| 摘要 |
PURPOSE:To improve resistance against impact and efficiently prevent leakage by a method wherein a reinforced part is formed so that it is tightly attached by crushing of a rim of an opening and an inner or an outer wall of a top and a closure protruding downward of the periphery of an opening and a closure engaging part which is able to be in planer contact with the closure are formed. CONSTITUTION:A container port 2A comprises a cylindrical body 3 having an engaging groove 13 Which has been subjected to punching and drawing, a top 4 and an opening 5, while a book-like part 8 to be brought in tight contact doubly is formed by crushing a rim 6 of the opening 5 and an inner wall of the top 4, whereby a reinforced part 7A of the top 4 and a closure engaging part 14 to be in planer contact with a side wall 16 of a closure 15 are formed. A lid 9 is mounted on the container port 2A with a tip of an elastic hook piece 11 engaged with the engaging groove 13. At this time, the closure 15 incorporated in the lid 9 is in planer contact with the closure engaging part 14 with its side wall 16 of a closure body 19 to have the opening 5 tightly sealed While a seal piece 21 provides sufficient sealing with being in tight contact with the top 4 and an upper surface near the top. In addition, the reinforcing part 7A increases in its thickness by crushing, thereby increasing its strength. |
