Absorbent article with side barriers of non-uniform size

专利摘要:
ABSORBENT ARTICLE WITH NON-UNIFORM SIZE SIDE BARRIERS. An absorbent article has non-uniformly dimensioned side barrier features and includes an underframe. The backsheet includes a backsheet layer, a first fluid permeable topsheet layer joined to the backsheet layer, and a first absorbent core layer sandwiched between the first topsheet layer and the backsheet with the first layer top sheet having more lateral edges. The article also includes an upper structure in fluid communication with the lower structure. The topsheet is adjacent and joined to the backsheet in the first fluid-permeable topsheet layer, and includes a second fluid-permeable topsheet layer and at least one additional absorbent layer. The second topsheet layer is folded over at least one additional layer to create substantially straight lateral edges of the side barrier functionality, with the lateral edges being the inside of most lateral edges of the first absorbent core layer or generally aligned along depth direction with the most lateral edges of the first absorbent core layer. The upper structure is joined (...).
公开号:BR112015028328B1
申请号:R112015028328-4
申请日:2014-05-27
公开日:2022-01-25
发明作者:Franz Aschenbrenner；Cai Shan Tan；Jina Gwag；DooHong Kim；Sangwook Lee；Meijia Ng；Sohyun S. Park
申请人:Kimberly-Clark Worldwide, Inc；
IPC主号:

专利说明:

