| 摘要 |
PROBLEM TO BE SOLVED: To provide a packing box which can reduce repulsive force of a folded cardboard, and can suppress a decrease in a capacity.SOLUTION: A packing box includes a cylindrical body part 10 having side walls 11 and end walls 12, and flap parts 20. The flap part 20 includes a pair of outer flaps 21 connected to both of the side walls 11, and a pair of inner flaps 22 connected to both of the end walls 12. The inner flap 22 includes an inner flap center part 24 connected to the end wall 12, and a pair of inner flap end parts 25, 25 connected between the inner flap center part 24 and the outer flap 21. The inner flap center part 24 and the inner flap end part 25 are partitioned by a pair of first boundary (an inclined line 4) extending to a tip end side by forming an angle of 45 degrees between both end parts of a base end edge (a horizontal line 3b) of the inner flap 22 as a connection part of the end wall 12 and the inner flap 22. The inner flap center part 24 or the inner flap end part 25 is compressed. |
