| 摘要 |
PROBLEM TO BE SOLVED: To prevent a toxic gas from being generated at the time of incineration, and effectively utilize a raw material by a method wherein a back plate body is formed by bending side plates which are made of corrugated fiberboard as the raw material, and extended from both sides of the back plate to the front surface, and by bonding a U-shaped laminated body on the top and the bottom of the side plate, the side plates are prevented from returning to the original state even when being opened, and on the back surface of the back plate, a back flat laminated body is bonded. SOLUTION: Side plates 2 which are extended from both sides of a back plate 1 with a folding line, are bent at a right angle to the front surface direction, and on the front surface edge of the side plate 2, a bending reinforcing piece 3 is provided with a folding line, and the bending reinforcing piece 3 is opened to the outside, and the vertical dimension of the back plate 1 is made shorter than the side plate 2, and the vertical dimension of the back plate 1 is made shorter, and a material for a back flat laminated body 6 which is affixed to the back surface of the back plate 1 can be reduced, and under a state wherein the side plate 2 is bent and projected to the front surface, to the top and the bottom of the side plate 2, a U-shaped laminated body 5 is respectively bonded and attached under a covering state. Since the raw material is corrugated fiberboard for which recycled paper is used, there is no problem at the time of incineration, and since a rib plate body is made an aggregate, and the U-shaped laminated body and the back flat laminated body are bonded, the amount of the back plate laminated body can be reduced, and by bending the bending reinforcing piece, the side plate 2 can be reinforced. |
