TW201827025A - Absorbent article - Google Patents

Abstract

To provide an absorbent article that can be better fitted to an excretion orifice of a wearer. An absorbent article (1) that has: an absorption body (10) that comprises liquid-absorbent fibers and has mutually orthogonal longitudinal, width, and thickness directions; and a non-skin-side sheet (30) that is arranged further to a non-skin side, in the thickness direction, than the absorption body (10). A longitudinal-direction recess (15) is formed in a width-direction center region of the absorption body (10) on the non-skin side. The recess (15) has a one-side wall part 15L on one width-direction side and an other-side wall part 15R on the other side. The recess (15) is formed such that the one-side wall part and the other-side wall part do not exert pressing force on each other when the width-direction center region of the absorption body (10) is bent such that non-skin-side surfaces of the absorbent article (1) form a 50 degree angle.

Description

Absorbent article

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

[0002] A sanitary napkin is known as an absorbent article that absorbs fecal fluid such as menstrual blood. Patent Document 1 discloses that under the influence of lateral compression, the absorbent core 12 is bent upward along a forming line 20 provided with a longitudinal line 22 provided in the center of the absorbent core 12 to improve the body fit. As an example of such a sanitary napkin, a sanitary napkin 10 is used. [Prior Art Document] [Patent Document] [0003] [Patent Document 1] Japanese Patent Publication No. 2002-538849

[Problems to be Solved by the Invention] 0004 [0004] However, when the sanitary napkin 10 of Patent Document 1 is installed, the lower surface (non-skin surface) side of the absorbent core 12 in a state affected by the lateral compression forms an angle with each other, Generally, although it is formed at 50 degrees, at this time, if the lower (non-skin surface) sides of the absorbent core 12 are in contact with each other, it becomes an obstacle for the absorbent core 12 to bend upward, and there will be an impact on the body during installation Concerns about reduced suitability. [0005] The present invention has been developed in view of the problems described above, and provides an absorbent article that can more closely fit the excretory opening of an installer. [Means for Solving the Problem] [0006] The main invention for achieving the above-mentioned object is an absorbent article having a long-side direction, a wide-side direction, and a thickness direction that are orthogonal to each other, and has: a liquid-absorbent fiber And an absorbent article of a non-skin sheet that is disposed on the non-skin side than the absorbent body in the thickness direction, wherein a central region in the wide-side direction of the absorbent body is provided with an absorbent article; On the non-skin side, the concave portion along the long side direction, and in the wide side direction, the concave portion has one side wall portion on one side; and the other side wall portion on the other side, with the non-skin side surface of the absorbent article In a state where the central region in the wide-side direction of the absorbent body is bent at an angle of 50 degrees to each other, the recessed portion is configured such that the one side wall portion and the other side wall portion do not allow a pressing force to act on each other. status.其他 Other features of the present invention will be apparent from the description of this specification and the drawings. [Effects of the Invention] [0007] According to the present invention, in general, an absorbent article is installed in a state in which the non-skin side surfaces of the absorbent article are bent at a central region in the wide direction at an angle of about 50 degrees to each other. At this time, by forming a recessed portion where one side wall portion and the other side wall portion do not allow the pressing force to act on each other, the concern that the recessed portion hinders the deformation of the absorber protruding toward the skin side can be reduced, and the absorber can be more closely fitted to Drainer of installer.

