Absorbent articles

Abstract

The present invention provides an absorbent article equipped with a pair of three-dimensional gathered sections that suppresses lateral leakage and reduces skin problems. [Solution] The absorbent article 1 comprises an absorbent body 4, a top sheet 2, a back sheet 3, a nonwoven fabric 7, and a pair of three-dimensional gathered sections 10 including a liquid-impermeable film member 9. The first widthwise portion 10a of the three-dimensional gathered section 10 is joined to the ends of the top sheet 2, absorbent body 4, and / or back sheet 3 in the widthwise direction W, and the end of this portion on the second widthwise portion 10b side is designated as a fixed end FX. The second widthwise portion 10b of the three-dimensional gathered section 10 includes an elastic member 8, and the edge opposite to the first widthwise portion 10a in the widthwise direction W is designated as a free end FR. In the widthwise direction W, the nonwoven fabric 7 extends from the first widthwise portion 10a to the second widthwise portion 10b, and the film member 9 overlaps the non-skin side of the nonwoven fabric 7, is joined to the nonwoven fabric 7, and extends from the first widthwise portion 10a to just before the elastic member 8 in the second widthwise portion 10b.

Description

Technical Field

[0001] The present invention relates to absorbent articles.

Background Art

[0002] As a sheet forming a pair of three-dimensional gather portions, an absorbent article using a film member in addition to a nonwoven fabric is known. For example, Patent Document 1 discloses a disposable diaper having the following features. The disposable diaper includes a back sheet having air permeability and liquid impermeability, a top sheet having air permeability and liquid permeability, a multilayer sheet material in which a first sheet material having air permeability and liquid permeability and a second sheet material having liquid impermeability are joined, a pair of three-dimensional gather sheets provided opposite to each other, and an absorber having liquid absorption property interposed between the back sheet and the top sheet. The back sheet has a narrow back sheet portion and a pair of back sheet extension portions extending on both sides in the width direction from the narrow back sheet portion. The pair of three-dimensional gather sheets each have a narrow three-dimensional gather sheet portion and a three-dimensional gather sheet extension portion extending on one side in the width direction from the narrow three-dimensional gather sheet portion. The absorber has an absorber narrow portion and a pair of absorber extension portions extending on both sides in the width direction from the absorber narrow portion. Each back sheet extension portion, each three-dimensional gather sheet extension portion, and each absorber extension portion extend in the width direction more than the top sheet. Each absorber extension portion is interposed between each back sheet extension portion and the extension portion of each three-dimensional gather sheet. A pair of side flap portions are formed in a region near one end in the longitudinal direction by each back sheet extension portion, each three-dimensional gather sheet extension portion, and each absorber extension portion. The second sheet material having liquid impermeability of each three-dimensional gather sheet is joined to the back sheet at the side flap portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

[0004] In the absorbent article described in Patent Document 1, a multilayer sheet material is used in which a first sheet material having breathability and liquid permeability and a second sheet material having liquid impermeability are joined together as the sheets constituting each of a pair of three-dimensional gathered sections. Examples of the first sheet material include nonwoven fabric, and the second sheet material includes polyethylene sheets, i.e., film members. In such three-dimensional gathered sections, since the nonwoven fabric and the film member are laminated, the rigidity of the three-dimensional gathered section tends to be higher compared to cases where the film member is not laminated. As a result, the rigidity is also high at the tip of the three-dimensional gathered section. Consequently, the force with which the tip of the three-dimensional gathered section touches the wearer's skin (hereinafter simply referred to as "skin contact") becomes stronger, which may cause discomfort or pain to the wearer, and in some cases, skin problems such as marks or rashes on the skin may occur. However, if the tip of the three-dimensional gathered section is made less likely to come into contact with the wearer's skin, the original function of the three-dimensional gathered section, which is to suppress leakage of bodily fluids from the edges in the width direction of the absorbent material (hereinafter also simply referred to as "lateral leakage"), may become difficult to perform.

[0005] The object of the present invention is to provide an absorbent article having a pair of three-dimensional gathered portions including a nonwoven fabric and a film member, which can suppress lateral leakage while suppressing skin problems caused by skin contact. [Means for solving the problem]

[0006] The absorbent article of the present invention comprises an absorbent body having longitudinal, width, and thickness directions that are orthogonal to each other; a top sheet located on the skin side of the absorbent body; a back sheet located on the non-skin side of the absorbent body; and a pair of three-dimensional gathered portions located at both ends of the absorbent body in the width direction, each of which includes a nonwoven fabric and a liquid-impermeable film member, wherein each of the pair of three-dimensional gathered portions includes a first width direction portion which includes one end in the width direction, and a second width direction portion which includes the other end in the width direction, and the first width direction portion is a small portion of the top sheet, the absorbent body, and the back sheet. An absorbent article wherein the nonwoven fabric is joined to at least one of the widthwise ends, the end on the side of the second widthwise portion of the joined portion is a fixed end, the second widthwise portion includes an elastic member extending along the longitudinal direction, the edge on the side opposite to the first widthwise portion in the widthwise direction is a free end, the nonwoven fabric extends in the widthwise direction from the first widthwise portion to the second widthwise portion, the film member overlaps the non-skin side of the nonwoven fabric and is joined to the nonwoven fabric at a joint, and extends in the widthwise direction from the first widthwise portion to just before the elastic member in the second widthwise portion. [Effects of the Invention]

[0007] According to the present invention, an absorbent article comprising a pair of three-dimensional gathered sections including a nonwoven fabric and a film member can be provided that suppresses lateral leakage while also suppressing skin problems caused by skin contact. [Brief explanation of the drawing]

[0008] [Figure 1] This is a plan view of an example of the structure of an absorbent article according to an embodiment. [Figure 2] This is a schematic cross-sectional view of the absorbent material shown in Figure 1, along the line II-II. [Figure 3] This is a schematic cross-sectional view of the absorbent article shown in Figure 1, along the line III-III. [Figure 4] Figure 1 is a schematic plan view showing an example of the structure of the three-dimensional gathered portion of the absorbent article. [Modes for carrying out the invention]

[0009] This embodiment relates to the following aspects. [Aspect 1] An absorbent article comprising: an absorbent body having longitudinal, width, and thickness directions that are perpendicular to each other; a top sheet located on the skin side of the absorbent body; a back sheet located on the non-skin side of the absorbent body; and a pair of three-dimensional gathered portions located at both ends of the absorbent body in the width direction, each of the pair of three-dimensional gathered portions includes a first width direction portion which includes one end in the width direction, and a second width direction portion which includes the other end in the width direction, and the first width direction portion is joined to the end in the width direction of at least one of the top sheet, the absorbent body, and the back sheet, and the joined portion An absorbent article wherein the end of the second widthwise portion in the portion is a fixed end, the fixed end is located inside the widthwise edge at the position of the maximum length in the widthwise direction of the absorbent, the second widthwise portion includes an elastic member extending along the longitudinal direction, the edge on the side opposite to the first widthwise portion in the widthwise direction is a free end, the nonwoven fabric extends in the widthwise direction from the first widthwise portion to the second widthwise portion, the film member overlaps the non-skin side of the nonwoven fabric and is joined to the nonwoven fabric at a joint, and extends in the widthwise direction from the first widthwise portion to just before the elastic member in the second widthwise portion.

[0010] In this absorbent article, a nonwoven fabric and a film member are laminated and joined at the joint in each of the pair of three-dimensional gathered sections. The film member extends in the width direction from the first width direction portion to just before the elastic member in the second width direction portion. In this way, because the film member is present in most of the width direction (from the first width direction portion to just before the elastic member), bodily fluids (e.g., urine) are less likely to seep out from the three-dimensional gathered section even when body pressure is applied to it. Furthermore, although the film member is present up to just before the elastic member in the second width direction portion, it is not present at the free end or its vicinity (where the elastic member is located in the second width direction portion). Therefore, the rigidity at the free end and its vicinity is lower compared to the rigidity of other parts. As a result, skin contact at the free end and its vicinity is mitigated, making it less likely for the wearer to experience discomfort or pain, and reducing the likelihood of skin problems. Therefore, in an absorbent article equipped with a pair of three-dimensional gathered sections including a nonwoven fabric and a film member, it is possible to provide an absorbent article that can suppress skin problems caused by skin irritation while maintaining the function of suppressing leakage of bodily fluids.

[0011] [Aspect 2] The absorbent article according to Embodiment 1, wherein, in the width direction, the edge of the film member on the side of the first width direction portion is located in the range from the edge of the absorbent article to the edge of the absorbent, and the edge of the film member on the side of the second width direction portion is located in the range from the edge facing the first width direction portion in the portion where the nonwoven fabric is folded back at the free end to sandwich the elastic member, to a point that is a distance from the edge to the first width direction portion by the distance between the edge and the elastic member.

[0012] In this absorbent article, in the width direction, one edge of the film member is located in the range from the edge of the absorbent article to the edge of the absorbent material. On the other hand, the other edge of the film member is located in the range from the edge facing the first width direction portion in the part where the nonwoven fabric is folded over at the free end to a point that is distanced from the edge to the first width direction portion by the distance between the edge and the elastic material. Because the film member is located in such a wide range (from the edge of the absorbent material to the edge of the folded nonwoven fabric), even when body pressure is applied to the three-dimensional gathered portion, bodily fluids are less likely to seep out from the three-dimensional gathered portion. Furthermore, since the film member is not present at the free end or its vicinity, i.e., in the part where the nonwoven fabric is folded over at the free end to form a double layer, skin contact in that area is further reduced, making it less likely for the wearer to experience discomfort or pain, and less likely for skin problems to occur.

[0013] [Aspect 3] The absorbent article according to embodiment 1 or 2, wherein in each of the pair of three-dimensional gathered portions, the film member is arranged at least on the back side in the longitudinal direction.

[0014] When an absorbent garment is worn in a sleeping position (especially on its side), pressure is easily applied to the buttocks. Therefore, in this absorbent garment, the film material is positioned at least on the dorsal side in the longitudinal direction of each three-dimensional gathered section. Consequently, even if pressure is applied to the buttocks side of the three-dimensional gathered section when the wearer is in a sleeping position (especially on its side), the film material is positioned on the dorsal side, making it less likely for bodily fluids (e.g., urine) to seep out from the three-dimensional gathered section. Thus, leakage of bodily fluids in the width direction (lateral leakage) can be further suppressed.

