| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin folding structure in which curving along a folding line is prevented when a V-shaped groove is formed on a synthetic resin sheet with a thermal creasing line and then the sheet is folded at a right angle and fixed.SOLUTION: The folding structure is formed of a laminated plate obtained by stacking and bonding three or more synthetic resin sheets. In one or more intermediate synthetic resin sheets except the synthetic resin sheets forming the top and bottom faces of the laminated plate, core member fitting portions formed of a hole or a recessed part extending along the predetermined folding line, are provided in regions having a reduced width from a predetermined folding line across the predetermined folding line formed in the laminated plate. A core member made from a rigid body is fitted to the core member fitting portion substantially with no gap therebetween. |
