Absorbent article

Abstract

To provide an absorbent article capable of preventing stuffiness and a skin trouble while enhancing a fitting property and a leakage prevention property around the legs.SOLUTION: An absorbent article further includes a stretchable leg gather part disposed along a leg opening part disposed around the legs of a wearer. The leg gather part includes a first non-woven fabric layer disposed on a non-skin side, a second non-woven fabric layer opposed to the first non-woven fabric layer in a thickness direction and disposed on a skin side, a film layer disposed between the first non-woven fabric layer and the second non-woven fabric layer, and composed of a moisture-permeable film, an outside stretchable area including an outside elastic member, and an inside stretchable area including an inside elastic member and disposed more on a horizontal direction inner side than the outside stretchable area. The film layer includes an end part area in which a side end part is turned up on the skin side. The end part area is disposed between the outside stretchable area and the inside stretchable area. A wearing pressure of the inside stretchable area is lower than a wearing pressure of the outside stretchable area.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to absorbent articles such as disposable diapers. [Background technology]

[0002] Absorbent articles such as disposable diapers have, for example, a waist opening arranged around the abdomen of a wearer and a pair of leg openings arranged around the legs of the wearer. From the viewpoint of improving fit and leak prevention when worn, a technique is known in which an elastic member is arranged along the leg openings to form leg gathers.

[0003] For example, Patent Document 1 discloses a pants-type absorbent article having a side sheet, a plastic film laminated on the side sheet, and a leg elastic disposed between them, and having side flaps that form part of the leg opening. Patent Document 2 discloses an absorbent article including a sheet for forming a three-dimensional gather portion and a water-repellent film, and having an outer three-dimensional gather portion in which an elastic member is sandwiched at the end where the water-repellent film is not disposed. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-92947 A [Patent Document 2] JP 2013-252323 A Summary of the Invention [Problem to be solved by the invention]

[0005] By placing a film in the leg gathers, the leak prevention properties of the leg gathers are improved. On the other hand, films tend to have lower moisture permeability and air permeability than nonwoven fabrics, etc. For this reason, when the wearing pressure of leg gathers that contain a film is increased to improve the fit and leak prevention, there are concerns that it may cause stuffiness and associated skin troubles.

[0006] The present invention relates to an absorbent article that can improve the fit and leak-proofness around the legs while preventing stuffiness and skin troubles. [Means for solving the problem]

[0007] An absorbent article according to one embodiment of the present invention comprises a waist opening positioned around the abdomen of a wearer, and a pair of leg openings positioned around the legs of the wearer, and has a vertical direction extending from the abdomen of the wearer through the crotch region to the back, a horizontal direction perpendicular to the vertical direction and corresponding to the left-right direction of the wearer, and a thickness direction perpendicular to the vertical direction and the horizontal direction. The absorbent article comprises: The garment further includes elasticated leg gathers disposed along the leg openings. The leg gather portion is A first nonwoven fabric layer disposed on the non-skin side; A second nonwoven fabric layer disposed opposite the first nonwoven fabric layer in the thickness direction and on the skin side; a film layer disposed between the first nonwoven fabric layer and the second nonwoven fabric layer and made of a moisture-permeable film; an outer elastic region including an outer elastic member disposed between the first nonwoven layer and the second nonwoven layer and extending in the longitudinal direction; The lining has an inner elastic region that includes an inner elastic member disposed between the first nonwoven fabric layer and the second nonwoven fabric layer and extends in the longitudinal direction, and is located laterally inward of the outer elastic region. The film layer comprises: The moisture-permeable film has side edges in the lateral direction that have end regions turned toward the skin. The end regions are disposed between the outer elasticated region and the inner elasticated region. The inner elasticated region has a lower wearing pressure than the outer elasticated region. Effect of the Invention

[0008] According to the absorbent article of the present invention, it is possible to prevent stuffiness and skin troubles while improving the fit and leak-proofness around the legs. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of an absorbent article (disposable diaper) according to one embodiment of the present invention. [Diagram 2] FIG. 2 is a plan view of the disposable diaper, as viewed from the skin side (top sheet side) in a state in which the elastic members of each portion are stretched and spread out flat. [Diagram 3] FIG. 3 is a schematic cross-sectional view of the disposable diaper taken along line III-III in FIG. 2. [Figure 4] FIG. 4 is an enlarged view of a main part of FIG. [Diagram 5] 5 is a schematic cross-sectional view of a disposable diaper according to a modified example of the embodiment, and is an enlarged view of a main part taken in the same position as in FIG. [Figure 6] 1A and 1B are enlarged plan views of moisture-permeable films used in the above-mentioned disposable diaper, where (A) shows an example of a non-uniformly stretched moisture-permeable film, and (B) shows an example of a uniformly stretched moisture-permeable film. [Figure 7] 2 is a graph showing an example of the pore size distribution of the moisture-permeable film, in which the horizontal axis represents pore size (μm) and the vertical axis represents pore volume (ml / g). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following embodiment, an example in which the absorbent article according to the present invention is configured as a pants-type disposable diaper is given. However, the absorbent article of the present invention is not limited thereto, and may be, for example, an open-type disposable diaper, a sanitary article, or the like.

