| 摘要 |
<p>A plastics sheet (4) is applied on both sides of a punched corrugated cardboard blank, said sheet being welded together outside the periphery (3) of the blank to seal said blank. Punched holes in the blank covered with sheet can be folded over other areas covered by sheet and welded to it in the formation of a finished package box. Such a package is suitable for transport and storage of fresh food.</p> |