[0001] This patent application claims the benefit of priority over US Provisional Patent Application No. 61/829,620, filed May 31, 2013. The entirety of Patent Application No. 61/829,620 is incorporated herein by reference. FIELD OF THE INVENTION
[0002] The present invention relates to absorbent toiletries with side barrier and padding features to control leakage of fluids from the side edges of an article and also to provide comfort close to the skin of a consumer. More particularly, it relates to absorbent side barrier functionality for absorbent articles of personal hygiene. HISTORIC
[0003] Absorbent toiletries such as feminine hygiene products, adult incontinence products, and baby and child hygiene products often incorporate at least two layers, and more commonly, at least three layers in their structures. Absorbent toiletries traditionally include in their backing at least one cover layer or top sheet, which comes into contact with a consumer's skin during use, a backsheet layer in contact with the garment that prevents leakage of body fluids through the back surface of the article, and an absorbent core layer sandwiched between the topsheet layer and the backsheet layer, which absorbs and retains body fluid that is received through the topsheet layer. In feminine hygiene items such as napkins, pads and panty liners, adult incontinent items such as tampons, inserts, underwear, diapers and baby diapers, body fluids may have a tendency to flow along the side edges of the item towards the legs of the baby. user in the genital region. For sanitary napkins, sanitary napkins and panty liners, this directional movement is often close to the "tabs", "tabs" or "guides" (if any), and such "tabs", "tabs" or "guides" (if any) being extensions of the layer that are used to secure the article to the wearer's underwear. To deal with such leakage, manufacturers of absorbent articles often incorporate additional side barrier functionality to provide protection against fluid leakage. Such leakage protection is designed to prevent bodily fluids such as urine, feces, or menstruation from seeping over or through the side edges of the article, and subsequently staining a wearer's underwear, regular clothing, or bedding. Traditional side barrier functionality can incorporate a additional layer or structure (which provides lift above the plane of the absorbent core layer within the article) to physically prevent fluid flow from reaching the edges the sides of the article. Examples of such additional structures include strips of absorbent or non-absorbent material, such as those described in US Patent Nos. 5,599,337 to McCoy, 5,624,423 to Anjur et al., 5,713,885 to Jorgenson et al., E 5,807,367 to Dilnik et al., as well as those illustrated in CN 2436133Y. Such wall-like structures can be effective in reducing or eliminating side leakage, but require additional layering costs and complicated fabrication methods for cutting and/or placing the structures on the article support. Additionally, these wall-like structures have parallel side edges that interfere with the wearer's comfort by not conforming to the wearer's inner thigh (groin) regions when in use.
[0004] Alternatively, such side barrier features may be formed from loops or pleats in the topsheet layer or from other additional layers in absorbent articles, as can be seen, for example, in United States Publication 2001/020157 for Mizutani et al. As seen with separate raised structures previously described, such loops or bends can present complex fabrication challenges and additional costs. Although placement of walls only along certain regions of a side edge is known, such as discrete wall sections adjacent to a discrete wing seen in Patent No. 5,447,507 to Yamamoto, such additional structure requires relatively few manufacturing steps. complex and do not, by themselves, offer additional absorption.
[0005] Other side barrier structures have used elastic threads or elasticized portions along the side edge of an article, or alternatively, retractable wire material, to lift portions of a topsheet layer of an article substantially above the plane of the web. absorbent layer, which provides a close fit to the body of the side barrier feature. Such elastic functionality may be present in the article as it is initially obtained by the consumer. Alternatively, a retractable feature may be activated on an article only after an event has occurred, such as subsequent contact with a consumer's body fluid or heat during use. Such elastic or retractable side barrier features are often employed in absorbent articles for infants and children, such as diapers, and absorbent feminine and adult incontinent hygiene articles, such as sanitary napkins and absorbent inserts. Elastic or retractable side barrier functionalities are described for example in US Patent No. 6,902,552 to VanGompel et al., US Publications 2012/296303 to Ng et al., and Mizutani noted above, as well as the European Publication EP0606082 to McDaniel. While such elastic or retractable features can be effective in blocking the flow of bodily fluids out of the article and/or containing the fluid in a cup-like configuration, such elastic or retractable materials are often made from expensive polymeric materials, which significantly increases the overall cost of the absorbent article, as well as the complexity of the article manufacturing process. Even with the variety of side barrier features described above, there is still a need for effective side barrier features that are formed with absorbent structures that provide specific barrier dimensions along specific parts of the side edges of absorbent articles. There is still a need for barrier structures that do not incur additional material costs or require complex fabrication steps for their implementation. For example, there is a need for such barrier features that can be formed from previously existing non-barrier layers of an article.
[0006] Embossed channels or grooves have also been used to create wall-like topographical features in order to slow fluid movement to or beyond the side edges of an article. An example of such raised channels can be found in US Patent No. 5,795,344 to Chappell. Such raised channels or grooves may be of any shape and/or pattern, may be located in various positions on the article, such as a rectangular channel peripherally positioned in Chappell, or alternatively, arches, such as those illustrated in U.S. Patent No. 6,410,822 to Mizutani. Such embossed channel shapes may include lane or bone designs or discrete patterns. However, even with such a variety of embossed channel shapes and embossing positions, there is a need for improved barrier structures that provide non-uniformly dimensioned absorbent functionality above the plane of the main absorbent layer of an article. Such non-uniformly dimensioned absorbent functionality could provide specific barrier protection in certain areas/regions along a side edge of the article, without wasting article construction materials and without additional material costs for an absorbent article.
[0007] Finally, "composite" sanitary pads are also known in the feminine hygiene area. Such articles are exemplified in international publication WO1998/43585 to Chatterjee. However, even with such composite pads, there is still a need for sanitary pads with absorbent barriers that are oriented to provide greater protection along the high-leakage areas of such pads, and that are low-cost (does not require extra materials or steps complex construction). SUMMARY OF THE INVENTION
[0008] In one embodiment of the invention, an absorbent article having non-uniformly dimensioned side barrier features has a longitudinal direction, a transverse direction and a depth direction, longitudinally directed side edges and longitudinal edges. The absorbent article includes a backsheet with longitudinally directed side edges, the backsheet includes a backsheet layer, a first fluid permeable topsheet layer joined to the backsheet cane, and a first absorbent core layer sandwiched between the first liquid permeable topsheet layer and the backsheet layer. The first absorbent core layer includes the most lateral edges. The absorbent article further includes a topsheet in fluid communication with the backsheet, with the topsheet adjacent and joined to the backsheet on the first fluid-permeable topsheet layer, and includes a second fluid-permeable topsheet layer and at least at least one additional absorbent layer selected from at least one group consisting of a transfer layer, a second absorbent core layer, and a topsheet. The second topsheet layer is folded over at least one additional absorbent layer to create the most lateral edges of the substantially straight side barrier functionality. The most lateral edges of the side barrier functionality are the inside of the most lateral edges of the first layer of absorbent core or are generally aligned along the depth direction with the most lateral edges of the first layer of absorbent core. The upper frame is joined to the lower frame at or immediately adjacent to the most lateral edges of the side barrier feature at at least one of the longitudinal ends of the article. The upper structure includes embossed channels, or embossed features, concave or recessed from the most lateral edges of the side barrier feature, and the embossed channels or embossed features are at least two layers of the article. The raised channels or raised features and the most lateral edges of the side barrier feature define side barrier features that have non-uniform side width dimensions or a combination of non-uniform side width and non-uniform height dimensions along the direction length of the article.
[0009] In an alternative embodiment of the invention, an absorbent article includes a second fluid-permeable topsheet layer, a transfer layer underlying the second fluid-permeable topsheet layer. In yet another alternative embodiment of the invention, an absorbent article includes a topsheet having a second fluid-permeable topsheet layer and a second absorbent core layer underlying the second fluid-permeable topsheet layer. In yet another alternative embodiment of the invention, the absorbent article includes a top structure having a second absorbent core layer underlying the transfer layer.
[0010] In yet another alternative embodiment of the invention, the raised channels comprise continuous concave channels separated by a minimum distance of between about 20 and 40 mm. In another alternative embodiment, the absorbent article also includes flaps that extend laterally along the longitudinally directed side edges of the article. In another alternative embodiment of the invention, the side barrier features of the absorbent article have a side width range between a value greater than 0 to about 12 mm, and where the widest side width is positioned adjacent these flaps. In another alternative embodiment of the invention, the lateral width of the absorbent article is non-uniform along the longitudinal direction of the article. In another alternative embodiment of the invention, the side barrier features of the absorbent article have a lateral width of between about 6 to 10 mm at least at one location along the longitudinal direction. In another alternative embodiment of the invention, the side barrier features of the absorbent article have a height range of between 1 and 12 mm along the longitudinal direction, and the greatest height of the side barrier is positioned adjacent to the flaps of the article. In another alternative embodiment of the invention, the side barrier features of the absorbent article are positioned closer to one longitudinal end than the other longitudinal end. In yet another alternative embodiment of the invention, the absorbent article includes raised channels or raised features that extend downwardly through at least three layers within the article. In another alternative embodiment of the invention, the absorbent article includes raised channels or raised features that extend downwardly through at least three layers within the article. In another alternative embodiment of the invention, the absorbent article includes a first fluid permeable topsheet layer that is continuously along the transverse direction.
[0011] In yet another alternative embodiment of the invention, an absorbent article topsheet has a basis weight of all layers excluding the second fluid permeable topsheet layer of between 18 and 350 g/m 2 . In yet another alternative embodiment of the invention, the second fluid permeable topsheet layer of the absorbent article does not completely surround the additional absorbent layer (or layers). In another alternative embodiment of the invention, the upper structure of the absorbent article includes a second absorbent core layer and the second absorbent core layer has a second width in the transverse direction of the absorbent core layer. In such an embodiment, the first absorbent core layer has a first transverse width of the absorbent core layer, and the ratio of the second transverse width of the absorbent core layer to the first transverse width of the absorbent core layer is 0.7 to about 0.9. In another alternative embodiment of the invention, the side barrier features of the absorbent article are not attached to the underframe along its most lateral edges, for a length between about 70 and 200 mm of the side barrier features. In another alternative embodiment of the invention, the side barrier features of the absorbent article are not attached to the underframe along its most lateral edges, for a length between about 110 and 130 mm of the side barrier features. In another alternative embodiment of the invention, the side barrier features of the absorbent article demonstrate a non-uniform side width dimension along the longitudinal direction. In another alternative embodiment of the invention, the side barrier features of the absorbent article demonstrate a non-uniform height dimension along the longitudinal direction. In another alternative embodiment of the invention, the side barrier features of the absorbent article demonstrate a non-uniform side width dimension and non-uniform height along the longitudinal direction. In another alternative embodiment of the invention, the absorbent article includes a central longitudinal direction and the side barrier features are symmetrically in the central longitudinal direction of the article. In another alternative embodiment of the invention, the absorbent article includes side barrier features closer to one longitudinal end of the article than to the other longitudinal end of the article. In another alternative embodiment of the invention, the absorbent article includes side barrier features that are visually highlighted. In yet another alternative embodiment of the invention, the upper structure of the absorbent article is attached to the lower structure at the most lateral edges of the side barrier functionality at both longitudinal ends of the article. In another alternative embodiment of the invention, the upper structure of the absorbent article is joined to the lower structure, at the most lateral edges of the side barrier functionality, at one of the longitudinal ends of the article and also in a substantially interior position of the other longitudinal end. of the article, in a position oriented towards the center of the absorbent. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] A full and enabling disclosure of the present invention is set out below more particularly in the remainder of the specification, including reference to the accompanying Figures, by:
[0013] FIGURE 1 is a perspective view of an embodiment of an absorbent article of the invention in the form of a sanitary napkin.
[0014] FIGURE 1A is a perspective view of an alternative embodiment of an absorbent article of the invention in the form of a sanitary napkin.
[0015] FIGURE 1B is a perspective view of another alternative embodiment of an absorbent article of the invention in the form of a sanitary napkin.
[0016] FIGURE 1C is a perspective view of another alternative embodiment of an absorbent article of the invention in the form of a sanitary napkin.
[0017] FIGURE 2 is a top plan view of the feminine sanitary napkin of FIGURE 1, highlighting regions or zones that contain dimensioned and non-uniform barrier features that are not immediately nailed to the underlying layers.
[0018] FIGURE 3 is an exploded cross-sectional view of the feminine sanitary napkin of FIGURE 2, taken along line 3-3.
[0019] FIGURE 3A is an exploded cross-sectional view of the feminine sanitary napkin of FIGURE 2, taken along line 3A-3A (and lines 3B-3B, which is a mirror image of line 3A-3A).
[0020] FIGURE 4 is an exploded cross-sectional view of an alternate embodiment of the feminine sanitary pad of FIGURE 3, taken in approximately the same position along a longitudinal direction of the pad.
[0021] FIGURE 5 is an exploded cross-sectional view of another alternative embodiment of the feminine sanitary napkin of FIGURE 3, taken in approximately the same position along a longitudinal direction of the sanitary napkin.
[0022] FIGURE 6 is an exploded cross-sectional view of another alternate embodiment of the feminine sanitary pad of FIGURE 3, taken in approximately the same position along a longitudinal direction of the pad.
[0023] FIGURE 7 is an exploded cross-sectional view of another alternative embodiment of the feminine sanitary pad of FIGURE 3, taken in approximately the same position along a longitudinal direction of the pad.
[0024] FIGURE 8 is an exploded cross-sectional view of another alternative embodiment of the feminine sanitary napkin of FIGURE 3, taken in approximately the same position along a longitudinal direction of the sanitary napkin.
[0025] FIGURE 9 is a top plan view of alternative embodiments of the feminine sanitary napkin of FIGURE 3 in the form of an overnight sanitary napkin.
[0026] FIGURE 10 is a partial top perspective view of a part of a nighttime sanitary napkin of FIGURE 9.
[0027] FIGURE 11 is an exploded cross-sectional view of the alternate embodiment of the feminine sanitary napkin of FIGURE 9, taken along line 11-11.
[0028] FIGURE 11A is an exploded partial cross-sectional view of the alternate embodiment of FIGURE 9, taken along line 11A-11A of FIGURE 10 in the overhanging tail-like region.
[0029] FIGURE 12 is an exploded cross-sectional view of an alternate embodiment of the feminine sanitary napkin of FIGURE 3, taken in approximately the same position along a longitudinal direction of the sanitary napkin adjacent the flaps.
[0030] FIGURE 13 is an alternative embodiment of the sanitary napkin of FIGURE 1, wherein the raised channel is continuously adjacent to the periphery of the sanitary napkin. DESCRIPTION OF THE INVENTION
[0031] Detailed references will be made to various embodiments of the invention, with one or more examples described below. Each example is provided by way of explanation of the invention, not as a limitation of the invention. Indeed, it will be apparent to those skilled in the art that various modifications and variations may be made to the present invention without departing from the scope or spirit of the invention. For example, features illustrated or described as part of one embodiment can be used in another application to produce yet another embodiment. For the purposes of this application, like features will be represented by like numbers between the figures. While not expressly illustrated in each view or location, it should be understood that traditional absorbent article construction adhesive must be used between each of the various layers of the article to secure the layers within the article. Certain highlighted areas of adhesive bonding or absence of adhesive will also be presented throughout the text.
[0032] The articles of the present invention include an upper layered structure and a lower layered structure. The top and bottom layered structures each include a top sheet (which can be the same for both layers, or different for each layer). It has been found that by incorporating a topsheet layer that at least partially surrounds an absorbent layer, a fluid transfer layer, an alternate topsheet, or a combination thereof, along a depth direction of the absorbent article , to form a folded multi-layer top structure together with recessed embossed features, adjacent to the side edges of the article's folded top structure, a raised, outwardly angled side barrier feature for desired barrier protection in areas of high potential for damage. leak in an absorbent article (such as the areas adjacent to the flaps on a sanitary napkin) or the longitudinal edges, or both. Such high barrier features can be created without the use of expensive strip materials or additional layers, and by less complex, lower cost manufacturing processes. The side barrier functionality produced may be a discrete structure situated on the wearer's contact surface of the article, in just a specific location close to areas of high leakage potential, or alternatively, part of a larger structure that is also situated on the contact surface with the wearer of an article, and which includes side barrier features also strategically positioned along the longest length of the structure adjacent to areas of high leakage potential. If the larger top layered structure extends from one longitudinal end of the article to the other, such side barrier features are desirably placed adjacent to the flap areas of an article. In such side barrier features, the inner edge of the barrier, i.e., the edge of the barrier that is closest to the central longitudinal direction (axis) of the article, is formed from the concave or cut-out portion of a channel or embossed feature. . The inner edge of the barrier is joined to the article by means of the raised channel joint. The outer edge, which also defines the side barrier functionality and is closest to the side edge of the article, is separated from the article along the most lateral edge of the barrier. In one embodiment, the outer edge (most lateral edge of the side barrier) is on the inside of both the side edges and the side edge of the first absorbent core layer in the lower layered structure of the article. Alternatively, the outer edge is approximately aligned or coextensive with the lateralmost edge of the first absorbent core layer of the layered structure lower article. The barrier features produced desirably have height and absorbency, being distinct and separated into selected parts along their length at their most lateral edge, from the underlying layers of the article. The side barrier features, which demonstrate a non-uniform side width dimension, and also, desirably, a non-uniform height dimension along selected parts of the length of the barrier (created in part by the channel position in concave or recessed relief and fixing the ends of the side barrier to the longitudinal ends of the article), results in at least a portion of the absorbent barrier being relatively wide and unbroken where it is most needed, along side areas that must be placed adjacent to a wearer's legs ( the genital region) and next to the article tabs, if any. Such side barrier features may also have a higher elevation in high leakage areas. By placing several concave and elongated embossed channels adjacent to the longitudinal sides of the absorbent layers, the heights and widths of the barrier features can be controlled.
[0033] For the purposes of this application, the term "non-uniform" dimensioned shall at least refer to the dimension of the lateral width of the side barrier feature between the embossed channel or embossed feature defining a side/edge of feature of side barrier (also called the trapped inner edge), and the most lateral edge of the side barrier directly opposite the raised channel or embossed feature (the free edge defines a second barrier side, also called the loose outer edge). The term "non-uniform" dimensioned shall also, in some embodiments, refer to the dimension of the height of the side barrier feature in the depth direction, when measured along the length of the side barrier feature from one end of the article to the other. Such a height measurement should be taken from the highest point of the side barrier feature to the base of the side barrier (above the backing layer of the side barrier feature/or bottom absorbent structure). In other words, the side width dimension is the dimension of the side barrier functionality that is practically perpendicular to the most lateral free edge of the side barrier, as illustrated in the figures. The described non-uniformity refers to the variable width, and in some cases, the variable height dimensions, when measured along the length of the barrier. It is desirable that the free edge described (which will be described as the most lateral edge) be a substantially straight edge for ease of fabrication.
[0034] While a sanitary napkin 10 is illustrated in Figures 113 as a desirable embodiment of the invention, it should be recognized that any number of categories of absorbent article products contemplated within the scope of the invention, such as, for example, incontinence underwear in adults, such as adult incontinence and sanitary napkins, as well as diapers and training diapers for babies and children. As seen in Figure 1, which illustrates a top perspective view of such an absorbent article, a sanitary napkin 10 includes a longitudinal direction L (or axis), a transverse direction T (or axis), and a depth direction D (or axis). axis) parallel to the longitudinal and transverse directions. A central longitudinal (or axis) direction, LC, is also present, in the form of a central transverse direction, Tc, which, respectively, separates the absorbent into two symmetrical halves along the longitudinal direction, and in some cases, depending on the type of material. article, two symmetrical halves along the transverse direction. The sanitary napkin 10 includes two longitudinal ends, they being a first longitudinal end 12, and a second longitudinal end 13, each end having a longitudinal end edge 14. The sanitary napkin (article) 10 also includes side edges 15. The sanitary napkin includes desirably flaps or flaps 16, for securing the pad to the undersurface of the undergarment (not shown), when in use. The wings or flaps tuck under the genital part of an underwear and secure the pad flaps together or directly to the underside of the underwear.
[0035] The sanitary napkin 10 includes at least one, and desirably, a series of embossed channels 11 (or other embossed features) that are visible when viewing the second layer topsheet article 26, surface in contact with the user 27. In the case of the illustrated absorbent 10, the embossed channels include a continuous, flashing, curved, elongated channel having two concave stretches along the longitudinal direction 11A, an arc-shaped external first embossed channel 11B, and a second arc-shaped external raised channel 11C. The continuous raceway-shaped embossed channel 11A includes two concave portions with respect to each side edge 15 of the absorbent (as well as to the most lateral edge 85 of the side barrier 80 to be described). While such concave channels 11A are shown as part of a completely continuous embossing, such concave channels can also be discrete concave arcs 11D as can be seen in FIGURE 1A. Alternatively, such channels may be partially concave, such as in alternating shapes (not shown), or in steps, or in the shape of waves along the longitudinal direction, desirably having at least one prominently deeper concavity (as seen in FIGURE 1C).
[0036] Alternatively, these raised channels may be of a general configuration or partially recessed as recessed straight intersecting lines 11E as seen in Figure 1B, or recessed angled or curvilinear lines 11G as seen in Figure 1C. Each channel illustrated is generally continuous in nature, although they may be separate from the arc-shaped raised channels 11B, 11C, and 11F. A wide variety of features or embossed channels are contemplated for use with the invention, although continuous or discontinuous, concave outwardly curved channels are preferred (as shown with 11A). Such embossments may be continuous channels that have concavities along their length as illustrated in FIGURE 1 (at 11AD) and 1A (at 11D) or alternatively, such concave features may be composed of discrete embossed features or elements that have an overall concave configuration when viewed as a whole along the longitudinal direction of the article, such as dots, dashes, circles, flowers or other shapes arranged in a concave arc configuration, as seen in Figure 9 (at 11H).
