Absorbent article and set of absorbent articles

Abstract

An absorbent article (1) includes a surface sheet (21), a back sheet (22), and an absorbent body (23) including an absorbent core (31). The absorbent body (23) includes a pair of colored regions (A1) disposed on both sides of a center line (CL1) so as to overlap the absorbent core (31) in a thickness direction (Z), and a non-colored region (A2) disposed between the pair of colored regions (A1) on the same side of the absorbent core (31) as the side on which the pair of colored regions (A1) are provided, in a width direction (X). The outer side edge portions of the pair of colored regions (A1) in the width direction (X) are disposed so as to overlap end edges (31c) of the absorbent core (31) in the width direction (X). The number of sheet materials laminated on the pair of colored regions (A1) is less than the number of sheet materials laminated on the non-colored region (A2).

Description

Technical Field

[0001] This disclosure relates to absorbent articles and groups of absorbent articles. Background Technology

[0002] Previously known absorbent articles have a pair of side absorbents on both sides of a central absorbent, which can be easily made to stand up, thereby preventing leakage of excrement (see Patent Document 1).

[0003] Prior art literature

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2013-102888 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] The absorbent core, including the absorbent material, is generally white, mostly in the same color family as the other constituent materials of the absorbent article. Therefore, even if the leak-proof effect is improved by increasing the width of the absorbent core, as described in Patent Document 1, the user cannot easily visually confirm that the width of the absorbent core has increased. As a result, it is difficult for the user to truly feel reassured about the absorbent article (in other words, the expectation that the absorbent core will effectively prevent leakage, or the actual feeling that the absorbent article can effectively suppress leakage around the legs). Creating such a sense of reassurance about the absorbent article is extremely important, especially in situations where the absorbent article is used for extended periods or at night, to eliminate user anxiety and provide a comfortable life for the user.

[0008] Therefore, one aspect of the present disclosure is to provide absorbent articles and sets of absorbent articles that can effectively enhance the user's sense of security.

[0009] Solution for solving the problem

[0010] One aspect of this disclosure relates to an absorbent article having, along its length, a ventral region located on the wearer's abdomen, a dorsal region located on the wearer's back, and a crotch region located between the ventral and dorsal regions. The absorbent article comprises: a liquid-permeable surface sheet located on the wearer's skin side; a liquid-impermeable back sheet located on the wearer's non-skin side; and an absorbent body disposed between the surface and back sheets, including an absorbent core for absorbing the wearer's excrement. The absorbent body has: a pair of colored regions spaced apart by a width perpendicular to the length direction. The absorber is positioned on both sides of a centerline parallel to the length direction, with the absorbent core overlapping in a thickness direction perpendicular to both the length and width directions; and a non-colored region is positioned between a pair of colored regions in the width direction on the same side as the absorbent core, opposite to the side where the absorbent core is located. The outer edges of each pair of colored regions in the width direction overlap with the end edges of the absorbent core in the width direction. The amount of sheet material laminated on the pair of colored regions on the opposite side of the side where the absorbent core is located relative to the pair of colored regions is less than the amount of sheet material laminated on the non-colored regions on the opposite side of the side where the absorbent core is located relative to the non-colored regions.

[0011] In the absorbent article described above, a pair of colored regions are provided, each having an outer edge that overlaps with the end edge of the absorbent core in the width direction. The amount (number or quantity) of sheet material laminated on the pair of colored regions is less than the amount of sheet material laminated on the uncolored regions. That is, by not placing more sheet material on the pair of colored regions than on the uncolored regions, the visual confirmation of the pair of colored regions is not excessively obstructed. As a result, the user can properly visually confirm the pair of colored regions and easily grasp the position of the end edge of the absorbent core in the width direction. Consequently, the user can have the expectation that the absorbent core, positioned to overlap with the outer edge of the pair of colored regions, will effectively prevent leakage of excrement. Furthermore, after using the absorbent article, if it is confirmed that no leakage of excrement has occurred, a sense of reassurance regarding the absorbent article can be appropriately created (in other words, a sense of trust in the absorbent article based on the genuine feeling of actually obtaining the expected effect as described above). Therefore, according to the absorbent article described above, the user's sense of reassurance can be effectively improved.

[0012] The other aspects of this disclosure relate to an absorbent article group comprising the aforementioned absorbent article and an absorbent pad for use on the absorbent article, wherein the absorbent article is a shorts-type or belt-type disposable diaper, a pair of colored areas and a non-colored area are disposed on the skin side of the wearer relative to the absorbent core, and the absorbent pad is installed on the skin side of the absorbent article with the center line passing through the center of the absorbent pad in the width direction, at the center position of the absorbent body in the length direction, the outer edges of the pair of colored areas in the width direction are located on the outside relative to the outer ends of the absorbent pad in the width direction.

[0013] In the absorbent product set described above, even when the absorbent pad is attached to the absorbent product for combined use, the user can visually confirm the outer edges of a pair of colored areas at the center of the absorbent body along its length. This allows the user to visually perceive that the absorbent product has a wider (larger) absorbent core than the absorbent pad in the area of ​​concern regarding side leakage (i.e., the center of the absorbent body along its length). As a result, this effectively increases the user's sense of security.

[0014] The effects of the invention

[0015] According to this disclosure, absorbent articles and sets of absorbent articles can be provided to effectively enhance the user's sense of security. Attached Figure Description

[0016] Figure 1 This is a perspective view schematically illustrating an absorbent article according to one embodiment.

[0017] Figure 2 This is a top view of an absorbent item viewed from the non-skin side.

[0018] Figure 3 This is a top view of an absorbent product viewed from the side of the skin.

[0019] Figure 4 It is along Figure 3 A schematic diagram of the cross-sectional structure of an absorbent article along the IV-IV line.

[0020] Figure 5 It is along Figure 3 A schematic diagram of the cross-sectional structure of an absorbent article with VV lines. (A) is a schematic diagram showing the leak-proof pleats in the upright position. (B) is a schematic diagram showing the leak-proof pleats laid down to the maximum extent with the leak-proof pleats facing inward.

[0021] Figure 6 This is a diagram showing an example of the configuration of the recessed portion of the absorbent core.

[0022] Figure 7This is a diagram showing a variation of the width of the colored area.

[0023] Figure 8 This is a diagram showing a modified example of the absorber.

[0024] Figure 9 This is a diagram showing an example of a coloring pattern for a colored area.

[0025] Figure 10 This is a top view of an absorbent article assembly according to one embodiment, viewed from the skin side. Detailed Implementation

[0026] Based on the description in this specification and the accompanying drawings, at least the following methods [1] to

[19] will become clear.

[0027] [1] An absorbent article having, along its length, an abdominal region located on the abdomen of the wearer in the wearing state, a dorsal region located on the back of the wearer in the wearing state, and a crotch region located between the abdominal region and the dorsal region, wherein, The above-mentioned absorbent articles possess the following characteristics: A liquid-permeable surface sheet, which is located on the skin side of the wearer in the above-described wearing condition; A liquid-impermeable back panel, which, in the aforementioned wearing condition, is located on the non-skin-facing side of the wearer; and An absorbent body disposed between the surface sheet and the back sheet, and including an absorbent core for absorbing the wearer's excrement. The above absorber has: A pair of colored regions, located on either side of a centerline passing through the center of the absorbent in a width direction perpendicular to the length direction and parallel to the length direction, are arranged to overlap with the absorbent core in a thickness direction perpendicular to both the length and width directions; and A non-colored region, located on the same side as the absorbent core where the pair of colored regions are located, is disposed between the pair of colored regions in the width direction. The outer edges of each of the pair of colored regions in the aforementioned width direction are arranged to overlap with the end edge of the aforementioned absorbent core in the aforementioned width direction. The amount of sheet material laminated on the pair of colored regions relative to the side opposite to the side where the absorbent core is disposed is less than the amount of sheet material laminated on the uncolored regions relative to the side opposite to the side where the absorbent core is disposed.

