| 摘要 |
<p>PURPOSE:To provide a packaging case having double layer and capable of preventing tampering. CONSTITUTION:A cylindrically formed outer case A has in its interior a likewise cylindrically formed inner case B connected therewith via a bottom board 2, when the outer case A and the inner case B are made up, each bottom board 2 is folded double, and one bottom board 2 is inserted between the double folded parts of the adjoining bottom board 2 to form a bottom board 2. Therefore, such a double layer packaging case is highly effective in tampering prevention and the inner case in this double layer structure can produce the cushioning effect.</p> |
