Patent ID: 7737061

Claim:
A laminate comprising at least one elastic or inelastic fabric, and an elastic film layer comprising at least one ethylene/α-olefin interpolymer, wherein the ethylene/α-olefin interpolymer is a block copolymer comprising at least 50 mole percent ethylene: (a) has a M w /M n from about 1.7 to about 3.5, at least one melting point, T m , in degrees Celsius, and a density, d, in grams/cubic centimeter, wherein the numerical values of T m and d correspond to the relationship: T m ≦−2002.9+4538.5( d )−22422.2( d ) 2 ; or (b) has a M w /M n from about 1.7 to about 3.5, and is characterized by a heat of fusion, AH in J/g, and a delta quantity, ΔT, in degrees Celsius defined as the temperature difference between the tallest DSC peak and the tallest CRYSTAF peak, wherein the numerical values of ΔT and ΔH have the following relationships: Δ T>− 0.1299(Δ H )+62.81 for ΔH greater than zero and up to 130 J/g, ΔT≧48° C. for ΔH greater than 130 J/g, wherein the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer has an identifiable CRYSTAF peak, then the CRYSTAF temperature is 30° C.; or (c) is characterized by an elastic recovery, Re, in percent at 300 percent strain and 1 cycle measured with a compression-molded film of the ethylene/Q-olefin interpolymer, and has a density, d, in grams/cubic centimeter, wherein the numerical values of Re and d satisfy the following relationship when ethylene/Q-olefin interpolymer is substantially free of a cross-linked phase: Re> 1481−1629( d ); or (d) has a molecular fraction which elutes between 40° C. and 130° C. when fractionated using TREF, characterized in that the fraction has a molar comonomer content of at least 5 percent higher than that of a comparable random ethylene interpolymer fraction eluting between the same temperatures, wherein said comparable random ethylene interpolymer has the same comonomer(s) and has a melt index, density, and molar comonomer content (based on the whole polymer) within 10 percent of that of the ethylene/α-olefin interpolymer; or (e) has a storage modulus at 25° C., G′(25° C.), and a storage modulus at 100° C., G′(100° C.), wherein the ratio of G′(25° C.) to G′(100° C.) is in the range of about 1:1 to about 9:1; wherein the ethylene/Q-olefin interpolymer has a density of from about 0.85 to about 0.89 g/cc and a melt index (I 2 ) of from about 0.5 g/10 min, to about 10 g/10 mm and wherein the film layer has a stress relaxation of at most about 60% at 75% strain at 100° F. for at least 10 hours.