| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal foil molding easy folded width-directionally while shortening a longitudinal-directional length. SOLUTION: The first folding line 48 and the third folding line 50 are formed width-directionally from the first point A, and the seventh folding line 54 is formed longitudinal-directionally. The second folding line 49 and the fourth folding line 51 are formed width-directionally with respect to the second point B, and the 8th folding line 55 is formed longitudinal-directionally. The fifth folding line 52 and the sixth folding line 53 are formed width-directionally in an apex point C, and the 9th folding line 56 and the 10th folding line 57 are formed between the first point A and the second point B. A protrusion part 47 protruded to a surface side is formed in a portion of an isosceles triangle ABC by press molding. Rigidity of the protrusion part 47 is thereby enhanced to make a rear flap 21 easily folded. COPYRIGHT: (C)2006,JPO&NCIPI
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