| 摘要 |
PROBLEM TO BE SOLVED: To enhance usability of a hinge structure of the molded board with an opening/closing function such as a floor board, a rear parcel shelf, etc., by increasing the support strength of the hinge, enhancing the quality of the appearance performance and further, making both faces of the hinge foldable from the basal part thereof. SOLUTION: The molded board 10 is made of a laminate body constituted of a core material 11 and the outermost layer material 12. A hinge 20 formed linearly in the core material 11 along a folding line, and constituted of a supporting projected stripe 21, recessed grooves 22 hollowed at both sides of the stripe 21, narrow grooves 23 forming the center of the hinge formed near the supporting projected stripe 21 of the recessed groove 22. The stripe 21 can be housed in the recessed grooves 22 and it becomes possible to fold the mutual rear faces of the core material 11 by setting largely the width W of the recessed groove 22 to the thickness d of the supporting projected stripe 21.
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