Patent ID: 6465378
Filing Date: 2002-10-15
Classification: B32B,D04H,Y10T

Abstract:
A nonwoven fabric laminate comprising a nonwoven fabric comprised of fibrous material in the form of continuous filaments or staple fibers of a size less than 15 dtex/filament randomly arranged and bonded to one another at discrete locations, said fibrous material being formed of a dispersed blend of at least two different polyolefin polymers, said polymers being present as a lower-melting dominant continuous phase and at least one higher-melting noncontinuous phase dispersed therein, said lower-melting continuous phase forming at least 70 percent by weight of said fibrous material and comprising a linear low density polyethylene polymer of a melt index of greater than 10 g/10 min. and a density of less than or about 0.945 g/cc and said at least one higher-melting noncontinuous phase comprising a polypropylene polymer with melt flow rate of greater than 20 g/10 min.; and at least one other web bonded to said nonwoven fabric to form a unitary nonwoven laminate structure, wherein a ratio of said melt index of said linear low density polyethylene polymer to said melt flow rate of said polypropylene polymer ranges from about 0.5 to about 1.57.