Patent Number: 7,611,767

Title: Foot warming heating element and method of manufacturing foot warming heating element

Abstract: There is provided such a heat-generating body for warming a foot in that a heat-generating composition is used that can retain the shape thereof irrespective of the pressure inside the container bag upon using by application to a foot, a footgear or a sock. The heat-generating body of the invention for warming a foot is characterized in that it contains a heat-generating formed article causing a heat-generating reaction in the presence of air and having a shape retaining degree of 70 or more charged in a container bag constituted with a base material, a covering material and the like. Further a process is provided for producing a heat-generating body for warming a foot in that the heat generation reaction of the heat-generating composition is suppressed to prevent loss due to the heat-generating reaction during production, quality deterioration of the heat-generating composition, and other problems.

Inventors: Usui; Kaoru (Tochigi, JP), Aida; Michio (Tochigi, JP), Kimura; Hisao (Tochigi, JP), Nakamura; Masato (Tochigi, JP), Sakamaki; Yoshikazu (Tochigi, JP), Dodo; Toshihiro (Tochigi, JP)

Assignee: Mycoal Co., Ltd.

International Classification: B32B 5/22 (20060101); B32B 37/00 (20060101)

Expiration Date: 1/03/02017