[0015] [Aspect 4] The joint portion extends along the longitudinal direction, is arranged at intervals in the width direction, and includes a plurality of longitudinal joints that join the film member and the non-woven fabric, and a plurality of longitudinal non-joints that extend along the longitudinal direction, are arranged at intervals in the width direction, and do not join the film member and the non-woven fabric. Each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints are alternately arranged in the width direction. The absorbent article according to any one of aspects 1 to 3 (aspect).

[0016] In this absorbent article, each of the plurality of longitudinal joints that join the film member and the non-woven fabric and each of the plurality of longitudinal non-joints that do not join the film member and the non-woven fabric are alternately arranged in the width direction. Here, since the longitudinal joint portion joins the film member and the non-woven fabric (for example, adhesive, heat fusion, etc.), it is a high-rigidity portion with high rigidity. On the other hand, since the longitudinal non-joint portion does not join the film member and the non-woven fabric, it is a low-rigidity portion with low rigidity. Therefore, in the three-dimensional gather portion, the high-rigidity portion and the low-rigidity portion are alternately arranged in the width direction, and the low-rigidity portion, that is, the longitudinal non-joint portion, is easily deformed. Therefore, for example, when the three-dimensional gather portion stands up when the absorbent article is worn, when pressure is applied to the three-dimensional gather portion in the standing direction, the plurality of longitudinal non-joint portions contract in the thickness direction, and a plurality of wrinkles extending in the longitudinal direction are formed. That is, the three-dimensional gather portion is easily deformed in a bellows shape in the thickness direction, so the skin contact by the free end and its vicinity (the portion where the non-woven fabric is folded back at the free end and doubled) is more relaxed, and the wearer is less likely to feel discomfort or pain, and skin trouble is less likely to occur. Further, even if body fluid reaches the three-dimensional gather portion, the formed plurality of wrinkles extending in the longitudinal direction cause the body fluid to diffuse to the front or rear side in the longitudinal direction. Thereby, the body fluid can reach the absorber at the longitudinal end where the amount of body fluid to be absorbed is likely to be small and can be easily absorbed. Therefore, leakage of body fluid in the width direction (lateral leakage) can be more suppressed. This effect is particularly remarkable when the wearer of the absorbent article is in a sleeping posture (especially the side-lying position).

[0017] [Aspect 5] In the width direction, the plurality of longitudinal joints and the plurality of longitudinal non-joints are present between the front of the elastic member and the fixed end in the second width direction portion, the absorbent article according to Aspect 4.

[0018] In this absorbent article, since the longitudinal joints and the longitudinal non-joints are present between the front of the elastic member and the fixed end in the second width direction portion, more surely, a plurality of wrinkles extending in the longitudinal direction are formed in the standing portion of the three-dimensional gather portion. Thereby, the skin contact by the free end and its vicinity (the portion where the non-woven fabric is folded back at the free end and doubled) is more alleviated, the wearer is less likely to feel discomfort or pain, and skin trouble is less likely to occur. Further, even if body fluid reaches the three-dimensional gather portion, the body fluid is diffused to the front side or the rear side in the longitudinal direction by the plurality of wrinkles extending in the longitudinal direction. Thereby, the leakage (lateral leakage) of the body fluid in the width direction can be more suppressed.

[0019] [Aspect 6] In the width direction, the first width direction portion is positioned so as to cover the end portion of the absorber, and the plurality of longitudinal joints and the plurality of longitudinal non-joints are present outside the fixed end, the absorbent article according to Aspect 4 or 5.

[0020] In this absorbent article, the first width direction portion of the three-dimensional gather portion covers the end portion of the absorber, and the longitudinal joints and the longitudinal non-joints are present outside the fixed end in the width direction of the first width direction portion. Therefore, the longitudinal joints and the longitudinal non-joints are present in the first width direction portion that covers the absorber in the three-dimensional gather portion. Thereby, a plurality of wrinkles extending in the longitudinal direction are formed in the first width direction portion that covers the absorber in the three-dimensional gather portion. Thereby, even when body pressure is applied to the first width direction portion that covers the absorber in the three-dimensional gather portion in the state of the wearer's sleeping posture (especially the side-lying position), the body fluid diffuses in the longitudinal direction along the plurality of wrinkles, so that it is more difficult for the body fluid to leak out from the three-dimensional gather portion. Therefore, the leakage (lateral leakage) of the body fluid in the width direction can be more suppressed.

[0021] [Aspect 7] The absorbent article according to any one of embodiments 4 to 6, wherein the film member is continuously arranged from one longitudinal edge to the other edge in each of the pair of three-dimensional gathered portions, and each of the plurality of longitudinal joint portions and each of the plurality of longitudinal non-joint portions are continuously arranged from one longitudinal edge to the other edge in each of the pair of three-dimensional gathered portions.

[0022] In this absorbent article, the three-dimensional gathered portion can form multiple wrinkles that extend continuously along the longitudinal direction throughout its entire length. Therefore, because the three-dimensional gathered portion has multiple wrinkles continuously along its entire length, skin contact at the free end and its vicinity (the part where the nonwoven fabric is folded back at the free end and becomes doubled) is further reduced, making the wearer less likely to experience discomfort or pain, and less likely to experience skin problems.

[0023] [Aspect 8] The absorbent article according to any one of embodiments 4 to 7, wherein the length in the width direction at each of the plurality of longitudinal non-joint portions is greater than or equal to the length in the width direction at each of the plurality of longitudinal joint portions.

[0024] In this absorbent article, (width of the longitudinal non-jointed portion) ≥ (width of the longitudinal jointed portion). Therefore, because the width of the low-rigidity longitudinal non-jointed portion is relatively the same or larger, the three-dimensional gathered portion becomes more easily bent, and the size of the multiple wrinkles formed becomes relatively larger. As a result, the skin contact of the three-dimensional gathered portion at the free end and its vicinity (the part where the nonwoven fabric is folded back at the free end and becomes doubled) is reduced, making the wearer less likely to experience discomfort or pain, and less likely to experience skin problems. Furthermore, even if bodily fluids reach the three-dimensional gathered section, the multiple wrinkles extending in the longitudinal direction diffuse the fluids to the front or back in the longitudinal direction. This further suppresses leakage of bodily fluids in the width direction (lateral leakage).

[0025] [Aspect 9] The absorbent article according to any one of embodiments 4 to 8, wherein the elastic members are plurality, each of the plurality of elastic members extending along the longitudinal direction and spaced apart in the width direction, and in the width direction, the distance between the elastic member closest to the fixed end among the plurality of elastic members and the longitudinal joint closest to the free end among the plurality of longitudinal joints is longer than the length of each of the plurality of longitudinal joints and the length of each of the plurality of longitudinal non-joints.

[0026] In this absorbent article, the distance between the elastic member closest to the fixed end and the longitudinal joint closest to the free end is greater than the length (width) of the longitudinal joint and the length (width) of the longitudinal non-jointed portion. Therefore, in the three-dimensional gathered portion, the width is greater in the portion between the elastic member closest to the fixed end and the longitudinal joint closest to the free end in the second width direction portion. Consequently, the size of the wrinkles in that portion is larger. Due to the wrinkles in that portion, the three-dimensional gathered portion is less likely to come into contact with the skin at the free end and its vicinity (second width direction portion), making it less likely for the wearer to experience discomfort or pain, and less likely to cause skin problems. Furthermore, due to the wrinkles in that portion, even if bodily fluids reach the three-dimensional gathered portion, the bodily fluids are diffused to the front or back in the longitudinal direction. This further suppresses leakage of bodily fluids in the width direction (lateral leakage).

[0027] [Aspect 10] The absorbent article according to any one of embodiments 4 to 9, wherein, in the width direction, the distance between the outer edge of the absorbent article and the outermost longitudinal joint of the plurality of longitudinal joints in each of the pair of three-dimensional gathered portions is longer than the length of each of the plurality of longitudinal joints and the length of each of the plurality of longitudinal non-joints.

[0028] In this absorbent article, in the width direction, the distance between the outer edge of the absorbent article and the outermost longitudinal joint of the three-dimensional gathered portion is longer than the width of the longitudinal joint and the width of the longitudinal non-joint portion. In other words, at the outer edge of the absorbent article, there is a wide area (wider than the width of the longitudinal joint and the width of the longitudinal non-joint portion) along the longitudinal direction where the nonwoven fabric and film member of the three-dimensional gathered portion are not joined. As a result, a portion of the nonwoven fabric or film member that extends longitudinally is formed at the outer edge of the absorbent article, where it is floating. This reduces skin contact caused by the outer edge of the absorbent article.

[0029] [Aspect 11] The absorbent article according to any one of embodiments 4 to 10, wherein, in a plan view, the length in the width direction of the region on the skin side of the absorbent where the film member is not present is longer than the length in the width direction of the region where the film member is present.

[0030] In this absorbent article, in a plan view, the width of the area on the skin side of the absorbent where the film component is not present is longer than the width of the area where the film component is present. Therefore, the area on the skin side of the absorbent where the film component is not present is wider than the area where the film component is present. Consequently, by ensuring that the area where the film component is present is not too wide, the inhibition of absorption of bodily fluids excreted onto the top sheet of the absorbent article is suppressed, and the presence of the film component in the area where the film component is present suppresses contact of bodily fluids excreted onto the top sheet with the skin surface.

[0031] [Aspect 12] The absorbent article according to any one of embodiments 4 to 11, wherein the top sheet has irregularities in a plan view in an area that does not overlap with the film member, and the irregularities include a plurality of protrusions extending along the longitudinal direction and spaced apart in the width direction, and a plurality of recesses extending along the longitudinal direction and spaced apart in the width direction, and each of the plurality of protrusions and each of the plurality of recesses are alternately arranged in the width direction, and the pitch of the alternating arrangement of each of the plurality of protrusions and each of the plurality of recesses in the width direction is greater than the pitch of the alternating arrangement of each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints in each of the pair of three-dimensional gathered portions in the width direction.

[0032] In this absorbent material, the relatively wide pitch of the top sheet's irregularities (width of the protrusions + width of the recesses) allows bodily fluids to diffuse easily in the longitudinal direction. In addition, because the pitch of the top sheet's irregularities (width of the protrusions + width of the recesses) differs from the pitch of the joints of the three-dimensional gathered section (width of the longitudinal joints + width of the longitudinal non-joints), gaps tend to form at the interface between the top sheet and the three-dimensional gathered section (film material) at the joints, allowing bodily fluids to diffuse easily along the longitudinal direction.

