Structural equation was derived to predict absorption rate in nonwoven webs. The variables considered for the equation were fiber denier, fiber density, fiber blend ratio, fiber contact angle, and web thickness. Experiment was carried out to verify the equation in air-laid nonwovens prepared using polyester and rayon fibers with different blend ratios. The results showed that although there was a difference of approximately an order of magnitude between the calculated and the measured rates, the relationship was linear with a high correlation coefficient.