Cap for a container

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 51/20 (2006.01) B65D 41/04 (2006.01)

Patent

CA 2249302

The cap is especially useful for sealing a coffee jar and includes a sealing membrane (25) having a surface provided with adhesive for adhesion across the mouth of a jar when the cap is screwed down on the jar. The membrane (25) is held between a circumferential ring (17) on the cap skirt (12) and an end portion (23) of an annular sealing member (20), the end portion (23) being in a radial plane of the skirt. The member (20) resiliently engages the rim of the jar for resealing after the membrane is broken. The need for a weak adhesive to adhere the membrane in the cap is avoided.

Le couvercle d'obturation selon l'invention, qui est particulièrement utile pour fermer hermétiquement un bocal à café, comprend une membrane d'étanchéité (25) dont une face porte un adhésif lui permettant d'adhérer à toute l'embouchure d'un bocal lorsque ledit couvercle est vissé sur celui-ci. La membrane (25) est maintenue entre un anneau circulaire (17) situé sur la jupe du couvercle (12) et une partie d'extrémité (23) d'un élément d'étanchéité annulaire (20), cette partie d'extrémité (23) se trouvant sur un plan radial à la jupe. L'élément d'étanchéité annulaire (20) entre en contact élastique avec le rebord du bocal afin de refermer celui-ci hermétiquement après que la membrane a été rompue. Il n'est plus, de la sorte, nécessaire d'utiliser un adhésif léger pour faire adhérer la membrane au couvercle.

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