Blank for outer package utilized for packing object e.g. chocolate bar, has tab portion comprising portion working as barb, which is locked such that tab portion is unlocked to open package under destruction from aperture of cover portion

摘要

The blank (10) has side sections (31, 32) hinged at transverse sides of a bottom section (11). A cover portion (15) closes an outer package folded from the blank and comprises a plug-in tab portion (22), which cooperates with a slot-shaped aperture (43) in another cover portion (42). The plug-in tab portion comprises a portion (27) working as a barb, which is locked when the plug-in tab portion is inserted into the aperture such that the plug-in tab portion is unlocked to open the outer package under destruction from the aperture of the latter cover portion.