Speaker cone and process for production thereof

摘要

A speaker cone comprising a sheet (A) comprised of acrylic synthetic fibers, or a laminate of a sheet (A) and a sheet (B) comprised of the other fibers, in the shape of a cone, wherein the sheet (A) being comprised of acrylic synthetic fibers having a large number of long and narrow voids extending internally along the longitudinal direction, the voids have a nonspecific lateral cross-sectional shapes, the majority of the fibers present at the surface of the sheet (A) is divided into fine fibers, a large amount of undivided acrylic synthetic fibers are present in the inside of the sheet (A), and these fibers are made integral through mutual entanglement, and at least one of the surfaces of the cone shaped article has fused portions of the fibers.