| 摘要 |
PROBLEM TO BE SOLVED: To certainly bend a blank of corrugated cardboard such as a partition or the like along a ruled line without tearing the blank while preventing the ruled line from disappearing by a hot press. SOLUTION: The blank 1 of the corrugated cardboard is molded by the hot press not only to raise a plurality of rows of partition plates 3 in a lateral direction from a bottom board 2 but also to form a plurality of ruled lines 4 to the regions between the rows of the partition plates 3 by the hot press. The blank 1 is bent into a wavy form along the ruled lines 4 to form partition walls 5 in a longitudinal direction. Since the ruled lines 4 are formed by the hot press not at punching but at molding, the blank 1 can be certainly bent along the ruled lines 4 without breaking the fibers of paper even if the ruled lines 4 are formed deeply and the tearing of the corrugated cardboard accompanied by bending is prevented. Further, the ruled lines 4 do not disappear by molding. COPYRIGHT: (C)2005,JPO&NCIPI
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