TARGET APERTURED TOPSHEET
20230128500 · 2023-04-27
Assignee
Inventors
Cpc classification
International classification
A61F13/537
HUMAN NECESSITIES
A61F13/512
HUMAN NECESSITIES
Abstract
The present disclosure includes absorbent products having an apertured zone in the surface facing the wearer for enhanced absorbency and BM containment. Some aspects of the products include a chassis including a topsheet defining a plurality of apertures, and a backsheet, an absorbent core disposed between the topsheet and the backsheet, and an acquisition-distribution layer (ADL) disposed between the topsheet and the absorbent core, the ADL including a plurality of external edges that cooperate to define an ADL boundary. In some aspects at least 75% of the plurality of apertures are defined within an apertured region that is disposed vertically above the ADL and is enclosed within the ADL boundary when the chassis is in a flat configuration.
Claims
1. An absorbent garment comprising: a chassis including opposing front and rear waist portions, a crotch portion extending longitudinally between the front and rear waist portions, a topsheet defining a plurality of apertures, and a backsheet; an absorbent core disposed between the topsheet and the backsheet, at least a portion of the absorbent core positioned in the crotch portion; and an acquisition-distribution layer (ADL) disposed between the topsheet and the absorbent core, the ADL including a plurality of external edges that cooperate to define an ADL boundary; wherein at least 75% of the plurality of apertures are defined within an apertured region that is disposed vertically above the ADL and is enclosed within the ADL boundary when the chassis is in a flat configuration.
2. The absorbent garment of claim 1, wherein the apertured region overlies at least a majority of the ADL.
3. The absorbent garment of claim 1, wherein the apertured region overlies an entirety of the ADL.
4. The absorbent garment of claim 1, wherein 95% of the plurality of apertures are defined within an apertured region
5. The absorbent garment of claim 1, wherein a width and a length of the apertured region are substantially equal to a width and a length, respectively, of the ADL.
6. The absorbent garment of claim 1, wherein: the chassis includes: a first end, the front waist portion extending from the first end; and a second end opposite the first end, the rear waist portion extending from the second end; and the apertured region is positioned closer to the first end than the second end.
7. The absorbent garment of claim 1, wherein at least a majority of the apertured region is disposed in a front half of the chassis.
8. The absorbent garment of claim 1, wherein the topsheet includes only a single apertured region.
9. The absorbent garment of claim 1, wherein the topsheet includes: the apertured region; and a non-apertured region surrounding the apertured region, the non-apertured region includes a percentage of open area less than two percent
10. The absorbent garment of claim 9, wherein the non-apertured region spans at least a majority of the topsheet.
11. The absorbent garment of claim 1, wherein the external edges includes: two widthwise edges extending in a first direction; and two lengthwise edges extending in a second direction perpendicular to the first direction.
12. The absorbent garment of claim 1, wherein the topsheet includes a liquid-permeable nonwoven; and the backsheet includes a liquid impermeable material.
13. The absorbent garment of claim 1, wherein each aperture includes a maximum transverse dimension that is between 0.25 and 5.0 mm.
14. An absorbent garment comprising: a chassis including: a topsheet defining a plurality of apertures and having: an apertured region in which the topsheet includes a percentage of open area greater than or equal to 5%; and an non-apertured region in which the topsheet includes a percentage of open area less than one percent; and a backsheet; an absorbent core disposed between the topsheet and the backsheet; and an acquisition-distribution layer (ADL) disposed between the topsheet and the absorbent core, the ADL including a plurality of external edges that cooperate to define an ADL boundary; wherein the apertured region overlies the ADL and is enclosed within the ADL boundary.
15. The absorbent garment of claim 14, wherein an area of the ADL is less than or equal to an area of the absorbent core.
16. The absorbent garment of claim 15, wherein an area of the apertured region is between 25% and 95% of the area of the ADL.
