| 摘要 |
In a concealed slide fastener in which coupling elements 11, 13, 15 are injection moulded on the edge 25, 27 of a tape 17, 19 , a coupling portion 53 of a coupling element is provided on one side of the tape 17, 19 and a shelf 47 of the coupling element on the other side of the tape 17, 19 . A coupling portion 53 bears on the shelf 47 of the opposed coupling element with the respective tape 17, 19 sandwiched between them, to limit out of plane separation of the coupling elements. The coupling portion 53 can be made the full thickness of the coupling portion on one side of the tape without the need to provide any recess or undercut in the coupling head 43 and the coupling element can be moulded using a two part mould. |
