JP7429115B2 - absorbent articles - Google Patents

Description

The present invention relates to a structure for holding loose stools and an absorbent article including the same.

BACKGROUND OF THE INVENTION Absorbent articles such as diapers and sanitary napkins have been studied from various viewpoints such as leakage prevention, comfort, and ability to retain excreta. For example, Patent Document 1 discloses that an absorbent material is formed between a cover and a lining by being folded along a pair of parallel vertical folding lines to form one middle panel and two side panels. Absorbent products are described that include batting. According to Patent Document 1, the absorbent batting has a spring force that resists the force that crushes (deforms) the absorbent product caused by the movement of the wearer's body, so that distortion of the absorbent batting is prevented. This reduces leakage caused by the movement of the wearer.

Further, Patent Document 2 describes, from the skin-facing side in the thickness direction, a top sheet, a permeable sheet mainly made of water-repellent or hydrophobic fibers, and an absorbent element containing cotton-like pulp that retains excretory fluid. An absorbent article is disclosed in which the components are provided in this order, and the respective soft stool permeation rates of these constituent members have a predetermined magnitude relationship. According to Patent Document 2, loose stool can be quickly moved away from the skin and can be reliably stored and held at a position far from the skin.

Japanese Patent Application Publication No. 07-163619 Japanese Patent Application Publication No. 2006-141647

Absorbent bodies included in absorbent articles such as diapers usually contain absorbent materials such as fluff pulp and water-absorbing polymers. Such a general absorbent material has difficulty absorbing soft stool, which has a higher solid content than urine, and also has difficulty retaining it within the absorbent material. In some cases, leakage of loose stools is likely to occur. As a result, in addition to changing diapers, it takes time and effort to clean the wearer's body, change clothes, sheets, etc., and wash, disinfect, and dry these dirty items. Furthermore, if loose stool adheres to the skin, skin problems such as damage to skin tissue caused by the enzymes in the loose stool may occur. From the viewpoint of solving the various problems caused by such leakage of loose stools, there is a need for an absorbent body that is difficult to leak loose stools and has a high ability to retain soft stools.

Therefore, an object of the present invention is to provide a structure for retaining loose stools that exhibits excellent retention properties for loose stools, and an absorbent article including the same.

The present invention is a structure for holding soft stool, which has a soft stool holding part configured by folding back a holding sheet, and has a longitudinal direction and a width direction perpendicular to the longitudinal direction.
The holding sheet is mainly composed of non-water-absorbing synthetic fibers with a fiber diameter of 25 μm or more, and the distance between the constituent fibers is 200 μm or more and 600 μm or less,
In the soft stool holding portion, the holding sheet is folded back along the longitudinal direction at two or more locations spaced apart in the width direction, thereby forming a laminated structure portion in which two or more layers of the holding sheet overlap. has been
The present invention provides a soft stool holding structure in which opposing layers in the laminated structure are partially joined at the longitudinally extending linear joints.

Further, the present invention provides an absorbent article comprising the above-mentioned structure for holding soft stool and a liquid-permeable covering sheet that covers the surface of the structure for holding soft stool.

Further, the present invention includes the structure for holding soft stool, and an absorbent body having water-absorbing fibers and a water-absorbing polymer, and the structure for holding loose stool is arranged on the skin-facing side of the absorbent body. The present invention provides an absorbent article.

According to the present invention, it is possible to provide a structure for retaining loose stools that exhibits excellent retention properties for loose stools, and an absorbent article including the same.

FIG. 1 is a perspective view showing an embodiment of an absorbent article including a structure for holding loose stools according to the present invention. FIG. 2 is a sectional view taken along line II-II in FIG. FIG. 3 is a plan view showing the arrangement of joints in the soft stool holding structure of the absorbent article shown in FIG. 1. FIG. 4 is a view corresponding to FIG. 2 showing another embodiment of the laminated structure in the structure for holding loose stool. FIG. 5 is a plan view showing another embodiment of an absorbent article including the soft stool holding structure of the present invention. FIG. 6 is a sectional view taken along the line III--III in FIG. FIGS. 7A and 7B are cross-sectional views for explaining an example of a method for manufacturing the absorbent article shown in FIG. 5. FIG.

The present invention will be described below based on preferred embodiments thereof with reference to the drawings. FIG. 1 shows an absorbent article 1a including a structure for holding soft stool, which is an embodiment of the present invention. The soft stool holding structure of the present invention is used as a member for holding soft stool by being incorporated into an absorbent article such as a diaper. The absorbent article 1a shown in FIG. 1 is used by stacking it on the skin-facing surface (inner surface) of another absorbent article. As described above, an absorbent article that is used together as an inner layer for other absorbent articles and is suitably used for taking in and retaining soft stool is also referred to as a soft stool removal pad 1a hereinafter.

In this specification, the "skin-facing surface" of an absorbent article refers to the surface of the absorbent article or its constituent members (e.g., absorbent body) that faces toward the wearer's skin when the absorbent article is worn, that is, relatively This is the side closest to the wearer's skin. In addition, the "non-skin-facing surface" of an absorbent article refers to the surface of the absorbent article or its constituent members that faces the side opposite to the skin side (clothed side) when the absorbent article is worn, that is, the surface that faces the wearer relatively. The side furthest from the skin. Note that "when worn" here means a state in which the normal proper wearing position, that is, the correct wearing position of the absorbent article is maintained.

As shown in FIG. 2, the soft stool removal pad 1a includes a soft stool holding structure 10a and a liquid-permeable covering sheet 6 that covers the surface of the soft stool holding structure 10a. The soft stool holding structure 10a has a longitudinal direction X and a width direction Y perpendicular to the longitudinal direction. In this embodiment, the soft stool holding structure 10a has its longitudinal direction X aligned with the longitudinal direction _X1 of the soft stool removal pad 1a, and the width direction Y of the soft stool holding structure 10a is lateral to the soft stool removal pad 1a. It coincides with direction _Y1 . The vertical direction X ₁ of the soft toilet pad 1a is the longitudinal direction of the soft toilet pad 1a, and the horizontal direction Y ₁ is a direction perpendicular to the vertical direction X ₁ . The longitudinal direction X of the soft stool holding structure 10a may or may not coincide with the longitudinal direction of the absorbent article. The soft stool holding structure 10a has a thickness, and therefore the soft stool removal pad 1a has a thickness direction Z along the thickness.

The covering sheet 6 of this embodiment includes a first sheet 6a that covers one surface of the structure 10a for holding soft stool, and a sheet that is separate from the first sheet 6a. and a second sheet 6b covering the other surface. The second sheet 6b extends outward in the width direction Y from both sides of the soft stool holding structure 10a along the longitudinal direction and covers the other surface of the soft stool holding structure 10a. Instead, the first sheet 6a extends outward in the width direction Y from both side edges of the soft stool holding structure 10a along the longitudinal direction It may be rolled down to the surface side to cover one surface of the soft stool holding structure 10a. Further, the covering sheet 6 may be composed of one sheet. The first sheet 6a and the second sheet 6b in this embodiment are joined at their overlapping portions using a known joining means such as an adhesive. The soft stool holding structure 10a and the covering sheet 6 are preferably not joined on the outer side in the width direction Y, as described later, but the soft stool holding structure 10a and the covering sheet 6 are partially joined. They may be joined. In the case of joining, a known joining means such as an adhesive can be used.

