| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject sinker miniaturized with reduced volume and affording a specific gravity greater than that of lead optimum as a sinker by molding to a specified specific gravity a composition mainly comprising tungsten (alloy) and a thermosetting resin. SOLUTION: This sinker is obtained by molding to a specific gravity of 11-17 a composition mainly comprising pref. 20-35 vol.% of a thermosetting resin and tungsten or its alloy (pref. W-Ni-Cu-based alloy, W-Ni-Fe-based alloy, or the like; specifically, W-6Ni-4Cu, W-3Ni-2Cu, W-1.8Ni-1.2Cu, W-4.9Ni-2.1Fe, W-3.5Ni-1.5Fe, or the like). This sinker is attached to the tip of the line of a fishing tackle.
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