Wearable Article Having A Temperature Change Element

Abstract

A wearable article useful for facilitating toilet training. The wearable article includes a temperature change element providing a cool/wet signal when wetted which causes discomfort to the wearer. The temperature change element comprises a temperature change substance disposed on an impermeable material in order to maximize the thermal signal provided to the skin of the wearer.

1 . A wearable article worn about the lower torso of a wearer, the wearable article comprising a temperature change element including a permeable layer, an impermeable layer disposed in a face-to-face arrangement with the permeable layer, and a temperature change substance interposed between the permeable layer and the impermeable layer, wherein urine deposited onto the temperature change element can penetrate through the permeable layer in a z direction to the impermeable layer and wherein the impermeable layer prevents urine from passing completely through the temperature change element in the z direction and supports the movement of urine in an x-y plane to wet the temperature change substance. 
     
     
         2 . The wearable article as defined in  claim 1 , wherein the temperature change substance includes an endothermic salt. 
     
     
         3 . The wearable article as defined in  claim 1 , wherein the temperature change element is elastically foreshortened. 
     
     
         4 . The wearable article as defined in  claim 3 , wherein the temperature change element comprises a multiplicity of compartments and the temperature change substance is disposed in each of the compartments. 
     
     
         5 . The wearable article as defined in  claim 4 , wherein the temperature change element comprises a multiplicity of fluid channels disposed parallel to the multiplicity of compartments. 
     
     
         6 . The wearable article as defined in  claim 1 , wherein the permeable layer faces the body of the wearer.