The soft stool holding structure 10a of this embodiment is used with one of the surface covered by the first sheet 6a and the surface covered by the second sheet 6b facing the skin. One surface of the soft stool holding structure 10a may be used as a skin-facing surface, and the other surface may be used as a skin-facing surface.

As shown in FIG. 2, the soft stool holding structure 10a has a soft stool holding section 13 formed by folding back the holding sheet 11. The soft stool holding portion 13 is a portion of the soft stool holding structure 10a that holds soft stool. The holding sheet 11 is mainly composed of non-water-absorbing synthetic fibers having a fiber diameter of 25 μm or more. "A sheet composed mainly of non-water-absorbing synthetic fibers" is a synthetic fiber whose water absorption amount is 10% or less, preferably 5% or less, based on the weight of the fiber, as measured by the following measuring method. .

[Method of measuring water absorption]
First, five sheets using synthetic fibers to be measured are prepared. Such a sheet is obtained by taking out the soft stool holding structure 10a and cutting out five sheets of 70 mm x 70 mm from the holding sheet 11 which is unfolded. Next, prepare ion-exchanged water that is at least 10 times the weight _W0 of one sheet obtained and whose temperature is adjusted to 25°C, and immerse one sheet in the ion-exchanged water for 60±1 seconds. . Thereafter, the sheet is dehydrated using a centrifugal dehydrator (manufactured by Kokusan Co., Ltd., model H-130C special model) for 10 minutes at an acceleration condition of 167G. The weight _W1 of the sheet after centrifugal dehydration is measured, and the water absorption amount Wa is calculated using the following formula. The above measurements are performed on each of the five sheets cut out from the holding sheet 11, and the average value thereof is taken as the water absorption amount. The water absorption amount is preferably 10% or less, more preferably 5% or less.
Wa=(W ₁ -W ₀ )/W ₀ ×100(%)

Hereinafter, "non-water-absorbing synthetic fibers" will also be referred to as non-water-absorbing fibers. As the non-water-absorbing fibers, for example, fibers made from thermoplastic resin can be used, and it is preferable to use heat-fusible fibers that are fused together by the action of heat. Thermoplastic resins include polyolefins such as polyethylene (PE) and polypropylene (PP); polyesters such as polyethylene terephthalate (PET); polyamides such as nylon 6 and nylon 66; polyacrylic acid, polymethacrylic acid alkyl ester, polyvinyl chloride, Examples include polyvinylidene chloride, and one type of these can be used alone or two or more types can be used in combination. Further, a preferable example of the fibers constituting the holding sheet 11 is a composite fiber composed of two or more components, a low melting point component and a high melting point component. The conjugate fiber consisting of two or more components, a low-melting point component and a high-melting point component, is preferably a core-sheath type conjugate fiber, with the core preferably made of high-melting point PET or PP and the sheath made of low-melting point PET, PP, or PE. The core-sheath type composite fiber may be of a concentric type or an eccentric type.

The fiber diameter of the non-water absorbing fiber is 25 μm or more. From the viewpoint of further securing a space capable of accommodating loose stool, which will be described later, the fiber diameter is preferably 28 μm or more, more preferably 33 μm or more, and preferably 60 μm or less, more preferably 55 μm or less, and preferably It is 25 μm or more and 60 μm or less, more preferably 28 μm or more and 55 μm or less. Fiber diameter is measured by the following method. Hereinafter, non-water-absorbing fibers having a fiber diameter of 25 μm or more are also referred to as non-water-absorbing thick fibers.

<Method for measuring fiber diameter>
The sheet to be measured is cut with a razor (for example, a single-edged blade manufactured by Feather Safety Razor Co., Ltd.) to obtain a measurement piece having a rectangular shape (8 mm x 4 mm) in plan view. When cutting the object to be measured, care must be taken to ensure that the structure of the cut surface of the measurement piece formed by the cutting is not destroyed by the pressure during cutting. A preferred method for cutting the measurement target is to place the measurement target in liquid nitrogen to sufficiently freeze the measurement target prior to cutting the measurement target, and then to cut the measurement target. Attach the measurement piece to the sample stand using paper double-sided tape (for example, Nicetack NW-15 manufactured by Nichiban Co., Ltd.). The measurement piece is then coated with platinum. For coating, an ion sputtering device (for example, ion sputtering device E-1030 model manufactured by Hitachi Naka Seiki Co., Ltd.) is used, and the sputtering time is 30 seconds. The cut surface of the measurement piece is observed at a magnification of 1000 times using an electron microscope (for example, a field emission scanning electron microscope model S-4000 manufactured by Hitachi, Ltd.). Then, for the fibers present in the holding sheet, the length of 10 fibers in the width direction with respect to the longitudinal direction of the fibers is measured, and the average value thereof is taken as the fiber diameter.

The holding sheet 11 contains at least 50% by mass of non-water-absorbing thick fibers. The content of non-water absorbent thick fibers is preferably 70% by mass or more, more preferably 90% by mass or more.

From the viewpoint of improving the uptake of soft stool in the soft stool holding structure 10a, the non-water absorbent thick fibers are preferably hydrophilic. Examples of such fibers include those obtained by subjecting hydrophobic thermoplastic fibers to a hydrophilic treatment. Examples of hydrophilized thermoplastic fibers include thermoplastic fibers kneaded with a hydrophilic agent, thermoplastic fibers with a hydrophilic agent attached to the surface, thermoplastic fibers subjected to plasma treatment, etc. . As the hydrophilic agent, general hydrophilic agents used for sanitary products, such as ordinary surfactants, can be used. "Hydrophilic" means that the contact angle of the fiber with water is less than 90 degrees. The contact angle of fibers with water can be measured, for example, according to the method described in JP-A-2015-142721.
The holding sheet 11 may contain other fibers in addition to the non-water absorbent thick fibers. Other fibers include, for example, non-water-absorbing synthetic fibers with a fiber diameter of less than 25 μm, natural or semi-natural fibers such as cellulose fibers, and the like.

The distance between the constituent fibers of the holding sheet 11 is 200 μm or more and 600 μm or less. This inter-fiber distance is the inter-fiber distance of the constituent fibers including non-water absorbent thick fibers and other fibers. The interfiber distance is measured by the following method.

