Disposable absorbent article and manufacturing method thereof

Abstract

To provide a disposable absorbent article to which a flavoring agent can be added easily and which has excellent flavoring agent sustained release property.SOLUTION: There is provided a disposable absorbent article comprising: an absorbent element 50 which has an absorber 56 which is provided in a region including a crotch part M, and a packaging sheet 58 including the absorber 56, the absorbent element having a surface formed of the packaging sheet 58; and a liquid permeable top sheet 30 which is provided so as to cover a front side of the absorbent element 50. On a surface of the absorbent element 50, recess parts 51 are provided in a dispersed state with intervals, or in a state of being continuous in a lattice state. In each of the recess parts 51, illuvium 81 of skin care powder 80 is arranged, and a flavoring agent is included in the illuvium 81.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a disposable absorbent article such as a disposable diaper or sanitary napkin, and a method for manufacturing the same. [Background technology]

[0002] BACKGROUND ART It is known that perfumes are added to disposable absorbent articles such as disposable diapers to combat odors during or after use, or to provide fragrance before use.

[0003] In odor control, it is desirable for the effect to be manifested after excretion. Examples of such devices include those that release fragrance from microcapsules (see Patent Document 1) and those that release fragrance when triggered by urination (see Patent Document 2).

[0004] On the other hand, when the purpose is to provide fragrance before use, sustained release is important. Furthermore, when applied to absorbent articles, it is also important that basic performance such as absorption ability and safety is not impaired, and that the product is simple and inexpensive to manufacture. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Special Publication No. 11-509455 [Patent Document 2] Japanese Patent Application Laid-Open No. 2013-177424 Summary of the Invention [Problem to be solved by the invention]

[0006] Therefore, a main object of the present invention is to provide a disposable absorbent article to which a fragrance can be added by a simple method and which has excellent sustained release properties of the fragrance. [Means for solving the problem]

[0007] Disposable absorbent articles that solve the above problems are as follows. <First aspect> an absorbent element having an absorbent body provided in a region including a crotch region and a wrapping paper wrapping the absorbent body, the surface of which is made of the wrapping paper; a liquid-permeable top sheet provided to have a portion covering the front side of the absorbent element; the absorbent element has recesses on its surface in a spaced apart or continuous grid pattern; The recess has an accumulation of skin care powder, and the accumulation contains a fragrance. A disposable absorbent article characterized by:

[0008] (Action and effect) This disposable absorbent article has skin care powder accumulations in recesses on the surface of the absorbent element (made of wrapping paper), and these accumulations contain a fragrance. Skin care powder accumulations are porous aggregates formed by numerous particles accumulating without the use of a binder, with many gaps and a large surface area. Therefore, if the fragrance is retained on the powder surface and in the gaps within such accumulations, the release of the fragrance is slowed and the fragrance is prolonged. Furthermore, if the skin care powder accumulations are located on the flat surface of the absorbent element, they are likely to be subjected to external forces, such as when the skin is pressed against the surface of the top sheet, which could cause the accumulations to collapse and impair their sustained release properties. In contrast, if the accumulations are located within recesses, they are less likely to be subjected to external forces, and their sustained release properties are less likely to be impaired. Furthermore, many disposable absorbent articles are sold folded so that the top sheet is hidden inside, and users begin use by unfolding the folded absorbent article. Therefore, when this type of product sales format is adopted, by placing a collection of skin care powder on the surface of the absorbent element, the fragrance is more likely to be released through the top sheet as soon as use begins, and the fragrance is less likely to be released before use begins. Furthermore, the skin care powder does not hinder the movement of excrement when it is absorbed into the absorbent body, nor does it cause problems by adhering to the skin.

[0009] <Second aspect> The amount of the skin care powder in the recess is 1 to 10 g / m 2 and The recessed portion is recessed from the surface of the absorbent element to the absorbent body. A disposable absorbent article according to a first embodiment.

[0010] (Action and effect) By having a sufficient amount of skin care powder in the recesses, it becomes easier to maintain the accumulation state of the skin care powder, and the sustained release property is less likely to be impaired. Furthermore, if the recesses are recessed from the surface of the absorbent element to the inside of the absorbent body, the recesses are particularly less likely to collapse, which is preferable.

[0011] <Third aspect> The recess is formed by compressing the absorbent element in a thickness direction so as to be recessed from the surface of the absorbent element into the absorbent body, The recess has a bottom surface and a slope that slopes upward in a direction away from the edge of the bottom surface, The depth of the bottom surface of the recess is 1 to 5 mm, The ratio of the bottom surface of the recess to the surface of the absorbent element is 5 to 25%; The proportion of the slope of the recessed portion on the surface of the absorbent element is 9 to 45%. A disposable absorbent article according to the first or second aspect.

[0012] (Action and effect) As in this embodiment, when the recesses are formed so as to recess into the absorbent body, and the depth of the recesses, the ratio of the bottom surface, and the ratio of the slope are set, it is preferable because this makes it easier for the skin care powder to accumulate and to maintain that state.

[0013] <Fourth aspect> The recesses are formed in a grid pattern over the entire front-rear direction and the entire width direction of the absorbent element, The width of the bottom surface of the recess is 1 to 10 mm, The width and front-rear dimensions of the unit frame formed by the recess are each 10 to 25 mm. A disposable absorbent article according to a third embodiment.

[0014] (Action and effect) It is preferable that the recesses formed by compressing the absorbent element in the thickness direction so as to recess from the surface to the inside of the absorbent body are formed in a lattice pattern as in this embodiment, as this makes it easier for skin care powder in particular to create an accumulated state and to maintain that state.

[0015] <Fifth aspect> the top sheet is a nonwoven fabric, The recess is provided in an area overlapping a skin contact area that contacts the wearer's skin, at least a portion of the skin care powder is not fixed to a surrounding member and is able to pass through the top sheet and move to the front side of the top sheet; the top sheet is adhered to the surface of the absorbent element via a hot melt adhesive without any other sheet therebetween; The adhesive surfaces of the top sheet and the absorbent element are bonded in a net-like pattern with non-adhesive portions scattered therebetween, The skin care powder is disposed in an area overlapping the non-adhesive portion. A disposable absorbent article according to any one of the first to fourth aspects.

[0016] (Action and effect) When the skin care powder can pass through the gaps between the fibers of the top sheet and migrate to the front side of the top sheet, as in this embodiment, it adheres to the wearer's skin and exerts its skin care effect. That is, when the skin care powder adheres to the skin, capillary action draws sweat and other liquids on the skin surface away from the wearer's skin, keeping the wearer's skin appropriately dry (smooth). In this case, if another sheet is present between the top sheet and the surface of the absorbent element, the migration of the skin care powder to the top sheet side is inhibited. Furthermore, considering ease of manufacturing, it is desirable to adhere the top sheet to the backside member with a hot melt adhesive, but this hot melt adhesive not only blocks the migration of the skin care powder to the top sheet side, but also fixes the skin care powder to the surrounding members during manufacturing. In contrast, as in the present embodiment, when there are no other sheets between the top sheet and the surface of the absorbent element, the top sheet and the absorbent element are bonded in a mesh pattern, and skin care powder is placed in the area overlapping with the non-bonded portion, the movement of the skin care powder toward the top sheet side is not hindered by the other sheets, which is preferable.

[0017] <Sixth aspect> The top sheet has a fineness of 1 to 3 dtex and a basis weight of 10 to 25 g / m 2 , a spunbond nonwoven fabric with a thickness of 0.1 to 0.5 mm, The basis weight of the hot melt adhesive on the adhesive surface between the top sheet and the absorbent element is 1 to 3 g / m 2 That is, A disposable absorbent article according to a fifth embodiment.

[0018] (Action and effect) Considering the permeability of the skin care powder described above, it is preferable that the top sheet be a relatively thin nonwoven fabric with sufficient inter-fiber spaces, as in this embodiment. In this case, it is also preferable that the basis weight of the hot melt adhesive is within the range of this embodiment, because the hot melt adhesive is less likely to feel sticky when it comes into contact with the skin on the surface of the product.

[0019] <Seventh aspect> The wrapping paper has a basis weight of 10 to 20 g / m 2 , crepe paper with a thickness of 0.05 to 0.2 mm and a crepe rate of 10 to 30%. A disposable absorbent article according to any one of the first to sixth aspects.

[0020] (Action and effect) Crepe paper has a high density and is not only impermeable to skin care powder, but also has numerous fine crepes (crepe-like wrinkles) on its surface, which has the advantage of making it easy for skin care powder to be retained on the absorbent element. Furthermore, when recesses are formed on the surface of the absorbent element by embossing, the wrapping paper is less likely to tear.

[0021] <Eighth aspect> The 50% diameter of the skin care powder is 10 to 30 μm, The basis weight of the skin care powder on the surface of the absorbent element is 0.2 to 2 g / m 2 and The skin care powder is present both inside and outside the recesses. A disposable absorbent article according to any one of the first to seventh aspects.

[0022] (Action and effect) The particle size distribution and basis weight of the skin care powder are not particularly limited, but are preferably within the ranges of the present embodiment. The 50% diameter (volume basis) of the skin care powder is based on JIS Z 8825:2013 and is obtained by measuring a suspension of the skin care powder with a laser diffraction / scattering device.

[0023] <Ninth Aspect> The skin care powder consists of starch particles only. A disposable absorbent article according to any one of the first to eighth aspects.

[0024] (Action and effect) The skin care powder may be a mixture of multiple powders, but if it is made up of only starch particles, it will tend to accumulate and the gaps between the accumulated particles will be very small, making it particularly excellent at retaining fragrance.

