Presented is an absorbent article including a chassis including an outer cover having an interior surface and an exterior surface and an absorbent structure positioned adjacent the interior surface of the outer cover, the chassis including a crotch region positioned in between a front region and a b
Presented is an absorbent article including a chassis including an outer cover having an interior surface and an exterior surface and an absorbent structure positioned adjacent the interior surface of the outer cover, the chassis including a crotch region positioned in between a front region and a back region, the front region and the back region defining a waist region therebetween; and first and second conductive elements contained in the chassis, the conductive elements extending from the waist region to the crotch region without intersecting, the first and second conductive elements forming part of a circuit that is configured to sense the presence of a substance, wherein the conductive elements include a conductive nonwoven web including conductive fibers.
대표청구항▼
1. An absorbent article comprising: a chassis comprising an outer cover having an interior surface and an exterior surface and an absorbent structure positioned adjacent the interior surface of the outer cover, the chassis including a crotch region positioned in between a front region and a back reg
1. An absorbent article comprising: a chassis comprising an outer cover having an interior surface and an exterior surface and an absorbent structure positioned adjacent the interior surface of the outer cover, the chassis including a crotch region positioned in between a front region and a back region, the front region and the back region defining a waist region therebetween;a current source configured to be releasably fastenable to the exterior surface; andfirst and second conductive elements contained in the chassis and in electrical communication with the current source, the first and second conductive elements forming part of a circuit that is configured to conduct current from the current source in the presence of a substance that reduces the resistance between the first and second conductive elements, wherein the conductive elements include a conductive nonwoven web comprising conductive fibers. 2. An absorbent article as defined in claim 1, further comprising first and second pad members, wherein the first pad member and the second pad member comprise a conductive nonwoven web. 3. An absorbent article as defined in claim 2, further comprising a signaling device including the current source and a first terminal and a second terminal that are electrically connected to the first and second pad members respectively. 4. An absorbent article as defined in claim 1, wherein the conductive fibers contained within the nonwoven web comprise carbon fibers. 5. An absorbent article as defined in claim 4, wherein the carbon fibers have a length of from about 1 mm to about 12 mm. 6. An absorbent article as defined in claim 4, wherein the carbon fibers have a average diameter of from about 3 microns to about 15 microns. 7. An absorbent article as defined in claim 1, wherein the conductive fibers have an aspect ratio of from about 100:1 to about 1000:1. 8. An absorbent article as defined in claim 1, wherein the nonwoven web comprises a single ply web containing distinct layers of fibers, the nonwoven web including at least a first layer and a second layer, the conductive fibers all being contained in the second layer. 9. An absorbent article as defined in claim 8, wherein the single ply of the nonwoven web contains a third layer, the second layer being positioned in between the first layer and the third layer, the first and third layers comprising pulp fibers, the second comprising conductive fibers combined with pulp fibers. 10. An absorbent article as defined in claim 1, wherein the first conductive element and the second conductive element comprise separate conductive zones within the conductive nonwoven web. 11. An absorbent article as defined in claim 1, wherein the conductive nonwoven web contains pulp fibers in an amount of at least about 50% by weight. 12. An absorbent article as defined in claim 11, wherein the conductive nonwoven web contains conductive fibers in an amount from about 1% to about 50% by weight, the nonwoven web having a basis weight from about 15 gsm to about 100 gsm. 13. An absorbent article as defined in claim 1, wherein the conductive nonwoven web has at least one conductive zone that has a resistance of less than about 1500 ohms/square. 14. An absorbent article as defined in claim 1, wherein the conductive nonwoven web is laminated to a nonwoven or a polymeric film material. 15. An absorbent article comprising: a chassis comprising an outer cover having an interior surface and an exterior surface and an absorbent structure positioned adjacent the interior surface of the outer cover, the chassis including a crotch region positioned between a front region and a back region, the front region and the back region defining a waist region therebetween; anda wetness sensing device that is activated when a conductive substance is detected in the absorbent article, the wetness sensing device comprising at least one conductive element in communication with a signaling device including a current source, the conductive element comprising a conductive nonwoven web comprising a mixture of pulp fibers and conductive fibers, the conductive fibers comprising carbon fibers, metallic fibers, polymeric fibers containing a conductive material, or mixtures thereof, and wherein, when a conductive substance is contacted with the conductive element, the conductive element conducts current from the current source and the signaling device produces a signal for indicating the presence of the conductive substance. 16. An absorbent article as defined in claim 15, wherein the conductive nonwoven web comprises a wet laid web. 17. An absorbent article as defined in claim 15, wherein the conductive fibers contained within the nonwoven web comprise carbon fibers. 18. An absorbent article as defined in claim 17, wherein the carbon fibers have a length of from about 1 mm to about 12 mm. 19. An absorbent article as defined in claim 17, wherein the carbon fibers have an average diameter of from about 3 microns to about 15 microns. 20. An absorbent article as defined in claim 15, wherein the nonwoven web comprises a single ply web containing distinct layers of fibers, the nonwoven web including at least a first layer and a second layer, the conductive fibers all being contained in the second layer. 21. An absorbent article as defined in claim 20, wherein the single ply of the nonwoven web contains a third layer, the second layer being positioned in between the first layer and the third layer, the first and third layers comprising pulp fibers, the second comprising conductive fibers combined with pulp fibers. 22. An absorbent article as defined in claim 15, wherein the wetness sensing device includes a first conductive element spaced from a second conductive element, the first and second conductive elements forming an open circuit that closes when a conductive substance extends between the first conductive element and the second conductive element, the second conductive element also comprising a conductive nonwoven web containing a mixture of pulp fibers and conductive fibers. 23. An absorbent article as defined in claim 22, wherein the first conductive element is a separate and distinct structure from the second conductive element. 24. An absorbent article as defined in claim 22, wherein the first conductive element and the second conductive element comprise separate conductive zones within the conductive nonwoven web. 25. An absorbent article as defined in claim 24, wherein each of the conductive zones present within the nonwoven web are separated by a nonconductive zone. 26. An absorbent article as defined in claim 15, wherein the conductive nonwoven web comprises an uncreped through-air dried web. 27. An absorbent article as defined in claim 15, wherein the conductive nonwoven web contains pulp fibers in an amount of at least about 50% by weight. 28. An absorbent article as defined in claim 27, wherein the conductive nonwoven web contains conductive fibers in an amount from about 1% to about 50% by weight, the nonwoven web having a basis weight from about 15 gsm to about 100 gsm. 29. An absorbent article as defined in claim 28, wherein the conductive nonwoven web has at least one conductive zone that has a resistance of less than about 1500 ohms/square. 30. An absorbent article as defined in claim 15, wherein the conductive nonwoven web is laminated to a nonwoven or a polymeric film material.
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