<Method for measuring interfiber distance>
The inter-fiber distance of a fiber aggregate of nonwoven fabric, paper, etc. is determined by the following formula (1) based on Wrotnowski's assumption. The following formula (1) is generally used when determining the inter-fiber distance of a fiber aggregate. Under Wrotnowski's assumption, the fibers are cylindrical and are arranged regularly without intersecting each other.
First, the distance between fibers in the holding sheet is calculated using the following formula (1). The thickness t, basis weight W, fiber resin density ρ, and fiber diameter D used in the following formula (1) are average values of measured values at arbitrary plural measurement points in the soft stool holding part.
The thickness t (mm) is measured by the following method. First, a sheet to be measured is cut into pieces of 50 mm in the longitudinal direction and 50 mm in the width direction to produce cut pieces of the sheet. However, if a cut piece of this size cannot be produced as the sheet to be measured, a cut piece as large as possible is produced. Next, place this cut piece on a flat plate, place a flat glass plate on top of it, place weight evenly on the glass plate so that the load including the glass plate is 49 Pa, and then Measure the thickness of the piece. The measurement environment is a temperature of 20±2° C. and a relative humidity of 65±5%, and a microscope (manufactured by Keyence Corporation, VHX-1000) is used as the measuring device. To measure the thickness of the cut piece, first, an enlarged photograph of the cut surface of the cut piece is obtained. In this enlarged photograph, objects of known dimensions are also photographed. Next, scale is adjusted to an enlarged photograph of the cut surface of the cut piece, and the thickness of the cut piece is measured. The above operation is performed three times, and the average value of the three times is taken as the thickness t of the holding sheet.

The basis weight W (g/m ² ) is determined by cutting the sheet to be measured into a predetermined size (for example, 12 cm x 6 cm), measuring the mass, and then converting the measured mass value to the area determined from the predetermined size. (Basic weight W (g/m ² ) = mass ÷ area determined from a predetermined size). This measurement is repeated four times, and the average value is taken as the basis weight.
The resin density ρ (g/cm ² ) of the fiber is measured using a density gradient tube according to the density gradient tube method described in JIS L1015 Chemical Fiber Staple Test Method (URL: http://kikakurui. com/l/L1015-2010-01.html, and the book JIS Handbook Textile-2000 (Japanese Standards Association), pages 764-765).
The method for measuring the fiber diameter D follows the above-mentioned <Method for measuring fiber diameter>.

In the soft stool holding portion 13, the holding sheet 11 is folded back along the longitudinal direction X at two or more locations spaced apart from each other in the width direction Y. As shown in FIG. 2, the holding sheet 11 of the present embodiment is folded back toward the side of the soft stool holding structure 10a covered with the second sheet 6b at both ends of the soft stool holding section 13 in the width direction Y. It is. In FIG. 2, the folding position of the holding sheet 11 is indicated by E. By folding back the holding sheet 11, a laminated structure part 14 in which two or more layers of the holding sheet 11 are overlapped is formed in the soft stool holding part 13. The soft stool holding portion 13 of this embodiment includes a folded portion 16 that is folded back at the folded position E of the holding sheet 11, and a non-folded portion 15 that faces the folded portion. The folded portion 16 and the non-folded portion 15 are laminated to form a two-layer laminated structure portion 14. In the laminated structure portion 14 of this embodiment, the non-folded portion 15 is also referred to as the first layer 15, and the folded portion 16 is also referred to as the second layer 16.

As shown in FIG. 2, the opposing layers 15 and 16 in the laminated structure 14 are partially joined at a joint 19. The joint portion 19 has a linear shape extending in the longitudinal direction X, as shown in FIG. The joint portion 19 can be formed by a known joining means such as an adhesive. The joint portion 19 of this embodiment is formed by applying an adhesive such as a hot melt adhesive in a spiral shape so as to extend in the longitudinal direction X. As in the present embodiment, the linear joint is formed linearly so that a coated part and a non-coated part coexist, and has a constant width in the width direction Y by having a non-coated part. It also includes the form. Although the joint portion 19 is shown in FIG. 3 in a spiral shape including a non-coated portion, the non-coated portion of the joint portion 19 is not shown in FIG. 2 for ease of explanation.
When forming the joint 19 using an adhesive, the adhesive may be applied in a single straight line or in a wavy line between the opposing layers 15 and 16, and there may be a mixture of applied and non-applied areas. It may be applied intermittently. Examples of adhesive application include spiral, omega, curtain, and stripe shapes.

Using the case where the surface covered by the first sheet 6a is used as the skin facing surface as an example, retention of the soft stool excreted on the soft stool removal pad 1a will be explained. The soft stool passes through the liquid permeable first sheet 6a and moves to the soft stool holding structure 10a, more specifically to the soft stool holding section 13. In the soft stool holding section 13, since the holding sheet 11 is mainly composed of the above-mentioned non-water-absorbing thick fibers, it is easy to maintain the above-mentioned inter-fiber distance. Therefore, loose stools that are fluid and contain solids easily enter between the fibers. Furthermore, since the holding sheet 11 has the laminated structure portion 14 formed by folding back, a space (gap) capable of accommodating loose stool is also formed between the first layer 15 and the second layer 16. To explain this point in detail, in the laminated structure part 14, the restoring force of the folded sheet 11 to return to the unfolded state is the force that maintains the thickness of the laminated structure part 14, or the force between the first layer 15 and the second layer 15. It acts as a force to separate the layer 16. Therefore, the space within the holding sheet 11 and the space (gap) between the first layer 15 and the second layer 16 function as a space that can accommodate soft stool, and even if it comes into contact with urine or soft stool, the volume of the space remains is easy to maintain. Since the soft stool holding structure 10a has such a soft stool holding portion 13, it exhibits excellent retention properties and can effectively suppress leakage of loose stool to the outside. In addition, since the soft stool removal pad 1a has the structure 10a for holding soft stool, when used together with an absorbent article disposed on the non-skin-facing side of the pad 1a, the loose stools in the absorbent article can cause gaps between the fibers of the absorbent article. clogging can be prevented, and a decline in the absorbent performance of the absorbent article can be effectively suppressed.
The soft stool holding structure 10a of the present embodiment exhibits the above-described effects even when the surface covered with the second sheet 6b is used as the skin-facing surface.

In the soft stool holding structure 10a of the present embodiment, a space (gap) is formed between the first layer 15 and the second layer 16. Even if a space (gap) is not formed, a space capable of accommodating soft stool is secured. For example, even if the first layer 15 and the second layer 16 in the laminated structure part 14 are in contact with each other, since the holding sheet 11 is folded back, the above-mentioned restoring force acts, and the upper surface of the first layer 15 and the lower surface of the second layer 16 can be maintained long. That is, since the thickness of the laminated structure portion 14 can be maintained large, a space capable of accommodating soft stool can be secured.

From the viewpoint of more reliably securing a space that can accommodate soft stool, the fineness of the non-water absorbent thick fiber is preferably 7 dtex or more, more preferably 10 dtex or more, and preferably 33 dtex or less, more preferably 23 dtex or less, Further, it is preferably 7 dtex or more and 33 dtex or less, more preferably 10 dtex or more and 23 dtex or less.

