| 摘要 |
<p>Strip fastener material comprises a backing 12 and lengths of polymeric monofilament 16 or 64 having cross sections defining a plurality of radially projecting lobes 17 or 66, each length including a central bight portion 18 secured in the backing, and two stem portions 20 extending from opposite ends of the bight portion and projecting away from the backing 12. Enlarged heads 22 are formed by heat at the ends of the stem portions opposite the backing, and the heads include hook-like portions 26 spaced from the stem portions and projecting along the stem portions toward the backing that result from heating the ends of the monofilaments because of their lobed cross sections. <IMAGE></p> |
