| 摘要 |
A container (10) and plastic closure (12). The container (10) is formed by a receptacle (14) having a plastic collar (16) which defines an opening (18) for the container. The plastic collar (16) is fixed to the receptacle (14) by a free edge (24) of a rim formation (22) engaging an undercut (30) in the plastic collar (16). The receptacle is preferably metal and its free edge is a raw edge of the metal. The plastic closure (12) and the plastic collar (16) include complementary structures to seal one to the other, for example to provide bayonet-type (56-68), screw threaded or bead-in-groove snap-fit couplings. The plastic of the collar (16) is soft relative to that of the closure (12) to allow ease of removal of the closure whilst meeting stackability (due to a hard plastic closure) and sealability (due to a hard to soft plastics interconnection) requirements.
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