[0011] [Overall composition of disposable diapers] 1 and 2 show a pants-type disposable diaper 1 as an absorbent article according to one embodiment of the present invention. The pants-type disposable diaper 1 will be referred to as diaper 1 hereinafter. The diaper 1 has a longitudinal direction X, a transverse direction Y, and a thickness direction Z. The longitudinal direction X extends from the wearer's abdomen through the crotch area to the back. The transverse direction Y is perpendicular to the longitudinal direction X and corresponds to the left-right direction of the wearer. The thickness direction Z is perpendicular to the longitudinal direction X and the transverse direction Y of the diaper 1. In this disclosure, "the inner side in the lateral direction Y" means the side in the lateral direction Y that is closer to the vertical center line CL (see Figure 2) that divides the diaper 1 in half in the lateral direction Y, and "the outer side in the lateral direction Y" means the side away from the vertical center line CL. In the present disclosure, a plan view means that each component is viewed from the thickness direction Z. In the present disclosure, the skin side of each component refers to the side that is located on the skin side of a wearer when wearing the disposable diaper. The non-skin side of each component refers to the clothing side that is located opposite to the skin side of a wearer when wearing the disposable diaper.

[0012] As shown in Figures 1 and 2, the diaper 1 has a waist opening 1W that is placed around the wearer's abdomen, and a pair of leg openings IL that are placed around the wearer's legs, and is placed around the wearer's waist and crotch area. The diaper 1 is divided into a ventral region A arranged on the ventral side of a wearer, a dorsal region B arranged on the dorsal side of the wearer, and a crotch region C arranged between the ventral region A and the dorsal region B and arranged in the crotch area of ​​the wearer. The ventral region A, the crotch region C, and the dorsal region B are arranged along the longitudinal direction X. 2 shows the flat developed form of the diaper 1, in which the elastic members of each portion are stretched and the diaper 1 is laid out flat to achieve the design dimensions without any effect of the elastic members. The flat development of the diaper 1 means that the side edge portion A1 of the abdominal region A and the side edge portion B1 of the dorsal region B are separated and laid out.

[0013] In this embodiment, the diaper 1 has a ventral exterior body 6A arranged in the ventral region A, a rear exterior body 6B arranged in the rear region B, and a crotch exterior body 6C arranged in the crotch region C. The ventral exterior body 6A and the rear exterior body 6B are each configured in a strip shape extending in the horizontal direction Y, and the crotch exterior body 6C is configured in a strip shape extending in the vertical direction X. The ventral exterior body 6A and the rear exterior body 6B are joined at their side edges A1, B1 in the horizontal direction Y to form a waist opening 1W. The ventral exterior body 6A and the rear exterior body 6B are provided with a plurality of elastic members 61 extending in the horizontal direction Y to form waist gathers. In addition, the horizontal direction Y side edges of the crotch exterior body 6C and the horizontal direction Y side portions of the ventral exterior body 6A and the rear exterior body 6B form leg openings 1L. An elastic member is disposed near the leg opening 1L to form a leg gather portion 7, which will be described later.

[0014] As shown in Fig. 3, the crotch region C of the diaper 1 further includes a top sheet 2, an absorbent 4, and a back sheet 3 in addition to the crotch exterior body 6C. The crotch region C has a configuration in which the crotch exterior body 6C, the back sheet 3, the absorbent 4, and the top sheet 2 are laminated in the thickness direction Z. These components are joined to each other by a joining means such as a hot melt adhesive. For example, Fig. 3 shows an example of the arrangement of joining parts H formed on the crotch exterior body 6C, the back sheet 3, etc.

[0015] The top sheet 2 forms the skin-facing surface of the diaper 1 and is placed so as to contact the wearer's skin. The top sheet 2 is liquid permeable and is made of, for example, a nonwoven fabric containing synthetic or natural fibers. As a material for the top sheet 2, any sheet material that can be used as a top sheet for an absorbent article can be used as appropriate.

[0016] The absorbent body 4 is disposed between the top sheet 2 and the back sheet 3. The absorbent body 4 absorbs moisture from the wearer's excrement, such as urine, from the surface on the top sheet 2 side, and diffuses the moisture inside to retain the moisture from the excrement. The absorbent body 4 has, for example, an absorbent core 40 and a core wrap sheet 41. The absorbent core 40 is mainly composed of an absorbent material capable of retaining moisture. Specifically, the absorbent core 40 has a structure in which a hydrophilic fiber stack is supported with an absorbent polymer, or a structure made of only a water-absorbent polymer, or the like. The core wrap sheet 41 covers the absorbent core 40 and has a function of, for example, maintaining the shape of the absorbent core 40. The core wrap sheet 41 is formed of, for example, a thin, soft paper such as tissue paper or a liquid-permeable nonwoven fabric. The absorbent body 4 does not necessarily have to have a core wrap sheet 41.

