| 摘要 |
PROBLEM TO BE SOLVED: To provide a detaining piece which allows the use of various materials in filament parts. SOLUTION: This detaining piece is constituted by molding head parts 1 and cross rod parts 2 arranged apart spacings from these head parts 1 of synthetic resins, arranging filamentary bodies as the filament parts 3 between the head parts 1 and the cross rod parts 2 and integrally connecting the head parts 1 and the cross rod parts 2 via the filamentary bodies. In such a case, the filamentary bodies are yarn formed by using synthetic fibers of polyester, nylon, polypropylene, acryl, etc., for which the twisted yarn formed by twisting three pieces of the yarn of usually 200 to 300d, more preferably 250d, at 200 to 250 turns/m is used.
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