Absorbent article

Abstract

An absorbent article (10) includes an absorbent core (32) capable of absorbing liquid. In its unfolded and extended state, the absorbent core (32) has a narrow portion (M) whose length in the width direction is smaller than the end portion on one side in the front-back direction. The narrow portion (M) is located at the crotch portion below the crotch of the wearer when worn. On one side, the absorbent core (32) has a pair of fold-inducing portions (43) and a pair of slits (40). The pair of fold-inducing portions (43) are respectively inclined from one side to the other in the front-back direction and from the central portion outward in the width direction. The pair of slits (40) are respectively extended in the front-back direction and are located on both sides in the width direction. In the front-back direction, the slits (40) are respectively located on the other side relative to the fold-inducing portions (43) and each has a portion that overlaps with the narrow portion (M) in the front-back direction. The corresponding end of one side of the slit (40) is located on the other side relative to the end of one side of the narrow portion (M).

Description

Technical Field

[0001] This invention relates to an absorbent article. Background Technology

[0002] Absorbent articles with absorbent cores are widely known. For example, Patent Document 1 discloses an absorbent pad in which the absorbent core has a central region corresponding to the wearer's excretory portion and an outer peripheral region that is thinner and more rigid than the central region, and wherein the absorbent core easily maintains its shape even when subjected to a force pointing inward from the outside in the width direction during use, due to the high rigidity of the outer peripheral region.

[0003] Citation List

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2017-47147 Summary of the Invention

[0006] Technical issues

[0007] In the absorbent pad of Patent Document 1, the absorbent pad is easily deformed because a groove is formed on the non-skin surface side of the absorbent, causing the central area to protrude toward the wearer's skin. However, in this absorbent pad, when the wearer's legs come into contact with the absorbent pad (absorbent core) until the absorbent material is completely pulled up from the foot side to the wearer's crotch, which may cause the central area of ​​the absorbent pad to deform and not protrude toward the wearer's skin, thus causing discomfort to the wearer.

[0008] The present invention is based on the above-mentioned problems, and one aspect of the present invention is to provide an absorbent article that reduces discomfort during wearing absorbent articles.

[0009] Solution to the problem

[0010] A key aspect of the present invention for achieving the above-mentioned aspects is an absorbent article having intersecting front-back, width, and thickness directions. The absorbent article includes a liquid-absorbent core. In an unfolded and stretched state, the core includes a narrow portion whose width direction length is shorter than the width direction length of one end portion in the front-back direction. The narrow portion is disposed in a crotch portion, which is positioned at the crotch of the wearer when the absorbent article is worn. One side of the core in the front-back direction includes a pair of fold-inducing portions and a pair of slits. Each of the pair of fold-inducing portions is inclined from one side to the other in the front-back direction and outward from a central portion in the width direction. The pair of slits extend in the front-back direction and are disposed on both sides in the width direction. In the front-back direction, the slits are positioned on the other side relative to the fold-inducing portions. Each slit has a portion overlapping the narrow portion in the front-back direction, and the end of one side of the slit is positioned on the other side relative to one end of the narrow portion.

[0011] Other features of the invention, in addition to those described above, will become clearer upon reading the description in this specification and by referring to the accompanying drawings.

[0012] Beneficial effects of the present invention

[0013] According to the present invention, discomfort caused by excrement during the wearing of absorbent clothing can be reduced. Attached Figure Description

[0014] Figure 1 : This is a schematic three-dimensional diagram of a disposable diaper 1 shaped like underwear.

[0015] Figure 2 : A schematic plan view of a diaper 1 with absorbent pad 10 in its unfolded and stretched state, viewed from the skin side.

[0016] Figure 3 : A schematic plan view of the absorbent pad 10 in its unfolded and stretched state as seen from the skin side.

[0017] Figure 4 : A schematic plan view of the absorbent pad 10 in its unfolded and stretched state, viewed from the non-skin side.

[0018] Figure 5 : is along Figure 3 A schematic cross-sectional view taken from line S1-S1.

[0019] Figure 6 :yes Figure 3 A schematic plan view of the central absorbent core 32 as viewed from the skin side.

[0020] Figure 7 : This is a schematic three-dimensional diagram illustrating the deformation of the absorbent core 32 when the absorbent pad 10 is worn.

[0021] Figure 8: Figure 8A This is an explanatory schematic diagram illustrating the slit 40 and the folding induction portion 43 in the first embodiment. Figure 8B This is an explanatory schematic diagram of a modified example of the first embodiment. Figure 8C This is an explanatory diagram of another modified example of the first embodiment.

[0022] Figure 9 : A schematic plan view of the absorbent pad 100 in its unfolded and stretched state as viewed from the skin side.

[0023] Figure 10 It is an explanation Figure 9 An explanatory schematic diagram of the front portion 10F of the absorber core 320. Detailed Implementation

[0024] From the description of this specification and the accompanying drawings, at least the following matters can be made clear.

[0025] An absorbent article having intersecting front-back, width, and thickness directions, the absorbent article comprising a liquid-absorbent core, wherein in an unfolded and stretched state, the absorbent core includes a narrow portion, the length of which in the width direction is shorter than the length in the width direction of an end portion on one side in the front-back direction, the narrow portion being disposed in a crotch portion positioned at the crotch of the wearer when the absorbent article is worn, the absorbent core including a pair of fold-inducing portions and a pair of slits on one side in the front-back direction, each of the pair of fold-inducing portions being inclined from one side to the other in the front-back direction and from a central portion outward in the width direction, the pair of slits extending respectively in the front-back direction and disposed on both sides in the width direction, the slits being positioned on the other side relative to the fold-inducing portions in the front-back direction, the slits having portions overlapping the narrow portions in the front-back direction, and the end of one side of the slit being positioned on the other side relative to the end of one side of the narrow portion.

[0026] According to the aforementioned absorbent article, when using it, the folding induction portion induces the slits to fold towards the non-skin side, thus the area inserted between the pair of slits is easily shaped to protrude towards the skin side. This allows the absorbent core to be closer to the wearer's excretory opening, thereby absorbing excrement more quickly and reducing discomfort caused by excrement during the wearing of the absorbent article.

[0027] In absorbent articles, it is desirable that the pair of fold-inducing portions be continuous at the end portion on one side.

[0028] According to the above-mentioned absorbent article, since a pair of folding induction parts are continuous with each other, external force can be easily transmitted to the slit through the folding induction parts, making the slit easy to fold towards the skin side.

[0029] In absorbent articles, it is desirable that each of the fold-inducing portions is a compression portion.

[0030] Based on the above-mentioned absorbent article, an absorbent article can be provided in which the folding-inducing portion is formed by a simple step.

[0031] In an absorbent article, it is desirable that the absorbent article has any of the following: a mating point, at which at least a portion of the end of the other side of the folding induction portion, when viewed along the thickness direction, mates with the edge of one side of the slit; and an intersection point, at which a virtual area obtained by extending the folding induction portion to the other side intersects with the edge of one side of the slit.