[0033] [Aspect 13] The absorbent article according to any one of embodiments 1 to 11, further comprising a liquid-impermeable back sheet member positioned on the back side of the longitudinal direction of the absorbent article, on the skin side of the top sheet in the region between the pair of three-dimensional gathered portions, wherein in the back side of the longitudinal direction of the absorbent article, the liquid-impermeable pair of gathered portions and the back sheet member are configured to cover the top sheet from the skin side over the width direction of the absorbent body.

[0034] This absorbent article comprises a pair of liquid-impermeable film members located on both sides in the width direction of the absorbent body, and a liquid-impermeable back sheet member covering the area between the pair of film members in the width direction on the back side of the absorbent body in the longitudinal direction. Therefore, the liquid-impermeable sheet is arranged on the absorbent body in a roughly U-shape. Consequently, the area where the pair of film members and the back sheet member are located is not too large, which suppresses the obstruction of the absorption of bodily fluids excreted onto the top sheet of the absorbent article, and the presence of the pair of film members and the back sheet member also suppresses contact of bodily fluids excreted onto the top sheet with the skin. In addition, by protecting the wearer's buttocks from bodily fluids with the back sheet member covering the back side of the absorbent body, skin problems in the buttocks, which are prone to pressure ulcers, can be suppressed.

[0035] [Aspect 14] The absorbent article according to any one of embodiments 1 to 12, further comprising a hydrophilic antibacterial agent and / or humectant disposed on the top sheet and / or the absorbent body.

[0036] This absorbent article has a hydrophilic antibacterial agent and / or moisturizing agent placed on the top sheet (skin-facing or non-skin-facing surface) or the absorbent core (skin-facing surface or interior), so it does not repel bodily fluids such as urine, and therefore does not affect the absorption of the absorbent core of this absorbent article, thus further suppressing skin problems.

[0037] [Aspect 15] The absorbent article according to embodiment 14, wherein the top sheet has irregularities in a plan view, at least in a region that does not overlap with the film member, and the antibacterial agent and / or the moisturizing agent are applied to the surface of the top sheet having irregularities and / or the surface without irregularities.

[0038] In this absorbent article, in areas where the film component 9 is present, the film component can suppress skin maceration caused by moisture evaporation. In areas where the film component is absent, the uneven surface on the skin side of the top sheet reduces contact between the top sheet and the skin, thereby suppressing maceration. Furthermore, applying the antibacterial and moisturizing agents coated on the top sheet can suppress skin inflammation.

[0039] The absorbent articles according to the embodiment will be described below, with urine pads as an example. However, the type of absorbent article is not limited to this example, and other types of absorbent articles may be used as long as they do not deviate from the spirit of the present invention. Examples of such absorbent articles include disposable diapers of the pant type, disposable diapers of the pant type with a detachable fastening on one side, disposable diapers of the tape type, incontinence pads, sanitary napkins, panty liners, and shorts-type sanitary napkins.

[0040] Figures 1 to 3 show examples of the configuration of an absorbent article (urine pad 1) according to an embodiment. However, Figure 1 is a plan view of the urine pad 1 in its unfolded state. Figure 2 is a schematic cross-sectional view of the urine pad 1 in Figure 1 along line II-II. Figure 3 is a schematic cross-sectional view of the urine pad 1 in Figure 1 along line III-III. The urine pad 1 has a longitudinal direction L, a width direction W, and a thickness direction T that are mutually orthogonal to each other, corresponding to the length, width, and thickness of the absorbent material (described later). The urine pad 1 has a longitudinal center line LC that passes through the center of the width direction W and extends along the longitudinal direction L, and a width center line WC that passes through the center of the longitudinal direction L and extends along the width direction W. The direction and side approaching the longitudinal center line LC are the inward and inner sides of the width direction W, respectively, and the direction and side moving away from the longitudinal center line LC are the outward and outer sides of the width direction W, respectively. The direction and side approaching the center line WC in the width direction are defined as the inward and inward directions of the longitudinal direction L, respectively, while the direction and side moving away from the center line WC are defined as the outward and outward directions of the longitudinal direction L, respectively.

[0041] "Skin side" and "non-skin side" refer to the side of the urine pad 1 that is relatively closer to and further away from the wearer's skin in the thickness direction T when the pad is attached to the wearer. "Plan view" refers to viewing the urine pad 1 in its unfolded state on a plane containing the longitudinal direction L and the width direction W from the upper side (skin side) in the thickness direction T, and "planar shape" refers to the shape perceived in the planar view. "Planar direction" is any direction parallel to the plane containing the width direction W and the longitudinal direction L. In Figure 1, the upper side is the anterior or ventral side in the longitudinal direction L, and the lower side is the posterior or dorsal side in the longitudinal direction L.

[0042] When a component, structure, or shape is described as being aligned with a predetermined direction (for example, the longitudinal direction L, the width direction W, and the thickness direction T), this includes not only cases where the component is parallel to the predetermined direction, but also cases where it is within a range of ±30° with respect to the predetermined direction. The direction of curved or curved surface components is defined as the direction of the tangent line at each point on the curve. Furthermore, the end of a component in a predetermined direction (example: longitudinal direction L, width direction W) refers to a length range of 30% or less of the total length in that direction from the edge of that component, preferably 20% or less, more preferably 10% or less, and even more preferably 5% or less. These definitions described above apply not only to the urine pad 1, but also to all materials placed on the urine pad 1.

[0043] However, the "unfolded state" for urine absorption pads means the state in which the urine absorption pad is spread out on a flat surface until the non-stretchable material (e.g., nonwoven fabric) constituting the urine absorption pad is no longer wrinkled to the extent that it does not tear (and the elastic members of the urine absorption pad are stretched as necessary). Furthermore, the "unfolded state" for pant-type absorbent articles means the state in which the pair of locking parts that form the boundary between the front and rear waist regions of the pant-type absorbent article are released, and the pant-type absorbent article is spread out on a flat surface until the non-stretchable material (e.g., nonwoven fabric) constituting the pant-type absorbent article is no longer wrinkled to the extent that it does not tear. At that time, the elastic members of the pant-type absorbent article are stretched as necessary.

[0044] The urine absorption pad 1 has an abdominal portion A1, a crotch portion A2, and a dorsal portion A3 arranged from front to back along its longitudinal direction L, and in plan view, the crotch portion A2 has a gourd shape that is constricted in the width direction W. The abdominal portion A1 is the part that comes into contact with the wearer's abdomen, the crotch portion A2 is the part that comes into contact with the wearer's crotch, and the dorsal portion A3 is the part that comes into contact with the wearer's buttocks and back. However, the shape of the urine absorption pad 1 is not limited to this shape as long as it is long in the longitudinal direction L. Examples of such shapes include rectangles, rounded rectangles, rectangles with the shorter side being approximately semicircular outwards, hourglass shapes, and ovals. There are no particular restrictions on the size of the urine absorption pad 1, but for example, the length L is 300 to 900 mm and the width W is 150 to 500 mm.

[0045] The urine absorption pad 1 comprises a top sheet 2, a back sheet 3, and an absorbent core 4. The top sheet 2, the back sheet 3, and the absorbent core 4 are joined to each other by a known method, such as an adhesive.

[0046] The top sheet 2 is a liquid-permeable sheet located on the skin side of the absorbent 4. The material of the top sheet 2 is not particularly limited as long as it is a liquid-permeable sheet usable in absorbent articles. Examples include liquid-permeable nonwoven fabrics, synthetic resin films with liquid-permeable pores, and composite sheets combining these same or different types of sheets. The back sheet 3 is a liquid-impermeable sheet located on the non-skin side of the absorbent 4, and preferably has moisture permeability (breathability). The material of the back sheet 3 is not particularly limited as long as it is a liquid-impermeable (preferably moisture-permeable (breathable)) sheet usable in absorbent articles. Examples include liquid-impermeable and breathable nonwoven fabrics, synthetic resin films with breathability pores, and composite sheets combining these same or different types of sheets. The type of nonwoven fabric is not particularly limited; examples include meltblown nonwoven fabrics, spunbond nonwoven fabrics, airlaid nonwoven fabrics, and air-through nonwoven fabrics. Examples of composite nonwoven fabrics include SB nonwoven fabrics and SMS nonwoven fabrics. There are no particular restrictions on the type of synthetic resin film, and known film materials can be used. There are no particular restrictions on the material of the nonwoven fabric or synthetic resin film as long as it can be used in absorbent articles, but examples include synthetic resins, such as olefin resins like polyethylene and polypropylene, polyamide resins like 6-nylon and 6,6-nylon, and polyester resins like polyethylene terephthalate and polybutylene terephthalate. Cellulose fibers may be used as the material for the nonwoven fabric. To provide moisture permeability (breathability), the synthetic resin film may contain inorganic particles such as calcium carbonate. The thickness and basis weight of the top sheet 2 and back sheet 3 are adjusted as appropriate, taking into consideration the absorbency performance of the urine pad 1.

[0047] The absorbent material 4 is an absorbent component located between the top sheet 2 and the back sheet 3, possessing liquid-absorbing and liquid-retaining properties. The material of the absorbent material 4 is not particularly limited as long as it is an absorbent component usable in absorbent articles; examples include cellulose fibers and superabsorbent polymers (SAP). Examples of cellulose fibers include natural cellulose fibers such as wood pulp fibers, cross-linked pulp fibers, and non-wood pulp fibers, as well as regenerated cellulose fibers and semi-synthetic cellulose fibers. Examples of superabsorbent polymers (SAP) include polyacrylate-based, polysulfonate-based, and maleate-anhydride-based superabsorbent polymers. The thickness and basis weight of the absorbent material 4 are adjusted as appropriate, taking into consideration the absorbent performance of the urine pad 1. The proportion of pulp fibers in the absorbent material 4 is adjusted as appropriate, taking into consideration the absorbent performance, but examples include a range of 0-90% of the mass of the superabsorbent polymer.

