| 摘要 |
PROBLEM TO BE SOLVED: To prevent occurrence of failure, such as cracks in a parting line and to reduce the manufacturing cost, when manufacturing edges for loudspeaker by means of an insert molding by setting a base material in an edge molding member. SOLUTION: A metallic mold 303 for edge molding includes at least a male mold 303A and a female mold 303B and is provided with an annular cavity 3030, corresponding to the shape of an edge 12 for loudspeaker inside the metallic mold 303 in a mold closed state. A dividing line is formed from a dividing plane of the male mold 303A and the female mold 303B, along the circumferential direction and at substantially the center of outer peripheral side surface within the annular cavity 3030. The base material 121B is then set in the metallic mold 303, the metallic mold 303 is filled with an edge-molding material 102A', before or after this step, and the base material 121B and the edge molding material 121A are heated and pressurized in the metallic mold 303. Here, an external end portion of the base material 121B is disposed, at a position separated from the vicinity of the dividing line of the metallic mold 303 by a specified distance. COPYRIGHT: (C)2007,JPO&INPIT
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