[Mode for Carrying Out the Invention] [0009] At least the following matters can be understood from the description of this specification and the drawings. An absorbent article has a longitudinal direction, a broad direction, and a thickness direction that are orthogonal to each other, and includes: an absorbent body having liquid-absorbent fibers; and an absorbent body disposed in the thickness direction on the non-skin side than the absorbent body. The non-skin sheet absorbent article is characterized in that a recessed portion formed on the non-skin side and along the long-side direction is provided in a central region in the wide-side direction of the absorbent body, in the wide-side direction. The recessed portion has one side wall portion on one side; and the other side wall portion on the other side, and the width direction of the absorbent body is bent at a non-skin side surface of the absorbent article at an angle of 50 degrees to each other. In the state of the central region, the recessed portion is configured such that the one side wall portion and the other side wall portion are in a state where no pressing force acts on each other. [0010] According to such an absorbent article, generally, the absorbent article is installed in a state where the non-skin side surfaces of the absorbent article are bent at a central region in the wide direction at an angle of about 50 degrees to each other. In this case, by forming a recessed portion where one side wall portion and the other side wall portion do not allow the pressing force to act on each other, the concern that the recessed portion hinders the deformation of the absorbent body protruding toward the skin side can be reduced, and the absorbent body can be more fitted to the installation. Excretion. [0011] In such an absorbent article, the center of the thickness direction of the absorbent body at a position where the deepest part of the recessed part overlaps in the widthwise direction is adjacent to the recessed part from the outside in the widthwise direction. It is desirable that the center of the thickness direction of the absorbent body in the position where the outer portion overlaps in the broad side direction is located on the skin side. [0012] According to such an absorbent article, it is easy to bend toward the skin side when being installed, and it is easy to fit to the excretory port, so that excrement can be absorbed more quickly. [0013] In such an absorbent article, the deepest portion of the deepest portion is along the wide side direction, and the length of the wide side direction of the deepest portion is longer than the depth of the deepest portion. [0014] According to such an absorbent article, the non-skin side surfaces of the absorbent article are bent at an angle of 50 degrees with respect to each other, in a case where the length in the widthwise direction of the deepest portion is shorter than the depth of the deepest portion. In this case, the one side wall portion and the other side wall portion are likely to be in a state where no pressing force is applied to each other. [0015] In such an absorbent article, the deepest and deepest part of the recessed portion is the one in which the wide side direction of the absorbent body is bent along the wide side direction and the non-skin sides are at an angle of 50 degrees with each other. In the state of the central region, it is desirable that the shortest distance in the wide-side direction of the one side wall portion and the other side-wall portion is shorter than the length in the wide-side direction of the deepest portion. [0016] According to such an absorbent article, the shortest distance between the wide side direction of one side wall portion and the other side wall portion is shorter than the length in the wide side direction of the deepest portion. When the side surfaces are bent at an angle of 50 degrees from each other, the concern that one side wall portion and the other side wall portion interact with each other can also be alleviated. [0017] In such an absorbent article, the shortest distance is a distance between one side approach point of the one side wall portion and the other side approach point of the other side wall portion, and the deepest portion to the one side It is desirable that the distance in the thickness direction of the side approach point, or the distance in the thickness direction from the deepest portion to the other side approach point is shorter than the widthwise direction length of the deepest portion. [0018] According to such an absorbent article, the distance in the thickness direction from the deepest portion to the approach point on one side, or the thickness direction distance from the deepest portion to the approach point on the other side is longer than the widthwise direction of the deepest portion. In this case, the concern that one side wall portion and the other side wall portion interact with each other can be alleviated. [0019] In such an absorbent article, the deepest and deepest portion of the recessed portion is along the wide side direction, and the length of the widest direction of the deepest portion is longer than the outer portion of the wide side direction adjacent to the recessed portion from the outside. It is desirable that the thickness of the aforementioned absorbent body be long. [0020] According to such an absorbent article, compared with a case where the length in the widthwise direction of the deepest portion is shorter than the thickness of the absorbent body in the outer portion, the concern that one side wall portion and the other side wall portion interact with each other can be alleviated. [0021] In such an absorbent article, the length in the wide side direction of the deepest and deepest part of the recessed portion is twice the length of the thickness of the absorbent body in the outer portion adjacent to the recessed portion from the outside in the wide side direction. Shorter is expected. [0022] According to such an absorbent article, the longer the length in the widthwise direction of the deepest portion is, the more the fear that the one side wall portion and the other side wall portion interact with each other can be alleviated. However, if the widthwise direction of the deepest portion is greater, As the length of the recess becomes longer, the recessed portion may have a narrower range in which excreta can be absorbed and retained than the outer portion. Here, the length in the wide-side direction of the deepest portion is set to be shorter than twice the thickness of the absorber at the outer portion. While maintaining the absorption of excrement, the interaction between one side wall portion and the other side wall portion can be reduced. Concerns about stress. [0023] In such an absorbent article, when a part adjacent to the recessed part from the skin side is used as the skin-side part in the thickness direction, the liquid is provided in the position of the deepest and deepest part of the recessed part in the wide side direction. It is desirable that the fiber density of the absorbent fiber is higher than the fiber density of a portion of the skin-side portion adjacent to the position where the deepest portion is provided. [0024] According to such an absorbent article, when the skin of the installer in contact with the skin part at the deepest part contacts not only the deepest part with higher fiber density, but also the adjacent part with lower fiber density, Therefore, the skin feel of the installer can be improved. [0025] In such an absorbent article, a pair of skin-side recessed portions along the longitudinal direction is provided on the skin surface side of the absorber, and in the broad-side direction, the pair of skin-side recessed portions is provided in Both outer sides of the deepest and deepest part of the recessed part are desirably deeper than the skin-side recessed part. [0026] According to such an absorbent article, when the absorbent body is deformed so as to bulge toward the skin side by the recessed portions formed on the non-skin side surface, the area between the respective skin-side recessed portions easily contacts the skin of the installer. At this time, since the area closer to the flat surface than the case where a pair of skin undercuts are not provided can contact the skin of the installer, the skin feel can be improved. [0027] In such an absorbent article, there is a skin sheet disposed on the skin side than the absorbent body in the thickness direction, the absorbent body and the skin side sheet are bonded with an adhesive, and the deepest part of the skin side recessed part is deepest. The part with the aforementioned skin-side sheet is not adhered as expected. [0028] According to such an absorbent article, the provision of a pair of skin-side recessed portions can alleviate the concern that the skin-side sheet prevents the deformation of the deepest portion in the wide-side direction, and easily forms the deepest in the wide-side direction. Skin, it can make the skin feel better. [0029] In such an absorbent article, the absorbent body and the non-skin-side sheet are adhered with an adhesive, and the deepest and deepest part of the recessed part is not adhered, and the widthwise direction of the recessed part is not adhered. It is desirable that the non-skin-side sheet is adhered to the non-skin-side sheet, and that the adhesive is adhered to a portion of the non-skin-side sheet that is located inward of the wide-side direction than the end of the concave portion. [0030] According to such an absorbent article, since the non-skin-side sheet is not adhered to the deepest portion, the concern that the non-skin-side sheet hinders the bulging to the skin side can be alleviated. In addition, although the front concave portion using the absorbent article is not more inwardly attached to the non-skin side sheet than the end portion in the broader