PACKAGING BOX AND BLANK FOR PACKAGING BOX

PROBLEM TO BE SOLVED: To provide a packaging box in which a side plate can be divided vertically, and which hardly generates broken pieces in dividing, and a blank for the packaging box.SOLUTION: A packaging box 1 is equipped with a piece of breaking auxiliary work 9 on inner surfaces of a pair of side plates 5 and an inner flap 8 and includes a breaking start tab part formed on the side plate and one continuing dividing auxiliary cut 12 which intersects the breaking auxiliary work and runs an inner flap tip end direction on each of inner flap tip end parts. The packaging box is configured that one end of the dividing auxiliary cut intersecting the breaking auxiliary work is positioned on the side where the inner flap and the side plate link, and that only the other end reaches an inner flap tip end. Consequently, when the packaging box is opened by dividing, a broken piece including the breaking auxiliary work can be left in a manner to be connected to one of an upper side and a lower side of the packaging box divided into two by the dividing auxiliary cut.SELECTED DRAWING: Figure 2 【課題】側板を上下に分断可能であり、且つ分割時に破断片が生じ難い包装箱、および包装箱のブランクを提供する。【解決手段】一対の側板５および内フラップ８の内面に破断補助加工９が設けられ、その側板に形成した破断開始摘み部を有し、各内フラップ先端部に破断補助加工を横断し内フラップ先端方向に至る一繋ぎの分割補助切れ目１２を有する包装箱１であり、破断補助加工を横断する分割補助切れ目の端部の一方が内フラップと側板の連接側に位置し、もう一方の端部のみが内フラップ先端に至る構造とすることで、包装箱の分割開封時に、破断補助加工を含む破断片を分割補助切れ目によって破断片が二分割した包装箱の上側または下側の片側一方に繋がった状態で残すことができる。【選択図】図２