| 摘要 |
<p>The fluidtight zip fastener (1) comprises a pair of fluidtight zip fastener carrying tapes (2, 3) carrying the zip fastener coupling member rows (4, 5) and which are in each case formed by a base tape (6) with a soft, synthetic rubber or similar covering layer (7). They engage on one another by their edge portions (9). The pair of continuous coupling member rows (4, 5) is sewn to the zip fastener carrying tapes (2, 3) in a spaced offset position transversely to the longitudinal edges of said carrying tapes (2, 3) in such a way that the press-contact edge portions (9) of the soft covering layers (7) are in contact with one another along a longitudinal plane, which intersects the zip fastener at a central axis thereof and runs at right angles to the zip fastener principal plane. The press-contact edge portions (9) project over said longitudinal plane, when the coupling member rows (4, 5) are disengaged. The edge portions (9), when the coupling member rows (4, 5) are engaged, are bent away from the side carrying the coupling member rows (4, 5) so as to extend roughly at right angles to the zip fastener principal plane. The soft covering layers (7) of the press-contact edge portions (9) engage on one another under pressure action when the zip fastener (1) is closed and thus ensure the fluidtightness condition. <IMAGE></p> |
