| 摘要 |
Provided is a device for preventing the inward deformation of a hollow plastic container which would normally inwardly deform after closure due to the cooling of hot liquids therein. The device comprises a membrane extending across the container spout for sealing the spout, which membrane is more flexible than the walls of the container, means for securing the membrane into sealing engagement with the spout, and means for applying the ambient pressure existing on the outside of the container to the outside of the surface of the membrane.
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