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Updated: Jan 25, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
Published on: September 26, 2016
Lateral Diffusion of a Free Air Jet in Slot-Die Melt Blowing for Microfiber Whipping
Sheng Xie1,2, Wanli Han3, Xufan Xu4
1College of Material and Textile Engineering, Jiaxing University, Jiaxing 314001, China. xie@zjxu.edu.cn.
Abstract:
In melt blowing, microfibrous nonwoven material is manufactured by using high-speed air to attenuate polymer melt. The melt-blown air jet determines the process of polymer attenuation and fiber formation. In this work, the importance of lateral velocity on the fiber was first theoretical verified. The lateral diffused characteristic of the air flow field in slot-die melt blowing was researched by measuring the velocity direction using a dual-wire probe hot-wire anemometer. Meanwhile, the fiber path was captured by high-speed photography. Results showed that there existed a critical boundary of the lateral diffusion, however, air jets in the x-z plane are a completely diffused field. This work indicates that the lateral velocity in the y-z plane is one of the crucial factors for initiating fiber whipping and fiber distribution.
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