| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of accurately and efficiently manufacturing even a small-sized magnet or a thin-walled magnet, and an injection mold used therein. SOLUTION: A resin magnet composition is injected in a cylindrical cavity 13 from a hot runner 15 equipped with a freely slidable pin 16 for opening and closing a gate 14. At the time of closing of the gate 14, the tip 16a of the pin 16 is inserted in the gate 14 so as to come into contact with the outer periphery of the molded article in the cavity 13.
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