[0028] [2] Absorbent articles such as [1], wherein, The aforementioned pair of colored areas and the aforementioned non-colored areas are disposed on the skin side of the wearer, relative to the aforementioned absorbent core.

[0029] [3] Absorbent articles such as [1], wherein, The aforementioned pair of colored areas and the aforementioned non-colored areas are disposed on the non-skin side of the wearer, relative to the aforementioned absorbent core.

[0030] [4] An absorbent article such as any one of [1] to [3], wherein, The absorbent article also includes a pair of leak-proof pleats, which are provided on both sides of the absorbent body in the width direction, and the two ends in the length direction are fixed, and are configured to stand up by contracting the portion between the two ends in the length direction. With the leak-proof pleats folded inward in the width direction, the inner edge of the colored area in the width direction is located inside the width direction compared to the top of the leak-proof pleats.

[0031] [5] An absorbent article such as any one of [1] to [4], wherein, The absorbent article also includes a pair of leak-proof pleats, which are provided on both sides of the absorbent body in the width direction, and the two ends in the length direction are fixed, and are configured to stand up by contracting the portion between the two ends in the length direction. With the leak-proof pleats folded inward in the width direction, at the center of the absorbent body in the length direction, the end edge of the absorbent core in the width direction is located outward in the width direction compared to the top of the leak-proof pleats.

[0032] [6] An absorbent article such as any one of [1] to [5], wherein, The aforementioned absorbent core is formed with approximately equal width throughout the entire region along the aforementioned length direction.

[0033] [7] An absorbent article such as any one of [1] to [6], wherein, In the portion of the absorbent core contained in the crotch area, on both sides separated by the center line, there are a pair of recesses that extend along the length direction and whose thickness in the thickness direction is smaller than that of the surrounding area.

[0034] [8] Absorbent articles such as [7], wherein, The pair of recesses each have: a ventral curved portion that bends outward in the width direction from the central position of the recess in the length direction toward the ventral side; and a dorsal curved portion that bends outward in the width direction from the central position of the recess in the width direction toward the dorsal side.

[0035] [9] Absorbent articles such as [7] or [8], wherein, At least a portion of each of the above-mentioned pair of recesses overlaps with the above-mentioned colored area in the above-mentioned thickness direction.

[0036]

[10] An absorbent article such as any one of [7] to [9], wherein, More than half of the area of ​​each of the aforementioned pair of concave portions overlaps with the aforementioned colored area in the aforementioned thickness direction.

[0037]

[11] An absorbent article such as any one of [7] to

[10] , wherein, The entirety of each of the above-mentioned pair of recesses overlaps with the above-mentioned colored area in the above-mentioned thickness direction.

[0038]

[12] An absorbent article such as any one of [1] to

[11] , wherein, At the center of the absorber in the length direction, the combined width of the pair of colored regions in the width direction is greater than or equal to the width of the uncolored region in the width direction.

[0039]

[13] An absorbent article such as any one of [1] to

[11] , wherein, At the center of the absorber in the length direction, the sum of the widths of the pair of colored regions in the width direction is less than or equal to the width of the uncolored region in the width direction.

[0040]

[14] An absorbent article such as any one of [1] to

[13] , wherein, The aforementioned pair of colored regions are respectively disposed in the entire area of ​​the aforementioned crotch region in the aforementioned length direction.

[0041]

[15] An absorbent article such as any one of [1] to

[14] , wherein, The aforementioned pair of colored regions are arranged such that they overlap with the regions on both sides of the central region in the aforementioned length direction when the aforementioned absorbent article is divided into three equal parts along the aforementioned length direction.

[0042]

[16] An absorbent article as described in any of [1] to

[15] , wherein, The end edge of each of the aforementioned pair of colored regions in the aforementioned length direction overlaps with the end edge of the aforementioned absorbent core in the aforementioned length direction.

[0043]

[17] An absorbent article as described in any of [1] to

[16] , wherein, The portion of the absorbent core contained in the crotch area has a groove that extends along the center line in the length direction and has a thickness in the thickness direction that is smaller than the surrounding area.

[0044]

[18] Absorbent articles such as

[17] , wherein, The absorbent article also has a telescopic member for extending or retracting at least a portion of the absorbent core contained in the crotch area and along the centerline in the length direction.

[0045]

[19] An absorbent article assembly comprising an absorbent article having at least the configuration described in [2] above and an absorbent pad for use attached to the absorbent article, wherein, The aforementioned absorbent items are disposable diapers in the form of shorts or straps. When the absorbent pad is installed on the skin-side of the inner body of the absorbent article with the center line passing through the center of the absorbent pad in the width direction, at the center position of the absorbent body in the length direction, the outer edge of the pair of colored areas in the width direction is located outside compared to the outer end of the absorbent pad in the width direction.

[0046] [Implementation Method]

[0047] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Furthermore, in the following description, the same or equivalent elements will be labeled with the same reference numerals, and repeated descriptions will be omitted. The drawings are simplified or exaggerated in order to facilitate understanding, and the dimensions are not limited to those depicted in the drawings.

[0048] The absorbent article 1 according to one embodiment will be described below. Figure 1 This is a 3D representation of absorbent item 1. Figure 2 This is a top view of the absorbent item 1 from the non-skin side (Z2). Figure 3 This is a top view of the absorbent material 1 viewed from the skin side (Z1). Figure 4 It is along Figure 3 A schematic diagram of the cross-sectional structure of line IV-IV. Figure 5 (A) and (B) are along Figure 3 A schematic diagram of the cross-sectional structure of the VV line. Figure 5 (A) schematically shows the state of the leak-proof pleats 25, which will be described later, when they are erect. Figure 5 (B) schematically shows the state in which the leak-proof pleats 25 are laid down to the maximum extent inward.

[0049] In the following description, "wearer" refers to the person wearing the absorbent article 1. "Skin side" is the side of the absorbent article 1 that faces the wearer's skin when the wearer is wearing it (hereinafter referred to as the "wearing state"). "Non-skin side" is the side facing away from the wearer's skin when the wearer is wearing it. The "user" of the absorbent article 1 includes the wearer described above, and also includes those who provide care or support to the wearer as a child or a person being cared for (caregiver, nurturer).

[0050] like Figure 1 As shown, as an example, absorbent article 1 is a shorts-type disposable diaper that absorbs the wearer's urine and other excrement. That is, absorbent article 1 has: a waist opening H1 for insertion into the wearer's waist; and a pair of leg openings H2 for insertion into the wearer's legs. Figure 1 The diagram shows the leg opening H2 through which the left leg can be inserted. The absorbent article 1 consists of an outer body 10 facing outward (non-skin side Z2) in the wearing state and an inner body 20 fixed to the inside of the outer body 10. The absorbent article 1 is configured to be cut by tearing open a pair of side seals 10a provided on the left and right sides of the outer body 10 of the wearer.

[0051] Figure 2 as well as Figure 3 The absorbent article 1 in its unfolded state is shown. The unfolded state refers to the state in which the outer body 10 is cut along a pair of side seals 10a, and the absorbent article 1 is stretched until no wrinkles are formed. In the following description, unless otherwise specified, the shape and positional relationship of the various parts of the absorbent article 1 in the unfolded state will be described.

