DIAPHRAGM FOR SPEAKER

摘要

A small-sized diaphragm for a speakers exhibiting excellent acoustic performance can be obtained at low cost by mixing a cellulose-based powder, which has a particle size distribution of 5-500 µm and is imparted with affinity to non-chlorine resins through a surface treatment such as esterification, to a non-chlorine resin in such an amount that the ratio of cellulose in the mixed material is 30-70 wt%.