[0025] <Tenth Aspect> an absorbent element having an absorbent body provided in a region including a crotch region and a wrapping paper wrapping the absorbent body, the surface of which is made of the wrapping paper; A liquid-permeable top sheet provided to have a portion covering the front side of the absorbent element, forming the absorbent element having recesses on its surface in either a spaced apart pattern or a continuous grid pattern; Before attaching the top sheet, a suspension containing a fragrance, a skin care powder, and water is sprayed onto the surface of the absorbent element having the recesses, the surface of the absorbent element is dried, and the accumulation of the skin care powder and the fragrance contained therein are left in the recesses. A method for manufacturing a disposable absorbent article.

[0026] (Action and effect) Disposable absorbent articles having the aforementioned skin care powder accumulation and perfume contained therein can be manufactured in this simple manner. [Effects of the Invention]

[0027] According to the present invention, a fragrance can be added by a simple method and the fragrance is excellent in sustained release properties. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 2 is a plan view showing the inner surface of the pants-type disposable diaper in an unfolded state. [Figure 2] FIG. 2 is a plan view showing the outer surface of the pants-type disposable diaper in an unfolded state. [Figure 3] 2 is a cross-sectional view taken along line 2-2 of FIG. 1. [Figure 4] 3 is a cross-sectional view of FIG. 1 taken along line 3-3. [Figure 5] 1(a) is a cross-sectional view taken along line 4-4 in FIG. 1, and FIG. 1(b) is a cross-sectional view taken along line 5-5 in FIG. [Figure 6] FIG. 1 is a perspective view of a pants-type disposable diaper. [Figure 7] FIG. 2 is a plan view showing the outer surface of the inner body in the deployed state together with the outline of the outer body. [Figure 8] FIG. 2 is a plan view showing the surface of the absorbent body together with the outline of the wrapping paper. [Figure 9] FIG. 2 is a cross-sectional view of an absorbent element. [Figure 10] FIG. [Figure 11] FIG. 2 is an enlarged view of a main part of the surface of the absorbent element. [Figure 12] FIG. 10 is a plan view showing another example of the absorbent body. [Figure 13] FIG. 3 is a cross-sectional view showing the absorbent element in a state before the absorbent body is wrapped in wrapping paper. [Figure 14] FIG. 2 is a cross-sectional view showing the absorbent element in a state after the absorbent body has been wrapped in wrapping paper and before the compressed portion has been formed. [Figure 15] FIG. [Figure 16] This is a photo of the surface of the wrapping paper. DETAILED DESCRIPTION OF THE INVENTION

[0029] Below, a pants-type disposable diaper will be described in detail as an example of a disposable absorbent article, with reference to the accompanying drawings. Adjacent components in the thickness direction are fixed or joined as needed, in addition to the fixed or joined portions described below, in the same manner as known diapers. The dotted patterns in the cross-sectional diagram indicate adhesives such as hot melt adhesives used as the fixing or joining means. Hot melt adhesives can be applied by known methods, such as slot coating, continuous or dotted bead coating, spiral, Z-shaped, or wavy (regular or irregular) spray coating, or pattern coating (transfer of hot melt adhesive using a relief printing method). Alternatively or in addition to this, hot melt adhesive can be applied to the outer surface of the elastic member to fix the elastic member to an adjacent member. Hot melt adhesives include, for example, EVA-based, adhesive rubber-based (elastomer-based), polyolefin-based, and polyester / polyamide-based types, but no particular limitation is imposed on them. Material welding methods such as heat sealing and ultrasonic sealing can also be used to fix or join the components. In areas where liquid permeability in the thickness direction is required, adjacent components in the thickness direction are fixed or joined in an intermittent pattern. For example, when such intermittent fixing or joining is performed using a hot melt adhesive, intermittent pattern application such as a spiral, Z-shape, or wavy pattern can be suitably used. When applying to an area greater than the application width of a single nozzle, intermittent pattern application such as a spiral, Z-shape, or wavy pattern can be performed with or without gaps in the width direction. Material welding methods such as heat sealing and ultrasonic sealing can also be used to join the components.

[0030] Furthermore, as the nonwoven fabric in the following description, known nonwoven fabrics can be used as appropriate depending on the location and purpose. The constituent fibers of the nonwoven fabric can be selected without particular limitation, for example, synthetic fibers such as polyolefins (e.g., polyethylene or polypropylene), polyesters, and polyamides (including single-component fibers as well as core-sheath and other composite fibers), regenerated fibers (e.g., rayon or cupra), and natural fibers (e.g., cotton), and mixtures of these can also be used. To increase the flexibility of the nonwoven fabric, it is preferable to use crimped fibers as the constituent fibers. Furthermore, the constituent fibers of the nonwoven fabric can be hydrophilic fibers (including fibers made hydrophilic by a hydrophilizing agent), hydrophobic fibers, or water-repellent fibers (including fibers made water-repellent by a water-repellent agent). Furthermore, nonwoven fabrics are generally classified into staple fiber nonwoven fabrics, long fiber nonwoven fabrics, spunbond nonwoven fabrics, meltblown nonwoven fabrics, spunlace nonwoven fabrics, thermal bond (air-through) nonwoven fabrics, needle-punched nonwoven fabrics, point-bond nonwoven fabrics, laminated nonwoven fabrics (including SMS nonwoven fabrics and SMMS nonwoven fabrics in which a meltblown layer is sandwiched between spunbond layers), etc. depending on the fiber length, sheet formation method, fiber bonding method, and laminated structure, and any of these nonwoven fabrics can be used.

[0031] 1 to 6 show an example of a pants-type disposable diaper. This pants-type disposable diaper includes a rectangular front outer body 12F constituting a front waist-surrounding portion, a rectangular rear outer body 12B constituting a rear waist-surrounding portion, and an inner body 200 provided inside the outer bodies 12F and 12B so as to extend from the front outer body 12F through the crotch region M to the rear outer body 12B. Side seals 12A are formed by joining both sides of the front outer body 12F and both sides of the rear outer body 12B, and thus an opening formed by the front and rear ends of the outer bodies 12F and 12B serves as a waist opening WO through which the wearer's waist passes. The portions of the inner body 200 on both widthwise sides, surrounded by the lower edges of the outer bodies 12F and 12B and the side edges of the inner body 200, serve as leg openings LO through which the legs pass. The inner body 200 absorbs and retains excrement such as urine, and the outer bodies 12F and 12B support the inner body 200 against the wearer's body. Furthermore, the symbol Y indicates the total length of the diaper in the unfolded state (the length in the front-to-back direction from the edge of the waist opening WO of the front body F to the edge of the waist opening WO of the back body B), and the symbol X indicates the total width of the diaper in the unfolded state.

[0032] This pants-type disposable diaper has a waist region T defined as the front-to-back range having the side seals 12A (the front-to-back range from the waist opening WO to the top of the leg openings LO), and an intermediate region L defined as the front-to-back range of the portion forming the leg openings LO (between the front-to-back region having the side seals 12A of the front body F and the front-to-back region having the side seals 12A of the back body B). The portions of the front exterior body 12F and the rear exterior body 12B located in the waist region T, i.e., the front waist portion and the rear waist portion, can be conceptually divided into a "waist portion" W that forms the edge of the waist opening, and a "lower waist portion" U that is the portion below this. Typically, if there is a boundary within the front and rear waist-surrounding sections where the stretch stress in the width direction WD changes (e.g., where the thickness or elongation rate of the elastic member changes), the waist section W is the section closer to the waist opening WO than the boundary closest to the waist opening WO. If there is no such boundary, the waist section W is the waist extension 12E extending further toward the waist opening WO than the absorbent body 56 or inner body 200. Their front-to-rear lengths vary depending on the size of the product and can be determined as appropriate. For example, the waist section W may be 15 to 40 mm, and the lower waist section U may be 65 to 120 mm. Meanwhile, both side edges of the middle region L are constricted in a U-shape or curved shape to fit around the wearer's legs, and these are the areas into which the wearer's legs are inserted. As a result, the pants-type disposable diaper in its unfolded state has a generally hourglass shape overall.

[0033] (interior body) The inner body 200 can have any shape, but is rectangular in the illustrated example. As shown in Figures 3 to 5, the inner body 200 comprises a top sheet 30 facing the body, a liquid-impermeable sheet 11, and an absorbent element 50 interposed between them, and is the main body portion responsible for the absorption function. Reference numeral 40 denotes an intermediate sheet (second sheet) provided between the top sheet 30 and the absorbent element 50 in order to quickly transfer liquid that has permeated the top sheet 30 to the absorbent element 50, and reference numeral 60 denotes rising gathers 60 that extend from both sides of the inner body 200 so as to come into contact with the wearer's legs in order to prevent excrement from leaking out the sides of the inner body 200.

[0034] (Top sheet) The top sheet 30 has a skin-contacting region that is exposed on the surface of the article in the unfolded state and comes into contact with the wearer's skin. For example, in the illustrated example, the portion of the top sheet 30 that is covered by the rising gathers 60 in the unfolded state is not the skin-contacting region, but the region located between the rising gathers 60 is the skin-contacting region.

[0035] The top sheet 30 is liquid permeable, and examples thereof include a perforated or non-perforated nonwoven fabric and a perforated plastic sheet. The top sheet 30 may consist of a single sheet, or a laminated sheet obtained by bonding two or more sheets together. Similarly, the top sheet 30 may consist of a single sheet, or two or more sheets in the planar direction.

[0036] The side edges of the top sheet 30 may be folded back at the side edges of the absorbent element 50, or may be left unfolded and extend beyond the side edges of the absorbent element 50.

