Investigation of Moisture Management and Frictional Characteristics of Top Layers Used in Disposable Absorbent Hygiene Products

Absorbent hygiene products are developed to absorb body fluids. They are designed as layered structures and include baby diapers, adult incontinence products, and feminine care products. Their top layers - namely cover stock and acquisition and distribution layer (ADL) - should pass the liquid quickly to the underneath layers and also distribute it on the structure before reaching the absorbent core. Hence, the performance of the hygiene products is closely related to the interaction between these layers. Furthermore, a wetted cover stock can lead to discomfort sensation due to the skin-product interaction. Therefore, this study aimed to investigate both moisture management and frictional characteristics of top layers, considering their interactions. The materials used in this study are currently used in commercially available absorbent hygiene products. For the study, nine combinations were formed with cover stocks and ADLs having different structures and unit masses. The findings indicated that their physical and structural properties had substantial effects on removing liquid away from the skin quickly and transferring it to the absorbent core. Also, the mass of ADLs was found to be effective on the frictional behaviors of combinations. The results of this study can be used to design absorbent hygiene products that enhance wearer comfort.