| 摘要 |
An extruded profile of thermoplastic material has a hollow portion with an outer channel wall which is passed, in an inflated state, between heated indented rollers to form a series of longitudinally spaced coupling heads thereon, enabling a section of the profile to be used as a slide-fastener half. Another portion of the profile, remote from its deformed channel wall, may be solid and divided into a pair of parallel longitudinal flanges attachable to a stringer tape or engageable by a lateral wing of a generally flat slider; alternatively, the entire profile may be hollow upon extrusion and may thereafter be flattened, in an area remote from the channel wall to be deformed, into a substantially solid web. |