[0037] With specific reference to Figure 1, the figure illustrates a perspective view of a sanitary napkin 10 having absorbent side barrier features 80, with non-uniform side width dimensions along the length of the side barrier feature, in accordance with with the invention, and also desirably non-uniform height features (H), also along the length of the side barrier feature. The absorbent side barrier features 80', desirably placed symmetrically, are defined along their transverse direction by the raised or recessed concave channel 11A on a first side (or the inner edge closest to the center of the absorbent and Lc), and a more lateral edge 85 on a second side (or outer edge closest to the longitudinal side edge of the absorbent). As can be seen, the side barrier features 80 are in selected parts, raised and/or not joined to parts (B) to parts of the underlying layers (such as the first topsheet layer 22), and are nailed down. , in selected parts of the underlying layers (A, C along their length) the longitudinal edges of the article 12, 13. The side barrier features 80, while over underlying layers (and, desirably, immediately above a first layer of foil 22, as will be described later) along the depth direction, are desirably absorbent. The side barrier features are high, padded features along the raised portions B of the underlying topsheet layer 22, such as the portion corresponding to the center portion of the absorbent of FIGURE 1. Desirably, these are the portions that are immediately adjacent to the flaps. , or other high leakage areas of an absorbent. The detached parts B need not always be associated with the central part of the absorbent. For example, as can be seen in Figure 9, the protrusions adjacent to the flaps of an overnight sanitary napkin are more closely associated with a longitudinal end 120 of the overnight sanitary napkin than the others. the transverse direction of the overnight sanitary napkin is asymmetrical. The side barrier features 80 may be part of a larger structure extending, in one embodiment, from a longitudinal end 12 of an absorbent to the other end 13. Alternatively, they may be separate structures, with only a portion extending. of the total length of the absorbent, desirably at a distance where the largest non-uniform dimensions of the side barrier features 80 with the most lateral edge separated (greater width and/or height) match the length dimension or are adjacent to the edge areas 15 of the absorbent with a higher probability of leaks. Thus, such side barrier features can be applied to regular, super and extra-long pads. In one embodiment, the most lateral edge of the side barrier features 85 lies within (when viewed along the depth direction) the most lateral edge of the article 15, and the first absorbent core layer 32A of the absorbent underframe. 152. By "inside" is meant closer to the central longitudinal direction Lc than the most lateral edge of the first absorbent core layer 32A. For example, in one embodiment, the transverse width W1 of the second absorbent core layer 30 is desirably smaller than the transverse width W2 of the first absorbent core layer 32. In one embodiment, the proportion of the transverse width of the second layer absorbent core to the transverse width of the first absorbent core layer is about 0.7 to 0.9. In another embodiment, such most lateral edges of the side barrier features 85 are approximately aligned or coextensive with the most lateral edge of the first absorbent core layer 32A, or a portion thereof, if the first absorbent core layer has longitudinal sides. not straight. In some cases, it is contemplated that the shape of the central layers will not be rectangular, but will include rounded side edges.
[0038] As seen in FIGURES 1 and 3, the wearer-contacting top sheet layer 26 includes a wearer-contacting surface 27, on which a wearer-contacting central region surface 27A is positioned between concave embossed channels or embossed features 11A. Desirably, a minimum distance of between 20 and 40 mm separates the concave channels in this central region, alternatively by about 25 and 35 mm. An outer region user-contacting surface 27B is positioned over the side barrier features 80. The side barrier features 80 desirably include an inclined surface 81 (slope) that rises from the concave or recessed raised channels 11A to the most lateral edges of the barrier 85.
[0039] As seen in the figures, and in particular the various exploded cross-sectional views that follow FIGURE 1, the side barrier features 80 include a folded top sheet layer 26 (second top sheet layer) that is folded over and underneath, either an underlying transfer layer 33, an absorbent layer 30, a top layer (not shown) or a combination of such layers. These folded layers make up the topsheet of the absorbent (also known as the topsheet) 150. A concave or recessed relief channel 11A (i.e., a concave or recessed shape when viewed from the surface of the topsheet) extends at least through each one such layer along the depth direction of the absorbent, at a position 40 within, and in some embodiments, adjacent to, the most lateral edge 85 of the side barrier features 80, to thereby create a desirably elevated, outwardly directed structure having a slope 81 towards the most lateral edge 85 of the lateral barrier features 80. Desirably, the concave or recessed channel has the largest area of concavity/recoil between the channel and the most lateral edge adjacent to high leakage areas (flaps) . Desirably, as will be illustrated below, the embossed channel 11A is etched through numerous other layers of absorbent in addition to the second topsheet layer 26 and transfer layers 33 or encapsulated absorbent 30. In such embodiments, the embossed features are pressed deeply into the absorbent, in the depth direction, such that at least two layers are compressed at the positions of the embossed channel 40. In one embodiment, the embossed channel 11A extends through at least three layers, including the second topsheet layer 26, a transfer layer 33, and a second topsheet layer 30. In yet another alternative embodiment, such embossed channels extend in the depth direction through the previously described layers and also the end edges 29A of at least the second folded topsheet layer 26. In yet another alternative embodiment, the raised channels extend through the previously folded second topsheet layer. 26, the transfer layer 33 and the second absorbent core layer 30, but also through two folded layers, such as the folded end edges 29A, (up to 34 not shown) of the transfer layer 33 and a second topsheet layer 26. In yet another alternative embodiment, such raised channels extend even deeper into the absorbent at positions 40 on the absorbent underframe 152 (also known as a backsheet), such as through the first topsheet layer 22, and/or the first absorbent core layer 32. It has been found that the more the raised channels are placed within the absorbent layers, the greater is the slope 81 of the side barrier features 80, resulting in a higher barrier height level H (in the depth direction), in areas with high leakage potential required. See, for example, FIGURE 3. It has also been found that the lateral position of the adhesive 42 (if used), which secures the absorbent upper structure 150 to the absorbent lower structure 152, influences the height (H) of the side barrier features 80. The more lateral the placement of the adhesive 42 along the transverse direction (the closer to the more lateral edges 85 of the side barrier features 80), the lower the height reached in the side barrier features 80 presents. In one embodiment, the position and/or configuration of adhesive 42 is aligned and coextensive with the position of embossed channels 40. For example, such adhesive 42 may not be rectangular in configuration (when viewed from above), instead , may be in the shape of a racetrack or other arc shape, so as to be coextensive with the track or arc shape of the raised channel 11A.
[0040] The lateral barrier features 80 are desirably wider laterally (and/or taller along the depth direction) with parts B immediately adjacent to the flaps 16 so as to provide the most uninterrupted and targeted absorption area (elevation) between the raised channel 11A raised channel and the most lateral edge of opposite barrier 85. The width 86 is measured from a point on the raised channel/feature 11A to the nearest point on the opposite most lateral edge 85. As can be seen in FIGURES 1 and 2, in a desirable embodiment, two side barrier features 80 are desirably symmetrically positioned with respect to the central longitudinal axis Lc adjacent adjacent side faces 15 of the absorbent. While two symmetrically positioned and configured side barrier features 80 are shown, it should be understood that in an alternative embodiment, only one such feature may be present in the article. In another alternative embodiment, depending on design preference, such barrier functionalities may not be visually similar to each longitudinal side edge of an absorbent. Alternatively, depending on the shape of the embossed channel, and attachment to the ends of the article, several raised or wide barrier features may be present along the same length of side barrier. In addition, although the widest and/or tallest parts of the side barrier feature are shown as wider and/or taller around and/or adjacent to the central transverse direction of the absorbent in FIGURES 1 and 2, it need not be the case. For example, as can be seen in FIGURE 9, such wider and/or taller barrier portions 80 of an overnight sanitary napkin are positioned closer to one longitudinal end 120 of the pad 200 than to the other 140.
[0041] The sanitary napkin 10 of FIGURES 1 and 3 also includes a backsheet layer 17, which has a garment contacting surface 18 and a wearer contacting surface 19. Adhesive zones 20, as shown. known in the art for attaching the absorbent to a wearer's underwear, are positioned on the garment contacting surface 18 of the backsheet layer 17. Adhesive covers or release sheets 21, as are known in the art, are placed over the adhesive zones 20 for their protection and preservation before use. A first topsheet layer 22 has a garment-contacting surface 23 and a wearer-contacting surface 24 is desirably sealed to the backsheet layer 17 by a peripheral seal 25. Such a peripheral seal may be made by any means. known method, such adhesive, thermal or ultrasonic bonding methods.
[0042] The first topsheet layer 22 may be a continuous topsheet layer that traverses the complete transverse direction T of the absorbent, as shown in the cross-sectional view of Figures 3, 6 and 11, or alternatively may be present in sections symmetrical discs along the sides of the absorbent and may include a separation opening in a central topsheet region defined by the inner edges of the first topsheet layer 22A, as illustrated in Figures 4, 5, 7 and 8. In another form of In an alternative embodiment, the first topsheet layer may be present only along the periphery of the absorbent, such as in the same general location as the first topsheet layer 22 of Figure 4, but in a configuration that defines a fully encircled central opening ( such as the top plan view and an elongated donut), not including distinct and separate longitudinally directed side sections. Such an alternative is not shown in the figures. This first topsheet layer 22, if a continuous topsheet layer, may be manufactured from two different materials throughout its transverse direction, with a longitudinally centrally directed strip of a first cover material and two longitudinally side covers. directed from a second material. Such a double topsheet layer configuration offers the advantage of having a desired first material at a location along the surface of the topsheet layer, such as, for example, a softer side material for contact with a wearer, and a second material only along the central longitudinal direction of the absorbent, such as a material more "open" for fluid to penetrate an underlying absorbent layer. In any event, such first topsheet layer 22 and backsheet layer 17 intersperse a first absorbent core layer 32, essentially sealing it between the two layers by the peripheral seal 25.
[0043] A second topsheet layer 26, situated above and beside the first topsheet layer 22 along the depth direction, includes a user-contacting second topsheet layer surface 27 having a contact surface with the user's central region user region 27A surface between the concave raised channels 11A, and the surfaces of the outer region in contact with the user 27B. The second topsheet layer 26 includes a garment contacting surface 28, and a folded portion 29 terminating folded ends 29A. The second topsheet layer 26 is wrapped around a second absorbent core layer 30 (having a wearer contacting surface and a garment contacting surface 30A), a fluid transfer layer 33 (having a garment contacting surface 33A), (not shown), or a combination of such layers. As seen in Figure 1, the second topsheet layer 26 is folded over (and with) a transfer layer 33, which is a combination of layers folded together over the lateral edges 30B of a second absorbent core layer 30. Although the fluid transfer layer 33 itself also desirably at least partially surrounds the second absorbent core layer 30 as shown and terminates at the folded ends of the fluid transfer layer 34, it need not encapsulate the entire second layer. of core. The second topsheet layer 26 is wrapped around the transfer layer 33 and the second absorbent core layer 30 being folded around (in the depth direction) the layer 33 and the second absorbent core layer 30 and ends at the folded ends. 29A. The folded layers in one embodiment desirably do not completely enclose the transfer layer 33 and/or the second absorbent core layer 30, as may be the case. In this way, an internal fluid communication channel 35 is created through the gap between the second topsheet layer 26, the folded ends 29A, the gap between the folded ends of the fluid transfer layer 34, and the inner edges of the first layer. topsheet 22A, if present (see Figure 4). Such an inner channel 35 leads to the first absorbent core layer 32 or the first topsheet layer 22, depending on the embodiment. The inner channel serves as a fluid communication path through the interior of the absorbent from the topsheet structure 150 to the backsheet structure 152 in the depth direction. As can be seen in Figure 3, the combination of the second topsheet layer 26, the transfer layer 33 and/or the second absorbent core layer 30 forms the upper structure of the absorbent 150, which in turn constitutes the barrier functionalities. side 80 through the raised channels 11A and the longitudinal end fixtures below.