From the viewpoint of further improving the retention property, the thickness T3 (see FIG. 2) of the holding sheet 11 is preferably 3 mm or more, more preferably 5 mm or more, and preferably 27 mm or less, more preferably 20 mm or less, Moreover, it is preferably 3 mm or more and 27 mm or less, more preferably 5 mm or more and 20 mm or less. The thickness T3 of the holding sheet 11 is measured using a non-contact laser displacement meter (for example, KEYENCE laser head LK-2100, displacement meter RV 3-55 R) after unfolding the folded part of the soft stool holding part 13. do. The pressure during thickness measurement is 0.5 g/cm ² . The measurement was performed five times, and the average value was taken as the thickness T3 of the holding sheet 11.
The thickness T3 of the holding sheet 11 is the thickness of each layer 15, 16 of the laminated structure portion 14.

The number of layers of holding sheets 11 in the laminated structure portion 14 is two or more. From the viewpoint of more reliably securing a space capable of accommodating loose stool, the number of layers of holding sheets 11 in the laminated structure section 14 is preferably 2 to 4 layers, more preferably 2 to 3 layers.
From the same viewpoint as above, the thickness T1 (see FIG. 2) of the laminated structure portion 14 is preferably 8 mm or more, more preferably 10 mm or more, and preferably 60 mm or less, more preferably 50 mm or less, and preferably is 8 mm or more and 60 mm or less, more preferably 10 mm or more and 50 mm or less.

From the viewpoint of more reliably securing the holding capacity for soft stool, the basis weights of the soft stool holding portion 13 and the holding sheet 11 are preferably within the following ranges.
The basis weight of the soft stool holding portion 13 is preferably 40 g/m ² or more, more preferably 80 g/m ² or more, and preferably 200 g/m ² or less, more preferably 160 g/m ² or less, and also preferably is 40 g/m ² or more and 200 g/m ² or less, more preferably 80 g/m ² or more and 160 g/m ² or less.
The basis weight of the holding sheet 11 is preferably 20 g/m ² or more, more preferably 40 g/m ² or more, and preferably 80 g/m ² or less, more preferably 60 g/m ² or less, and preferably It is 20 g/m ² or more and 80 g/m ² or less, more preferably 40 g/m ² or more and 60 g/m ² or less.

From the same viewpoint as above, the density of the holding sheet 11 is preferably 0.02 g/cm ³ or more, more preferably 0.003 g/cm ³ or more, and the upper limit is 0.007 g/cm 3 or more. It is preferably ³ or less, more preferably 0.006 g/cm ³ or less. The density of the holding sheet 11 is calculated by dividing the basis weight of the holding sheet 11 by the thickness of the holding sheet 11.

In this embodiment, both sides of the holding sheet 11 are folded back in the same direction in the soft stool holding section 13 (see FIG. 2). In other words, in the soft stool holding portion 13, the holding sheet 11 has portions 16, 16 folded back to the same side of the holding sheet 11. In the soft stool holding section 13 of this embodiment, the holding sheet 11 is covered with one side of both surfaces of the soft stool holding structure 10a, specifically, with the second sheet 6b, at each of the folding positions E and E. It is folded back to the side. Instead, at each of the folding positions E and E, the holding sheet 11 is folded back to the other side of both surfaces of the soft stool holding structure 10a, specifically, to the side covered with the first sheet 6a. You can leave it there.

In the soft stool holding structure, the holding sheet 11 may be folded back in different directions. In other words, in the soft stool holding portion 13, the holding sheet 11 may have a portion 16 that is folded back on one side of the holding sheet 11 and a portion 16 that is folded back on the other side of the holding sheet 11. . In such a case, at some of the two or more folding positions E, the holding sheet 11 is folded back to one side of both surfaces of the soft stool holding structure 10a, and at the remaining folding positions E, the holding sheet 11 11 is folded back on the other side of the both sides. For example, at some of the two or more folding positions E, the holding sheet 11 is folded back toward the side of the soft stool holding structure 10a that is covered with the first sheet 6a, and the remaining folding positions E In this example, the holding sheet 11 is folded back toward the side of the soft stool holding structure 10a that is covered with the second sheet 6b.

From the viewpoint of more reliably securing a space capable of accommodating soft stool, in a cross-sectional view along the width direction Y of the soft stool holding structure 10a, lamination is made for the length W1 (see FIG. 3) of the soft stool holding portion 13 in the width direction Y. The ratio ( W2/W1 ) of the length W2 (see FIG. 2) of the structural portion 14 in the same direction Y is preferably 1/2 or more, more preferably 2/3 or more.
From the same viewpoint as above, the length W1 (see FIG. 3) of the soft stool holding portion 13 in the width direction is preferably 100 mm or more, more preferably 120 mm or more, and preferably 250 mm or less, more preferably 200 mm or less. The length is preferably 100 mm or more and 250 mm or less, more preferably 120 mm or more and 200 mm or less.
From the same viewpoint as above, the length W2 of the laminated structure portion 14 in the same direction Y (see FIG. 2) is preferably 50 mm or more, more preferably 60 mm or more, and preferably 250 mm or less, more preferably 200 mm or less. The length is preferably 50 mm or more and 250 mm or less, more preferably 60 mm or more and 200 mm or less.

From the viewpoint of capturing soft stool more easily, the length L1 (see FIG. 3) of the soft stool holding portion 13 in the longitudinal direction is preferably 150 mm or more, more preferably 200 mm or more, and preferably 350 mm or less, more preferably is 300 mm or less, preferably 150 mm or more and 350 mm or less, more preferably 200 mm or more and 300 mm or less.

From the viewpoint of maintaining the folding of the holding sheet 11 well and improving the cushioning properties of the laminated structure part 14, in the cross-sectional view along the width direction Y of the soft stool holding structure 10a, the width direction Y of the soft stool holding part 13 is When dividing the length into four equal parts, the joint 19 is formed in two parts M, M (hereinafter also referred to as central regions M, M) located at the center in the same direction Y. It is preferable that the Such a configuration includes a configuration in which the entire or part of the joint portion 19 in the width direction Y is disposed within the central regions M, M. When the cushioning properties of the laminated structure part 14 are improved, the thickness of the laminated structure part 14 can be easily restored, so that a space capable of accommodating loose stool can be more easily secured.

If a part of the joint 19 is located within the central regions M, M, the length of the joint 19 in the width direction Y is W3, and the part of the joint 19 located within the central region M, M is When the length of the portion in the same direction Y is W4 (see FIG. 2), the ratio of W4 to W3 (W4/W3) is preferably 1.3 or more and 5.3 or less, more preferably 2.7 or more and 4 It is as follows. With such a configuration, the folding of the holding sheet 11 can be maintained better. From the same viewpoint as above, it is more preferable that the entire joint portion 19 is disposed in the central regions M, M.

