Absorbent articles

Abstract

To prevent twisting of an absorbent article by making it hard to be released from an underwear when the absorbent article is deformed.SOLUTION: An absorbent article includes a non-slip part on a back sheet side. On a top sheet side, compressed grooves are formed. The compressed grooves include a pair of left compressed groove and a right compressed groove which extends along a back and forth direction so as to bridge a body fluid discharge port opposite part facing the body fluid discharge port of a wearer when putting on the article. The left compressed groove has a rightward projecting shape so that it passes a central region in the horizontal direction in the center of the back and forth direction; the right compressed groove has a leftward projecting shape so that it passes the central region in the horizontal direction in the center of the back and forth direction. In a plan view, the left compressed groove and the right compressed groove do not overlap the non-slip part in the central region in the horizontal direction, and a front end and a rear end of the left compressed groove, and the front end and a rear end of the right compressed groove overlap the non-slip part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an absorbent article. [Background technology]

[0002] There are known pad-like absorbent articles such as incontinence pads, sanitary napkins, pad-type diapers, etc. Such absorbent articles are generally configured to include a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body provided between the top sheet and the back sheet, and further include a slippage prevention part on the back sheet side to prevent the absorbent article from slipping relative to underwear.

[0003] When worn, absorbent articles are deformed three-dimensionally to fit the wearer's body. In this deformed state, the absorbent article is further subjected to force from the wearer's legs, and therefore, when the wearer moves his or her body significantly, there may be places where the slip-prevention part is likely to peel off from the underwear. Therefore, the positioning of the slip-prevention part that takes into account the deformation state of the absorbent article when worn has been studied, for example, the positioning relationship between the slip-prevention part and the compressed grooves (fit embossing) that promote the deformation of the absorbent article.

[0004] Patent Document 1 describes an absorbent article in which an anti-slip adhesive layer is formed in an area that does not overlap the fit embossment in the thickness direction of the absorbent article, and the anti-slip adhesive layer includes a crotch adhesive part and front and rear adhesive parts formed at intervals on the front and rear parts of the crotch adhesive part, respectively, on the widthwise outer side of the fit embossment. Patent Document 1 describes that when leg pressure acts while the absorbent is worn, the anti-slip adhesive layers can be prevented from adhering to each other due to the contraction and deformation of the absorbent body caused by the fit embossment, and the problem of the anti-slip part being unable to adhere to the underwear can be solved. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2017-42471 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the desired state of deformation (shape after deformation) when worn varies depending on the application of the absorbent article, and the shape of the compressed grooves (fit embossing) that induces the deformation also varies. Therefore, depending on the shape of the compressed grooves, the slip prevention part (slip prevention adhesive layer) may peel off from the underwear, which may cause the absorbent article to twist, and the twisting may lead to leakage of bodily fluids.

[0007] In view of the above, an object of one aspect of the present invention is to prevent the absorbent article from becoming liable to peel off from an undergarment when the absorbent article is deformed, thereby preventing the absorbent article from becoming twisted. [Means for solving the problem]

[0008] A first aspect of the present invention is an absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body provided between the top sheet and the back sheet, and having a front-to-rear direction that corresponds to the front-to-rear direction of a wearer's body when worn, and a left-to-right direction perpendicular to the front-to-rear direction, wherein the back sheet side has an anti-slip portion, and the top sheet side has compressed grooves formed thereon, the compressed grooves including a pair of left and right compressed grooves that each extend along the front-to-rear direction so as to straddle in the front-to-rear direction a bodily fluid discharge outlet opposing portion that faces the wearer's bodily fluid discharge outlet when worn, the left compressed groove has a shape that is convex overall to the right so as to pass through a central region in the left-to-right direction, and the right compressed groove has a shape that is convex overall to the left so as to pass through the central region in the left-to-right direction, and in a planar view, the left compressed groove and the right compressed groove do not overlap the anti-slip portion in the central region in the left-to-right direction, and the front and rear ends of the left compressed groove, and the front and rear ends of the right compressed groove overlap the anti-slip portion.

[0009] According to the first aspect, a pair of compressed grooves, i.e., a left compressed groove and a right compressed groove, each extending along the front-rear direction so as to straddle the bodily fluid discharge port facing portion in the front-rear direction, are formed on the top sheet side. The left compressed groove has a shape convex to the right so as to pass through the central region in the left-right direction, and the right compressed groove has a shape convex to the left so as to pass through the central region in the left-right direction. As a result, when leg force is applied to both sides when worn, the absorbent article can be deformed so as to drop toward the underwear side (non-skin side) in the central region in the left-right direction. That is, a groove-shaped depression along the front-rear direction can be formed in the middle region including the bodily fluid discharge port facing portion of the absorbent article at the center in the front-rear direction. The discharged bodily fluid can be retained at least temporarily in such a depression, and the bodily fluid is further guided in the front-rear direction, so that leakage can be suppressed even when the bodily fluid is suddenly discharged or a large amount of low-viscosity bodily fluid is discharged. In addition, at the front and rear of the absorbent article, paired left and right compressed grooves can be formed in side regions that are laterally outer than the central region, so that the portions between the left and right compressed grooves can fit closely to the front and rear surfaces of the body without becoming recessed, thereby preventing leakage at the front and rear.

[0010] As described above, when the absorbent article is deformed by the guidance of the compressed grooves when it receives a force from the legs, the front and rear parts of the side regions in the left and right direction, i.e., the locations where the front and rear ends of the left and right compressed grooves are located and their vicinity, are easily pulled toward the center of the absorbent article in the front-rear direction and toward the center in the left and right direction (or toward the portion facing the bodily fluid discharge port). Therefore, the front and rear parts of the side regions are easily separated from the underwear, and the fixation of the absorbent article to the underwear may become unstable. In contrast, according to this embodiment, the front and rear ends of the left compressed groove and the front and rear ends of the right compressed groove overlap the slip prevention portion in a plan view, so that the fixation of the absorbent article to the underwear in the front and rear of the side regions can be more reliably performed, and the absorbent article is less likely to be separated from the underwear. Therefore, it is possible to prevent the absorbent article from deforming into an undesirable shape when separated from the underwear, causing wrinkles, twists, etc. Therefore, it is possible to maintain the desired deformed state of the absorbent article that fits the body.

[0011] Furthermore, in this embodiment, since the left and right compressed grooves do not overlap with the slip prevention parts in the left-right central region in a plan view, even if the absorbent article is deformed such that the width of the central region decreases due to the force of the legs from the left and right, the slip prevention parts themselves can be prevented from sticking to each other. This makes it possible to prevent the absorbent article from twisting in the left-right central region.

[0012] In a second aspect of the present invention, the left compressed groove and the right compressed groove are in contact with or overlap with each other in the central region in the left-right direction.