[0037] The top sheet 30 is preferably fixed to an adjacent backside member by a material welding joining means such as heat sealing or ultrasonic sealing, or by a hot melt adhesive, in order to prevent misalignment relative to the backside member. In the illustrated example, the top sheet 30 is fixed to the surface of the intermediate sheet 40 and the surface of the portion of the wrapping paper 58 that is located on the front side of the absorbent body 56 by a hot melt adhesive applied to the backside of the top sheet 30.

[0038] (middle seat) In order to quickly transfer liquid that has permeated the top sheet 30 to the absorbent body, an intermediate sheet (also called a "second sheet") that has a faster liquid permeation rate than the top sheet 30 can be provided. This intermediate sheet is intended to quickly transfer liquid to the absorbent body, improving the absorption performance of the absorbent body and preventing the phenomenon of absorbed liquid "backflowing" from the absorbent body. The intermediate sheet can also be omitted.

[0039] Examples of intermediate sheets include the same materials as the top sheet 30, spunlace nonwoven fabric, spunbond nonwoven fabric, SMS nonwoven fabric, pulp nonwoven fabric, mixed sheet of pulp and rayon, point-bond nonwoven fabric, and crepe paper. Air-through nonwoven fabric is particularly preferred because of its bulkiness. For air-through nonwoven fabric, composite fibers with a core-sheath structure are preferably used, and in this case, the resin used for the core may be polypropylene (PP), but polyester (PET) with high rigidity is preferred. The basis weight is 17 to 80 g / m 2 is preferable, and 25 to 60 g / m 2 The thickness of the raw material fibers of the nonwoven fabric is preferably 2.0 to 10 dtex. In order to make the nonwoven fabric bulky, it is also preferable to use eccentric fibers, hollow fibers, or eccentric and hollow fibers as all or part of the raw material fibers.

[0040] The intermediate sheet is positioned in the center and is shorter than the width of the absorbent body 56, but it may be provided across the entire width. The length of the intermediate sheet in the front-to-rear direction may be the same as the entire length of the diaper, the same as the length of the absorbent element 50, or within a short length range centered on the liquid-receiving region.

[0041] The intermediate sheet is preferably fixed to the adjacent backside member by a joining means such as heat sealing or ultrasonic sealing, or by a hot melt adhesive, in order to prevent misalignment relative to the backside member. In the illustrated example, the intermediate sheet is fixed to the surface of the portion of the wrapping paper 58 that is located on the front side of the absorbent body 56 by a hot melt adhesive applied to the backside of the intermediate sheet.

[0042] (Liquid-impermeable sheet) The material of the liquid-impermeable sheet 11 is not particularly limited, but examples thereof include a plastic film made of a polyolefin resin such as polyethylene or polypropylene, a laminated nonwoven fabric in which a plastic film is provided on the surface of a nonwoven fabric, and a laminated sheet in which a nonwoven fabric or the like is overlaid and bonded to a plastic film. A liquid-impermeable and moisture-permeable material, which is preferred from the viewpoint of preventing stuffiness, is preferably used for the liquid-impermeable sheet 11. A widely used moisture-permeable plastic film is a microporous plastic film obtained by kneading an inorganic filler into a polyolefin resin such as polyethylene or polypropylene, forming the sheet, and then stretching the sheet in a uniaxial or biaxial direction. In addition, nonwoven fabrics using microdenier fibers, nonwoven fabrics whose leak-proofing properties have been enhanced by reducing the voids in the fibers through the application of heat or pressure, and sheets that have been made liquid-impermeable without using a plastic film by coating with a highly absorbent resin or a hydrophobic resin or a water-repellent agent can also be used as the liquid-impermeable sheet 11, but it is preferable to use a resin film in order to obtain sufficient adhesive strength when bonding with the cover nonwoven fabric 13 described below via a hot melt adhesive.

[0043] The liquid-impermeable sheet 11 is made to have a width that fits behind the absorbent element 50 as shown in the figure, and in order to improve leakproofness, it can also be made to wrap around both sides of the absorbent element 50 and extend to both sides of the absorbent element 50 on the side of the top sheet 30. The width of this extension is preferably about 5 to 20 mm on each side.

[0044] (Absorption element) The absorbent element 50 has an absorbent body 56 and a wrapping paper 58 that wraps the entire absorbent body 56 .

[0045] (absorbent) The absorbent body 56 is a mixture of pulp fibers and highly absorbent polymer particles. The fiber weight is, for example, 100 to 450 g / m 2 It can be about.

[0046] The term "superabsorbent polymer particles" includes not only "particles" but also "powder." The superabsorbent polymer particles used in this type of disposable diaper can be used as is. For example, when sieved using a 500 μm standard sieve (JIS Z8801-1:2006) (shaking for 5 minutes), the percentage of particles remaining on the sieve is preferably 30% by weight or less. Furthermore, when sieved using a 180 μm standard sieve (JIS Z8801-1:2006) (shaking for 5 minutes), the percentage of particles remaining on the sieve is preferably 60% by weight or more.

[0047] The material of the superabsorbent polymer particles is not particularly limited, but a water absorption capacity of 40 g / g or more is preferred. Examples of superabsorbent polymer particles include starch-based, cellulose-based, and synthetic polymer-based materials, such as starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, crosslinked products of sodium carboxymethylcellulose, and acrylic acid (salt) polymers. The shape of the superabsorbent polymer particles is preferably the commonly used powder-like form, but other shapes can also be used.

[0048] The highly absorbent polymer particles preferably have a water absorption rate of 70 seconds or less, particularly 40 seconds or less. If the water absorption rate is too slow, the liquid supplied into the absorbent body 56 tends to flow back out of the absorbent body 56, which is known as backflow.

[0049] Furthermore, the highly absorbent polymer particles preferably have a gel strength of at least 1000 Pa. This effectively prevents the sticky feeling after absorbing liquid, even when the absorbent body 56 is bulky.

[0050] The basis weight of the highly absorbent polymer particles can be determined appropriately depending on the absorption amount required for the application of the absorbent body 56. Therefore, although it cannot be generalized, it is generally in the range of 50 to 350 g / m 2 The polymer weight can be 50 g / m 2 If it is less than 350g / m, it will be difficult to ensure sufficient absorption. 2Above this, the effect saturates.

[0051] There are no particular limitations on the ratio of fibers to superabsorbent polymer particles in the absorbent body 56, but a weight ratio of fibers to superabsorbent polymer particles of 50:50 to 20:80 can result in a thinner absorbent body 56 when compared for the same area and the same absorption capacity. In this case, there are no particular limitations on the thickness 56t of the absorbent body 56, but it can be 3 to 15 mm.

[0052] The absorbent body 56 may be provided in a region including the crotch region M, but in normal products, it is preferable that it extend to both the front and rear of the crotch region M. In the case of a pants-type disposable diaper such as this example, it is preferable that the absorbent body 56 extend to or near the peripheral edge of the inner body 200 in both the front-to-rear direction LD and the width direction WD. The symbol 56X indicates the overall width of the absorbent body 56.

[0053] To ensure a sufficient absorption capacity in the crotch region M, it is preferable that the absorber 56 has a substantially rectangular shape as shown in the example of Fig. 8. Furthermore, to improve the fit in the crotch region M, it is also possible to make the width of the absorber 56 in the crotch region M narrower than the front and rear sides, giving it a constricted shape, as shown in the example of Fig. 12(a). In this case, to ensure a sufficient absorption capacity in the crotch region M, it is preferable that the width n1 of the narrowest part of the absorber 56 in the crotch region M be 0.85 times or more the overall width 56X of the absorber 56.

[0054] Note that, when the absorber 56 has a constricted portion 56n described below, the crotch region M refers to the range in the front-to-back direction LD including this constricted portion 56n; when the absorber 56 does not have a constricted portion 56n but has a constricted outer shape in the unfolded state as in the illustrated example, the crotch region M refers to the range in the front-to-back direction LD including the constricted portion of this outer shape (in the illustrated example, between the front exterior body 12F and the rear exterior body 12B); and when there are no constricted portions, the crotch region M refers to the portion located in the center in the front-to-back direction LD whose dimension in the front-to-back direction LD is 20 to 30% of the total length of the product. The portions extending forward and backward from the crotch region M, respectively, are the front portion and the rear portion.

[0055] (Low basis weight part) The absorbent body 56 may be continuous and of approximately the same thickness throughout, or, as shown in the illustrated example, may have elongated low basis weight sections 56L extending in the front-to-back direction LD. The low basis weight sections 56L refer to areas with a low basis weight and do not include areas that are merely compressed in the thickness direction but have no change in basis weight, such as the recesses 51 described below. The low basis weight sections 56L may be slits penetrating the thickness direction, but are preferably recesses with a low accumulation of pulp fibers and superabsorbent polymer particles, as shown in the illustrated example, because this facilitates ensuring sufficient absorption. The recesses may be formed on either the front or back surface of the absorbent body 56. Providing such low basis weight sections 56L in the absorbent body 56 encourages bending of the absorbent body 56 along the low basis weight sections 56L, improving the fit of the absorbent element 50 in the crotch region M. The total basis weight of the pulp fibers and superabsorbent polymer particles in the low basis weight portion 56L may be less than the total basis weight of the pulp fibers and superabsorbent polymer particles in the portions other than the low basis weight portion 56L, and may be, for example, 0.1 to 0.5 times the total basis weight of the pulp fibers and superabsorbent polymer particles in the portions other than the low basis weight portion 56L.