From the viewpoint of further improving the cushioning properties of the laminated structure part 14, the ratio of the length W3 in the width direction Y of the joint part 19 (see FIG. 2) to the length W2 in the width direction Y of the laminated structure part 14 (see FIG. 2). (W3/W2) is preferably 0.1 or more and 0.5 or less, more preferably 0.15 or more and 0.4 or less. When the bonded portion 19 includes the above-mentioned non-coated portion, the length W3 of the bonded portion 19 in the width direction Y is a length including the non-coated portion.

In the present embodiment, the first sheet 6a and the second sheet 6b have joint portions 19 applied thereto extending from both ends at the extending portions extending from both ends of the soft stool holding structure 10a in the longitudinal direction X. (See FIG. 3). In place of or in addition to the joint part 19 that joins the opposing layers 15 and 16 in this laminated structure part 14, the first sheet 6a and the second sheet 6b are connected to each other in the extending part. They may be joined to each other by other joints made of an adhesive separately applied to the extensions.

From the viewpoint of improving the recovery property of the thickness of the soft stool holding part 13, it is preferable that the soft stool holding part 13 is not joined to the covering sheet 6 on the outer side in the width direction Y. In the cross-sectional view along the width direction Y, the soft stool holding part 13 of the present embodiment is divided into four areas by dividing the length of the soft stool holding part 13 in the width direction Y into four areas. In the two divided regions S, S (hereinafter also referred to as outer regions S, S) located at , the first sheet 6a and the second sheet 6b are not joined (see FIG. 2). Specifically, in the outer regions S, S, the first layer 15 is not joined to the first sheet 6a facing the first layer 15, and the second layer 16 is not joined to the first sheet 6a facing the first layer 15. It is not joined to the opposing second sheet 6b. Further, in the outer regions S, S, the side portions of the soft stool holding section 13 and the second sheet 6b are not joined.

From the same viewpoint as above, the length L3 (see FIG. 2) of the covering sheet 6 in the height direction of the soft stool removal pad 1a, that is, the thickness direction Z of the soft stool holding structure 10a, is equal to the height T1 of the soft stool holding part 13. (See FIG. 2). The second sheet 6b of this embodiment is bent at the side portions of the soft stool removal pad 1a, and has a length longer than the height T1 of the soft stool holding portion 13 in the height direction of the soft stool removal pad 1a. . Thereby, recovery of the thickness of the soft stool holding portion 13 is less likely to be suppressed by the covering sheet 6, and the recovery of the thickness is further improved. The thickness of the soft stool holding part 13 is synonymous with the height of the soft stool holding part 13. From the viewpoint of achieving this effect more reliably, the length L3 (see FIG. 2) of the covering sheet 6 in the height direction of the soft stool removal pad 1a is based on the height T1 (see FIG. 2) of the soft stool holding portion 13. (100%), preferably 130% or more, more preferably 150% or more, and preferably 250% or less, more preferably 200% or less, and preferably 130% or more and 250% or less, more preferably It is 150% or more and 200% or less.

The soft stool holding part 13 of this embodiment had a structure in which two layers of the holding sheet 11 were laminated, but as in the soft stool removal pad 1b shown in FIG. In addition to the second layer 16, an intermediate layer 17 located between these two layers 15 and 16 may be included. The intermediate layer 17 is a single layer or a plurality of layers located between the first layer 15 and the second layer 16. That is, in the laminated structure portion 14, as shown in FIG. 4, three or more layers of holding sheets 11 may be laminated. In the soft stool holding section 13 shown in FIG. 4, the holding sheet 11 is folded back at two places. In the holding sheet 11 having such a configuration, a portion folded back at one folding position E1 so as to face the first layer 15 forms the intermediate layer 17. Further, a portion that is continuous with the first layer 15 and is folded back so as to face the intermediate layer 17 at the other folding position E2 constitutes the second layer 16.

As described above, the soft stool-removing pad 1a may have the surface covered with the first sheet 6a as the skin-facing surface, or the surface covered with the second sheet 6b as the skin-facing surface. It is preferable that soft stool can be taken in from both sides in this way, for example, by folding the soft stool removal pad 1a into two or three, the pad 1a becomes bulkier and the retention of soft stool is further improved.

In the soft stool removal pads 1a and 1b in the embodiments described above, the soft stool holding portion 13 is composed of one holding sheet 11 in a folded state. Alternatively, the soft stool holding section 13 may be configured by stacking a plurality of folded separate holding sheets 11. For example, like a soft stool holding structure 10c of a second embodiment described later, the soft stool holding section 13 may be configured by stacking two folded separate holding sheets 11.

Each component of the soft stool removal pads 1a and 1b in the embodiment described above will be explained.
The holding sheet 11 constituting the soft stool holding part 13 may be a known material such as an air-through nonwoven fabric, a spunbond nonwoven fabric, a spunlace nonwoven fabric, a meltblown nonwoven fabric, a resin bonded nonwoven fabric, a needle punched nonwoven fabric, or a laminate made of a combination of two or more of these nonwoven fabrics. Non-woven fabrics can be used. From the viewpoint of easily forming a space capable of accommodating loose stool, it is preferable to use an air-through nonwoven fabric for the holding sheet 11.
The covering sheet 6 is preferably a liquid-permeable sheet, and specific examples thereof include single-layer or multi-layer nonwoven fabrics, perforated films, etc. manufactured by various known manufacturing methods.

As the covering sheet 6, any liquid-permeable sheet conventionally used in the technical field can be used without particular limitation. Examples of the covering sheet 6 include paper such as tissue paper, fiber sheets such as hydrophilic nonwoven fabrics (hydrophilized nonwoven fabrics, nonwoven fabrics containing hydrophilic fibers, etc.), and perforated films. The covering sheet 6 is preferably liquid permeable and hydrophilic as described above.

A method of manufacturing the soft stool removal pads 1a and 1b in the above-described embodiment will be explained. First, an adhesive is applied to the inner side of the elongated holding sheet 11 in the width direction Y along the longitudinal direction of the holding sheet 11. This holding sheet 11 is folded back at two or more folding positions, and the layers facing each other are joined by the adhesive. The "opposing layers" are the first layer 15 and the second layer 16 in the soft toilet pad 1a, and the first layer 15 and the intermediate layer 17, and the intermediate layer 17 and the second layer 16 in the soft toilet pad 1b. It is. By the above joining, the soft stool holding portion 13 is formed, and the soft stool holding structures 10a and 10b are obtained. The second sheet 6b is arranged on one side of the obtained soft stool holding structures 10a and 10b, and the first sheet 6a is placed on the other side of the soft stool holding part 13, and the first sheet 6a and the first sheet One of the two sheets 6b is rolled up on the side where the other sheet is placed. Thereby, the surfaces of the soft stool holding structures 10a and 10b are covered with the covering sheet 6. In this way, soft stool removal pads 1a and 1b are obtained.

