Introduction for Polyester Hollow Fiber Spinning Process

For producing hollow fiber, spinning part is very important that it determines the shape of fiber whether it is well conjugated and hollow shape. 

When the high temperature PET melt flow into the Spinning beam. There are spinnerets inside the spin packs for hollow shape processing. 

The melt flows out of the microholes of the spinning nozzles and form the dribble of the melt. The C type hole on spinnerets helps form the hollowness of fiber.  

Extrusive melt dribble is cooled evenly on the periphery of Tow after it flows through Circular Quench Device, the inside is cooled lastly relative to the periphery, thus forming the conjugated fiber after stretching, this Process need fast cooling with designed cooling direction.