[0017] The back sheet 3 is disposed on the non-skin side of the absorbent body 4. The back sheet 3 is preferably leak-proof, and is made of, for example, a sheet material having functions such as poor liquid permeability and water repellency. Examples of such sheet materials include a sheet material made of a thermoplastic resin film, or a laminate of such a film and a nonwoven fabric. In this embodiment, the back sheet 3 is made of a moisture-permeable film 30, which will be described later. In FIG. 2, the area where the back sheet 3 (moisture-permeable film 30) is disposed is shown in gray.

[0018] The crotch outer body 6C is disposed on the non-skin side of the back sheet 3. In this embodiment, the crotch outer body 6C is made of a nonwoven fabric from the viewpoint of realizing moisture permeability, breathability, and a good texture. Furthermore, from the viewpoint of imparting leak prevention, the crotch outer body 6C preferably has functions such as liquid impermeability and water repellency. Note that the ventral side outer body 6A and the dorsal side outer body 6B are also preferably made of a nonwoven fabric like the crotch outer body 6C.

[0019] Furthermore, the diaper 1 preferably includes a pair of side sheets 5. The pair of side sheets 5 are arranged on the skin side of the lateral Y side portions of the top sheet 2, forming a three-dimensional gather 50. Specifically, the non-skin side end of the side sheet 5 is joined to a non-skin side member (the crotch outer body 6C in the example of FIG. 3) by adhesive, heat sealing, or the like. On the other hand, the skin side end of the side sheet 5 is configured as a free end that is not joined to other members, and a thread-like or strip-like elastic member 51 is arranged thereon. The elastic member 51 extends in the longitudinal direction X and is attached to the side sheet 5 in an elongated state. As a result, when worn, the skin side end of the side sheet 5 stands up against the skin side due to contraction of the elastic member 51, forming the three-dimensional gather 50. The side sheet 5 is made of a sheet material having functions such as poor liquid permeability and water repellency, and as an example, is made of a nonwoven fabric having these functions.

[0020] [Leg gather configuration] The diaper 1 has an elastic leg gather portion 7 arranged along the leg opening 1L. The leg gather portion 7 may be arranged along the entire leg opening 1L, or may be arranged along a part of the leg opening 1L as shown in FIG. 2. As shown in FIG. 3, the leg gather portion 7 includes, for example, a crotch outer body 6C and a back sheet 3 arranged on the outer side of the absorbent body 4 in the lateral direction Y. The leg gather portion 7 is preferably configured to prevent leakage of excrement while suppressing stuffiness and skin trouble caused by tightening by an elastic member. The detailed configuration of the leg gather portion 7 will be described below. Note that FIG. 3 and FIG. 4 described later show an enlarged view of one leg gather portion 7, but the other leg gather portion 7 is configured in the same manner.

[0021] As shown in FIG. 4, the leg gathers 7 have a first nonwoven fabric layer 71 , a second nonwoven fabric layer 72 , a film layer 73 , an outer elasticated region 74 , and an inner elasticated region 75 . The first nonwoven fabric layer 71 is a layer made of nonwoven fabric arranged on the non-skin side. In this embodiment, the first nonwoven fabric layer 71 is configured as the crotch outer body 6C. The first nonwoven fabric layer 71 configures the outer surface in the crotch region C. The second nonwoven fabric layer 72 is a layer made of nonwoven fabric arranged on the skin side. As shown in Fig. 3, the second nonwoven fabric layer 72 may be made of the same nonwoven fabric as the first nonwoven fabric layer 71. In this case, the second nonwoven fabric layer 72 may be made of a portion of the crotch outer body 6C that is folded back to the skin side.

[0022] The film layer 73 is disposed between the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72, and is constituted by a moisture-permeable film 30. In this embodiment, the moisture-permeable film 30 is a film material that constitutes the backsheet 3. That is, the film layer 73 in this embodiment is constituted by a side portion of the backsheet 3 in the lateral direction Y.

[0023] The moisture permeable film 30 constituting the film layer 73 has the property of releasing water vapor derived from excrement, sweat, etc. to the outside to suppress stuffiness. "Moisture permeability" means the property of water vapor diffusing from a high humidity side to a low humidity side according to the second law of thermodynamics without air movement. Moisture permeability can be evaluated by the value of moisture permeability measured based on JIS Z0208, for example. The moisture permeability value of the moisture permeable film 30 is, for example, 0.5 g / 100 cm. 2 ·hr or more. In order to achieve such moisture permeability, the moisture permeable film 30 preferably contains a plurality of micropores. Note that a detailed method for measuring the moisture permeability and a detailed configuration of the moisture permeable film 30 will be described later.

