| 摘要 |
PURPOSE:To obtain a bobbin excellent in light-weightiness, accuracy and rigidity by fixing the bobbin with an adhesive after winding a string material around a jig. CONSTITUTION:The string material 2 of such as glass fiber, alumina fiber, cabon fiber, etc., which are non-organic fibers or of aromatic polyamide, or others which are organic, is closely wound around the winding jig 1 in spiral form, thereafter, the entire bobbin is fixed with the adhesive. As a result, a voice coil bobbin 3 excellent in light-weight, rigidity, heat 1 resistance, and water-proof which has highly accuracy in dimension can be produced.
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