[0052] like Figure 2 as well as Figure 3 As shown, the absorbent article 1 has the following configuration, which includes, along the length direction Y: an abdominal region 1a located on the abdomen of the wearer in the wearing state; a dorsal region 1b located on the back of the wearer in the wearing state; and a crotch region 1c located between the abdominal region 1a and the dorsal region 1b.

[0053] The absorbent article 1 extends in both the width direction (X) and length direction (Y) when unfolded. The length direction (Y) is the direction in which the ventral region 1a, the crotch region 1c, and the dorsal region 1b are arranged. In the unfolded state, the length direction (Y) is the direction in which the ventral region 1a and the dorsal region 1b face each other across the crotch region 1c. The width direction (X) is perpendicular to the length direction (Y) and corresponds to the wearer's left-right orientation when worn. The thickness direction (Z) is perpendicular to both the width direction (X) and the length direction (Y) and is the direction in which the outer garment 10 and the inner garment 20 overlap. In the following description, the side of the absorbent article 1 located in the length direction (Y) of the ventral region 1a will sometimes be referred to simply as the "ventral side," and the side in the length direction (Y) of the dorsal region 1b will sometimes be referred to simply as the "dorsal side."

[0054] As in this embodiment, when the absorbent article 1 is a shorts-type diaper, in the unfolded state (refer to...) Figure 2 as well as Figure 3 In the expanded state, the ventral region 1a is defined as the portion of the absorbent article 1 encompassing the area from the ventral end 10b of the outer body 10 to the dorsal end of the ventral side seal 10a. Similarly, in the unfolded state, the dorsal region 1b is defined as the portion of the absorbent article 1 encompassing the area from the dorsal end 10c of the outer body 10 to the ventral end of the dorsal side seal 10a. Furthermore, when the absorbent article 1 has a configuration other than a shorts-type diaper (e.g., a belt-type diaper or absorbent pad), the ventral region 1a and the dorsal region 1b can be defined in other ways. For example, when the entire absorbent article 1 is divided into four equal parts along the length direction Y, the two central regions are defined as the crotch region 1c, and the regions on either side are defined as the ventral region 1a and the dorsal region 1b.

[0055] (Composition of the outer casing)

[0056] like Figures 2-4 As shown, the outer casing 10 has a main body sheet 11, a ventral side sheet 12, and a back side sheet 13. As an example, the main body sheet 11 is a sheet member that defines the overall shape of the outer casing 10 when viewed from the thickness direction Z (in this embodiment, it is an hourglass shape, for example). However, the configuration of the main body sheet 11 is not limited to the above configuration. For example, the main body sheet 11 may also be composed of a so-called three-part configuration consisting of two sheet members corresponding to the ventral and back sides respectively, and a sheet member disposed on the non-skin-facing side Z2 of the inner casing 20. The ventral side sheet 12 is arranged to overlap with the main body sheet 11 in the ventral region 1a. The back side sheet 13 is arranged to overlap with the main body sheet 11 in the back region 1b. The main body sheet 11 is formed, for example, of SMS nonwoven fabric. The ventral side sheet 12 and the back side sheet 13 are formed, for example, of spunbond nonwoven fabric.

[0057] The ventral sheet 12 is folded back in such a way that it clamps the ventral end 11a of the main sheet 11. That is, the ventral sheet 12 has an inner portion 121 located inside (skin side Z1) relative to the main sheet 11; and an outer portion 122 located outside (non-skin side Z2) relative to the main sheet 11.

[0058] The end 121a of the folded-back inner portion 121 is located on the dorsal side relative to the ventral end 20a of the inner body 20, and on the ventral side relative to the ventral end 31a of the absorbent core 31 contained in the inner body 20.

[0059] The end 122a of the folded-back outer portion 122 is positioned on the dorsal side compared to the end 121a of the inner portion 121. Between the outer portion 122 and the main body piece 11 in the ventral region 1a, a plurality of (19 in this embodiment) ventral waistband telescopic members 14 are arranged along the length direction Y. Figure 2 As shown, each abdominal waistband stretch member 14 extends parallel to the width direction X between its end edges 1d in the width direction X of the abdominal region 1a of the absorbent article 1. Therefore, the abdominal waistband portion of the outer garment 10 stretches in the width direction X to match the wearer's waist size. The multiple abdominal waistband stretch members 14 are made of elastic materials such as rubber threads or spandex.

[0060] The back side sheet 13 is folded back in such a way that it clamps the back side end 11b of the main body sheet 11. That is, the back side sheet 13 has an inner portion 131 located inside (skin side Z1) relative to the main body sheet 11; and an outer portion 132 located outside (non-skin side Z2) relative to the main body sheet 11.

[0061] The end 131a of the folded-back inner portion 131 is located on the ventral side relative to the dorsal end 20b of the inner body 20, and on the dorsal side relative to the dorsal end 31b of the absorbent core 31 contained in the inner body 20.

[0062] The end 132a of the folded-back outer portion 132 is positioned on the ventral side compared to the end 131a of the inner portion 131. Between the outer portion 132 and the main body piece 11 in the dorsal region 1b, a plurality of (15 in this embodiment) dorsal waistband telescopic members 15 are arranged along the length direction Y. Figure 2 As shown, each back waistband stretch member 15 extends parallel to the width direction X between its end edges 1e in the width direction X of the back region 1b of the absorbent article 1. Therefore, the back waistband portion of the outer garment 10, like the abdominal waistband portion with the abdominal waistband stretch member 14 described above, stretches in the width direction X to match the wearer's waist size. The multiple back waistband stretch members 15 are made of elastic materials such as rubber fibers or spandex.

[0063] Between the outer side 132 and the main body 11, at a position closer to the abdomen than the plurality of back waist extension members 15, a plurality of (in this embodiment, 3) leg extension members 16 are arranged along the length direction Y. Figure 2 As shown, each leg-length telescopic member 16 includes a portion extending in the width direction X between the end edges 1e of the back region 1b of the absorbent article 1 and extending in a curved shape along the edge of the respective back portion of a pair of leg openings H2. Through the multiple leg-length telescopic members 16, the outer garment 10 extends and retracts to match the wearer's leg circumference. The multiple leg-length telescopic members 16 are made of elastic materials such as rubber fibers or spandex.

[0064] The inner portion 121 of the ventral side panel 12 and the inner body 20 are bonded together by a hot-melt adhesive (not shown) disposed between the inner portion 121 and the inner body 20. Additionally, the outer portion 122 of the ventral side panel 12 and the main body panel 11 are bonded together by a hot-melt adhesive (not shown) disposed between the outer portion 122 and the main body panel 11, in a manner that clamps in multiple ventral waistband telescopic members 14. Similarly, the inner portion 131 of the back side panel 13 and the inner body 20 are bonded together by a hot-melt adhesive (not shown) disposed between the inner portion 131 and the inner body 20. Furthermore, the outer portion 132 of the back side panel 13 and the main body panel 11 are bonded together by a hot-melt adhesive (not shown) disposed between the outer portion 132 and the main body panel 11, in a manner that clamps in multiple back waistband telescopic members 15 and multiple leg telescopic members 16. Furthermore, the main body 11 and the inner body 20 are bonded together by a hot melt adhesive (not shown) disposed between the main body 11 and the inner body 20 (back panel 22). By joining the components together as described above, the absorbent article 1 has a configuration in which the outer body 10 and the inner body 20 are integrally combined.

