| 摘要 |
PURPOSE:To provide a sealing cap capable of being closed by a strong tightening force and excellent in barrier property and design. CONSTITUTION:The cap comprises a metal member 2 consisting of a stepped part 22 provided around the outer periphery of the top face 21 of the cap and a vertical part 23 extending downwardly from the end of the stepped part 22 to a length greater than the height of the stepped part 22 raised from the top face 21 of the cap, a sealing material 3 provided in a groove defined between the stepped part 22 and the top face of the cap around the outer periphery of the cap and a thermoplastic resin 4 formed integrally with the metal member 2 and having the vertical part 23 enclosed between the inner and outer resin coverings, the outer resin covering extending to at least the outer peripheral edge of the stepped part 22 and an inwardly projecting part 41 formed on the inner resin covering for engagement with an outwardly projecting part 51a of a bottle neck 51. The projection 41 is preferably located on the inner resin covering above the lower end of the vertical part 23. Since the side wall of the cap is highly rigid, a bottle 5 can be capped by a strong tightening force. The metal member 2 provides a barrier property and the top face of the cap can also be printed. |
