| 摘要 |
PURPOSE: To provide a hermetic stopper whose sealability does not decline even after hot packing. CONSTITUTION: The upper end of a circular wall 31 placed in tight contact with the inner circular surface of the mouth 1 of a container meets the circular end of the top side 33 and from the upper end of the circular wall, 31 a peripheral flange 32 which is seated on the upper surface of the mouth 1 of the container is formed outward. Reinforcing ribs (r) for preventing deformation are provided in the part where the circular wall 31 and the top side 33 join. |