[0032] According to the above-mentioned absorbent article, force is easily transmitted from the folding induction portion to the slit at the anastomosis point or intersection point, which makes it easy to induce the slit to fold towards the non-skin side and cause the area inserted between a pair of slits to form a shape that protrudes towards the skin side.

[0033] In absorbent articles, it is desirable that the absorbent article is an absorbent pad, a temporary fixing portion is disposed on the non-skin side surface of the absorbent article, the temporary fixing portion being a portion for detachably fixing the absorbent pad to the skin side surface of a disposable diaper or garment, and either the anastomosis point or the intersection point is disposed inside both ends of the temporary fixing portion in the width direction.

[0034] According to the aforementioned absorbent material, compared to the area of ​​absorbent material on the outer sides of both ends of the temporary fixing portion in the width direction, the area of ​​absorbent material on the inner sides of both ends of the temporary fixing portion in the width direction is further fixed to the disposable diaper or clothing. Therefore, forces from the wearer's legs and forces generated by the lateral contraction of the disposable diaper or clothing are easily transmitted to the slit through the folding induction portion. This makes it easy to induce the slit to fold towards the non-skin side.

[0035] In an absorbent article, it is desirable that on the other side, the absorbent core includes a fold-inducing portion on the other side and a pair of slits, each of the pair of fold-inducing portions on the other side being inclined outward from the central portion in the width direction, and in the front-back direction, the slits being located on one side relative to the fold-inducing portion on the other side, and the end of the slit on the other side being located on one side relative to the end of the narrow portion on the other side.

[0036] According to the aforementioned absorbent article, in addition to the slit on one side in the front-back direction of the absorbent article, the fold-inducing portion on the other side is also induced to fold towards the non-skin side, thereby making it easy for the area inserted between the pair of slits to be formed into a shape protruding towards the skin side. This allows the absorbent article to be worn in either direction in the front-back direction.

[0037] In an absorbent article, it is desirable that when the narrow portion is divided into three equal parts in the front-back direction, namely: a side portion, a central portion, and a other side portion, the side portion is provided with at least a portion of the fold-inducing portion, the central portion is provided with at least a portion of the slit, and the other side portion is provided with at least a portion of the fold-inducing portion on the other side.

[0038] According to the aforementioned absorbent article, the absorbent article can be worn in either the front-back direction. Simultaneously, when wearing the absorbent article, the slits in the central portion in the front-back direction are induced to fold towards the non-skin side by a fold-inducing portion positioned in front of the wearer or on the other side in the front-back direction. This makes it easy for the area inserted between the pair of slits to be shaped to protrude towards the skin side.

[0039] In an absorbent article, it is desirable that the absorbent article has portions in which the narrow portion and the fold-inducing portion overlap with respect to the front-back direction.

[0040] According to the aforementioned absorbent article, when the absorbent article is worn, this allows the shape of the absorbent core to easily change from the folding induction section before folding begins from the slit. Due to the change in shape of the folding induction section, the slit folds towards the non-skin side, making it easy for the area between a pair of slits to form a protruding shape.

[0041] In absorbent articles, it is desirable that the length in the front-back direction of the portion where the narrow portion and the fold-inducing portion overlap is half the length in the front-back direction of the fold-inducing portion.

[0042] According to the aforementioned absorbent article, when the absorbent article is worn, this allows the shape of the absorbent core to easily change from the folding induction portion before folding begins from the slit. This facilitates a fold with a protruding shape extending towards the non-skin side, starting from the slit, due to the change in shape of the folding induction portion.

[0043] In absorbent articles, it is desirable that the length of the slit in the front-back direction is longer than the length of the folding induction portion in the front-back direction.

[0044] According to the above-mentioned absorbent articles, compared with the case where the length of the folding induction part in the front-back direction is longer than the length of the slit in the front-back direction, the excrement absorbed by the absorbent core is more likely to diffuse in the front-back direction of the absorbent core due to the slit extending in the front-back direction.

[0045] In absorbent articles, it is desirable that the absorbent core includes a pair of notched portions, and the notched portions are disposed in the side end portions in the width direction and located on one side relative to the fold-inducing portion.

[0046] According to the aforementioned absorbent article, when worn, the fold-inducing portion induces the slits to fold towards the non-skin side, which makes it easy for the area inserted between the pair of slits to be shaped to protrude towards the skin side. The notch portion is located on one side relative to the fold-inducing portion, which makes it easy for the portion of the absorbent core located on one side relative to the fold-inducing portion to be shaped to follow the bulge of the wearer's abdomen.

[0047] In the absorbent article, it is desirable that the absorbent article further includes: a pair of stretching members that stretch and contract in the front-back direction; and a folding portion for folding the absorbent article in the front-back direction and extending in the width direction, the pair of stretching members being located outside the slit in the width direction and on the non-skin side relative to the absorbent core, and passing through the folding portion.

[0048] According to the aforementioned absorbent articles, the portion of the absorbent core located outside the slit in the width direction is easily pulled up by the stretching member when worn. Therefore, the risk of excrement leaking from the outer side of the absorbent core in the width direction can be reduced.

[0049] In absorbent articles, it is desirable that the length of the stretching region of the stretching member in the front-back direction is shorter than the length of the narrow portion in the front-back direction.

[0050] According to the above-mentioned absorbent articles, the risk of deformation of the absorbent core caused by the fold-inducing portion and slits can be reduced due to the tensile / contraction forces of the tensile members.

[0051] In absorbent articles, it is desirable that the slit extends from one side to the other, and that the length of the stretching region of the stretching member in the front-back direction is shorter than the length of the slit in the front-back direction.

[0052] According to the above-mentioned absorbent articles, the risk of deformation of the absorbent core caused by the fold-inducing portion and slits can be reduced due to the tensile / contraction forces of the tensile members.

[0053] First Embodiment

[0054] The following describes an embodiment of the "absorbent article" of the present invention, using absorbent pad 10 as an example. Absorbent pad 10 is used to attach to the inside (skin side) of an adult underwear-shaped disposable diaper 1 (hereinafter also referred to as "diaper 1"). Diaper 1 and absorbent pad 10 are separate components.

[0055] Underwear-shaped disposable diaper 1

[0056] Figure 1 This is a schematic 3D diagram of diaper 1. Figure 2 This is a schematic plan view of the diaper 1 in its unfolded and stretched state, with the absorbent pad 10 attached, as viewed from the skin side. The diaper 1 is a pant-like disposable diaper, belonging to the so-called two-piece diaper category. The diaper 1 has a front waist portion 1A positioned in front of the wearer, a back waist portion 1B positioned behind the wearer, and a crotch portion 1C positioned at the wearer's crotch. The diaper 1 includes an outer body 2 constituting the front waist portion 1A and the back waist portion 1B, and an absorbent body 3 having an absorbent core 4 for absorbing urine and other excrement. In this embodiment, a configuration in which the absorbent pad 10 is attached to the inside of the two-piece pant-like diaper 1 will be described. However, this configuration is not limited to this one. The absorbent pad 10 can be arranged inside a so-called three-piece pant-like disposable diaper having separate front waist portions 1A and back waist portions 1B, or the absorbent pad can be arranged inside a patch-type disposable diaper.