[0013] According to the second aspect, the left compressed groove and the right compressed groove are in contact with or overlap each other, improving the rigidity of the area, so that the intermediate region of the absorbent article can more reliably form a depression toward the underwear side along the front-rear direction in the central region in the left-right direction. This makes it easier to obtain the above-mentioned effect of being able to at least temporarily store bodily fluids and guide them in the front-rear direction. In addition, the shape of the depression once formed is stable, so that the absorbent article can be prevented from twisting even when worn for a long time.

[0014] In a third aspect of the present invention, the anti-slip portion includes at least a pair of left and right anti-slip portion formed continuously along the fore-and-aft direction on both sides, and the front and rear ends of the left compressed groove overlap the left anti-slip portion, and the front and rear ends of the right compressed groove overlap the right anti-slip portion.

[0015] According to the third aspect, the anti-slip portions are formed continuously in the front-to-rear direction in both side regions, so that the absorbent article can be more reliably fixed in the front-to-rear direction. Also, in the side regions, the anti-slip portion provides a continuous anti-slip portion from the front end to the rear end of the left compressed groove, and the right anti-slip portion provides a continuous anti-slip portion from the front end to the rear end of the right compressed groove. Therefore, even if the front or rear of the absorbent article is twisted about the front-to-rear center line as the central axis, the absorbent article is less likely to peel off from the underwear, and it is possible to obtain fixation at a desired position and a desired deformation.

[0016] In a fourth aspect of the present invention, a linear central compressed groove along the front-to-back direction is formed in the central region in the left-right direction, and a portion of the left compressed groove and a portion of the right compressed groove are included in the central compressed groove.

[0017] According to the fourth aspect, the linear central compressed groove makes it easier to form a depression extending in the front-rear direction that drops toward the underwear in the left-right central region, making it easier to achieve the above-mentioned effect of being able to at least temporarily store bodily fluids and guide them in the front-rear direction. Also, since a part of the left compressed groove and a part of the right compressed groove are included in the central compressed groove, and the front and rear portions of both the left compressed groove and the right compressed groove are continuous with the central compressed groove, it becomes easier to form a deformation of the absorbent article that is continuous in the front-rear direction and to maintain that deformation stably.

[0018] In a fifth aspect of the present invention, the left anti-shift portion and the right anti-shift portion are each spaced apart from the central compressed groove in a plan view.

[0019] According to the fifth aspect, the effect of preventing the slippage prevention parts from sticking to each other in the left-right central region can be improved, thereby facilitating the induction of the formation of a depression on the underwear side by the central compressed groove.

[0020] In a sixth aspect of the present invention, a front portion including the front end and / or a rear portion including the rear end of the left compression groove and the right compression groove are formed in a convex arc shape toward a fore-and-aft center line extending in the fore-and-aft direction.

[0021] According to the sixth aspect, it is possible to allow the front and / or rear of the absorbent article to deform more naturally in accordance with the shape of the body. Effect of the Invention

[0022] According to one aspect of the present invention, it is possible to provide an absorbent article that can be easily deformed into a desired shape when worn and in which the occurrence of wrinkles or kinks in undesired places is reduced. [Brief description of the drawings]

[0023] [Figure 1] 1 is a plan view of an absorbent article according to one embodiment, viewed from the skin side. [Diagram 2] 2 is a cross-sectional view taken along line II in FIG. 1. [Diagram 3] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Figure 4] FIG. 3 is a cross-sectional view corresponding to FIG. 2, showing the absorbent article in a deformed state. [Diagram 5] 1A to 1C are diagrams for explaining functions of an absorbent article according to one embodiment. [Figure 6] FIG. 2 is a partially enlarged view of FIG. [Figure 7] 13A and 13B are diagrams showing modified examples of the anti-displacement portion. [Figure 8] 13A and 13B are diagrams showing another modified example of the slippage prevention portion. [Figure 9] 13A and 13B are diagrams showing still another modified example of the anti-displacement portion. [Figure 10] FIG. 13 is a diagram showing a modified example of a compression groove. [Figure 11] FIG. 13 is a diagram showing another modified example of the compression groove. [Figure 12] FIG. 13 is a diagram showing yet another modified example of the compression groove. [Figure 13] FIG. 13 is a diagram showing yet another modified example of the compression groove. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In each drawing, unless otherwise specified, the same or corresponding components are denoted by the same reference numerals and the description thereof will be omitted.

[0025] <Basic structure of absorbent articles> FIG. 1 shows a plan view of an absorbent article 1 according to one embodiment of the present invention. In this example, the absorbent article 1 is an incontinence pad. FIG. 2 shows a cross-sectional view of the absorbent article 1 taken along line II, and FIG. 3 shows a cross-sectional view of the absorbent article 1 taken along line II-II. As shown in FIGS. 1 to 3, the absorbent article 1 is constructed by stacking a liquid-permeable top sheet 3, a liquid-impermeable back sheet 2, and an absorbent body 4 disposed between the two sheets. The absorbent article 1 has a generally flat shape as a whole before being worn (FIGS. 2 and 3). When the absorbent article 1 is worn, the top sheet 3 side faces the skin (skin side or front side), and the back sheet 2 side is fixed to an underwear (underwear side or back side). Thus, FIG. 1 shows the absorbent article 1 as viewed from the skin side.

[0026] In the absorbent article 1, a direction corresponding to the front-rear direction of the wearer's body when worn is defined as a front-rear direction D1, and a direction perpendicular to the front-rear direction D1 and corresponding to the left-right direction of the wearer's body is defined as a left-right direction D2. In this embodiment, the absorbent article 1 has an elongated shape in a plan view, and the front-rear direction D1 of the absorbent article 1 is a longitudinal direction, and the left-right direction D2 is a width direction. In the embodiment shown in FIG. 1, the absorbent article 1 has a shape that is approximately line-symmetrical with respect to a center line (front-rear center line) CL extending along the front-rear direction D1 in a plan view, but the shape does not have to be line-symmetrical. In addition, configurations other than the shape of the absorbent article 1 (including the density, material, and size of the compressed grooves of the absorbent body 4) may also be approximately symmetrical or asymmetrical with respect to the center line CL as an axis of symmetry.

[0027] The back sheet 2 may be a sheet having at least water impermeability, for example, a sheet made of an olefin resin such as polyethylene or polypropylene. A laminated nonwoven fabric in which a nonwoven fabric is laminated on a polyethylene sheet or the like, or a laminated sheet of nonwoven fabric in which a waterproof film is interposed to ensure substantial liquid impermeability, may also be used. In addition, it is more preferable to use a sheet having moisture permeability from the viewpoint of preventing stuffiness. As such a water impermeable / moisture permeable sheet material, a microporous sheet obtained by melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet and then stretching the sheet in a uniaxial or biaxial direction may be used.

