首页>
外国专利>
process for the production of polytrimethylenterephthalat - staple fibers and polytrimethylenterephthalat - staple fibers, yarns and flu00e4chengebilde
process for the production of polytrimethylenterephthalat - staple fibers and polytrimethylenterephthalat - staple fibers, yarns and flu00e4chengebilde
展开▼
机译:短纤维聚三甲基对苯二甲酸和短纤维,纱线和聚三甲基对苯二甲酸的生产方法
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 245-285° C. 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 50-120° C., 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▼