Patent ID: 6207602
Filing Date: 2001-03-27
Classification: B32B,D04H,Y10T

Abstract:
A nonwoven fabric comprising 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 the fibrous material and comprising a linear low density polyethylene polymer of a melt index of greater than 10 and a density of less than 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, wherein a ratio of said melt index of said linear low density polyethylene polymer to said melt floor rate of said polypropylene ranges from 0.5 to 1.57.