TW201828908A - Absorbent article - Google Patents

Abstract

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 width-direction center region of the absorption body (10) has provided therein: a recess (15) that is formed along the longitudinal direction in a non-skin-side surface; and a pair of skin-side recesses (P) that are formed along the longitudinal direction in a skin-side surface. The pair of skin-side recesses (P) are provided on either outer side, in the width direction, of the deepest part (15m) of the recess (15). The deepest part (15m) is deeper than the skin-side recesses (Pm).

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. As an example of such a sanitary napkin, Patent Document 1 discloses a sanitary napkin formed of an absorbent laminate 1. The core 8 of the absorbent laminate 1 is provided with a deformation-inducing means 14 along the longitudinal centerline 2 and a deformation-imparting means 15 formed on the skin non-contact surface 5 side. The contraction effect of the deformation imparting means 15 changes the deformation inducing means 14 into a convex shape facing the skin side, and improves the closeness to the genitals of the wearer. [Prior Art Document] [Patent Document] [0003] [Patent Document 1] Japanese Patent Laid-Open No. 11-99170

[Problems to be Solved by the Invention] 0004 [0004] However, in the absorptive layered product 1 of Patent Document 1, the portion abutting the genitals of the wearer is changed toward the skin side of the absorptive layered product 1. The convex vertex part is formed, so the installer may worry that the installer may feel against the part where the vertex part abuts. [0005] The present invention has been developed in view of the problems described above, and provides an absorbent article that can improve the skin feel of a wearer. [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 which 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 broad side direction of the absorbent body is provided with: A pair of skin-side recesses formed on the skin side along the long side direction on the non-skin side surface; and a pair of skin-side recesses formed on the skin side along the long side direction; The deepest portion is deeper than the skin-side concave portion on both outer sides of the deepest and deepest portion of the concave portion.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, by forming the recessed portions on the non-skin side, when the absorbent body is deformed to bulge toward the skin side, the area between the respective skin-side recessed portions easily abuts on the skin of the wearer. . At this time, since the area closer to the flat surface can be brought into contact with the skin of the wearer than when a pair of skin undercuts are not provided, the skin feel can be improved.