[0048] The urine absorption pad 1 further comprises a pair of three-dimensional gathered sections 10 that suppress leakage of bodily fluids (e.g., urine) mainly from both ends in the width direction W (lateral leakage). The pair of three-dimensional gathered sections 10 are located at both ends in the width direction W of the absorbent body 4 and include a nonwoven fabric 7 and a liquid-impermeable film member 9. Each of the pair of three-dimensional gathered sections 10 extends along the longitudinal direction L and is arranged with a predetermined distance D between them in the width direction W, and both ends in the longitudinal direction L are fixed to the top sheet 2 or the like by a pair of fixing sections 10F by adhesive or heat fusion.

[0049] Each three-dimensional gathered portion 10 includes a first widthwise portion 10a, which includes one end in the width direction W (for example, the outer end), and a second widthwise portion 10b, which includes the other end in the width direction W (for example, the inner end). The first widthwise portion 10a is joined to the end in the width direction W of at least one of the top sheet 2, the absorber 4, and the back sheet 3, and the end of the joined portion on the side of the second widthwise portion 10b is designated as a fixed end FX. The fixed end FX is located inside the edge in the width direction W at the position of the maximum length in the width direction W of the absorber 4 (absorber 4a). Preferably, the fixed end FX is located outside the edge in the width direction W at the position of the maximum length in the width direction W of the absorber 4b. On the other hand, the second widthwise portion 10b includes an elastic member 8 that extends along the longitudinal direction L. The edge of the second widthwise portion 10b on the side opposite to the first widthwise portion 10a in the width direction W is designated as a free end FR. The first widthwise portion 10a and the second widthwise portion 10b are adjacent in the width direction W. The length (width) of the second widthwise portion 10b in the width direction W is set appropriately according to the leakage prevention function of the three-dimensional gather portion required for the urine absorption pad 1. The length (width) of the first widthwise portion 10a in the width direction W is set appropriately between the fixed end FX (which is also one edge of the second widthwise portion 10b in the width direction W) and the edge of the urine absorption pad 1 in the width direction W. In this embodiment, there are multiple elastic members 8, which extend along the longitudinal direction L and are arranged with intervals in the width direction W. The first widthwise portion 10a can be described as an upright portion that stands up when the urine absorption pad 1 is attached. The second widthwise portion 10b can be described as a fixing portion that fixes the three-dimensional gather portion 10 to the end in the width direction W of at least one of the top sheet 2, absorbent body 4, and back sheet 3. In other words, the second widthwise portion 10b (fixing portion) is located outside the widthwise W of the first widthwise portion 10a (standing portion), and fixes the first widthwise portion 10a (standing portion) to the end of the urine absorption pad 1 in the widthwise W.

[0050] The nonwoven fabric 7 constituting each three-dimensional gathered portion 10 extends in the width direction W from the first width direction portion 10a to the second width direction portion 10b. In this embodiment, the nonwoven fabric 7 holds a plurality of elastic members 8 in the second width direction portion 10b with an adhesive or the like. On the other hand, the film member 9 constituting each three-dimensional gathered portion 10 overlaps the non-skin side of the nonwoven fabric 7 and is joined to the nonwoven fabric 7 at a joint portion 21. The film member 9 extends in the width direction W from the first width direction portion 10a to just before the elastic member 8 in the second width direction portion 10b. However, the film member 9 may extend in the width direction W to the end of the second width direction portion 10b opposite to the first width direction portion 10a. In this embodiment, the film member 9 extends from the first width direction portion 10a to just before the elastic member 8 closest to the first width direction portion 10a among the plurality of elastic members 8. In other words, the edge of the film member 9 on the second widthwise portion 10b side and the elastic member 8 on the side of the first widthwise portion 10a among the multiple elastic members 8 are facing each other but spaced apart from each other.

[0051] The material of the nonwoven fabric 7 constituting the three-dimensional gathered portion 10 is not particularly limited as long as it can be used as a material for absorbent articles, for example, a hydrophobic and / or water-repellent nonwoven fabric is preferred. The type and material of the nonwoven fabric are as described above. On the other hand, the material of the film member 9 constituting the three-dimensional gathered portion 10 is not particularly limited as long as it is a liquid-impermeable and moisture-permeable (breathable) film member that can be used for absorbent articles, for example, a liquid-impermeable synthetic resin film is an example, and a liquid-impermeable and moisture-permeable (breathable) synthetic resin film member is preferred. The type and material of the synthetic resin film are as described above. Therefore, the three-dimensional gathered portion 10 is liquid-impermeable and moisture-permeable (breathable).

[0052] The film member 9, like the backsheet 3, is both liquid-impermeable and moisture-permeable, but it is preferable that the moisture permeability of the film member 9 is lower than that of the backsheet 3. In other words, it is preferable that the film member 9 has low moisture permeability. The moisture permeability of the low-moisture-permeable film member 9 is preferably not too high from the viewpoint of suppressing the evaporation of bodily fluids (e.g., urine) absorbed by the absorbent 4 and reaching the skin, and preferably not too low from the viewpoint of facilitating the evaporation of sweat from the skin and its absorption by the absorbent 4. Specifically, the moisture permeability is, for example, 50 to 900 g / m². 2 • Day is mentioned, with a range of 100-800g / m². 2 • Day is preferred, 200-700 g / m² 2 Day is preferable. This suppresses the evaporation of bodily fluids absorbed by the absorbent material 4 from reaching the skin, while allowing sweat from the skin to evaporate and be easily expelled to the outside. However, it should be noted that the moisture permeability in the three-dimensional gathered section 10 is not affected by the nonwoven fabric 7, but is limited by the moisture permeability of the film member 9. As for the moisture permeability of the back sheet 3, from the viewpoint of suppressing stuffiness inside the urine pad 1 and suppressing leakage of bodily fluids, for example, 1000 to 6000 g / m 2 • Day is mentioned, with a range of 1500-5000g / m². 2 • Day is preferred, 2000-4000 g / m² 2 • Day is more preferable. In this case, the ratio of the moisture permeability of the film member 9 to the moisture permeability of the back sheet 3 can be, for example, 2 to 70%, preferably 4 to 60%, and more preferably 6 to 50%.

[0053] The above moisture permeability values ​​are those measured according to JIS Z 0208:1976, "Test method for moisture permeability of moisture-proof packaging materials (cup method)," but differ from JIS Z 0208:1976 in the following respects. (i) Fill the breathable cup with 20g of water instead of calcium chloride. (ii) A point in a constant temperature and humidity chamber with a temperature of 40°C and a relative humidity of 60% where the moisture permeability is measured. (iii) After standing for 24 hours, measure the decrease in the mass of 20g of water (discharge), rather than the increase in the mass of the cup.

[0054] In this embodiment, as shown in the figure, the urine pad 1 may further comprise at least one of a pair of activated carbon sheets 6, a diffusion sheet 5, a superabsorbent polymer sheet (SAP sheet) 11, a low friction member 15, a cover sheet 16, and an outer sheet 19. Furthermore, the absorbent body 4 may include an upper absorbent body 4a and a lower absorbent body 4b, and the upper absorbent body 4a and the lower absorbent body 4b may each have slits 13 and 12, respectively. These configurations will be described later.

[0055] As described above, in the urine pad 1, each of the pair of three-dimensional gathered sections 10 is made of a nonwoven fabric 7 and a film member 9, which are laminated and joined at a joint 21. The film member 9 extends in the width direction W from the first width direction section 10a to just before the elastic member 8 in the second width direction section 10b. In this way, because the film member 9 is present in most of the width direction W (from the first width direction section 10a to just before the elastic member 8), even if body pressure is applied to the three-dimensional gathered section 10, bodily fluids (e.g., urine) are less likely to seep out from the three-dimensional gathered section 10. Furthermore, although the film member 9 is present up to just before the elastic member 8 in the second width direction section 10b, it is not present at the free end FR and its vicinity (the part of the second width direction section 10b including the free end FR where the elastic member 8 is located). Therefore, the rigidity of the free end FR and its vicinity is lower compared to the rigidity of other parts. Therefore, skin irritation caused by the free end FR and its vicinity is reduced, making it less likely for the wearer to experience discomfort or pain, and less likely to cause skin problems. Accordingly, an absorbent article (urine pad 1) is provided that includes a pair of three-dimensional gathered parts 10 comprising a nonwoven fabric 7 and a film member 9, and is capable of suppressing skin problems caused by skin irritation while maintaining the function of suppressing leakage of bodily fluids.

[0056] Each of the pair of three-dimensional gathered sections 10, including the nonwoven fabric 7 and the film member 9 in a preferred embodiment of this model, will be described below. Figure 4 is a schematic plan view and a partial view showing an example of the configuration of the three-dimensional gathered section 10 in the unfolded state of the urine absorption pad 1 of Figure 1.

[0057] The nonwoven fabric 7 extends from the first widthwise portion 10a to the second widthwise portion 10b and includes a skin-side nonwoven fabric 7a located on the skin side, and a non-skin-side nonwoven fabric 7b that is folded back at the free end FR of the second widthwise portion 10b and located on the non-skin side. In the second widthwise portion 10b, the skin-side nonwoven fabric 7a and the non-skin-side nonwoven fabric 7b are laminated to form a double layer, and multiple elastic members 8 are sandwiched between them with adhesive or the like. However, the length (width) in the width direction W of the non-skin-side nonwoven fabric 7b can be, for example, a value in the range of 20 to 80% of the length (width) in the width direction W of the second widthwise portion 10b, and a value in the range of 30 to 70 is preferred.

[0058] On the other hand, the film member 9 extends from the first widthwise portion 10a to just before the elastic member 8E closest to the first widthwise portion 10a among the multiple elastic members 8 in the second widthwise portion 10b. That is, the edge 9Eb on the second widthwise portion 10b side of the film member 9 and the elastic member 8E closest to the first widthwise portion 10a among the multiple elastic members 8 are spaced apart from each other. Furthermore, the edge 9Eb on the second widthwise portion 10b side of the film member 9 and the edge 7bE of the folded non-skin side nonwoven fabric 7b are spaced apart from each other, and a gap G exists between them.

[0059] The joint 21 that joins the nonwoven fabric 7 and the film member 9 includes a plurality of longitudinal joints 21a and a plurality of longitudinal non-joints 22a. The plurality of longitudinal joints 21a extend along the longitudinal direction L, are spaced apart in the width direction W, and join the film member 9 and the nonwoven fabric 7. The plurality of longitudinal non-joints 22a extend along the longitudinal direction L, are spaced apart in the width direction W, and do not join the film member 9 and the nonwoven fabric 7. Each of the plurality of longitudinal joints 21a and each of the plurality of longitudinal non-joints 22a are arranged alternately in the width direction W.

