| 摘要 |
A method for making a curved, corrugated article from a flat sheet of material comprises the following steps: proparing the flat sheet of material, preparing a mold having a curved wavy surface arranging the flat sheet on the wavy surface of the mold, preparing a set of fixing blades above the sheet, each of the fixing blades mating with each of the bottom edges of the curved wavy surface when moved to the wavy surface and moving the set of blades toward aid wavy surface, characterized in that an end of the flat sheet is fixed to the curved end of said mold so that the sheet is curved to become concave upward and inclined up over the curved wavy surface of the mold.
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