[0065] (Composition of the internal components)

[0066] like Figure 2 , Figure 3 as well as Figure 5 As shown, when viewed from the thickness direction Z, the inner body 20 extends in both the length direction Y and the width direction X, having a rectangular shape in the length direction Y that is longer than the width direction X. The inner body 20 has a surface sheet 21, a back sheet 22, an absorbent body 23, and a pair of side sheets 24.

[0067] The surface sheet 21, when worn, is located on the skin-side Z1 of the wearer, forming the surface that contacts the wearer's skin. The surface sheet 21 is made of a nonwoven fabric with liquid permeability (water permeability), such as spunbond nonwoven fabric, and covers the absorbent body 23 from the skin-side Z1. Typically, the surface sheet 21 is white and without pattern. The surface sheet 21 is bonded to the surface of the absorbent body 23 on the skin-side Z1 (the surfaces of the white tissue paper 32 and the colored tissue paper 33, described later) for example, using a hot-melt adhesive (not shown).

[0068] The back sheet 22 is the sheet located on the non-skin side Z2 of the wearer when in use. Specifically, the back sheet 22 is located on the opposite side of the surface sheet 21, separated from the absorbent body 23. The back sheet 22 is, for example, made of a liquid-impermeable (water-impermeable) film and covers the absorbent body 23 from the non-skin side Z2. The back sheet 22 is, for example, adhered to the surface of the non-skin side Z2 of the absorbent body 23 by a hot-melt adhesive (not shown).

[0069] The absorber 23 is disposed between the surface sheet 21 and the back sheet 22 of the inner body 20. For example... Figure 5 As shown, the absorbent body 23 includes: an absorbent core 31 that absorbs urine and other excrement of the wearer that has passed through the surface sheet 21; a pair of white tissues 32 covering the skin-side Z1 of the absorbent core 31; and a pair of colored tissues 33 disposed on the pair of white tissues 32. The width (length in the width direction X) of the absorbent body 23 (absorbent core 31) is approximately the same as the width of the inner body 20. The length (length in the length direction Y) of the absorbent body 23 (absorbent core 31) is slightly shorter than the length of the inner body 20. Specifically, the ventral end 31a of the absorbent core 31 is located on the dorsal side compared to the ventral end 20a of the inner body 20 (surface sheet 21, etc.). In addition, the dorsal end 31b of the absorbent core 31 is located on the ventral side compared to the dorsal end 20b of the inner body 20 (surface sheet 21, etc.).

[0070] An absorbent core 31 is laminated on the backing sheet 22. The absorbent core 31 may contain, for example, pulp fibers and a superabsorbent polymer (SAP) to absorb the wearer's urine. The pulp used as the absorbent core 31 may be, for example, chemical pulp, cellulose fibers, rayon, cellulose acetate fibers, etc. The superabsorbent polymer may be, for example, starch-based, acrylic-based, or amino acid-based granular or fibrous polymers.

[0071] A pair of white tissue papers 32 are arranged to cover the skin-facing side Z1 of the absorbent core 31. As an example, the pair of white tissue papers 32 extend from the outer edge of the absorbent core 31 in the width direction X towards the center of the width direction X, and are arranged to overlap each other at the center of the width direction X. When viewed from the thickness direction Z, the pair of white tissue papers 32 are each formed into a rectangular shape extending from the ventral end 31a to the dorsal end 31b of the absorbent core 31. That is, the end edges of each white tissue paper 32 in the length direction Y overlap with the end edges (ventral end 31a and dorsal end 31b) of the absorbent core 31 in the length direction Y.

[0072] A pair of colored tissues 33 are tissues colored in a color other than white (blue for example). The pair of colored tissues 33 are arranged on both sides of a centerline CL1 passing through the center of the absorbent core 23 (absorbent core 31) in the width direction X and parallel to the length direction Y, such that they overlap with the absorbent core 31 in the thickness direction Z. The outer ends 33a of each of the pair of colored tissues 33 in the width direction X overlap with the end edges 31c of the absorbent core 31 in the width direction X. When viewed from the thickness direction Z, each pair of colored tissues 33 is formed into a rectangular shape extending from the ventral end 31a to the dorsal end 31b of the absorbent core 31. That is, the end edges 33b of each colored tissue 33 in the length direction Y (refer to...) Figure 3 It overlaps with the end edge (ventral end 31a and dorsal end 31b) of the absorbent core 31 in the length direction Y.

[0073] Here, the surface sheet 21 is a liquid-permeable nonwoven fabric as described above, so the color of the components on the non-skin side Z2 of the surface sheet 21 can be seen through the skin side Z1. Therefore, the color of each of the pair of colored tissues 33 can be visually confirmed from the skin side Z1. That is, as... Figure 3 As shown, a pair of colored tissues 33 form a pair of colored areas A1. Additionally, on the same side as the absorbent core 31 and the side where the pair of colored areas A1 are located (skin-side Z1 in this embodiment), a non-colored area A2 is formed between the pair of colored areas A1 in the width direction X. The colored area A1 is the area where the colored tissues 33 are located, and when viewed from the skin-side Z1 of the surface sheet 21, it is the area where the color of the colored tissues 33 (blue in this embodiment) is visible. The non-colored area A2 is the area where no colored tissues 33 are located, and when viewed from the skin-side Z1 of the surface sheet 21, it is the area where the white (uncolored) white tissue 32 is visible. That is, in this embodiment, the colored tissues 33 function as components constituting the colored areas A1, and the white tissue 32 primarily functions as components constituting the non-colored area A2 (the white area).

[0074] A pair of side panels 24 are located at the ends of the inner body 20 in the width direction X. The pair of side panels 24 form a pair of leak-proof pleats 25 to prevent leakage (side leakage) of excrement such as urine excreted by the wearer in the width direction X. The pair of leak-proof pleats 25 are provided on both sides of the absorbent body 23 in the width direction X, and their two ends (fixed areas FA) in the length direction Y are fixed, configured to stand up by contracting the portion between the fixed areas FA in the length direction Y. As an example, the leak-proof pleats 25 have a structure in which multiple (e.g., 4) telescopic members 26 extending in the length direction Y are arranged inside the side panels 24 that are folded back into a bag shape. Furthermore, in Figure 3 The image only shows... Figure 5 One of the four telescopic members 26 included in each of the leak-proof pleats 25 shown. By contracting in the length direction Y through such a telescopic member 26, the portion of the side panel 24 arranged between the fixed areas FA functions as a leak-proof pleat 25. The telescopic member 26 is made of an elastic material such as rubber filaments or rubber strips.

[0075] (The effect of absorbent item 1)

[0076] In the absorbent article 1 described above, such as Figure 3 As shown, the outer edges of each of the pair of colored regions A1 in the width direction X (the outer end 33a of the colored paper 33) are arranged to overlap with the end edge 31c of the absorbent core 31 in the width direction X. Furthermore, the amount X1 of sheet material laminated on the pair of colored regions A1 (colored paper 33) on the side opposite to the side where the absorbent core 31 is arranged (non-skin side Z2) (skin side Z1) is less than or equal to the amount X2 of sheet material laminated on the side opposite to the side where the absorbent core 31 is arranged (non-skin side Z2) (skin side Z1) (i.e., "X1 ≤ X2"). In this embodiment, as Figure 5 As shown, the sheet material disposed on the colored area A1 (colored tissue paper 33) is only the surface sheet 21, and therefore "X1 = 1 surface sheet 21". Similarly, the sheet material disposed on the uncolored area A2 (white tissue paper 32) is only the surface sheet 21, and therefore "X2 = 1 surface sheet 21". Therefore, "X1 = X2" holds true.