[0056] As long as the low basis weight portion 56L is elongated in the front-to-rear direction LD, it may extend linearly along the front-to-rear direction LD, or it may be curved so that it is positioned laterally as it approaches both sides in the front-to-rear direction LD, as in the illustrated example. The front and rear ends of the low basis weight portion 56L may have any suitable shape. For example, it may be linear as in the example shown in FIG. 12(a), or it may be curved (e.g., semicircular) as in the example shown in FIG. 8, or it may have rounded corners at both ends and a linear intermediate portion (not shown). The width m1 of the low basis weight portion 56L may be determined as appropriate, and may be 0.04 to 0.1 times the width n1 (meaning the overall width 56X in the case of a rectangle) of the narrowest portion of the crotch region M of the absorbent body 56. The width m1 of the low basis weight portion 56L may be constant or variable along its length. The dimensions and arrangement of the low basis weight portion 56L in the front-to-rear direction LD may be determined as appropriate. For example, the dimension m2 of the low basis weight portion 56L in the front-to-back direction LD can be 50 to 120%, and more preferably 50 to 80%, of the dimension of the crotch region M in the front-to-back direction LD. The low basis weight portion 56L may be contained within the crotch region M, or may extend to the front, back, or both the front and back of the crotch region M.

[0057] The low basis weight portions 56L may be provided, for example, on both sides of the crotch region M in the width direction WD and at the center of the width direction WD, as in the examples shown in Figures 8 and 12(a), or only one on each side of the crotch region M in the width direction WD, as in the example shown in Figure 12(b).In addition, although not shown, only one may be provided at the center of the crotch region M in the width direction WD.

[0058] (recess) The surface of the absorbent element 50 is provided with recesses 51 in a continuous grid pattern as shown in FIGS. 3, 4, and 9 to 11, or in a scattered pattern with gaps as shown in FIG.

[0059] The recesses 51 are preferably provided at positions overlapping the skin contact region. In this case, the recesses 51 may be formed over the entire absorbent element 50 in the front-to-rear direction LD and the entire absorbent element 50 in the width direction WD as in the example shown in Fig. 10, or may be provided only in a partial region, such as on both the front and rear sides of the crotch region M or on either one side as in the example shown in Fig. 15.

[0060] The shape and dimensions of the recess 51 can be determined as appropriate. However, from the perspective of facilitating the accumulation of the skin care powder 80 (described later) and maintaining that accumulation, as shown in FIG. 9, the recess 51 preferably has a bottom surface 51d and a slope 51s that slopes upward away from the edge of the bottom surface 51d. The slope 51s preferably gradually becomes gentler as it moves away from the edge of the bottom surface 51d, as shown in the illustrated example, but the slope may also be constant. The depth 51h of the recess 51 is preferably 1 to 5 mm, and more preferably 2 to 5 mm. Furthermore, the ratio of the bottom surface of the recess 51 to the surface of the absorbent element 50 is preferably 5 to 25%, and the ratio of the slope 51s of the recess 51 to the surface of the absorbent element 50 is preferably 9 to 45%. The dimension of the narrowest portion of the recess 51 is preferably 1 to 10 mm, and more preferably 1 to 5 mm. When the recesses 51 are formed in a pattern in which they are spaced apart, the area of ​​the bottom surface of the recesses 51 can be determined appropriately, but is, for example, 5 to 15 mm 2 The shape of the bottom of the recess 51 may be one or more types selected from appropriate shapes such as a circle, an ellipse, a polygon, a rectangle, a rounded rectangle (two parallel lines of equal length and two semicircles), etc. The pattern in which the recesses 51 are scattered at intervals includes not only regular patterns such as a staggered pattern, a matrix pattern, and a lattice pattern (see FIG. 15), but also irregular patterns.

[0061] The recesses 51 preferably extend from the surface of the absorbent element 50 into the absorbent body 56, but may be provided only in the wrapper paper 58 without forming recesses in the absorbent body 56. Recesses 51 extending from the surface of the absorbent element 50 into the absorbent body 56 can be formed by compressing the absorbent element in the thickness direction, for example, using an embossing process with or without heat. In particular, forming the recesses 51 in a continuous grid-like pattern using such a process, and setting the dimension 51x of the unit frame 51f comprising the recesses 51 in the width direction WD to approximately 10 to 25 mm and the dimension 51y of the unit frame 51f in the front-to-back direction LD to approximately 10 to 25 mm, is preferred because it facilitates the accumulation and maintenance of an accumulated state, particularly for skin care powder. Furthermore, in this case, the pulp fibers and superabsorbent polymer particles constituting the absorbent body 56 are confined within the unit frame 51f comprising the recesses 51 (see FIG. 11), thereby preventing the absorbent body 56 from sagging or cracking. In particular, when the absorbent body 56 has the aforementioned low basis weight portion 56L, kinks and cracks are likely to occur in the portions of the absorbent body 56 that are located to the sides of the low basis weight portion 56L. However, this can be effectively prevented by providing the recesses 51 in a continuous grid pattern over at least the entire region SR (see FIG. 8) that is to the sides of the low basis weight portion 56L.

[0062] When recesses 51 are provided in a grid pattern, the width 51w of the groove-shaped recesses 51 (the width of the bottom of the recess formed in the absorbent element 50) can be determined as appropriate, but in general, it is preferably about 1 to 10 mm, particularly 1 to 5 mm, and more preferably 1 to 3 mm.

[0063] When the recesses 51 are formed by compression, the thickness 51t of the recesses 51 can be determined as appropriate, but in general, it is preferable that the thickness 51t be 15 to 35% of the maximum value of the thickness 50t of the absorbent element 50.

[0064] The shape of the unit frame 51f is not particularly limited, and may be a substantially square shape as shown in the example, a substantially rhombic shape (excluding a square), a substantially rectangular shape, or the like. , omitted It may be a triangle or other polygonal shape. Furthermore, as long as the recesses 51 are arranged in a lattice pattern, the recesses 51 may include unit frames 51f of different shapes.

[0065] 10 and 11, one preferred pattern of the lattice-shaped recesses 51 is a diagonal lattice pattern made up of first portions 51a extending in a direction inclined at 40 to 50 degrees clockwise with respect to the front-rear direction LD in plan view and second portions 51b extending in a direction inclined at 40 to 50 degrees counterclockwise with respect to the front-rear direction LD in plan view. In this case, the shape of the unit frame 51f is approximately rhombic.

[0066] The dimensions of the unit frame 51f can be determined as appropriate, but preferably the dimensions are such that three or more unit frame rows 51L, in which complete unit frames 51f are repeated in the front-to-back direction LD, are provided in the width direction WD. In particular, when a low basis weight section 56L is provided, the dimensions of the unit frame 51f are preferably such that two or more unit frame rows 51L, in which complete unit frames 51f are repeated in the front-to-back direction LD, are provided in the width direction WD in at least a portion to the side of the low basis weight section 56L. This results in excellent fit and shape retention of the absorbent element 50 in the portion to the side of the low basis weight section 56L.

[0067] (wrapping paper) The wrapping paper 58 is not particularly limited, but may have a basis weight of 10 to 20 g / m 2 For example, crepe paper having a thickness of about 0.05 to 0.2 mm can be suitably used.

[0068] The packaging structure of the wrapping paper 58 can be determined as appropriate, but from the standpoint of ease of manufacturing and preventing leakage of superabsorbent polymer particles from the front and rear edges, it is preferable to wrap it around the front, back, and both side surfaces of the absorbent body 56 in a cylindrical shape, with the front and rear edges extending beyond the front and rear of the absorbent body 56, and to join the overlapping parts of the wrapped paper and the overlapping parts of the extending front and rear edges using a joining means such as a hot melt adhesive or material welding.

[0069] The shape retention of the absorbent element 50 due to the grid-like recesses 51 formed by compression depends on the retention of the recesses 51 themselves, which in turn depends on the bond strength between the wrapper paper 58 and the absorbent body 56 at the recesses 51 and the shape retention of the absorbent body 56 itself. When the wrapper paper 58 and the absorbent body 56 are bonded with hot melt adhesives HM1 and HM2 (see Figures 13 and 14), the increase in surface area due to the formation of the recesses 51 requires more hot melt adhesive HM1 and HM2 than usual to sufficiently maintain the bond strength between the wrapper paper 58 and the absorbent body 56 and the shape retention of the absorbent body 56 itself. Therefore, the surface of the absorbent body 56 on the side having the depressions of the recesses 51 and the inner surface of the wrapper paper 58 should be coated with a coating weight of 5.0 to 20.0 g / m 2 , especially 7.5 to 15.0 g / m 2 It is preferable that the adhesive is bonded via the hot melt adhesives HM1 and HM2.

[0070] For example, as in the illustrated example, when a depression due to the recess 51 is formed on the surface of the absorbent body 56, the above-mentioned amount of hot melt adhesive HM can be achieved by providing two layers of hot melt adhesive HM1, HM2 on both sides in the width direction WD of the surface of the absorbent body 56, over a width including at least the entire region SR lateral to the low basis weight portion 56L. As shown in Fig. 13, this structure is achieved by applying a first hot melt adhesive HM1 to almost the entire inner surface of an unfolded wrapping paper 58 on the surface facing the absorbent body 56, and then arranging the absorbent body 56, with the low basis weight portion 56L pre-formed, in the middle part of the first hot melt adhesive HM1 in the width direction WD of this wrapping paper 58, and bonding the back surface of the absorbent body 56 and the wrapping paper 58 via the first hot melt adhesive HM1. Next, a second hot melt adhesive HM2 is applied over almost the entire surface of the absorbent body 56, and then applying the second hot melt adhesive HM2 as shown in Fig. 14. As shown, the portions of the wrapping paper 58 that extend out on both sides of the absorbent body 56 are folded back onto the surface of the absorbent body 56, and the surface of the absorbent body 56 and the folded-back portions of the wrapping paper 58 are bonded together using a first hot melt adhesive HM1 and a second hot melt adhesive HM2, and the overlapping portions of the wrapping paper 58 are bonded together using the first hot melt adhesive HM1, and then the recesses 51 are formed by embossing as shown in Figure 9 (hot melt adhesives HM1 and HM2 are not shown).

