absorbent articles

Abstract

To provide an absorbent article capable of preventing leakage of body fluid from an absorber on an outer side in a width direction of three-dimensional gathering.SOLUTION: An absorbent article comprises: a front bodice area corresponding to an abdominal side of a wearer; a rear bodice area corresponding to a back side of the wearer; and a crotch area provided between the front bodice area and the rear bodice area. The absorbent article includes: a gourd-shaped absorber which extends from the front bodice area to the rear bodice area, and in which the front bodice area and the rear bodice area are wide in the width direction relative to the crotch area; a water permeable top sheet covering a skin face side of the absorber; a non-water permeable back sheet covering a non-skin face side of the absorber; and non-water permeable side sheets which have base end parts in the vicinity of opposite end parts of the crotch area and stand in parallel in a longitudinal direction and form three-dimensional gathering which makes close contact with skin surface of the wearer. Between the three dimensional gathering and the top sheet between the crotch area and the rear bodice area, a flowing control portion for damming fluid is provided.SELECTED DRAWING: Figure 5

Description

[Technical Field]

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

[0002] Diapers, which are absorbent articles, generally contain an absorbent body inside a laminated sheet, and the absorbent body absorbs moisture contained in the body fluids excreted by the wearer.

[0003] Impermeable side sheets run across the width of the absorbent body, and the free ends of the side sheets are biased with elastic threads, etc. When the diaper is worn, the side sheets rise up to fit the curves of the wearer's body, adhering closely to the skin and preventing bodily fluids from leaking across the width of the diaper. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-68949 Summary of the Invention [Problem to be solved by the invention]

[0005] When the diaper wearer is lying face down or on their back, there is no strong pressure on the absorbent core. However, when the wearer is lying on their side, there is a possibility that strong pressure will be exerted between the bed and the wearer's buttocks. When strong pressure is exerted on the absorbent core that has absorbed moisture, the impermeable side sheets may not be able to withstand the pressure, and excrement may leak out of the diaper. [Means for solving the problem]

[0006] In order to solve the above problem, a flow control section is provided between the crotch region and the back body region of the standing gathers.

[0007] Specifically, the present invention provides an absorbent article having a front body region corresponding to the abdominal side of the wearer, a back body region corresponding to the back side of the wearer, and a crotch region located between the front body region and the back body region, the absorbent article comprising: a gourd-shaped absorbent body extending from the front body region to the back body region, with the front body region and the back body region being wider in width than the crotch region; a water-permeable top sheet covering the skin-facing side of the absorbent body; a water-impermeable back sheet covering the non-skin-facing side of the absorbent body; and water-impermeable side sheets having base ends near both widthwise ends of the crotch region, standing parallel to the longitudinal direction and forming three-dimensional gathers that come into close contact with the skin of the wearer, and a flow control device that blocks fluid is provided between the three-dimensional gathers and the top sheet between the crotch region and the back body region.

[0008] The flow control section may be formed by bonding the standing gathers and the top sheet together on the inner side in the width direction of the base end section.

[0009] The side sheets may cover the skin-facing side of the absorbent body on the widthwise outer sides of the base end portions of the standing gathers.

[0010] The water pressure resistance of the side sheets may be 150 mmH2O.

[0011] The amount of polymeric water-absorbing material blended on the outer side in the width direction of the base end portion of the standing gathers of the gourd-shaped absorbent body may be smaller than that on the inner side in the width direction of the base end portion of the standing gathers.

