Micro spinning nozzle having 3D profile for fiber generation with spiral air flow

This paper presents a novel application of MEMS technology to the miniaturization of air-flow type fiber-generation technology. In Murata vortex spinning (MVS) machine, a nozzle for continuous air-jet blowing, which is the key component in producing fibers with distinctive nature, is equipped in the spinning chamber. With the intention of extending the MVS principle to smaller-scale fiber generation, we propose MEMS-based nozzles having 3D profile, transformed from conventional oblique jet holes with straight cylindrical shape. We design the nozzle geometry using computational fluid dynamics (CFD) simulations, and examine the applicability of presently fabricated nozzles to fiber generation through simplified experiments.