[0044] Embossed channels 11A, with two concave or recessed side barrier features along the longitudinal direction of the absorbent, are situated on the wearer contact surface and extend through one or more underlying layers at a location 40 which is a desired distance 86 from the most lateral edge of the side barrier feature 85. As can be seen in FIGURES 1 and 1A, the curvature/height of the side barrier features 80 may vary by design. For example, the side barrier features 80 may be more pronounced in one embodiment (as seen in Figure 1), as defined by the basis weight/layer properties within the absorbent upper structure 150 and the design (and placement) of the raised channel. Such pronounced lateral barrier features 80 may appear more significantly elevated above the underlying layers (22) in selected parts (B). For example, in one embodiment, the height range (H) of the side barrier feature 80 in an adjacent position, or even its laterally widest location 87 of part B, can be between about 1 and 12 mm, desirably between about from 4 to 10 mm, more desirably between about 4 and 8 mm, even more desirably about 6 mm. For purposes of this application, height (H) is the measure from the highest vertical point of the side barrier feature 80 (along the depth direction) to the first topsheet layer 22, as measured when the absorbent/ article is in a flat, open condition, and in an uncompressed state (as illustrated in FIGURE 2). In one embodiment, the range range of the lateral barrier functionality 80 or adjacent to the laterally widest location (such as 87) can be between about 6 and 10 mm. Desirably, in one embodiment, the height ratio of the highest point in part B to the height of the final part (A or C) of the upper structure is about 5:1. In one embodiment, the height ratio range is from about 12:1 to 1:1, from highest points to lowest points along the length of the side barrier feature (along the length of the article). Alternatively, it is between about 5:1 to 1:1. The height can be influenced by the thickness of the upper structural layers, the curvature of the embossing, and the placement and configuration of adhesive or other bonding means that secure the upper structure of the absorbent to the lower structure of the absorbent. The end portions (parts A and C) of the upper structure 150, in which the side barrier features are not detached from the underlying layers at the most lateral edge 85, may reach the ends of the product or a position with no ends of the product. See, in this regard, FIGURES 1, 1A and 2. Alternatively, the lateral barrier features 80 may be less pronounced, as seen in FIGURE 1a, and appear to be less significantly elevated above the underlying layers (22) in selected parts. (B).
[0045] As can be seen in the top plan view of FIGURE 2, the most lateral edges 85 of the side barriers 80 are of desirably linear or substantially linear configuration. This is in comparison to the concave embossed channel 11A that forms on the other side of the side barrier features 80. Together these features define a structure that forms an absorbent barrier function, similar to a wall closer to the side edge of the absorbent 15. For part B of the most lateral edge 85 of the side barrier feature 80, along the longitudinal direction, which is adjacent to the concave or recessed part of the raised channel 11A, the side barrier is not attached or otherwise joined to the underlying layer 22 at its most lateral edge 85. This part B is further illustrated by the outlined box 89 shown in FIGURE 2, which highlights the desired areas of the lateral barrier features 80 that are not attached to an underlying layer 22 along the most lateral edge. side 85. This box is presented only to make this part easier to understand. This "visualization" box 89 would not necessarily be present on the pad, as seen by the consumer. However, it is contemplated that in one embodiment, such loose parts of the side barrier functionality 80 parts (B) could be visually distinguished in some way from the remainder of the absorbent for the consumer, such as by means of printing or the inclusion of other visually distinct elements. The entire lateral edge 85 of the side barrier portion contained in this box, or a minor edge portion thereof, can be separated from the underlying layer. Parts of the side barrier features 80 outside this imaginary box, such as parts A and C, are desirably nailed or otherwise joined to the first underlying topsheet layer 22 by embossed channels 11 that extend near the outermost edge. side 85 (of an absorbent upper structure in parts A and C) or adhesive. As a result of the concave embossed channel 11A the lateral width 86 of the loose portion B of the side barrier 80 varies along the length of the absorbent, with greater or lesser widths 87, being desirably positioned towards the center of the absorbent, beside the flaps 16 , and desirably along a central transverse axis Tc. Depending on the embossed channel configuration, the greatest width may be positioned elsewhere along the longitudinal direction of the pad, but desirably an adjacent wing, as seen in FIGURE 9. Desirably, for embossed channels such as the one shown in FIGURE 2, the width measurement between the embossed feature and the most lateral edge 85 is narrower at the end attached to regions A, C, as shown at 88. This is desirable regardless of whether the embossed channel is a continuous channel/feature or discontinuous. By including the channel or embossed feature next to, over, or crossing the most lateral edge of the barrier feature 80, it is possible to attach the most lateral edge to the edge to an underlying layer with the channel embossed if desired. In this way, a simplified process with no extra adhesive can be used to create "free edge or loose edge" barrier functionality.
[0046] In one embodiment, the maximum or widest gaps 87 (distance between a point on the channel 11A and the closest point on the opposite most lateral edge 85) of the side barrier feature 80 is between about 4 and 12 mm, in one embodiment between 4 and 9 mm, in another embodiment, between about 4 and 6 mm. In an alternative embodiment, the maximum width is between about 7 and 12 mm. In another alternative embodiment, the maximum width is between about 7 and 9 mm. In one embodiment, the minimum width of the side barrier between the most lateral edge 85 and the channel 11A, where the concave functionality 88 ends (adopting a straight, convex or terminating configuration) is about 0 to 8 mm. Alternatively, the minimum width of the side barrier feature is between about 0 and 6 mm. In yet another alternative embodiment, the minimum width is in the range of greater than 0 to about 6 mm, yet, alternatively, between about 1 and 2 mm. In yet another alternative embodiment, the ratio of the maximum side width to the minimum side width of the side barrier feature 80 is about 12:1. In another embodiment, the ratio range of maximum side width to minimum side width (i.e., part B of the loose most side edge 85) is from about 12:1 to >1:1.
[0047] It should be recognized that the upper structure of the absorbent may extend the entire length of the absorbent, or some lesser extent along the absorbent. Desirably, the upper structure of the absorbent, which includes secured and loose portions (A, B, C) extends over a substantial length of the absorbent in general, such as in one embodiment, between about 40 and 100 percent, as alternatively, between about 80 and 90 percent. Desirably, the loose portion of the side barrier feature 80 extends to a substantial part of the length of the upper structure in general, and the length of the absorbent in general, as in one embodiment, between about 30 and 100 percent of the structure. (alternatively, between 40 and 60 percent of the structure) or between about 20 and 80 percent of the overall pad length (500), alternatively between about 30 and 60 percent. (See FIGURE 2). In some cases, for absorbents with rounded ends, the upper structure including the side barrier functionality may be at least two different lengths (400, 500) across the transverse direction of the absorbent, based on the external shape of the absorbent. In one embodiment, the portion of the side barrier functionality 80 that is not secured along its most lateral edge 85 is between about 70 and 200 mm, alternatively between about 110 and 130 mm.
[0048] In another alternative embodiment, the total frame parts of the absorbent top frame, which are attached along the most lateral edge 85 to an underlying layer (parts A and C) are between about 20 and 800% of the total length of the mouse, alternatively between about 40 and 70% of the total length of the pad (500). In another alternative embodiment, the total parts of the side barrier functionality 80 that are nailed to an underlying layer (parts A and C) along the most lateral edges 85 are at about 0 and 70% of the length of the structure that contains the side barrier functionality, or alternatively between about 40 and 60%. In another embodiment, those portions of the side barrier features 80 that are attached along the most lateral edge 85 are not equal at the longitudinal end of the absorbent, and in yet another alternative, total between 0 and 100 mm (i.e., a number greater than 0 to 100 mm). Alternatively, the total length of the clamped parts varies from 70 to 90 mm. The width and length dimensions present in this description may be larger or smaller depending on whether the absorbent is of regular (or normal flow), super or extra large (overnight flow or heavy flow) type.
[0049] In yet another alternative embodiment, the total basis weight of the layer or layers contained in the absorbent topsheet 150, excluding the second topsheet layer, is between about 18 and 350 g/m 2 . This total basis weight may, in one embodiment, include the basis weight of any adhesive on the absorbent top structure. Alternatively, the total basis weight of the layer or layers contained in the absorbent topsheet 150, excluding the second topsheet layer, is between about 200 and 250 g/m 2 . In one embodiment, the length of the transfer layer 33 (parallel to Lc), if present, is approximately equal to that of the second topsheet layer 26. In a second embodiment, the length of the transfer layer, if present , is less than the length of the second topsheet layer 26. In another embodiment, the length of the second absorbent core layer 30 is nearly equal to the length of the second topsheet layer 26 and/or the transfer layer 33. Alternatively, the length of the second absorbent core layer 30 is less than that of the second topsheet layer and/or the transfer layer, such as between about 20 and 90% of the length of the absorbent, or alternatively between about 40 to 70% of the length of the absorbent (or alternatively between about 90 and 200 mm, alternatively between about 110 and 150 mm). In another alternative embodiment, the length of the second absorbent core layer 30 is less than that of the first absorbent core layer 32, such as between about 30 and 90% of the first absorbent core layer 32, alternatively between about 50 and 80% of the first absorbent core layer 32. In a particular embodiment, the length of the absorbent 500 is about 230 and 240 mm (for regular size absorbents), the length of the loose part of the side barrier B is is between about 120 and 150 mm, the length of the first absorbent core layer is about 200 to 210 mm, and the length of the second absorbent core layer is about 120 to 150 mm. In one embodiment, the transverse width of the second absorbent core layer 30 (W1) is less than or equal to the transverse width (W2) of the first absorbent core layer 32.
[0050] As can be seen in FIGURE 3, which illustrates an exploded cross-sectional view of the feminine sanitary napkin of FIGURE 2, taken along line 3-3 in the flap area, the side barrier features 80 are formed from the frame topsheet of the absorbent 150, which is nailed to the folded backsheet of the topsheet 29, either by adhesive 42 or other means of bonding with the wearer-contacting surface 24 of the first layer of topsheet 22 (of the absorbent underframe 152) . This union is desirably symmetrical with respect to the central longitudinal direction (axis Lc). Other joining means can be made by ultrasonic joining techniques. Such joining may be continuous or discontinuous (at least along the longitudinal direction of the absorbent), such as, for example, through adhesive strips extending the full length of the absorbent, and optionally in the transverse direction, especially where there is a complete attachment of side barrier features 80 (in parts A and C). Alternatively, such joining may be discontinuous, for example by discontinuous strips of adhesive material, or along the longitudinal and/or transverse direction where appropriate.
[0051] The height H of the absorbent upper structure 150, in one embodiment, may vary along the length of the side barrier feature 80, with the greatest height dimension desirably present or adjacent to the area of the flaps (as in part B). Therefore, in one embodiment, the side barrier feature 80 demonstrates a variable width along its length. In a second embodiment, the functionality of the side barrier 80 demonstrates a variable height along its length. In a third embodiment, the side barrier functionality (or functionalities) varies in width and height along its length (along the longitudinal direction of the absorbent). The variable width and height result from attaching the side barrier feature along different parts of the length of the absorbent, as well as placing embossed channel recesses/indentations along or adjacent to the length of the feature.
