Patent ID: 8841386
Filing Date: 2014-09-23
Classification: C08F,C08L,D01F,D04H,Y10T

Abstract:
1. A method for forming a nonwoven web, the method comprising: supplying at least one aromatic polyester to a melt processing device; and modifying the aromatic polyester with at least one polyether copolymer within the device to form a thermoplastic composition having a melt flow rate that is greater than the melt flow rate of the aromatic polyester, wherein the polyether copolymer contains a repeating unit (A) having the following formula: wherein, x is an integer, the polyether copolymer further containing a repeating unit (B) having the following formula: wherein, n is an integer; and y is an integer; extruding the thermoplastic composition to form fibers; and randomly depositing the fibers onto a surface to form the nonwoven web, wherein the repeating unit (A) has a number average molecular weight ranging from about 500 to about 10,000 and the repeating unit (B) has a number average molecular weight ranging from about 100 to about 2000.