PTT staple fiber production method

摘要

The invention provides a method for producing polytrimethylene terephthalate staple fibers, polytrimethylene terephthalate radiation melt the base polymer and, taken in a spinning fiber through a take-up roller, to store in the can to the fiber as a non-drawn bundle, 0.5 to 12% by weight of the water content of the non-drawn bundle is related to a method which comprises subjecting to a post, the stretching step the bundle of storage under conditions of a temperature of not more than 35 ℃ environment around the bundle of unstretched.