17. The absorbent garment of claim 15, wherein an area of the non-apertured region is greater than the area of the ADL.
18. The absorbent garment of claim 14, wherein: the chassis includes: a first end and an opposing second end; a front portion extending from the first end; and a rear portion extending from the second end; and at least a majority of the apertured region is disposed within the front portion of the chassis.
19. The absorbent garment of claim 18, wherein an entirety of the apertured region is disposed within the front portion of the chassis.
20. An absorbent garment comprising: a chassis including opposing front and rear waist portions, a crotch portion extending longitudinally between the front and rear waist portions, a topsheet, and a backsheet; an absorbent core disposed between the topsheet and the backsheet, at least a portion of the absorbent core positioned in the crotch portion; and an acquisition-distribution layer (ADL) disposed between the topsheet and the absorbent core, the ADL including a plurality of external edges that cooperate to define an ADL boundary; wherein, when the chassis is in a flat configuration, the topsheet includes: an apertured region overlying the ADL and enclosed within the ADL boundary; and a non-apertured region; and where an area of the apertured region is at least 90% of an area of the ADL.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The following drawings illustrate by way of example and not limitation. For the sake of brevity and clarity, every feature of a given structure is not always labeled in every figure in which that structure appears. Identical reference numbers do not necessarily indicate an identical structure. Rather, the same reference number may be used to indicate a similar feature or a feature with similar functionality, as may non-identical reference numbers. Views in the figures are drawn to scale, unless otherwise noted, meaning the sizes of the depicted elements are accurate relative to each other for at least the embodiment in the view.
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DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0025] Referring to
[0026] As shown in
[0027] Chassis 104 includes a front waist portion 124, an opposing rear waist portion 128, and a crotch portion 132 extending longitudinally between the front and rear waist portions. Front waist portion 124 includes a portion of chassis 104 extending from a first end 116 that is associated with a front end (e.g., edge) of article 100 when worn by a user. In some configurations, front waist portion 124 includes only first end 116, while, in other configurations, the front waist portion includes the first end and a portion of the chassis extending from the first end. In some configurations, front waist portion 124 may have a length that is less than, equal to, or between any two of: 25, 20, 15, 12, 10, 8, 6, 5, 4, 3, 2, or 1 percent of length 122 (e.g., the overall length) of chassis 104. Rear waist portion 128 includes a portion of chassis 104 extending from a second end 120 that is associated with a rear end (e.g., edge) of article 100 when worn by a user. Rear waist portion 128 includes second end 120 and/or a portion of the chassis extending from the second end. In some configurations, rear waist portion 128 may have a length that is less than, equal to, or between any two of: 25, 20, 15, 12, 10, 8, 6, 5, 4, 3, 2, or 1 percent of length 122 of chassis 104. In some configurations, crotch portion 132 includes a portion of chassis 104 extending directly between front waist portion 124 and rear waist portion 128.
[0028] As shown in
[0029] In some configurations, article 100 includes an absorbent core 140 disposed between topsheet 108 and backsheet 112. Core 140 is configured to absorb liquid in the absorbent article and may include materials suitable for absorbing liquids, such as, for example, a mixture of conventional fluff (e.g., cellulosic fibers) and superabsorbent polymer (SAP) particles. “Superabsorbent” or “superabsorbent material” or “SAP” refers to a water-swellable, water-insoluble organic or inorganic material capable, under the most favorable conditions, of absorbing at least about 15 times its weight in an aqueous solution containing 0.9 weight percent sodium chloride and, more desirably, at least about 30 times its weight in an aqueous solution containing 0.9 weight percent sodium chloride and, even more desirably, at least about 50 times its weight in an aqueous solution containing 0.9 weight percent sodium chloride.