[0057] The absorbent pad 10 is attached to the diaper 1 so that the diaper 1 can be used continuously, that is, by changing only the absorbent pad 10 after the wearer excretes. Therefore, the diaper 1 can be used for a longer period of time.

[0058] Absorbent Pad 10

[0059] Figure 3 This is a schematic plan view of the absorbent pad 10 in its unfolded and stretched state, as viewed from the skin side. Figure 4 This is a schematic plan view of the absorbent pad 10 in its unfolded and stretched state, viewed from the non-skin side. Figure 5 It is along Figure 3A schematic cross-sectional view taken along line S1-S1. The absorbent pad 10 has intersecting front-back, width, and thickness directions. In the front-back direction, the side corresponding to the wearer's abdomen is the front side, and the side corresponding to the wearer's back is the back side. Furthermore, when wearing the absorbent pad, the side corresponding to the wearer's torso is defined as the upper side, and the side corresponding to the wearer's groin is defined as the lower side. Note that the vertical direction is consistent with the front-back direction. In the thickness direction, the side in contact with the wearer's body is defined as the skin side, and the opposite side is defined as the non-skin side. Figure 3 In similar diagrams, the center line CC represents the center in the width direction, and the center line CL represents the center in the front-to-back direction. In the front-to-back direction, the portion of the absorbent pad 10 positioned on the front side relative to the center line CL is also called the front portion 10F, and the portion positioned on the back side relative to the center line CL is also called the rear portion 10R.

[0060] The "unfolded state" of the absorbent pad 10 refers to the state in which the absorbent pad 10 is fully unfolded. The "stretched state" refers to the state in which the absorbent pad 10 is stretched to eliminate wrinkles. Specifically, it refers to the state in which the absorbent pad 10 is stretched to the point that the dimensions of the constituent components of the absorbent pad 10 (such as the side panels 50 described later) match or are close to the dimensions of these components themselves.

[0061] like Figures 3 to 5 As shown, the absorbent pad 10 has a generally rectangular shape in the plan view, and its shape is approximately symmetrical with respect to the center line CC in the width direction and approximately symmetrical with respect to the center line CL in the front-to-back direction. The absorbent pad 10 includes a skin side panel 20, a non-skin side panel 22, an absorbent body 30, a side panel 50, a leg stretching member 54, and a hook 25.

[0062] The skin-side sheet 20 is a liquid-permeable sheet component made of a hydrophilic, breathable nonwoven fabric sheet, spunbond nonwoven fabric sheet, or similar material. The skin-side sheet 20 covers the entire skin-side surface of the absorbent 30. The non-skin-side sheet 22 is a liquid-impermeable sheet component, for example, using a suitable resin film such as polyethylene (PE). The non-skin-side sheet 22 covers the entire non-skin-side surface of the absorbent 30.

[0063] The absorbent 30 has an absorbent core 32 and a liquid-permeable core sheet 34, which is made of thin cotton paper or non-woven fabric and covers the absorbent core 32. The absorbent core 32 absorbs excrement, such as urine and feces, and is obtained by forming liquid-absorbent fibers (such as pulp) or liquid-absorbent particles (such as superabsorbent polymer (SAP)) into a predetermined shape. The shape and characteristics of the absorbent core 32 will be described later.

[0064] Side panels 50 are provided on both sides of the skin side panel 20 and the non-skin side panel 22 in the width direction. The side panels 50 extend outward in the width direction, beyond the two ends of the absorbent body 30 in the width direction. In the folded position (the two ends of the absorbent pad 10 in the width direction), the side panels 50 are folded inward in the width direction and towards the skin side in the thickness direction, forming a pair of leak-proof wall portions 51. In the leak-proof wall portions 51, leak-proof wall tension members 52 and 52 (such as elastic cords) are fixed in a stretched state along the front-back direction of the absorbent pad 10. The contraction of these leak-proof wall tension members 52 and 52 in the front-back direction causes the pair of leak-proof wall portions 51 to rise towards the skin side at the two end portions of the absorbent pad 10 in the width direction. In this way, the leak-proof wall portions serve as leak-proof walls (leg-side gathering) for the absorbent pad 10. It should be noted that this configuration is also acceptable, i.e., without the side panels 50, the leak-proof wall portions 51 are formed by extending the non-skin side panel 22 in the width direction to the outside of the absorbent body 30. Alternatively, a structure without the leak-proof wall section 51 can be adopted.

[0065] Leg stretching members 54 are disposed at their two end portions in the width direction between the non-skin side surface of the non-skin side panel 22 and the skin side surface of the side panel 50. Each of the leg stretching members 54 is a stretching member such as an elastic rope capable of stretching and contracting in the anteroposterior direction, and the leg stretching members 54 provide elasticity around the leg to form a leg gathering portion. Note that in Figure 3 In the above, the stretching area of ​​the leg stretching member 54 that can stretch and contract is shown as the leg stretching member 54.

[0066] like Figure 4 As shown, the hooks 25 are temporary fixing portions for detachably securing the absorbent pad 10 to the skin-side surface of the diaper 1, and are disposed on the non-skin-side surface of the absorbent pad 10 (the non-skin-side surface of the non-skin-side piece 22). In this embodiment, the hooks 25 are hook-and-loop fasteners. However, conventionally known adhesive methods, such as hot melt adhesive, double-sided tape, etc., can be used as temporary fixing portions. Furthermore, the hooks 25 can be used not only to temporarily fix the absorbent pad 10 to the diaper 1, but also to temporarily fix the absorbent pad 10 to the skin-side surface of underwear or other clothing.

[0067] Clothing status

[0068] Generally, it is known that by making the central portion of an absorbent material protrude towards the skin in the width direction when worn, the absorbent material (core) can come into contact with the wearer's excretory opening, thereby quickly absorbing excrement and easily reducing discomfort when wearing it. However, traditional absorbent materials, during use and when worn, pose a risk of deformation (core) into a shape contrary to the wearer's intention when the wearer's legs exert force from the outside to the inside in the width direction. In particular, the core is one of the thicker components of an absorbent material and has high rigidity; therefore, once the core deforms into a shape contrary to the wearer's intention, so-called creases are formed, and this deformation is not easily corrected. Thus, there is a risk that the core may continuously cause discomfort or unpleasantness to the wearer.

[0069] In contrast, in the absorbent pad 10 of this embodiment, the absorbent core 32 is designed to be easily deformed to be close to the wearer's excretion opening, thereby reducing discomfort or unpleasantness during use. The absorbent core 32 will be described below.

