Closure membrane

Details Closure membrane Closure membrane

B - Operations, Transporting

65

D

B65D 47/20 (2006.01)

Patent

CA 2256711

The invention relates to a closure membrane (2) with a closure head (5) and a retaining border (3), the closure head being connected to the retaining border via a connecting wall (4) adjoining the outer border, with the entire arrangement being of essentially cup-shaped design, the closure head preferably being of a thickness which increases outwards from the centre. The connecting wall is attached to the closure head via a connecting web (51) which is of a lesser thickness than the border region of the closure head and which in the rest position of the membrane projects radially inwards from the connecting wall.

L'invention concerne une membrane de fermeture (2) comportant une tête de fermeture (5) et une bordure de retenue (3), la tête de fermeture étant reliée à la bordure de retenue par l'intermédiaire d'une paroi de raccordement (4) adjacente à la bordure extérieure, le système entier présentant une configuration sensiblement cupuliforme. La tête de fermeture possède de préférence une épaisseur qui augmente du centre vers l'extérieur. Cette paroi de raccordement est fixée à la tête de fermeture par l'intermédiaire d'une partie jointive (51) qui est d'une moindre épaisseur que la région marginale de la tête de fermeture et qui, en position de repos de la membrane, est en saillie radiale vers l'intérieur par rapport à la paroi de raccordement.

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