Polypropylene case of thermoplastic fibers, it has good deformation resistance and thermal stability. Therefore, production of polypropylene stretch yarn using false-twist texturing method.

False twist and coil structure is directly related to the false-twist yarn. High false twist, curl fine, good appearance. But the false twist is too high, causing uneven twist, strength and elongation decreased. Within an appropriate range, false twist of polypropylene stretch yarn strength and elongation less affected.

False twist heating temperature is high, good deformation characteristics of wire. But the temperature is too high, it can cause strength and elongation drop wire to form a stiff wire, yarn and even melt adhesion phenomenon. When the temperature is heated to 150 �� melt adhesive filaments appear, when the temperature dropped to 145 ��, melt adhesion disappears, breakage rate is still very high; when the temperature is lowered to 140 ��, the breakage rate is reduced, the smooth false twisting operation .

Looking for high-quality, cheap, cost-effective polypropylene stretch yarn? To Zhuji of Zhejiang Datang Chemical Fiber Co., Ltd. Dabao ah! We offer a pleasant shopping trip for you!