[0012] The gourd-shaped absorbent body is made up of a plurality of water-absorbing layers, and only some of the water-absorbing layers may extend outside the base end of the standing gathers in the width direction. [Effects of the Invention]

[0013] According to the present invention, the movement of urine toward the wearer's buttocks can be prevented, so that even if strong pressure is applied between the buttocks and the bed, urine will not leak out of the diaper beyond the side sheets. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a plan view of an inner pad according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the inner pad according to the embodiment. [Figure 3] FIG. 3 is a cross-sectional view of the crotch portion of the inner pad according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view of the lower back portion of the inner pad according to the embodiment. [Figure 5] FIG. 5 is a plan view of an inner pad in which a weir is provided in a flow path. [Figure 6] FIG. 6 is a cross-sectional view of a weir portion of an inner pad in which a weir is provided in a flow path. [Figure 7] Figure 7 shows the results of pouring artificial urine from an experimental doll onto the inner pad. [Figure 8] FIG. 8 is a table showing the results of experiments on the water pressure resistance of suitable side sheets. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, absorbent articles according to embodiments of the present invention will be described with reference to the drawings. Note that the configurations of the following embodiments are examples, and the present invention is not limited to the configurations of these embodiments.

[0016] In this embodiment, the longitudinal direction of a replaceable inner pad (an example of an "absorbent article" in this application) is the direction connecting the front body (abdominal side) positioned opposite the wearer's abdomen and the back body (back side) positioned opposite the wearer's back. The crotch area, which is positioned between the front body (one side in the longitudinal direction) and the back body (the other side in the longitudinal direction) (the center in the longitudinal direction) and is positioned under the wearer's crotch (facing the crotch). When the inner pad is worn on a wearer (hereinafter abbreviated as "worn state"), the side facing the wearer's skin (the inner side when worn) is the skin-facing side, and the side opposite the skin-facing side (the outer side when worn) is the non-skin-facing side. The thickness direction is the direction connecting the skin-facing side and the non-skin-facing side, and the width direction is the direction perpendicular to both the longitudinal direction and the thickness direction. Additionally, a plan view is defined as a view from the thickness direction.

[0017] In this embodiment, the invention will be described using a replaceable inner pad as an example. The present invention relates to a non-permeable sheet positioned at the skin-facing end in the width direction and biased with elastic threads or the like (three-dimensional gathers), and can naturally be applied to pants-type diapers and tape-type diapers with three-dimensional gathers.

[0018] FIG. 1 is a plan view of an inner pad according to an embodiment. The inner pad 1 has a crotch region 1B, which corresponds to the crotch area of the wearer, covering the genitals when worn; a front body region 1F, which is located in front of the crotch region 1B and corresponds to the wearer's front body; and a back body region 1R, which is located behind the crotch region 1B and corresponds to the wearer's back body. The front body region 1F, back body region 1R, and crotch region 1B incorporate a gourd-shaped absorbent core 6, with a narrowed crotch area centered around the crotch region 1B. In the front body region 1F and back body region 1R, in the areas without absorbent core in the transverse and longitudinal directions of the diaper, all sheets covering the absorbent core 6 are welded with a hot-melt adhesive or the like, preventing the inflow of bodily fluids from unwelded areas and regulating the position of the absorbent core 6. The inner pad 1 is attached between the undergarment and the skin, so that it adheres closely to the wearer's skin. Also, if the inner pad 1 is attached inside a tape-type diaper or pants-type diaper, the inner pad 1 will regulate bodily fluids, so even if bodily fluids are released, the diaper itself will not leak. It can be reused.

[0019] The inner pad 1 is provided with elastic bodies 2 in the areas surrounding the wearer's legs (thighs) (widthwise ends of the crotch area) to prevent the formation of gaps between the inner pad 1 and the wearer's skin that could serve as a liquid outflow path. The elastic bodies 2 extend in the longitudinal direction of the inner pad 1. Further, additional elastic bodies 3BR, 3BL are attached to the edges of the sheet located on the skin-facing side of the inner pad 1, which is located inward of the elastic bodies in the widthwise direction. When worn, the sheet rises due to the force of the elastic bodies 3BR, 3BL, forming three-dimensional gathers. The elastic bodies 2 and the three-dimensional gathers allow the inner pad 1 to adhere closely to the wearer's skin. Body fluids excreted by the wearer are absorbed by the absorbent body 6 of the inner pad 1 without leaking from the inner pad 1. The elastic body material can be selected appropriately from rubber threads, rubber strips, etc.

