| 摘要 |
PURPOSE:To make bonding of a foil form filler and a sponge-form metal body firm by molding the laminate composed of the foil-form filler and sponge-form metal body to the shape of a speaker diaphragm through making use of the pressure difference of fluid and at the same time allowing the foil-form filler to enter the open cells of the sponge-form metal. |