[0060] In a preferred embodiment of this design, in the three-dimensional gathered portion 10, in the width direction W, the edge 9Ea on the side of the first width direction portion 10a of the film member 9 is located in the range from the edge 1E of the urine pad 1 to the edge 4E of the absorbent body 4. On the other hand, in the width direction W, the edge 9Eb on the side of the second width direction portion 10b of the film member 9 is located in the range from the edge 7bE facing the first width direction portion 10a in the portion (non-skin side nonwoven fabric 7b) where the nonwoven fabric 7 is folded back at the free end FR to sandwich the elastic member 8, to a point that is a distance r1 between the edge 7bE and the elastic member 8E (the elastic member 8 closest to the film member 9) that is away from the edge 7bE towards the first width direction portion 10a. Therefore, the distance q1 between the edge 9Eb on the side of the second widthwise portion 10b of the film member 9 and the edge 7bE on the side of the non-skin nonwoven fabric 7b facing the first widthwise portion 10a is less than or equal to the above-mentioned distance r1 (q1 ≤ r1). However, the distance q1, that is, the length of the gap G in the widthwise direction W, can be, for example, 0.2 to 5 mm.

[0061] Therefore, in the urine pad 1, the film member 9 is located over such a wide area (at least from the edge 4E of the absorbent material 4 to the edge of the folded non-skin side nonwoven fabric 7b), so that even when body pressure is applied to the three-dimensional gathered portion 10, bodily fluids are less likely to seep out from the three-dimensional gathered portion 10. Furthermore, since the film member 9 is not present at the free end FR and its vicinity, that is, in the part where the nonwoven fabric 7 is folded over at the free end FR and becomes doubled, skin contact in that area is further reduced, making it less likely for the wearer to experience discomfort or pain, and less likely to cause skin problems.

[0062] In a preferred embodiment of this design, in the urine pad 1, the film member 9 is positioned at least on the dorsal portion (dorsal portion A3) in the longitudinal direction L of each of the pair of three-dimensional gathered portions 10. The reason for applying this configuration is as follows: When the wearer of the absorbent article (urine pad 1) is in a sleeping position (especially lying on their side), body pressure is easily applied to the buttock portion. Therefore, when this configuration is applied, the film member 9 is positioned on the dorsal side, so even if body pressure is applied to the buttock portion (dorsal portion A3) of the three-dimensional gathered portion 10 while the wearer is in a sleeping position (especially lying on their side), bodily fluids (e.g., urine) are less likely to seep out from the three-dimensional gathered portion 10. Thus, leakage of bodily fluids in the width direction W (lateral leakage) can be further suppressed. From the viewpoint of suppressing lateral leakage, it is preferable that the film member 9 be further positioned in the crotch portion A2 in the longitudinal direction L, and more preferably in the ventral portion A1.

[0063] In a preferred embodiment of this design, the urine pad 1 has multiple longitudinal joining portions 21a that join the film member 9 and the nonwoven fabric 7, and multiple longitudinal non-joint portions 22a that do not join the film member 9 and the nonwoven fabric 7, which are alternately arranged in the width direction W. Here, the longitudinal joining portions 21a are high-rigidity portions because they join the film member 9 and the nonwoven fabric 7 (for example, by adhesive, heat fusion, etc.). On the other hand, the longitudinal non-joint portions 22a are low-rigidity portions because they do not join the film member 9 and the nonwoven fabric 7. Therefore, the three-dimensional gathered portion 10 has high-rigidity portions and low-rigidity portions alternately arranged in the width direction W, and the low-rigidity portions, i.e., the longitudinal non-joint portions 22a, are easily deformed. Therefore, for example, when the three-dimensional gathered portion 10 is erected when the urine pad 1 is attached, if pressure is applied to the three-dimensional gathered portion 10 in the direction of the erection, multiple longitudinal non-jointed portions 22a will contract in the thickness direction T, forming multiple wrinkles extending in the longitudinal direction L. In other words, the three-dimensional gathered portion 10 becomes more easily deformed in a bellows-like manner in the thickness direction T, so the skin contact caused by the free end FR and its vicinity (the part where the nonwoven fabric 7 is folded back at the free end FR and becomes doubled) is further reduced, making it less likely for the wearer to feel discomfort or pain, and less likely for skin problems to occur.

[0064] Furthermore, even if bodily fluids reach the three-dimensional gathered portion 10, the multiple wrinkles formed and extending in the longitudinal direction L cause the bodily fluids to diffuse to the front or rear side in the longitudinal direction L. As a result, the amount of bodily fluids to be absorbed can reach the absorbent material 4 at the end in the longitudinal direction L, where the amount of bodily fluids to be absorbed is less, and they are easily absorbed. Therefore, leakage of bodily fluids in the width direction W (lateral leakage) can be further suppressed. This effect is particularly noticeable when the wearer of the urine absorption pad 1 is in a sleeping position (especially in a side-lying position).

[0065] In a preferred embodiment of this design, the longitudinal joint portion 21a and the longitudinal non-joint portion 22a of the urine pad 1 are located between the front of the elastic member 8 in the second widthwise portion 10b (the edge 9Eb on the side of the second widthwise portion 10b of the film member 9) and the fixed end FX. As a result, the longitudinal joint portion 21a and the longitudinal non-joint portion 22a more reliably form multiple wrinkles extending in the longitudinal direction L on the upright portion of the three-dimensional gathered portion 10. This further reduces skin irritation from the free end FR and its vicinity (the portion where the nonwoven fabric 7 is folded back at the free end FR and becomes doubled), making it less likely for the wearer to experience discomfort or pain, and less likely to cause skin problems. Furthermore, even if bodily fluids reach the three-dimensional gathered portion 10, the multiple wrinkles extending in the longitudinal direction L diffuse the bodily fluids to the front or back side of the longitudinal direction L. This further suppresses leakage of bodily fluids in the widthwise direction (lateral leakage).

[0066] In the preferred embodiment of the urine pad 1, in the width direction, the first widthwise portion 10a of the three-dimensional gathered portion 10 is positioned to cover the end of the absorbent material 4, and the longitudinal joint portion 21a and the longitudinal non-joint portion 22a are located outside the fixed end FX of the first widthwise portion 10a. Therefore, the longitudinal joint portion 21a and the longitudinal non-joint portion 22a are located in the first widthwise portion 10a that covers the absorbent material 4 in the three-dimensional gathered portion 10. As a result, multiple wrinkles extending in the longitudinal direction L are formed in the first widthwise portion 10a. Therefore, even if body pressure is applied to the first widthwise portion 10a when the wearer is in a sleeping position (especially lying on their side), the bodily fluids diffuse along the multiple wrinkles in the longitudinal direction L, making it more difficult for bodily fluids to seep out from the three-dimensional gathered portion 10. As a result, leakage of bodily fluids in the width direction W (lateral leakage) can be further suppressed.

[0067] In the preferred embodiment of the urine pad 1, the three-dimensional gathered portion 10 has a longitudinal joining portion 21a and a longitudinal non-joint portion 22a that extend continuously along the longitudinal direction L from one edge to the other edge in the longitudinal direction L, that is, along the entire longitudinal direction L. Therefore, the three-dimensional gathered portion 10 can form a plurality of wrinkles that extend continuously along the longitudinal direction L, from one edge to the other edge in the longitudinal direction L, along the entire longitudinal direction L. Because the three-dimensional gathered portion 10 has a plurality of wrinkles that extend continuously along the entire longitudinal direction L, the skin contact caused by the free edge FR and its vicinity (the part where the nonwoven fabric 7 is folded back at the free edge FR and becomes doubled) is further reduced, making it less likely for the wearer to feel discomfort or pain, and less likely for skin problems to occur.

[0068] In the preferred embodiment of the urine pad 1, the length (width) d2 in the width direction W of each of the multiple longitudinal non-joint portions 22a is greater than or equal to the length (width) d1 in the width direction W of each of the multiple longitudinal joint portions 21a. That is, d1 ≤ d2. In this case, if the length (width) d2 in the width direction W of the longitudinal non-joint portion 22a and the length (width) d1 in the width direction W of the longitudinal joint portion 21a have different lengths (widths) depending on the position in the longitudinal direction L, then the lengths (widths) d2 and d1 are set to average values. The average value is calculated, for example, by setting multiple positions (for example, 10 locations) at equal intervals in the longitudinal direction L, measuring the length (width) at these multiple positions, and taking the average. Therefore, because the widths of the low-rigidity longitudinal non-joint portions 22a are relatively the same or larger, the three-dimensional gathered portion 10 becomes more easily folded, and the size of the multiple wrinkles formed becomes relatively larger. As a result, the three-dimensional gathered portion 10 is less likely to cause skin irritation due to the free end FR and its vicinity (the part where the nonwoven fabric 7 is folded back at the free end FR and becomes doubled), making it less likely for the wearer to experience discomfort or pain, and less likely to cause skin problems. Furthermore, even if bodily fluids reach the three-dimensional gathered portion 10, the bodily fluids are diffused to the front or back side of the longitudinal direction L by the multiple wrinkles extending in the longitudinal direction L. This further suppresses leakage of bodily fluids in the width direction W (lateral leakage). However, the length (width) d2 in the width direction W at the longitudinal non-joint portion 22a can be, for example, 1 to 10 mm, and preferably 1.5 to 5 mm. On the other hand, the length (width) d1 in the width direction W at the longitudinal joint portion 21a can be, for example, 1 to 10 mm, and preferably 1.5 to 5 mm.

