| 摘要 |
PURPOSE: A double container is provided to secure solidity and stability thereof by improving the welding structure of an outer container and an inner container. CONSTITUTION: A double container comprises: a protrusion(120) which is projected downward from the upper end of the outer container; a surrounding unit(140) which is extended downward to a location corresponding to the protrusion from the upper end of the inner container and surrounds the protrusion from the outside; filler(160) which is charged in the inner space of the protrusion; and a finished unit(150) which is extended from the bottom of the surrounding unit and covers the lower jaw of the protrusion. |