[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 includes a long-side direction, a wide-side direction, and a thickness direction that are orthogonal to each other, and includes: an absorbent body with 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 central portion in the wide side direction of the absorbent body is provided with a concave portion formed on a non-skin side surface and along the long side direction; and formed on the skin On the side, a pair of skin-side recesses along the longitudinal direction, and in the wide-side direction, the pair of skin-side recesses are provided on both outer sides of the deepest and deepest portion of the recess, the deepest portion being greater than the skin side The recess is deep. [0010] According to such an absorbent article, when the absorbent body is deformed to bulge toward the skin side by the recessed portions formed on the non-skin side surface, the area between the skin-side recessed portions easily contacts the skin of the wearer. At this time, since the area closer to the flat surface can be brought into contact with the skin of the wearer than when a pair of skin undercuts are not provided, the skin feel can be improved. [0011] In such an absorbent article, it is desirable that the fiber density of the skin-side region adjacent to the recessed portion from the skin side in the thickness direction is higher than the fiber density of the outer region adjacent to the recessed portion from the outside in the wide-side direction. [0012] According to such an absorbent article, if it is bent to bulge toward the skin side when it is installed, the excrement can be absorbed more quickly by abutting the skin side part with high fiber density at the excretory opening. [0013] In such an absorbent article, when a portion adjacent to the recessed portion from the skin side is used as the skin-side portion in the thickness direction, the liquid is provided in the position of the deepest and deepest portion of the recessed portion 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. [0014] According to such an absorbent article, when the skin of the wearer in contact with the skin part on 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 wearer can be improved. [0015] In such an absorbent article, the center of the thickness direction of the absorbent body at a position overlapping the deepest portion in the wide side direction is an outer portion adjacent to the recessed portion from the outside in the wide side direction. It is desirable that the center of the thickness direction of the absorbent body be located on the skin side in a position where the wide-side direction overlaps. [0016] According to such an absorbent article, it is easy to bend toward the skin side during installation, and it is easy to fit to the excretory port, and it is easy to absorb excrement more quickly. [0017] In such an absorbent article, it is desirable that at least a part of the pair of skin-side recessed portions and the recessed portions overlap with each other in the wide side direction. [0018] According to such an absorbent article, in a state where the recessed portion and the skin-side recessed portion overlap in the wide side direction, the region between the pair of skin-side recessed portions is likely to be a portion that contacts the skin of the wearer during the mounting, and may be Improves skin feel. [0019] In such an absorbent article, the length in the wide-side direction of the concave portion is longer than the length in the wide-side direction of each of the pair of skin-side concave portions. [0020] 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 opening, and it is easy to absorb excrement more quickly. [0021] In such an absorbent article, it is desirable that a fiber density of a portion of the absorbent body that contacts the deepest portion is higher than a fiber density of a portion that contacts the deepest portion of the skin undercut portion. [0022] According to such an absorbent article, it is easy to bend toward the skin side during installation, and it is easy to fit to the excretory port, and it is easy to absorb excrement more quickly. [0023] In such an absorbent article, a center portion between the one side end of the skin-side recessed portion on one side and the other side end of the skin-side recessed portion on the other side is provided in the wide-side direction in the wide-side direction. The aforementioned deepest part is expected. [0024] According to such an absorbent article, it is easy to bend leftward and rightwardly to swell toward the skin side, and it is easy to fit to the excretory opening, and it is easy to absorb excrement more quickly. [0025] In such an absorbent article, the concave portion is provided at least at the intercondylar portion located at the intercondylar portion when worn, and the deepest and deepest portion of the concave portion in the intercondylar portion is separated from the non-skin-side sheet. It is desirable that the depth of the deepest portion is greater than the thickness of the deepest portion to the skin side of the absorbent body. [0026] According to such an absorbent article, a linear induction portion is provided at least in the intercondylar region, and can be easily deformed to protrude toward the skin side by the recessed portion when installed, as compared with the case where the induction portion is provided only on the buttocks. By allowing the absorbent body to fit to the part corresponding to the excretory opening, the excrement can be absorbed more quickly. In addition, the depth of the deepest part is larger than the deepest part to the side of the skin of the absorber, and the deepest part is separated from the non-skin side sheet. Deformation on the skin side. [0027] In such an absorbent article, it is desirable that the skin-side portion adjacent to the recessed portion from the skin side in the thickness direction protrudes toward the skin side. [0028] According to such an absorbent article, since the user knows that the recessed portion is formed before use, the user can be recognized as a person who fits when worn. In addition, since the position of the central region where the recessed portion is formed can be recognized before use, it is easy to align the central position of the absorbent article in the center of the panties. [0029] Such an absorbent article has a skin-side sheet disposed on the skin side than the absorber in the thickness direction, and the absorbent body and the skin-side sheet are adhered with an adhesive, and the skin-side recessed portion The deepest part and the aforementioned skin side sheet are not expected to be adhered. [0030] According to such an absorbent article, since a pair of skin-side recessed portions are fixed by the skin-side sheet, it is easier to maintain the deepest portion, and the skin feel of the wearer can be improved. [0031] === 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. [0032] 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" that becomes the ventral side of the user during use of the sanitary napkin 1, and the "rear side" that becomes the back side of the user during use. 