Dent profiling

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B - Operations, Transporting

21

C

B21C 37/20 (2006.01) B21D 15/10 (2006.01) B21D 15/12 (2006.01) B29C 49/00 (2006.01) B29C 49/48 (2006.01) B29C 51/10 (2006.01) B29C 53/00 (2006.01) B29C 53/22 (2006.01) B29C 53/30 (2006.01) B29C 53/56 (2006.01) B29C 53/82 (2006.01) B29C 59/02 (2006.01) B29C 59/04 (2006.01) B29C 67/00 (2006.01) F16F 1/373 (2006.01) F16F 1/376 (2006.01) F28F 3/04 (2006.01) B21D 26/02 (2006.01)

Patent

CA 2160000

Thin-walled materials are stiffened by bulging without causing material deformations typical of deep-drawing. A material web to be structured with bulges is wound in several layers around spaced apart supporting elements (2), the material web winding (1) is outwardly sealed by hydraulic means and an overpressure is applied thereto from the outside and/or a negative pressure is applied thereto from the inside. Alternatively, a material web to be structured with bulges is bent on spaced apart supporting elements (34) and an overpressure is successively applied thereto from the outside or a negative pressure is successively applied thereto from the inside, in particular segment by segment.

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