Patent ID: 6988584

Claim:
A method of forming an edge of a speaker diaphragm comprising: providing a plurality of successively disposed sections; a first forming step of forming, in a first of said plurality of process sections, a resin-treated base fabric from a base fabric by applying a silkscreen printing technique for depositing a shaping agent layer to a necessary portion of said base fabric; a second forming step of forming, in a second of said plurality of process sections, a surface coating agent layer on said base fabric for improving physical functionality of said diaphragm edge; hot-forming said base fabric into a desired edge shape; a third forming step of forming, in a third of said plurality of process sections, a hot-melt adhesive layer on said base fabric onto an area of bonding between said diaphragm and a frame; and said first, second and third forming steps each separately heating said shaping agent layer, said coating agent layer and said hot-melt adhesive layer, respectively.