[0052] The second topsheet layer 26, alone or together with a transfer layer 33, is desirably partially folded along the depth direction, so that the ends 29A and 34 of the second topsheet layer 26 and transfer layer 33 (if present) surround a void 43 (as seen in FIGURES 6, 7 and 8), or alternatively, side edges 30B of a second absorbent core layer 30 (as seen in FIGURES 3, 4 and 5). The second rolled topsheet layer 26 and transfer layer 33 may be approximately coextensive along the transverse direction, as shown in FIGURES 5 and 8, or non-coextensive, as illustrated in other cross-sectional views. The concave or recessed channels or other embossed features as shown in 11A, 11D, 11F, 11G (concave or recessed in relation to the side edges of the absorbent 15) are placed on the wearer contact surface 27 of the second layer of topsheet and penetrate at locations 40 so as to compress two or more layers of the absorbent. Essentially, the embossed channels or embossed features extend downwards (along the depth direction of the article) through two or more layers within the article.
[0053] As can be seen in the exploded cross-sectional view of FIGURE 3A, taken along line 3A-3A of FIGURE 2, the absorbent top structure 150 is fully nailed to the underlying layer (the first topsheet layer 22) of the structure. bottom of absorbent 152 at part C (and A). In this part, desirably there is little free lateral barrier edge 85, since the structure is joined by the raised channel 11 at or immediately adjacent to the most lateral edge 85, which secures this edge to an underlying layer (such as 22). Alternatively, as shown in the figure, the adhesive layer 42 may optionally extend further along the transverse direction only in this end zone (parts A and C) to secure the understructures of the absorbent. Other known joining techniques are also contemplated for use on these parts A and C to achieve this attachment. In the gripped portions (A and C) of the pads, there is little physical separation (along the continuous lateral edge 85) between the upper structure and the lower structure.
[0054] An exploded cross-sectional view (approximately in the same transverse direction/location near the flaps of a sanitary napkin) of an alternative feminine sanitary napkin embodiment is illustrated in Figure 4. While FIGURE 3 illustrates a first layer of sanitary napkin. topsheet 22 running continuously in the transverse direction of the absorbent, Figure 4 illustrates a non-continuous first topsheet layer 22 having inner edges of the first topsheet layer 22A. In the embodiment of FIGURE 4, the channel 35 between the upper absorbent structure 150 and the lower absorbent structure 152 provides direct fluid communication with the first absorbent core layer 32 of the second absorbent core layer 30. Adhesive 42 bonds together the second topsheet layer 29A to the inner ends 22A of the first topsheet layer 22, without blocking the fluidic communication channel 35. The exploded cross-sectional view (taken in approximately the same position) of another alternative application of feminine sanitary napkin is illustrated in FIGURE 5. As can be seen in this figure, the topsheet layer 26 and the second transfer layer 33 are of approximately the same length, having ends 29A, 34 that terminate at approximately the same location in the transverse direction (but along the of different depth direction planes). In this alternative embodiment, instead of being separate individual flat strips as seen in Figure 4, the strips of the first topsheet layer 22 include inner bent ends 50, where the inner bent ends extend away from the center of the absorbent. towards the most lateral edges of the side barrier feature 85. Such folds provide additional volume that enhances the tall nature of the side barrier features 80. Additional advantages of the folded inner ends of the first topsheet layer include larger fluidic communication channels between the absorbent materials of the upper structure of the absorbent and the absorbent materials of the lower structure of the absorbent. In such an embodiment in FIGURE 5, the position of the raised channels 40 is located such that they do not pinch the inner bent ends 50, but are located more inwardly along the transverse direction of the absorbent (more toward Lc) , compressing the first absorbent core layer 32. The inner folded ends 50 are directed outwardly, opposite the central longitudinal direction Lc. Alternatively, embossed channels can reach the creases depending on the intended width of the side barrier features.
[0055] An exploded cross-sectional view of another embodiment of a feminine sanitary napkin is illustrated in FIGURE 6, taken again, in approximately the same transverse direction near the flap area. As can be seen in the figure, there is no second absorbent core layer adjacent to the garment contacting surface 33A of the transfer layer 33 present in the absorbent topsheet 150. In contrast, the second topsheet layer 26 and the transfer layer 33 are folded together in the depth direction with the ends of the second topsheet layer 29A extending beyond the ends of the transfer layer 34 with respect to the central longitudinal direction of the absorbent. The folded layers surround a void 43, which is compressed such that the interior surfaces of neighboring layers touch (but shown otherwise in the exploded view). The Fig. topsheet 26 in two vertically separated locations, as well as through the transfer layer 33 in one location, the first topsheet layer 22 and the first absorbent core layer 32.
[0056] An exploded cross-sectional view of another embodiment of a feminine sanitary napkin is illustrated in FIGURE 7, taken again, in approximately the same transverse direction near the flap area. The figure illustrates a first separated topsheet layer 22 having inner ends 22A. The position 40 of the embossment 11 is shown through the second topsheet layer 26 at two vertically separated locations, as well as through the transfer layer 33 at one location, the separate inner ends of the first topsheet layer 22A and the first absorbent core layer 32.
[0057] An exploded cross-sectional view of an alternate embodiment of a feminine sanitary napkin is illustrated in FIGURE 8, taken again in approximately the same transverse direction near the flap areas. The figure illustrates a separate first topsheet layer 22 having inner bent ends 50. The position 40 of the embossment 11 is shown through the second topsheet layer 26 at one location, as well as through the transfer layer 33 and the first top sheet layer 32.
[0058] As noted earlier, an alternative embodiment of the feminine sanitary napkin of FIGURE 1 is shown in FIGURE 9 in the form of an overnight feminine sanitary napkin 200. Overnight sanitary napkins are often used by consumers during sleeping hours or during days off. of heavy menstrual cycle. As illustrated in the figure, such overnight sanitary napkins include asymmetrical shapes, where a first end 120 includes a different outer shape from a second end 140. In the case of the illustrated embodiment, the overnight sanitary napkin 200 includes an upper body structure. absorbent (as seen in FIGURES 10, 11 and 11A) that does not run the full length of the general absorbent. Rather, the absorbent upper structure 150 includes side barrier features 80 that are 1) attached to one end of the article, 2) released from the underlying layers along the most lateral edge 85, and 3) released at a longitudinal end 100. which terminates in a trailing trailing edge 112 which is also free from underlying layers in a trailing region 115, such as at positions behind an arc-shaped embossed channel 11. The small arc-shaped embossed channel 11 acts to retain the beginning of the tail region to the underlying layer(s). In such an overhanging loose tail region 115, it is desirable that the upper structure of the absorbent be free of a second absorbent core layer in the overhanging tail, and include only a second topsheet layer and a transfer layer in this tail region. A layer of adhesive secures the layers within the absorbent topsheet 150 in that region 115, but not the tail itself to the first underlying topsheet layer 22. In such an embodiment, a second absorbent core layer may or may not be present. in the upper structure of the absorbent 150, closer to a first end 120. Additional embossed channels 110 are desirably located more laterally than the most lateral edges 85 of the side barrier features 80. Such additional embossed channels 110 are located over the first topsheet layer 22 and, optionally, underlying layers of the absorbent understructure 152 in the depth direction of the absorbent 200. In alternative embodiments, the elastic and/or retractable fibers may be positioned within or adjacent to the second layer of topsheet 26, such as along the tail-like extent of the second layer of topsheet 115, of so as to keep the tail in an elevated position when soiling.
[0059] As noted for sanitary napkins, such as e.g. overnight sanitary napkin and extra-long pads/articles, attachment regions A and C of the upper structure that includes the side barrier features 80 along its length may be 1 ) at both ends of the article if the upper structure runs the entire length of the absorbent, 2) only at one end and also at a central location along the length of the absorbent, or 3) at positions substantially inward from the outer edges of the absorbent. absorbent, more towards the center of the absorbent (especially if the side barrier features are short, discrete structures that do not belong to higher structures that run the full length of the absorbent).
[0060] In still other alternative embodiments, the second topsheet layer 26 and the other folded layers of the topsheet 150 may completely surround a void or absorbent core layer, or alternatively be folded into a "" Inverted S" or "S" 151 along the transverse direction so as to also become the first top sheet layer when folded toward the inward side edges of the bottom frame 152, as seen in FIGURE 12. The actual folds of the second top sheet layer 26A can be positioned away from the position of the embossed channels 11 towards the side edges of the product (as shown), or alternatively can be positioned in the path of the embossed channel so that they are embossed. with the layers of the upper structure. If the second topsheet layer 26 completely surrounds the absorbent topsheets (not shown), the lower portions of the second topsheet layer 26 may be perforated to allow faster fluidic communication to the absorbent backsheet 152 if such a structure bottom of the absorbent includes a first absorbent core layer. Such an absorbent bottom structure, alternatively, cannot include a first absorbent core layer structure, as seen in FIGURE 12.
[0061] In yet another alternative embodiment of the sanitary napkin 10 in FIGURE 13, a pad includes a continuous raised channel 11 adjacent the periphery of the pad, and specifically over the pad layers 30, 32. As seen in the figure, the concave portions of the raised channel 11A along the longitudinal direction of the absorbent provide an inner side edge, which together with the most lateral edge 85 define the raised part of the lateral barrier features adjacent to the absorbent flaps 16. The raised channel 11 is positioned such that it approaches the edge of the absorbent on all sides 11Q, towards the longitudinal edges, such that the larger structure including the side barrier features are nailed to at least those side embossed features 11Q. Additional adhesive can also be placed under the top sheet layer for additional fixation in these areas.
[0062] Materials for use in the various layers of the absorbent/absorbent article structure
[0063] The first and second topsheet layers can be made of single layer materials or alternatively multiple laminated layers. Such topsheet first and second layer materials may be formed from a number of materials known in the art, such as, for example, one or more fibrous non-woven sheets, which may themselves be single layered or multilayered, single or multilayered. more sheets of foam, such as cross-linked foams, open-cell or closed-cell foams, one or more sheets of fabric, a coated non-woven sheet, or a combination of any of the aforementioned materials. Such a combination can be made by adhesive, thermal or ultrasonic lamination into a unified flat sheet structure.
[0064] The first and second topsheet layers act to receive and absorb fluids, such as urine or menstruation, and therefore comprise a liquid permeable material as noted. Additionally, the materials of the first and second topsheet layers can also help to insulate the wearer's skin from fluids held in an underlying absorbent layer of an absorbent article. One or more chemical treatments may also be applied to one or both of the materials of the first or second topsheet layer to improve fluid movement through the topsheet layers and into the article. Suitable topsheet layer materials include, but are not limited to, those described in US Patent Nos. 4,397,644 to Matthews et al.; 4,629,643 to Curro et al.; 5,188,625 to Van Iten et al.; 5,382,400 to Pike et al.; 5,533,991 to Kirby et al.; 6,410,823 to Daley et al. and United States Publication 2012/0289917 to Abuto et al., each of which is incorporated herein by reference in its entirety.