[0070] Absorption Core 32

[0071] Figure 6 yes Figure 3 A schematic plan view of the central absorbent core 32 as seen from the skin side. (See diagram below.) Figure 6 As shown, the absorbent core 32 is substantially hourglass-shaped in plan view, and its shape is substantially symmetrical with respect to the center line CC in the width direction and substantially symmetrical with respect to the center line CL in the front-back direction. Furthermore, the absorbent core 32 includes a narrow portion M, the length of which in the width direction is shorter than the lengths of the front and rear portions in the width direction. During use, the narrow portion M is located in the crotch area of ​​the wearer. Specifically, the narrow portion M is a portion that narrows and curves inward from the front and rear portions in the front-back direction towards the central portion in the front-back direction, thereby giving the absorbent core 32 the shortest length in the width direction at the central portion in the front-back direction. "Narrow portion M" refers to a region whose length in the width direction is shorter than the length of the portion of the absorbent core 32 with the longest length in the width direction. The narrow portion M includes the central portion (center line CL) in the front-back direction. "Front portion in the front-back direction" refers to the longest portion in the width direction of the front portion 10F, which is located in front relative to the narrow portion M. "Rear portion in the front-back direction" refers to the longest portion in the width direction of the rear portion 10R, which is located in back relative to the narrow portion M. Figure 6As shown, regarding the length in the width direction, the front end portion and the rear end portion in the front-rear direction are the longest portions in the width direction of the absorption core 32 (front portion 10F and rear portion 10R), while the width direction length of the narrow portion M is shorter than the width direction length of the front end portion and the rear end portion in the front-rear direction. It should be noted that, as... Figure 6 As shown, the front end of the narrow portion M is defined as the front end Mf, and the rear end of the narrow portion M is defined as the rear end Mr. It should be noted that the side facing forward relative to the narrow portion M (front end Mf) is called the front part F, and the side facing backward relative to the narrow portion M (rear end Mr) is called the rear part R. The front part F is the front end portion in the front-back direction, and the rear part R is the rear end portion in the front-back direction.

[0072] The length of the narrow portion M in the front-to-back direction is preferably 125 mm or longer. Therefore, when wearing the absorbent pad, deformation of the absorbent core 32 can be prevented from starting at the slit 40 before deformation is caused by the fold-inducing portion 43, and the risk of the absorbent core 32 deforming into a shape contrary to the wearer's intention can be reduced.

[0073] The absorbent core 32 includes a pair of fold-inducing portions 43. On the front side, i.e., the front portion 10F, in the front-rear direction of the absorbent core 32, front fold-inducing portions (fold-inducing portions on one side) 43fa and 43fb are provided as fold-inducing portions 43. On the rear side, i.e., the rear portion 10R, in the front-rear direction of the absorbent core 32, rear fold-inducing portions (fold-inducing portions on the other side) 43ra and 43rb are provided as fold-inducing portions 43. Forming the fold-inducing portions 43 by compression increases the density of the liquid absorbent fibers, making their stiffness higher than that of areas without fold-inducing portions 43. Furthermore, the fold-inducing portions 43 can be formed through simple steps. In this embodiment, the fold-inducing portions 43 are all compression portions obtained by compressing the absorbent core 32 from the non-skin side to the skin side in the thickness direction. It should be noted that the fold-inducing portions 43 formed by compression can be compression portions obtained by compressing the absorbent core 32 from the skin side to the non-skin side in the thickness direction. The absorbent core 32 is compressed from the non-skin side to the skin side, making the folding induction portion 43 easy to fold so that the absorbent core 32 protrudes from the skin side to the non-skin side.

[0074] The absorbent core 32 includes a pair of slits 40. As slits 40, the front portion 10F of the absorbent core 32 has slits 40fa and 40fb, and the rear portion 10R has slits 40ra and 40rb. Each slit 40 is a penetrating portion that penetrates the absorbent core 32 along its thickness direction. It should be noted that the slits 40 can be portions completely devoid of liquid absorbent fibers (such as pulp) or liquid absorbent particles (such as superabsorbent polymer (SAP)), or portions containing some liquid absorbent fibers or liquid absorbent particles. Each slit 40 is a portion where the number of liquid absorbent fibers or liquid absorbent particles is significantly less than the surrounding area and its stiffness is lower than the surrounding area.

[0075] In this embodiment, the slits 40 are configured as follows: slits 40fa and 40ra on one side of the width direction (left side when viewed from the skin side surface) are continuous, and slits 40fb and 40rb on the other side of the width direction (right side when viewed from the skin side surface) are continuous. The continuous slits 40fa and 40ra, as well as the continuous slits 40fb and 40rb, cross the center in the front-rear direction. Since the slits 40fa of the front portion 10F and 40ra of the rear portion R are continuous, and the slits 40fb of the front portion 10F and 40rb of the rear portion R are continuous, folding easily occurs at the slits 40. This makes the region X between the slits 40fa, 40ra and the slits 40fb, 40rb easily become a shape protruding towards the skin side.

[0076] The width (thickness) of the slit 40 is preferably 3 mm or more, and the total length of the slit 40 in the front-to-back direction is preferably 80 mm or more. This makes it easy for the absorbent core 32 to deform starting from the slit 40, and also makes it easy for the slit 40 to diffuse the excrement absorbed by the absorbent core 32 in the front-to-back direction.

[0077] The construction of the front part 10F is similar to that of the rear part 10R, so the construction of the front part 10F will be described below.

[0078] The fold-inducing portions 43 are portions used to induce deformation caused by the folding of the absorber core 32, and are portions with stiffness different from that of adjacent regions. In this embodiment, since the fold-inducing portions 43 are formed by compressing the absorber core 32 along the thickness direction, the stiffness of the fold-inducing portions 43 is higher than that of the adjacent regions. Therefore, the fold-inducing portions 43 are portions that are likely to become the starting point of deformation of the absorber core 32.

[0079] The front folding guide portion 43fa slopes outward from the front to the rear in the front-to-back direction and outward from the center in the width direction. Specifically, as... Figure 6As shown, the front folding guide portion 43fa is a generally straight area with a predetermined width (thickness) and slopes downward to the left from the center in the width direction. Similarly, the front folding guide portion 43fb slopes from the front to the rear in the front-rear direction and from the center outward in the width direction. Specifically, the front folding guide portion 43fb is a generally straight area with a predetermined width (thickness) and slopes downward to the right from the center in the width direction.

[0080] Slits 40fa and 40fb extend in the front-rear direction and are disposed on both sides in the width direction. In this embodiment, slits 40fa and 40fb include a straight portion in the front side of the front portion 10F in the front-rear direction and a curved portion in the rear side of the front-rear direction that bends outward in the width direction. Slits 40fa and 40fb are portions that penetrate the absorber core 32 in the thickness direction, and therefore have lower stiffness than adjacent regions. Therefore, slits 40fa and 40fb are portions that are prone to becoming the starting point for deformation of the absorber core 32.

[0081] In the front-to-back direction, the slit 40 is located rearward relative to the folding induction portion 43. The slit 40 has a portion that overlaps with the narrow portion M in the front-to-back direction, and the front end of the slit 40 is located rearward relative to the front end of the narrow portion M. Therefore, the absorbent core 32 is easily folded when the absorbent pad is worn. Figure 7 It deforms as shown. Figure 7 It is a schematic three-dimensional diagram illustrating the deformation of the absorbent core 32 when the absorbent pad 10 is worn.