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 wearer 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. [0033] 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 laminated from the skin side in the thickness direction to the non-skin side, 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. [0034] 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 outer side in the width direction are formed as underwears for placing and fixing the sanitary napkin 1 (not shown). (Shown). [0035] 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-core 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. [0036] 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 by the 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. [0037] 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, preferably 2 mm or less, and the fiber density of the absorbent body 10 is 1.0 × 10. ⁵ ～ 4.0 × 10 ⁵ (g / m ³ ) And roughly equal. 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 ), The central part is 250 (g / m ² ), The back side is 175 (g / m ² ), The mass of the fiber per unit area 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> tb10). [0038] The thicknesses of the front, center, and rear sides 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 known. Method for measurement. For example, for each thickness, use a needle-and-disk thickness gauge ID-C1012C made by Mitutoyo Corporation or equivalent, and set the contact area to 20 cm. ² , Set the contact pressure at 3gf / cm ² The measurement is performed on the pressing target part. Others can also be compared 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, and the mass per unit area (g / m) of the target sample is measured by the above-mentioned measurement method. ² ), The thickness (m) of the target sample is measured by the above measurement method, and the mass per unit area of the target sample is divided by the thickness of the target sample to calculate (g / m ³ ). [0039] 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. [0040] The top sheet 20 is a member that comes into contact with the skin of the wearer when the sanitary napkin 1 is used, and passes liquid such as menstrual blood 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. [0041] As shown in FIG. 1, a plurality of pressing portions (a linear pressing portion EL and a main body point pressing portion ED20) are formed on the skin side of the top surface sheet 20 from the skin side, whereby the top surface sheet 20 is formed. 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. [0042] 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). [0043] 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 mounted on 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 biased relative to the body absorber 10 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. [0044] <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. 5A to 5D are diagrams illustrating the formation of the dot-shaped pressing portions ED10, ED20, and the recessed portion 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. [0046] 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. [0047] As shown in FIG. 5A, the portion forming the absorbent dot-shaped 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. [0048] 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. 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. [0050] The upper roller 51u is provided with ribs 51r that continuously protrude annularly over the entire circumference of the rotation direction. 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 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 direction) of the top surface 51rt is preferably 0.5 mm to 3.0 mm, and in this embodiment, it 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. [0051] 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 at 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. In addition, a portion P of the absorbent body 10 is in contact with a boundary portion between the outer peripheral surface of the lower roller 51d and the groove portion 51m. ₀ A skin undercut P as described later is formed. [0052] 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. [0053] 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. [0054] After the top sheet 20 is laminated, a body-like point press portion 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). [0055] After formation of the body point-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. [0056] 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. [0057] 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 use of the sanitary napkin 1] Hereinafter, the aspect of the sanitary napkin 1 during use will be described. FIG. 7 is a diagram explaining a usage aspect of the sanitary napkin 1. When the user 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 intercondyle of the wearer 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 user's crotch. Therefore, there may be concerns about discomfort, distorted parts, or leakage of excrement to the user. Therefore, as described later, it is considered that the length of the absorbent body 10 is appropriately set to about 70 mm in accordance with the wearer's body. [0059] Next, an operation is performed to pull the panties to the 201K side of the wearer's crotch. 