COLLAPSIBLE PACKING BOX Russian patent published in 2005 - IPC

FIELD: packing equipment, particularly containers of polygonal cross-section, for instance boxes, cartons or trays formed by folding or erecting one or more blanks made of paper.

SUBSTANCE: packing box formed of cardboard or corresponding material is provided with pouring means. Box has bottom with two pairs of opposite walls and is erected from flat blank having adhesive flap secured to inner side of corresponding body wall for box body forming. Besides, the box has sealing flaps integrally formed with blank and located on each body end to create another pair of opposite body flaps, and tearing tab with gripping part for at least one pouring orifice opening. The tab is formed in adhesive flap and extends in body wall to which adhesive flap is connected over fold lines separating this body wall from sealing flap and in adjacent wall of another pair of walls formed of sealing flaps. The box has additional sealing flap located directly under corresponding closing flap in which gripping part is formed and creating adhesive flap extension. Additional sealing flap is out of connection with sealing flap having gripping part. Pair of opposite sealing flaps extending over sealing flap provided with gripping part has perforated parts to partly open gripping part.

EFFECT: prevention of box content leakage from closed box, improved ability of powder distribution from opened box.

7 cl, 7 dwg