[0028] The top sheet 3 can be a sheet that is permeable to bodily fluids such as urine, menstrual blood, and vaginal discharge. As the top sheet 3, a nonwoven fabric with or without holes, a porous plastic sheet, or the like is preferably used. As the material fiber constituting the nonwoven fabric, for example, olefins such as polyethylene and polypropylene, synthetic fibers such as polyester and polyamide, regenerated fibers such as rayon and cupra, and blended fibers thereof, and natural fibers such as cotton can be used alone or in combination of two or more kinds. In addition, examples of processing methods for nonwoven fabric include the spunlace method, the spunbond method, the thermal bond method, the meltblown method, and the needle punch method. Among these processing methods, the spunlace method is preferred in that it can produce a nonwoven fabric that is flexible, and the spunbond method is preferred in that it can produce a nonwoven fabric that is rich in drapeability, and the thermal bond method is preferred in that it can produce a nonwoven fabric that is bulky and soft. In addition, composite fibers such as core-sheath type fibers, side-by-side type fibers, and split type fibers, in which a fiber with a high melting point is the core and a fiber with a low melting point is the sheath, can also be used.

[0029] The absorbent body 4 is not limited to any material that can absorb and retain body fluids, but preferably contains cotton-like pulp and a water-absorbing polymer. As the water-absorbing polymer, superabsorbent polymer granular powder (superabsorbent polymer (SAP)), superabsorbent fiber (SAF)), and combinations thereof can be used. As the pulp, chemical pulp obtained from wood, cellulose fibers such as dissolving pulp, and artificial cellulose fibers such as rayon and acetate can be used. As the raw material for chemical pulp, hardwoods and softwoods are used, with softwoods being preferred due to their long fiber length.

[0030] Synthetic fibers may be mixed into the absorbent 4. As synthetic fibers, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof may be used, and two of these may be mixed and used. In addition, composite fibers such as core-sheath type fibers with a fiber having a high melting point as the core and a fiber having a low melting point as the sheath, side-by-side type fibers, and split type fibers may also be used. Hydrophobic fibers may be surface-treated with a hydrophilizing agent to give them affinity for body fluids. The absorbent 4 is preferably manufactured by stacking or air-laid methods.

[0031] The absorbent body 4 may be one in which the main body of the absorbent body 4 is wrapped in an envelope sheet made of crepe paper, nonwoven fabric, or the like. Providing the envelope sheet in the absorbent body 4 can prevent the absorbent body 4 from twisting or cracking, and can maintain its shape. As the envelope sheet, uncolored (i.e., white) crepe paper or nonwoven fabric can be used, or one that is colored (for example, colored in a color similar to the color of the body fluid or a color complementary to the color of the body fluid) can be used.

[0032] The absorbent body 4 may have a planar shape that is elongated and has a substantially constant width, as shown in Fig. 1. The width of the absorbent body 4 may vary along the front-rear direction D1, but an absorbent body 4 with a substantially constant width is preferred because the manufacturing process is not complicated. The absorbent body 4 may have a uniform thickness over the entire surface as a whole, but the thickness of the absorbent body 4 does not have to be uniform, and may be locally thin or thick.

[0033] At both end edges of the absorbent body 4 in the front-rear direction D1, the edges of the back sheet 2 and the edges of the top sheet 3 may be joined by an adhesive, heat sealing, etc. Furthermore, on both side portions of the absorbent article 1, i.e., on both sides in the left-right direction D2, a pair of side sheets 7, 7 are arranged on the front side (top sheet 3 side) along the front-rear direction D1.

[0034] The side sheet 7 may be made of a nonwoven material that has been subjected to an appropriate water-repellent or hydrophilic treatment depending on the purpose of preventing penetration of bodily fluids or improving the feel against the skin. The material of the side sheet 7 may be natural fiber, synthetic fiber, regenerated fiber, etc. Furthermore, when the side sheet 7 is subjected to a water-repellent treatment, a silicone-based, paraffin-based, or other water-repellent agent may be used for the treatment. The absorbent article may have a configuration in which the top sheet 3 extends to the end of the absorbent article 1 in the left-right direction D2 and is joined to the back sheet 2 without using the side sheet 7.

[0035] Gathers may be formed on both sides of the absorbent article 1 by sandwiching and joining an elastic member such as a rubber band in a stretched state between sheets. In this case, side sheets 7, 7 can also be used as sheets that sandwich the elastic member.

[0036] The absorbent article 1 may have an intermediate region M that corresponds mainly to the crotch of the wearer when worn, a front region F that is adjacent to the front of the intermediate region M and extends to the front end of the absorbent article 1, and a rear region B that is adjacent to the rear of the intermediate region M and extends to the rear end of the absorbent article 1. The intermediate region M includes a body fluid discharge port facing portion Q. The body fluid discharge port facing portion Q is a region that faces a body fluid discharge port such as the urethral opening or vaginal opening of the wearer when worn, and its center is located on the center line CL in the front-rear direction. In the example shown in FIG. 1, the body fluid discharge port facing portion Q is drawn in an elliptical shape as a region corresponding to the urethral opening, but the size and shape of the body fluid discharge port facing portion Q shown in the figure are merely examples for explaining the absorbent article according to this embodiment.

[0037] The front region F and the rear region B can be folded back toward the skin in the front-rear direction D1 when the absorbent article is individually packaged. In the example of Fig. 1, the front region F can be folded back along a fold line along the boundary line between the front region F and the middle region M, and the rear region B can be folded back along a fold line along the boundary line between the rear region B and the middle region M. This allows the absorbent article 1 to be folded in thirds or more. Either the front region F or the rear region B can be folded back first.

[0038] Furthermore, the absorbent article 1 may have, when viewed in the left-right direction D2, a central region C including a front-to-rear centerline CL, and side regions S, S that are adjacent to the outside of the central region C in the left-to-right direction D2 and extend to the outer end of the absorbent article 1 in the left-to-right direction D2. The central region C is located on the front-to-rear centerline CL and may be a region having a width that is approximately one-third the width of the absorbent body 4.

[0039] The overall length (total length) of the absorbent article 1 in the front-rear direction D1 may be preferably 170 to 360 mm, more preferably 230 to 270 mm. The length in the left-right direction D2 of the absorbent article 1 (the width of the main body excluding the wing portions if wings are provided) may be preferably 50 to 150 mm, more preferably 70 to 120 mm. The width of the absorbent body 4 sandwiched between the top sheet 3 and the back sheet 2 may be 50 to 100 mm. Furthermore, the overall thickness of the absorbent article 1 may be preferably 1 to 30 mm, more preferably 5 to 20 mm.

[0040] Although the absorbent article 1 in this embodiment does not have wings, the absorbent article 1 may have a pair of wings extending laterally from both side edges of the middle region M. The wings can be formed by joining an extending portion of the side sheet 7 and an extending portion of the back sheet 2.

