Containers

B - Operations – Transporting – 08 – B

Patent

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Details

B08B 15/00 (2006.01) B21D 51/26 (2006.01) B65D 1/44 (2006.01)

Patent

CA 2178092

A metal container has a bottom wall (2) and side wall (6) provided with a low relief pattern of shallow grooves (12) or creases to define outwardly convex panels (13). The grooves or creases have a depth between 0.3 and 3 % of the radius of the side wall which has a thickness between 3 and 30 % of the radius of grooves. A method and apparatus are described in which the pattern of grooves and panels is formed progressively by a pinch pressure imposed by a mandrel (30) inside the container body and an arcuate rail (24) provided with teeth (33) to define the grooves. Preferably the pinch pressure sets the cross-sectional shape of the groove pulling the panels to shape by elastic deformation.

Un récipient métallique présente un fond (2) ainsi qu'une paroi latérale (6) pourvue d'un dessin à faible relief de gorges (12) ou de sillons creux, afin de déterminer des panneaux convexes (13) saillant vers l'extérieur. Ces gorges ou ces sillons ont une profondeur comprise entre 0,3 et 3 % du rayon de la paroi latérale, laquelle a une épaisseur comprise entre 3 et 30 % du rayon des gorges. L'invention concerne un procédé ainsi qu'un appareil permettant de former progressivement le dessin des gorges et des panneaux en appliquant une pression de pinçage à l'aide d'un mandrin (30) situé à l'intérieur du corps du récipient, et d'un rail courbe (24) doté de dents (33) afin de former les gorges. De préférence, la pression de pinçage détermine la configuration de la section de la gorge en étirant les panneaux par déformation élastique afin de les façonner.

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Profile ID: LFCA-PAI-O-2014683

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