[0077] As described above, the absorbent article 1 includes a pair of colored regions A1 having an outer edge that overlaps with the end edge 31c of the absorbent core 31 in the width direction X. The amount X1 of sheet material laminated on the pair of colored regions A1 is set to be less than or equal to the amount X2 of sheet material laminated on the uncolored regions A2 (in this embodiment, X1 = X2). That is, by not arranging a greater amount of sheet material on the pair of colored regions A1 than on the uncolored regions A2, the visual visibility of the pair of colored regions A1 is not excessively obstructed. This allows the user to properly visually confirm the pair of colored regions A1 and easily grasp the position of the end edge 31c of the absorbent core 31 in the width direction X. As a result, the user can expect that the absorbent core 31, positioned to overlap with the outer edge of the pair of colored regions A1 (the outer end 33a of the colored paper 33), will effectively prevent leakage of excrement. Furthermore, after using absorbent item 1, and upon confirming that no leakage of excrement has occurred, a sense of reassurance regarding absorbent item 1 can be appropriately fostered (in other words, a sense of trust in absorbent item 1 based on the genuine feeling of actually achieving the expected effect as described above). Therefore, absorbent item 1 can effectively enhance the user's sense of reassurance.

[0078] Furthermore, in the region along the width direction X of the colored area A1, at the edge (outer end 33a of the colored paper 33), the amount of sheet material configured as a laminate is no greater than in other regions within the colored area A1. That is, the entire colored area A1 has the same visual clarity, and the region along the edge (outer end 33a) specifically intended for visual clarity by the user is not visually obstructed compared to other regions within the colored area A1. Thus, through the colored area A1, the user can easily visually grasp the position of the edge 31c of the absorbent core 31.

[0079] A pair of colored areas A1 and uncolored areas A2 are disposed on the skin-side Z1 of the wearer relative to the absorbent core 31. According to the above configuration, when the absorbent article 1 is worn by the wearer (i.e., when the user visually confirms the skin-side Z1 of the absorbent article 1), the pair of colored areas A1 allows the user to visually grasp the area where the absorbent core 31 is disposed (the position of the end edge 31c in the width direction X), thereby appropriately giving the user a sense of security regarding the absorbent article 1.

[0080] like Figure 5As shown in (B), when the leak-proof pleat 25 is folded inward in the width direction X, the inner edge of the colored area A1 in the width direction X (i.e., the inner end 33c of the colored paper 33) is located inside the width direction X compared to the top 25a of the leak-proof pleat 25. According to this configuration, even when the leak-proof pleat 25 is folded down to its maximum extent in the width direction X, the colored area A1 is not completely covered by the leak-proof pleat 25, thus ensuring the visual visibility of the colored area A1.

[0081] like Figure 5 As shown in (B), with the leak-proof pleats 25 folded inward in the width direction X, at the center position of the absorbent body 23 in the length direction Y ( Figure 3 The edge 31c of the absorbent core 31 in the width direction X is located outside the top 25a of the leak-proof pleat 25, relative to the center line CL2. According to the above configuration, by forming the absorbent core 31 into a large-width shape with the aforementioned positional relationship relative to the leak-proof pleat 25 (for example, a shape without a typical mid-narrowing shape, or a shape where even if there is a mid-narrowing portion, the width of the mid-narrowing portion is larger than the typical size), the side leakage prevention effect of excrement obtained by the absorbent core 31 can be improved. Furthermore, by visually emphasizing the extent to which the width of the absorbent core 31 is large enough to have the aforementioned positional relationship relative to the leak-proof pleat 25 through the colored area A1, the user can appropriately feel reassured about the absorbent article 1. Furthermore, by configuring the absorbent core 31 into a wide shape and providing a colored area A1 along the end edge 31c of the absorbent core 31, when an absorbent pad such as a urine pad is placed on the inner body 20 (surface sheet 21) of the absorbent article 1, the colored area A1 can be exposed on both sides of the width direction X of the absorbent pad, allowing the user to visually confirm that the absorbent core 31 is wide. As a result, when the absorbent article 1 and the absorbent pad are used together, the user can also feel more at ease about the absorbent article 1.

[0082] Furthermore, the absorbent core 31 is formed with approximately equal width throughout the entire length direction Y. In this embodiment, the absorbent core 31 is formed into a rectangular shape of equal width when viewed from the thickness direction Z. According to the above configuration, the absorbent core 31 does not have a narrowing shape in the middle and is formed with a large width throughout the entire length direction Y, thereby improving the side leakage prevention effect and providing users with peace of mind.

[0083] like Figure 3 as well as Figure 5As shown, within the crotch area 1c of the absorbent core 31, on both sides separated by the center line CL1, there are a pair of recesses 311 extending in the length direction Y and in the thickness direction Z, respectively. The thickness of the absorbent core 31 is smaller than that of the surrounding area. As an example, the recesses 311 can be formed by laminating the material constituting the absorbent core 31 (SAP, pulp, etc.) only in the area on the back sheet 22, except for a portion of the area (the predetermined area forming the recesses 311). In this case, the recesses 311 become portions without the material constituting the absorbent core 31 and without the thickness of the absorbent core 31 (thickness is 0). According to the above configuration, the absorbent core 31 can be deformed starting from the pair of recesses 311. Therefore, the side leakage prevention effect can be improved by using a wide absorbent core 31, and the wearing discomfort caused by the wide absorbent core 31 can be reduced.

[0084] In this embodiment, each of the pair of recesses 311 has: a ventral curved portion 311a that curves outward in the width direction X from the center position of the recess 311 in the length direction Y toward the ventral side; and a dorsal curved portion 311b that curves outward in the width direction X from the center position of the recess 311 toward the dorsal side. That is, each recess 311 has a bow shape, wherein the center position in the length direction Y is located at the innermost side in the width direction X, and the two ends in the length direction Y are located at the outermost side in the width direction X. According to the above configuration, by having a pair of recesses 311 with ventral curved portions 311a and dorsal curved portions 311b respectively, the fit with the wearer's leg circumference can be improved, and as a result, the wearer's feeling of discomfort when wearing the garment can be effectively reduced.

[0085] like Figure 3 As shown, in this embodiment, each of the pair of recesses 311 overlaps the colored area A1 in the thickness direction Z. For example, the central position of the recess 311 in the length direction Y (the innermost part in the width direction X) is configured to contact the inner end of the colored area A1 (the inner end 33c of the colored paper 33) when viewed from the thickness direction Z. According to this configuration, by overlapping the recess 311, which becomes the starting point for deformation of the absorbent article 1, with the colored area A1, the colored area A1 can be appropriately deformed. This makes it easy for the user to visually confirm that the colored area A1 (i.e., the absorbent core 31) deforms appropriately following the movement of the leg. As a result, the user can appropriately feel reassured about the absorbent article 1.

