EXOTHERMIC STRUCTURE THAT IS DIRECTLY APPLIED TO SKIN AND METHOD FOR PREPARING THE STRUCTURE

• Main Authors: ODA MICHIKO, ODA KEIZO, HATA SATOKO
• Format: Patent
• Language: English
• Published: 22.04.2010
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS

PROBLEM TO BE SOLVED: To provide an exothermic structure wherein an adhesive layer exists only in an outer periphery of the exothermic structure and has a necessary adhesive force. SOLUTION: The exothermic structure that is directly applied to skin comprises a pouch having an air-permeable side and an air-impermeable side, and an exothermic composition that is incorporated into the pouch in a sealed state. The air-impermeable side comprises an inner polymer sheet layer, an intermediate adhesive layer that is used to directly applied to skin, and an outer release sheet, wherein the adhesive layer is formed in part or entire of an outer periphery on an inner surface of the release sheet. The total area of the adhesive layer is 10 to 40% of the area of the release sheet, the adhesive layer has an adhesive portion(s) and a non-adhesive portion(s) or only an adhesive portion(s), the total area of the adhesive portion(s) is 30 to 100% of the total area of the adhesive layer, and in the outer periphery the total length of the adhesive portion(s) is 60 to 100% of the total length of the adhesive layer. COPYRIGHT: (C)2010,JPO&INPIT