[0024] The outer elastic region 74 is a region including an outer elastic member 76. The outer elastic region 74 is arranged, for example, on the outer side of the film layer 73 in the lateral direction Y so as not to overlap with the film layer 73 in the thickness direction Z. The outer elastic member 76 is arranged between the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72 and extends in the longitudinal direction X. The outer elastic member 76 is formed of an elongated elastic member such as a thread-like or strip-like rubber. In this case, "extending in the longitudinal direction X" includes not only a mode strictly parallel to the longitudinal direction X, but also a mode extending in the longitudinal direction X as a whole. The outer elastic region 74 includes at least one outer elastic member 76, and more preferably includes a plurality of outer elastic members 76 from the viewpoint of improving fit.

[0025] The inner elastic region 75 is a region including the inner elastic member 77. The inner elastic region 75 is arranged so as to overlap the film layer 73 in the thickness direction Z. "Overlapping the film layer 73 in the thickness direction Z" means overlapping the film layer 73 in the thickness direction Z in a plan view of the diaper 1 in a flatly developed form seen from the thickness direction Z. The inner elastic member 77 is arranged between the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72 and extends in the longitudinal direction X. The inner elastic member 77 is formed of an elongated elastic member such as a thread-like or strip-like rubber. The inner elastic member 77 may be arranged on the non-skin side of the film layer 73 as illustrated in FIG. 4, or may be arranged on the skin side of the film layer 73 as illustrated in FIG. 5. The inner elastic region 75 includes at least one inner elastic member 77, and preferably includes a plurality of inner elastic members 77 from the viewpoint of improving fit.

[0026] Here, the leg gathers 7 having the above-mentioned configuration have a film layer 73 that is more leak-proof than nonwoven fabric, and have two stretchable regions, the outer stretchable region 74 and the inner stretchable region 75, thereby effectively preventing leakage of excrement. On the other hand, although the moisture-permeable film 30 constituting the film layer 73 has moisture permeability, it tends to have lower moisture permeability and air permeability than nonwoven fabric, so that water vapor derived from excrement, sweat, etc. is trapped inside the leg gathers 7, making it prone to stuffiness. Therefore, in this embodiment, from the viewpoint of increasing air permeability and moisture permeability while maintaining leak-proofness, the leg gathers 7 have the following configuration.

[0027] The film layer 73 has an end region 78 formed at an end in the lateral direction Y. In the end region 78, a side end 30s in the lateral direction Y of the moisture-permeable film 30 is turned up toward the skin side. The side end 30s means an end on the lateral direction Y side when the moisture-permeable film 30 is stretched out in a plane. "The side end 30s is turned up toward the skin side" means that the side end 30s is not joined to other parts of the moisture-permeable film 30 and is folded back toward the skin side or stands up toward the skin side.

[0028] The end region 78 is disposed between the outer stretched region 74 and the inner stretched region 75. In other words, the end region 78 is located inside the outer stretched region 74 in the lateral direction Y, and outside the inner stretched region 75 in the lateral direction Y. Therefore, the end region 78 does not overlap with either the outer elastic member 76 or the inner elastic member 77 of the leg gathers 7 in the thickness direction Z.

[0029] Furthermore, in the leg gathers 7, the wearing pressure of the inner stretchable region 75 is lower than that of the outer stretchable region 74. The wearing pressure means the contact pressure with the wearer, and is measured, for example, as follows. The wearing pressure of the inner stretchable region 75 and the outer stretchable region 74 can be adjusted, for example, by the fineness and elongation rate of the elastic member. (Method of measuring the wearing pressure) The leg opening 1L (leg gather portion 7) of the diaper 1 is attached to a cylinder with a circumference of 320 mm, and an air pack with a diameter of 8 mm is inserted between the stretchable region to be measured and the cylinder. Specifically, the center of the air pack is set at the center in the vertical direction X of the diaper 1 (on the line that bisects the diaper 1 in the vertical direction X, located in the crotch region C) and at the center in the horizontal direction Y of the stretchable region to be measured. For example, if each stretchable region includes multiple elastic members, the center of the air pack is set at the center in the horizontal direction Y of each stretchable region. Next, the wearing pressure of each stretchable region is measured by measuring the contact pressure applied to the air pack using a wearing pressure measuring device (contact pressure measuring device (AMI3037-2) manufactured by AMI Techno Co., Ltd.). The wearing pressure of each stretchable region is the average value of the measurements (two points) on both the left and right sides.

[0030] Specifically, the wearing pressure of the inner stretchable region 75 is preferably 0.1 kPa or more, more preferably 0.15 kPa or more, and is preferably 0.60 kPa or less, more preferably 0.50 kPa or less. The application pressure of the outer elasticated region 74 is preferably 0.15 kPa or more, more preferably 0.20 kPa or more, and is preferably 1.00 kPa or less, more preferably 0.80 kPa or less. The ratio of the wearing pressure of the inner elasticated region 75 to the wearing pressure of the outer elasticated region 74 is preferably 20% or more, more preferably 30% or more, and is preferably 90% or less, more preferably 80% or less.

