Process of making polyurethane elastomer thread

摘要: In a process for producing melt-spun elastomer threads with high modulus, breaking elongation of 80 to 300% and boiling shrinkage at least 20%, multifilament elastic are obtained by spin-drawing. A molten mass polyurethane granulate is simultaneously drawn drawing factor 1.5 wound on spools 600 m/min. or more. The spun-drawn, non-adhesive TPU thread can be processed form flat structure, the elasticity which regulated setting tempering in hot water. also tempered before being order acquire desired properties.