| 摘要 |
A die (1) for molding a cuff on a plastic tube, comprising an upper shell (2) and a lower shell (3) defining a molding cavity (4) between them; each of said shells (2, 3) has an external structure (6) and an internal wall (7) for defining a half of the molding cavity (4) and for defining a hollow space (8) with the external structure (6). The molding cavity (4) and hollow spaces (8) are separated from each other by internal walls (7). The die comprises openings (9, 10) which are connected with the molding cavity (4) and the hollow spaces (8) respectively
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