[0041] <Slip prevention part> As shown in Figs. 1 to 3, a slippage prevention part is formed on the back sheet 2 side of the absorbent article 1 to reliably fix the absorbent article 1 to underwear when worn, thereby preventing the absorbent article 1 from slipping. In this embodiment, the slippage prevention part is preferably an adhesive slippage prevention part. The adhesive slippage prevention part is formed, for example, by applying a fluid adhesive or by attaching a preformed adhesive layer (adhesive tape, etc.). The adhesive used as the slippage prevention part can be a known adhesive, for example a hot melt type adhesive. The main components thereof include a styrene polymer, a tackifier, a plasticizer, and a combination of these.

[0042] Examples of the styrene-based polymer include styrene-ethylene-butylene-styrene block copolymer, styrene-butylene-styrene block copolymer, styrene-isobutylene-styrene copolymer, styrene-butadiene-styrene block copolymer, etc., and one or more of these can be used. In addition, the tackifier and plasticizer can be solid at room temperature. Examples of the tackifier include C5-based petroleum resin, C9-based petroleum resin, dicyclopentadiene-based petroleum resin, rosin-based petroleum resin, polyterpene resin, terpene phenol resin, etc. Examples of the plasticizer include monomer plasticizers such as triflesil phosphate, dibutyl phthalate, and dioctyl phthalate, as well as polymer plasticizers such as vinyl polymers and polyesters.

[0043] The slippage prevention part may be one or more. As shown in FIG. 1, the slippage prevention part includes at least a pair of a left slippage prevention part 9L and a right slippage prevention part 9R that extend along the front-rear direction D1 and are spaced apart in the left-right direction D2. Both the left slippage prevention part 9L and the right slippage prevention part 9R are provided in the side regions S, S in the left-right direction D2, so that the sides of the absorbent article 1 can be more reliably fixed to the underwear along the front-rear direction D1, and the fixing function as the slippage prevention part can be effectively exerted. In addition, it is preferable that the left slippage prevention part 9L and the right slippage prevention part 9R are provided so as to be within the range in which the absorbent body 4 is arranged in a plan view as shown in FIG. 1, because the thicker part in which the absorbent body 4 is arranged can be reliably fixed to the underwear. Furthermore, if the left anti-slip portion 9L and the right anti-slip portion 9R are each formed continuously in the front-to-back direction D1, the function of fixing the side regions S, S is enhanced, so that even if the force of the legs is applied from both sides, twisting is less likely to occur, which is preferable.

[0044] The length (width) w of each of the left and right anti-shift portion 9L and 9R in the left-right direction D2 may be 5 to 20 mm (FIG. 1).

[0045] <Compression groove> As shown in Figs. 1 to 3, the absorbent article 1 has compressed grooves recessed from the skin side to the non-skin side (i.e., recessed from the top sheet 3 side to the back sheet 2 side). The compressed grooves may be compressed grooves (fit embossments) formed by applying pressure in a predetermined shape to a laminate of at least the absorbent body 4 and the top sheet 3 from the top sheet 3 side. Such compressed grooves can be formed, for example, by passing a laminate including the absorbent body 4 and the top sheet 3 between a roll having a convex portion corresponding to the shape of the predetermined compressed groove and a roll facing the roll with no concaves or convexes. Since the compressed grooves are recessed from the top sheet 3 side to the back sheet 2 side, the absorbent article 1 is likely to bend when subjected to force from both sides in the left-right direction D2 so that the position of the compressed groove is convex on the back sheet 2 side (the non-skin side or underwear side). Therefore, in the shape of the compressed grooves according to this embodiment, in the middle region M of the absorbent article 1, the central region C in the left-right direction D2 is likely to deform so as to fall toward the underwear side.

[0046] The degree of compression (groove depth) within the compressed grooves may be uniform overall or may vary depending on the location. The compressed grooves may include low-compressed sections and high-compressed sections that are recessed deeper than the low-compressed sections, and the high-compressed sections may be formed intermittently within the low-compressed sections. In this specification, the low-compressed sections are shown in white and the high-compressed sections are shown in black (Figure 1, etc.). By combining the high-compressed sections and the low-compressed sections, the compressed grooves have the effect of inducing deformation of the absorbent article, and the portions in which the compressed grooves are formed can be prevented from becoming excessively hard, ensuring the flexibility of the absorbent article.

[0047] As shown in FIG. 1, the compressed groove may include a pair of compressed grooves, i.e., a left compressed groove 12L and a right compressed groove 12R, each extending along the front-rear direction D1. Here, the shape "extending along the front-rear direction D1" refers to a shape that is recognized as being along the front-rear direction D1 rather than the left-right direction D2 as a whole, and may include not only a portion parallel to the front-rear direction D1 but also a portion extending in a direction forming an angle of 45° or less with the front-rear direction D1. As shown in FIG. 1, both the left compressed groove 12L and the right compressed groove 12R extend so as to straddle the bodily fluid outlet facing portion Q in the front-rear direction D1. That is, the range in which the left compressed groove 12L and the right compressed groove 12R are provided may be a range that extends from the front region F through the middle region M to the rear region B. The left compressed groove 12L and the right compressed groove 12R may be continuous or discontinuous in the front-rear direction D1, but it is preferable that they are continuous. In the example of Fig. 1, the left compressed groove 12L is a continuous portion from its front end Lft to its rear end Lbt, and the right compressed groove 12R is a continuous portion from its front end Rft to its rear end Rba, and the two are joined to each other at the center in the left-right direction D2. The joint between the two may be formed linearly in the middle region M. In Fig. 1, the joint position 15 between the left compressed groove 12L and the right compressed groove 12R is indicated by a dotted line.

[0048] As shown in FIG. 1, the left compressed groove 12L has a shape that is convex toward the right, and the right compressed groove 12R has a shape that is convex toward the left. In the example shown in FIG. 1, the left compressed groove 12L and the right compressed groove 12R have a shape that is convex toward the center line CL in the front-rear direction. Therefore, in the front region F, the distance between the left compressed groove 12L and the right compressed groove 12R becomes larger as it approaches the front end portion in the front-rear direction D1 of the absorbent article 1. Also, in the rear region B, the distance between the left compressed groove 12L and the right compressed groove 12R becomes larger as it approaches the rear end portion in the front-rear direction D1 of the absorbent article 1. Furthermore, the front end Lft of the left compressed groove 12L and the front end Rft of the right compressed groove 12R are both located in the side region S in the left-right direction D2, and the rear end Lba of the left compressed groove 12L and the rear end Rbt of the right compressed groove 12R are both located in the side region S in the left-right direction D2.

