PACKING BOX

FIELD: packing. ^ SUBSTANCE: proposed packing box formed from common sheet blank by folding separate members by folding longitudinal and cross lines marked on face of blank has bottom, two side walls, two end face walls and four corner limiting projections. Side walls are furnished with foldable longitudinal extensions limited by cross folding lines and serving as fragments for forming end face walls. End face walls are furnished with cross flaps with fixing projections limited by cross folding lines and mating with corresponding holes in bottom at folding. Foldable extensions have double cross folding lines dividing foldable extension into root and end parts. End face walls are provided with slot-like ports to drive in end parts of foldable extensions bent along double cross folding lines and are separated from cross flaps by double cross folding lines so that end face walls in folded state have inner space for accommodating end parts of pair of foldable extensions bent relatively opposite after driving into slot-like ports. ^ EFFECT: creation of packing box of increased carrying capacity of vertical loading, enlarged possibility of piling of such boxes with provision of higher mechanical reliability. ^ 9 cl, 17 dwg