direction, if an absorbent article is used, the absorbent body bulges along the concave portion toward the skin side and the non-skin side. Since the flakes also bulge toward the skin side, the area of the recessed portion in contact with the non-skin flakes increases. Because the non-skin-side sheet is adhered to the non-skin-side sheet by the adhesive, the non-skin-side sheet has a portion inside the end of the recessed portion that is in contact with the recessed portion again. Therefore, it is easy to maintain the shape of the absorbent article protruding toward the skin side. [0031] In such an absorbent article, in a state where the central region in the wide-side direction of the absorbent body is bent at an angle of 50 degrees from the non-skin side surfaces to each other, the absorbent article is more bent than in the wide-side direction of the concave portion. It is not desirable that the end portion is located on the inner side and the non-skin-side sheet is adhered, and the deepest portion and the non-skin-side sheet are not adhered. [0032] According to such an absorbent article, the non-skin sides of the absorbent article are bent at a central region in the wide-side direction of the absorbent body at an angle of 50 degrees, because the non-skin sides are coated on the non-skin side. The adhesive of the sheet reattaches the inner portion of the non-skin-side sheet to the inner side of the concave portion, so that it is easier to maintain the shape of the absorbent article bulging toward the skin side. [0033] === First Embodiment === <Basic Structure of Sanitary Napkin 1> A sanitary napkin 1 (hereinafter, referred to as "sanitary napkin 1") is an example of an absorbent article according to this embodiment. ")Be explained. In the following description, the sanitary napkin as an example of an absorbent article will be described. However, the absorbent article of this embodiment also includes a so-called secretion sheet (e.g., a sanitary pad). Limited to those who use sanitary napkins. [0034] FIG. 1 is a front view of a sanitary napkin 1 viewed from the skin side in the thickness direction. FIG. 2 is a plan view of the sanitary napkin 1 viewed from the non-skin side in the thickness direction. FIG. 3 is a schematic cross-sectional view taken along a line AA in FIG. 1. In the following description, the "long-side direction" along the long-side direction of the product of the sanitary napkin 1, the "wide-side direction" orthogonal to the long-side direction along the short-side direction of the product of the sanitary napkin 1, and The "thickness direction" in which the long-side direction and the wide-side direction are orthogonal to each other. The longitudinal direction includes the "front side" serving as the ventral side of the installer and the "rear side" serving as the back side of the installer during use of the sanitary napkin 1. The thickness direction includes the "skin side" (also referred to as the "upper side") which is the side (upper side in Fig. 3) that comes into contact with the skin of the installer when the sanitary napkin 1 is installed, and the opposite thereof. "Non-skin side" (also referred to as "lower side") on the side (lower side in FIG. 3). The XX line in the figure is the center line in the broad side direction. [0035] The sanitary napkin 1 is a thin sheet-like member in a vertical shape when viewed from above, and a liquid-permeable top sheet (skin-side sheet) 20 is sequentially stacked from the skin side to the non-skin side in the thickness direction, and the liquid absorbs the liquid. An absorbent body 10 and a liquid-impermeable back sheet (non-skin-side sheet) 30 (see FIG. 3). Each of the members 20, 10, and 30 is bonded to an adhesive HMA such as a hot-melt adhesive for members adjacent to the thickness direction. In addition, the adhesive HMA is applied to all areas of the skin surface side and the non-skin surface side of the absorber 10 in an arbitrary coating pattern, and can be selected from coating patterns such as an Ω pattern, a spiral pattern, and a stripe pattern. [0036] The planar shapes of the top sheet 20 and the back sheet 30 are the same shape, and the planar size is larger than the planar size of the absorbent body 10. As shown in FIGS. 1 and 2, the outer peripheral edge portions 20 e and 30 e of the two sheets 20 and 30 are bonded to each other by bonding or welding, thereby holding the absorbent body 10 between the two sheets 20 and 30. In addition, the wings 20w and 30w extending from the substantially central portions in the longitudinal direction of the top sheet 20 and the back sheet 30 to the outside in the width direction are formed as panties for placing and fixing the sanitary napkin 1 (not (Illustrated). [0037] The absorbent body 10 includes an absorbent core 11 and an upper sheet 12 and a lower sheet 13. The absorptive core 11 is a member that absorbs and holds a liquid (excretion) such as menstrual blood. The absorbent core 11 has a cellulose-based absorbent fiber as a liquid-absorbent fiber, and a thermoplastic resin fiber, and these fibers are mixed with each other to form a vertically long shape as shown by a dotted line in FIG. 1. For example: For liquid-absorbent fibers, pulp fibers are used. For thermoplastic resin fibers, the so-called sheath is polyethylene (PE) and the core is polyethylene terephthalate (PET). Sheath and core structure of composite fibers. It is also possible to use rhenium fibers as the liquid-absorbent fibers, and it is also possible to use individual fibers of polypropylene (PP) and individual fibers of PE as the thermoplastic resin fibers. In addition, liquid-absorbent particles such as a superabsorbent polymer (so-called SAP) may be added to the liquid-absorbent fiber. [0038] The upper sheet 12 is a sheet member having substantially the same shape as the planar shape of the absorptive core 11, and is bonded with an adhesive HMA to cover the skin side surface of the absorptive core 11 (FIG. 3). As the upper sheet 12, a non-woven fabric such as a hot-air nonwoven fabric, a thin paper, and the like having excellent liquid permeability can be used. The lower sheet 13 is a sheet member having substantially the same shape as the planar shape of the absorptive core 11, and is bonded to the non-skin side surface of the absorptive core 11 by an adhesive HMA (FIG. 3). As the lower sheet 13, a soft sheet such as a nonwoven fabric such as an SMS (spunbond / meltblown / spunbond) nonwoven fabric or a thin paper can be used. [0039] FIG. 4 is a plan view of the absorbent body 10 of the sanitary napkin 1 viewed from the non-skin side in the thickness direction. FIG. 4 conveniently shows the outline of the sanitary napkin 1 with a dotted line. In order to increase the rigidity of the absorbent body 10 and improve the absorbency and diffusivity of the liquid, the absorbent body 10 is provided with a plurality of absorbent point-shaped pressing portions ED10. The planar shape of the absorbent dot-shaped pressing part ED10 is substantially circular, and although it is formed in a staggered arrangement pattern, it is not limited to this at all. The thickness of the absorbent body 10 is 3 mm or less, and preferably 2 mm or less. The fiber density of the absorbent body 10 is 1.0 × 10 ⁵ to 4.0 × 10 ⁵ (g / m ³ ), and is substantially uniform. However, the mass of the fibers per unit area of the absorbent body 10 differs from the central portion and the rear portion in the front side portion in the longitudinal direction. In this embodiment, the mass (weight) per unit area of the liquid-absorbent fiber is 175 (g / m ² ) at the front portion, 250 (g / m ² ) at the center portion, and 175 (g / m) at the rear portion. ² ) The amount of the liquid absorbent fiber in the central portion is the largest, and the thickness of the absorbent body 10 (t10) in the central portion is larger than the thickness of the absorbent body 10 in the front and rear portions (t10) (t10> tb10). [0040] The thickness of each of the front side portion, the central portion, and the rear side portion of the absorbent body 10, the mass of the fibers per unit area, and the density of the liquid-absorbent fibers (also referred to as "fiber density") can be obtained by conventional methods. Take measurements. For example, for each thickness, a pin-and-disk thickness gauge ID-C1012C manufactured by Mitutoyo Co., Ltd. or equivalent is used. The contact area is set to 20 cm ² and the contact pressure is set to 3 gf / cm ² . The measurement is performed on the target part, and other comparisons can also be made visually, or the images of the cross section of the sanitary napkin 1 cut in the longitudinal direction can be taken for comparison. In addition, the mass of the fiber per unit area is, for example, a target portion that can be cut out from the sanitary napkin 1 as a target sample, and the target sample can be measured using a direct-reading balance (eg, electronic balance HF-300 manufactured by Kensei Industries Co., Ltd.) Mass: Measure the area of the sample and calculate the mass per unit area. The density of the fiber is, for example, a target portion cut out from the sanitary napkin 1 as a target sample, the mass per unit area (g / m ² ) of the target sample is measured by the above-mentioned measurement method, and the thickness of the target sample is measured by the above-mentioned measurement method ( m), the mass per unit area of the target sample divided by the thickness of the target sample can be calculated (g / m ³ ). [0041] Furthermore, on the non-skin side surface of the absorbent body 10, a linear recessed portion 15 along the longitudinal direction is formed in a central region in the lateral direction. The recessed portion 15 includes an intercondylar site located at least in the intercondylar region during installation, and is provided in a substantially linear shape over the entire length in the longitudinal direction of the