Next, another embodiment (second embodiment) of an absorbent article including the structure for retaining loose stool of the present invention will be described with reference to FIGS. 5 and 6. Regarding the diaper 1c shown in FIGS. 5 and 6, components that are different from the absorbent article (soft stool removal pad 1a) of the first embodiment shown in FIGS. 1 to 4 will be mainly explained, and similar components have the same reference numerals. will be added and the explanation will be omitted. For components that are not particularly described, the description of the embodiment described above applies as appropriate.

The diaper 1c of this embodiment includes a soft stool holding structure 10c and an absorbent body 24 having water-absorbing fibers and a water-absorbing polymer. In the diaper 1c, a soft stool holding structure 10c is arranged on the skin-facing side of the absorbent body 24. As shown in FIG. 6, the diaper 1c of this embodiment includes a top sheet 23 and a back sheet 25, and further includes an absorbent body 24 and a soft stool holding structure 10c located between these sheets 23 and 25. . In the diaper 1c, the top sheet 23 forms a skin-facing surface, and the back sheet 25 forms a non-skin-facing surface.

When worn, the diaper 1c has a ventral part A disposed on the ventral side of the wearer, a dorsal part B disposed on the dorsal side of the wearer, and a space between the ventral part A and the dorsal part B. It has a crotch area C located at . The diaper 1c has a longitudinal direction X1 corresponding to the direction extending from the abdominal part A to the back part B via the crotch part _C , and a transverse direction _Y1 orthogonal to the longitudinal direction _X1 . The longitudinal direction _X1 of the diaper 1c coincides with the longitudinal direction X of the soft stool holding structure 10c, and the lateral direction _Y1 of the diaper 1c corresponds with the width direction Y of the soft stool holding structure 10c. The diaper 1c has a shape that is substantially symmetrical with respect to a vertical center line CL that divides the length in the horizontal direction _Y1 into two and extends in the vertical direction _X1 .

The diaper 1c of this embodiment has a constricted part near the crotch C in the longitudinal direction _X1 , and the ventral side part A and the back side part B have widths wider than the constricted part. Further, the dorsal side part B has a wider width than the ventral side part A.

The topsheet 23 covers the skin-facing surface of the soft stool-holding structure 10c and the skin-facing surface of the portion of the absorber 24 that does not overlap with the soft stool-holding structure 10c. Further, the back sheet 25 disposed on the non-skin facing side of the absorbent body 24 covers the entire area of the non-skin facing side of the absorbent body 24, and further extends in the width direction from each of both side edges along the longitudinal direction X of the absorbent body 24. It has an extending portion extending outward from Y. At this extending portion, the back sheet 25 is joined to a side sheet 26b, which will be described later, by a known joining means. Examples of known bonding means include adhesives, heat seals, ultrasonic seals, high frequency seals, and the like.

As shown in FIG. 6, the absorbent core 24 has a two-layer structure and includes an upper absorbent core 35a and a lower absorbent core 35b. The upper absorbent core 35a and the lower absorbent core 35b each cover an absorbent core 30 that is a main absorbing site for body fluids such as urine and has a function of absorbing and retaining the body fluid, and the absorbent core 30. It has core wrap sheets 27a, 27b, and 27c. The absorbent core 30 includes water-absorbing fibers 33 and a water-absorbing polymer 31. In the upper absorbent core 35a, the entire skin-facing surface of the absorbent core 30 is covered with the skin-facing side core wrap sheet 27a, and the entire non-skin-facing side of the absorbent core 30 is covered with the non-skin-facing side core wrap sheet. 27b. In the lower absorbent body 35b, the absorbent core 30 is covered with one core wrap sheet 27c. The core wrap sheet 27c extends outward in the horizontal direction Y1 from both side edges of _the absorbent core 30 along the longitudinal direction _X1 , and its extended portion is rolled up above the absorbent core 30 to The entire skin-facing surface of the absorbent core 30 is covered. These core wrap sheets 27a, 27b, 27c and the absorbent core 30 are joined to each other by a known joining means such as an adhesive.

The upper absorbent core 35a and the lower absorbent core 35b have a plurality of non-stacked portions 37 through which the absorbent core 30 penetrates in the thickness direction Z. The non-stacked portion 37 in the upper absorbent core 35a overlaps the non-stacked portion 37 in the lower absorbent core 35b (see FIG. 6).

In the diaper 1c of this embodiment, as shown in FIG. 6, the absorbent body 24 and the soft stool holding structure _10c are provided on both left and right sides along the longitudinal direction A pair of leak-proof cuffs 26, 26 are provided that stand up toward the front. The leak-proof cuff 26 has a proximal end facing the top sheet 23 in the thickness direction Z, and stands _upright with a free end facing the wearer's skin. The member 26a is arranged in an extended state (see FIG. 5). The elastic member 26a extends at least over the entire length of the crotch portion C in the longitudinal direction _X1 , and in this embodiment further extends over the portions of the abdominal portion A and the dorsal portion B that are closer to the crotch portion C.
Each leak-proof cuff 26 includes, in addition to the elastic member 26a, one side sheet 26b forming the base end and the free end, and the side sheet 26b includes, as shown in FIG. It extends outward from the absorbent body 24 in the lateral direction _Y1 and is joined to the back sheet 25.

In the soft stool holding structure 10c of this embodiment, the soft stool holding section 13 is configured by stacking two folded separate holding sheets 11a and 11b. In this way, the soft stool holding section 13 may be constituted by a plurality of separate holding sheets 11. In the soft stool holding section 13, the holding sheet on the side facing the skin is also referred to as the upper holding sheet 11a, and the holding sheet on the side of the non-skin facing side is also referred to as the lower holding sheet 11b. Each of these holding sheets 11a and 11b has a folded structure similar to the form shown in FIG. 4 described above.

In the soft stool holding structure 10c of this embodiment, the holding sheets 11a and 11b are folded back along the longitudinal direction ₁ and _E2 appear (see Figure 6). Alternatively, the holding sheets 11a and 11b may be folded back along the width direction Y. In this case, in a cross-sectional view along the longitudinal direction X, the folding positions E ₁ and E ₂ appear. That is, the holding sheets 11a and 11b may be folded back along the longitudinal direction _X1 of the diaper 1c, or may be folded back along the horizontal direction _Y1 of the diaper 1c. Furthermore, the longitudinal direction _X of the soft stool holding structure 10c in this embodiment matches the longitudinal direction It does not have to match _X1 .

The entire surface of the soft stool holding structure 10c facing the skin is covered with a top sheet 23. The top sheet 23 extends outward in the horizontal direction _Y1 from both side edges of the soft stool holding structure 10c along the vertical direction _X1 . By disposing this extending portion on the side of the soft stool holding structure 10c along the thickness direction Z, the side surface of the soft stool holding structure 10c is covered. The soft stool holding structure 10c is arranged on the skin-facing core wrap sheet 27a of the upper absorbent body 35a.

