纺丝温度的设定取决于原料的熔融指数和对产品物理性能的要求。原料熔融指数越高，相应地纺丝温度越高，反之亦然。纺丝温度直接关系到熔体粘度，温度低。熔体的粘度高，纺丝难以进行，容易产生断丝、僵丝或粗丝团，影响产品的质量。所以，为了降低熔体粘度，提高熔体的流变性，一般采用提高温度的办法。
The setting of spinning temperature depends on the melt index of raw materials and the requirements of physical properties of products. The higher the melt index is, the higher the spinning temperature is, and vice versa. The spinning temperature is directly related to the melt viscosity, and the temperature is low. Because of the high viscosity of the melt, it is difficult to spin, and it is easy to produce broken, rigid or coarse filaments, which affects the quality of the product. Therefore, in order to reduce the viscosity of the melt and improve the rheological properties of the melt, the method of increasing the temperature is generally adopted.
纺丝温度对纤维的结构和性能有很大的影响。纺丝温度越低，熔体的拉伸粘度越高，拉伸阻力就越大，丝条就越难拉伸，要得到同样纤度的纤维，温度低时牵伸气流的速度要比较高。
The spinning temperature has a great influence on the structure and properties of the fiber. The lower the spinning temperature is, the higher the drawing viscosity of the melt is, the greater the drawing resistance is, and the more difficult it is for the sliver to stretch. In order to get the same size fiber, the speed of the draft air flow is higher when the temperature is low.