Patent ID: 7919419

Claim:
A high strength multistrata nonwoven wipe material comprising: (A) from about 45 to about 95 weight percent matrix fibers selected from the group consisting of cellulosic fibers, synthetic fibers, and a mixture of cellulosic fibers and synthetic fibers; (B) from about 5 to about 55 weight percent bicomponent fiber, wherein the bicomponent fiber has a length of from about 3 mm to about 36 mm; and (C) optionally, from 0 to about 15 weight percent binder, wherein the weight percentages are based on the total weight of the material, and wherein the material has (D) a basis weight of from about 40 gsm to about 100 gsm, (E) a density of from about 0.03 to about 0.15 g/cc, and (F) a CDW tensile strength of about 252 g/cm or greater, and wherein the material comprises two or more strata, and has at least one stratum comprising from about 60 weight percent to about 100 weight percent bicomponent fibers, and wherein the composition of any one stratum is different from at least one adjacent stratum, and wherein the material has two outer strata and one or more inner strata and the weight percent bicomponent fiber of one inner stratum is from about 70 weight percent to about 100 weight percent bicomponent fiber based on the total weight of the one inner stratum.