[0030] Article 100 also includes an acquisition-distribution layer (ADL) 150 disposed between the topsheet and the absorbent core. “Layer” when used in the singular can be a single element or a plurality of elements. For example, a plurality of sheets may together define a single layer, such as, for example, a layer with a particular function to which the sheets of the layer contribute. ADL 150 functions to acquire the liquid as rapidly as it is added to the product (to prevent uncontrolled surface runoff) and then spreads or distributes the acquired liquid over a larger surface area of absorbent core 140 at a rate that the core can absorb the liquid without undesired internal runoff and leakage. The core 140, in turn, wicks the liquid into the core to reduce wetness in ADL 150, to present a relatively dry ADL surface to the wearer and partially restoring the ADL to its initial state to acquire subsequent insults of liquid.
[0031] ADL 150 can be sized and have a construction to help mitigate liquid trapping in topsheet 108 and thereby promote dryness at the topsheet. For example, ADL 150 can include one or more longitudinal edges 152 and one or more lateral edges 154 that cooperate to define an ADL boundary 156. Longitudinal edges 152 include edges of ADL 150 which extend further in longitudinal direction D1 than lateral direction D2 and lateral edges 154 include edges of the ADL which extend further in the lateral direction than the longitudinal direction D1. As shown in
[0032] In some configurations, an area of ADL 150 (e.g., surface of ADL enclosed by ADL boundary 156) might be smaller than absorbent core 140; in this manner, the larger absorbent core can have a relatively large absorption capacity and the smaller ADL can require fewer materials for its construction (e.g., to reduce costs) while being positioned at or near the location on chassis 104 likely to received liquid insults (e.g., closer to front waist portion 124 than to rear waist portion 128) such that it adequately promotes topsheet dryness. In the illustrative example shown in
[0033] Article 100 further includes one or more apertured regions 164 in which topsheet 108 defines a plurality of apertures 168 and one or more non-apertured regions 180. In some configurations, apertured region 164 includes a portion of topsheet 108 having an aperture density (e.g., as determined by dividing the total number of apertures 168 by an area of the topsheet) is greater than or equal to any one of, or between any two of: 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 4.0, 4.5, 5.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, 11.0, 11.5, 12.0, or 15.0 (e.g., between 5 and 12) apertures 168 per square centimeter of topsheet 108. Additionally, or alternatively, apertured region 164 includes a portion of topsheet 108 having a percentage of open area (e.g., as determined by dividing a total area of apertures 168 by an area of the topsheet) that is greater than or equal to any one of, or between any two of: 5, 10, 15, 20, 25, 30, 35, 40, 45 or 50 percent (%) (e.g., between 10 and 30% or between 15 and 25%. As depicted, substantially all of (e.g., at least 75% of, and preferably at least 80, 90, 95, 98, or 100% of) the plurality of apertures 168 defined by topsheet 108 are disposed within apertured region 164 Apertures 168 can be arranged in any suitable manner, such as, for example, in a plurality of rows and columns that may be aligned (e.g., a grid as shown in
[0034] Each of apertures 168 can have any suitable shape and size; as shown in
[0035] Apertures 168 can be arranged in two or more rows, each of the rows including two or more of the apertures aligned in lateral direction D2. Additionally, or alternatively, Apertures 168 can be arranged in two or more columns, each of the columns including two or more of the apertures aligned in longitudinal direction D1. In some configurations, apertures 168 may, but need not, be equally spaced. In some such configurations, each aperture 168 can be spaced apart from at least one other of the protrusions by a distance 172, measured between the centers of the apertures, that is greater than or equal to any one of, or between any two of, 1.0, 1.5, 2.0, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0 or 10.0 mm (e.g., between 1.0-6.0 mm).