[0071] (Skin care powder accumulation) As shown in Figures 3, 4, and 9, accumulations 81 of skin care powder 80 are contained within the recesses 51 on the surface of the absorbent element 50, and these accumulations 81 contain a fragrance. For ease of viewing, the skin care powder is exaggerated in size in the figures. The skin care powder accumulations 81 are porous aggregates formed by numerous particles of skin care powder 80 accumulated without a binder, and have many gaps and a large surface area. Therefore, if the fragrance is retained on the powder surface and in the gaps within such accumulations 81, the release of the fragrance is slowed and the fragrance is prolonged. Furthermore, if the accumulations 81 of skin care powder 80 are present on the flat surface of the absorbent element 50, the accumulations 81 are likely to be subjected to external forces, such as when the skin is pressed against the surface of the top sheet 30, which could cause the accumulations 81 to collapse and impair their sustained release properties. In contrast, if the accumulation 81 is disposed within the recess 51, external force is less likely to be applied to the accumulation 81 within the recess 51, and the sustained-release properties are less likely to be impaired. Furthermore, many disposable diapers are sold in a folded state with the top sheet 30 hidden inside, and the user begins use by unfolding the folded disposable diaper. Therefore, when this type of product sales format is adopted, by disposing the accumulation 81 of skin care powder 80 on the surface of the absorbent element 50, the fragrance is more likely to be released through the top sheet 30 upon the start of use, and the fragrance is less likely to be released before the start of use. Furthermore, the skin care powder 80 does not hinder the movement of excrement when it is absorbed into the absorber 56, nor does it cause problems by adhering to the skin.

[0072] Any known powder, such as baby powder, body powder, or face powder, can be used as the skin care powder 80. The composition of the skin care powder 80 is not particularly limited, but a preferred composition is one containing 80% by weight or more of one or more powder components selected from the group consisting of talc, starch (potato starch, cornstarch, sweet potato starch, tapioca starch, sago starch, rice starch, amaranth starch, etc., with cornstarch being particularly preferred), kaolin, calcium carbonate, magnesium carbonate, titanium dioxide, magnesium stearate, bentonite, and silica. Skin care powders consisting of single particles of approximately the same size and nearly spherical shape, such as starch particles, are particularly preferred because they are more likely to accumulate, the gaps between the accumulated particles 81 are smaller, and the powders have excellent fragrance retention. When multiple powder components are used, a powder containing approximately 80 to 96% by weight of talc and approximately 1 to 10% by weight of cornstarch is preferred. It is also preferred that some or all of the skin care powder 80 be porous particles, such as porous starch particles.

[0073] The 50% diameter (median diameter) of skin care powder 80 is preferably 10 to 30 μm, and preferably 15 to 20 μm. The 50% diameter (volume basis) of skin care powder 80 is based on JIS Z 8825:2013 and is obtained by measuring a suspension of skin care powder 80 with a laser diffraction / scattering device (for example, a laser diffraction particle size distribution analyzer SALD-200V ER manufactured by Shimadzu Corporation). The 10% diameter (volume basis) of skin care powder 80 is preferably 5 to 10 μm. The 90% diameter (volume basis) of skin care powder 80 is preferably 60 to 80 μm.

[0074] The fragrance contained in the accumulation 81 of the skin care powder 80 may be either a natural fragrance or a synthetic fragrance, but it is preferable to use a liquid fragrance that has been blended to have a masking effect on the odor of excrement (the effect of competing with or overcoming the odor and making the odor less noticeable), or in particular a harmonizing effect (the effect of harmonizing with the odor and making it less unpleasant). Specific examples of fragrances include natural extracts such as agave, benzoin, sea lion incense, spirit cat incense, clove oil, galbanum, jasmine absolute, lovetanum, mate tea, melilot, mimosa, musk tonkin, myrrh, oakmoss or moss de chene, frankincense, angelica, orris, batouli, rosemary oil, sandalwood oil, vetiver oil, and violet leaf absolute; various synthetic fragrances such as higher alcohols, aldehydes, benzaldehyde, benzoic acid, cinnamic acid, cinnamic aldehyde, cinnamic alcohol, coumarin, esters, indole, ketone, salicylic acid and related compounds, terpenoids, and vanillin; and mixtures of two or more of these. Commercially available fragrances can be widely used. Highly volatile fragrances are preferred.

[0075] Furthermore, the accumulation 81 of the skin care powder 80 may contain, as trace ingredients, one or more ingredients selected from oil-based moisturizers and powder scattering prevention agents such as olive oil, squalane, lanolin derivatives, and medium-chain fatty acid triglycerides (MCT), astringents such as aluminum chlorohydrate powder and zinc oxide powder, preservatives such as parahydroxybenzoic acid esters, disinfectants such as benzalkonium chloride, benzethonium chloride, and isopropylmethylphenol, aqueous moisturizing ingredients such as plant extracts, deodorizing ingredients such as green tea extract, anti-inflammatory agents such as glycyrrhizinate and allantoin, and various pigments.

[0076] This disposable diaper can be manufactured by spraying a suspension containing a fragrance, skin care powder 80, and water onto the surface of the absorbent element 50 using a spray or the like before covering the front side of the absorbent element 50 with another member (top sheet 30 in the illustrated example), and then drying the surface of the absorbent element 50 (absorbed and evaporated by the absorber 56). That is, much of the suspension sprayed onto the surface of the absorbent element 50 is supplied into the recesses 51, and the suspension adhering to the outside of the recesses 51 flows down into the recesses 51. As a result, much of the suspension is supplied into the recesses 51, and subsequent drying leaves accumulations 81 of the skin care powder 80 and the fragrance contained therein remaining in the recesses 51. Figure 16 is a photograph of the surface of a wrapping paper 58 having recesses 51 manufactured using this manufacturing method. The white parts represent the skin care powder 80 and its accumulations, and the black parts represent the wrapping paper.

[0077] The skin care powder 80 may be present throughout the entire width direction WD of the absorbent element 50, or may be present only in the middle portion excluding both ends in the width direction WD, as shown by the two-dot chain lines in Figures 10 and 15. The skin care powder 80 may be present throughout the entire front-to-rear direction LD of the absorbent element 50, as shown by the two-dot chain line in Figure 10, or may be present only in a partial region, such as only on both the front and rear sides or only on either side of the crotch region M, as shown by the two-dot chain line in Figure 15.

[0078] The skin care powder 80 and its accumulations 81 may be present almost entirely only within the recesses 51 on the surface of the absorbent element 50, but may be present both inside and outside the recesses 51 for ease of manufacturing. The accumulations 81 of skin care powder 80 are preferably disposed over almost the entire recesses 51 (e.g., 80% or more of the area) located in the skin care powder 80 adhesion region, but may be disposed over only a portion of the recesses 51. When the recesses 51 have a certain area or length, a single recess 51 having an accumulation 81 of skin care powder 80 may have the accumulation 81 of skin care powder 80 present in a layer across its entirety, or may have a portion where no skin care powder 80 is present (i.e., the accumulations may be present in a patchy or discontinuous pattern). It is particularly preferable that the accumulations 81 of skin care powder 80 are formed at least in the corners of the recesses 51, as this makes it easier to maintain the accumulation of skin care powder 80.

[0079] The amount of skin care powder 80 used can be determined as appropriate, but in general, the basis weight of the skin care powder 80 on the upper surface of the absorbent element 50 is 0.2 to 2 g / m 2 degree, especially 0.2 to 1 g / m 2 The amount of skin care powder 80 in the recesses 51 is preferably about 1 to 10 g / m. 2 degree, especially 1-5g / m 2 By having a sufficient amount of skin care powder 80 in recesses 51, it becomes easier to maintain the accumulated state of skin care powder 80, and the sustained release properties are less likely to be impaired.

[0080] If the skin care powder 80 can pass through the gaps between the fibers of the top sheet 30 and migrate to the front side of the top sheet 30, it will adhere to the wearer's skin and provide a skin care effect. That is, when the skin care powder 80 adheres to the skin, capillary action draws sweat and other liquids on the skin surface away from the wearer's skin, keeping the wearer's skin appropriately dry (smooth). In this case, if another sheet is present between the top sheet 30 and the surface of the absorbent element 50, the migration of the skin care powder 80 into the top sheet 30 will be inhibited. Furthermore, considering ease of manufacturing, it is desirable to adhere the top sheet 30 to the backside member with a hot melt adhesive HM. However, this hot melt adhesive HM not only blocks the migration of the skin care powder 80 into the top sheet 30, but also fixes the skin care powder 80 to the surrounding members during manufacturing. Therefore, as shown in the illustrated example, it is preferable not to interpose another sheet between the top sheet 30 and the surface of the absorbent element 50. Furthermore, it is preferable that the adhesive surfaces of the top sheet 30 and the absorbent element 50 are bonded in a mesh pattern with scattered non-adhesive areas, and that the skin care powder 80 is contained at least in the area where the recesses 51 and the non-adhesive areas overlap, because this prevents the movement of the skin care powder 80 into the top sheet 30 from being hindered by other sheets.

[0081] As the mesh pattern with scattered non-bonded portions, known regular or irregular patterns such as a spiral pattern can be used. Bonding in such a mesh pattern can be achieved using, for example, Nordson's CF nozzle or Summit nozzle (spiral pattern), Signature spray nozzle (irregular fiber pattern), or Suntool's ZIP nozzle (Z-shaped pattern) or spiral nozzle (spiral pattern).

