| 摘要 |
PROBLEM TO BE SOLVED: To provide a speaker diaphragm capable of having high flexure rigidity and a speaker device including the same.SOLUTION: The speaker diaphragm includes a fiber entangled body formed of a plurality of fibers to which a polyester resin having a lactic acid unit represented by the formula (1) below is adhered to a main chain. -CO-CH(CH)-O- ... (1)SELECTED DRAWING: None |