[0082] In this embodiment, as Figure 6 As shown, in the front-rear direction, slits 40fa and 40fb are located behind the front folding induction portions 43fa and 43fb. That is, the portion of the compression portion located in front of slits 40fa and 40fb is the front folding induction portion 43fa and 43fb. Furthermore, slits 40fa and 40fb are integrally disposed within the narrow portion M, so the entire area of ​​slits 40fa and 40fb overlaps with the narrow portion M in the front-rear direction, and the front ends of slits 40fa and 40fb are located behind the front end Mf of the narrow portion M.

[0083] The following describes the deformation of the absorbent core 32 when the absorbent pad 10 is worn. When the absorbent pad 10 is worn, the deformation of the absorbent core 32 is mainly caused by the force applied to the absorbent core 32 (absorbent pad 10) from the wearer's legs or by the force applied to the absorbent core 32 (absorbent pad 10) from the outside (diaper 1 or clothing, etc.).

[0084] First, when the absorbent pad 10 is put on, as it attaches to the inside of the diaper 1, the front portion of the front part 10F and the rear portion of the rear part 10R of the absorbent pad 10 deform and rise toward the skin due to the annular shape of the waist portion that constitutes the diaper 1 (clothing). This makes it easy for the front folding induction portions 43fa and 43fb to fold toward the non-skin side.

[0085] Then, when the diaper 1 with the absorbent pad 10 attached is pulled up from the foot side toward the wearer's crotch, Figure 1 When the absorbent core 32 includes a narrow portion M, the risk of the wearer's leg contacting the central portion of the absorbent core 32 in the front-rear direction before the portion of the absorbent core 32 located in front of the slits 40fa and 40fb comes into contact with the slits 40fa and 40fb is subjected to a force applied from the outside to the inside in the width direction. When the area of ​​the absorbent core 32 located in front of the slits 40fa and 40fb is subjected to a force applied from the outside to the inside in the width direction, the front fold-inducing portions 43fa and 43fb located in front of the slits 40fa and 40fb are prone to deformation, thereby folding towards the non-skin side. Therefore, the front fold-inducing portions 43fa and 43fb are more likely to fold towards the non-skin side.

[0086] Furthermore, when the absorbent pad 10 (diaper 1) is pulled up to the wearer's crotch, and a force is applied from the outside to the inside in the lateral direction by the wearer's legs to the narrow portion M where the slits 40fa and 40fb are located, the slits 40fa and 40fb, which overlap with the narrow portion M in the front-to-back direction, are easily deformed. When a force is applied to the narrow portion M from the outside in the lateral direction, due to the deformation of the front fold induction portions 43fa and 43fb folding towards the non-skin side, external forces such as the force generated by the diaper 1 or the force generated by the wearer's legs (hereinafter also referred to as "external forces") are transmitted from the front fold induction portions 43fa and 43fb to the slits 40fa and 40fb. This makes it easier to induce the slits 40fa and 40fb to deform towards the non-skin side. In other words, this reduces the risk of the slits 40fa and 40fb, which are located on the rear side relative to the front fold induction portions 43fa and 43fb folding towards the non-skin side, folding towards the skin side, and makes it easier for the slits 40fa and 40fb to fold towards the non-skin side.

[0087] like Figure 7 As shown, by folding slits 40fa and 40fb toward the non-skin side, the area X between slits 40fa and 40fb in the front-to-back direction can be formed into a shape that protrudes toward the skin. This protruding shape of area X makes the absorbent pad closer to the wearer's excretory opening and allows it to better conform to the opening, thus absorbing excrement quickly. This reduces discomfort to the wearer caused by excrement residue on the surface of the absorbent pad 10.

[0088] Figure 8AThis is an explanatory schematic diagram illustrating the slit 40 and the folding induction portion 43 in the first embodiment. (See diagram for reference.) Figure 8A As shown, an anastomosis point G is preferably provided, at which at least a portion of the anterior folding induction portions 43fa and 43fb abuts the edges of the slits 40fa and 40fb. The anastomosis point G facilitates the transmission of external force from the anterior folding induction portion 43fa to the slit 40fa, and from the anterior folding induction portion 43fb to the slit 40fb. This facilitates the induction of folding of the slits 40fa and 40fb towards the non-skin side, and facilitates the protrusion of the region X between the slits 40fa and 40fb towards the skin side. It should be noted that the compression portion constituting the anterior folding induction portions 43fa and 43fb can be located on the posterior side relative to the front end of the slits 40fa and 40fb. Here, in this embodiment, the folding induction portion 43 is the portion located anteriorly relative to the anastomosis point abutting with the slit 40fa or 40fb.

[0089] Furthermore, as described above, the absorbent pad 10 has hooks 25 on its non-skin-side surface. For example... Figure 3 As shown, preferably, the matching points G where the front folding guiding portions 43fa and 43fb mate with the edges of the slits 40fa and 40fb are provided on the inner sides of both ends of these hook portions 25 in the width direction. Compared to the area of ​​the absorbent pad 10 located on the outer sides of both ends of these hook portions 25 in the width direction, the area of ​​the absorbent pad 10 located on the inner sides of both ends of these hook portions 25 in the width direction is further secured to the diaper 1. Therefore, by providing the matching points G on the inner sides of both ends of these hook portions 25 in the width direction, external force can be easily transmitted to the slits 40fa and 40fb through the front folding guiding portions 43fa and 43fb, thereby making it easy to fold the slits 40fa and 40fb towards the non-skin side. This makes the area X between the slits 40fa and 40fb easily protrude towards the skin side.

[0090] Preferably, such as Figure 6 and Figure 8A As shown, the anterior folding guiding portions 43fa and 43fb are continuous at their anterior ends. By making the anterior folding guiding portions 43fa and 43fb continuous, external forces (such as those generated by the diaper 1 or the wearer's legs) can be easily transmitted through the anterior folding guiding portions 43fa and 43fb to the slits 40fa and 40fb. The slits 40fa and 40fb fold towards the non-skin side, making the area X between the slits 40fa and 40fb easily protrude towards the skin side.

[0091] Preferably, there exists a portion in which the narrow portion M overlaps with the front folding induction portions 43fa and 43fb in the front-rear direction. More preferably, the length in the front-rear direction of the portion of the narrow portion M that overlaps with the front folding induction portions 43fa and 43fb is half the length in the front-rear direction of the front folding induction portions 43fa and 43fb. Figure 6 As shown, in this embodiment, the entire area of ​​the front fold-inducing portions 43fa and 43fb overlaps with the narrow portion M relative to the front-back direction. By making the narrow portion M overlap with the front fold-inducing portions 43fa and 43fb relative to the front-back direction, the risk of the absorbent pad 10 folding from the slits 40fa and 40fb before the front fold-inducing portions 43fa and 43fb fold when the absorbent pad 10 is worn is reduced. First, this makes it easier to induce the absorbent core 32 to deform from the front fold-inducing portions 43fa and 43fb, and subsequently, due to the folding of the front fold-inducing portions 43fa and 43fb, the slits 40fa and 40fb are induced to fold towards the non-skin side. Therefore, the area X sandwiched between the slits 40fa and 40fb is easily formed into a shape that protrudes towards the skin side.