[0036] Apertured region 164 overlies at least a portion of ADL 150. In some configurations, apertured region 164 is contained to portions of topsheet 108 that overlie ADL 150. For example, as shown in
[0037] In some configurations, apertured region 164 may be at least partially disposed within front waist portion 124 or crotch portion 132 to limit fluid (e.g., from a runny BM) flow across topsheet 108 toward the front waist portion. In some such configurations, apertured region 164 may be disposed nearer to front waist portion 124 (e.g., first end 116) than to rear waist portion 128 (e.g., second end 120). In some configurations, apertured region 164 is not positioned within rear waist portion 128. In other configurations, an area of apertured region 164 positioned within front waist portion 124 is greater than an area of the apertured region positioned within rear waist portion 128.
[0038] Non-apertured region 180 includes a portion of topsheet 108 having an aperture density less than 2.0 apertures 168 (e.g., less than 1.5, 1.0, 0.5, or 0.25 apertures) per square centimeter of topsheet 108, a percentage of open area that is less than 30% (e.g., less than 25, 20, 15, 10, 5, 3 or 1%), or both. Accordingly, non-apertured region 180 may not enable a fluid (or a fluid-solid mixture) to easily pass through topsheet 108. In some configurations, as shown in
[0039] Non-apertured region 180 may make up at least a majority of topsheet 108. For example, non-apertured region 180 may have an area that is between 50% and 90% (e.g., between any two of 50, 55, 60, 65, 70, 75, 80, 85, or 90%) of an area of topsheet 108. Non-apertured region 180 may abut a portion of apertured region 164 and, in some configurations, the non-apertured region and the apertured region cooperate to form an entirety of topsheet 108. In some such configurations, non-apertured region 180 may surround apertured region 164. As described herein, non-apertured region 180 may limit the amount to fluid that passes through topsheet 108. This may allow chassis 104 to (1) direct fluid flowing on topsheet to certain portions of the topsheet (e.g., apertured region 164) where the fluid may be better absorbed into ADL 150 and/or core 140, (2) limit fluid from escaping from the core up through the topsheet, or both.
[0040] Referring additionally to
[0041] As shown in
[0042] Unexpectedly, apertured region 164a may promote sufficient BM containment despite being positioned further away from rear portion 216, which is nearest the anus of a wearer when article 100a is worn. For runny BMs, the fluid-solid mixture will travel along topsheet 108a and be readily absorbed in ADL 150a via apertures (e.g., 168) and mitigate the risk of the fluid-solid mixture from leaking outside of article 100a. In some configurations, apertured region 164a is positioned near rear portion 216 (e.g., portion of front portion 212 nearest the rear portion) to absorb the fluid-solid mixture before the mixture travels further into the front portion. In this way, apertured region 164a may limit contamination of the mixture to the wearer's anus and avoid contamination of skin nearer the wearer's genitals. Additionally, as apertured region 164a does not overlie an entirety of core 140, topsheet 108a (via non-apertured region 180a) also functions to keep material (e.g., SAP) in the core from escaping up through the topsheet and getting on the wearer. Accordingly, apertured region 164a provides adequate BM containment without the additional need for an alternative SAP containment.
[0043] Referring now to
[0044] Referring now to
[0045] In yet other configurations, as illustrated in
[0046] The above specification and examples provide a complete description of the structure and use of illustrative embodiments. Although certain embodiments have been described above with a certain degree of particularity, or with reference to one or more individual embodiments, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this invention. As such, the various illustrative embodiments of the methods and systems are not intended to be limited to the particular forms disclosed. Rather, they include all modifications and alternatives falling within the scope of the claims, and embodiments other than the one shown may include some or all of the features of the depicted embodiment. For example, elements may be omitted or combined as a unitary structure, and/or connections may be substituted. Further, where appropriate, aspects of any of the examples described above may be combined with aspects of any of the other examples described to form further examples having comparable or different properties and/or functions, and addressing the same or different problems. Similarly, it will be understood that the benefits and advantages described above may relate to one embodiment or may relate to several embodiments.
[0047] The claims are not intended to include, and should not be interpreted to include, means-plus- or step-plus-function limitations, unless such a limitation is explicitly recited in a given claim using the phrase(s) “means for” or “step for,” respectively.