Patent ID: 7238634
Filing Date: 2007-07-03
Classification: D01F,D04H,Y10T

Abstract:
1. A multi-layer composite sheet comprising: a first multiple component spunbond nonwoven web having a first side and a second side and comprising polymeric sheath-core substantially continuous spunbond fibers wherein the sheath component comprises a blend comprising polyethylene and between about 5 and 30 weight percent of an acid copolymer selected from the group consisting of copolymers of ethylene with methacrylic acid, copolymers of metal salts of ethylene with methacrylic acid, copolymers of metal salts of ethylene with acrylic acid, or a combination thereof, the core component comprises a polymer selected from the group consisting of polyesters and polyamides, and the weight ratio of sheath component to core component is between about 10:90 and 90:10, wherein the spunbond web is thermally bonded and has a ratio of grab tensile strength to basis weight of at least 0.66 N per g/m a sheet-like layer thermally bonded to the first side of the multiple component spunbond nonwoven web, the sheet-like layer selected from the group consisting of nonwoven webs, woven fabrics, knit fabrics, and films.