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US 2006/0040082 A1Published application
Disposable body warmer and method of producing the same
OwnerKunihiro Tabuchiinventor
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OwnerKunihiro Tabuchiinventor
Estimating the term…
An exothermic composition powder is sealed in a bag body of synthetic resin film having a top sheet pierced to form a number of vent holes, and the inside of the top sheet is provided with a leakage preventive sheet for preventing leakage of the exothermic composition powder through the vent holes. A closing sheet for closing the vent holes is releasable stuck to the outside of the air-permeable sheet. The bag body comprises the top sheet and a back sheet having airtightness, and the region of the top sheet excluding the peripheral edge thereof is formed with a number of said vent holes in the form of fine holes or small holes. This makes it possible to provide easy and inexpensive production, to prevent leakage of the exothermic composition powder inside the bag body, and to dispense with the conventional sealing bag.
A disposable body warmer comprising an exothermic composition powder sealed in a bag body of synthetic resin film having at least on one surface thereof an air-permeable sheet having a number of vent holes and, in the inside of said air-permeable sheet, a leakage preventive sheet for preventing leakage of said exothermic composition powder through said vent holes.
A method of producing a disposable body warmer, the body warmer comprising an exothermic composition powder sealed in a bag body comprised of synthetic resin film provided with a top sheet having vent holes, a back sheet having airtightness, and a leakage preventive sheet for preventing leakage of said exothermic composition powder from said vent holes, the leakage preventive sheet being stuck to the inner surface of said top sheet, said method comprising cutting a leakage preventive sheet material into unit lengths, sticking the leakage preventive sheet of unit length to the inner surface of band-like top sheet material having vent holes, interposing an exothermic composition powder between said top sheet material and back sheet material in a region corresponding to said leakage preventive sheet, and sealing said top sheet and said back sheet around the outer peripheries of the leakage preventive sheet and exothermic composition powder.
Dependencies are inferred from the claim text.