[0049] 1, the left compressed groove 12L and the right compressed groove 12R are joined near the center in the left-right direction D2 or in the central region C in the left-right direction D2, and near the center in the front-rear direction D1 or in the middle region M. More specifically, the compressed groove 12L and the right compressed groove 12R are joined in the central region C and in the middle region M. In this example, a linear central compressed groove 11 is formed along the front-rear direction D1 across the joined portion. 1, the compressed grooves include a linear central compressed groove 11 formed in the intermediate region M along the front-rear direction D1, a front portion 12Lf of the left compressed groove 12L and a front portion 12Rf of the right compressed groove 12R extending forward from the central compressed groove 11, and a rear portion 12Lb of the left compressed groove 12L and a rear portion 12Rb of the right compressed groove 12R extending backward from the central compressed groove 11. In the compressed grooves shown in FIG. 1, the front portion 12Lf of the left compressed groove 12L and the front portion 12Rf of the right compressed groove 12R that form a pair branch off from the front end of the central compressed groove 11, and the rear portion 12Lb of the left compressed groove 12L and the rear portion 12Rb of the right compressed groove 12R that form a pair branch off from the rear end of the central compressed groove 11.

[0050] The width (length in the left-right direction D2) of the central compression groove 11 is larger than the widths of the front portion 12Lf and rear portion 12Lb of the left compression groove 12L, and the front portion 12Rf and rear portion 12Rb of the right compression groove 12R, for example, the former may be at least twice as large as the latter, and preferably 3 to 5 times as large.

[0051] In this way, the compression groove includes a pair of left compression groove 12L and right compression groove 12R extending in the front-to-back direction D1 so as to straddle the bodily fluid discharge outlet opposing portion Q in the front-to-back direction D1, with the left compression groove 12L having a convex shape to the right so as to pass through the central region C and the right compression groove 12R having a convex shape to the left so as to pass through the central region C. As a result, the compression groove as a whole has a shape consisting of a straight portion (central compression groove 11) along the front-to-back direction D1 within the central region C in the left-to-right direction D2 in the intermediate region M, a portion branching out in two in an approximately V-shape or approximately Y-shape in front of the straight portion (a front portion 12Lf of the left compression groove 12L and a front portion 12Rf of the right compression groove 12R), and a portion branching out in two in an approximately V-shape or approximately Y-shape behind the straight portion (a rear portion 12Lb of the left compression groove 12L and a rear portion 12Rb of the right compression groove 12R). Therefore, when pressure is applied from the legs to both sides of the middle region M while the absorbent article 1 is being worn, the absorbent article 1 can be easily bent along the compression grooves, and a three-dimensional deformation can be induced as a whole. By inducing such deformation, the state of deformation when worn is not greatly affected by the way the user wears the absorbent article or the wearer's body shape, and the desired deformation can be obtained more reliably in the front-to-rear direction D1.

[0052] According to the above-mentioned three-dimensional deformation, in the middle region M of the absorbent article 1, the compressed groove portion formed in the central region C in the left-right direction D2 along the front-rear direction D1 causes the central region C to sink toward the underwear side, forming a depression extending along the front-rear direction D1. FIG. 4 is a view corresponding to FIG. 2 and shows a cross-sectional view of the middle region M of the absorbent article 1 in a deformed state. As shown in FIG. 4, the absorbent article 1 is deformed such that the place where the fused left compressed groove 12L and right compressed groove 12R are formed (the place where the central compressed groove 11 is formed) sinks toward the back sheet 2 side, and the absorbent body 4 on the left and right sides thereof rises. Furthermore, the front and rear of the absorbent article 1 are raised toward the top sheet 3 from the middle region M in accordance with the shape of the body, so that the front can abut against the surface near the pubic bone in the front of the body, and the rear can abut against the bulge of the buttocks in the rear of the body. At this time, due to the shape of the bifurcated compressed groove portion, the front and rear of the absorbent article 1 can be closely fitted to the skin surface without sinking into the underwear near the center in the left-right direction D2. Therefore, when a sudden discharge of bodily fluid occurs or when a large amount of low-viscosity bodily fluid is discharged, the bodily fluid can be retained at least temporarily in the above-mentioned depressions and can be quickly diffused along the depressions in the front-to-back direction D1. Furthermore, at the front and rear, the surface of the top sheet 3 side of the absorbent article 1 can be closely fitted to the pubic bone and buttocks of the body, preventing leakage in the front-to-back direction D1 and improving the fit at the front and rear of the body.

[0053] In the example shown in FIG. 1, the front portion 12Lf of the left compressed groove 12L and the front portion 12Rf of the right compressed groove 12R are formed symmetrically with respect to the front-rear center line CL. The rear portion 12Lb of the left compressed groove 12L and the rear portion 12Rb of the right compressed groove 12R are also formed symmetrically with respect to the front-rear center line CL. Furthermore, each portion 12Lf, 12Rf, 12Lb, 12Rb is formed in a convex arc shape toward the front-rear center line CL. The front portions 12Lf, 12Rf and the rear portions 12Lb, 12Rb are curved as described above, so that a natural deformation state can be obtained that follows the front and rear shapes of the body.

[0054] <Relationship between compression groove and slip prevention part> When the absorbent article 1 is worn, the absorbent article 1 is attached to the underwear using the above-mentioned slip prevention portion. Thereafter, when the absorbent article 1 is worn on the body, the absorbent article 1 is three-dimensionally deformed as described above to match the shape of the body. During wearing, it is preferable that the absorbent article 1 is fixed to the underwear while maintaining a deformed state, but when the wearer moves his / her legs significantly, the absorbent article 1 may become distorted and peel off from the underwear. In that case, the absorbent article 1 that has once peeled off may be re-fixed in an undesirable deformed shape. In particular, in a configuration having a pair of left compressed groove 12L and right compressed groove 12R having a predetermined convex shape as in this embodiment, force is easily applied to the front end Lft of the left compressed groove 12L and the front end Rft of the right compressed groove 12R, and the rear end Lbt of the left compressed groove 12L and the rear end Rbt of the right compressed groove 12R and the surrounding parts of the absorbent article 1, and the absorbent article 1 is easily peeled off from the underwear. This point will be further explained with reference to a schematic diagram (FIG. 5).

[0055] In Fig. 5, the plan view of the absorbent article 1 in Fig. 1 is reproduced, with additional explanation. As shown in Fig. 5, when worn, the sides of the middle region M of the absorbent article 1 receive forces P, P from the legs TH, TH of the wearer from the outside to the inside in the left-right direction D2. At this time, the side regions S in front of and behind the legs TH, TH are likely to be pulled in a direction toward the center in the front-back direction D1 and toward the center in the left-right direction D2 (arrow A in Fig. 5). In particular, the front end Lft of the left compressed groove 12L and the front end Rft of the right compressed groove 12R, as well as the rear end Lbt of the left compressed groove 12L and the rear end Rbt of the right compressed groove 12R and their surroundings are parts that are originally bent and distorted by the compressed grooves, and are therefore likely to peel off from the underwear due to external forces. Therefore, peeling of the absorbent article 1 (the slip prevention part) from the underwear is likely to occur near the front ends Lft, Rft and rear ends Lbt, Rbt of the compressed grooves.

