Chemical Spinning

1. Preparing a viscous or syrupy dope (polymer / spinning solution)2. Extruding the dope through a

spinneret to form a fiber.3. Solidifying the fiber by coagulation, evaporation, or cooling.

1. Preparing a viscous or syrupy dope (polymer / spinning solution)

2. Extruding the dope through a spinneret to form a fiber.

3. Solidifying the fiber by coagulation, evaporation, or cooling.

Dry Spinning Melt Spinning Wet Spinning

There are three major types of manufacturingSynthetic Fibers:

a. Wet spinning

b. Dry spinning

c. Melt spinning

• Polymer is dissolved by chemicals.

• Fiber is spun into chemical bath.

• Fiber solidifies when coagulated by bath.

• Polymer chips are dissolved by solvent

• Fiber is spun into warm water

• Fiber solidifies by evaporation of the solvent

MELT SPINNING

• Polymer chips are melted in autoclave.

• Fiber is spun out into the air.

• Fiber solidifies on cooling