[0086] In addition, such as Figure 6As shown in (A), a pair of recesses 311 are respectively configured such that more than half of their area overlaps with the colored region A1 in the thickness direction Z. In this example, the innermost portion of the recess 311 in the width direction X is located inside the inner end 33c of the colored region A1 (colored tissue paper 33) when viewed from the thickness direction Z, and more than half of the total area of ​​the recess 311 overlaps with the colored region A1. Alternatively, it can be as follows: Figure 6 As shown in (B), at least a portion of each of the pair of recesses 311 is arranged to overlap with the colored region A1 in the thickness direction Z. In this example, only the ends of the ventral curved portion 311a and the dorsal curved portion 311b of the recesses 311 overlap with the colored region A1. Even Figure 6 The method shown in (A) or (B) can also achieve the aforementioned effect, making it easy for the user to visually confirm that the colored area A1 (i.e., the absorbent core 31) deforms appropriately following the movement of the leg circumference. However, from the viewpoint of achieving the aforementioned effect more effectively, and Figure 6 Compared to method (C), Figure 6 Method (B) is more ideal, and Figure 6 Compared to method (B), the above implementation method ( Figure 3 The method of ) is more ideal.

[0087] At the center position of the absorber 23 in the length direction Y (on the center line CL2), the total value (w1×2) of the widths w1 of a pair of colored regions A1 in the width direction X can also be greater than or equal to the width (w2) of the uncolored region A2 in the width direction X. That is, the width w1 of a pair of colored regions A1 can also be set in such a way that "w1×2≥w2" holds. For example, it can also be configured as follows: Figure 7 As shown in (A), the total width w1 of the colored region A1 is greater than the width w2 of the uncolored region A2. According to the above configuration, by sufficiently increasing the width of a pair of colored regions A1 relative to the uncolored region A2, the visual confirmability of a pair of colored regions A1 can be effectively improved.

[0088] Alternatively, at the center position of the absorber 23 in the length direction Y (on the center line CL2), the combined width w1 of a pair of colored regions A1 in the width direction X can also be less than or equal to the width w2 of the uncolored region A2 in the width direction X. That is, the width w1 of a pair of colored regions A1 can also be set in such a way that "w1×2≤w2" holds. For example, it can also be configured as follows: Figure 7As shown in (B), the total width w1 of the colored regions A1 is less than the width w2 of the uncolored regions A2. According to this configuration, by suppressing the width of the pair of colored regions A1 to a certain extent relative to the uncolored regions A2, the amount of coloring material required to form the pair of colored regions A1 can be reduced. Furthermore, by setting the colored regions A1 only at positions relatively close to the portion along the end edge 31c of the absorbent core 31, the user can more accurately determine the position of the end edge 31c of the absorbent core 31 through the colored regions A1.

[0089] like Figure 3 As shown, in this embodiment, the width w1 of the colored region A1 is set such that the sum of the widths w1 of a pair of colored regions A1 (w1×2) is the same as the width w2 of the uncolored region A2. With this configuration, the advantages of both the case where "w1×2≥w2" and the case where "w1×2≤w2" can be obtained simultaneously in a balanced manner.

[0090] Preferably, a pair of colored regions A1 are respectively disposed in the entire area of ​​the crotch region 1c in the length direction Y. In this embodiment, the ventral end 31a and the dorsal end 31b of the absorbent core 31 reach the ventral region 1a and the dorsal region 1b, respectively, and the two ends (the two end edges 33b of the colored paper 33) of each colored region A1 in the length direction Y overlap with the ventral end 31a and the dorsal end 31b of the absorbent core 31, thus satisfying the above-described configuration conditions. According to the above configuration, by distributing the colored regions A1, which mark the positions of the end edges of the absorbent core 31, throughout the entire crotch region 1c, which is the part most prone to leakage of excrement (i.e., the part where the user is likely to worry about leakage), a sense of reassurance can be appropriately created for the user.

[0091] Preferably, such as Figure 3 As shown, a pair of colored regions A1 are respectively configured to overlap with the regions on both sides of the central region R1 in the length direction Y (the ventral region R2 and the dorsal region R3) when the absorbent article 1 is divided into three equal parts in the length direction Y. In this embodiment, the ventral region 1a is included in region R2, and the dorsal region 1b is included in region R3. Each colored region A1 extends from the ventral region 1a to the dorsal region 1b, thus satisfying the above-described configuration conditions. According to the above configuration, by sufficiently lengthening the length of the colored region A1 in the length direction Y, the visual confirmability of the colored region A1 can be improved, and a sense of security for the user can be appropriately created. Furthermore, from the viewpoint of further improving the above-described effect, it is more preferable that a pair of colored regions A1 are respectively configured to overlap with the regions on both sides in the length direction Y (the regions on both sides other than the two central regions) when the absorbent article 1 is divided into four equal parts in the length direction Y.

[0092] The end edges (end edges 33b of the colored tissue paper 33) of each pair of colored areas A1 in the length direction Y overlap with the end edges (ventral end 31a and back end 31b) of the absorbent core 31 in the length direction Y. According to the above configuration, by sufficiently lengthening the length of the colored area A1 in the length direction Y until it is the same length as the absorbent core 31, the visual visibility of the colored area A1 can be improved, and a sense of security for the user can be appropriately created.

[0093] like Figure 3 as well as Figure 5 As shown, the portion of the crotch area 1c within the absorbent core 31 includes a groove 312, which extends along the center line CL1 in the length direction Y and has a thickness smaller than the surrounding area in the thickness direction Z. As an example, the groove 312, like the pair of recesses 311, can be formed by laminating a material (SAP, pulp, etc.) that constitutes the absorbent core 31 only in a portion of the backing sheet 22 (the predetermined area forming the groove 312). In this case, the groove 312 is formed by a portion lacking the material constituting the absorbent core 31 and thus having no thickness (thickness 0) of the absorbent core 31. In this embodiment, both the pair of recesses 311 and the groove 312 are formed by laminating a material that constitutes the absorbent core 31 only in areas other than the predetermined areas forming the pair of recesses 311 and the groove 312. Furthermore, the groove 312 is positioned between the pair of recesses 311 facing the wearer's urethral opening. As an example, the groove 312 is formed into a rectangular shape that is longer in the length direction Y when viewed from the thickness direction Z.

[0094] According to the above configuration, the urine excreted by the wearer (urine that has passed through the surface sheet 21) can be appropriately diffused along the groove 312 in the length direction Y of the absorbent core 31, thereby improving the absorption efficiency of urine in the absorbent core 31. Furthermore, by deforming the absorbent core 31 along the groove 312, the fit of the absorbent core 31 to the wearer's urethral opening can be improved. Moreover, as in this embodiment, by forming the absorbent core 31 into a wide shape and providing the groove 312, the fit of the absorbent core 31 to the wearer's urethral opening can be improved, and the area of ​​the absorbent core 31 located on the outer side of the width direction X of the fitted portion (the portion facing the urethral opening) can be significantly increased. This effectively reduces the risk of urine leakage, providing the user with further peace of mind regarding the absorbent article 1.

[0095] like Figure 3 as well as Figure 5As shown, the inner body 20 has a telescopic member 27 for extending and retracting at least a portion of the absorbent core 31 contained within the crotch region 1c and along the centerline CL1 in the longitudinal direction Y. The telescopic member 27 is made of an elastic material such as rubber filaments or rubber strips, for example, similar to the telescopic member 26. In this embodiment, as an example, the surface sheet 21 is formed in a pouch shape to cover the side of the absorbent core 31 and the non-skin side Z2 of the back sheet 22. Furthermore, the telescopic member 27 is fixed and disposed between the back sheet 22 and the surface sheet 21 on the non-skin side Z2 of the back sheet 22. As a result, the sagging of the close-fitting portion of the absorbent core 31 (the portion that deforms along the groove 312 in a way that is close to the urethral opening) can be suppressed (i.e., movement away from the urethral opening), and the closeness of the absorbent core 31 relative to the wearer's urethral opening can be effectively improved.