[0065] In a desirable embodiment, the materials of the first and second topsheet layers can be made of any woven or non-woven material that passes body fluids but still remains comfortable for the wearer. Suitable non-woven materials include, but are not limited to, spunlace hydroentangled materials, bonded carded fabrics (BCW) made from fibers and spunbond fabrics. The basis weight of non-woven wefts can generally range from about 5 grams per square meter (g/m2 - "grams per square meter") to 150 g/m2, in some applications from about 10 gsm to about 125 g /m2, and in some applications from about 25 g/m2 to about 120 g/m2. As used herein, the term "spunbond weft" generally refers to a web containing continuous fibers of substantially small diameter. The fibers are formed by extrusion of a molten thermoplastic material from a plurality of fine, generally circular capillaries with the diameter of the extruded fibers being then rapidly shrunk as through, for example, tensile extrusion and/or other well-known mechanisms of continuous bonding after extrusion. The production of spunbond wefts is described and illustrated, for example, in US Patent Nos. 4,340,563 to Appel, et al., 3,692,618 to Dorschner, et al., 3,802,817 to Matsuki, et al. ., 3,338,992 for Kinney, 3,341,394 for Kinney, 3,502,763 for Hartman, 3,502,538 for Levi, 3,542,615 for Dobo, et al., and 5,382,400 for Pike, et al., which are here incorporated in their entirety for reference for all purposes. Continuous bonding fibers after extrusion are generally non-sticky when deposited on a collecting surface. Continuously bonded fibers after extrusion can sometimes have diameters less than about 40 microns and often between about 5 to about 20 microns. Examples of suitable topsheet materials include rayon (synthetic silk), welded carded fabrics of polyester, polypropylene, polyethylene, nylon or other heat-bondable fibers, polyolefins, copolymers of polypropylene and polyethylene, linear low density polyethylene, and aliphatic esters such as the polylactic acid. Other materials suitable for the topsheet layer include airflow bonded carded wefts (TABCW) made from standard length fibers, such as a 25 grams per square meter (gsm) weft made from 1.5 denier (d ), polyethylene cladding, two-component polypropylene core, 35 to 40 millimeters (mm) standard length fibers available from FiberVisions Corporation, based in Duluth, Georgia, USA, which are available under the tradename ESC215.
[0066] The materials of the first and second topsheet layers can also be made of two or more different non-woven or film materials, with the different materials placed at separate locations laterally across the topsheet layer. For example, the first topsheet layer 22 can be made of a two-layer or multi-component material with a center section positioned along and spanning the longitudinal direction of the product, with side cover sections flanking and joining each side ( or side edge) of the center section. The central part can be made, for example, of the above-mentioned TABCW materials or of a perforated film. The side sections may be made of a different non-woven fibrous material, which is joined to the longitudinally directed center section. This two-layer configuration (also known as double coating) is described, for example, in U.S. Patent Nos. 5,961,505 to Coe, Patent No. 5,415,640 to Kirby and Patent No. 6,117,523 to Sugahara, each of which is incorporated herein by reference in their entirety. Such a two-ply topsheet material (or bicomponent topsheet) could offer a dry feel along the longitudinally directed center section, and a soft feel along the longitudinally directed side sections. It is also contemplated that the topsheet materials may additionally include elastic or retractable members to lift portions of the material during use. Although not illustrated, the first and second topsheet layers may be perforated to allow more rapid penetration of body fluids into the absorbent article.
[0067] As noted, the backsheet layer 17 or outer covering functions to isolate absorbed fluids from contacting the wearer's clothing or bedding, and thus, desirably comprises a liquid impervious material. In one aspect, the backsheet layer 17 may optionally comprise a material which prevents the passage of liquids, but allows air and water vapor to pass therethrough. The backsheet layer may comprise a single layer or multiple layers, and these one or more layers may include similar or different materials. Suitable backsheet layer materials include, but are not limited to, polyolefin films, non-woven and non-woven laminates, and non-woven film/laminates. The particular structure and composition of the backsheet layer 17 can be selected from a variety of known films and/or fabrics with the particular material being selected as appropriate, to provide the desired level of liquid barrier, strength, abrasion resistance, tactile properties, aesthetics, etc. Suitable backsheet layer materials include, but are not limited to, those described in US Patent Nos. 4,578,069 to Whitehead et al.; 4,376,799 to Tusim et al.; 5,695,849 to Shawyer et al.; 6,075,179 to McCormack et al. and 6,376,095 to Cheung et al., each of which is incorporated herein by reference in its entirety.
[0068] Between the first liquid pervious topsheet layer 22 and the liquid impervious backsheet layer (outer cover) 17, at least one first topsheet layer 32 is positioned. For example, as illustrated, the absorbent includes an absorbent core layer 32. The absorbent core layer functions to absorb and preferably "trap" and retain bodily fluids that pass into the absorbent article through the first and second topsheet layers. The first absorbent core layer 32 may comprise a single layer or multiple layers, and these one or more layers may include similar or different materials. In order to efficiently and effectively utilize the absorbent capacity of the article, it is common for the absorbent structure to include one or more peak layers, liquid distribution layers or drainage layers in combination with a highly absorbent core layer that preferentially absorbs and retains the liquids. Suitable drainage layers include, but are not limited to, bonded-carded wefts, hydroentangled non-woven wefts, or spunbond wefts containing treated fibers or containing one or more topical agents that improve the contact angle with body fluid and/or modify properties. of fluidity of the body fluid. Highly absorbent core layers generally include, but are not limited to, wefts or webs that contain cellulose fiber, superabsorbent particles (also known as SAP or SAM), synthetic cellulose fibers, synthetic fibers, and combinations thereof. The absorbent core layer 32 may comprise any number of materials and structures, the particular selection of which will vary depending upon desired load carrying capacity, flexibility, body fluid to be absorbed and other factors known to those skilled in the art. By way of example, suitable materials and/or structures for the absorbent core layer include, but are not limited to, those described in US Patent Nos. 4,610,678 to Weisman et al.; 6,060,636 to Yahiaoui et al.; 6,610,903 to Latimer et al.; 7,358,282 to Krueger et al. and United States Patent Publication 20100174260 to Di Luccio et al., each of which is incorporated herein by reference in its entirety.
[0069] The shape of the first absorbent core layer 32 can be varied as desired and can comprise any of several shapes, including, but not limited to, generally triangular, rectangular, bone-shaped, and elliptical shapes. In one embodiment, the absorbent core layer 32 is shaped generally corresponding to the overall shape of the sanitary napkin 10, 200 such that the first absorbent core layer 32 terminates near the peripheral seal region 25 and the flaps 16. The dimensions of the first absorbent core layer 32 can be substantially similar to the sanitary napkin 10, 200; however, it will be appreciated that the dimensions of the absorbent core layer 32, while similar, will often be somewhat smaller than those of the sanitary pad 10, 200, in order to be properly contained therein, and desirably sealed around the edges. . As indicated above, the absorbent core layer 32 is positioned between the first topsheet layer 22 and the backsheet layer 17, which makes up the absorbent backsheet 152.
[0070] As also noted, the absorbent 10, 200 includes an absorbent topsheet 150 including a second topsheet layer 26. The second topsheet layer folds over a transfer layer 33, a second absorbent core layer 30, another raised layer, or a combination thereof. Such a transfer layer may be made of a high layer such as, for example, a material produced by airflow, as is known in the art. In one embodiment, such airflow produced material has a thickness of between 1 and 2 mm, and demonstrates a basis weight of between about 50 and 100 g/m 2 and a density desirably of about 50 kg/m 3 . In an alternative embodiment, the top structure of the absorbent includes an absorbent core layer that is at least made of fluff material. In one embodiment, the pile layer has a thickness of between about 4 and 6 mm, a basis weight of between about 175 and 300 g/m 2 and a density of between about 43 and 75 kg/m 3 .
[0071] The individual layers constituting the absorbent/article may be bonded together using means known in the art, such as adhesive, heat/pressure bonding, ultrasonic bonding and other suitable mechanical bonds. Commercially available construction adhesives usable in the present invention include, for example, Rextac adhesives available from Huntsman Polymers of Houston, Texas, as well as adhesives available from Bostik Findley, Inc., of Wauwatosa, Wisconsin. In one embodiment, the first absorbent core layer 32 may be sealed between the first topsheet layer 22 and the backsheet layer 17 along the perimeter of the first absorbent core layer 32 along the seal region 25 formed by applying heat and pressure to melt the thermoplastic polymers located in the first topsheet layer 22 and/or the backsheet layer 17.
[0072] The flaps 16 can be made of the materials described above, with respect to the top sheet layer and back sheet layer. In one embodiment, the flaps may comprise an extension of a layer of material within the topsheet layer and/or the backsheet layer. By way of example, the flaps 16 may be formed by an extension of the topsheet layer and backsheet layer 17 which are joined along the sealing region 25. Such flaps may be formed integrally with the main part of the absorbent article. Alternatively, the flaps may be independently formed and separately attached to an intermediate section of the article. Flaps made from other components of the absorbent article may be welded or adhesive bonded to a portion of the topsheet layer and/or backsheet layer. Furthermore, as is known in the art, when cutting materials into the desired shape, it is preferable to arrange the components so as to minimize waste. Examples of methods for making absorbent articles and flaps include, but are not limited to, those described in US Patent Nos. 4,059,114 to Richards.; 4,862,574 to Hassim et al., 5,342,647 to Heindel et al., 7,070,672 to Alcantara et al., international publication WO1997040804 to Emenaker et al., and US patent publication 20040040650 to Venturino et al. , each of which are incorporated herein by reference in their entirety.
[0073] As noted, in order to further assist with maintaining the feminine sanitary napkin 10, 200 in the desired location on the underwear, zones of garment adhesive may be applied to the garment contacting side of the underwear layer. backsheet 17. The use of garment adhesive on the backsheet to assist in securely placing an absorbent article on the garment is well known in the art and there are numerous adhesive patterns and release strips suitable for use with the present invention. Examples of suitable garment adhesives, patterns and release sheets include, but are not limited to, those described in DE700225U1; US Patent Nos. 3,881,490 to Whitehead et al.; 3,913,580 Ginocchio; 4,337,772 to Roeder et al.; GB1349962; and United States patent publication 20070073255A1 to Thomas et al., each of which are incorporated herein by reference in their entirety.
[0074] The feminine sanitary absorbent/absorbent articles of the present invention may further include one or more components or elements as desired. By way of example, the absorbent article may optionally include slits, voids or uncoordinated embossments in the topsheet layer, inner layers and/or absorbent core layer, in order to improve fluid absorption, liquid distribution, stiffness (flexural strength) and/or aesthetic appeal. Examples of suitable additional embossing patterns and embossing methods such as embossing/concave indentations include, but are not limited to, those described in US Patent Nos. 4,781,710 to Megison et al.; 7,686,790 to Rasmussen et al., EP0769284A1 to Mizutani et al.; and United States publication 20050182374 to Zander et al., each of which are incorporated herein by reference in their entirety.
[0075] The absorbent articles of personal hygiene may optionally contain one or more additional elements or components as are known and used in the art, including, but not limited to the use of fold lines, individual wrappers, elastic flaps that extend above the plane of the backsheet layer in use, additional independent tabs such as over the edges, odor control agents, perfumes, and the use ink printing on one or more surfaces of the topsheet layer, backsheet layer, tabs , internally located layers and/or absorbent core layer. In addition, other additional features and various constructs are known in the art.
[0076] Absorbents including the side barrier features 80, may be manufactured by placing a folded top layered structure 150 over a bottom layered structure 152, and then selectively joining/embossing areas of the absorbent in order to create side barriers that are raised, without using polymeric threads or expensive additional side layers. By including 80 side barrier features in articles, a tall, padded structure is created that provides specific side barrier protection adjacent to areas of high leakage potential. The 80 side barrier functionality also includes parallel side edges (like 11A and 85) that better fit a wearer's thighs.
[0077] While the invention has been described in detail with respect to specific representations, it will be apparent to those skilled in the art that various alterations, modifications and other alterations may be made to the invention without departing from the spirit and scope thereof. Therefore, the claims are intended to encompass all such modifications, alterations and other changes.