[0082] Considering the retention and permeability of the skin care powder 80 described above, the top sheet 30 is preferably a relatively thin nonwoven fabric having sufficient fiber gaps, for example, a fineness of 1 to 3 dtex and a basis weight of 10 to 25 g / m 2A spunbond nonwoven fabric having a thickness of 0.1 to 0.5 mm can be suitably used. In this case, if the basis weight of the hot melt adhesive HM is too high, the hot melt adhesive HM will be sticky when the product surface comes into contact with the skin, so the basis weight of the hot melt adhesive HM on the adhesive surface between the top sheet 30 and the absorbent element 50 should be 1 to 3 g / m. 2 Furthermore, it is preferable that the nonwoven fabric used for the top sheet 30 is a point-bonded nonwoven fabric in which heat-sealed portions are scattered at intervals, because this stabilizes the density of the fibers and stabilizes the retention and permeability of the skin care powder 80.

[0083] Since the surface of the absorbent element 50 is formed by the wrapping paper 58, it is preferable to use wrapping paper 58 that is impermeable to the skin care powder 80 and has excellent retention of the skin care powder 80. Such wrapping paper 58 has a basis weight of 10 to 20 g / m 2 Examples of suitable crepe paper include crepe paper with a width of approximately 0.05 to 0.2 mm, a thickness of approximately 0.05 to 0.2 mm, and a crepe ratio of approximately 10 to 30%. Crepe paper is not only highly dense and impermeable to skin care powder 80, but also has numerous fine crepes (crepe-like wrinkles) on its surface, which has the advantage of making it easier for skin care powder 80 to be retained on the absorbent element 50. The crepe is preferably dry crepe, which occurs when a dry fiber web is peeled off from a Yankee dryer or the like in the dryer section with a doctor knife or the like. The crepe ratio of the crepe paper is not particularly limited, but is preferably 20 to 25% from the viewpoint of preventing penetration of skin care powder 80. The crepe ratio can be calculated by ((peripheral speed of the dryer during papermaking) - (peripheral speed of the reel)) / (peripheral speed of the dryer during papermaking) x 100.

[0084] (Get up and gather) The rising gathers 60 have rising portions 68 that rise from the sides of the inner body 200, and these rising portions 68 come into contact with the area from the wearer's groin through the legs to the buttocks to prevent side leakage. In the illustrated example, the rising gathers 60 have a base side portion 60B that rises obliquely toward the center in the width direction, and a tip side portion 60A that rises obliquely from the intermediate portion toward the outside in the width direction, but the present invention is not limited to this and can be modified as appropriate, such as one that rises toward the center in the width direction as a whole.

[0085] More specifically, the rising gathers 60 in the illustrated example are formed by folding a strip-shaped gathered sheet 62, having a length equal to the longitudinal length of the inner body 200, in two by folding back the leading end in the width direction WD, and by fixing a plurality of elongated gathered elastic members 63 between the folded-back portion and the sheet in the vicinity thereof in a stretched state along the longitudinal direction at intervals in the width direction WD. A base end portion of the rising gathers 60 opposite the leading end (the end portion opposite the folded-back portion of the sheet in the width direction WD) serves as a root portion 65 fixed to the side portion of the inner body 200, and the portion other than the root portion 65 serves as a main body portion 66 (the portion on the folded-back portion side) extending from the root portion 65. The main body portion 66 further has a root portion 60B extending toward the center in the width direction and a tip portion 60A folded back at the leading end of the root portion 60B and extending outward in the width direction. The front-to-rear end portions of the main body portion 66 are formed as fallen portions 67 which are fixed in a fallen state to the side surfaces of the top sheet 30, while the front-to-rear intermediate portion between them is formed as an unfixed raised portion 68, and a gathered elastic member 63 extending along the front-to-rear direction LD is fixed in a stretched state to at least the tip portion of this raised portion 68.

[0086] In the rising gathers 60 configured as described above, the contractile force of the gather elastic member 63 causes the rising portions 68 to rise up so as to come into contact with the skin as shown by the arrows in Fig. 3. In particular, when the base portion 65 is located on the back side of the inner body 200, the rising portions 68 rise up so as to open outward in the width direction in the crotch region and its vicinity, so that the rising gathers 60 come into contact with the surrounding legs with a full surface, improving fit. The base portion 65 can also be fixed to the front side of the inner body 200, for example, to the surfaces of both side portions of the top sheet 30.

[0087] In a bent structure such as the illustrated example of the rising gathers 60, in which the main body portion 66 is composed of a base portion 60B extending toward the center in the width direction and a tip portion 60A folded back at the tip of the base portion 60B and extending outward in the width direction, the tip portion 60A and the base portion 60B are joined in a folded state at the fallen portion 67, and the base portion 60B is joined in a folded state to the topsheet 30. To join the opposing surfaces at the fallen portion 67, at least one of various application methods of hot melt adhesive and material welding means such as heat sealing and ultrasonic sealing can be used. In this case, the joining of the base portion 60B and the topsheet 30 and the joining of the tip portion 60A and the base portion 60B may be performed by the same means or by different means. For example, it is preferable to join the root side portion 60B and the top sheet 30 with a hot melt adhesive, and to join the tip side portion 60A and the root side portion 60B with material welding.

[0088] As the gathered sheet 62, a nonwoven fabric that is soft and has excellent uniformity and hiding power, such as a spunbond nonwoven fabric (SS, SSS, etc.), an SMS nonwoven fabric (SMS, SSMMS, etc.), or a meltblown nonwoven fabric, and that has been subjected to a water-repellent treatment with silicone or the like as necessary, can be suitably used. In this case, the fiber weight of the nonwoven fabric is 10 to 30 g / m 2 Although not shown, a waterproof film can be interposed between the two folded gathered sheets 62.

[0089] The gathered elastic members 63 can be made of rubber thread or the like. When spandex rubber thread is used, the thickness is preferably 470 to 1240 dtex, more preferably 620 to 940 dtex. The elongation percentage of the gathered elastic members 63 in the attached state is preferably 150 to 350%, more preferably 200 to 300%. The number of gathered elastic members 63 is preferably 2 to 6, more preferably 3 to 5. The appropriate spacing between the gathered elastic members 63 is 3 to 10 mm. With this configuration, the gathered elastic members 63 can easily contact the skin over their entire surface within the range where they are arranged. The gathered elastic members 63 may be arranged not only on the tip side but also on the base side.

[0090] In the rising portion 68 of the rising gathers 60, at least one of various application methods of hot melt adhesive and material welding, such as heat sealing or ultrasonic sealing, can be used to bond the inner and outer layers of the gathered sheet 62 together and to secure the gathered elastic member 63 sandwiched therebetween. Since bonding the entire inner and outer layers of the gathered sheet 62 together reduces flexibility, it is preferable to leave the areas other than the adhesive portion of the gathered elastic member 63 unbonded or to only weakly bond them. In the illustrated example, hot melt adhesive is applied only to the outer peripheral surface of the gathered elastic member 63 using an application means such as a comb gun or a SureWrap nozzle, and the gathered elastic member 63 is sandwiched between the inner and outer layers of the gathered sheet 62. This results in a structure in which the gathered elastic member 63 is secured to the inner and outer layers of the gathered sheet 62 and the inner and outer layers of the gathered sheet 62 are secured together solely by the hot melt adhesive applied to the outer peripheral surface of the gathered elastic member 63.

[0091] Similarly, the fallen portion 67 can be fixed by at least one of various application methods of hot melt adhesive and material welding such as heat sealing or ultrasonic sealing.

[0092] (Side flap) 1 to 4, etc., side flaps 70 extending out to the sides of the absorbent body 56 are provided on both sides of the inner body 200, and it is preferable that side stretchable regions SG that stretch in the front-to-rear direction are formed in these side flaps 70. The side flaps 70 in the illustrated example have one or more elongated side elastic members 73 arranged along the front-to-rear direction LD and spaced apart from one another, a first sheet layer 71 facing the outside of the side elastic member 73, and a second sheet layer 72 facing the inside of the side elastic member 73.

[0093] The sheet material forming the first sheet layer 71 and the second sheet layer 72 is not particularly limited, and any suitable nonwoven fabric can be selected, such as the nonwoven fabric that can be used for the above-mentioned rising gathers 60 and the above-mentioned outer bodies 12F, 12B. In the illustrated example, the first sheet layer 71 and the second sheet layer 72 are formed by extending the gathered sheet 62 of the rising gathers 60, as will be described later. In this case, the front and rear ends of the side flaps 70 coincide with the front and rear ends of the rising gathers 60 (i.e., the front and rear ends of the inner body 200 in this case).

[0094] The side elastic members 73 are not particularly limited, and can be elongated elastic members similar to the gathered elastic members 63 described above. The extension percentage of the side elastic members 73 in the attached state is preferably 150 to 350%, more preferably 200 to 270%. The number of side elastic members 73 is preferably 2 to 16, more preferably 6 to 10. The appropriate spacing between the side elastic members 73 is 5 to 10 mm.

[0095] The side elastic members 73 are fixed to the first sheet layer 71 and the second sheet layer 72. Various application methods of hot melt adhesive HM or material welding methods such as heat sealing and ultrasonic sealing can be used to bond the first sheet layer 71 and the second sheet layer 72 together and to secure the side elastic members 73 sandwiched between them. Because a large bonded area between the first sheet layer 71 and the second sheet layer 72 reduces flexibility, it is preferable to leave the portions of the side elastic members 73 unbonded or to only weakly bond them. In the illustrated example, the hot melt adhesive HM is applied only to the outer peripheral surfaces of the side elastic members 73 using an application method such as a comb gun or a SureWrap nozzle, and then the side elastic members 73 are sandwiched between the first sheet layer 71 and the second sheet layer 72. The hot melt adhesive HM applied only to the outer peripheral surfaces of the side elastic members 73 secures the side elastic members 73 to the first sheet layer 71 and the second sheet layer 72 and secures the first sheet layer 71 and the second sheet layer 72 together.

