An assembly comprising a wide-mouth plastic preform or container having a reinforced neck finish and a screwable closure

摘要

The assembly comprises a container (1) and a removable closure (2) that can be screwed onto the plastic container. Said plastic preform container (1) comprises a hollow body (11) and a neck finish (10) terminated by a wide-mouth opening (100). Said neck finish comprises a neck support ring (102) and a neck portion (101) extending between the wide-mouth opening (100) and the neck support ring (102). The neck portion (101) is provided with a thread (12) for screwing the removable closure onto the neck portion (101), and comprises an upper portion (1010) and a reinforced lower portion (1011). The inner face (1011 b) of the reinforced lower portion (1011) is transitioning to the inner face (1010b) of the upper portion (1010) along a transition step (1011 c) in such a way that said reinforced lower portion (1011) is thicker than the upper portion (1010) at least in a top part of the reinforced lower portion (1011). The removable closure (2) comprises a deformable sealing material (20) and once the removable closure is being screwed onto the neck finish of the container (1), the upper portion (1010) of the neck portion (101) is in contact with the deformable sealing material (20) and a seal is achieved only between this upper portion (1010) of the neck portion (101) and the removable closure (2).