| 摘要 |
PROBLEM TO BE SOLVED: To provide a smoking ring not leaking the lines of magnetic force outside the ring, capable of increasing the lines of magnetic force crossing a cigarette, and not affecting a magnetic card, etc. SOLUTION: This smoking ring comprises a plastic magnet ring produced by pulverizing a magnet such as a ferrite magnet or a rare earth element magnet (for example, a samarium-cobalt magnet or a neodymium magnet), mixing the obtained magnet powder with a plastic, and then molding the mixture. An N-magnetic pole 2 and an S-magnetic pole 3 are formed on the inner circumferential surface of the smoking ring 1.
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