absorbent body 10. In addition, the "intercalar area" refers to an area where the installer is positioned in the intercalar area when using the sanitary napkin 1, specifically, an area in which the flap adhesive portion 40w is formed in the longitudinal direction of the sanitary napkin 1. The recessed portion 15 is induced to bend and protrude toward the skin side in the thickness direction at the time of installation. The details of the recessed portion 15 will be described later. [0042] The top sheet 20 is a member that comes into contact with the skin of the installer when the sanitary napkin 1 is used, and allows liquid such as menstrual blood to pass from the skin side in the thickness direction to the non-skin side and moves it to the absorbent body. 10. As the top sheet 20, an appropriate non-woven fabric such as a hot-air nonwoven fabric can be used as a soft sheet having liquid permeability. [0043] As shown in FIG. 1, a plurality of pressing portions (a linear pressing portion EL and a main point pressing portion ED20) are formed on the skin side of the top surface sheet 20 from the skin side. It is pressed in the thickness direction together with the absorber 10, and the joining is integrated. The linear pressing part EL is formed continuously in plural along the outer peripheral edge part of the absorbent body 10, and it has a substantially annular shape that is long in the longitudinal direction as a whole. On the other hand, the main body point-shaped pressing portion ED20 is substantially circular, and the line-shaped pressing portion EL is dispersedly formed in a slightly closed region defined on the top sheet 20. [0044] The back sheet 30 prevents the liquid absorbed through the top sheet 20 from being absorbed by the absorbent body 10 from leaking to the clothing side (non-skin side) of the undergarment when the sanitary napkin 1 is used. The back sheet 30 is a liquid-impermeable, soft sheet using an appropriate resin film such as polyethylene (PE). [0045] As shown in FIG. 2, the non-skin surface side of the back sheet 30 is provided with a bonding portion (wing portion bonding portion 40w, body bonding portion) for fixing the sanitary napkin 1 to underwear or the like during use. 40c). The fin bonding portion 40w is a pair of bonding portions forming a substantially rectangular shape on the non-skin surface side of the wing portion 30w. The main body bonding portion 40c is a portion between the pair of wing portion bonding portions 40w in the widthwise direction, and the portion where the back sheet 30 and the absorbent body 10 overlap is formed by a plurality of bands in the longitudinal direction. The area is formed by applying an appropriate adhesive HMA. When using the sanitary napkin 1, the sanitary napkin 1 is installed in the undergarment while the main body bonding portion 30c is stuck to the inside of the lower crotch (crotch portion) of the undergarment, and the position of the sanitary napkin 1 is not deviated from the body absorber 10 of the installer. shift. Similarly, the wing part adhesive part 40w is formed in the region of the wing part 30w by apply | coating an appropriate adhesive HMA to the area of a substantially rectangular shape. When using the sanitary napkin 1, the wing portion 30w (20w) is bent toward the non-skin side, and the wing piece adhering portion 40w is adhered to the outer side of the lower part of the panties to fix the sanitary napkin 1 to suppress positional deviation during use. [0046] <About Formation of Point-shaped Pressing Sections ED10, ED20, and Recesses 15> Next, formation of the point-shaped pressing sections ED10, ED20, and recesses 15 will be described. The absorbent point-shaped pressing portion ED10 and the body point-shaped pressing portion ED20 are provided by pressing from the skin side or the non-skin side toward the thickness direction, and at least the skin side or the non-skin side is dented. The recessed portion 15 is a linear pressing portion along the longitudinal direction. The recessed portion 15 is provided in a central region including a center line XX in the widthwise direction of the absorbent body 10 (sanitary napkin 1), and is substantially rectangular and has a predetermined area. The recessed portion 15 is a linear recessed portion that is recessed from the non-skin side surface provided by squeezing from the non-skin surface side of the absorber 10 in the thickness direction. [0047] FIGS. 5A to 5D are diagrams illustrating the formation of the dot-shaped pressing portions ED10, ED20, and the recessed portions 15. FIG. 5A is a schematic cross-sectional view of the portion shown by a BB arrow in FIG. 1, in which the absorbent body 10 is formed as an absorbent point-shaped pressing portion ED10 before processing. FIG. 5B is a schematic cross-sectional view of a recessed portion 15 formed in the absorbent body 10 of FIG. 5A. FIG. 5C is a schematic cross-sectional view of the top sheet 20 laminated on the absorbent body 10 of FIG. 5B. FIG. 5D is a schematic cross-sectional view of the main body point-shaped pressing part ED20 formed in the sanitary napkin 1 of FIG. 5C. In addition, the absorbent body 10 in FIG. 5A is a portion of the absorbent body 10 indicated by the arrow BB in FIG. 1, and shows that the absorbent body 10 before processing before forming the dot-shaped pressing portions ED10, ED20, and the recessed portion 15 forms the absorbent body. 5B shows the state of the point-shaped pressing portion ED10. FIG. 5B shows the state in the middle of the process of forming the recessed portion 15 in the absorbent body 10 of FIG. 5A, and FIG. The body 10 is conveniently referred to as an absorber 10. 5A, 5B, and 5C are the center lines of the absorbent body 10 in the thickness direction, and YY in FIG. 5D is the center line of the sanitary napkin 1 in the thickness direction. The center line YY is a center line in the thickness direction of the sanitary napkin 1 and also a center line in the thickness direction of the outer region L of the absorbent body 10 described later. [0048] First, an absorber dot-shaped pressing portion ED10 is formed. The absorbent body 10 before processing has a thickness t10 over its entire area. The skin-side surface of the absorbent body 10 is the skin-side surface 10t, and the non-skin-side surface is the non-skin-side surface 10b. A roll gap between a convex roller (not shown) having a plurality of protrusions and an anvil roller (not shown) having a flat surface passes through the absorbent body 10 before processing, and passes through the non-skin side of the absorbent body 10 Press processing is performed to form an absorbent point-shaped press section ED10. [0049] As shown in FIG. 5A, the portion forming the absorbent dot-like pressing portion ED10 is recessed from each of the skin side and the non-skin side, and is positioned at a substantially central portion in the thickness direction of the absorbent body 10. In addition, the thickness of the absorbent body 10 of the absorbent point-shaped press section ED10 becomes smaller than the thickness t10 by the pressing process, and the fibers are crushed to have a higher fiber density than a portion having a thickness of t10. [0050] Next, a recessed portion 15 is formed. The recessed portion 15 is formed by applying a pressing process to a central region in the widthwise direction of the absorbent body 10 (FIG. 5B). Specifically, it is formed using a pair of roller portions 50 having an upper roller 51u and a lower roller 51d that are driven and rotated in the conveying direction. [0051] FIG. 6 is a schematic enlarged view of a pair of roller portions 50. The absorbent body 10 is conveyed in a state where the long side direction is toward the conveyance direction. When the direction orthogonal to the conveyance direction is defined as the "CD direction", the broad side direction of the absorbent body 10 substantially faces the CD direction. [0052] The upper roller 51u is provided with ribs 51r that continuously protrude annularly over the entire circumference of the rotation direction, and the shape of the cross section orthogonal to the rotation direction of the ribs 51r is such that the rib width becomes more toward the rotation radius direction of the upper roller 51u The outer side becomes narrower and has a substantially isosceles ladder shape having a top surface 51rt parallel to the CD direction at the front end. At least a part of the formed recessed portion 15 where the top surface 51rt abuts becomes the deepest portion 15m described later. The length in the CD direction (wide side direction) of the top surface 51rt is preferably 0.5 mm to 3.0 mm, and this embodiment is 1.0 mm. The lower roller 51d has a shape in which a groove portion 51m that can be inserted into the rib portion 51r is continuously annularly formed on the outer peripheral surface of the groove portion 51r, and a cross-section orthogonal to the rotation direction of the groove portion 51m is continuously provided on the entire circumference of the rotation direction. It also has a narrower isosceles ladder shape having a groove width that becomes narrower toward the inner side in the rotation radius direction of the lower roller 51d, and has a bottom surface 51mb parallel to the CD direction. [0053] The recessed portion 15 is formed by pushing the rib portion 51r into the groove portion 51m so that the thickness of the absorbent body 10 in the portion in contact with the top surface 51rt becomes the thinnest and is pressed. Specifically, in a state where the non-skin side surface 10b of the absorbent body 10 faces the upper roller 51u and the skin side surface 10t of the absorbent body 10 faces the lower roller 51d side along the conveying direction between the upper and lower rollers 51u and 51d, the absorption is allowed. The body 10 passes, and as shown in FIG. 6, the rib portion 51 r is pushed toward the groove portion 51 m to form a portion located