| 摘要 |
PROBLEM TO BE SOLVED: To provide a container cover which is excellent in throating and prevents a lubricant from transferring into the liquid in the container, by forming at least the extraction opening with plastics including a lubricant and forming at least the top plate part and the inside cylindrical part with plastics without any lubricant. SOLUTION: The lower part body of this container cover body 1 is formed of plastics without any lubricant and the extraction opening 6 is formed of plastics including a lubricant. The extraction opening 6 having a function as a guide for the liquid in the container is formed of plastics including a lubricant and hence, it is excellent in throating. And the extraction opening 6 made from plastics including a lubricant is formed at a position completely isolated from the liquid in the container and further, the members such as the top plate part 10 and the inside cylindrical part 11 which are always under contact with the liquid are made from plastics without any lubricant. And hence, the lubricant does not easily transfer to the liquid during preservation thereof. |
