Dry Spinning Flow Char for singeing

Dry Spinning Flow Chart

Advantage:

1.      Suitable for producing fire denier fibers.
2.      No need of wash of fibre.

Disadvantage:

1.   Can’t be used for stable fiber production.
2.   Investment cost is high.
3. Toxic and risk of explosion.

Dry Spinning Solvent:

          Fiber                             Solvent

1.      Cellulose                    Acetone + (2-6)% Water

2.      Tri acetate                  Methylene  Chloride  40% = Methanol 10%

3.      Poly Acrylonitrile      DMF, DMAC ( Di-methyl formation/ Di- methyl Acetamide)