[0020] 2 is an exploded perspective view of an inner pad according to an embodiment. The inner pad 1 comprises side sheets 8R, 8L that form three-dimensional gathers 3R, 3L by the biasing force of elastic bodies 3BR, 3BL, a top sheet 7, an absorbent body 6 with a gourd-shaped crotch portion, a back sheet 5, and a liquid-impermeable gourd-shaped cover sheet 4 that comprises elastic bodies 2, and these are layered in order from the skin-facing side to the non-skin-facing side. The absorbent body 6 is not present at the front and back body ends of the inner pad 1, and all sheets are bonded together.

[0021] Like the cover sheet 4, the back sheet 5 is made of a liquid-impermeable thermoplastic resin to prevent leakage of bodily fluids. The back sheet 5 is preferably made of a material that is also moisture-permeable to prevent stuffiness during wear. The top sheet 7 is made of an air-through nonwoven fabric containing thermoplastic resin fibers, and is positioned on the wearer's skin side so as to cover the water-absorbing surface of the absorbent body 6. The top sheet 7 is liquid-permeable in part or in its entirety. Therefore, when the diaper 1 is worn, bodily fluids released by the wearer pass through the top sheet 7, which comes into contact with the wearer's skin, into the absorbent body 6, and are absorbed therein. The top sheet 7 may also be hydrophilic. The longitudinal direction of the diaper 1 is the same as the longitudinal directions of the absorbent body 6 and the top sheet 7.

[0022] The back sheet 5, absorbent body 6, and top sheet 7 all extend from the front body region 1F to the back body region 1R. Therefore, when the wearer's genitals are covered with the cover sheet 4, in which the back sheet 5, absorbent body 6, and top sheet 7 are laminated, both longitudinal ends of the back sheet 5, absorbent body 6, and top sheet 7 are positioned on the wearer's ventral and dorsal sides.

[0023] The side sheets 8R, 8L are made of a moisture-permeable, water-impermeable nonwoven fabric. As mentioned above, one end of the side sheets 8R, 8L rises as three-dimensional gathers 3R, 3L due to the elasticity of the elastic bodies 3BR, 3BL, and adheres closely to the skin. This prevents excreta from leaking further in the width direction of the inner pad 1 when they come into contact with the side sheets 8R, 8L, and the moisture contained in the excreta is gradually absorbed by the absorbent body 6. The side sheets 8R, 8L have a water pressure resistance of 150 mmH2O. This prevents excreted urine from seeping out of the side sheets until it is absorbed by the absorbent body 6, even when it accumulates in the three-dimensional gathers. The center sheet 7 is made of a hydrophilic nonwoven fabric that feels pleasant against the skin. It directly receives bodily fluids by contacting the skin and gradually absorbs them into the absorbent body 6. It also prevents backflow of bodily fluids already absorbed by the absorbent body 6.

[0024] The absorbent body 6 is made of short fibers made of natural fibers such as pulp fibers, rayon fibers, or cotton fibers, or short fibers made of synthetic fibers such as polyethylene, polypropylene, or polyethylene terephthalate that have been hydrophilized. SAP (Super Absorbent Polymer), a hydrophilic polymer with a crosslinked structure that can absorb and retain water, is placed in the gaps between the short fibers. It has a structure that holds granular absorbent resin (polymer water absorbent material) such as do.

[0025] In this embodiment, SAP particles refer to a resin composition containing SAP in a granular form. The term "SAP-containing resin composition" as used herein encompasses both a composition consisting solely of SAP and a composition containing SAP as the main component and containing other substances to the extent that they do not adversely affect the water absorption properties. Examples of "other substances" include additives (such as surface modifiers added to hydrophobize the particle surface) and unreacted monomers remaining during the synthesis of SAP.

