CORRUGATED SHEET MANUFACTURING METHOD AND CORRUGATED SHEET

摘要

PROBLEM TO BE SOLVED: To provide a corrugated sheet that is excellent in safety during construction work.SOLUTION: A long net-like sheet 20 having mesh parts is wound on an outer periphery of a first tooth roll 31 and then bitten between the first tooth roll and a second tooth roll 32 to form a mountain-folded portion 11 and a valley-folded portion 12 to obtain a corrugated sheet 10. Both tooth rolls are bent at their mountain portions and corresponding valley portions and rolled to expand the area of penetration portions 21 of mountain-folded portions and valley-folded portions of the formed corrugated sheet. The corrugated sheet wound on an outer periphery of the second tooth roll is peeled off by a peeling claw 34 whose tip is inserted into a roll circumferential groove 32a provided on the outer periphery of the second tooth roll so as to orbit in a vertical plane with respect to the axial direction, and the mountain-folded portion is pressed to the side opposite to the traveling direction to form an overhanging portion 13 at a part in the width direction of the mountain-folded portion.SELECTED DRAWING: Figure 1