| 摘要 |
PROBLEM TO BE SOLVED: To improve strength against a load to a side of a cushion by a simple structure. SOLUTION: A box-formed packaging cushion formed of cardboard and having an aperture for inserting an object to be packaged has the cardboard on a side forming a periphery of the aperture formed by three or more sheets of the cardboard overlaid, thereby improving strength of the cushion.
|
