| 摘要 |
<p>PURPOSE:To improve the efficiency of sterilizing treatment, to impart heat-resisting properties in an extent that a package can be held by a hand on heating and cooling and to prevent spill at the time of unsealing by fitting and unifying an internal vessel, in which content is filled and to which sterilizing treatment is executed, to an external vessel. CONSTITUTION:The quality of material having heat-resisting properties capable of coping with heating sterilization or retort sterilization is used for an internal vessel 2 having heat-resisting properties, and the internal vessel 2 has a flange for fitting and unifying an internal-vessel flange section 3 to the lower section of the inner surface of the opening section of an external vessel 1 by a fitting section 6. The external vessel 1 has heat-resisting properties and strength excellent in shape retention, and has structure in which an air gap section 9 is formed partially between the walls of the external vessel 1 and the internal vessel 2. An internal vessel cover material 4 has a peeling tongue 5 for unsealing, and has structure in which the peeling tongue 5 for unsealing of the internal vessel cover material is picked up easily by a finger. The internal vessel, in which content is filled and which is sterilizing-treated, is inserted into the external vessel, and fitted and unified by the fitting section 6, and the opening section of the external vessel is hermetically sealed by an external-vessel cover material 7.</p> |
