| 摘要 |
<p>PURPOSE:To safely enable the heating of a food and drink vessel even if an easy-open cap is used, in a heat-generating-function-provided vessel in which a self-burning heating agent is used, by providing the bottom of a cylindrical vessel with a projected part projected toward the inside of the vessel. CONSTITUTION:The diameter (b) of the outer cylindrical part and the diameter (a) of the projected part of a vessel must have a relationship 0.5<=a/b<=0.75, and the length of the projected part is required to be 50 to 75% of the length of the cylindrical vessel in the axial direction. As a heating agent for heating the vessel, a self-burning heating agent of 500 to 900cal/cc is selected. In the cap, treatment such as a cut for opening the cap is performed. The pressureresisting strength of the cap must be 3 kg/cm<2> or more. As a result, the food and drink vessel is constituted so that the diameter of the outer cylinder is usually within the range of 40 to 100mm. And the easy-open cap is made to have an opening diameter smaller than the outside diameter of the vessel as much as several millimeters, and although the easy-open cap is used, such a vessel safe in handling and excellent in thermal efficiency can be obtained.</p> |