[0096] In the illustrated example, the sheet material constituting the first sheet layer 71 and the sheet material constituting the second sheet layer 72 are folded back at the side edges of the side flaps 70, and these folded back portions are fixed (the bag is closed) to the back surface of the liquid-impermeable sheet 11. This fixing can be performed with a hot melt adhesive HM as in the illustrated example, or by welding the materials.

[0097] The side flaps 70 may be omitted.

[0098] (exterior body) As shown in the figure, the outer coverings 12F, 12B consist of a rectangular front outer covering 12F that forms at least the waistline of the front body F, and a rectangular back outer covering 12B that forms at least the waistline of the back body B. The front outer covering 12F and the rear outer covering 12B may not be continuous at the crotch side and may be spaced apart in the front-to-back direction LD (two-piece outer covering type), or may be continuous from the front body to the back body (integrated outer covering type), as not shown. In the two-piece outer covering type, the front-to-back distance 12d may be, for example, approximately 40 to 60% of the total length Y. In the figure, the lower edges of the front outer covering 12F and the rear outer covering 12B are linear along the width direction WD, but the lower edge of at least one of the front outer covering 12F and the rear outer covering 12B may be curved to fit around the legs.

[0099] In a two-piece outer-casing pants-type disposable diaper, the inner body 200 is exposed between the front outer body 12F and the rear outer body 12B. Therefore, to prevent the liquid-impermeable sheet 11 from being exposed on the back surface of the inner body 200, a cover nonwoven fabric 13 is preferably provided on the back surface of the inner body 200, extending from between the front outer body 12F and the inner body 200 to between the rear outer body 12B and the inner body 200. The inner and outer surfaces of the cover nonwoven fabric 13 can be bonded to their respective opposing surfaces with a hot-melt adhesive. The nonwoven fabric used for the cover nonwoven fabric 13 can be selected appropriately from a material similar to that of the outer bodies 12F and 12B. Although not shown, the outer body may be continuous from the front body F to the back body B, passing through the crotch area. In this case, the outer body will have not only a portion corresponding to the waist region T but also a portion corresponding to the middle region L.

[0100] The front exterior body 12F and the rear exterior body 12B have a front waist portion and a rear waist portion that form the waist region T. In the example shown in Figures 1 and 2, the front exterior body 12F and the rear exterior body 12B have the same dimensions in the front-to-rear direction LD, and the front exterior body 12F and the rear exterior body 12B do not have a portion corresponding to the middle region L, but as shown in Figure 7, the rear exterior body 12B may have a longer dimension in the front-to-rear direction than the front exterior body 12F, and the front exterior body 12F does not have a portion corresponding to the middle region L, but the rear exterior body 12B may have a buttocks cover portion C extending from the waist region T toward the middle region L. Although not shown, the front exterior body 12F may also be provided with a groin cover portion extending from the waist region T toward the middle region L.

[0101] As shown in Figures 4 and 5, the exterior bodies 12F, 12B are formed by joining an outer sheet layer and an inner sheet layer adjacent to the outer and inner sides of the elastic members 16-19 (described later) using a joining method such as a hot melt adhesive or welding. The outer sheet layer and the inner sheet layer can be formed from two sheets 12S, 12H as shown in the illustrated example, or from a single sheet material. For example, in the latter case, the inner sheet layer and the outer sheet layer are respectively formed by the inner and outer portions of a single sheet material folded back at the edge of the waist opening WO (which may be the edge on the crotch side) in part or all of the exterior bodies 12F, 12B. The illustrated example shows the former case, in which the sheet material 12S forming the outer sheet layer in the lower waist portion is folded back around the waist opening WO side of the sheet material 12H forming the inner sheet layer in the lower waist portion and folded back inward, with this folded back portion 12r extending to cover the edge of the interior body 200 on the waist opening WO side. On the other hand, in the waist portion, the folded portion 12r serves as an inner sheet layer adjacent to the inside of the elastic member.

[0102] The exterior bodies 12F, 12B incorporate elastic members 16-19 to improve the fit around the wearer's waist, and form a stretchable region A2 that stretches elastically in the width direction WD in response to the stretching of the elastic members 16-19. In this stretchable region A2, the exterior bodies 12F, 12B contract in their natural length state as the elastic members contract, forming wrinkles or creases. When stretched in the longitudinal direction of the elastic members, they can be stretched to a predetermined stretch rate without wrinkles. The elastic members 16-19 can be elongated elastic members such as rubber threads (illustrated example), as well as known elastic members in strip, net, film, and other shapes, without any particular limitation. The elastic members 16-19 may be made of synthetic or natural rubber.

[0103] To explain the elastic members 16-19 in the illustrated example in more detail, a plurality of waist elastic members 17 are attached to the waist portion W of the outer bodies 12F, 12B at intervals in the front-to-rear direction so as to be continuous over the entire width direction WD. Of the waist elastic members 17, one or more arranged in the region adjacent to the lower waist portion U may overlap the inner body 200, or may be provided on both sides in the width direction except for the central portion in the width direction that overlaps with the inner body 200. The waist elastic members 17 should have a thickness of 155-1880 dtex, particularly about 470-1240 dtex (in the case of synthetic rubber; in the case of natural rubber, a cross-sectional area of ​​0.05-1.5 mm). 2 , especially 0.1 to 1.0 mm 2 It is preferable to provide about 2 to 15, and especially about 4 to 10, rubber threads of about 1 / 4" thick (approximately 1 / 4" thick) at intervals of 2 to 12 mm, especially 3 to 7 mm, and the resulting elongation rate in the width direction WD of the waist portion W is preferably about 150 to 400%, especially about 220 to 320%. Furthermore, it is not necessary for the waist portion W to use elastic members of the same thickness or to have the same elongation rate all along the front-to-back direction LD, and for example, the thickness or elongation rate may be different in some areas.

[0104] Additionally, a plurality of lower waist elastic members 16, 19 made of elongated elastic members are attached to the lower waist portion U of the exterior bodies 12F, 12B at intervals in the front-to-back direction to form a lower waist stretchable region (a region having lower waist elastic members 16, 19). The lower waist elastic members 16, 19 have a thickness of 155 to 1880 dtex, particularly about 470 to 1240 dtex (in the case of synthetic rubber, or a cross-sectional area of ​​0.05 to 1.5 mm in the case of natural rubber). 2 , especially 0.1 to 1.0 mm 2 It is preferable to provide about 5 to 30 elastic threads of about 100 mm thick (approximately 1 / 2" thick) at intervals of 1 to 15 mm, especially 3 to 8 mm, and the resulting elongation rate in the width direction WD of the waist lower portion U is preferably about 200 to 350%, especially about 240 to 300%. Furthermore, it is not necessary for the waist lower portion U to use elastic members of the same thickness or have the same elongation rate all over its front-to-back direction LD, and thicknesses and elongation rates may vary in some areas.

[0105] When elastic members 16, 19 are provided in the front-to-back range including the absorbent body 56, as in the lower waist portion U in the illustrated example, in order to prevent contraction of the absorbent body 56 in the width direction WD in part or all of the region, it is preferable to designate the widthwise middle portion, including part or all of the portion overlapping with the absorbent body 56, as a non-elasticated region A1, and designate both widthwise sides of this as elasticated regions A2 (in the illustrated example, these are lower-waist elasticated regions). The widthwise dimension of the elasticated regions A2 provided on both sides of the non-elasticated region A1 may be substantially constant in the front-to-back direction LD as in the illustrated example, or may vary in the front-to-back direction LD, although not shown. Furthermore, the widthwise dimension of the elasticated regions A2 provided on both sides of the non-elasticated region A1 in the width direction WD may be substantially the same in the front body portion F and the back body portion B, or may be different.

[0106] The stretchable region A2 and non-stretchable region A1 can be constructed by attaching elastic members 16-17, 19 between the inner and outer sheet layers, and then cutting the elastic members 16, 19 into small pieces by applying pressure and heat or cutting them at one location in the middle of the width of the region that will become the non-stretchable region A1, or across almost the entire region, leaving stretchability in the stretchable region A2 while eliminating stretchability in the non-stretchable region A1. Note that unnecessary elastic members 18 that do not substantially contribute to the formation of stretchability will remain in the non-stretchable region A1.

[0107] The sheet materials 12S, 12H forming the inner and outer sheet layers can be used without any particular limitation, but nonwoven fabric is preferred. When nonwoven fabric is used, the basis weight per sheet is 10 to 30 g / m 2 It is preferable to set it to about this level.

[0108] The elastic members 16-19 can be fixed to the exterior bodies 12F, 12B by known methods. The inner sheet layer and the outer sheet layer can also be joined to each other by known methods. For example, in the portions of the exterior bodies 12F, 12B having the elastic members 16-19, a hot melt adhesive HM can be applied only to the outer peripheral surfaces of the elastic members 16-19 using an application means such as a comb gun or a SureWrap nozzle, and the elastic members can then be sandwiched between the inner sheet layer and the outer sheet layer. The hot melt adhesive HM applied only to the outer peripheral surfaces of the elastic members 16-19 can then be used to fix the elastic members 16-19 to the inner sheet layer and the outer sheet layer, and the inner sheet layer and the outer sheet layer together.