[0092] It should be noted that the length in the front-to-back direction between the front ends of the anterior folding induction portions 43fa and 43fb and the front end Mf (i.e., the front end of the narrow portion M) is preferably 30 mm or less. In this case, external force is more likely to act first on the deformation of the anterior folding induction portions 43fa and 43fb, making it easier for the deformation of the anterior folding induction portions 43fa and 43fb to induce the slits 40fa and 40fb to fold towards the non-skin side.

[0093] like Figure 6 As shown, the length L40f of slits 40fa and 40fb in the front-rear direction is preferably longer than the length L43f of the front folding induction portions 43fa and 43fb in the front-rear direction (L40f>L43f). Since slits 40fa and 40fb extend in the front-rear direction, compared to the case where the length L43f of the front folding induction portions 43fa and 43fb in the front-rear direction is longer than the length L40f of the slits 40fa and 40fb in the front-rear direction, the excrement absorbed by the absorbent core 32 is more easily diffused in the front-rear direction of the absorbent core 32. Therefore, excrement is easily absorbed over a large area of ​​the absorbent core 32.

[0094] like Figure 3As shown, the absorbent pad 10 in a packaged state or a similar state before use is folded in the front-back direction at a folding portion H that extends in the width direction and is provided at a central portion including the center in the front-back direction. Further, the absorbent pad 10 also includes a pair of leg stretching members 54 that stretch and contract in the front-back direction on both sides in the width direction. This pair of leg stretching members 54 is preferably provided at positions that are located outside the slits 40fa and 40fb in the width direction and pass through the folding portion H. Thus, the portions of the absorbent pad 10 that are located outside the slits 40fa and 40fb in the width direction are easily lifted by the leg stretching members 54, and the absorbent pad 10 (absorbent core 32) can form an arc shape, so that when observing the absorbent pad 10 (absorbent core 32) in a worn state in the front-back direction, the two side end portions in the width direction are located above the central portion in the width direction. This can reduce the risk of excrement leaking from the outer sides in the width direction of the absorbent core 32. It should be noted that in this embodiment, two leg stretching members 54 are provided on each of the two sides in the width direction. However, a configuration in which one leg stretching member 54 is provided on each of the two sides in the width direction is also acceptable, and the number of leg stretching members 54 can be any number.

[0095] The length T54 in the front-back direction of the stretching region of the leg stretching member 54 is preferably shorter than the length TM in the front-back direction of the narrow portion M (T54 < TM). This can reduce the risk that the stretching / contracting force of the leg stretching member 54 hinders the deformation of the absorbent core 32 caused by the front-side folding induction portions 43fa and 43fb and the slits 40fa and 40fb, as well as the risk of generating a deformation of the absorbent core 32 contrary to the intention.

[0096] In addition, the slits 40fa and 40fb provided in the front-side portion 10F extend to the rear side of the absorbent core 32 and are respectively continuous with the slits 40ra and 40rb. More preferably, the length T54 in the front-back direction of the stretching region of the leg stretching member 54 is shorter than the length T40 of the continuous slits 40fa, 40ra in the front-back direction and the length T40 of the continuous slits 40fb, 40rb. This can further reduce the risk that the stretching / contracting force of the leg stretching member 54 hinders the deformation of the absorbent core 32 caused by the front-side folding induction portions 43fa and 43fb and the slits 40fa and 40fb, as well as the risk of generating a deformation of the absorbent core 32 contrary to the intention.

[0097] As Figure 6As shown, the absorbent core 32 includes a pair of notched portions 38 in the front portion 10F. The notched portions 38 in the front portion 10F are located in the side end portion in the width direction and are positioned in front of the front fold-inducing portions 43fa and 43fb. In this embodiment, the portion below the notched portion 38 is the narrow portion M, and the portion in front of the notched portion 38 is the front portion F. The notched portions 38 in the front portion 10F facilitate the shaping of the region X, inserted between the pair of slits 40fa and 40fb, into a shape protruding towards the skin due to the inducing effect of the front fold-inducing portions 43fa and 43fb. Simultaneously, the front portion F is easily pulled towards the skin by deformation starting from the notched portion 38 in front of the front fold-inducing portions 43fa and 43fb. This makes it easy for the front portion F to be shaped to fit the wearer's abdomen.

[0098] In addition, such as Figure 6 and Figure 8A As shown, in the absorbent pad 10 (absorbent core 32), not only the front portion 10F, but also the rear portion 10R has slits 40ra and 40rb, as well as rear fold-inducing portions 43ra and 43rb. Figure 6 As shown, similarly in the rear portion 10R, in the front-to-back direction, the slits 40ra and 40rb are positioned on the front side relative to the rear folding induction portions 43ra and 43rb. The slits 40ra and 40rb have portions that overlap with the narrow portion M in the front-to-back direction, and the rear ends of the slits 40ra and 40rb are positioned on the front side relative to the rear ends of the narrow portion M. Therefore, even if the absorbent pad 10 is worn in opposite directions in the front-to-back direction, the absorbent core 32 is prone to... Figure 7 The deformation shown allows the absorbent pad 10 to be worn in any direction in the front-to-back direction.

[0099] Similar to the front portion 10F, the absorbent core 32 also includes a pair of notched portions 38 in the rear portion 10R. The notched portions 38 in the rear portion 10R are located at the side ends in the width direction and are situated rearward relative to the rear folding induction portions 43ra and 43rb. Therefore, even if the absorbent pad 10 is worn in opposite directions in the front-back direction, the area X inserted between the pair of slits 40ra and 40rb is easily shaped into a shape protruding towards the skin due to the induction effect generated by the rear folding induction portions 43ra and 43rb. Simultaneously, the rear portion R is easily pulled towards the skin by deformation starting from the notched portions 38. This makes it easy for the rear portion R to conform to the shape of the wearer's abdomen.

[0100] In addition, such as Figure 6As shown, preferably, when the narrow portion M is divided into three equal parts in the front-rear direction, namely the front portion M1, the central portion M2, and the rear portion M3, the front portion M1 is provided with at least a portion of the front fold-inducing portions 43fa and 43fb, the central portion M2 is provided with at least a portion of the slits 40fa, 40fb, 40ra, and 40rb, and the rear portion M3 is provided with at least a portion of the rear fold-inducing portions 43fa and 43fb. Therefore, when the absorbent pad 10 is worn in opposite front-rear directions, the slits 40fa, 40fb, 40ra, and 40rb are easily induced to fold towards the non-skin side by the front fold-inducing portions 43fa and 43fb located in front of the wearer or by the rear fold-inducing portions 43ra and 43rb. This makes it easy for the area X inserted between the slits 40fa, 40ra and the slits 40fb, 40fb to be shaped to protrude towards the skin side.

[0101] The folding guide portion 43 and the slit 40 can have, for example Figure 8B and 8C The structure shown. Figure 8B and Figure 8C This is an explanatory diagram illustrating a modified example of the first embodiment.

