Warming tool in a sheet form
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United States of America Patent
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Sep 4, 2012
Issued Date -
N/A
app pub date -
Jul 29, 2004
filing date -
Jul 31, 2003
priority date (Note) -
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Abstract
A warming device of sheet form having (1) a heat generating sheet prepared by papermaking and containing an oxidizable metal, a moisture retaining agent, and a fibrous material and (2) an air permeable holder holding the heat generating sheet. The warming device has a thickness of 0.1 to 10 mm and a flexural strength of 0.01 to 0.3 N/cm. The sheet preferably has a thickness of 0.1 to 2.0 mm. The fibrous material preferably has a CSF of 600 ml or less.
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