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 of the user's interwell 201K wearing the sanitary napkin 1, as shown in state C of FIG. 7, the portion (the skin-side portion H such as FIG. 8A) induced by the recessed portion 15 and protruding toward the skin side is easy. The gap that contacts the excretory opening 201He such as the vaginal opening. This makes it easy for the wearer to feel good adhesiveness, and the absorbent body 10 can be easily absorbed without exudation of menstrual blood or the like. In addition, since it deforms according to the shape of the wearer's body, the absorbent body 10 (sanitary napkin 1) having a width longer than the width of the crotch of the wearer becomes a size suitable for the wearer's body to ensure excretion. The amount of material absorbed can make the sanitary napkin 1 fit the user's body. 8A is a schematic cross-sectional view of the recessed portion 15 in FIG. 5D, and FIG. 8B is an enlarged view of a portion Z in FIG. 8A. FIG. 9A is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 before use. FIG. 9B is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 in the installed state, and an enlarged view of a part of the recessed portion 15 in the state C in FIG. 7. 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. [0061] The recessed portion 15 is a groove formed by pressing, and is referred to as a state of the sanitary napkin 1 before use, from one side of the wide side direction of the non-skin side surface 10b of the absorbent body 10 to the skin side. The part from the beginning of bending to the part from the other side to the end of bending to the skin 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. Although the longer the 15w, the easier it is for the absorbent body 10 to bend, however, because the recessed portion 15 is formed by pressing, there is a concern that the crushed fiber will harden, and the longer the length is 15w, the less the excretion will be maintained. The volume of liquids such as substances. Therefore, in consideration of the ease of bending for protruding to the skin side and securing of the liquid absorption region of the absorbent body 10 that absorbs fecal matter, the length 15w in the width direction of the recessed portion 15 is set to 2.0 mm to 3.0 mm. As ideal. [0062] 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 overlapping the recessed portion 15 in the broader 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. At this time, the fiber density of the skin side part H is higher than the fiber density of the outer side part L. It is generally known that the higher the density of the fiber, the faster the liquid is absorbed by capillary action. This is because, in the installed state (state C in FIG. 7), if it is bent toward the skin side, it is possible to absorb excreta more quickly by having a high fiber density in the skin side part H abutting the excretory opening. A region of the skin-side part H that adjoins the deepest part 15m of the deepest part of the recessed part 15 from the skin side and overlaps with the deepest part 15m 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. [0063] 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 absorbent body 10 at the 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 wearer's thighs (feet) are biased in the direction of the wide side during the installation, the bending can be more prominently protruded toward the skin side than the deformation protruded toward the non-skin side. The excrement is absorbed near the user's excretory opening. [0064] 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 0.8mm, and the distance L1 in the thickness direction of the skin 15h to the skin side 10t of the skin side part H is set to 0.5mm, and the high-density region DH is increased by compression processing. Fiber density. [0065] In addition, the recessed portion 15 is a skin-side recessed portion P having a pair of outer sides in the wide-side direction of the high-density region DH. Each skin-side recessed portion P is provided along the skin side of the absorber 10 along the longitudinal direction, and a region (part) of the skin-side deepest portion Pm that contacts the deepest portion of the skin-side recessed portion P is referred to as a skin-side recessed portion region PH. [0066] In the absorbent body 10, the fiber density of the region (part) in contact with the deepest portion 15m of the recessed portion 15, that is, the fiber density in the high-density region DH is greater than the region of the skin-side deepest portion Pm that contacts the skin-side recessed region PH Site) has a higher fiber density. This is because first, the recessed portion 15 having the high-density region DH having a higher fiber density is bent toward the skin side, and then each of the skin-side recessed portions P having the skin-side recessed region PH having a lower fiber density is directed toward the non-skin. The lateral bends are partially induced on the outside in the broad side direction. [0067] FIG. 8B shows a state in which a virtual straight line V is indicated on the cross-section of the sanitary napkin 1 (absorbent body 10) along the broad side, and the virtual straight line V and the absorbent body 10 are connected at two points. 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. [0068] 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). At this time, the deep portion (L3) of the skin-side recessed portion P is the depth of 15m from the deepest portion of the recessed portion 15, that is, from the non-skinned side surface 10b (the absorber 10 before processing) from the skin side surface 10b of the outer portion L to the deepest The distance L2 in the thickness direction of the portion 15m is smaller (L3 <L2). Specifically, in this embodiment, the depth (L3) of the deepest part Pm on the skin side is about 0.2 mm, and the depth (L2) of the deepest part 15m is about 0.8 mm. In addition, although the depth of the skin-side concave portion P is the distance L3 between the skin-side deepest portion Pm and the imaginary straight line V, as shown in FIG. 8B, when the top sheet 20 and the skin-side deepest portion Pm are not connected, the skin-side deepest portion Pm The depth of is approximately equal to the distance between the top sheet 20 and the deepest part Pm on the skin side. [0069] Having a pair of skin-side recesses P, when the absorbent body 10 is bent with the skin-side portion H toward the skin side in the installed state shown in the state C of FIG. The area between the undercut portions P is a portion that comes into contact with the skin of the wearer (FIG. 9B). 