A PROCESS FOR PREPARING SPANDEX FIBER WITH EXELLENT UNWINDING PROPERTY

摘要

The present invention relates to a method for producing a spandex fiber with improved unwinding property, and more specifically, to a method for producing a spandex fiber which is not only capable of efficiently improving an irregular ballooning phenomenon, a tension spike phenomenon and others while the spandex fiber is unwound by injecting polyethylene glycol into a polyurethane urea solution as a spinning solution, and thus producing the spandex fiber; but also improves unwinding property of the spandex fiber without having a negative effect on other physical properties including adhesive properties with a hot melt. In producing a spandex fiber using a polyurethane urea spinning solution, a method for producing a spandex fiber with excellent unwinding property comprises injecting an anti-sticking agent as a polyethylene glycol compound selected from a polyethylene glycol polymer represented by chemical formula 1 or derivatives thereof in the form of slurry into a polyurethane urea spinning solution. The polyethylene glycol polymer of the chemical formula 1 has a molecular weight of 100 to 3000.