A new model has been developed that predicts the compression behavior of thick, nonwoven fiber assemblies at high stress levels. The model uses the Poisson distribution to describe how fibers are stacked on top of one another during web formation. The stress/thickness relationships developed are based solely on the compression properties of the stacked fiber mass. Effects predicted by the model include greater packing uni- formity for increasing web weight, decreasing fiber diameter, and decreasing fiber transverse compression modulus.
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