Process for making plastic closures and closure

Details Process for making plastic closures and closure Process for making plastic closures and closure

B - Operations, Transporting

65

D

B65D 41/34 (2006.01) B29C 43/32 (2006.01) B29C 45/00 (2006.01)

Patent

CA 2653455

A process for realizing plastic capsules (1) comprises: a first forming stage for realizing a cap (2) having an internal annular projection (2a) arranged in proximity of an open lower zone of the cap (2); a second forming stage of an annular element (3), provided with a security element (4) and with an external annular projection (3a) for inserting, during an assembly stage of the cap (2) with the annular element (3), over the internal annular projection of the cap (2). A stage of mechanical working is performed on the cap (2), for realizing, on an internal wall of the cap (2) and in proximity of a lower zone thereof, an annular incision (2b) which does not pass entirely through the cap (2) and which receives at least a part of the external annular projection (3a)

La présente invention concerne un procédé de réalisation de capsules en plastique (1) comprenant: une première étape de formation pour réaliser un bouchon (2)ayant un saillie annulaire interne (2a) disposé à proximité d'une zone inférieure ouverte du bouchon (2); une seconde étape de formation d'un élément annulaire (3), muni d'un élément de sécurité (4) et ayant une saillie annulaire externe (3a) pour l'insertion, lors de l'étape d'assemblage du bouchon (2) avec l'élément annulaire (3), sur la saillie annulaire interne du bouchon (2). Le bouchon est soumis à une étape de travail mécanique pour réaliser, sur une paroi intérieure du bouchon (2) et à proximité d'une zone inférieure de celui-ci, une incision annulaire (2b) qui ne traverse pas entièrement le bouchon (2) et qui reçoit au moins une partie de la saillie annulaire externe (3a).

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