| 摘要 |
A zip fastener construction is provided with a stiffening or holding core member extending longitudinally through a row of interlocking elements in the form of a spring coil, said core being securely retained in place against displacement particularly in the transverse direction. The coil element is provided with a space between its arm portions, which space is reduced immediately adjacent the core to hold the latter in abutting engagement with the inner wall of a base portion of the element. |