[0056] In contrast, in this embodiment, the front end Lft and rear end Lbt of the left compressed groove 12L overlap the left anti-shift portion 9L, and the front end Rft and rear end Rbt of the right compressed groove 12R overlap the right anti-shift portion 9R. This makes it possible to more reliably fix to the underwear the portions where the ends (the front ends Lft, Rft and the rear ends Lbt, Rbt) of the compressed grooves 12L, 12R extending to the four corners of the absorbent article 1 are located and the surrounding portions. This makes it possible to prevent the entire absorbent article 1 from shifting out of the underwear, or the absorbent article 1 from being deformed into an undesirable shape.

[0057] As shown in Figs. 1 to 5, the left compressed groove 12L and the right compressed groove 12R do not overlap the slippage prevention portions in the central region C in the left-right direction D2. The linear central compressed groove 11 formed by joining the left compressed groove 12L and the right compressed groove 12R is also not overlapped by the slippage prevention portions. Here, the compressed grooves extending into the central region C in the left-right direction D2 are formed in the middle region M. When worn, the middle region M receives forces P, P from both legs TH, TH that reduce the width of the absorbent article 1 (Fig. 5). Therefore, there is a high possibility that the slippage prevention portions will come into contact with each other in the left-right direction D2 and stick to each other on the back sheet 2 side. Therefore, by not forming slippage prevention portions in the central region C in the left-right direction D2 where the compressed grooves extend, the possibility of the slippage prevention portions sticking to each other can be reduced.

[0058] Therefore, in the intermediate region M, it is preferable that no other displacement prevention portion is provided between the left displacement prevention portion 9L and the right displacement prevention portion 9R extending along the front-rear direction D1.

[0059] Furthermore, in the middle region M, it is preferable that the left compressed groove 12L or the right compressed groove 12R is spaced apart from the slippage prevention portion in the left-right direction D2. The maximum distance between the left compressed groove 12L or the right compressed groove 12R and the slippage prevention portion may be preferably 5 to 30 mm, more preferably 8 to 20 mm. In the example shown in FIG. 1, this distance is shown as the distance d between the linear central compressed groove 11 and the right slippage prevention portion 9R in the left-right direction D2. Moreover, this distance d is preferably 35 to 50% of the length from one edge of the central compressed groove 11 in the left-right direction D2 to the one edge of the absorbent body 4 in the left-right direction D2. By having the central compressed groove 11 and the left slippage prevention portion 9L and the right slippage prevention portion 9R spaced apart within the above ranges, respectively, a flexible region can be secured between the central compressed groove 11 and the slippage prevention portions 9L and 9R. Therefore, when the absorbent article 1 is subjected to leg force from the left and right when worn, the portion between the central compressed groove 11 and the left anti-slip portion 9L, and the portion between the central compressed groove 11 and the right anti-slip portion 9R, when viewed in the left-right direction D2, can be raised toward the skin, further promoting the collapse of the central compressed groove 11 (Figure 4).

[0060] When a central compressed groove 11 is formed, the width w of the anti-slip portion (the length in the left-right direction D2 of the left anti-slip portion 9L or the right anti-slip portion 9R) can be 35 to 50% of the width from one edge of the central compressed groove 11 in the left-right direction D2 to the above-mentioned one edge of the absorbent body 4 in the left-right direction D2.

[0061] In the front region F and the rear region B, anti-slip portions may be provided between the left anti-slip portion 9L and the right anti-slip portion 9R extending along the front-rear direction D1. For example, as shown in FIG. 1, central anti-slip portions 9C, 9C may be formed. It is preferable that the central anti-slip portions 9C, 9C are formed in the front region F and / or the rear region B, and are not formed in the middle region M. In addition, the central anti-slip portions 9C, 9C may extend to the middle region M, but it is preferable that they do not overlap with the central compressed groove 11.

[0062] FIG. 6 shows a partially enlarged view of FIG. 1. FIG. 6 shows an enlarged view of a portion near the front end Lft of the left compressed groove 12L. As described above, in this embodiment, the front end Lft and rear end Lbt of the left compressed groove 12L overlap the left slippage prevention portion 9L, and the front end Rft and rear end Rbt of the right compressed groove 12R overlap the right slippage prevention portion 9R, so that the absorbent article 1 can be stably fixed to the underwear and the desired deformation induced by the compressed groove can be maintained even during wearing. It is preferable that the tip of the compressed groove and the slippage prevention portion overlap in the front-rear direction D1 and the left-right direction D2. As shown in FIG. 6, the length a1 in the front-rear direction D1 of the portion where the front end Lft of the left compressed groove 12L overlaps the left slippage prevention portion 9L may be preferably 3 mm or more, more preferably 5 mm or more. The length a2 in the left-right direction D2 of the portion where the front end Lft of the left compressed groove 12L overlaps with the left anti-shift portion 9L may be preferably 3 mm or more, more preferably 5 mm or more. The area of ​​the portion where the front end Lft of the left compressed groove 12L overlaps with the left anti-shift portion 9L is 5 to 25 mm. 2 By having the compressed grooves overlap with the slip prevention portions in a plan view with a length or area within the above ranges, it is possible to prevent the absorbent article 1 from coming off the underwear while being worn, even if pressure is applied from the legs, and it is possible to prevent the occurrence of wrinkles and creases in undesirable places.

[0063] The preferred ranges of length and area described above with reference to Fig. 6 are the same for the tips of other compressed grooves not shown in Fig. 6, i.e., the rear end Lbt of the left compressed groove 12L and the front end Rft and rear end Rbt of the right compressed groove 12R. The overlapping degree (overlapping length and area) between the compressed groove and the slippage prevention portion in a plan view may be different for the above four tips of the compressed groove, but it is preferable that the overlapping degree (overlapping length and area) is the same for the front ends Lft and Rft and / or the rear ends Lbt and Rbt, since this balance is achieved between the left and right. It is also preferable that the overlapping degree (overlapping length and area) between the compressed groove and the slippage prevention portion in a plan view is the same for all tips Lft, Rft, Lbt, and Rbt of the compressed groove, since this balance is achieved in the resistance to peeling at the four corners.

