| 摘要 |
The invention relates to a method and an apparatus for creating fold lines in corrugated sheet transversely of the corrugations for enabling in a subsequent step bending of the sheet to a desired angle. According to the method the sheet (4) is fixed between two locking means (5, 6) arranged on a die (2) in an edging press or similar and by means of a pressbar (1) a fold line in the form of indents in the crests of the corrugations is created. |