[0026] The short fibers and SAP particles contained in the absorbent body 6 are not necessarily scattered randomly, but are arranged in a way that is designed to serve their purpose. The short fibers quickly retain body fluids that have soaked into the absorbent body 6, but easily release them when pressure is applied. On the other hand, SAP particles do not immediately absorb body fluids when they come into contact with them, but once they have retained the fluid, they do not easily release it. By arranging both materials in appropriate positions, it is possible to create an absorbent body 6 that quickly absorbs body fluids and does not allow the absorbed fluid to flow back onto the skin surface even when pressure is applied.

[0027] The absorbent body 6 may be a stack of two or more sheets (multiple water-absorbing layers). For example, the skin-facing sheet may have a non-SAP-sprayed area where SAP particles are not sprayed, and this non-SAP-sprayed area serves as a flow path for body fluids, allowing the body fluids to spread efficiently throughout the internal structure of the absorbent body 6 and accelerating absorption. In this case, the non-skin-facing sheet may have a high density of short fibers and SAP particles to firmly retain the absorbed body fluids. The areas where these sheets contact each other function as flow paths for body fluids, but body fluid absorption capacity may also be imparted by spraying SAP particles between the sheets before stacking them.

[0028] As described above, the absorbent body 6 is gourd-shaped and spreads widthwise in the front body region 1F and the back body region 1R, forming so-called ear portions. The cover sheet 4 and the side sheets 8R, 8L are also bonded to the front body region 1F and the back body region 1R, spreading widthwise to wrap around the ear portions of the absorbent body 6. At the ear portions, the absorbent body 6 extends widthwise outward beyond the base ends (proximal ends) of the side sheets 8R, 8L.

[0029] Although not shown in the figure, the absorbent body 6 is covered with a water-permeable core wrap sheet 9 made of pulp fiber, nonwoven fabric, etc. The core wrap sheet 9 prevents the absorbent body 6 from losing its shape and prevents the SAP particles contained in the absorbent body 6 from scattering into other structures.

[0030] Figure 3 is a cross-sectional view of the crotch portion of an inner pad according to an embodiment. Specifically, it is a cross-sectional view of the inner pad 1 of Figure 1 taken along line AA. The side sheets 8R, 8L rise from both widthwise side surfaces of the absorbent body 6 near both widthwise ends of the inner pad 1, and are adhered with hot melt or the like to the top sheet 7 laminated on the skin-facing side of the absorbent body 6. The area beyond the adhesion position is not restricted, but the ends are biased by elastic bodies 3BR, 3BL, forming three-dimensional gathers 3R, 3L.

[0031] The three-dimensional gathers 3R, 3L rise diagonally from the rising position (base end) toward the center in the width direction. This creates a certain amount of space between the rising three-dimensional gathers 3R, 3L and the top sheet 7. In addition, the ends of the three-dimensional gathers 3R, 3L contact the skin surface nearly perpendicularly, which strongly prevents excrement from leaking in the width direction beyond the three-dimensional gathers 3R, 3L. If the excrement generated by the wearer is urine, the excrement that flows in the width direction spreads in the longitudinal direction while being restricted by the three-dimensional gathers 3R, 3L, and is subsequently absorbed by the absorbent body 6.

[0032] 4 is a cross-sectional view of the lower back portion of the inner pad according to the embodiment. This is a cross-sectional view of the inner pad 1 along line BB. Note that this drawing is a cross-sectional view of the front body region 1F, but the same applies to the back body region 1R. As shown in FIG. 1, the elastic bodies 3BR, 3BL are not present at the longitudinal ends of the inner pad, so the side sheets 8R, 8L are not biased. At this position, the side sheets 8R, 8L are also bonded to the top sheet 7 in the same direction (i.e., toward the inside in the width direction) with hot melt or the like from the rising position to beyond. In this way, by defining the folding direction from the longitudinal ends of the side sheets 8R, 8L to the waist region, it is possible to make it easier for the three-dimensional gathers 3R, 3L to face toward the inside in the width direction when the garment is unfolded for putting on.

