| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnet block having a high magnetic force which is prevented from loosing its shape. SOLUTION: The magnet block 11 has a three-layer structure in which thin layers 11a, 11a are provided on both sides of a center layer 11b. Since the thin layers 11a, 11a on both the sides each have a thickness (d) of 1/4 or less a width (w) at the time of molding, a pressing force can be easily propagated to an end in the width direction of a molding product. As this result, the strength of an edge is improved. Accordingly, the magnet block can be prevented from loosing its shape, and the magnet block having highly dimensional accuracy and a high magnetic force can be obtained. COPYRIGHT: (C)2005,JPO&NCIPI |