[0031] [Effects] According to the leg gathers 7 having the above-mentioned configuration, the film layer 73, the outer stretchable region 74, and the inner stretchable region 75 can effectively suppress leakage of excrement. Furthermore, in the leg gathers 7, the end region 78 of the film layer 73 is located between the outer stretchable region 74 and the inner stretchable region 75, and the side end 30s is rolled up. With the end region 78 having such a configuration, a space is formed between the rolled-up skin-side moisture permeable film 30 in the end region 78 and the non-skin-side moisture permeable film 30, and this space can function as an air passage. As a result, an air passage is formed in the region with less tightening between the outer stretchable region 74 and the inner stretchable region 75, and the breathability in the leg gathers 7 can be improved. In addition, the moisture permeable film 30 can be released to the outside. Therefore, with the above-mentioned configuration, the moist air in the leg gathers 7 can be caused to flow to the end region 78, and the air can be transmitted through the film layer 73. As a result, stuffiness in the leg gathers 7 can be suppressed. In addition, the inner stretchable region 75 overlapping with the film layer 73 is configured to have a lower wearing pressure than the outer stretchable region 74 not overlapping with the film layer 73. This reduces tightness in the region overlapping with the film layer 73, and can prevent stuffiness and associated skin troubles such as redness and rashes. On the other hand, by sufficiently increasing the wearing pressure of the outer stretchable region 74, leakage of body waste from the leg gathers 7 can be more reliably prevented. As described above, the diaper 1 (absorbent article) having the above-mentioned configuration can improve the fit and leak-proofness around the legs, while preventing stuffiness and skin troubles.

[0032] [Example of the structure for bonding the film layer and the nonwoven fabric layer] From the viewpoint of improving the air permeability and moisture permeability in the leg gathers 7, it is preferable that the film layer 73 is discontinuously joined to the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72. That is, the film layer 73 has a joint H1 that joins the first nonwoven fabric layer 71 on the skin side and a joint H2 that joins the second nonwoven fabric layer 72 on the non-skin side, and it is preferable that the joints H1 and H2 are arranged alternately with non-joints. The joints H1 and H2 are made of, for example, an adhesive such as a hot melt adhesive or a pressure sensitive adhesive. In this case, the joints H1 and H2 have, for example, a discontinuous coating pattern. Examples of such coating patterns include a stripe shape, a spiral shape, a summit shape, an omega shape, and a curtain shape. In the non-joints between the adjacent joints H1 and H2, in addition to ensuring a space for air flow, the micropores of the moisture permeable film 30 are not blocked, so that the moisture permeability and breathability of the film layer 73 can be maintained. In this disclosure, the joints that join members, including the joints H1 and H2, are collectively referred to as "joints H".

[0033] In this case, it is preferable that the end region 78 is not joined to the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72. In other words, it is preferable that the joints H1, H2 are not arranged in the end region 78. This makes it easier to form an air passage without fixing the end region 78. Furthermore, by not joining the end region 78 to the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72, clogging of the micropores in the end region 78 is suppressed. This ensures the moisture permeability of the end region 78 and promotes the release of moist air to the outside.

[0034] In addition, from the viewpoint of reliably obtaining breathability and moisture permeability in the end region 78, it is preferable to ensure a sufficient width of the end side non-joined portion 73n including the end region 78. Specifically, the film layer 73 has an end side non-joined portion 73n including the end region 78 and not joined to the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72, and the width D1 in the lateral direction Y of the end side non-joined portion 73n is preferably 2 mm or more. The width D1 of the end side non-joined portion 73n is the distance in the lateral direction Y from the outer edge portion 73s located on the outer edge of the film layer 73 in the lateral direction Y in a plan view to the joints H1 and H2 that are closest to the outer edge portion 73s in the lateral direction Y. Note that, when the width D1 is not constant along the vertical direction X, the minimum width of the widths in the lateral direction Y from the outer edge portion 73s to the joints H1 or H2 that are closest to the outer edge portion 73s in the lateral direction Y is set as the width D1. By setting the width D1 to 2 mm or more, the width of the end region 78 having the rolled-up configuration can be sufficiently ensured, and the end region 78 can effectively function as an air passage.

[0035] Furthermore, from the viewpoint of improving breathability, the width D1 is more preferably 2.5 mm or more, and further preferably 3 mm or more. Moreover, from the viewpoint of suppressing twisting or shifting of the film layer 73 between the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72, the width D1 is preferably 10 mm or less, and more preferably 8 mm or less.