on the skin side than the skin side surface 10 t of the absorber 10 before processing. Further, a skin-side recessed portion P to be described later is formed in a portion P ₀ of the absorbent body 10 that abuts a boundary portion between the outer peripheral surface of the lower roller 51 d and the groove portion 51 m. [0054] At this time, the fiber density of a portion where the recessed portion 15 abuts the top surface 51rt and the thickness of the absorbent body 10 becomes the highest. The recessed portion 15 is different from the point-shaped pressing portions ED10 and ED20 formed by using an anvil roll, and is formed by pushing the rib portion 51r toward the groove portion 51m. Therefore, the recessed portion 15 is pressed tighter than the point-shaped pressing portions ED10 and ED20. Processing. [0055] Next, as shown in FIG. 5C, the top sheet 20 to which the adhesive HMA is applied in advance is laminated from the skin side of the absorber 10 and fixed. [0056] After the top surface sheet 20 is laminated, a body point-shaped pressing part ED20 is formed. The top sheet 20 and the absorber 10 are pressed together from above the top sheet 20 in the thickness direction to form a body point-shaped pressing portion ED. The main body point press section ED20 is the same as the absorber point press section ED10. The roller gap between the convex roller (not shown) having a plurality of protrusions and the anvil roller (not shown) having a flat surface is passed through. The absorbent body 10 on which the top sheet 20 is placed is formed by pressing from the skin side (FIG. 5D). [0057] After the formation of the body spot-shaped pressing portion ED20, a linear pressing portion EL is formed. The linear pressing part EL is a roll gap between a convex roller (not shown) having a plurality of projections corresponding to the arrangement pattern of the linear pressing part EL and an anvil roll (not shown) having a flat surface. The absorbent body 10 is subjected to a pressing process from the skin side to form a linear pressing portion EL. [0058] Thereafter, the back sheet 30 is laminated and fixed from the non-skin side of the absorbent body 10. At this time, the adhesive HMA is applied in advance over substantially the entire surface of the back sheet 30 in a predetermined coating pattern, and the back sheet 30 is laminated with a constant pressure from the non-skin surface side of the absorbent body 10. [0059] In addition, in this embodiment, although the formation of the absorbent point-shaped pressing portion ED10, the formation of the recessed portion 15, the lamination of the top sheet 20, the formation of the body point-shaped pressing portion ED20, and the linear pressing portion EL The order of formation is formed, but it is not limited to this. First, the recessed portion 15 may be formed to form the absorber dot-shaped pressing portion ED10. The recessed portion 15 may be formed after the top sheet 20 is laminated on the absorbent body 10. [About the use of the sanitary napkin 1] Hereinafter, the aspect of using the sanitary napkin 1 will be described. FIG. 7 is a diagram explaining a usage aspect of the sanitary napkin 1. When the installer installs the sanitary napkin 1, first, as shown in state A of FIG. 7, the sanitary napkin 1 in a flat state is fixed to the lower part of the panty (crotch portion). At this time, the length of the absorbent body 10 in the width direction is 70 mm, and the wing portion 30w (20w) is bent toward the non-skin side, and the wing portion bonding portion 40w is stuck to the outer side of the lower part of the panties to fix the sanitary napkin 1. The length in the widthwise direction of the cotton 1 is the same as the length in the widthwise direction of the absorbent body 10. Generally, since the width of the intercondylar space of an installer is about 30 mm, the length in the width direction of the sanitary napkin 1 (absorbent body 10) in this state A is long. Generally, the longer the length of the absorbent body 10 in the width direction, although it can absorb more excretion, but if the length of the absorbent body 10 in the width direction is too long, it is larger than the width of the installer's crotch. Therefore, there is a concern that the installer may feel uncomfortable, bend unexpectedly, or leak excreta. Therefore, as described later, it is considered that it is appropriate to set the length of the absorbent body 10 to about 70 mm according to the body of the installer. [0061] Next, an operation is performed to pull the panties to the chin 201k of the installer. At this time, as shown in state B of FIG. 7, the sanitary napkin 1 is bent to protrude toward the skin side along the recessed portion 15 of the absorbent body 10. Furthermore, in the state where the installer's 201K sanitary napkin 1 is installed, as shown in state C of FIG. 7, the portion (the skin-side portion H shown in FIG. 8A and the like) induced by the recessed portion 15 and protrudes toward the skin side is easy. The gap that contacts the excretory opening 201He such as the vaginal opening. In the state C of FIG. 7, generally, the central region in the wide-side direction of the sanitary napkin 1 (the absorbent body 10) is bent so that the non-skin side surfaces are at an angle of about 50 degrees to each other, and become closer to the body of the installer. status. Thereby, it is easy for the installer to feel good adhesion, and the excretory fluid such as menstrual blood is not exposed, and the absorbent body 10 can be easily absorbed. In addition, since it deforms according to the shape of the body of the installer, the absorbent body 10 (sanitary napkin 1) having a width longer than the width of the crotch of the installer becomes a size suitable for the body of the installer, and it can be ensured. The amount of excrement absorbed allows the sanitary napkin 1 to fit on the body of the installer. [0062] <About the structure and function of the recessed portion 15> FIG. 8A is a schematic cross-sectional view of the recessed portion 15 in FIG. 5D. FIG. 9 is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 before use, and FIG. 10 is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 in a state along the outer shape of the jig 70. The length and depth of each part in the following description can be measured by a conventional method. For example, the measurement is performed by taking an image of a cross section of the sanitary napkin 1 cut in the wide direction. [0063] The jig 70 is an angle θ70 formed by a hypothetical straight line along one side side and an hypothetical straight line along the other side side. It is a 50 degree clamp. The jig 70 is formed of a material such as metal or plastic. When the sanitary napkin 1 is bent along the side surface of the jig 70, the upper surface of the jig 70 is positioned lower than the skin-side portion H. [0064] Generally, in a state where the installer installs the sanitary napkin 1 (state C in FIG. 7), since the non-skin side surfaces of the sanitary napkin 1 are approximately 50 degrees from each other, the central region in the wide side direction is bent, so Hereinafter, the state in which the non-skin side surfaces of the sanitary napkin 1 are bent at a central region in the wide side direction at an angle of 50 degrees with each other will be described. Specifically, the non-skin side surface of the sanitary napkin 1 is brought into contact with the jig 70 in a state where the center of the sanitary napkin 1 before use and the center of the jig 70 are aligned as shown in FIG. 9. The state of the side (Figure 10). In addition, in FIG. 10, the center line XX is the center in the widthwise direction of the sanitary napkin 1 and is the center in the widthwise direction of the jig 70. [0065] The recessed portion 15 is a groove formed by pressing, and is referred to as a state of the sanitary napkin 1 before use, starting from the side of the wide side of the non-skin side surface 10b of the absorbent body 10 toward the skin side. The bent part is the part which finished bending on the skin side on the other side. The length 15w of the recessed portion 15 in the width direction is preferably 1.5 mm to 3.5 mm. In this embodiment, the length 15w is approximately 2.4 mm. The longer this 15w is, the easier it is for the absorbent body 10 to be bent. Although it is possible to alleviate the concern that the one side wall portion 15L and the other side wall portion 15R of the absorbent body 10 described later interact with each other, the recessed portion 15 is formed by pressing. Therefore, there is a concern that the crushed fiber becomes hard, and the longer the length is 15w, the lower the capacity of the liquid to maintain excrement and the like. Therefore, in order to ensure the ease of bending to protrude toward the skin side and secure the liquid absorption region of the absorbent body 10 that absorbs fecal matter, the width 15w of the recessed portion 15 in the width direction is set to 2.0 mm to 3.0 mm. As ideal. [0066] The recessed portion 15 has one side wall portion 15L on one side (the left side in FIG. 9 and the like) in the broad side direction, and has the other side wall portion 15R on the other side (the right side in FIG. 9 and the like). Specifically, the one side wall portion 15L and the other side wall portion 15R are so-called portions on the non-skin side surface 10 b of the recessed portion 15, which are located outside of the deepest portion 15 m in the width direction, respectively. [0067] In the absorbent body 10, a portion adjacent to the recessed portion 15 from the skin side in the thickness direction is referred to as a skin-side portion H, and is a portion that overlaps the recessed portion 15 in the wide-side direction (the thick sandy pattern in FIG. 8A) region). In addition, a part adjacent to the skin-side part H from the outside in the wide side direction is referred to as an outer part