Packaging container blanks

Abstract

The article is a blank for a packaging container shown in the reference use state diagrams (3) and (4), and has a front part on the front side of the bottom part and a rear part on the back side of the bottom part, a front left engagement groove and a front right engagement groove on both the left and right sides of a front flap part connected to the front part, and a rear left engagement groove and a rear right engagement groove on both the left and right sides of a rear flap part connected to the back part. A cut is formed on the back side of each engagement groove. A front left protrusion is formed on the front side of the left side part and the upper left part, a front right protrusion is formed on the front side of the right side part and the upper right part, a rear left protrusion is formed on the back side of the left side part and the upper left part, and a rear right protrusion is formed on the back side of the right side part and the upper right part, and each protrusion has an engagement part with a cut formed therein and a connecting part. The connecting part connects each engagement part to the left side part or the right side part. A cut line is formed between the engagement part and the upper left part or between the engagement part and the upper right part. To assemble this article, the front, rear, right and left sides are raised up against the bottom, and then the notches of each engagement part are engaged with the notches of the engagement groove. That is, the notches of the engagement parts on the front left protruding part are engaged with the notches of the front left engagement groove, the notches of the engagement parts on the front right protruding part are engaged with the notches of the front right engagement groove, the notches of the engagement parts on the rear left protruding part are engaged with the notches of the rear left engagement groove, and the notches of the engagement parts on the rear right protruding part are engaged with the notches of the rear right engagement groove, as shown in the reference usage diagrams (1) and (2). By achieving the states shown in the reference usage diagrams (1) and (2), the packaging container is assembled in an open state, and a product can be stored inside. Then, by breaking the cut line and folding the front and rear flap portions inward together with the engaging portions on both sides as shown in the reference usage diagram (3), and further folding the upper right and upper left portions inward and inserting the insertion piece into the receiving portion, the packaging container can be closed as shown in the reference usage diagram (4).