| 摘要 |
A carton blank (10) comprises hingably interconnected main panels (12,30,32,34) and a corner gusset structure (50,51) section hingably connected to two adjacent main panels (12,30). One of the main panels (12) has a fold line (20) which lies substantially parallel to the hinged connection (22) between the adjacent two panels. The fold line defines two panel portions (12,12a) in the main panel (12) which can be displaced from coplanar alignment with one another about the fold line (20) during formation of a carton in order to facilitate formation of said corner gusset structure.
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