短纤纱

Plyfil composite yarns is similar to two-ply yarn structures.

纺纱方法决定着成纱结构，成纱结构与纱线组成原料又决定了纱线的性能。sirofil复合纱线纺纱时长丝与短纤纱须条的间距及长丝的张力，plyfil复合线加工时二组分间并线张力对成纱结构及纱线的性能有着重要影响。sirofil复合纱的成纱横截面呈近似圆形结构，长丝位于成纱的一侧；纵向呈有"股线螺纹"的单纱外观。plyfil复合线具有类似于传统双股线的横截面和纵向外观。

The classification, mixing mode and the structure of core-sheath filament/staple composite yarns were illuminated. An analysis of the migration mechanism of fibers and the unreeled conditions of rigid, flexible and elastic filaments was made, and the spinning parameters were analyzed and optimized. Then, the process technology of spinning core-sheath filament/staple composite yarns on the ring spinning frame using rigid, flexible and elastic filaments was put forward.

先回顾短纤／长丝复合纱的分类、组合方式及其结构，进而分析刚性长丝、柔性长丝、弹性长丝的退绕条件、纤维转移机制，优化了复合成纱的工艺参数，提出以制备芯鞘型刚性长丝包芯纱、柔性长丝包芯纱、弹性长丝包芯纱为目标的复合纺纱工艺技术和纺纱工艺参数。

Mechanical properties of the four-component filament/staple fiber core-spun yarn and its core yarn (PET/PU interlaced yarn) were tested by electronic single yarn strength tester, the hairiness was tested by hairiness tester, and the evenness was tested by electronic evenness tester.

用电子单纱强力仪测试了复合纱芯丝及四组分长丝／短纤复合纱的力学性能，用纱线毛羽仪测试了四组分复合纱线的毛羽，用电子条干均匀度仪测试分析了四组分复合纱线的线密度不匀率。

The tensile properties of composite yarns mainly depend on the tensile properties of filament, and their tenacity is higher than that of two-fold Wool/PET staple fiber yarns. The difference of the tenacity and breaking extension between Sirofil and Plyfil composite yarns is not significant.

与传统短纤维合股线相比，毛涤复合纱线的强伸特性主要取决于长丝的强伸特性，复合纱线的断裂强度大于毛涤短纤合股线的断裂强度；Sirofil复合纱与Plyfil复合线的强伸特性无显著性差异。

Twists of two PET filament/wool and PET staple Sirofil composite yarns are tested by the longest-untwisted yarn method which is proposed by author here, and compared with the results tested by twist break method and untwist-retwist method.

捻度是纺织纱线重要的结构因素或特征。捻度与纱线的许多性质有关，例如纱线的拉伸强度、纱线纵向和横截面形态、尺寸和结构稳定性、纱线的光泽、手感风格等。无论是短纤纱、长丝纱，还是长丝/短纤维复合纱都是如此。

The characteristics of new BT 923 semi-automatic rotor spinning machine developed by Rieter are described.

新设计的型号为BT923的半自动转杯纺纱机可以生产出具有极高性价比的高质量转杯纺短纤纱。

After yarn formation, both spun and continuous filament yarn s are not immediately usable in fabric forming systems.

纱线形成之后，无论是短纤纱，还是连续长丝纱都不能立即用来生产织物。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。