L, and has a part having a thickness t10 of the absorber 10 without forming the dot-shaped pressing parts ED10, 20, and the recessed part 15, and the outer part L The skin side surface 10t and the non-skin side surface 10b are almost at the same positions as the skin side surface 10t and the non-skin side surface 10b of the absorbent body 10 before processing. In this embodiment, the thickness t10 is about 1.3 mm. [0068] At this time, the fiber density of the skin-side region H is higher than the fiber density of the outer-region L. It is generally known that the higher the density of the fiber, the faster the liquid is absorbed by capillary action. Therefore, in a state where the non-skin side surfaces of the sanitary napkin 1 are folded at about 50 degrees from each other by folding the central region in the wide-edge direction, the fiber density of the skin-side portion H that is in contact with the excretory port is high, and excrement can be absorbed more quickly. A region of the skin-side part H that is adjacent to the deepest part of the deepest part of the recessed part 15 from the skin side is 15 m, and a part overlapping the deepest part 15 m in the wide side direction is referred to as a high-density region DH. The deepest portion 15m has a predetermined length (for example, about 0.8 mm) in the wide side direction (W in FIG. 8A). Therefore, the high-density region DH has a planar area along the wide side direction not only in the long side direction. [0069] The center Hc in the thickness direction of the high-density region DH is located on the skin side more than the center Lc in the thickness direction of the absorber 10 in a position where the wide side direction overlaps the outer portion L. In this embodiment, the center Lc is almost the same as the center yy in the thickness direction of the absorbent body 10 before processing. With this, even when the installer's thighs (feet) are biased in the direction of the wide side, the bending can be more protruded toward the skin side than the deformation protruded toward the non-skin side. The excrement is absorbed near the excretory opening of the installer. [0070] The depth of the deepest portion 15m, that is, the distance L2 in the thickness direction from the non-skin side surface 10b (the absorber 10 before processing) of the outer portion L to the deepest portion 15m is greater than the deepest portion 15m to the skin-side portion H ( The distance L1 in the thickness direction of the skin side 10t in the high-density region DH) is long (L2> L1). In this embodiment, the depth L2 of the deepest part 15m is set to about 0.8mm, and the distance L1 in the thickness direction from the deepest part to the skin side 10t of the skin-side part H is set to about 0.5mm, and high density is increased by compression processing. The fiber density of zone DH. [0071] As shown in FIG. 10, the sanitary napkin 1 is configured such that one side wall portion 15L and the other side wall of the absorbent body 10 are bent in a state where the non-skin side surfaces of the sanitary napkin 1 are bent at an angle of 50 degrees to each other. The state in which the portions 15R do not allow the pressing force to act on each other. "The state in which the pressing force acts on each other" refers to a state in which one side wall portion 15L is in contact with the other side wall portion 15R, and a 50-degree angle at which the sanitary napkin 1 is to be widened. There is a back sheet 30 between the other side wall portion 15R, and the non-skin side surface of the back sheet 30 in the region following the one side wall portion 15L and the non-skin side of the back sheet 30 in the region following the other side wall portion 15R are in contact with each other. The bending angle of the central region in the widthwise direction of the sanitary napkin 1 cannot be set to a state of 50 degrees or a state wider than 50 degrees. [0072] The one side wall portion 15L of the sanitary napkin 1 does not contact the other side wall portion 15R, and the non-skin side surface of the back sheet 30 in the area following the one side wall portion 15L and the area next to the other side wall portion 15R Since the non-skin side surface of the back sheet 30 is not in contact, the one side wall portion 15L and the other side wall portion 15R are not in a state where the pressing force acts on each other. Therefore, in the installed state (state C in FIG. 7), even when the non-skin side surfaces of the sanitary napkin 1 are at an angle of about 50 degrees with each other, the central region in the widthwise direction of the absorbent body 10 is reduced to reduce one side wall. The concern that the portion 15L and the other side wall portion 15R hinder the bending of the absorbent body 10 can easily change the angle of the non-skin side of the sanitary napkin 1 to about 50 degrees, and can easily make the absorbent body 10 fit the excretion of the installer. mouth. [0073] In order to make it easier for the one side wall portion 15 and the other side wall portion 15R not to interact with each other, the width W in the widthwise direction of the deepest portion 15m is longer than that of the deepest portion 15m of the recessed portion 15. The depth (L2) is further increased (W> L2). Thereby, compared with the case where the length W in the widthwise direction of the deepest portion 15m is shorter than the depth (L2) of the deepest portion 15m (W> L2), the non-skin sides of the sanitary napkin 1 are bent at an angle of 50 degrees to each other In this case, a state in which the one side wall portion 15L and the other side wall portion 15R do not exert a pressing force on each other can be easily formed, and the absorbent body 10 can be easily formed into a shape that can easily fit the body of the installer. [0074] Furthermore, the length W in the widthwise direction of the deepest portion 15 m is larger than the thickness (t10 of the absorber 10) t10 of the outer portion L, and is smaller than twice the thickness of the absorber 10 (t10 <W <t10 × 2). When the length W in the widthwise direction of the deepest portion 15m is longer than the thickness t10 of the outer portion L, the non-skin sides of the sanitary napkin 1 are folded at an angle of 50 degrees with each other, and only the widthwise edge of the deepest portion 15m The amount of length W in the direction is shorter than the thickness t10 of the absorber 10 in the outer portion than the length W of the wide side 15m in the deepest portion (t10> W), so that one side wall portion 15L and the other side wall can be made. The portion 15R is in a further distant state. Therefore, the length W in the widthwise direction of the deepest portion 15m is larger than the thickness t10 of the outer portion L (t10 <W), and the length W of the widthwise direction 15m in the deepest portion is longer than the absorber in the outside portion. The case where the thickness t10 of 10 is short (t10> W) can further alleviate the concern that the one side wall portion 15L and the other side wall portion 15R interact with each other. [0075] In general, the longer the length W in the widthwise direction of the deepest portion 15m, the more it can alleviate the concern that one side wall portion 15L and the other side wall portion 15R of the absorbent body 10 are in a state where a pressing force acts on each other. However, as the length W in the widthwise direction of the deepest portion 15 m increases, the area of the groove formed in the central area in the widthwise direction of the absorbent body 10 becomes wider, so that the area for absorbing feces decreases. In addition, since the recessed portion 15 is formed by a pressing process, the high-density region DH having a high fiber density is widened, and there is a concern that the skin texture may be reduced. Therefore, setting the length W in the widthwise direction of the deepest portion 15 m to be smaller than twice the thickness of the absorbent body 10 (W <t10 × 2) can reduce the interaction between the one side wall portion 15L and the other side wall portion 15R. Concerns about strength, while maintaining the absorption of excreta from the absorbent body 10, can reduce the concerns that the DH in the high-density region where the fiber density is high becomes too wide and the skin feel is reduced. [0076] In the sanitary napkin 1, the shortest distance L4 in the widthwise direction of the one side wall portion 15L and the other side wall portion 15R is shorter than the widthwise length W of the deepest portion 15m (L4 <W). In FIG. 10, the shortest distance L4 is a distance between one side approach point 15Lp in one side wall portion 15L and the other side approach point 15Rp in the other side wall portion 15R. Since the one side wall portion 15L and the other side wall portion 15R shown in FIG. 10 do not allow a pressing force to act on each other, the shortest distance L4 is greater than 0 (L4> 0). At this time, even if the shortest distance L4 is shorter than the widest direction length W of 15m from the deepest part (L4 <W), one side wall is folded with the non-skin sides of the sanitary napkin 1 at an angle of 50 degrees. The portion 15L and the other side wall portion 15R may inadvertently allow a pressing force to act on each other. In addition, the shortest distance L4 between the one side wall portion 15L and the other side wall portion 15R varies according to the shape of the recessed portion 15. In the sanitary napkin 1, the shortest distance L4 is closer to the skin side than the most skin-side portion of the back sheet 30. [0077] The distance in the thickness direction between the deepest portion 15m and the one-side approach point 15Lp is equal to the distance A from the deepest portion 15m to the other-side approach point 15Rp in the thickness direction. Since the distance A is shorter than the length W in the widthwise direction of the deepest portion 15m (A <W), the