Spunbond nonwoven fabrics

Abstract

The instant invention provides nonwoven fabrics and staple or binder fibres prepared from an ethylene-based polymer having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.930 to 0. 970 g / cm3, a melt index (I2) in the range of from 15 to 30 or from 10 to 50 g / 10 minutes, a molecular weight distribution (Mw / Mn) in the range of from 2 to 3.5, and a molecular weight distribution (Mz / Mw) in the range of from less than 2.

Description

[0001] Cross References to Related Applications

[0002] This application is a non-provisional application claiming the benefit of priority to U.S. Provisional Patent Application No. 61 / 543,425, filed October 5, 2011, entitled "SPUNBOND NONWOVEN FABRICS," the teachings of which are incorporated by reference incorporated herein as if reproduced in its entirety hereinafter. technical field

[0003] This application relates to spunbond nonwoven fabrics. Background technique

[0004] Spunbond nonwoven articles are widely used in a variety of end-use applications, such as , to provide low basis weight, economical, strong, and cloth-like fabrics. The spunbond nonwoven typically includes monocomponent or bicomponent fibers. Bicomponent fibers include, for example, core / shell, fancake, side-by-side, islands-in-the-sea, and the like. A common bicomponent fiber construction is a core-sheath structure where the core comprises polypropylene homopolymer and the sheath comprises polye...

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