| 摘要 |
An assembly of a container and a closure. The container has a rim defining an upper sealing surface formed of a heat-sealable material, and an external screw thread extending helically along an outer surface at a location spaced below the rim. The closure includes a screw cap assembled with a separately formed disk inserted in the cap, the closure defining an internal screw thread for attaching the closure to the container when the closure is rotated in a first direction. The disk is constructed of a laminated metal having an upper metal layer and a lower heat-sealable layer affixed to an underside of the metal layer. A heat seal between the heat-sealable layer of the disk and the upper sealing surface of the rim affixes the disk to the rim such that the disk seals closed the open top end of the container. |