[0069] In the preferred embodiment of the urine pad 1, the distance (p1+q1+r1) between the elastic member 8E closest to the fixed end FX among the multiple elastic members 8 and the longitudinal joint 21E closest to the free end FR among the multiple longitudinal joints 21a is longer than the length (width) d1 of the longitudinal joint 21a and the length (width) d2 of the longitudinal non-jointed portion. However, p1 is the distance between the longitudinal joint 21E closest to the free end FR among the multiple longitudinal joints 21a and the edge 9Eb on the second width direction portion 10b side of the film member 9. Therefore, in the three-dimensional gathered portion 10, the length in the width direction W is relatively large in the portion between the elastic member 8E closest to the fixed end FX and the longitudinal joint 21E closest to the free end FR in the second width direction portion 10b. Consequently, the size of wrinkles in that portion becomes larger. Due to the wrinkles in that area, the three-dimensional gathered section is less likely to come into contact with the skin at the free end FR and its vicinity (the part where the nonwoven fabric 7 is folded back at the free end FR and becomes doubled), making it less likely for the wearer to experience discomfort or pain, and less likely to cause skin problems. Furthermore, due to the wrinkles in that area, even if bodily fluids reach the three-dimensional gathered section 10, the bodily fluids are diffused to the front or back in the longitudinal direction L. This further suppresses leakage of bodily fluids in the width direction W (lateral leakage).

[0070] In the preferred embodiment of the urine pad 1, in the width direction W, the distance between the outer edge 1E of the urine pad 1 and the outermost longitudinal joint 21a is longer than the length (width) d1 of the longitudinal joint 21a and the length (width) d2 of the longitudinal non-joint 22a. Here, since the film member 9 (three-dimensional gather portion 10) extends to the outer edge 1E of the urine pad 1, at the outer edge of the urine pad 1, there is a wide area (wider than the width of the longitudinal joint portion 21a and the width of the longitudinal non-joint 22a) along the longitudinal direction L where the nonwoven fabric 7 of the three-dimensional gather portion 10 and the film member 9 are not joined. As a result, a portion of the nonwoven fabric 7 and film member 9 that extends in the longitudinal direction L is formed at the outer edge of the urine pad 1. This reduces skin contact with the outer edge of the urine pad 1.

[0071] In the preferred embodiment of the urine pad 1, in a plan view, the length in the width direction W of the region on the skin side of the absorbent material 4 where the film member 9 is not present, that is, the length in the width direction W of the region where the pair of three-dimensional gather portions 10 are not present (the spacing D), is longer than the length in the width direction W of the region where the film member 9 is present, that is, the length in the width direction W of the pair of film members 9. Thus, in a plan view, the width of the region on the skin side of the absorbent material 4 where the film member 9 is not present is longer than the width of the region where the film member 9 is present. Therefore, the region on the skin side of the absorbent material 4 where the film member 9 is not present is wider than the region where the film member 9 is present. Consequently, by ensuring that the region where the film member 9 is present is not too wide, the absorption of bodily fluids excreted on the top sheet 2 of the urine pad 1 is suppressed, and the presence of the film member 9 suppresses contact of bodily fluids excreted on the top sheet 2 with the skin surface.

[0072] In the preferred embodiment of the urine absorption pad 1, the top sheet 2 has irregularities (not shown) in a plan view, at least in areas that do not overlap with the film member 9. The irregularities include a plurality of protrusions extending along the longitudinal direction L and spaced apart in the width direction W, and a plurality of recesses extending along the longitudinal direction L and spaced apart in the width direction W. Each of the plurality of protrusions and each of the plurality of recesses are arranged alternately in the width direction W. The pitch at which the protrusions and recesses alternate in the width direction W is greater than the pitch at which the longitudinal joints 21a and longitudinal non-joints 22a in the three-dimensional gathered portion 10 are arranged alternately in the width direction W. Here, the width of the protrusions is, for example, 2.0 to 5.0 mm, preferably 2.5 to 4.5 mm. The width of the recesses is, for example, 1.0 to 3.0 mm, preferably 1.0 to 2.5 mm. The thickness of the protrusions 71 is, for example, 0.2 to 2.0 mm, preferably 0.6 to 1.8 mm. The thickness of the recesses is, for example, 0.1 to 0.5 mm, preferably 0.2 to 0.4 mm. In this way, the relatively wide pitch of the top sheet 2 (width of the protrusions + width of the recesses) allows bodily fluids to diffuse easily in the longitudinal direction L. In addition, because the pitch of the top sheet 2 (width of the protrusions + width of the recesses) and the pitch of the joint portion 21 of the three-dimensional gathered portion 10 (width of the longitudinal joint portion 21a + width of the longitudinal non-joint portion 22a) are different, a gap is easily formed at the interface between the top sheet 2 and the three-dimensional gathered portion 10 (film member 9) at the joint portion between the top sheet 2 and the three-dimensional gathered portion 10, allowing bodily fluids to diffuse easily along the longitudinal direction L.

[0073] In a preferred embodiment of this design, the urine pad 1 is further provided with a liquid-impermeable back sheet member positioned on the back side in the longitudinal direction L, on the skin side of the top sheet 2 in the region between the pair of three-dimensional gather portions 10. In the back side of the urine pad 1 in the longitudinal direction L, the liquid-impermeable pair of three-dimensional gather portions 10 and the back sheet member are configured to cover the top sheet 2 from the skin side over the width direction W of the absorbent body 4. Here, the liquid-impermeable back sheet member may have both ends joined to the pair of three-dimensional gather portions 10 in the width direction W, and therefore may bridge the pair of three-dimensional gather portions 10, or its ends may be positioned away from the pair of three-dimensional gather portions 10. The back sheet member is not particularly limited as long as it is a liquid-impermeable sheet, but examples include a cover sheet 16 and a low-friction member 15. These will be described below.

[0074] As described above and shown in Figures 1 and 3, the urine absorption pad 1 may further include a sheet-like low-friction member 15 located on the skin side of the top sheet 2 at the dorsal portion A3, and a cover sheet 16 located on the skin side of the low-friction member 15. The cover sheet 16 is joined at both ends 16a in the width direction W to the film member 9 on the non-skin side surface of the pair of three-dimensional gathered portions 10, but is not connected to the low-friction member 15. That is, the pair of three-dimensional gathered portions 10 (the pair of film members 9) are bridged in the width direction W by the cover sheet 16. On the other hand, the low-friction member 15 is positioned so that both ends in the width direction W are separated inward from the pair of three-dimensional gathered portions 10 in the width direction W. In this way, by arranging the low-friction member 15 and the cover sheet 16 at the dorsal portion A3 of the urine absorption pad 1, the cover sheet 16 can be separated from the skin side surface of the top sheet 2 and the low-friction member 15 as the pair of three-dimensional gathered portions 10 stand up. As a result, the frictional resistance between the cover sheet 16 and the top sheet 2 of the urine absorption pad 1 is reduced due to the interposition of the low-friction member 15 and the lifting of the cover sheet 16, making it easier for the cover sheet 16 to move in the planar direction relative to the top sheet 2. The cover sheet 16 may also be joined at both ends 16a in the width direction W to the nonwoven fabric 7 (non-skin side nonwoven fabric 7b) on the non-skin side surface of the pair of three-dimensional gathered portions 10.

[0075] Therefore, even when the urine absorption pad 1 is subjected to repeated forces directed towards the rear in the longitudinal direction while the wearer's body pressure is applied, the cover sheet 16 moves in accordance with the wearer's buttock movements, making it less likely to cause physical irritation to the wearer's skin due to friction or shear force. Thus, it is less likely to cause discomfort to the wearer and less likely to cause or worsen skin problems.

[0076] The material for the cover sheet 16 is not particularly limited as long as it can be used as a material for absorbent articles. For example, hydrophilic or hydrophobic nonwoven fabrics are used, preferably impermeable to liquids, and more preferably permeable to moisture. The types and materials of the nonwoven fabrics are as described above. The material for the low-friction member 15 is not particularly limited as long as it can reduce frictional resistance with the cover sheet 16. For example, it is not particularly limited as long as it can reduce frictional resistance with the cover sheet 16, preferably impermeable to liquids, and more preferably permeable to moisture. Examples of such materials include resin sheet-like members made of resins with a low coefficient of friction, such as olefin resins such as polyethylene and polypropylene, silicone resins, and fluororesins such as polytetrafluoroethylene, and coated sheet-like members made by coating a base sheet made of general-purpose synthetic resin with a low-friction material with a low coefficient of friction, such as silicone resin or fluororesin.

[0077] Thus, in the preferred embodiment of the urine pad 1, a pair of liquid-impermeable three-dimensional gathered portions 10 (a pair of film members 9) are located on both sides of the width direction W of the absorbent body 4, and a liquid-impermeable back sheet member (e.g., a cover sheet 16, a low-friction member 15) covers (e.g., bridges) the pair of three-dimensional gathered portions 10 (a pair of film members 9) in the width direction W of the back portion of the absorbent body 4 in the longitudinal direction L. In other words, in the back portion A3, a back sheet member (e.g., the width of the cover sheet 16 is slightly wider than the spacing D, and the width of the low-friction member 15 is slightly narrower than the spacing D) is located on the skin side of the top sheet 2 across the width direction W of the absorbent body 4. Therefore, the liquid-impermeable sheets are arranged on the absorbent body 4 in a roughly U-shape. In this way, by ensuring that the area where the pair of three-dimensional gathered sections 10 (a pair of film members 9) and the back sheet member (for example, the cover sheet 16 and the low-friction member 15), i.e., the liquid-impermeable sheet, is present is not too large (the back sheet member is not present on the ventral A1 and groin A2 parts of the absorbent 4), the absorption of bodily fluids excreted onto the top sheet 2 is suppressed. At the same time, the presence of the liquid-impermeable sheet area suppresses contact between the bodily fluids excreted onto the top sheet 2 and the skin. In addition, by protecting the wearer's buttocks from bodily fluids and physical irritation with the back sheet member covering the back portion of the absorbent 4, skin problems in the buttocks, which are prone to pressure sores, can be suppressed.

[0078] In a preferred embodiment of this product, the urine pad 1 further comprises a hydrophilic antibacterial agent and / or moisturizing agent arranged on the top sheet 2 and / or absorbent 4. By using such a hydrophilic antibacterial agent and / or moisturizing agent, skin problems can be further suppressed without repelling bodily fluids such as urine, and therefore without affecting the absorption of the absorbent 4 of the urine pad 1. However, the hydrophilic antibacterial agent and / or moisturizing agent refers to an antibacterial agent and / or moisturizing agent that dissolves in 40 g or more of water at 25°C within 5 hours. It is preferable that the hydrophilic antibacterial agent and / or moisturizing agent be arranged in an area that does not overlap with the film member 9 in a plan view. The presence of the film member 9 suppresses skin maceration due to moisture evaporation, etc., while in areas where the film member 9 is absent, the antibacterial agent and moisturizing agent can suppress skin inflammation in areas prone to maceration.

