| CPC B65D 17/4012 (2018.01) [B65D 17/4011 (2018.01); B65D 17/404 (2018.01); B65D 2517/0016 (2013.01)] | 19 Claims |

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1. A lid for a metal container able to contain a substance, comprising:
a closing cap defined by at least one incision line, able to allow the closing cap to be lifted and at least partly torn,
an opening lever disposed astride the incision line and comprising a front fulcrum end and an intermediate region provided with a flexible tongue attached to the closing cap,
a mechanical connection located in proximity to the incision line, configured to mechanically attach the flexible tongue to the closing cap and configured to cooperate with said flexible tongue,
said incision line having at the front, in the zone where the closing cap starts to be lifted and torn, a portion protruding outward, toward the front fulcrum end of the opening lever,
wherein said protruding portion has, on both sides, segments of the incision line which move away from said mechanical connection as far as respective deformation zones, caused by compression of the incision line; and
wherein said deformation zone caused by compression comprises at least a first curvature having a concavity facing toward the outside of the lid and at least a second curvature having a concavity facing toward the inside of the lid, and further wherein the succession of said first and second curvature defines said transition and modification in the opening direction of the incision line.
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