distance A is longer than the case where the distance A is longer than the length W in the widthwise direction of the deepest portion 15m (A> W). The one side wall portion 15L and the other side wall portion 15R can make the pressing force difficult to act on each other. In this way, even if the one side wall portion 15L and the other side wall portion 15R are closest to each other (shortest distance L4), the structure of the appropriate recessed portion 15 is selected, so that the one side wall portion 15L and the other side wall portion 15R do not interact with each other. It is possible to reduce the concern that the central region in the widthwise direction of the absorbent body 10 is prevented from bulging and deforming toward the skin side. [0078] Although the structure of the recessed portion 15 has been described above, it is not limited to such a structure. It is sufficient if the one side wall portion 15L and the other side wall portion 15R do not allow the pressing force to act. The constituent elements of the recessed portion 15 include the length W in the widthwise direction of the recessed portion 15, the length W in the widthwise direction of the deepest portion 15m, the depth L2, and the distance from the deepest portion 15m to the skin side 10t in the high-density region DH in the thickness direction. L1 and so on. As long as one or more of these constituent elements are optimized, one side wall portion 15L and the other side wall portion 15R of the recessed portion 15 do not allow a pressing force to act. [0079] In the broad side direction, in a portion adjacent to both outer sides of the high-density region DH located most on the skin side, a region having a higher density region than the skin-side recess P on the skin-side region H having a lower DH fiber density (Figure 10). Therefore, in the installed state, not only the high-density region DH abuts the skin of the installer, but also the skin-side portion H adjacent to the high-density region DH easily abuts together, so that the touch of the skin can be improved. [0080] As shown in FIG. 8A and the like, the deepest portion 15m is separated from the back sheet 30, and the deepest portion 15m and the back sheet 30 are not bonded by the adhesive HMA. Accordingly, when the absorbent body 10 is deformed to protrude toward the skin side from the deepest portion 15m of the recessed portion 15 as a starting point, the fear that the rigidity of the back sheet 30 hinders deformation can be reduced. When the back sheet 30c is laminated on the absorbent body 10, since the pressing force is applied in the thickness direction, as shown in FIGS. 8A and 9, the wide end 15e of the recess 15 of the sanitary napkin 1 before use and The back sheet 30 continues. That is, the back sheet 30 is partly sunk into the recessed portion 15. In the recessed portion 15, the end portion 15 e is next to the back sheet 30, and the end portion 15 e is located on the inner side of the wide side direction. Although the adhesive HMA is present, the deepest portion 15 m and The back sheet 30 is in a non-adhered state. When the non-skin side surfaces of the sanitary napkin 1 are bent at an angle of 50 degrees with each other, the concave portion 15 is bent to protrude toward the skin side (FIG. 10). At this time, when the sanitary napkin 1 is bent, not only the absorbent body 10 but also a part of the back sheet 30 is also bent toward the skin side. Therefore, the area where the back sheet 30 comes in contact with the absorber 10 increases, and the inner portion 15 i which is closer to the inner side than the end portion 15 e which is in contact with the back sheet 30 is newly adhered, and the shape that is bent during use can be easily maintained. [0081] Furthermore, the recessed portion 15 has a pair of skin-side recessed portions P on both outer sides in the wide-side direction of the high-density region DH. Each skin-side recessed portion P is provided on the skin side surface of the absorber 10 along the longitudinal direction. FIG. 8B shows a state where the virtual straight line V is indicated on the cross-section of the sanitary napkin 1 (absorbent body 10) along the wide side direction, and shows the state where the virtual straight line V and the absorbent body 10 are in contact with each other. The skin side depression P is a groove formed by pressing. In the state of the sanitary napkin 1 before use, one of the two points where the imaginary straight line of the skin side 10t of the absorbent body 10 contacts the absorbent body 10 is the start point of the depression. , The other is the end of the depression. The length Wp in the widthwise direction of each skin-side recessed portion P is shorter than the length 15w in the widthwise direction of the recessed portion 15. Specifically, the length Wp is preferably 0.3 mm to 1.2 mm, and in this embodiment, the length Wp is about 0.8 mm. Thereby, the absorbent body 10 is induced to bend toward the skin side by the long recessed portion 15 in the wide side direction, and the skin side recessed portion P with the shorter length in the wide side direction can be bent toward the non-skin side. Ground is induced. [0082] The depth of the skin-side recessed portion P is referred to as the distance L3 between the imaginary straight line V and the skin-side deepest portion Pm (FIG. 8B). As shown in FIG. 8A and the like, the skin-side deepest part Pm of the skin-side recessed part P is separated from the top sheet 20, and the skin-side deepest part Pm and the top sheet 20 are not bonded with the adhesive HMA. As a result, the worry that the skin-side recessed portion P is fixed by the more rigid top sheet 20 can be alleviated. Therefore, the skin-side recessed portion P can be maintained as a portion that is easily deformed, and the skin-side recessed portion P is bent toward the non-skin side. It is easy to maintain the deepest 15m (high-density area DH) between the skin-side recesses P between each other in a flat shape, which can improve the skin feel of the installer. [0083] === Other Embodiments === Above, although the embodiments of the present invention have been described, the above embodiments are intended to facilitate the understanding of the present invention and are not intended to limit the interpretation of the present invention. In addition, the present invention can be changed and improved as long as it does not depart from the gist thereof, and it goes without saying that the present invention also includes equivalents thereof. For example, there may be such a deformation as shown below. [0084] In the embodiment described above, the recessed portion 15 is formed over the entire length of the absorber 10 in the longitudinal direction, but it is not limited to this. The recess 15 is provided at least at the position corresponding to the intercalar area of the installer at the time of installation, because the lower part of the intercalar area in the central region in the widthwise direction of the sanitary napkin 1 is prone to protrude toward the skin side. 1) It can fit on the drain of the installer. However, if the sanitary napkin 1 is formed over the entire length of the absorbent body 10, the absorbent body 10 can more easily protrude toward the skin side. [0085] It is not necessary for the skin-side recessed portion P to be provided over the entire length of the absorber 10 in the longitudinal direction. The skin-side recesses P are provided at least in the intercalations at positions corresponding to the position of the intercalar space of the installer at the time of installation, so that the area between the pair of skin-side recesses P can be maintained closer to the flat surface, even for the excretory opening. Improved fit, can also improve the skin feel of the installer. In addition, behind the sanitary napkin 1, it is desirable that the shape of the absorbent body 10 can be gradually changed in accordance with the shape of the hips of the installer, and the region where the recessed portion 15 and the skin-side recessed portion P are provided can be appropriately changed depending on the installation state. [0086] In the above-mentioned embodiment, as shown in FIG. 6, although the rib portion 51r of the upper roller 51u is pushed into the groove portion 51m of the lower roller 51d, the thickness of the absorbent body 10 in which the top surface 51rt abuts is the thinnest. The part is not limited to this. FIG. 11 shows a modification of the pair of roller portions 50. As shown in FIG. 11, by changing the distance between the rib portion 51r of the upper roller 51u and the groove portion 51m of the lower roller 51d so that it is not the portion where the top surface 51rt abuts, the inclined surface of the rib portion 51r and the inclined surface of the groove portion 51m may be sandwiched. The thickness of the absorbent body 10 becomes the thinnest. This can alleviate the concern that the part that comes into contact with the skin of the installer during the pressing for hardening and hardening, can improve the skin feel. [0087] Furthermore, the adhesive HMA is not adhered to the deepest portion 15m of the recessed portion 15 of the sanitary napkin 1, and the deepest portion 15m is made without contact with the back sheet 30, but it is not limited thereto. The adhesive HMA may adhere to the deepest part 15m, and the deepest part 15m may adhere to the back sheet 30 together. Thereby, anxiety which protrudes excessively toward the skin side is alleviated, and the touch of the skin which abuts the excretory opening of a wearer can be adjusted. [0088] Similarly, the deepest portion Pm adhesive HMA of the skin-side recessed portion P of the sanitary napkin 1 is not adhered, and the deepest portion Pm is not attached to the top sheet 20, but it is not limited thereto. The adhesive HMA may be attached to the deepest portion Pm, or the deepest portion Pm may be adhered to the top sheet 20.