10A is a diagram illustrating a recessed portion 150 of the sanitary napkin 100 before use. FIG. 10B is a diagram illustrating the recessed portion 150 of the sanitary napkin 100 in a mounted state. In FIGS. 10A and 10B, the same numbers and symbols as those of the sanitary napkin 1 are used for convenience of each structure. As shown in FIG. 10A, the sanitary napkin 100 does not have a pair of skin-side recesses on the skin side of the absorbent body 10. When the absorbent body 10 of the sanitary napkin 100 is formed in the recessed portion 150, it can be formed by pushing the rib portion 51r shallowly into the groove portion 51m, pushing the rib portion 51r for a short time, or changing the shape of the rib portion 51r. . In addition, when a pair of skin-side depressions P are not provided, the deepest portion 150m does not often have a predetermined length. Therefore, FIGS. 10A and 10B show a mountain-shaped depression 150 having the deepest portion 150m as a vertex. [0071] If the sanitary napkin 100 is set in the installed state in the state C of FIG. 7, the absorbent body 10 is biased toward the inner side of the wide side direction by the thigh of the wearer, so that the skin-side portion H faces the skin-side. When the absorbent body 10 is bent in a protruding manner, the density of the fiber provided at the deepest portion of 150 m in the wide side direction is the highest (high-density region DH), and it is easy to form a mountain shape with the high-density region DH as the apex (Figure 10B) . Therefore, if the sanitary napkin 100 is installed, since the high-density region DH, which is the apex, abuts on the excretory opening of the wearer, there is a concern that the wearer may feel discomfort. [0072] On the other hand, as shown in FIG. 9A and the like, the sanitary napkin 1 of this embodiment has a pair of skin-side recesses P on both outer sides in the wide-side direction of the deepest portion 15 m (high-density region DH). In the installed state of the state C shown in FIG. 7, when a force is applied toward the inner side of the wide side of the absorbent body 10, as shown in FIG. 9B, in the recessed portion 15, the high-density region DH is protruded toward the skin side. , The outer sides of the skin-side recesses P in the wide-side direction are respectively bent and induced toward the non-skin side. That is, first, the concave portion 15 that makes the groove deeper (L2) is induced to bend toward the skin, and then the skin-side concave portion P that makes the groove shallower (L3) is induced to bend toward the non-skin side in the wide side direction. . As a result, the area between the pair of skin-side recesses P is easier to secure a flat surface in the wider direction than the sanitary napkin 100 without the skin-side recesses P. Thereby, even when the sanitary napkin 1 (absorbent body 10) is changed into the installed state (state C of FIG. 7), the high-density region DH abuts in a flat shape in the part abutting on the skin of the user, so , Can make the skin feel better, can reduce the sense of discomfort when installing. [0073] In the wide side direction, in the portion adjacent to both outer sides of the high-density region DH located most on the skin side, there is a region of the skin-side region H having a lower density region DH and a higher density region than the inner side of the skin-side recess P. (Figure 9B). Therefore, in the installed state, not only the high-density area DH abuts the skin of the wearer, but also the skin-side portion H adjacent to the high-density area DH is easily abutted together, so that the skin feel can be improved. [0074] Further, each skin-side recessed portion P overlaps the broad side direction in the recessed portion 15 (FIG. 8 and FIG. 9A). Thereby, as the skin-side protruding deformation caused by the concave portion 15 is easily induced to bend the respective skin-side concave portions P toward the non-skin side, the areas between the skin-side concave portions easily become a flat surface that contacts the skin of the wearer. unit. Therefore, the touch of the skin in the installed state can be improved. [0075] The deepest part 15m is in the wide side direction, the one of the skin-side recesses P on one side (the left side in FIG. 8A), and the skin-side recesses P on the other side (the right side in FIG. 8A). The center portion between the other side ends and the width direction center portion of the recessed portion 15 are the one side end of the skin side recessed portion P on one side and the other side of the skin side recessed portion P on the other side. The central part of the ends is approximately the same position. As a result, the center of the absorbent body 10 in the wide-side direction is easily bent to the left and right in a symmetrical manner, and the wearer aligns the center of the body with the center of the sanitary napkin 1 in the wide-side direction. Fits into the excretory port of the user. [0076] 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 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. [0077] The sanitary napkin 1 has the recessed portion 15 formed in the intercondylar region in the installed state (state C in FIG. 7), and the absorbent body 10 in the intercondylar region is bent at the recessed portion 15 to allow the user to install it. The fit of the drain opening is improved. Since the absorbent body 10 is easily bent, the thickness (L1) of the skin side 10t in the high-density area DH is larger (L1) than the deepest portion 15m (L2) and the deepest portion (L2) is 15m thick (L2> L1), the deepest When the depth (L2) of the 15m part is smaller than the thickness (L1) of the skin side 10t of the deepest part 15m to the high density area DH (L2 <L1), as shown in state C of FIG. 7, The thigh (foot) is biased inward in the wide side direction, and is easily bent in the recessed portion 15. Separating the deepest portion 15m from the back sheet 30 can reduce the concern that the back sheet 30 prevents the bending deformation of the absorbent body 10. [0078] As shown in FIG. 8A and the like, the skin-side deepest portion Pm of the skin-side recessed portion P is separated from the top surface sheet 20, and the skin-side deepest portion Pm and the top surface 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 undercuts P between each other in a flat shape, which can