Abstract:

The melt blowing technology for micro-fiber manufacture was researched by numerical and experimental methods. According to Shambaugh one dimensional melt-blowing model, the relation between the fiber diameter and the processing parameters such as air velocity, polymer flow rate and diameter of the orifice were obtained by numerical methods. The order of the effect degree of three processing parameters on the diameter of final fiber was as follows: the polymer flow rate was the first, the air velocity was the second and the diameter of orifice was the last. At the same time, the conclusion that the diameter of the orifice should not too  big was also drawn according to the melt blowing practice. Then, the melt blowing experiment was designed and carried out and the nano-fiber was obtained. It was certified that the relation between three processing parameters and the fiber diameter and the order of the effect degree were correct. The manufacturing technology of micro-fiber was also testified to be valid.

Key words: melt blowing, micro and nano fiber, numerical method, polymer flow rate, air velocity, diameter of orifice