[0064] <Modification of the slip prevention part> 7 to 9 show an absorbent article having a modified slip prevention part. In the example shown in FIG. 7, the configuration other than the slip prevention part is the same as that shown in FIG. 1. The slip prevention part shown in FIG. 7 includes a left slip prevention part 9L and a right slip prevention part 9R that extend in a pair along the front-rear direction D1, but in the front region F, a central slip prevention part 9C is provided between the left slip prevention part 9L and the right slip prevention part 9R, and the left slip prevention part 9L, the central slip prevention part 9C, and the right slip prevention part 9R are continuously formed in the left-right direction D2. Also in the rear region B, a central slip prevention part 9C is provided between the left slip prevention part 9L and the right slip prevention part 9R, and the left slip prevention part 9L, the central slip prevention part 9C, and the right slip prevention part 9R are continuously formed in the left-right direction D2. This strengthens the bond between the anti-slip portions in the left-right direction D2 at the front and rear of the absorbent article 1, improving the function of the anti-slip portions to secure the absorbent article 1 to underwear.

[0065] 7, the front ends of the left anti-slip portion 9L, the central anti-slip portion 9C, and the right anti-slip portion 9R in the front region F and the rear ends of the left anti-slip portion 9L, the central anti-slip portion 9C, and the right anti-slip portion 9R in the rear region B are aligned, so that a continuous anti-slip portion having a rectangular ring shape is formed when viewed as a whole. This strengthens the fixation of the absorbent article 1 to the underwear all around the front, back, left and right peripheral edges, preventing the occurrence of undesirable localized wrinkles and kinks and also preventing the absorbent article 1 from shifting as a whole.

[0066] In the example shown in FIG. 8, the left slip prevention portion 9L and the right slip prevention portion 9R are aligned along the front-rear direction D1, but are discontinuous along the way when viewed in the front-rear direction D1. That is, the left slip prevention portion portions 9L1, 9L2, and 9L3 that extend discontinuously in the front-rear direction D1 and the right slip prevention portion portions 9R1, 9R2, and 9R3 that extend discontinuously in the front-rear direction D1 are formed. The example in which the slip prevention portion has discontinuous portions is preferable from the viewpoint of ensuring flexibility in the front-rear direction D1. However, in each of the left slip prevention portion 9L and the right slip prevention portion 9R that extend along the front-rear direction D1, the front-rear direction D1 length of the discontinuous portion is preferably 20% or less of the entire extension length of the left slip prevention portion 9L or the entire extension length of the right slip prevention portion 9R.

[0067] Furthermore, in the front region F, a central anti-slip portion 9C is provided between the left anti-slip portion 9L1 and the right anti-slip portion 9R1, and in the rear region B, a central anti-slip portion 9C is provided between the left anti-slip portion 9L3 and the right anti-slip portion 9R3. Furthermore, in the front region F, the left anti-slip portion 9L1, the central anti-slip portion 9C, and the right anti-slip portion 9R1 are formed continuously in the left-right direction D2. Similarly, in the rear region B, the left anti-slip portion 9L3, the central anti-slip portion 9C, and the right anti-slip portion 9R3 are formed continuously in the left-right direction D2. As a result, the anti-slip portions are joined together in the left-right direction D2 at the front and rear, so that the absorbent article 1 can be stably fixed to the underwear at the front and rear (near the front end and rear end of the absorbent body 4), and undesirable twisting, wrinkles, etc. can be prevented.

[0068] In the example shown in FIG. 9, the left and right anti-slip portions 9L and 9R are each discontinuous in the middle of the front-rear direction D1, as in the example shown in FIG. 8, and the same effect can be obtained. In the example shown in FIG. 9, in the front region F, the central anti-slip portion 9C formed between the left anti-slip portion 9L1 and the right anti-slip portion 9R1 in the left-right direction D2 is separated from the left anti-slip portion 9L1 and the right anti-slip portion 9R1. In the rear region B, the central anti-slip portion 9C formed between the left anti-slip portion 9L3 and the right anti-slip portion 9R3 in the left-right direction D2 is separated from the left anti-slip portion 9L3 and the right anti-slip portion 9R3. Therefore, the example shown in FIG. 9 is preferable in terms of ensuring flexibility in the side regions S, S as well as flexibility in the central region C in the front region F and the rear region B.

[0069] In the example shown in Fig. 9, among the left slippage prevention portion parts 9L1, 9L2, and 9L3 included in the left slippage prevention portion 9L, the left slippage prevention portion part 9L1 located at the front and the left slippage prevention portion part 9L3 located at the rear have a larger length (width) in the left-right direction D2 than the left slippage prevention portion part 9L2 located at the center in the front-back direction D1. Similarly, among the right slippage prevention portion parts 9R1, 9R2, and 9R3 included in the right slippage prevention portion 9R, the right slippage prevention portion part 9R1 located at the front and the right slippage prevention portion part 9R3 located at the rear have a larger length (width) in the left-right direction D2 than the right slippage prevention portion part 9R2 located at the center in the front-back direction D1. The left slippage prevention portion parts 9L1, 9L3 and the right slippage prevention portion parts 9R1, 9R3 are all parts that overlap with the tip (front end or rear end) of the compressed groove, so the larger widths can more stably fix the area near the tip of the compressed groove to the underwear.

[0070] 7 to 9, the positions of the slip prevention parts are different, but in a plan view, the front end Lft and rear end Lbt of the left compressed groove 12L and the front end Rft and rear end Rbt of the right compressed groove 12R overlap with the slip prevention parts in the four corner regions of the absorbent article 1. More specifically, the front and rear ends of a pair of compressed grooves along the front-rear direction D1 provided in the absorbent article 1 all overlap with the slip prevention parts in both side regions S, S of the front region F and rear region B of the absorbent article 1. This ensures that the parts of the absorbent article 1 that are likely to become distorted while being worn are fixed securely by the underwear, and it is possible to prevent the absorbent article 1 from peeling off locally and causing undesirable wrinkles, twists, etc. at the peeled positions. Therefore, the absorbent article 1 can maintain a desired deformed state and more reliably absorb body fluids.

[0071] <Modification of compression groove> 10 to 13 show an absorbent article 1 having compressed grooves according to a modified example. In each of the examples shown in Figs. 10 to 13, a left compressed groove 12L having a shape convex to the right in the middle region M so as to pass through the central region C in the left-right direction D2, and a right compressed groove 12R having a shape convex to the left in the middle region M so as to pass through the central region C in the left-right direction D2, are formed, as in the example shown in Fig. 1. In other words, the left compressed groove 12L and the right compressed groove 12R are formed with their front and rear ends located in the side regions S, S, and are formed in a convex shape approaching each other near the center in the front-rear direction D1, more specifically in the middle region M. The compressed grooves shown in Figs. 10 to 13 can also be configured as a combination of a high compression section and a low compression section as shown in Fig. 1, but the high compression sections are not shown in Figs. 10 to 13.