[0096] Furthermore, in this embodiment, as an example, the telescopic member 27 is positioned corresponding to the groove 312 when viewed from the thickness direction Z (in this embodiment, it is positioned along the edge of the groove 312). More specifically, a pair of telescopic members 27 extending in the length direction Y are positioned along the two side edges of the groove 312 in the width direction X. As a result, the sagging (i.e., movement away from the urethral opening) of the absorbent core 31 (the portion that deforms along the groove 312 in a manner that closely adheres to the urethral opening) can be more effectively suppressed, and the fit of the absorbent core 31 to the wearer's urethral opening can be more effectively improved.

[0097] [Variation Example]

[0098] The embodiments of this disclosure have been described above, but this disclosure is not limited to the above embodiments. The materials and shapes of each component are not limited to those described above, and various materials and shapes can be used. Furthermore, a portion of the structure of the absorbent article 1 described above can be modified into other structures or omitted.

[0099] In the above embodiment, a pair of colored regions A1 and uncolored regions A2 are disposed on the skin-side Z1 relative to the absorbent core 31. In contrast, for example... Figure 8 As shown, a pair of colored areas A1 and uncolored areas A2 can also be arranged on the non-skin side Z2, relative to the absorbent core 31. Figure 8In the example, the colored paper 33 constituting the colored area A1 is disposed between the absorbent core 31 and the back sheet 22. Therefore, the amount of sheet material X1 laminated on the colored area A1 (colored paper 33) on the non-skin side Z2 is only the amount of the back sheet 22 and the surface sheet 21 (the portion covering the back sheet 22). In contrast, the amount of sheet material X2 laminated on the non-colored area A2 (white paper 32) on the non-skin side Z2 is the amount of the back sheet 22 and the surface sheet 21 (the portion covering the back sheet 22) plus the absorbent core 31. Therefore, "X1 < X2" holds true. Furthermore, even when considering that the white of the non-colored area A2 is due to the absorbent core 31, "X1 = X2", and at least it is not "X1 > X2". Based on the above configuration, when the absorbent article 1 is taken out of the packaging (e.g., a package containing multiple absorbent articles 1) or after the absorbent article 1 is installed on the wearer (i.e., when the user visually confirms the non-skin side Z2 of the absorbent article 1), the user can visually grasp the area where the absorbent core 31 is arranged (the position of the end edge 31c in the width direction X) through a pair of colored areas A1, which can appropriately give the user a sense of security about the absorbent article 1.

[0100] Alternatively, the above implementation methods can be combined with... Figure 8 The composition and combination. That is, the colored paper 33 can also be disposed on the skin side Z1 compared to the absorbent core 31, as in the above embodiment, and as... Figure 8 In the example, the absorbent core 31 is also provided with colored paper 33 on the non-skin side Z2. In this case, regardless of whether it is the skin side Z1 or the non-skin side Z2, the colored area A1 formed by the colored paper 33 allows the user to visually grasp the position of the edge 31c of the absorbent core 31, which can more appropriately give the user a sense of security about the absorbent item 1.

[0101] In the above embodiments, the shape, width (length in the width direction X) and length (length in the length direction Y) of one colored area A1 are set to be the same as the shape, width and length of the other colored area A1, but at least one of the shape, width and length of one colored area A1 may be different from at least one of the shape, width and length of the other colored area A1.

[0102] In the above embodiment, the colored area A1 is achieved by configuring colored paper 33 as a component different from the absorbent core 31 and the white paper 32, but the colored area A1 can also be formed by printing (e.g., color printing on a portion of the white paper 32). In the case where the colored area A1 is formed by printing, the components used to form the colored area A1 can be reduced.

[0103] Furthermore, in situations where printing is used, it is easy to form things like... Figure 9 The colored areas A11, A12, and A13 with the prescribed pattern are shown. Figure 9 The colored area A11 shown in (A) is formed by arranging multiple vertical colored sections. Figure 9 The colored area A12 shown in (B) is formed by arranging multiple horizontal colored sections. Figure 9 The coloring region A13 shown in (C) is formed by regularly arranging a plurality of dot-shaped coloring portions. In addition, when the coloring region is composed of such a plurality of scattered coloring portions, the region containing the plurality of coloring portions (i.e., a region that can be understood as a whole region in which the plurality of coloring portions are arranged according to a prescribed pattern) can be defined as a region (coloring regions A11 to A13) that corresponds to the coloring region A1 described in the above embodiment.

[0104] Furthermore, in the above embodiment, the absorbent article 1 is a shorts-type diaper, but the absorbent article 1 can also be a belt-type diaper. Additionally, the absorbent article 1 can also be an absorbent pad having the same or similar configuration as the inner body 20 in the above embodiment, but without the configuration corresponding to the outer body 10 in the above embodiment. Furthermore, when the absorbent article 1 is configured as a belt-type diaper or an absorbent pad, the "unfolded state" of the absorbent article 1 described in the above embodiment can also be interpreted as the state in which the absorbent article 1 is stretched until no wrinkles are formed.

[0105] like Figure 10 As shown, the absorbent article 1 described above can also be combined with the absorbent pad 50 to form an absorbent article assembly 100. The absorbent pad 50 has: an absorbent core 51; a surface sheet 52 covering the skin-side Z1 of the absorbent core 51; and a back sheet 53 covering the non-skin-side Z2 of the absorbent core 51. The absorbent core 51 can be made of, for example, the same material as the absorbent core 31 (e.g., SAP, pulp, etc.). As an example, the absorbent pad 50 has a rectangular shape when viewed from the thickness direction Z. However, the shape of the absorbent pad 50 is not limited to the above configuration. For example, the absorbent pad 50 can also be formed in an hourglass shape, or it can be formed in a shape that is asymmetrical with respect to a central axis parallel to the length direction Y.

[0106] In the absorbent article assembly 100, when the absorbent pad 50 is installed on the skin-side Z1 of the inner body 20 of the absorbent article 1 with the center line CL1 passing through the center of the absorbent pad 50 in the width direction X, at the central position of the absorbent body 23 in the length direction Y (i.e., on the center line CL2), the outer edges of a pair of colored areas A1 in the width direction X (the outer ends 33a of the colored paper 33) are located outside the outer ends 50a of the absorbent pad 50 in the width direction X. As an example, a bonding member for bonding the absorbent pad 50 to the inner body 20 (surface sheet 21) may also be provided on the non-skin-side Z2 of the back sheet 53 of the absorbent pad 50. In this case, the absorbent pad 50 is positioned on the inner body 20 with the center line CL1 passing through the center of the absorbent pad 50 in the width direction X as described above, and the back sheet 53 of the absorbent pad 50 is pressed onto the surface sheet 21 of the inner body 20, thereby allowing the absorbent pad 50 to be mounted relative to the inner body 20.

[0107] In the absorbent article assembly 100 described above, even when the absorbent pad 50 is installed on the inner body 20 of the absorbent article 1 for use in combination with the absorbent article 1, the user can visually confirm the outer edges (outer ends 33a) of a pair of colored areas A1 at the center position (on the center line CL2) of the absorbent body 23 in the longitudinal direction Y. Therefore, in the area of ​​concern regarding side leakage (i.e., the center position of the absorbent body 23 in the longitudinal direction Y), the user can visually perceive that the absorbent article 1 has an absorbent core 31 that is wider than the absorbent pad 50. As a result, the user's sense of security is effectively enhanced.

