| 摘要 |
PROBLEM TO BE SOLVED: To provide a lightweight and compact packaging container which facilitates packaging operations, reduces transport costs, and can surely maintain a preset temperature for many hours, when commodities are transported in a heat-retaining state. SOLUTION: This packaging container 100, which is composed of an insulating container 1 and a container lid 2, houses heating elements 6 and 6' which are constituted in such a manner that exothermic compositions 6-2 and 6-2', which generate heat by virtue of the existence of air, are covered with air supply restricting materials 6-1 and 6-1'; air supply holes 3 and 3' are provided in the packaging container 100; the heating elements 6 and 6' are held in a state of being sandwiched between articles 5-1 and 5-2 to be housed, and the insulating container 1; the holes 3 and 3' are covered with quantity-of-airflow adjusting materials 4 and 4' for adjusting the quantity of airflow into the packaging container 100; and protective materials 11a and 11a' for preventing closing of the holes 3 and 3' are provided. |
