aerodynamic spinning
- The technique involves extrusion through a spinneret of two different types of the same polymer
- There are three methods of bicomponent yarn production
- Side by side extrusion
- Extrusion through one spinneret enclosed in another
- Distribution of drops of molten polymers
This technique utilizes two different polymers that are combined and extruded in the same manner
Melt extrusion of the polymer through a wide die but with a very narrow slit to form a sheet of film which is later broken /cracked by mechanical means into a mat of fibers Or embossed with a roller having patterned indentations to fibrillate the film
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Integrated composite spinning(ICS)
The process entails passing a monofilament or a multifilament strand (Carrier) through a polypropylene Polymer (binder resin) and then immediately embedding part of the length of staple fibers into the polymeric resin
Different types of staples of different sizes and colors can be used to incorporate desirable properties, effects, and appearances.
The technique wraps fine continuous filament man-made fiber around a core of untwisted natural or man-made staple fiber to produce yarns in a wide range of counts.
The self-twisted staple core is initially wrapped with a filament yarn in alternating S and Z phases; a second filament yarn is then wrapped around these in alternating opposite Z and S twists.
This system passes a continuous Multifilament yarn together with staple fiber through a Pneumatic device which causes the filaments to twist and curl entrapping the staple fibers in the snarls.