The diaper 1c, like the soft stool removal pads 1a and 1b shown in FIGS. 1 to 4 described above, can secure a space capable of accommodating soft stool in the soft stool holding structure 10c included in the diaper 1c. Furthermore, since the diaper 1c includes the absorbent body 24 on the non-skin-facing side of the soft stool holding structure 10c, the diaper 1c can be used alone without using other absorbent articles. For example, when urine is excreted in the diaper 1c, the urine passes through the top sheet 23 and the soft stool holding structure 10c, and is absorbed into the absorbent body 24. On the other hand, when soft stool is excreted, the soft stool passes through the top sheet 23 and is held inside the soft stool holding structure 10c.

As shown in FIG. 6, the soft stool holding structure 10c of the present embodiment is disposed on the absorbent body 24, and as shown in FIG. It is arranged on the dorsal part B side in X1. Thereby, the soft stool excreted into the diaper 1c can be easily taken in. In order to more reliably achieve this effect, the soft stool holding structure 10c is preferably disposed between the center of the crotch C and the center of the back side B in the longitudinal direction _X1 .

The diaper 1c may have a fold line along the lateral direction _Y1 (not shown) from the viewpoint of easy storage in a packaging bag or the like. The soft stool holding structure 10c is located closer to the dorsal side B than the center of the crotch C in the _longitudinal direction If so, it is preferable that the soft stool holding structure 10c is arranged so that the folding positions E ₁ and E ₂ of the holding sheet 11 in the soft stool holding section 13 do not overlap with the fold line. With this configuration, it is possible to effectively prevent the holding sheet 11 from being crushed in the thickness direction Z while the diaper 1c is housed in the packaging bag, and it is possible to more reliably secure a space capable of accommodating loose stools.

From the viewpoint of improving the recovery property of the thickness of the soft stool holding part 13, the soft stool holding part 13 has a structure in which the soft stool holding part 13 and an adjacent sheet member are joined in a cross-sectional view along the lateral direction _Y1 (width direction Y). It is preferable not to. In the soft stool holding part 13 of the present embodiment, in the cross-sectional view, outer regions S, S located on both sides in the width direction Y extend from both side edges along the longitudinal direction _X1 of the soft stool holding structure 10c. It is adjacent to the top sheet 23. Furthermore, in the cross-sectional view, the outer regions S, S of the soft stool holding portion 13 are adjacent to the top sheet 23 and the skin-facing side core wrap sheet 27a, respectively. The soft stool holding portion 13 is not joined to the top sheet 23 and the skin-facing side core wrap sheet 27a in the outer regions S, S, respectively. Specifically, in the outer regions S, S, the first layer 15 of the upper holding sheet 11a is not joined to the top sheet 23 facing the first layer 15, and the second layer 15 of the lower holding sheet 11b is The layer 16 is not joined to the skin-facing side core wrap sheet 27a that faces the second layer 16. Further, in the outer regions S, S, the side portions of the soft stool holding portion 13 and the top sheet 23 are not joined.

From the viewpoint of ensuring the recoverability of the thickness of the soft stool holding part 13, the length of the sheet member adjacent to the soft stool holding part 13 in the width direction Y in the height direction of the diaper 1c, that is, the thickness direction Z of the soft stool holding structure 10c. The length L5 (see FIG. 6) is preferably longer than the thickness T2 (see FIG. 6) of the soft stool holding portion 13. From the same viewpoint as above, the length L5 (see FIG. 6) of the sheet member in the height direction of the diaper 1c is preferably 130%, based on the thickness T2 (see FIG. 6) of the soft stool holding portion 13 % or more, more preferably 150% or more, and preferably 250% or less, more preferably 200% or less, and preferably 130% or more and 250% or less, and more preferably 150% or more and 200% or less.
In the embodiment shown in FIG. 6, the sheet member adjacent to the soft stool holding portion 13 in the width direction Y is the skin-facing side core wrap sheet 27a. In addition, in FIG. 6, for convenience of illustration, the length L5 of the skin-facing surface side core wrap sheet 27a in the thickness direction Z and the thickness T2 of the soft stool holding portion 13 are shown to be approximately the same.

From the viewpoint of easily capturing soft stool in the soft stool holding structure 10c, the soft stool holding portion 13 in the diaper 1c preferably has the following dimensions.
The length L4 (see FIG. 5) of the soft stool holding portion 13 in the longitudinal direction _X1 is preferably 18% or more based on the length L10 (see FIG. 5) of the absorbent body ₂₄ in the same direction , more preferably 24% or more, preferably 71% or less, more preferably 56% or less, and preferably 18% or more and 71% or less, and more preferably 24% or more and 56% or less.
The length L4 (see FIG. 5) of the soft stool holding part 13 in the longitudinal direction _X1 is preferably 100 mm or more, more preferably 125 mm or more, and preferably 300 mm or less, more preferably 275 mm or less, and The length is 100 mm or more and 300 mm or less, more preferably 125 mm or more and 275 mm or less.

The length W6 of the soft stool holding portion 13 in the lateral direction _Y1 (see FIG. 5) is preferably 35% or more, based on the reference (100%) of the length W5 of the absorbent body 24 in the same direction _Y1 (see FIG. 5), It is more preferably 45% or more, more preferably 87% or less, more preferably 77% or less, and preferably 35% or more and 80% or less, and more preferably 45% or more and 70% or less. The length W5 of the absorbent body 24 in the lateral direction _Y1 is the maximum length in the same direction Y.
The length W6 (see FIG. 5) of the soft stool holding portion 13 in the lateral direction _Y1 is preferably 100 mm or more, more preferably 125 mm or more, and preferably 200 mm or less, more preferably 175 mm or less, and preferably The length is 100 mm or more and 200 mm or less, more preferably 125 mm or more and 175 mm or less.

The forming materials of each component of the diaper 1c will be explained. As the top sheet 23 and the back sheet 25, various types conventionally used in absorbent articles such as diapers can be used without particular limitation. As the top sheet 23, a hydrophilic nonwoven fabric or the like can be used. The back sheet 25 is preferably a liquid-impermeable sheet, and specifically includes a resin film, a laminate sheet of a resin film and a nonwoven fabric, and the resin film may be moisture permeable. Regarding the back sheet 25, liquid impermeability is a concept that includes both the property of not allowing any liquid to pass through it and the property of allowing a small amount of liquid to pass therethrough (poor liquid permeability). The back sheet 25 may have water repellency. A liquid-impermeable sheet is preferable as the side sheet 26b, and for example, a liquid-impermeable nonwoven fabric can be used. Liquid permeable sheets can be used as the core wrap sheets 27a, 27b, and 27c.

