| 摘要 |
PROBLEM TO BE SOLVED: To provide a storage container which is formed of a hardly sealable synthetic resin sheet in a three-dimensional form. SOLUTION: This storage container is three-dimensionally formed of a hardly sealable synthetic resin sheet 1 and planar sheets 3 by welding the folded-back ends 2 of the sheet 1 to the sheets 3. In this storage container, a substrate for sealing 7 is arranged along the stretch of the sheet 1 between the folded- back ends 2 and the folded-back ends 2 are brought into contact with the planar sheets 3 and both are contact-bonded and sealed by the substrate 7. |
