| 摘要 |
PURPOSE: A manufacturing method of portable heating package is provided to prevent heat loss, and to heat food evenly by forming the cavity with overlapping heat-resisting sheets and embedding heating material in the package. CONSTITUTION: Long sheets are overlapped unidirectionally, and the heating part is formed in the overlapped sheets by melting the staple shaped part with a first roll. Sheets are mounted in upper and lower parts of molten sheets, and the containing part is formed in the fourfold sheet by sticking edges with a second roll. A heating member is inserted to the heating part, and the heating part is sealed by melting the lower part of the fourfold sheet including the heating member. Food is heated evenly by putting in the portable heating package.
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