Patent ID: 6286699
Filing Date: 2001-09-11
Classification: B65D

Abstract:
An apparatus comprising a container and a stopper for the container, wherein the stopper is a laminated rubber stopper comprising a top part having a flange part, a leg part having a base, provided under the top part, insertable into a mouth part of the container, and a neck part which is a boundary between the flange part and the leg part, at least a surface of the stopper to be contacted with contents in the container being laminated with a fluoro resin film, in which the lower surface of the flange part has an annular concavity with a cross section of an arc from the periphery of the flange part to the neck part, the lower surface of the flange part is laminated with a fluoro resin film, and the mouth part of the container has a flange part with a flat surface; wherein the stopper, apart from the container, exhibits said annular concavity in the lower surface of the flange part, wherein when said stopper is completely engaged into the mouth of the container the material of the stopper maintains a shape without the application of an external force such that said annular concavity is not exhibited.