[0089]

1‧‧‧Sanitary Pads (Sanitary Pads)

10‧‧‧ Absorber

10t‧‧‧Skin side

10b‧‧‧Non-skin side

11‧‧‧ Absorbent core

12‧‧‧ top sheet

13‧‧‧ underside sheet

15‧‧‧ recess

15m‧‧‧ deepest

15e‧‧‧End

15i‧‧‧ inside part

15L‧‧‧One side wall

15Lp‧‧‧One side approach point

15R‧‧‧ the other side

15Rp‧‧‧The other side approach point

20‧‧‧ top sheet (skin-side sheet)

20e‧‧‧outer periphery

20w‧‧‧wing

30‧‧‧ back sheet (non-skin side sheet)

30e‧‧‧outer periphery

30w‧‧‧wing

40c‧‧‧ body attachment

40w‧‧‧wing part

50‧‧‧ pair of roller parts

51u‧‧‧up roller

51d‧‧‧Lower roller

51r‧‧‧ rib

51m‧‧‧Gully

51rt‧‧‧Top

51mb‧‧‧underside

70‧‧‧ Fixture

201K‧‧‧ 胯

201He‧‧‧ excretion

DH‧‧‧High density area

ED10‧‧‧Absorbing point press section

ED20‧‧‧Body point press

EL‧‧‧ Linear Pressing Section

H‧‧‧Skin Area

L‧‧‧ outside area

HMA‧‧‧Adhesive

P‧‧‧Skin Concavity

Pm‧‧‧The deepest part of the skin side

[0008] FIG. 1 is a front view of a sanitary napkin 1 viewed from the skin side in the thickness direction. FIG. 2 is a plan view of the sanitary napkin 1 viewed from the non-skin side in the thickness direction. FIG. 3 is a schematic cross section shown by the arrow A-A in FIG. 4 is a plan view of the absorbent body 10 of the sanitary napkin 1 as viewed from the non-skin side in the thickness direction. A FIG. 5A is a schematic cross-sectional view of the absorbent body 10 before processing in which the absorbent body dot-shaped pressing portion ED10 is formed in the portion indicated by the arrow B-B in FIG. FIG. 5B is a schematic cross-sectional view of a recessed portion 15 formed in the absorbent body 10 of FIG. 5A. FIG. 5C is a schematic cross-sectional view of the top sheet 20 laminated on the absorbent body 10 of FIG. 5B. FIG. 5D is a schematic cross-sectional view of the main body point-shaped pressing part ED20 formed in the sanitary napkin 1 of FIG. 5C. FIG. 6 is a schematic enlarged view of a pair of roller portions 50. FIG. 7 is a diagram explaining a usage aspect of the sanitary napkin 1. 8 is a schematic cross-sectional view of the recessed portion 15 in FIG. 5D. FIG. 8A is a schematic cross-sectional view of the recessed portion 15 in FIG. 5D. FIG. 8B is an enlarged view of a portion Z in FIG. 8A. FIG. 9 is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 before use. 10 is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 in a state along the outer shape of the jig 70. FIG. 11 shows a modification of the pair of roller portions 50.

Claims (12)

An absorbent article has a longitudinal direction, a wide direction, and a thickness direction that are orthogonal to each other, and includes: an absorbent body having a liquid absorbent fiber; and an absorbent body disposed in the thickness direction on the non-skin side than the absorbent body. The non-skin sheet absorbent article is characterized in that: a recessed portion formed on the non-skin side and along the long side direction is provided in a central region of the wide side direction of the absorber, in the wide side direction The recessed portion has one side wall portion on one side; and the other side wall portion on the other side, and the bending direction of the absorbent body is bent at a non-skin side surface of the absorbent article at an angle of 50 degrees with respect to the width direction of the absorbent body. In the state of the central region, constitutes the recessed portion, so that the one side wall portion and the other side wall portion are in a state in which a pressing force does not act on each other. The absorbent article according to item 1 of the patent application scope, wherein the center of the thickness direction of the absorbent at a position where 最 and the deepest part of the recessed part overlap with each other in the widthwise direction is greater than the widthwise direction from the widthwise direction. The center of the said thickness direction of the said absorber in the position where the outer side adjacent to the said recessed part overlaps in the said width direction is located on the said skin side. The absorbent article according to item 1 or 2 of the scope of patent application, wherein: 的 the deepest and deepest part of the recessed part is along the broad side direction, and the deepest part is longer in the wide side direction than the deepest part. The depth is long. The absorbent article according to any one of claims 1 to 3, wherein: 的 the deepest and deepest part of the recessed portion is bent along the direction of the wide side, and the non-skin side surfaces are bent at an angle of 50 degrees to each other In a state where the central region in the wide-side direction of the absorbent body is folded, the shortest distance between the one side wall portion and the other side wall portion in the wide-side direction is shorter than the length in the wide-side direction of the deepest portion. The absorbent article according to item 4 of the scope of patent application, wherein: the shortest distance is a distance between one side close point of the one side wall portion and the other side close point of the other side wall portion, The distance in the thickness direction from the deepest portion to the approach point on the one side, or the distance in the thickness direction from the deepest portion to the approach point on the other side is shorter than the width direction length of the deepest portion. The absorbent article according to any one of claims 1 to 5, wherein: 的 the deepest and deepest part of the recessed part is along the wide side direction, and the lengthwise ratio of the deepest part in the wide side direction is in the aforementioned area. The thickness of the absorbent body in the outer portion adjacent to the recessed portion from the outer side in the wide-side direction is long. The absorbent article according to any one of claims 1 to 6, wherein the length of the wide-side direction of the deepest and deepest part of the recessed portion is greater than that of the outer portion adjacent to the recessed portion from the outside in the broad-side direction. The length of twice the thickness of the aforementioned absorbent body is shorter. The absorbent article according to any one of claims 1 to 7 in the patent application scope, wherein: in the thickness direction, a part adjacent to the recessed part from the skin side is used as the skin-side part, the recessed part is provided in the widthwise direction The fiber density of the liquid-absorbent fiber in the deepest and deepest portion of the fiber is higher than the fiber density of the skin-side portion adjacent to the portion where the deepest portion is provided. The absorbent article according to any one of claims 1 to 8, wherein: a pair of skin-side recesses along the longitudinal direction are provided on the skin surface side of the absorbent, and The pair of skin-side recesses are provided on both outer sides of the deepest and deepest part of the recesses, and the deepest part is deeper than the skin-side recesses. The absorbent article according to item 9 of the patent application scope, wherein: has a skin sheet arranged on the skin side than the absorbent body in the thickness direction, the absorbent body and the skin side sheet are bonded with an adhesive, the aforementioned The deepest part of the skin-side recessed portion is not adhered to the skin-side sheet. The absorbent article according to any one of claims 1 to 10, wherein: 吸收 the absorbent body and the non-skin-side sheet are bonded with an adhesive, and is applied to the deepest and deepest part of the recessed portion, and the adhesive There is no adhesion, 端 an end portion in the wide-side direction of the recessed portion and the non-skin-side sheet are adhered, a portion of the non-skin-side sheet which is located inward of the wide-side direction than the end portion of the recessed portion has the adhesive Attach. The absorbent article according to item 11 of the patent application scope, wherein: is bent at a position where the non-skin side surfaces are at an angle of 50 degrees from each other, and the central region in the wide-side direction of the absorbent body is bent, A portion in which the end portion is located on the inner side in the widthwise direction is bonded to the non-skin-side sheet, and the deepest portion is not bonded to the non-skin-side sheet.