CD extensible nonwoven composite
AssigneeKimberly-Clark Worldwide, Inc.
InventorsJohn H. Conrad, James R. Fitts, Jr.
Life of this patent
Estimating the term…
Abstract
A nonwoven composite that has a dimension in a machine direction and a cross-machine direction is provided. The composite comprises a nonwoven facing positioned adjacent to an elastic film. The nonwoven facing contains a spunbond web that is formed by necking a base spunbond web. The base spunbond web includes a plurality of fibers generally oriented in the machine direction and exhibiting a machine direction tensile strength and cross-machine direction tensile strength. The ratio of the machine direction tensile strength to the cross-machine direction tensile strength is about 4:1 or more.
Claims14
A nonwoven composite having a dimension in a machine direction and a cross-machine direction, the nonwoven composite comprising a nonwoven facing positioned adjacent to an elastic film, the nonwoven facing containing a necked spunbond web comprising a base spunbond web formed from a plurality of fibers that are generally oriented in the machine-direction, wherein the fibers contain a polymer composition that includes a fatty acid derivative,
- wherein the base spunbond web has a machine direction tensile strength and cross-machine direction tensile strength, the ratio of the machine direction tensile strength to the cross-machine direction tensile strength being 3:1 or more;
- wherein the composite has a peak elongation in the cross-machine direction of 100% or more and experiences a load at 100% elongation in the cross-machine direction of 450 grams-force per inch (177.16 grams-force per centimeter) or less;
- and
- wherein the fibers are bonded together at multiple bond regions that are arranged in separate rows along the machine direction and spaced apart in the cross-machine direction within an individual row, wherein at least a portion of the bond regions are generally oriented in the machine direction.
Dependencies are inferred from the claim text.