[0079] In a preferred embodiment of this design, the top sheet 2 of the urine pad 1 has an uneven surface in a plan view, preferably in an area that does not overlap with the film member 9, and preferably in the entire area of ​​the top sheet 2. The antibacterial agent and / or moisturizing agent are applied to the uneven surface and / or the smooth surface of the top sheet 2. As a result, in the area where the film member 9 is present, the film member 9 can suppress skin maceration due to moisture evaporation, etc. In the area where the film member 9 is absent, the uneven surface on the skin side of the top sheet 2 reduces contact between the top sheet 2 and the skin, thereby suppressing maceration, while the antibacterial agent and moisturizing agent applied to the top sheet 2 can suppress skin inflammation. An example of such an uneven sheet is a sheet that includes a plurality of protrusions extending along the longitudinal direction L and spaced apart in the width direction W, and a plurality of recesses extending along the longitudinal direction L and spaced apart in the width direction W, with each of the plurality of protrusions and each of the plurality of recesses alternating in the width direction. The size of the protrusions and recesses is as described above.

[0080] There are no particular restrictions on hydrophilic antibacterial agents, as long as they are hydrophilic and have antibacterial function, that is, function to suppress the growth of bacteria. Examples of types of antibacterial agents include cationic antibacterial agents. Examples of cationic antibacterial agents include guanidine-based antibacterial agents, biguanide-based antibacterial agents, and quaternary ammonium salts. Examples of guanidine-based antibacterial agents include polyhexamethylene guanidine (PHMG), and examples of biguanide-based antibacterial agents include polyhexamethylene biguanide (PHMB), also known as polyaminopropyl biguanide. Examples of quaternary ammonium salts include benzalkonium chloride and benzethonium chloride. These antibacterial agents may be used individually or in combination of multiple types.

[0081] There are no particular restrictions on hydrophilic humectants, as long as they are hydrophilic and have a moisturizing function, that is, the function of retaining moisture in the skin. Examples of main components of humectants include glycerin, hyaluronic acid, urea, and heparinoids, which are components that can absorb moisture from the air and moisturize the skin. Examples of auxiliary agents for moisturizing components include polyhydric alcohols that have moisturizing and antibacterial (preservative) properties, and examples of polyhydric alcohols include butylene glycol, propylene glycol, dipropylene glycol, and propanediol.

[0082] As described above, the urine pad 1 may further comprise a pair of activated carbon sheets 6. The pair of activated carbon sheets 6 are positioned between the top sheet 2 and the absorbent body 4, and in a plan view, they extend continuously from one edge to the other in the longitudinal direction L of the absorbent body 4, and are arranged side by side on both sides in the width direction W with respect to the longitudinal center line LC. Each of the pair of activated carbon sheets 6 is a liquid-permeable sheet on which activated carbon particles are supported, and in a plan view, it has a substantially rectangular shape. Examples of activated carbon sheets 6 include those on which activated carbon particles are supported on a sheet body made of fibers, such as mixed paper made using natural fibers such as pulp or synthetic fibers such as polyethylene and activated carbon particles. The activated carbon is not particularly limited, but examples include carbonized materials such as coconut shells, bamboo, and wood (coconut shell charcoal, bamboo charcoal, wood charcoal, etc.). In addition to activated carbon, the activated carbon sheet 6 may further contain known deodorizing materials such as zeolite, silica gel, alumina, and porous glass. The thickness, basis weight, and amount of activated carbon particles of the activated carbon sheet 6 are adjusted as appropriate, taking into consideration the deodorizing function of the activated carbon sheet 6. Since this type of urine pad 1 has a pair of activated carbon sheets 6 on the skin side of the absorbent core 4, the pair of activated carbon sheets 6 can absorb and suppress the odor of bodily fluids from the top sheet 2 and the absorbent core 4.

[0083] As described above, the absorbent body 4 may include an upper absorbent body 4a located on the skin side and a lower absorbent body 4b located on the non-skin side of the upper absorbent body 4a, with the entire skin-side surface covered by the upper absorbent body 4a. The shape of the upper absorbent body 4a is a gourd shape with the crotch area A2 constricted in the width direction W, and is generally similar in shape to the urine pad 1. The shape of the lower absorbent body 4b is a rectangle that is long in the longitudinal direction L and short in the width direction W. In this embodiment, both ends of the upper absorbent body 4a in the longitudinal direction L are located further out in the longitudinal direction L than both ends of the lower absorbent body 4b in the longitudinal direction L, and therefore the upper absorbent body 4a is formed wider on both sides in the longitudinal direction L than the lower absorbent body 4b. Furthermore, the edges of the upper absorbent 4a in the width direction W are located further outward in the longitudinal direction L than the edges of the lower absorbent 4b in the width direction W, and therefore the upper absorbent 4a is formed wider on both sides in the width direction W than the lower absorbent 4b. Accordingly, in this embodiment, the edges of the absorbent 4 in the longitudinal direction L are the edges of the upper absorbent 4a in the longitudinal direction L. However, the shapes of the upper absorbent 4a and the lower absorbent 4b are not limited to these shapes, and they may both be other shapes. Examples of these shapes include rectangles, rounded rectangles, rectangles with the shorter side being approximately semicircular on the outside, hourglass shapes, and ellipses. The lower absorbent 4b includes an absorbent core 4b1 and a core wrap 4b2 that encloses the absorbent core 4b1. The thickness, basis weight, etc. of the upper absorbent 4a and the lower absorbent 4b are adjusted as appropriate considering the absorption performance of the absorbent 4. The absorbent 4 may be a single layer or three or more layers. Examples of materials for the upper absorbent layer 4a and the absorbent core 4b1 include pulp fibers and superabsorbent polymers. In this way, the entire lower absorbent layer 4b is covered from the skin side by the upper absorbent layer 4a, so that the odor of urine generated from the lower absorbent layer 4b does not spread to the skin side, which can be blocked or suppressed by the upper absorbent layer 4a. Therefore, the odor of urine present in the absorbent layer 4 can be suppressed.

[0084] As described above, the upper absorbent layer 4a and the lower absorbent layer 4b may have slits 13 and 12 that extend along the longitudinal direction L and are recessed in the thickness direction T in a plan view in an area where the activated carbon sheet 6 is not present. For example, the slit 13 of the upper absorbent layer 4a is recessed in the thickness direction T from the skin side to the non-skin side and may be a through hole that penetrates the upper absorbent layer 4a in the thickness direction T. The slit 13 is formed in the longitudinal direction L within the range from the groin area A2 to the rear of the abdominal area A1, and in the width direction W within the range where the activated carbon sheet 6 is not present in a plan view. The slit 12 of the lower absorbent layer 4b is recessed in the thickness direction T from the skin side to the non-skin side and may be a through hole that penetrates the lower absorbent layer 4b in the thickness direction T. The slit 12 is formed in the range inside the slit 13 in a plan view in the longitudinal direction L and the width direction W, and similarly, is formed within the urination area. Therefore, excreted urine is mainly guided to the slits 13 and 12, and reaches the upper absorbent layer 4a and the lower absorbent layer 4b via the slits 13 and 12 with minimal passage through the pair of activated carbon sheets 6. There, it is quickly absorbed by these absorbents and can diffuse in the planar direction (width direction W and longitudinal direction L). Thus, the pair of activated carbon sheets 6, located closer to the skin than the upper absorbent layer 4a and the lower absorbent layer 4b, can block or suppress the odor of bodily fluids such as urine generated from these absorbents. Consequently, the odor of bodily fluids present in the absorbent layer 4 can be blocked or suppressed. Furthermore, the upper absorbent layer 4a and the lower absorbent layer 4b may have a pair of embossed portions extending along the longitudinal direction L and extending from the upper absorbent layer 4a to the lower absorbent layer 4b in the thickness direction T (not shown).

[0085] As described above, the urine pad 1 may further include an outer sheet 19. The outer sheet 19 is a liquid-impermeable sheet located on the non-skin side of the back sheet 3. There are no particular restrictions on the outer sheet 19; for example, it may be the same as the back sheet 3.

[0086] As described above, the urine absorption pad 1 may further include a diffusion sheet 5 between the pair of activated carbon sheets 6 and the top sheet 2. The diffusion sheet 5 is roughly rectangular in shape, with a longer longitudinal dimension L and a shorter width W in a plan view, and the dimensions of the width W and longitudinal dimension L are roughly the same as the entire pair of activated carbon sheets 6. Examples of materials for the diffusion sheet 5 include nonwoven fabric and tissue. The diffusion sheet 5 allows for wide diffusion of urine in the planar direction (width W and longitudinal dimension L). Furthermore, since the diffusion sheet 5 covers the activated carbon sheets 6 from the skin side, even if some of the activated carbon particles fall off the sheet body of the activated carbon sheets 6, it can block or suppress the falling particles from reaching the top sheet 2.

[0087] As described above, the urine absorption pad 1 may further include a superabsorbent polymer sheet (SAP sheet) 11 containing a superabsorbent polymer between the diffusion sheet 5 and the top sheet 2 in the dorsal portion A3. The superabsorbent polymer sheet 11 is located in the dorsal portion A3 and has a substantially rectangular shape. However, the superabsorbent polymer sheet 11 includes a superabsorbent polymer and a wrap sheet containing the superabsorbent polymer. The content of the superabsorbent polymer relative to the entire superabsorbent polymer sheet 11 is 80% by mass or more, preferably 90% by mass or more. The wrap sheet may be, for example, a liquid-permeable nonwoven fabric or tissue. As a result, when the superabsorbent polymer sheet 11 absorbs urine and swells, the swollen superabsorbent polymer sheet 11 can block or suppress the odor of urine generated from the absorbent body 4 located on the non-skin side of the superabsorbent polymer sheet 11. Thus, the odor of urine present in the absorbent body 4 can be suppressed.

