Patent ID: 7540404

Claim:
A packaging box with opposite inner and outer surfaces, the inner surface defining an indication portion to indicate information, the packaging box being configured to be opened and spread flat for accessing the indication portion on the inner surface of the packaging box, the packaging box comprising: a substantially rectangular tubular body having opposite first and second ends, opposed front and rear plates extending from the first end to the second end of the body, opposite first and second side plates hinged to the front and rear plates and extending from the first end to the second end of the body; first and second lids joined to the rear plate along creases at the respective first and second ends of the body; first and second tongues joined to the respective first and second lids along creases at locations on the respective first and second lids opposite the rear plate, the lids being disposed adjacent portions of the front plate facing inwardly on the packaging box; first and second gluing portions securing the first and second tongues to the front plate at locations spaced inwardly from the first and second side plates of the body; a side fracture guide extending substantially from the first end to the second end of the body at locations along the front plate substantially adjacent the first side plate; a substantially U-shaped first end fracture guide formed in portions of the front plate adjacent the first end and substantially surrounding the first gluing portion, the substantially U-shaped first end fracture guide includes a first leg intersecting the first end of the body, a second leg substantially parallel to the first end of the body and a third leg intersecting the first end of the body at a location spaced from the first leg of the first end fracture guide, the first and third legs of the first end fracture guide being substantially parallel to one another and substantially perpendicular to the first end of the body; and a substantially U-shaped second end fracture guide formed in a portion of the front plate substantially adjacent the second end and surrounding the second gluing portion, the second end fracture guide includes a first leg extending from the second end of the body, a second leg aligned substantially parallel to the second end of the body and a third leg intersecting the second end of the body at a location spaced from the first leg of the second end fracture guide, the first and third legs of the second end fracture guide being substantially parallel to one another and being aligned to extend towards the side fracture guide at farther distances from the second end of the body.