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AssigneeKimberly-Clark Worldwide, Inc.
InventorsMark G. KUPELIAN, Lei HUANG, John H. CONRAD, Jeffrey J. KRUEGER, Ray A. STERLING
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A nonwoven web that contains a plurality of fibers formed from a polyolefm composition is provided. The polyolefin composition contains a rigid propylene polymer that has a relatively high melting temperature and modulus of elasticity, which can provide good strength and durability to the nonwoven web. The polyolefm composition also contains a ductile propylene polymer that has a relatively high melt flow index, which can help achieve relatively fine fibers that minimize the stiffness of the web. In addition to a rigid and ductile polymer, the polyolefin composition also contains a slip additive (e.g., fatty acid derivative). Among other things, such an additive can even further enhance the overall softness of the composition.
A nonwoven web comprising a plurality of fibers formed from a polyolefin composition, wherein the polyolefin composition contains at least one rigid propylene polymer, at least one ductile propylene homopolymer, and at least one slip additive, and further wherein the ductile propylene homopolymer has a melt flow index of greater than about 1000 grams per 10 minutes, as determined at a load of 2160 grams and at 230° C. in accordance with ASTM D1238-13.
Dependencies are inferred from the claim text.