| 摘要 |
PROBLEM TO BE SOLVED: To constitute a packaging case having a window hole by folding one plastic sheet and thus preventing an article from getting over the window hole and dropping off to the outer side of the case even if the case is tilted or the article is rotated.SOLUTION: A window hole 16 is formed on one face on a peripheral side face of a packaging case 1. A belt 17 is installed within the window hole 16 astride right and left sides or upper and lower sides of the window hole 16. The belt 17 includes a wide width portion 17a and narrow width portions 17b, 17b alternately arranged on both sides of the wide width portion. A length of the belt 17 can be extended by inverting the wide width portion 17a. |