[0109] (Interior body fixing part) The inner body 200 can be fixed to the outer bodies 12F, 12B by a joining means that uses material welding, such as heat sealing or ultrasonic sealing, or by a hot melt adhesive. In the illustrated example, the inner body 200 is fixed to the inner surfaces of the outer bodies 12F, 12B via a hot melt adhesive that is applied to the back surface of the inner body 200, that is, in this case, the back surface of the liquid-impermeable sheet 11 and the base portions 65 of the rising gathers 60. The inner body fixing portion 20 that fixes the inner body 200 to the outer bodies 12F, 12B can be provided over almost the entire overlapping area, as shown in Figure 2, and can also be provided in a portion of the inner body 200 excluding both widthwise ends, for example.

[0110] <Explanation of terms used in the specification> In the present specification, the following terms have the following meanings unless otherwise specified in the specification.

[0111] "Front-rear direction" refers to the direction indicated by the symbol LD in the drawing (longitudinal direction), and "width direction" refers to the direction indicated by the symbol WD in the drawing (left-right direction), with the front-rear direction and width direction being perpendicular to each other.

[0112] "Front side" means the side closest to the wearer's skin when worn, and "reverse side" means the side farthest from the wearer's skin when worn.

[0113] "Front" means the side closest to the wearer's skin when worn, and "back" means the side away from the wearer's skin when worn.

[0114] "Elongation rate" refers to the value when the natural length is 100%. For example, an elongation rate of 200% is equivalent to an elongation ratio of 2 times.

[0115] "Gel strength" is measured as follows: 1.0 g of superabsorbent polymer is added to 49.0 g of artificial urine (a mixture of 2 wt% urea, 0.8 wt% sodium chloride, 0.03 wt% calcium chloride dihydrate, 0.08 wt% magnesium sulfate heptahydrate, and 97.09 wt% ion-exchanged water) and stirred with a stirrer. The resulting gel is left in a constant temperature and humidity chamber at 40°C and 60% RH for 3 hours, then returned to room temperature, and the gel strength is measured using a card meter (I.techno Engineering: Curdmeter-MAX ME-500).

[0116] "Basis weight" is measured as follows: After pre-drying the sample or test piece, leave it in a test room or device under standard conditions (test location: temperature 23±1°C, relative humidity 50±2%) until it reaches a constant weight. Pre-drying refers to bringing the sample or test piece to a constant weight in an environment at a temperature of 100°C. Note that pre-drying is not necessary for fibers with an official moisture regain of 0.0%. From the test piece that has reached a constant weight, use a sample collection template (100mm x 100mm) to cut out a sample measuring 100mm x 100mm. Measure the weight of the sample and multiply it by 100 to calculate the weight per square meter, which is the basis weight.

[0117] The "thickness" of thick members such as the absorber 56, the absorbent element 50, and the bottom of the recess 51 is measured using a thickness measuring device (Peacock, Dial Thickness Gauge, Model H (measurement range 0 to 10 mm, measurement area 10 mm diameter circular terminal, measurement force approximately 1.7 N, pressure approximately 21.7 KPa)) manufactured by Ozaki Manufacturing Co., Ltd., with the sample and the thickness measuring device held horizontally.

[0118] The "thickness" of thin sheets such as nonwoven fabrics was measured using an automatic thickness measuring device (KES-G5 handy compression measurement program) with a load of 0.098 N / cm 2 , and pressure area: 2cm 2 Automatic measurement is performed under the following conditions.

[0119] The water absorption capacity is measured according to JIS K7223-1996 "Test method for water absorption capacity of superabsorbent resins."

[0120] The water absorption rate is the "time to the end point" when 2g of superabsorbent polymer and 50g of physiological saline are used and the test is carried out in accordance with JIS K7224-1996 "Test method for water absorption rate of superabsorbent polymers."

[0121] "Deployed state" means a flat, deployed state without contraction (including any contraction, such as contraction due to elastic members) or slack.

[0122] Unless otherwise specified, the dimensions of each part refer to the dimensions in the unfolded state, not in the natural length state.

[0123] If no environmental conditions are specified for a test or measurement, the test or measurement shall be carried out in a test room or device under standard conditions (temperature of 23±1°C, relative humidity of 50±2%). [Industrial Applicability]

[0124] The present invention is suitable for pants-type disposable diapers in that solving the above-mentioned problems is particularly important, but it can also be used for disposable absorbent articles in general, such as tape-type disposable diapers, pad-type disposable diapers, and sanitary napkins. [Explanation of symbols]

[0125] 11...liquid-impermeable sheet, 12A...side seal, 12B...rear outer body, 12E...waist extension portion, 12F, 12B...outer body, 12F...front outer body, 12S, 12H...sheet material, 13...cover nonwoven fabric, 16, 19...waist lower elastic member, 17...waist elastic member, 18...unnecessary elastic member, 20...inner body fixing portion, 200...inner body, 30...top sheet, 40...intermediate sheet, 50...absorbent element, 51...recess, 51d...bottom surface, 51f...unit frame, 51s...slope, 56...absorbent body, 56L...low basis weight portion, 58...wrapping paper, 60...rising gathers, 60A...tip side portion, 60B...base side portion, 62...gathered sheet , 63...gathered elastic member, 67...folded portion, 68...rising portion, 70...side flap, 71...first sheet layer, 72...second sheet layer, 73...side elastic member, 80...skin care powder, 81...accumulation, A1...non-stretchable region, A2...stretchable region, B...back body, C...buttocks covering portion, F...front body, HM...hot melt adhesive, HM1...first hot melt adhesive, HM2...second hot melt adhesive, L...middle region, LD...front and rear directions, LO...leg opening, M...crotch region, SG...side stretchable region, SR...side region, T...torso region, U...lower waist region, W...waist region, WD...width direction, WO...waist opening.

Claims

1. an absorbent element having an absorbent body provided in a region including a crotch region and a wrapping paper wrapping the absorbent body, the surface of which is made of the wrapping paper; a liquid-permeable top sheet provided to have a portion covering the front side of the absorbent element; the absorbent element has recesses on its surface in a spaced apart or continuous grid pattern; The recessed portion is recessed from the surface of the absorbent element to the absorbent body, The recess has an accumulation of skin care powder, and the accumulation contains a fragrance, the skin care powder is present both inside and outside the recesses, the amount of the skin care powder within the recess is greater than the amount of the skin care powder outside the recess; A disposable absorbent article characterized by:

2. The amount of the skin care powder in the recess is 1 to 10 g / m ２ That is, The disposable absorbent article of claim 1.

3. The recess is formed by compressing the absorbent element in a thickness direction so as to be recessed from the surface of the absorbent element into the absorbent body, The recess has a bottom surface and a slope that slopes upward in a direction away from the edge of the bottom surface, The depth of the bottom surface of the recess is 1 to 5 mm, the ratio of the bottom surface of the recess to the surface of the absorbent element is 5 to 25%; The proportion of the slope of the recessed portion on the surface of the absorbent element is 9 to 45%.

3. The disposable absorbent article according to claim 1 or 2.

4. The recesses are formed in a grid pattern over the entire front-rear direction and the entire width direction of the absorbent element, The width of the bottom surface of the recess is 1 to 10 mm, The width and front-rear dimensions of the unit frame formed by the recess are each 10 to 25 mm.

4. The disposable absorbent article of claim 3.

5. the top sheet is a nonwoven fabric, The recess is provided in an area overlapping a skin contact area that contacts the wearer's skin, At least a portion of the skin care powder is not fixed to a surrounding member and is able to pass through the top sheet and move to the front side of the top sheet, the top sheet is adhered to the surface of the absorbent element via a hot melt adhesive without any other sheet therebetween; The adhesive surfaces of the top sheet and the absorbent element are bonded in a net-like pattern with non-adhesive portions scattered therebetween, The skin care powder is disposed in an area overlapping the non-adhesive portion. The disposable absorbent article according to any one of claims 1 to 4.

6. The top sheet has a fineness of 1 to 3 dtex and a basis weight of 10 to 25 g / m ２ , a spunbond nonwoven fabric having a thickness of 0.1 to 0.5 mm; The basis weight of the hot melt adhesive on the adhesive surface between the top sheet and the absorbent element is 1 to 3 g / m ２ That is, 6. The disposable absorbent article of claim 5.

7. The wrapping paper has a basis weight of 10 to 20 g / m ２ , a thickness of 0.05 to 0.2 mm, a crepe rate of 10 to 30%, The disposable absorbent article according to any one of claims 1 to 6.

8. The 50% diameter of the skin care powder is 10 to 30 μm, The basis weight of the skin care powder on the surface of the absorbent element is 0.2 to 2 g / m ２ That is, The disposable absorbent article according to any one of claims 1 to 7.

9. The skin care powder consists of starch particles only. The disposable absorbent article according to any one of claims 1 to 8.

10. an absorbent element having an absorbent body provided in a region including a crotch region and a wrapping paper wrapping the absorbent body, the surface of which is made of the wrapping paper; A liquid-permeable top sheet provided to have a portion covering the front side of the absorbent element, forming the absorbent element having recesses on its surface in either a spaced apart pattern or a continuous grid pattern; a step of spraying a suspension containing a mixture of fragrance, skin care powder and water onto the surface of the absorbent element having the recesses before attaching the top sheet, and allowing the suspension adhering to the outside of the recesses to flow down into the recesses, thereby supplying more of the suspension into the recesses than outside the recesses; the surface of the absorbent element is dried, and the accumulation of the skin care powder and the fragrance contained therein are left in the recesses. A method for manufacturing a disposable absorbent article.

Images