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Diaper Having Centrally Located Chromatographic Layer With Peripherally Located Wetness Indicator



Published February 4, 2003
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Patented is a diaper with a diaper substrate with a peripheral edge and a centrally located region where fluid from a user will make initial contact. A fluid transport layer is disposed within the diaper substrate and has a peripheral edge and a centrally located portion disposed at the centrally located region of the diaper substrate and a wetness indicator on the transport layer’s peripheral edge and extends along part of the substrate’s peripheral edge. The fluid transport layer is made of a material capable of drawing fluid by capillary action from the centrally located portion of the layer at the centrally located region of the diaper substrate toward the peripheral edge of the layer and into contact with the wetness indicator, which is a material capable of eliciting a visible response in the presence of fluid.