权利要求:
Claims (23)
[0001]
1. Absorbent article (10) having variable dimensioned side barrier (80) functionalities, the absorbent article being characterized in that it includes a longitudinal direction (L), a transverse direction (T) and a depth direction, and having side edges ( 15) longitudinally directed and longitudinal ends (12, 13) comprising: a lower frame (152) with longitudinally directed side edges (15), said lower frame (152) including a backsheet layer (17), a first layer of fluid permeable topsheet (22) joined to the backsheet layer (17), and a first absorbent core layer (32) sandwiched between the fluid permeable first topsheet layer (22) and the backsheet layer (17). ), the first absorbent core layer (32) having more lateral edges, an upper structure (150) in fluid communication with the lower structure (152), said upper structure (150) adjacent and joined to the structure backsheet (152) over the first fluid-permeable topsheet layer (22), and includes a second fluid-permeable topsheet layer (26) and at least one additional absorbent layer selected from a group consisting of a layer transfer pad (33), a second absorbent core layer (30), and a topsheet, wherein the second fluid-permeable topsheet layer (26) is folded over at least one additional layer to create more lateral edges of fabric functionality. side barrier (85) substantially straight, such laterally most edges of side barrier functionality (85) being within the most lateral edges of the first absorbent core layer (32A), the upper frame (150) joined to the lower frame (152) at the most lateral edges of lateral barrier functionality (85), and at least at one of the longitudinal ends (12, 13) of the article (10), wherein said upper structure (150) includes raised channels (11) or functional embossed features that extend in the longitudinal (L) direction of said article (10) and, when the article (10) is viewed in a top plan view, the embossed channels or features (11A) have a concave curved configuration in the transverse (T) of the absorbent article (10) with respect to said substantially straight side barrier feature (85) most lateral edges, and said embossed channels (11) or embossed features (11A) are within at least two layers of said upper structure (150) of said article, such concave embossed channels or features (11A) and the most lateral edges of side barrier functionality (85) define the side barrier features (80) of the absorbent article (10), wherein said side barrier features (80) have variable side width dimensions when the side width dimensions of side barrier features (80) are measured between said concave embossed channels or features (11) A) and said most lateral edges of side barrier functionality (85) substantially straight along the longitudinal direction (L) of the article (10), or a combination of variable side width and height dimensions along the longitudinal direction (L) of article (10), wherein said side barrier features (80) are separable from, and elevated above, said lower frame (152) along a portion of said most lateral edges of side barrier feature (85) corresponding to the said variable width dimension, allowing said lateral barrier features (80) to be fitted to the inner thighs of a wearer of the article (10), as a result of said variable lateral width dimensions, the absorbent article (10) further comprising flaps (16) extending laterally along longitudinally directed side edges (15) of the article (10), wherein said concave embossed channels or features (11A) are concave in the transverse direction. (T) of the absorbent article (10) with respect to said lateral barrier edges (85) adjacent to said flaps (16).
[0002]
2. An absorbent article (10) according to claim 1, characterized in that the topsheet (150) includes a second fluid permeable topsheet layer (26) and a transfer layer (33) underlying the second layer. of fluid permeable topsheet (26).
[0003]
3. An absorbent article (10) according to claim 2, characterized in that the upper structure (150) includes a second absorbent core layer (30) underlying the transfer layer (33).
[0004]
4. An absorbent article (10) as claimed in claim 1, wherein the topsheet (150) includes a second fluid permeable topsheet layer (26) and a second absorbent core layer (30) underlying the second fluid permeable top sheet layer (26).
[0005]
5. Absorbent article (10) according to claim 1, characterized in that the raised channels (11) comprise continuous concave channels (11A) separated by a minimum distance of 20 to 40 mm.
[0006]
6. Absorbent article (10) according to claim 1, characterized in that the side barrier features (80) have a side width range between a value greater than 0 to 12 mm, and where the longest side width wide is positioned adjacent to said flaps (16).
[0007]
7. Absorbent article (10) according to claim 6, characterized in that the lateral barrier features (80) have a lateral width between 6 and 10 mm in at least one location along the longitudinal direction (L) of the article (10).
[0008]
8. Absorbent article (10) according to claim 6, characterized in that the side barrier features (80) have a height range between 1 and 12 mm along the longitudinal direction (L) of the article (10) , and wherein the greatest height of side barrier is positioned adjacent the flaps (16).
[0009]
9. Absorbent article (10) according to claim 6, characterized in that the side barrier features (80) are positioned closer to one longitudinal end (12, 13) than the other longitudinal end (12, 13) ).
[0010]
10. An absorbent article (10) according to claim 6, characterized in that the raised channels or raised features (11A) extend downwards through at least three layers within the article (10).
[0011]
11. An absorbent article (10) according to claim 10, characterized in that the raised channels or raised features (11A) extend downwardly through at least four layers within the article (10).
[0012]
12. An absorbent article (10) according to claim 1, characterized in that the first fluid-permeable topsheet layer (22) is discontinuous along the transverse direction (T).
[0013]
13. An absorbent article (10) according to claim 1, characterized in that the topsheet (150) having a basis weight of all layers, excluding the second fluid permeable topsheet layer (26), between 18 and 350 g/m 2 .
[0014]
14. An absorbent article (10) according to claim 1, characterized in that the second fluid-permeable topsheet layer (26) partially surrounds the additional absorbent layer (or layers).
[0015]
15. Absorbent article (10) according to claim 14, characterized in that the side barrier features (80) are exempt from joining with the lower frame (152) along the most lateral edges of the side barrier feature ( 85), for a length between 110 and 130 mm of said side barrier features (80).
[0016]
16. An absorbent article (10) according to claim 1, characterized in that the upper structure (150) includes a second absorbent core layer (30), and the second absorbent core layer (30) has a width at transverse direction (T) of the second absorbent core layer (30), the first absorbent core layer (32A) has a transverse width of the first absorbent core layer (32A), and the proportion of the transverse width of the second absorbent core layer (30) for the transverse width of the first absorbent core layer (32A) is 0.7 to 0.9.
[0017]
17. Absorbent article (10) according to claim 1, characterized in that the lateral barrier features (80) of said upper structure (150) are exempt from joining with the lower structure (152) along the longer edges side barrier features (85), for a length between 70 and 200 mm of the side barrier features (80).
[0018]
18. Absorbent article (10) according to claim 16, characterized in that the side barrier features (80) demonstrate a variable lateral width dimension and variable lateral height along the longitudinal direction (L) of the article (10) ).
[0019]
19. An absorbent article (10) according to claim 1, characterized in that the article includes a central longitudinal direction (Lc) and the side barrier features are symmetrically positioned in the central longitudinal direction (Lc) of the article (10) .
[0020]
An absorbent article (10) according to claim 1, characterized in that it includes side barrier features (80) closer to one longitudinal end (12, 13) than the other longitudinal end (12, 13).
[0021]
21. Absorbent article (10) according to claim 1, characterized in that the side barrier features (80) are visually highlighted by means of printing.
[0022]
22. Absorbent article (10) according to claim 1, characterized in that the upper structure (150) is joined to the lower structure (152) at the most lateral edges of side barrier functionality (85), at both ends longitudinal (12, 13) of article (10).
[0023]
23. Absorbent article (10) according to claim 1, characterized in that the upper structure (150) is joined to the lower structure (152) at the most lateral edges of side barrier functionality (85), at one end (12, 13) of the article (10) and also in a position substantially within the other longitudinal end (12, 13) of the article (10), in a position oriented towards the center of the absorbent.

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同族专利:

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WO2017187778A1|2017-02-28|2017-11-02|ユニ・チャーム株式会社|Method for manufacturing absorbent article|

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CN107635518B|2017-02-28|2019-01-01|尤妮佳股份有限公司|The manufacturing method of absorbent commodity|

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法律状态:
2018-11-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2020-01-14| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2021-07-13| B350| Update of information on the portal [chapter 15.35 patent gazette]|

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2021-08-17| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]|

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2021-12-07| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2022-01-25| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 27/05/2014, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US201361829620P| true| 2013-05-31|2013-05-31|

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US61/829,620|2013-05-31|

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US14/279,034|US9675498B2|2013-05-31|2014-05-15|Absorbent article with non-uniform dimensioned side barriers|

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US14/279,034|2014-05-15|

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PCT/IB2014/061758|WO2014191921A1|2013-05-31|2014-05-27|Absorbent article with non-uniform dimensioned side barriers|

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