improve the skin feel of the wearer. [0079] Furthermore, as shown in FIG. 8A and the like, the skin-side portion H protrudes toward the skin side, and the skin side surface 10t of the high-density region DH is positioned more on the skin side than the skin side surface 10t of the outer portion L. Along with this, the skin surface side of the sanitary napkin 1 is a portion corresponding to the skin side portion H protruding toward the skin side. As a result, the wearer can recognize the existence of the recessed portion 15 by the appearance and the touch of the hand before use. Therefore, it is not only known that it is a tampon that protrudes toward the skin side and is easy to fit on the excretory opening. The recess 15 in the central region of the wide side of the sanitary napkin 1 (absorbent body 10) allows the user to easily align the central position of the panties with the central position of the sanitary napkin when the user intends to use the sanitary napkin 1. [0080] When the back sheet 30 is laminated on the absorbent body 10, in order to allow the pressing force to act in the thickness direction, as shown in FIG. 8A and FIG. 9A, the width direction of the recess 15 of the sanitary napkin 1 before use The end portion 15e is continuous with the back sheet 30. 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 this sanitary napkin 1 is used, as shown in FIG. 9B, the recessed part 15 is bent so that it may protrude toward a skin side (refer the state C of FIG. 7). As described above, 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 upward toward the skin side. Therefore, the area where the back sheet 30 contacts the absorbent body 10 is increased, 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 reattached, so that the shape that is bent during use can be easily maintained. [0081] === 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. [0082] In the embodiment described above, the recessed portion 15 is formed in 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 wearer at the time of wearing, because the lower part of the intercalar area in the central area in the widthwise direction of the sanitary napkin 1 is prone to protrude toward the skin side, the absorbent body 10 (hygiene Cotton 1) can be fitted to the excretory port of the user. 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. [0083] It is not necessary to provide the skin-side recessed portion P over the entire length of the absorber 10 in the longitudinal direction. The skin-side recesses P are provided at least in the intercalations, which correspond to the position of the user's intercondyle at the time of installation, and the area between the pair of skin-side recesses P can be maintained closer to a flat surface. The improved fit of the excretory port can also improve the skin feel of the wearer. 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 buttocks of the wearer, and the area where the recessed portion 15 and the skin-side recessed portion P are provided can be appropriately changed depending on the installed state. [0084] 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, and the top surface 51rt abuts, the thickness of the absorbent body 10 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, changing the distance between the rib portion 51r of the upper roller 51u and the groove portion 51m of the lower roller 51d is not the portion where the top surface 51rt abuts, but it can also be sandwiched between the inclined surface of the rib portion 51r and the inclined surface of the groove portion 51m. The thickness of the region 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 wearer during the pressing process is hardened, so that the touch of the skin can be improved. [0085] In the embodiment described above, although the pair of skin-side recessed portions P and the recessed portions 15 overlap with each other in the widthwise direction, it is not limited to this. Each skin-side recessed portion P may be provided on the outer side of the recessed portion 15 in the widthwise direction, and any one of the skin-side recessed portion P or at least a portion of the skin-side recessed portion P may overlap the recessed portion 15 in the widthwise direction. However, by overlapping each skin-side recessed portion P and the recessed portion 15 in the wide-side direction, it is easy to make the area between the skin-side recessed portions P into a plane along the wide-side direction, and the skin feel can be improved. [0086] The deepest portion 15m is provided in the central portion between the one end of the skin-side recessed portion P on one side and the other end of the skin-side recessed portion P on the other side, but it is not limited thereto. Between each skin-side recessed part P, the deepest part 15m may be provided in any position in the width direction. However, the deepest part 15m is provided in the central part between the one side end of the skin side recessed part P on one side and the other side end of the skin side recessed part P on the other side, and the wearer's The central part easily absorbs fecal matter. [0087] Furthermore, the adhesive HMA is not adhered to the deepest portion 15m of the recessed portion 15 of the sanitary napkin 1. Although the deepest portion 15m is not attached to the back sheet 30, it is not limited to this. The adhesive HMA may adhere to the deepest part 15m, and the deepest part 15m may adhere to the back sheet 30 together. Thereby, the fear of over-protruding to the skin side is alleviated, and the touch of the skin contacting the excretory opening of the wearer can be adjusted. [0088] Similarly, the deepest part Pm adhesive agent HMA of the skin-side recessed part P of the sanitary napkin 1 is not adhered, and the deepest part Pm and the top sheet 30 are not attached, 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] Although the skin-side portion H is protruded toward the skin side in the above embodiment, the present invention is not limited to this. In the state before installation, the skin side surface 10t of the skin side part H may be sunken more toward the non-skin side than the skin side surface 10t of the outer side L. Even at this time, the absorbent body 10 is protruded toward the skin side in the recessed portion 15 so that the absorbent body 10 can be fitted to the excretory opening of the wearer.