[0102] like Figure 8B As shown, the left-side front folding guiding portion 43fa and the right-side front folding guiding portion 43fb in the width direction can be spaced apart from each other and are discontinuous. Specifically, the front end of the front folding guiding portion 43fa and the end of the front folding guiding portion 43fb are spaced apart by a predetermined distance. Even in this case, the front folding guiding portions 43fa and 43fb still transmit external forces to the slits 40fa and 40fb, respectively. This causes the slits 40fa and 40fb to fold towards the non-skin side, making the absorbent core 32 easily deformable so that the region X between the slits 40fa and 40fb protrudes towards the skin side.

[0103] The following structures can be used: such as Figure 8C As shown, no matching point G is provided where the front folding guiding portions 43fa and 43fb coincide with the slits 40fa and 40fb, respectively, and the front folding guiding portions 43fa and 43fb are spaced apart from the slits 40fa and 40fb, respectively. In this case, it is preferable to provide an intersection point J, at which a virtual region 43v obtained by extending the front folding guiding portion 43fa rearward intersects with the front edge of the slit 40fa, and simultaneously, at another intersection point J, at which a virtual region 43v obtained by extending the front folding guiding portion 43fb rearward intersects with the front edge of the slit 40fb. Figure 8CIn the diagram, the virtual region 43v is represented by a dashed line. Therefore, due to the folding of the anterior folding induction portions 43fa and 43fb, external force is transmitted to the slits 40fa and 40fb, causing them to fold towards the non-skin side. This makes the absorbent core 32 prone to deformation, causing the region X between the slits 40fa and 40fb to protrude towards the skin side.

[0104] In addition, Figures 8A to 8C The text describes front folding induction portions 43fa and 43fb, which have a continuous shape from front to back, but their construction is not limited to this. The following construction is possible: the front folding induction portion 43fa is a collection of intermittently compressed portions, and the front folding induction portion 43fb is a collection of intermittently compressed portions.

[0105] Second Embodiment

[0106] Absorbent pad 100

[0107] Figure 9 This is a schematic plan view of the absorbent pad 100 in its unfolded and stretched state, as viewed from the skin side. Figure 10 It is an explanation Figure 9 An explanatory schematic diagram of the front portion 10F of the absorbent core 320 is shown. The following will primarily describe the parts of the absorbent pad 100 according to the second embodiment that differ from the first embodiment. Parts identical in construction to those of the first embodiment will be indicated by the same or similar reference numerals, and detailed descriptions of the basic construction of the absorbent pad 100 will not be repeated. Furthermore, certain constructions of the absorbent pad 10 of the first embodiment can also be used in the absorbent pad 100 of the second embodiment.

[0108] Similar to the first embodiment, the absorbent pad 100 of the second embodiment includes a skin side sheet 20, a non-skin side sheet 22, an absorbent body 30, a side sheet 50, a leg stretching member 54, and a hook portion 25. Similar to the first embodiment, the absorbent core 320 includes a narrow portion M, a pair of slits 40, and a folding induction portion 43 having a predetermined width (thickness) and formed by a plurality of compression portions 45.

[0109] In the second embodiment, the absorber core 320 is provided with substantially grid-like compression portions 45 throughout substantially the entire region, except for the central region Z located in the central portion in the front-to-back direction and the central portion in the width direction. The compression portions 45 have discontinuous portions in both the width and front-to-back directions. The region where the compression portions 45 are provided has high stiffness, and a stiffness difference is generated between the region where the compression portions 45 are provided and adjacent regions where the compression portions 45 are not provided. In the second embodiment, the compression portions 45 are not provided in the central region Z, and the compression portions 45 are not provided in the region between the pair of slits 40 in the width direction of the absorber core 320.

[0110] In the second embodiment, the folding-inducing portion 43 is a portion with different stiffness between adjacent compression portions 45 and regions where no compression portions 45 are provided. Specifically, the folding-inducing portion 43 is a portion with different stiffness between adjacent compression portions 45 and the central region Z. Because the absorbing core 32 is compressed in the thickness direction, its stiffness is higher than that of the adjacent regions. Figure 10 In the second embodiment, the folding induction portion 43 is a compression portion 45 disposed in the area surrounded by the virtual line 43w, and is a portion that is prone to deformation. Figure 10 As shown, each compression portion 45 (folding induction portion 43) slopes outward from the center in the width direction, from the front to the rear. Therefore, the folding induction portion 43 transmits external force to the slits 40fa and 40fb, inducing them to fold towards the non-skin side. This makes the region X between the slits 40fa and 40fb prone to protruding towards the skin side, making the absorbent core 32 easily deformable. Figure 7 The shape shown.

[0111] Furthermore, in the second embodiment, the absorbent core 32 has a generally grid-like compression portion 45 throughout almost the entire region except for the central region Z. Due to the intermittent presence of highly rigid portions, the compression portion 45 is a thinner portion of the absorbent core 32 (shorter in the thickness direction) and is easily used as a starting point for folding. That is, in the region of the absorbent core 32 in the second embodiment, excluding the central region Z, the absorbent core 32 is easily deformed by a pair of slits 40 and the compression portion 45. This makes it easy for external forces to be transmitted to the slits 40fa and 40fb through the folding induction portion 43 when the diaper is worn, making the slits 40fa and 40fb easily induced to fold towards the non-skin side. Therefore, the central region Z between the slits 40fa and 40fb easily protrudes towards the skin side. Furthermore, since the area between the slits 40fa and 40fb protruding towards the skin side is the central region Z where the compression portion 45 is not provided, the central region Z easily approaches the wearer's excretory opening and maintains a flat surface. This makes excrement easier to absorb quickly, while also enhancing the tactile sensation at the excretion opening, thus reducing unpleasantness or discomfort while wearing diapers.

[0112] It should be noted that the construction of the absorbent core 32 in the second embodiment is not necessarily limited to the case where no compression portion 45 is provided in the central region Z. For example, a compression portion similar to the compression portion 45 provided in the front part F or the rear part R can be provided between a pair of slits 40fa and 40fb. Even when a compression portion is provided between a pair of slits 40fa and 40fb, by providing a portion of different stiffness between the compression portion 45 and the region adjacent to the compression portion but without a compression portion, the folding induction portion 43 can induce the slits 40fa and 40fb to fold towards the non-skin side. This makes it easier for the region between the slits 40fa and 40fb to protrude towards the skin side. Furthermore, providing a compression portion over a larger area of ​​the absorbent core 32 allows for a reduction in the thickness (length in the thickness direction) of the absorbent core 32, and due to the increased stiffness of the entire absorbent core 32, it is easier to promote the deformation of the absorbent core 32.

[0113] Other implementation plans

[0114] Although the above embodiments of the present invention have been described, the embodiments described above are only for the purpose of understanding the present invention and are not intended to limit the interpretation of the present invention.

[0115] Furthermore, the present invention can be modified or improved without departing from the spirit of the present invention, and it goes without saying that equivalents of the present invention are included in the present invention.

