Patent ID: 6039145
Filing Date: 2000-03-21
Classification: H04R

Abstract:
A diaphragm for speakers which comprises a self-supporting, shaped body including a tightly woven synthetic polymer fiber cloth substrate which has, at least, a diaphragm portion and an edge portion shaped integrally with and extending from said diaphragm portion wherein said diaphragm portion and said edge portion have a thermoplastic polymer resin at least partially impregnated thereto in different amounts, respectively, so that said edge portion is lower in stiffness than said diaphragm portion, said thermoplastic resin is present in said edge portion in an amount of 5 to 20 g/m.sup.2 and in said diaphragm portion in an amount of 15 to 50 g/m.sup.2 provided that said edge portion has a resin content less than said diaphragm portion.