[0033] FIG. 5 is a plan view of an inner pad with a weir in the flow path. The inner pad 1 has the same structure as that shown in FIG. 1, but includes a flow suppression section 10 that blocks fluid near the boundary between the crotch region 1B and the back body region 1R, just before the gourd-shaped absorbent body 6 expands widthwise outward in the back body region 1R. The flow suppression section 10 is formed by bonding the base of the three-dimensional gathers 3R, 3L to the top sheet 7 with hot melt adhesive, further inward in the widthwise direction than the rising positions of the side sheets 8R, 8L. The presence of the flow suppression section 10 prevents exudates that flow from the rising positions of the side sheets 8R, 8L through the space formed between the three-dimensional gathers 3R, 3L and the top sheet 7 from flowing from the crotch region 1B toward the back body region 1R. As a result, exudates are absorbed by the absorbent body 6 in the back body region 1R and prevented from reaching the so-called selvages.

[0034] Figure 6 is a cross-sectional view of the weir portion of an inner pad with a weir provided in the flow path. Specifically, it is a cross-sectional view of line CC in the inner pad 1 shown in Figure 5. In this figure, hot melt is further applied to the side sheets 8L, 8R widthwise inward of the positions where the three-dimensional gathers 3R, 3L are raised, and the side sheets 8L, 8R are bonded to the top sheet 7, forming a flow-suppressing portion 10. The presence of the flow-suppressing portion 10 prevents urine excreted near the front body region 1F from flowing through the space formed between the three-dimensional gathers 3R, 3L and the top sheet 7 to reach the back body region 1R, where it is absorbed and reaches the ear portions of the absorbent core 6.

[0035] The inner pad 1 described above prevents urine from penetrating into the so-called ear portions of the absorbent body 6 in the back body region 1R. As mentioned above, the wearer's buttocks come into contact with the so-called ear portions of the absorbent body 6. Even if the wearer turns diagonally and weight is applied between the buttocks and the bed, the so-called ear portions of the absorbent body 6 do not absorb a large amount of moisture, so that moisture released from the absorbent body 6 does not exceed the water pressure resistance of the side sheets 8R, 8L and leak onto the skin. Furthermore, because the side sheets 8R, 8L come into contact with the skin, they may wear during wear. However, even if the water pressure resistance of the side sheets 8R, 8L decreases due to wear, moisture will not leak onto the skin unless the so-called ear portions of the absorbent body 6 have absorbed a large amount of moisture.

[0036] This allows for the realization of an inner pad 1 in which the absorbent body 6 has a wide coverage area and exudates do not leak outward in the width direction of the three-dimensional gathers 3R, 3L even when the user's posture changes and pressure is applied to the buttocks. Furthermore, because the so-called ear portions of the absorbent body 6 do not need to absorb much moisture, the amount of SAP particles blended in the so-called ear portions can be reduced or SAP particles can be omitted, thereby reducing the amount of SAP particles required. Furthermore, when the absorbent body 6 is made up of two or more layers of sheets, the so-called ear portions may be made up of only some of those layers. In this way, the structure of the absorbent body can be simplified in the so-called ear portions, allowing the inner pad 1 to more easily conform to the body surface.

[0037] The above-mentioned inner pad was attached to an experimental doll equipped with a simulated urethra, and artificial urine was poured into it to check the change in the movement of the artificial urine due to the flow suppression unit 10. The experimental results are shown below. The artificial urine was prepared by mixing 776 g of urea (NH2CONH2), 321.6 g of sodium chloride (NaCl), and magnesium sulfate heptahydrate (MgSO4·7 81.8 g of calcium chloride dihydrate (CaCl2·2H2O), 33.4 g of calcium chloride dihydrate (CaCl2·2H2O), and 60 g of 0.5% Blue No. 1 aqueous solution were mixed and stirred at 700 rpm for more than 30 minutes to produce the product.

