Absorbent Article Containing a Nonwoven Web Formed from a Porous Polyolefin Fibers
AssigneeKimberly-Clark Worldwide, Inc.
InventorsVasily A. Topolkaraev, Ryan J. McEneany, Antonio J. Carrillo, Mark M. Mleziva, Andy J. Meyer
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Abstract
An absorbent article containing a nonwoven web that includes a plurality of polyolefin fibers is provided. The polyolefin fibers are formed by a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.
Claims31
1-42. (canceled)
An absorbent article that contains an absorbent member positioned between a backsheet and topsheet, wherein the absorbent article comprises a nonwoven web that includes a plurality of fibers formed from a thermoplastic composition that contains a continuous phase that includes a polyolefin matrix polymer and a nanoinclusion additive dispersed within the continuous phase in the form of discrete domains, wherein a porous network is defined in the composition that includes a plurality of nanopores having an average cross-sectional dimension of about 800 nanometers or less.
The absorbent article of claim 70, wherein the absorbent member comprises a core layer, surge layer, transfer delay layer, wrapsheet, ventilation layer, or a combination thereof, and wherein one or more of the layers contains the nonwoven web.
Dependencies are inferred from the claim text.