| 摘要 |
This invention provides a unit for forming alternatively a relatively small box or one-half of a relatively large box. It includes a rectangular cardboard sheet with interconnected doubled over side and end edge panels. Localized parts of the side edge panels are secured by adhesives to the sheet. Score linesare provided for bending and perforations allow severing the side edge panels for making a relatively small box with integral lid. The side edge panels are left intact and the adhesive is torn away in forming one-half of a relatively large box.
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