[0036] [Example of coloring section configuration] As shown in FIG. 5, the film layer 73 preferably includes a colored portion 79 disposed on the inner side of the end region 78 in the lateral direction Y. That is, the colored portion 79 is disposed in a region of the film layer 73 other than the end region 78. The colored portion 79 is formed of a colorant such as ink, and is, for example, a portion where applied ink has solidified. The shape of the colored portion 79 is not particularly limited, and may include a pattern, letters, and the like. The colored portion 79 is preferably disposed on the non-skin side of the film layer 73. This allows the colored portion 79 to be visible through the first nonwoven fabric layer 71 (the crotch outer body 6C), and can provide an impression of and information about the product to a caregiver or a wearer who changes the diaper 1.

[0037] The colored portion 79 is formed on the film layer 73, and therefore covers the micropores. This can also suppress the permeation of excrement from the film layer 73. Furthermore, the colored portion 79 is preferably hydrophobic, and is preferably formed of, for example, an oil-based ink. This can more effectively suppress the permeation of moisture through the colored portion 79, and can effectively improve the leakproofness of the film layer 73. In addition, the colored portion 79 makes it difficult for excrement absorbed in the absorber 4 to be seen through the surface on the first nonwoven fabric layer 71 side. This can suppress the misidentification of excrement leakage when the outer surface 1b is visually confirmed.

[0038] On the other hand, by not disposing the colored portion 79 in the end region 78, it is possible to prevent the fine pores in the end region 78 from being blocked by a coloring agent. This makes it possible to maintain the breathability and moisture permeability of the end region 78. Therefore, with the above-mentioned configuration, it is possible to obtain the leg gather portion 7 having high breathability and moisture permeability while preventing leakage of body excrement and misidentification thereof.

[0039] In addition, from the viewpoint of more reliably preventing misidentification of excrement leakage, it is preferable that the colored portion 79 contains a color represented by at least one hue of BG (cyan), B (blue), or BP (purple) in the Munsell color system. Specifically, it is preferable that the colored portion 79 contains a color represented by a hue from 2.5BG through B to 10BP in the Munsell color system. The color represented in this way has a complementary color relationship or a hue close to the hue of urine (e.g., yellow) or feces (e.g., brown). By the colored portion 79 containing a color of a hue completely different from that of urine or feces, the excrement absorbed in the absorbent body 4 becomes even less visible through the outer surface on the non-skin side, and the misidentification of excrement leakage when the outer surface is visually confirmed can be more effectively suppressed. Furthermore, by the colored portion 79 being a hue completely different from that of excrement, it becomes difficult to mistake the colored portion 79 for excrement leakage. Therefore, the above-mentioned configuration can more effectively prevent the misidentification of visual leakage of excrement, thereby enhancing the reliability and security of the diaper 1. The hue on the film layer 73 can be measured using a commercially available colorimeter (e.g., a color difference meter "CR-400" manufactured by Konica Minolta Sensing Inc., a spectrophotometer "CM-700d", etc.).

[0040] [Example of end area placement] Moreover, from the viewpoint of effectively preventing stuffiness and skin troubles around the legs, it is preferable that the end regions 78 have a sufficient length. From this viewpoint, as shown in FIG. 2, when the diaper 1 is laid out flat with the ventral region A and the dorsal region B separated, it is preferable that the end region 78 extends in the longitudinal direction X beyond the longitudinal end Le of the leg opening 1L toward the waist opening 1W.

[0041] The longitudinal end Le of the leg opening 1L is the portion of the leg opening 1L closest to the waist in the longitudinal direction X in the flat developed state as shown in Fig. 2. In other words, the longitudinal end Le coincides with the leg-side ends of the side edges A1, B1. "The end region 78 extends in the longitudinal direction X further toward the waist opening 1W than the longitudinal end Le of the leg opening 1L" means that in the flat developed state of the diaper 1, the distance in the longitudinal direction X from the waist opening 1W to the end region 78 is shorter than the distance from the waist opening 1W to the longitudinal end Le.

[0042] With the above-mentioned configuration, the end region 78 can be disposed over a wide range around the legs, thereby improving breathability in the leg gathers 7 over a wide range, and more effectively preventing stuffiness and skin troubles in the leg gathers 7.

[0043] 2, it is preferable that the end region 78 extends further toward the waist opening 1W in the longitudinal direction X than the outer elastic member 76 and the inner elastic member 77. This allows the end region 78 to be disposed over almost the entire area of ​​the leg gathers 7, thereby more effectively improving the breathability of the leg gathers 7.

[0044] [Example of inner and outer stretchable regions] In the leg gather portion 7, since the inner stretchable region 75 is located closer to the absorbent body 4 than the outer stretchable region 74, it is preferable that the inner stretchable region 75 is configured to be able to suppress leakage of body exudates while suppressing an increase in wearing pressure. 4, it is preferable that the width D2 of the inner stretchable region 75 in the lateral direction Y is greater than the width D3 of the outer stretchable region 74 in the lateral direction Y. This allows the inner stretchable region 75 to fit the wearer over a wide range while preventing the inner stretchable region 75 from tightening. This effectively prevents excrement from leaking from the inner stretchable region 75.