[0072] In the example shown in Fig. 10, the right compressed groove 12R and the left compressed groove 12L are spaced apart from each other, not in contact with each other or overlapping each other. As shown in Fig. 10, the position where the right compressed groove 12R and the left compressed groove 12L are closest to each other is within the bodily fluid discharge port facing portion Q in the front-rear direction D1. Even in the example shown in Fig. 10, when the force from the legs is applied to both sides when worn, as described with reference to the example in Fig. 1, deformation occurs in the vicinity of the center in the front-rear direction D1 (middle region M) such that the central region C in the left-right direction D2 drops toward the underwear, and the front region F and the rear region B rise toward the skin so as to be in close contact with the skin surface. In the example shown in Fig. 10, the right compressed groove 12R and the left compressed groove 12L are spaced apart from each other, so that the width of the bottom of the groove-shaped depression in the central region C can be widened, which is preferable from the viewpoint of being able to hold a large amount of bodily fluid and from the viewpoint of increasing the flexibility of the absorbent article 1 as a whole.

[0073] In the example shown in FIG. 11, the right compressed groove 12R and the left compressed groove 12L intersect with each other. Since the rigidity is increased at the intersection, this intersection contributes to maintaining the curved shape when the front and rear parts are deformed to be curved toward the skin when worn. Also, similar to the example shown in FIG. 10, this is preferable from the viewpoint that the width of the bottom of the groove-like depression formed in the central region C during deformation can be widened. Furthermore, the region surrounded by the compressed grooves formed in the central region C becomes narrower toward the front from the center in the front-rear direction D1 and narrower toward the rear, so that it can function to keep bodily fluids within the region, and can reduce the possibility of leakage in the front and rear when bodily fluids move in the front-rear direction D1 along the groove-like depression.

[0074] In the example shown in Fig. 12, the right compressed groove 12R and the left compressed groove 12L are each formed linearly and joined at a joining line 15 near the center in the front-to-rear direction D1 (at the middle region M) to form a linear central compressed groove 11 in the central region C. Thus, in this example, similar to the example shown in Fig. 1, the shape has the central compressed groove 11, a pair of front portions 12Lf, 12Rf branching off from the front end of the central compressed groove 11, and a pair of rear portions 12Lb, 12Rb branching off from the rear end of the central compressed groove 11. The distance between the pair of front portions 12Lf, 12Rf becomes larger as they approach the front end of the absorbent article 1, and the distance between the pair of rear portions 12Lb, 12Rb becomes larger as they approach the rear end of the absorbent article 1. Therefore, the area between the pair of front portions 12Lf, 12Rf can be brought into contact with the pubic bone at the front of the body, and the area between the pair of rear portions 12Lb, 12Rb can be brought into contact with the bulge of the buttocks, thereby preventing leakage at the front and rear.

[0075] 13 has a shape in which, when viewed as a whole, a linear compressed groove extending from the front of the right side region S to the rear of the left side region S and a linear compressed groove extending from the front of the left side region S to the rear of the right side region S intersect at the center in the left-right direction D2. Of these compressed grooves, the one located to the left of the front-to-rear center line CL is left compressed groove 12L, and the one located to the right of the front-to-rear center line CL is right compressed groove 12R. It can be said that the left compressed groove 12L and the right compressed groove 12R are joined at a joining position 15.

[0076] Although the present invention has been described above based on the embodiments, the present invention is not limited to these embodiments. Furthermore, the above embodiments can be changed, modified, substituted, added, deleted, and combined in various ways within the scope of the claims, and these also belong to the technical scope of the present invention. [Explanation of symbols]

[0077] 1. Absorbent articles 2 Back seat 3 Top sheet 4. Absorber 7 Side seat 9C Center anti-slip part 9L Left anti-slip part 9R Right anti-slip part 11 Central compression groove 12L left compression groove 12R Right compression groove 12Lf Front part of left compression groove 12Lb Rear part of left compression groove 12Rf Anterior part of right compression groove 12Rb Posterior part of right compression groove C. The center area in the horizontal direction CL Anteroposterior center line D1 Front-to-back direction (longitudinal direction) D2 Left / right direction (width direction) F Anterior area B Posterior area M middle area Lbt Rear end of left compression groove Lft Front end of left compression groove Rbt Rear end of right compression groove Rft Front end of right compression groove S. Left and right side areas Q Opposite body fluid outlet

Claims

1. An absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body provided between the top sheet and the back sheet, the absorbent article having a front-to-rear direction corresponding to the front-to-rear direction of a wearer's body when worn, and a left-to-right direction perpendicular to the front-to-rear direction, The absorbent article has an intermediate region that corresponds mainly to the crotch of the wearer when worn, a front region that is adjacent to the front of the intermediate region and extends to the front end of the absorbent article, and a rear region that is adjacent to the rear of the intermediate region and extends to the rear end of the absorbent article, A slip prevention portion is provided on the back sheet side, A compressed groove is formed on the top sheet side, and the compressed groove includes a pair of a left compressed groove and a right compressed groove that respectively extend along the front-rear direction so as to straddle in the front-rear direction a bodily fluid discharge outlet facing portion that faces the bodily fluid discharge outlet of the wearer when worn, The left compressed groove has a shape convex to the right as a whole so as to pass through the central region in the left-right direction, and the right compressed groove has a shape convex to the left as a whole so as to pass through the central region in the left-right direction, A part of the left compressed groove and a part of the right compressed groove are included in a linear central compressed groove formed in the central region in the left-right direction along the front-rear direction, so that the compressed groove branches off from the central compressed groove and the front end of the central compressed groove. a front portion of the right compressed groove and a front portion of the left compressed groove, and a rear portion of the right compressed groove and a rear portion of the left compressed groove branching off from a rear end of the central compressed groove, a front portion of the right compressed groove and a front portion of the left compressed groove, and a rear portion of the right compressed groove and a rear portion of the left compressed groove are convexly arc-shaped toward a front-rear center line extending along the front-rear direction, The width of the central compressed groove is 3 to 5 times the width of the front portion of the right compressed groove and the front portion of the left compressed groove, and the width of the rear portion of the right compressed groove and the rear portion of the left compressed groove; An absorbent article in which, when viewed in a plan view, the left compressed groove and the right compressed groove do not overlap the anti-slip portion in the left-right central region, and the front and rear ends of the left compressed groove and the front and rear ends of the right compressed groove overlap the anti-slip portion.

2. The slippage prevention portion includes at least a pair of left slippage prevention portion and right slippage prevention portion formed continuously along the front-rear direction on both side portions, The absorbent article according to claim 1 , wherein the front and rear ends of the left compressed groove overlap the left anti-slip portion, and the front and rear ends of the right compressed groove overlap the right anti-slip portion.

3. The absorbent article according to claim 2 , wherein in a plan view, the left anti-slip portion and the right anti-slip portion are each spaced apart from the central compressed groove.

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