[0038] The inner pad is attached to a dummy doll with a urinary outlet, modeled after the human waist, with the orientation of the experimental doll and the orientation of the pad parallel, the center of the doll and the center of the absorbent part of the pad aligned, and the three-dimensional gathers are not twisted. After attaching it, the subject puts on outerwear (underwear) and secures the inner pad so that it is in close contact with the skin. Next, the experimental doll is tilted at a 30-degree angle with its stomach facing down and secured in place.

[0039] 150 ml of the aforementioned artificial urine was prepared and injected into the inner pad at a rate of 10 ml / sec from a metering pump through the simulated urethra. After completion of the procedure, the inner pad was left attached to the experimental doll for 10 minutes to allow the artificial urine to fully penetrate the inner pad, after which the inner pad was removed from the experimental doll. The artificial urine was colored blue, allowing visual observation of how the artificial urine flowed over the inner pad and where it was absorbed.

[0040] Figure 7 shows the results of pouring artificial urine from an experimental doll into an inner pad. As mentioned above, the artificial urine is colored blue, so the artificial urine penetrates the blue-colored areas of the inner pad. The dark spot in the center of the crotch region is the contact point of the simulated urethra. Figure 7(a) shows the results of pouring artificial urine into an inner pad without a flow control section. Because the experimental doll was tilted when the artificial urine was poured, the artificial urine was biased to the right side of the inner pad. It can also be seen that the artificial urine flows not only into the front body region but also into the back body region, and in the back body region, it reaches the so-called selvedge part of the absorbent body beyond the rising position of the three-dimensional gathers.

[0041] Figure 7(b) shows the results of passing artificial urine through an inner pad equipped with a flow suppression section. The conditions were the same as those in Figure 7(a), but the flow of artificial urine was suppressed by the effect of the flow suppression section, and it can be seen that the artificial urine did not reach the so-called ear sections of the absorbent body. In this way, the experiment also confirmed that the flow suppression section can prevent urine from reaching the ear sections of the rear body region of the absorbent body.

[0042] We also conducted experiments on the water pressure resistance of suitable side sheets, and the results are shown below. The JIS A Method (low water pressure method) (AATCC127, ISO811) is a standardized test method for water pressure resistance. This method involves applying water pressure to a test piece at a rate of 10 cm / min, and measuring the water pressure when three water droplets emerge.

[0043] Figure 8 is a table showing the results of an experiment on the water pressure resistance of a suitable side sheet. The experiment on the water pressure resistance of the side sheet was conducted using a method conforming to the standardized test method described above. For the materials constituting side sheets 8R and 8L with various water pressure resistances, the materials were formed into bags, and 150 ml of artificial urine was dripped into the bags. This experiment was conducted 10 times for each material, and the number of times the artificial urine oozed out from the bottom of the bag was counted. The artificial urine used had the same composition as that used in the above experiment, but without the addition of coloring agents. Whether the artificial urine had oozed out from the bottom of the bag was determined by stroking the bottom of the bag twice with the pad of an index finger.

[0044] If a material from which artificial urine has seeped out four or more times out of ten experiments (side sheet durability is indicated by an x) is used as the side sheets 8R and 8L, it is inappropriate as there is a high possibility that urine will pass through if it actually reaches the material. If a material from which artificial urine has seeped out two to three times out of ten experiments (side sheet durability is indicated by a △) is used as the side sheets 8R and 8L, the probability of stopping urine increases, but there is also a possibility that urine will pass through. If a material from which artificial urine has seeped out one or less time out of ten experiments (side sheet durability is indicated by a ◯), it will almost never allow urine to pass through. In reality, a considerable amount of urine is absorbed by the absorbent body 6 after excretion. Therefore, if such a material is used, urine that reaches the side sheets 8R, 8L will not permeate the side sheets 8R, 8L and leak in the width direction.