As the water-absorbing material contained in the absorbent body 24, any material that can be used in the absorbent body of this type of absorbent article can be used without particular limitation, and examples thereof include water-absorbing fibers 33 and water-absorbing polymers 31. One type can be used alone or two or more types can be used in combination. The water-absorbing fibers 33 may be fibers that are inherently hydrophilic or may be fibers obtained by hydrophilizing hydrophobic fibers, but the former type of fibers are particularly preferred. Preferred examples of inherently hydrophilic fibers include natural fibers, regenerated cellulose fibers, and semi-synthetic fibers, and preferred examples include pulp and rayon. Pulp includes wood pulp such as softwood kraft pulp and hardwood kraft pulp, as well as non-wood pulp such as cotton pulp and straw pulp, but is not particularly limited. Further, crosslinked cellulose fibers obtained by crosslinking cellulose fibers within and/or between molecules, and bulky cellulose fibers such as those obtained by mercerizing wood pulp may be used. As the water-absorbing polymer 31, a particulate material is generally used, but a fibrous material may also be used. The shape of the particulate water-absorbing polymer is not particularly limited, and may be, for example, spherical, lump-like, bale-like, or irregularly shaped. The water-absorbing polymer is typically mainly composed of a polymer or copolymer of acrylic acid or an alkali metal salt of acrylic acid.

An example of a method for manufacturing the diaper 1c will be described with reference to FIG. 7. First, a composite F is prepared in which the soft stool holding structure 10c is placed on the skin-facing surface of the absorber 24 (not shown in FIG. 7) on the back sheet 25. Next, the center portion 23c of the top sheet 23 is used as a portion that covers the skin-facing surface of the structure 10c for holding soft stool in the diaper 1c, and the side portions 23s sandwiching the center portion 23c are defined as the thickness of the structure 10c for holding soft stool. It is set as a portion that covers the side surface along direction Z. Two fold lines i1 and i2 extending in the longitudinal direction of the top sheet 23 are formed at positions spaced outward in the same direction Y from the side edges of the central portion 23c, that is, on each of the both side portions 23s. These fold lines i1 and i2 are spaced apart from each other in the width direction. In addition, in the state before the topsheet 23 is folded, the folding line closer to the composite F is the first folding line i1, and the folding line farther from the composite body F is the second folding line i2. Since FIG. 7 shows a cross section of the topsheet 23 along the width direction, these first and second fold lines i1 and i2 are shown as bending points of the topsheet 23. Next, each of the side portions 23s of the top sheet 23 is folded back into a trifold shape along these first and second fold lines i1 and i2 [see FIG. 7(a)]. As a result, both side portions 23s of the topsheet 23 are folded into a Z-shape in a cross-sectional view in the same width direction Y. When such a top sheet 23 is arranged so that its center portion 23c overlaps with the composite F, and the center portion 23c and the composite F are joined, the side portions 23s of the top sheet 23 are aligned with the first fold line i1. In the bent state, it hangs down along the side of the complex F [see FIG. 7(b)]. As a result, the length of the top sheet 23 in the height direction of the diaper 1c, that is, the thickness direction Z of the soft stool holding structure 10c becomes longer than the thickness of the soft stool holding part 13, and the side of the soft stool holding structure 10c becomes longer. Both surfaces can be coated more reliably. Next, the outer side of the top sheet 23 in the width direction Y from the second fold line i2 is joined to the back sheet 25. Next, side sheets 26b are placed on both sides of the composite F, and portions of the side sheets 26b extending from both side edges of the composite F are joined to the back sheet 25. In this way, diaper 1c is obtained.

Although the present invention has been described above based on its preferred embodiments, the present invention is not limited to the above-described embodiments.
For example, in the embodiments described above, the soft stool holding structures 10a, 10b, and 10c did not include a sheet that covers the surface of the soft stool holding section 13, but they may include the sheet.
Further, in the second embodiment described above, the absorbent core 24 had a two-layer structure in which the upper absorbent core 35a and the lower absorbent core 35b overlapped, but it may have a single-layer structure.

1a, 1b Soft stool removal pad 1c Diaper 6 Covering sheet 10a, 10b, 10c Soft stool holding structure 11 Holding sheet 13 Soft stool holding section 14 Laminated structure section 15 First layer 16 Second layer 23 Top sheet 24 Absorbent body 25 Back sheet Longitudinal direction Y Width direction Z Thickness direction

Claims (8)

A structure for holding soft stool, which has a soft stool holding part formed by folding a holding sheet, and has a longitudinal direction and a width direction perpendicular thereto , and an absorbent body having water absorbent fibers and a water absorbent polymer, An absorbent article, wherein the soft stool holding structure is disposed on the skin-facing side of the absorbent body,
The holding sheet is mainly composed of non-water-absorbing synthetic fibers with a fiber diameter of 25 μm or more, and the distance between the constituent fibers is 200 μm or more and 600 μm or less,
In the soft stool holding portion, the holding sheet is folded back along the longitudinal direction at two or more locations spaced apart in the width direction, thereby forming a laminated structure portion in which two or more layers of the holding sheet overlap. has been
Each of the opposing layers in the laminated structure portion is partially joined at a linear joint portion extending in the longitudinal direction,
It has a ventral part disposed on the ventral side of the wearer, a dorsal part disposed on the dorsal side of the wearer, and a crotch part located between the ventral part and the dorsal part, and It has a longitudinal direction corresponding to the direction extending from the ventral part to the dorsal part via the crotch part, and a lateral direction perpendicular to the longitudinal direction,
The soft stool holding structure is located closer to the dorsal side in the longitudinal direction than the center of the crotch,
The absorbent article has a fold line located on the dorsal side of the crotch area,
An absorbent article, wherein the soft stool holding structure is arranged so that the folding position where the holding sheet is folded back and the folding line do not overlap. The absorbent article according to claim 1, wherein the holding sheet has a thickness of 3 mm or more. The absorbent article according to claim 1 or 2, wherein in the soft stool holding section, the holding sheet has a folded portion on the same side of the holding sheet. 3. In the soft stool holding section, the holding sheet has a portion folded back on one side of the holding sheet and a portion folded back on the other side of the holding sheet. Absorbent articles . In a cross-sectional view along the width direction, the ratio of the length of the laminated structure part in the same direction to the length of the soft stool holding part in the same direction is 1/2 or more,
In the cross-sectional view, when the length of the soft stool holding part in the same direction is divided into four equal parts and divided into four areas, the joint part is formed in two areas located at the center in the same direction. The absorbent article according to any one of claims 1 to 4. The absorbent article according to any one of claims 1 to 5, comprising a liquid-permeable coating sheet that covers the surface of the soft stool holding structure. The soft stool holding portion is not joined to the covering sheet on the outer side in the width direction,
The absorbent article according to claim 6, wherein the length of the covering sheet in the height direction of the absorbent article is longer than the height of the soft stool holding section. The soft stool holding portion is not joined to adjacent sheet members in a cross-sectional view along the width direction,
The absorbent article according to any one of claims 1 to 7 , wherein the length of the sheet member in the height direction of the absorbent article is longer than the height of the soft stool holding section.

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