Method of manufacturing a foot warming exothermic device and the foot warming exothermic device

Abstract

A method of manufacturing a foot warming exothermic device comprises placing an exothermic composition of a viscous fluid form by printing or coating on one surface of a thin sheet base material and in at least one predetermined portion of the one surface to such a configuration as to cover a desired site of a human foot, and then placing a thin sheet covering material on the fluid exothermic composition so as to cover the exothermic composition, at least one or part of the base material and the covering material being gas permeable.

1 . A foot warming exothermic device which comprises a sheet base material, an exothermic composition in a viscous fluid form, said exothermic composition having a sufficient amount of water to form a barrier layer that blocks oxygen when applied in a predetermined area of said sheet base material, a covering material covering said exothermic composition, and at least a part of at least one of said base material or said covering material being gas permeable.  
     
     
         2 . A foot warming exothermic device as set forth in    claim 1   , in which said exothermic device is configured to cover a whole area of a sole of a human foot.  
     
     
         3 . A foot warming exothermic device as set forth in    claim 1   , in which said exothermic device is configured to cover at least that part of a sole of a human foot comprising toes, instep and/or heel of the foot.