| 摘要 |
PROBLEM TO BE SOLVED: To provide a box type molded article restricted by neither the use of a special material nor a complicated mold structure and structured to cause camber in the height direction of a side face so that the upper end of the side face is formed in desired shape even with the occurrence of falling deformation of the side face or suppressing the falling deformation of the side face. SOLUTION: The box type molded article has a bottom face 2 and the side face 3 and is made by hot forming, wherein, when the height of the side face 3 is set to L [mm] and an angle change portion of an angle defined by the bottom face 2 and the side face 3 when cooled to a room temperature from the temperature of hot forming is set toΔθ[rad], the curvatureκ[1/mm] in the height direction of the side face after cooled is in a range of 0<κ<4Δθ/L. COPYRIGHT: (C)2011,JPO&INPIT
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