On the basis of experiments,the factors which influenced the shape of PA12 double-lumen catheter cross-section in process of extrusion,including the die temperature,the screw rotational speed,the tractive rate and the volumetric gas flow were analyzed.
在实验的基础上,分析了聚酰胺(PA)12双腔医用导管挤出过程中机头温度、螺杆转速、牵引速率和注气流量对导管截面形状精度的影响。
In this dissertation, gas flow controller system was designed.
为得到较好的导管截面形状,本文从材料的流变特性、机头设计、注气流量的控制以及挤出工艺参数的调节四个方面进行了实验研究,得出的结论对双腔导管的挤出成型有一定的参考作用。