| 摘要 |
A container lid for use with a container with a neck. The lid includes a top and bottom, a skirt extending downward from the circumference of the lid, and a circumferential flange extending radially outward from the lid. The skirt preferably includes at least one integral bead shaped to engage the neck or rim of the container. The lid preferably includes a convex center section including at least one vent. The at least one vent is preferably integral with the lid, and is opened by the steam pressure buildup inside the container when the contents are heated. When the cover is locked on the container, the skirt provides a seal against the outside of the container neck.
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