| 摘要 |
To provide a gear which hardly peels off on a joined boundary face even where a polyamide resin-molded gear core is joined to a polyamide resin-molded gear tooth, and is excellent in dimensional accuracy. In the gear, the polyamide resin-molded gear tooth 12 is joined in an integrated form on the outer circumference of the gear core 11 having at least the circumferential part molded with a polyamide resin after a joining auxiliary agent including phenol compounds as (A) ingredients and organic solvents as (B) ingredients capable of dissolving or dispersing (A) ingredients is coated on the outer circumference of the gear core 11 or on the inner circumference of the gear tooth 12.
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