[0090]

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

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

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

PH‧‧‧ Skin undercut area

[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. 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. A FIG. 9A is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 before use. FIG. 9B is a diagram illustrating the recessed portion 15 of the sanitary napkin 1 in the installed state. 10A is a diagram illustrating a recessed portion 150 of the sanitary napkin 100 before use. FIG. 10B is a diagram illustrating the recessed portion 150 of the sanitary napkin 100 in a mounted state. FIG. 11 shows a modification of the pair of roller portions 50.

Claims (11)

An absorbent article includes 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: 设有 is provided in a central region in the wide side direction of the absorbent body: a recessed portion formed on a non-skin side surface and along the long side direction; and formed on the skin On the side, a pair of skin-side recesses along the long side direction, in the broad side direction, the pair of skin-side recesses are provided on both outer sides of the deepest and deepest part of the recess, the deepest part is more than the skin side The recess is deep. The absorbent article according to item 1 of the patent application scope, wherein the fiber density of the skin-side portion adjacent to the recessed portion from the skin side in the thickness direction is higher than the fiber density of the outer portion adjacent to the recessed portion from the outside in the wide-side direction. high. The absorbent article according to item 1 or 2 of the scope of patent application, wherein: in the thickness direction, a part adjacent to the recessed part from the skin side is used as the skin-side part, the deepest part of the recessed part is provided in the widthwise direction. The fiber density of the liquid-absorbent fiber in the deepest position is higher than the fiber density of the part of the skin-side part adjacent to the position where the deepest part is provided. The absorbent article according to any one of claims 1 to 3 in the scope of patent application, wherein the center of the thickness direction of the absorbent body at a position where overlaps with the deepest portion in the width direction is greater than The center of the thickness direction of the absorbent body in the position where the wide-side direction and an outer portion adjacent to the recessed portion overlap from the outside in the wide-side direction is located on the skin side. The absorbent article according to any one of claims 1 to 4, wherein at least a part of the skin-side recessed portions of the pair and the recessed portions overlap in the widthwise direction. The absorbent article according to any one of claims 1 to 5, in which the length of the wide-side direction of the concave portion is longer than the length of the wide-side direction of each of the pair of skin-side concave portions. . The absorbent article according to any one of claims 1 to 6 in the scope of the patent application, wherein: 密度 in the absorbent body, the fiber density of the part contacting the deepest part is higher than that of the part contacting the deepest part of the skin undercut. Higher fiber density. The absorbent article according to any one of claims 1 to 7 in the scope of the patent application, wherein: 前述 in the broad side direction, on one side of the skin-side recess on one side, and on the skin side of the other side The deepest portion is provided in a central portion between the other side ends of the recessed portion. For example, the absorbent article according to any one of claims 1 to 8 in the scope of the patent application, wherein the aforementioned recessed portion is provided at least in the intermedullary region of the intermedullary region when installed, and The deepest deepest part is separated from the non-skin-side sheet, and the depth of the deepest part is larger than the thickness from the deepest part to the skin side of the absorbent body. In the absorbent article according to any one of claims 1 to 9 of the scope of patent application, protrudes from the skin-side portion adjacent to the concave portion from the skin side toward the skin side in the thickness direction. The absorbent article according to any one of claims 1 to 10 in the scope of the patent application, wherein: has a skin sheet arranged on the skin side than the absorber in the thickness direction, the absorber and the skin side sheet, It was adhered with an adhesive, and the deepest part of the skin-side recessed part and the skin-side sheet were not adhered.