[0045] Since increasing the water resistance of a material more than necessary results in a poor wearing experience, it is preferable to use a material for the side sheets 8R and 8L that has a side sheet durability rating of 0 and the smallest water pressure resistance rating in the table. As a result of the experiment, it was found that the water pressure resistance of the side sheets 8R and 8L that satisfies the conditions is 150 mmH2O.

[0046] Although the features of the present invention have been described above in relation to embodiments, the present invention is not limited to the above embodiments. For example, in the above embodiment, the flow control section 10 is formed by bonding a certain section between the three-dimensional gathers 3R, 3L and the top sheet 7 with hot melt adhesive. This type of flow control section 10 is advantageous in that it does not require additional materials for formation and does not require significant changes to the manufacturing process. However, the flow control section 10 may also be formed by inserting a flow control sheet between the three-dimensional gathers 3R, 3L.

[0047] When the flow control section 10 is formed by bonding the three-dimensional gathers 3R, 3L and the top sheet 7 with hot melt, the rise height of the three-dimensional gathers 3R, 3L is limited where the flow control section 10 is present. There are areas where the rise height of the three-dimensional gathers 3R, 3L is limited, and if there is a large amount of excrement, the excrement may leak from those areas. If the flow control section 10 is a separate member and sandwiched between the three-dimensional gathers 3R, 3L and the top sheet 7, the same effect can be achieved without sacrificing the rise height of the three-dimensional gathers 3R, 3L. [Explanation of symbols]

[0048] 1. Inner pad 2. Leg gathers 3R, 3L...3D gathers 3BR, 3BL... Elastic body 4. Cover sheet 5. Back seat 6. Absorber 7. Top sheet 8R, 8L side seats 9. Core wrap sheet 10. Flow control section HM Hot Melt

Claims

1. An absorbent article having a front body region corresponding to an abdominal side of a wearer, a back body region corresponding to a back side of the wearer, and a crotch region located between the front body region and the back body region, a gourd-shaped absorbent body extending from the front body region to the back body region, the front body region and the back body region being wider in the width direction than the crotch region; a water-permeable top sheet covering the skin-facing side of the absorbent body; a non-permeable back sheet covering the non-skin-facing side of the absorbent body; a non-permeable side sheet having base ends near both widthwise ends of the crotch region, standing parallel to the longitudinal direction to form three-dimensional gathers that come into close contact with the skin of the wearer; Equipped with a flow control portion for blocking fluid is provided between the three-dimensional gathers and the top sheet between the crotch region and the rear body region, and on the front body region side of the gourd-shaped absorbent body that bulges outward in the width direction in the rear body region; In the crotch region and the back body region, the side sheets are bonded to the top sheet at rising positions of the three-dimensional gathers so that spaces are formed between the three-dimensional gathers and the top sheet in front and behind the flow control portion, The three-dimensional gathers as a whole rise only toward the inside in the width direction, and the roots thereof are bonded to the top sheet by the flow control portions, so that the rising width is shortened in the range where the flow control portions are formed. Absorbent articles.

2. The flow control section is formed by bonding the three-dimensional gathers and the top sheet together on the inner side in the width direction of the base end section. The absorbent article of claim 1.

3. The side sheets cover the skin side of the absorbent body on the widthwise outer sides of the base end portions of the three-dimensional gathers. The absorbent article according to claim 1 or 2.

4. The water pressure resistance of the side sheet is 150 mmH ２ It is O. The absorbent article according to any one of claims 1 to 3.

5. the amount of polymer water absorbent material blended in the gourd-shaped absorbent body is smaller on the outer side in the width direction of the base end portion of the standing gather than on the inner side in the width direction of the base end portion of the standing gather; The absorbent article according to any one of claims 1 to 4.

6. The gourd-shaped absorbent body is composed of a plurality of water-absorbing layers, and only some of the water-absorbing layers extend on the widthwise outer side of the base end portion of the standing gather. The absorbent article according to any one of claims 1 to 5.

7. The flow control portion is provided only on the rear body region side from the center in the longitudinal direction. The absorbent article according to any one of claims 1 to 6.

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