Pilot & small scale production wet spinning systems
Where melt spinning solutions cannot succeed, FET provides a viable alternative with pilot and small scale production FET-200 Wet Spinning Systems. These may be used for a variety of solvent and polymer combinations:
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The FET-200 Series is available for multifilament, monofilament and fibre in both laboratory and pilot scale. With many high performance applications, such as biomedical and composites, these systems are proven and successfully operating worldwide.
FET-200 Features and Benefits
Dry-jet wet spinning methodThis method, also known as gel spinning, is an alternative to wet spinning. Some fibres, when spun directing into the bath, may create micro-voids that negatively affect the fibre properties. The polymer is dissolved in a solvent to make the fibre solution, which is then extruded under heat and pressure into an air gap before it enters a coagulation bath. The produced fibre is then washed and dried before it is heat treated and drawn. This method is often required for high performance fibres with a liquid crystal structure Vertical wet spinning methodIn the past, wet spinning has always been conducted by submersing the spinneret into the solution and conducting the extrusion horizontally. However, at FET, we have recently developed a vertical spinning system. This line utilises the Venturi effect to allow for better exposure of coagulation media with the dope and easier threading up of the yarn. This is particularly useful when working with more challenging coagulation solutions such as concentrated sulphuric acid or highly basic solutions. |
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All FET-200 Wet spinning systems are tailor made and take into account required throughput polymer/solvent combination and downstream process conditions. | ||