Patent ID: 7585382

Claim:
A method of forming a nonwoven composite having latent elasticity, the method comprising: extruding a blend containing at least one thermoplastic elastomer and at least one single-site catalyzed semi-crystalline polyolefin having a density of from about 0.85 to about 0.88 g/cm 3 , wherein the semi-crystalline polyolefin constitutes from about 30 wt. % to about 85 wt. % of the polymer content of the blend and the thermoplastic elastomer constitutes from about 15 wt. % to about 70 wt. % of the polymer content of the blend; forming a film from the extruded blend; quenching the film; uniaxially stretching the quenched film in an at least the machine direction at a draw ratio of from about 1 .5 to about 5.0 without applying external heat; and bonding the stretched film to the nonwoven web material to form a nonwoven composite, wherein the composite exhibits a heat shrinkage of about 40% or more after being heated in water at 160° F. for 30 seconds to 1 minute.