TUBE HEAD EQUIPPED WITH A LID, ASSOCIATED WITH AN IMPROVED PERFORATING CAP WHICH ENSURES PROTECTION OF THE LID PRIOR TO FIRST USE THEREOF

摘要

A tube head assembly includes a tube head that includes a solid insert forming a lid closing the neck, a cap that includes a punch, and a removable spacing ring disposed against the shoulder around the neck. The ring and the cap are formed integrally in one piece and are joined by material bridges and configured in such a way as to allow sliding of the cap through the ring after breakage of the material bridges, characterised in that the ring includes internal stops adapted to limit the movement of the cap through the ring in such a way as to keep the punch spaced from the lid when the cap is screwed onto the neck and butts against the ring.

主权项

1. A tube head assembly comprising:
a tube head comprising a neck defining a longitudinal axis, a shoulder and a solid insert forming a lid closing the neck, a cap comprising a punch adapted in order to cut the lid, said cap being adapted to be screwed onto said neck, and configured in such a way that when said cap is screwed onto the neck the punch is inserted into the interior of the neck, a removable spacing ring disposed bearing against the shoulder around the neck, the ring and the cap being formed integrally in one piece and joined by material bridges, said ring having an internal diameter greater than an external diameter of said cap, so as to enable the cap to slide through the ring after breakage of said material bridges, characterised in that the ring comprises internal stops adapted to limit the movement of said cap through the ring in such a way as to keep the punch spaced from the lid when the cap is screwed onto the neck and butted against the ring.