[0045] The width D2 is the dimension from the inner end of the inner elastic member 77 located at the innermost side of the inner elastic region 75 in the lateral direction Y to the outer end of the inner elastic member 77 located at the outermost side of the inner elastic region 75 in the lateral direction Y. Similarly, the width D3 is the dimension from the inner end of the outer elastic member 76 located at the innermost side of the outer elastic region 74 in the lateral direction Y to the outer end of the outer elastic member 76 located at the outermost side of the outer elastic region 74 in the lateral direction Y. If the inner elastic region 75 and / or the outer elastic region 74 include one elastic member, the width of the elastic member in the lateral direction Y is defined as the width of each elastic region. If these widths are not constant along the vertical direction X, the minimum width of the inner elastic region 75 is defined as width D2, and the maximum width of the outer elastic region 74 is defined as width D3.

[0046] In order to achieve the above configuration, it is preferable that the number of inner elastic members 77 included in the inner stretchable region 75 is greater than the number of outer elastic members 76 included in the outer stretchable region 74. By increasing the number of inner elastic members 77, the width D2 can be increased, and the leakproofness of the inner stretchable region 75 can be improved.

[0047] Specifically, the number of inner elastic members 77 in the inner stretchable region 75 is preferably three or more, and preferably seven or less, and more preferably six or less. The number of outer elastic members 76 in the outer stretchable region 74 is one or more, preferably two or more, and is preferably five or less, more preferably four or less.

[0048] On the other hand, from the viewpoint of suppressing an increase in the fitting pressure of the inner elastic region 75, it is preferable that the fitting pressure of each inner elastic member 77 is low. For this reason, it is preferable that the fitting pressure of the outer elastic member 76 is higher than the maximum fitting pressure of each of the multiple inner elastic members 77. For example, when the outer elastic region 74 includes multiple outer elastic members 76, it is preferable that the minimum fitting pressure of each of the outer elastic members 76 is higher than the maximum fitting pressure of each of the multiple inner elastic members 77. This makes it possible to relatively easily make the fitting pressure of the inner elastic region 75 lower than the fitting pressure of the outer elastic region 74.

[0049] Specifically, the fitting pressure of the inner elastic member 77 is preferably 0.05 kPa or more, more preferably 0.1 kPa or more, and preferably 0.6 kPa or less, and more preferably 0.5 kPa or less. The fitting pressure of the outer elastic member 76 is preferably 0.15 kPa or more, more preferably 0.2 kPa or more, and preferably 1.0 kPa or less, and more preferably 0.8 kPa or less. The fitting pressure of each elastic member can be measured based on the above-mentioned "Method of measuring fitting pressure." In this case, the center of the air pack of the fitting pressure measuring device is placed on the elastic member to be measured, and the fitting pressure of each elastic member can be measured by the method described in the "Method of measuring fitting pressure."

[0050] The mounting pressure of each elastic member can be adjusted by the fineness, elongation rate, etc. of the elastic member. For example, when the elastic member is fibrous, such as rubber thread, the higher the fineness of the elastic member, the higher the mounting pressure of the elastic member. The elongation rate of the elastic member means the ratio of the length of the elastic member stretched in the expanded and stretched state of the diaper 1 to the length of the elastic member at its natural length when removed from the diaper 1. In other words, an elastic member with a high elongation rate is mounted on the diaper 1 in a strongly stretched state during the manufacturing process. For this reason, an elastic member with a high elongation rate has a large elastic force when worn, and therefore a high mounting pressure.

[0051] Furthermore, it is preferable that the fitting pressure of each of the inner elastic member 77 and the outer elastic member 76 is set to increase in sequence along the lateral direction Y from the inner elastic member 77 arranged at the innermost position in the lateral direction Y to the outer elastic member 76 arranged at the outermost position in the lateral direction Y. In other words, it is preferable that the fitting pressure of the inner elastic member 77 and the outer elastic member 76 increases in sequence from the inner side to the outer side in the lateral direction Y. This allows the fitting pressure of the leg gathers 7 to be gradually increased toward the outer side in the lateral direction Y, improving the fit of the leg gathers 7, and the fitting pressure of the leg gathers 7 to be gradually decreased toward the inner side in the lateral direction Y, suppressing a feeling of tightness in the portion overlapping with the film layer 73. As a result, it is possible to improve both the leakproofness and breathability of the leg gathers 7.

[0052] [Example of moisture permeable film composition] Below, there will be described a preferred example of the configuration of the moisture-permeable film 30 that constitutes the film layer 73. When the film layer 73 is constituted by the back sheet 3, it is preferred that the back sheet 3 has the following configuration.

[0053] The moisture-permeable film 30 preferably has a plurality of micropores (microvoids). The moisture-permeable film is, for example, made of a resin film and has a single-layer structure or a laminated structure. The moisture-permeable film is obtained, for example, by melt-kneading a hydrophobic thermoplastic resin (such as a polyolefin resin) and inorganic fine particles (such as calcium carbonate) that are incompatible with the thermoplastic resin to form a film, and then uniaxially or biaxially stretching the film. For example, the inflation method, the T-die method, etc. can be used to form the film. In the moisture-permeable film thus manufactured, a large number of micropores are formed starting from the interface between the thermoplastic resin and the inorganic fine particles by stretching.