[0116] In the above embodiments, the absorbent article of the present invention is described as an absorbent pad 10, which is disposed inside an adult underwear-shaped disposable diaper 1. However, it is not limited to such a construction. For example, the absorbent article of the present invention may be a sanitary napkin and absorbent pad that are attached to clothing or the like, an adult and child underwear-shaped disposable diaper or a patch-type disposable diaper, a shorts-type sanitary napkin, or an absorbent pad disposed inside a child's disposable diaper.

[0117] In the above embodiment, the fold-inducing portion 43 is formed by compressing the absorbent core 32, but the structure is not limited to this. The fold-inducing portion 43 can be any portion of the absorbent core 32 with a different stiffness. For example, the fold-inducing portion 43 can be the unit area mass (g / m²) of the liquid absorbent fibers in the absorbent core 32. 2 Different parts, or it could be a penetrating part that penetrates the absorption core in the thickness direction.

[0118] In the above embodiments, the slits 40 are all penetrating portions, including straight portions and curved portions, but their construction is not limited to this. The slits 40 can have any shape as long as they extend in the front-back direction. The slits 40 can be any shape, for example, they can be a rectangular shape or a straight shape that does not necessarily include curved portions.

[0119] Furthermore, in the above embodiment, slits 40fa and 40ra on one side (left side) in the width direction are continuous, and slits 40fb and 40rb on the other side (right side) in the width direction are continuous. However, the slits 40 only need to have a shape that extends in the front-back direction. Slits 40fa and 40ra can be spaced apart from each other, and slits 40fb and 40rb can be spaced apart from each other.

[0120] In the above embodiment, the folding guiding portions 43fa and 43fb are positioned at a location overlapping the narrow portion M in the front-rear direction, but the configuration is not limited to this. The slits 40fa and 40fb can be positioned relative to the rear side of the folding guiding portions 43fa and 43fb. For example, the entire folding guiding portions 43fa and 43fb can be located in the front portion F, or they can be positioned across the front portion F and the narrow portion M.

[0121] List of reference numerals

[0122] 1: Underwear-shaped disposable diapers (diapers)

[0123] 2: External subject,

[0124] 3: Absorber

[0125] 4: Absorption core

[0126] 10, 100: Absorbent pads (absorbent items)

[0127] 10F: Front section (one side)

[0128] 10R: Rear section (the other side)

[0129] 20: Side view of skin

[0130] 22: Non-skin side image,

[0131] 25: Hook (temporary fixing part)

[0132] 30: Absorber

[0133] 32, 320: Absorption core,

[0134] 34: Core-encapsulated wafers

[0135] 38: The gap / part

[0136] 40: Slit

[0137] 40fa, 40fb, 40ra, 40rb: slit,

[0138] 43: Folding guide section,

[0139] 43fa, 43fb: Anterior folding guide portion (folding guide portion)

[0140] 43ra, 43rb: Rear folding guide section (the folding guide section on the other side),

[0141] 43v: Virtual area

[0142] 45: Compression section

[0143] 50: Side panel,

[0144] 51: Leak-proof wall section

[0145] 52: Leak-proof wall tensioning components

[0146] 54: Leg stretching components

[0147] M: Narrow section

[0148] F: front,

[0149] R: Rear part

[0150] H: Folded part

[0151] X: Central Region

[0152] G: Anastomosis point

[0153] J: Intersection point

Claims

1. An absorbent article having intersecting front-to-back, width, and thickness directions, the absorbent article comprising a liquid-absorbent core. In both unfolded and stretched states The absorbent core includes a narrow portion, the length of which in the width direction is shorter than the length in the width direction of the end portion on one side in the front-rear direction. The narrow portion is provided in the crotch area, which is positioned at the wearer's crotch when the absorbent garment is worn. The absorber core includes a pair of folding induction portions and a pair of slits on one side in the front-to-back direction. Each of the pair of folding guiding portions is inclined from one side to the other in the front-back direction and from the center outward in the width direction. The pair of slits extend in the front-to-back direction and are positioned on both sides in the width direction. In the front-to-back direction, The slit is positioned on the other side relative to the folding induction portion. The slit has a portion that overlaps with the narrow portion in the front-back direction, and The end of one side of the slit is positioned on the other side, relative to one end of the narrow portion. The absorber core itself includes a pair of notched portions, and The notch portion is provided in the side end portion in the width direction and is located on one side relative to the folding induction portion.

2. The absorbent article according to claim 1, wherein The pair of folding induction portions are continuous at the end portion on one side.

3. The absorbent article according to claim 1 or 2, wherein Each of the folding-inducing portions is a compression portion.

4. The absorbent article according to claim 1, wherein The absorbent article has any of the following: At the anastomosis point, when viewed along the thickness direction, at least a portion of the end of the other side of the folding induction portion abuts against the edge of one side of the slit. The intersection point is where the virtual region obtained by extending the folding induction portion to the other side intersects with the edge of one side of the slit.

5. The absorbent article according to claim 4, wherein The absorbent material is an absorbent pad. A temporary fixing portion is disposed on the non-skin-side surface of the absorbent article, the temporary fixing portion being a portion for detachably fixing the absorbent pad to the skin-side surface of a disposable diaper or garment, and Either the matching point or the intersection point is located inside both ends of the temporary fixing part in the width direction.

6. The absorbent article according to claim 1, wherein On the other side, the absorbent core includes a fold-inducing portion and a pair of slits. Each of the pair of folding induction portions on the other side slopes outward from the central portion in the width direction from the other side to one side, and... In the front-to-back direction, The slit is located on one side relative to the folding induction portion on the other side, and The end of the slit on the other side is located on one side relative to the end of the narrow section on the other side.

7. The absorbent article according to claim 6, wherein When the narrow section is divided into three equal parts in the front-to-back direction, namely: one side part, the central part, and the other side part, At least a portion of the folding guiding portion is provided on one side. The central portion is provided with at least a portion of the slit, and The other side portion is provided with at least a portion of the folding induction portion of the other side.

8. The absorbent article according to claim 1, wherein The absorbent article has portions in which the narrow portion and the fold-inducing portion overlap with respect to the front-back direction.

9. The absorbent article according to claim 8, wherein The length of the portion overlapping the narrow section and the folding induction section in the front-back direction is half the length of the folding induction section in the front-back direction.

10. The absorbent article according to claim 1, wherein The length of the slit in the front-back direction is longer than the length of the folding induction portion in the front-back direction.

11. The absorbent article according to claim 1, wherein The absorbent article also includes: A pair of tension members that stretch and contract in the front-to-back direction; as well as The folding portion is used to fold the absorbent article in the front-to-back direction and extends in the width direction. The pair of tension members are positioned along the width direction outside the slit and on the non-skin side relative to the absorbent core, and pass through the folded portion.

12. The absorbent article according to claim 11, wherein The length of the stretching region of the stretching member in the front-back direction is shorter than the length of the narrow portion in the front-back direction.

13. The absorbent article according to claim 12, wherein The slit extends from one side to the other, and The length of the tension region of the tension member in the front-to-back direction is shorter than the length of the slit in the front-to-back direction.

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