Abstract
Melt blowing is a major process for producing nanofibrous nonwovens. Compared to another technology for producing nanofibrous nonwovens, electrospinning, melt blowing applies high-speed air flow field to attenuate the extruded polymer jet. It is known that the essential electrospinning mechanism is a rapidly whipping jet in an electric field. While there are few studies on the fiber whipping in the melt-blowing process. In this study, a high-speed camera was used to capture the fiber path below a single-orifice melt-blowing swirl die. The spiral path of the fiber was revealed. The characteristics of the whipping amplitude, whipping frequency, and the fiber velocity were obtained. Fiber diameter reduction ratio contributed by the spiral path was calculated by establishing a mathematical model. The study indicates that spiral path of the whipping plays an important role in fiber attenuation near the die.
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Xie, S., Zeng, Y. Fiber spiral motion in a swirl die melt-blowing process. Fibers Polym 15, 553–559 (2014). https://doi.org/10.1007/s12221-014-0553-9
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DOI: https://doi.org/10.1007/s12221-014-0553-9