Preferential bend structure and articles containing said structure
First Claim
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1. A disposable absorbent article having a body-facing surface, a garment-facing surface, and at least a first end region, a second end region, and an intermediate region;
- wherein at least one of said first end region, second end region, or intermediate region comprises a first preferential bend structure having a first face and an opposing second face, said first preferential bend structure comprising a base layer and an auxiliary layer;
wherein the base layer comprises a material composition having a compressive modulus of Kbase and a tensile modulus of Tbase;
wherein the auxiliary layer comprises a material composition having a compressive modulus of Kaux and a tensile modulus of Taux;
wherein a sum of Kbase and Taux relative to a sum of Kaux and Tbase causes the first preferential bend structure to exhibit a preferential bend wherein a first deforming force applied to the first face results in a first deflection and a second deforming force applied to the second face results in a second deflection which is equal to the first deflection, and wherein the second deforming force is not equal to the first deforming force.
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Abstract
A preferential bend structure may have a first face and an opposing second face. The preferential bend structure may include at least a base layer and an auxiliary layer, wherein a first deforming force applied to the first face results in a first deflection and a second deforming force applied to the second face results in a second deflection which is equal to the first deflection, and wherein the second deforming force is not equal to the first deforming force.
76 Citations
18 Claims
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1. A disposable absorbent article having a body-facing surface, a garment-facing surface, and at least a first end region, a second end region, and an intermediate region;
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wherein at least one of said first end region, second end region, or intermediate region comprises a first preferential bend structure having a first face and an opposing second face, said first preferential bend structure comprising a base layer and an auxiliary layer; wherein the base layer comprises a material composition having a compressive modulus of Kbase and a tensile modulus of Tbase; wherein the auxiliary layer comprises a material composition having a compressive modulus of Kaux and a tensile modulus of Taux; wherein a sum of Kbase and Taux relative to a sum of Kaux and Tbase causes the first preferential bend structure to exhibit a preferential bend wherein a first deforming force applied to the first face results in a first deflection and a second deforming force applied to the second face results in a second deflection which is equal to the first deflection, and wherein the second deforming force is not equal to the first deforming force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A disposable absorbent article having opposing longitudinal edges and opposing lateral edges, the disposable absorbent article comprising:
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a topsheet defining a body-facing surface; a backsheet connected with the topsheet, the backsheet defining a garment-facing surface; an absorbent core disposed between the topsheet and the backsheet; a preferential bend structure comprising a base layer, a second layer, and an auxiliary layer, wherein the second layer is disposed on the base layer and wherein the second layer is disposed between the base layer and the auxiliary layer; wherein the base layer defines a first surface of the preferential bend structure and the second layer defines a second surface of the preferential bend structure, the second surface opposing the first surface, and wherein the auxiliary layer is joined directly with the second surface; wherein the preferential bend structure extends laterally between the opposing longitudinal edges; wherein the second layer comprises a plurality of void regions, each void region having a void opening and defining a void width and a void depth, and wherein the void width varies along the void depth such that a maximum void width is defined at void opening; wherein each void opening is disposed adjacent the second surface and the auxiliary layer with each void extending into the second layer from the second surface toward the base layer; wherein a first deforming force applied to the first surface results in a first deflection and the first deforming force applied to the second surface results in a second deflection; and wherein the first deflection is greater than the second deflection; wherein preferential bend structure is disposed between the absorbent core and the backsheet with the base layer disposed adjacent the backsheet and the auxiliary layer disposed adjacent the absorbent core; and wherein the preferential bend structure bends laterally across an intermediate region to form a U-shape between the opposing longitudinal edges and is adapted to collect body exudates between a wearer'"'"'s crotch region and the absorbent core.
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Specification