To provide a tape pulling and tightening a pull string passed through the tape sewn in the topmost part of a curtain with light force and simply forming pleats of the curtain with a good appearance.
The woven fabric tape is obtained as follows. The tape is prepared by using multifilament yarns as warp yarns in the tape longitudinal direction and core-sheath conjugated filament yarns of a double structure made of a high-melting material in a core part and a low-melting component in a sheath part as weft yarns in the width direction into the tape form and the tunnel-like part extending in the longitudinal direction is composed of excessively densified warp yarns. The pull string is regularly passed through the part and heating processing is carried out at a desired temperature.
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