[0108] Furthermore, the absorbent articles constituting the absorbent article set 100 do not need to have all the components of the absorbent article 1 of the above-described embodiment. It is sufficient that at least one pair of colored areas A1 (the components constituting the colored areas A1) are arranged relative to the absorbent core 31 on the skin-side Z1, and have the wide shape described above along the center line CL2. Alternatively, the absorbent article 1 can also be a strip-type disposable diaper. In this case, the same effect as described above can be obtained regarding the case where the absorbent article 1 is a shorts-type disposable diaper. Additionally, the absorbent article 1 and the absorbent pad 50 can also be an article set with the same brand name (a label attached to products of the same concept). That is, by combining absorbent articles 1 and absorbent pad 50 that correspond to each other with the same brand name (and size), the absorbent article set 100 with the above-described configuration can also be achieved. In this case, the user can easily identify the absorbent article 1 and absorbent pad 50 constituting the absorbent article set 100 by using the same brand name as a marker (i.e., gaining peace of mind by implementing the absorbent article set 100 described above). For example, the brand name commonly used for both the absorbent article 1 and the absorbent pad 50 (e.g., "Lehuyi (registered trademark)") may be displayed on the absorbent article 1 itself (e.g., the non-skin side Z2 of the outer casing 10) or on the packaging containing one or more absorbent articles 1. Similarly, the aforementioned common brand name may be displayed on the absorbent pad 50 itself or on the packaging containing one or more absorbent pads 50.

[0109] Explanation of reference numerals in the attached figures

[0110] 1…Absorbent article, 1a…Ventral region, 1b…Dorsal region, 1c…Crotch region, 21…Surface sheet, 22…Back sheet, 23…Absorbent body, 25…Leak-proof pleat, 25a…Top, 27…Telescopic component, 31…Absorbent core, 31c…End edge, 33b…End edge, 311…Recess, 50…Absorbent pad, 50a…Outer end, 100…Absorbent article group, 311a…Ventral bend, 311b…Dorsal bend, 312…Groove, A1, A11, A12, A13…Colored area, A2…Uncolored area.

Claims

1. An absorbent article having, along its length, an abdominal region located on the abdomen of the wearer in the wearing state, a dorsal region located on the back of the wearer in the wearing state, and a crotch region located between the abdominal region and the dorsal region, wherein, The above-mentioned absorbent articles possess the following characteristics: A liquid-permeable surface sheet, which is located on the skin side of the wearer in the above-described wearing condition; A liquid-impermeable back panel, which, in the aforementioned wearing condition, is located on the non-skin-facing side of the wearer; and An absorbent body disposed between the surface sheet and the back sheet, and including an absorbent core for absorbing the wearer's excrement. The above absorber has: A pair of colored regions are arranged on both sides of a centerline passing through the center of the absorbent in the width direction perpendicular to the length direction and parallel to the length direction, in a way that overlaps with the absorbent core in the thickness direction perpendicular to both the length direction and the width direction. as well as A non-colored region, located on the same side as the absorbent core where the pair of colored regions are located, is disposed between the pair of colored regions in the width direction. The outer edges of each of the pair of colored regions in the aforementioned width direction are arranged to overlap with the end edge of the aforementioned absorbent core in the aforementioned width direction. The amount of sheet material laminated on the pair of colored regions relative to the side opposite to the side where the absorbent core is disposed is less than the amount of sheet material laminated on the uncolored regions relative to the side opposite to the side where the absorbent core is disposed.

2. The absorbent article as claimed in claim 1, wherein, The aforementioned pair of colored areas and the aforementioned non-colored areas are disposed on the skin side of the wearer, relative to the aforementioned absorbent core.

3. The absorbent article as claimed in claim 1, wherein, The aforementioned pair of colored areas and the aforementioned non-colored areas are disposed on the non-skin side of the wearer, relative to the aforementioned absorbent core.

4. The absorbent article as claimed in claim 1, wherein, The absorbent article also includes a pair of leak-proof pleats, which are provided on both sides of the absorbent body in the width direction, and the two ends in the length direction are fixed, and are configured to stand up by contracting the portion between the two ends in the length direction. With the leak-proof pleats folded inward in the width direction, the inner edge of the colored area in the width direction is located inside the width direction compared to the top of the leak-proof pleats.

5. The absorbent article as claimed in claim 1, wherein, The absorbent article also includes a pair of leak-proof pleats, which are provided on both sides of the absorbent body in the width direction, and the two ends in the length direction are fixed, and are configured to stand up by contracting the portion between the two ends in the length direction. With the leak-proof pleats folded inward in the width direction, at the center of the absorbent body in the length direction, the end edge of the absorbent core in the width direction is located outward in the width direction compared to the top of the leak-proof pleats.

6. The absorbent article as claimed in claim 5, wherein, The aforementioned absorbent core is formed with approximately equal width throughout the entire region along the aforementioned length direction.

7. The absorbent article as claimed in claim 5 or 6, wherein, In the portion of the absorbent core contained in the crotch area, on both sides separated by the center line, there are a pair of recesses that extend along the length direction and whose thickness in the thickness direction is smaller than that of the surrounding area.

8. The absorbent article of claim 7, wherein, The pair of recesses each have: a ventral curved portion that bends outward in the width direction from the central position of the recess in the length direction toward the ventral side; and a dorsal curved portion that bends outward in the width direction from the central position of the recess in the width direction toward the dorsal side.

9. The absorbent article of claim 7, wherein, At least a portion of each of the above-mentioned pair of recesses overlaps with the above-mentioned colored area in the above-mentioned thickness direction.

10. The absorbent article of claim 7, wherein, More than half of the area of ​​each of the aforementioned pair of concave portions overlaps with the aforementioned colored area in the aforementioned thickness direction.

11. The absorbent article of claim 7, wherein, The entirety of each of the above-mentioned pair of recesses overlaps with the above-mentioned colored area in the above-mentioned thickness direction.

12. The absorbent article of claim 1, wherein, At the center of the absorber in the length direction, the combined width of the pair of colored regions in the width direction is greater than or equal to the width of the uncolored region in the width direction.

13. The absorbent article of claim 1, wherein, At the center of the absorber in the length direction, the sum of the widths of the pair of colored regions in the width direction is less than or equal to the width of the uncolored region in the width direction.

14. The absorbent article of claim 1, wherein, The aforementioned pair of colored regions are respectively disposed in the entire area of ​​the aforementioned crotch region in the aforementioned length direction.

15. The absorbent article of claim 1, wherein, The aforementioned pair of colored regions are arranged such that they overlap with the regions on both sides of the central region in the aforementioned length direction when the aforementioned absorbent article is divided into three equal parts along the aforementioned length direction.

16. The absorbent article of claim 1, wherein, The end edge of each of the aforementioned pair of colored regions in the aforementioned length direction overlaps with the end edge of the aforementioned absorbent core in the aforementioned length direction.

17. The absorbent article of claim 1, wherein, The portion of the absorbent core contained in the crotch area has a groove that extends along the center line in the length direction and has a thickness in the thickness direction that is smaller than the surrounding area.

18. The absorbent article of claim 1, wherein, The absorbent article also has a telescopic member for extending or retracting at least a portion of the absorbent core contained in the crotch area and along the centerline in the length direction.

19. A group of absorbent articles comprising the absorbent article of claim 2 and an absorbent pad for use on the absorbent article, wherein, The aforementioned absorbent items are disposable diapers in the form of shorts or straps. When the absorbent pad is installed on the skin side of the absorbent article with the center line passing through the center of the absorbent pad in the width direction, the outer edge of the pair of colored areas in the width direction is located outside the center of the absorbent body in the length direction compared to the outer end of the absorbent pad in the width direction.

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