首页>
外国专利>
PROCESS FOR MAKING POLY(TRIMETHYLENE TEREPHTHALATE) STAPLE FIBERS, AND POLY(TRIMETHYLENE TEREPHTHALATE) STAPLE FIBERS, YARNS AND FABRICS.
PROCESS FOR MAKING POLY(TRIMETHYLENE TEREPHTHALATE) STAPLE FIBERS, AND POLY(TRIMETHYLENE TEREPHTHALATE) STAPLE FIBERS, YARNS AND FABRICS.
展开▼
机译:制备聚对苯二甲酸丙二醇酯短纤维和聚对苯二甲酸丁二醇酯短纤维,纱线和纤维的方法。
展开▼
页面导航
摘要
著录项
相似文献
摘要
A process of making polytrimethylene terephthalate staple fibers, comprising (a) providing polytrimethylene terephthalate, (b) melt spinning the melted polytrimethylene terephthalate at a temperature of 245-285C into filaments, (c) quenching the filaments, (d) drawing the quenched filaments, (e) crimping the drawn filaments using a mechanical crimper at a crimp level of 8-30 crimps per inch (3 - 12 crimps/cm), (f) relaxing the crimped filaments at a temperature of 50-120C, and (g) cutting the relaxed filaments into staple fibers having a length of about 0. 2-6 inches (about 0.5 - about 15 cm), and polytrimethylene terephthalate staple fibers, yarns and fabrics. Further, a process of optimizing the crimp take-up of a polytrimethylene terephthalate staple fiber comprising determining the relationship between denier and crimp take-up and manufacturing staple fibers having a denier selected based upon that determination.
展开▼