| 摘要 |
PURPOSE: To provide a closure unit which can seal again after opening the seal as well as can simplify a molding mold by reducing the working processes for production and assembly. CONSTITUTION: This closure unit made of thermoplastic materials comprises a pouring part 11 and a lid part 12 which closes the opening of the pouring part 11. The thermoplastic material consists of a base material and an auxiliary material of mutually different characteristics, and the lid part 12 and the pouring part 11 are closely and at least partially reversibly connected with each other by a pair of sealing faces and a molded linking means. A pair of sealing faces consist of a sealing face of the base material A and a sealing face of the auxiliary material B. The part between the pouring part 11 and the lid part 12 is closely sealed by the sealing faces, and repeated opening and closing of the lid part are possible by the mold linking means. |
