THE BASIC PRINCIPLES OF SPANDEX YARN COVERING MACHINE

Chemical path to polyurethane polymer used in manufacture of spandex. Spandex is principally made up of a polyurea derived from the reaction of a diol in addition to a diisocyanate. Two classes of spandex are defined with the "macrodiols". A person course of macrodiols may be the oligomer developed from tetrahydrofuran (i.Subsequently, DuPont Fiber

This would make the amorphous segments extended, thus raising the size on the fiber. If the fiber is stretched to its greatest size, the rigid segments once more bond with each other. The amorphous segments remain in an elongated point out. This will make the fiber stiffer and much better. Following the power is eliminated, the amorphous segments r