In-Plane Liquid Distribution of Nonwoven Fabrics: Part I — Experimental Observations

In nonwovens, fiber orientation is an important characteristic as it directly influences the properties of the material. Fiber orientation is an important structural characteristic. In modeling the performance of nonwovens, it is desirable to understand the impact of fiber orientation and anisotropy on performance. With respect to absorbency and in-plane wicking, the role of structure anisotropy cannot be underestimated. In a series of papers, we plan to explore the manner in which fluids flow though nonwovens and will develop a framework for the prediction of wicking. This paper reports on the development of an improved test method and presents preliminary data on in-plane moisture movement in a series of nonwoven fabrics.