[0088] The absorbent article of the present invention is not limited to the embodiments described above, and as long as it does not depart from the spirit of the present invention, it is possible to add other components, delete some components, or replace some components with other components. [Explanation of symbols]

[0089] 1. Urine pad (absorbent material) 2 Top Sheets 3 Backseat 4 Absorbent 7 Nonwoven fabric 8 Elastic members 9 Film component 10 Three-dimensional gathered section 10a 1st width direction part 10b 2nd width direction part FX fixed end FR free end

Claims

1. An absorbent article comprising: an absorbent body having longitudinal, width, and thickness directions that are perpendicular to each other; a top sheet located on the skin side of the absorbent body; a back sheet located on the non-skin side of the absorbent body; and a pair of three-dimensional gathered portions located at both ends of the absorbent body in the width direction, including a nonwoven fabric and a liquid-impermeable film member, Each of the pair of three-dimensional gathered sections is, A first widthwise portion which includes one end in the widthwise direction, A second widthwise portion which includes the other end in the widthwise direction, Includes, The first widthwise portion is joined to the widthwise end of at least one of the top sheet, the absorbent, and the back sheet, and the end of the joined portion on the side of the second widthwise portion is a fixed end, and the fixed end is located inside the widthwise edge at the position of the maximum widthwise length of the absorbent. The second widthwise portion includes an elastic member extending along the longitudinal direction, and the edge on the side opposite to the first widthwise portion in the widthwise direction is a free end. The nonwoven fabric extends in the width direction from the first width direction portion to the second width direction portion, The aforementioned film member is It overlaps the non-skin side of the aforementioned nonwoven fabric and is joined to the aforementioned nonwoven fabric at the joint. In the width direction, it extends from the first width direction portion to just before the elastic member in the second width direction portion. In the width direction, The edge of the first widthwise portion of the film member is located in the range from the edge of the absorbent article to the edge of the absorbent material. The edge of the film member on the side of the second widthwise portion is located in a range from the edge facing the first widthwise portion in the portion where the nonwoven fabric is folded back at the free end to a point that is a distance from the edge to the side of the first widthwise portion by the distance between the edge and the elastic member. Absorbent material.

2. In each of the pair of three-dimensional gathered portions, the film member is positioned at least on the back side in the longitudinal direction. The absorbent article according to claim 1.

3. The aforementioned joint is A plurality of longitudinal joining portions extend along the longitudinal direction, are arranged at intervals in the width direction, and join the film member and the nonwoven fabric, A plurality of longitudinal non-joint portions extending along the longitudinal direction and spaced apart in the width direction, which do not join the film member and the nonwoven fabric, Includes, Each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints are arranged alternately in the width direction. The absorbent article according to claim 1.

4. In the width direction, the plurality of longitudinal joints and the plurality of longitudinal non-joints are located between the front of the elastic member and the fixed end in the second width direction portion. The absorbent article according to claim 3.

5. In the width direction, The first widthwise portion is positioned to cover the end of the absorbent, The plurality of longitudinal joints and the plurality of longitudinal non-joints are located outside the fixed end. The absorbent article according to claim 3.

6. The film member is arranged continuously from one edge to the other in the longitudinal direction of each of the pair of three-dimensional gathered portions. Each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints are arranged continuously from one longitudinal edge to the other edge in each of the pair of three-dimensional gathered portions. The absorbent article according to claim 3.

7. The length in the width direction of each of the plurality of longitudinal non-joint portions is greater than or equal to the length in the width direction of each of the plurality of longitudinal joint portions. The absorbent article according to claim 3.

8. In a plan view, the length in the width direction of the region on the skin side of the absorber where the film member is not present is longer than the length in the width direction of the region where the film member is present. The absorbent article according to claim 3.

9. The absorbent article is further provided with a liquid-impermeable back sheet member positioned on the back side in the longitudinal direction of the absorbent article, and on the skin side of the top sheet in the region between the pair of three-dimensional gathered portions, In the longitudinal back portion of the absorbent article, the pair of liquid-impermeable gathered portions and the back sheet member are configured to cover the top sheet from the skin side across the width direction of the absorbent body. The absorbent article according to claim 1.

10. The top sheet and / or the absorbent further comprises a hydrophilic antibacterial agent and / or humectant agent arranged in the top sheet and / or the absorbent, The absorbent article according to claim 1.

11. The top sheet has irregularities in a plan view, at least in areas that do not overlap with the film member. The antibacterial agent and / or the moisturizing agent are applied to the surface of the top sheet having irregularities and / or the surface without irregularities. The absorbent article according to claim 10.

12. An absorbent article comprising: an absorbent body having longitudinal, width, and thickness directions that are perpendicular to each other; a top sheet located on the skin side of the absorbent body; a back sheet located on the non-skin side of the absorbent body; and a pair of three-dimensional gathered portions located at both ends of the width direction of the absorbent body, including a nonwoven fabric and a liquid-impermeable film member, Each of the pair of three-dimensional gathered sections is, A first widthwise portion which includes one end in the widthwise direction, A second widthwise portion which includes the other end in the widthwise direction, Includes, The first widthwise portion is joined to the widthwise end of at least one of the top sheet, the absorbent, and the back sheet, and the end of the joined portion on the side of the second widthwise portion is a fixed end, and the fixed end is located inside the widthwise edge at the position of the maximum widthwise length of the absorbent. The second widthwise portion includes an elastic member extending along the longitudinal direction, and the edge on the side opposite to the first widthwise portion in the widthwise direction is a free end. The nonwoven fabric extends in the width direction from the first width direction portion to the second width direction portion, The aforementioned film member is It overlaps the non-skin side of the aforementioned nonwoven fabric and is joined to the aforementioned nonwoven fabric at the joint. In the width direction, it extends from the first width direction portion to just before the elastic member in the second width direction portion. The aforementioned joint is A plurality of longitudinal joining portions extend along the longitudinal direction, are arranged at intervals in the width direction, and join the film member and the nonwoven fabric, A plurality of longitudinal non-joint portions extending along the longitudinal direction and spaced apart in the width direction, which do not join the film member and the nonwoven fabric, Includes, Each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints are arranged alternately in the width direction. The aforementioned elastic members are multiple in number, Each of the plurality of elastic members extends along the longitudinal direction and is arranged with spacing in the width direction. In the width direction, The distance between the elastic member closest to the fixed end among the plurality of elastic members and the longitudinal joint closest to the free end among the plurality of longitudinal joints is longer than the length of each of the plurality of longitudinal joints and the length of each of the plurality of longitudinal non-joints. Absorbent material.

13. An absorbent article comprising: an absorbent body having longitudinal, width, and thickness directions that are perpendicular to each other; a top sheet located on the skin side of the absorbent body; a back sheet located on the non-skin side of the absorbent body; and a pair of three-dimensional gathered portions located at both ends of the width direction of the absorbent body, including a nonwoven fabric and a liquid-impermeable film member, Each of the pair of three-dimensional gathered sections is, A first widthwise portion which includes one end in the widthwise direction, A second widthwise portion which includes the other end in the widthwise direction, Includes, The first widthwise portion is joined to the widthwise end of at least one of the top sheet, the absorbent, and the back sheet, and the end of the joined portion on the side of the second widthwise portion is a fixed end, and the fixed end is located inside the widthwise edge at the position of the maximum widthwise length of the absorbent. The second widthwise portion includes an elastic member extending along the longitudinal direction, and the edge on the side opposite to the first widthwise portion in the widthwise direction is a free end. The nonwoven fabric extends in the width direction from the first width direction portion to the second width direction portion, The aforementioned film member is It overlaps the non-skin side of the aforementioned nonwoven fabric and is joined to the aforementioned nonwoven fabric at the joint. In the width direction, it extends from the first width direction portion to just before the elastic member in the second width direction portion. The aforementioned joint is A plurality of longitudinal joining portions extend along the longitudinal direction, are arranged at intervals in the width direction, and join the film member and the nonwoven fabric, A plurality of longitudinal non-joint portions extending along the longitudinal direction and spaced apart in the width direction, which do not join the film member and the nonwoven fabric, Includes, Each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints are arranged alternately in the width direction. In the width direction, the distance between the outer edge of the absorbent article and the outermost longitudinal joint of the plurality of longitudinal joints in each of the pair of three-dimensional gathered portions is longer than the length of each of the plurality of longitudinal joints and the length of each of the plurality of longitudinal non-joints. Absorbent material.

14. An absorbent article comprising: an absorbent body having longitudinal, width, and thickness directions that are perpendicular to each other; a top sheet located on the skin side of the absorbent body; a back sheet located on the non-skin side of the absorbent body; and a pair of three-dimensional gathered portions located at both ends of the width direction of the absorbent body, including a nonwoven fabric and a liquid-impermeable film member, Each of the pair of three-dimensional gathered sections is, A first widthwise portion which includes one end in the widthwise direction, A second widthwise portion which includes the other end in the widthwise direction, Includes, The first widthwise portion is joined to the widthwise end of at least one of the top sheet, the absorbent, and the back sheet, and the end of the joined portion on the side of the second widthwise portion is a fixed end, and the fixed end is located inside the widthwise edge at the position of the maximum widthwise length of the absorbent. The second widthwise portion includes an elastic member extending along the longitudinal direction, and the edge on the side opposite to the first widthwise portion in the widthwise direction is a free end. The nonwoven fabric extends in the width direction from the first width direction portion to the second width direction portion, The aforementioned film member is It overlaps the non-skin side of the aforementioned nonwoven fabric and is joined to the aforementioned nonwoven fabric at the joint. In the width direction, it extends from the first width direction portion to just before the elastic member in the second width direction portion. The aforementioned joint is A plurality of longitudinal joining portions extend along the longitudinal direction, are arranged at intervals in the width direction, and join the film member and the nonwoven fabric, A plurality of longitudinal non-joint portions extending along the longitudinal direction and spaced apart in the width direction, which do not join the film member and the nonwoven fabric, Includes, Each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints are arranged alternately in the width direction. The top sheet has irregularities in a plan view, at least in areas that do not overlap with the film member. The aforementioned irregularities are Multiple protrusions extending along the longitudinal direction and spaced apart in the width direction, A plurality of recesses extending along the longitudinal direction and spaced apart in the width direction, Includes, Each of the multiple protrusions and each of the multiple recesses are arranged alternately in the width direction. The pitch at which each of the plurality of protrusions and each of the plurality of recesses are alternately arranged in the width direction is greater than the pitch at which each of the plurality of longitudinal joints and each of the plurality of longitudinal non-joints in each of the pair of three-dimensional gathered portions are alternately arranged in the width direction. Absorbent material.

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