| 摘要 |
PURPOSE:To attain thin forming and light weight, by using a denatured polypropylene obtained with polypropylene reacted with unsaturated carboxylic acid so as to form a speaker diaphragm. CONSTITUTION:The speaker diaphragm is formed by using a denatured polypropylene obtained from the polypropylene reacted with the unsaturated carboxylic acid. Thus, the fluidity and the drawing performance at forming are excellent, the thin forming is attained, resulting in obtaining light weight. Further, the diaphragm excellent in the bonding performance with edges and a voice coil is formed. |