[0054] 6(A) and (B), in the moisture-permeable film 30, a force is applied to inorganic fine particles 36 such as calcium carbonate particles along the stretching direction E during stretching, and the inorganic fine particles 36 are dragged in the stretching direction E to form micropores 37. Therefore, the moisture-permeable film 30 includes inorganic fine particles 36 and micropores 37 adjacent to the inorganic fine particles 36.

[0055] In the moisture-permeable film 30, for example, it is preferable that the pore volume per unit mass of the micropores 37 having a pore diameter in the range of 0.06 μm to 0.16 μm is larger than the pore volume per unit mass of the micropores 37 having a pore diameter in the range of 2.5 μm to 3.5 μm. This allows a large number of micropores 37 having small pore diameters in the range of 0.06 μm to 0.16 μm to be formed, thereby increasing the permeability of water vapor (moisture). On the other hand, the number of micropores 37 having a pore diameter in the range of 2.5 μm to 3.5 μm can be regulated, and moisture leakage can be more reliably prevented. Therefore, a moisture-permeable film 30 with high leak-proof properties can be obtained.

[0056] (Method of measuring pore volume) The pore volume can be measured by the following method in accordance with the mercury intrusion method specified in JIS R 1655. First, a measurement sample of a predetermined size (for example, 10 mm x 10 mm) is cut out from the moisture-permeable film 30 to be measured. This measurement sample is set in a mercury porosimeter (for example, "Autopore IV9520" manufactured by Shimadzu Corporation), and the pore size distribution in the pore diameter range of 0.06 μm to 3.5 μm is measured. Based on the obtained pore size distribution (see FIG. 7), the cumulative pore volume in the pore diameter range of 0.06 μm to 0.16 μm and the cumulative pore volume in the pore diameter range of 2.5 μm to 3.5 μm are measured. If the cumulative pore volume in the pore diameter range of 0.06 μm or more and 0.16 μm or less is greater than the cumulative pore volume in the pore diameter range of 2.5 μm or more and 3.5 μm or less, it is determined that "the pore volume per unit mass of micropores having pore diameters in the range of 0.06 μm or more and 0.16 μm or less is greater than the pore volume per unit mass of micropores having pore diameters in the range of 2.5 μm or more and 3.5 μm or less."

[0057] As such, a method for forming a large number of small micropores 37 includes, for example, a method of uniformly stretching the moisture-permeable film 30. As shown in FIG. 6(A), when the moisture-permeable film 30 is stretched non-uniformly, a region that is not sufficiently stretched is generated in a part of the moisture-permeable film 30, and a portion where the small inorganic fine particles 36 cannot be sufficiently opened (unopened portion 38 shown by a thick line) may be formed. Furthermore, in the area of ​​the moisture-permeable film 30 where the stretching force is large, the inorganic fine particles 36 are largely dragged to form large micropores 37, and in the area where the stretching force is small, the inorganic fine particles 36 are not dragged so much to form small micropores 37. For this reason, the size of the micropores 37 may not be correlated with the size of the inorganic fine particles 36.

[0058] In contrast, as shown in Fig. 6(B), when the moisture-permeable film 30 is stretched uniformly, a sufficient stretching force is applied to the small inorganic fine particles 36 as well. As a result, the portion that was an unopened portion 38 in the example of Fig. 6(A) becomes a sufficiently opened micropore 37 (portion shown by a thick line) in Fig. 6(B), and the number of small micropores 37 can be increased. Furthermore, when the moisture-permeable film 30 is stretched uniformly within its plane, micropores 37 corresponding to the size of the inorganic fine particles 36 are easily formed, so that there is a tendency for the size of the micropores 37 and the size of the inorganic fine particles 36 to be positively correlated.

[0059] As an index of whether the moisture-permeable film 30 is uniformly stretched, the moisture-permeable film 30 has a thickness of 0.01 μm or less in a plan view seen from the thickness direction Z. 2 More than 0.5μm 2 The pore diameter of the micropores 37 arranged adjacent to the inorganic fine particles 36 having a size of 1.0 μm or less is 1.0 μm. 2 More than 1.5μm 2It is preferable that the diameter of the micropores 37 is smaller than the diameter of the micropores 37 arranged adjacent to the inorganic fine particles 36 having a size of the following size: In the above configuration, since the moisture-permeable film 30 is uniformly stretched, the number of small micropores 37 adjacent to the small inorganic fine particles 36 can be increased, and a moisture-permeable film 30 having high moisture permeability and leak prevention properties can be obtained.

[0060] (Method of measuring size of inorganic fine particles and pore diameter of fine pores) An evaluation sample of a predetermined size (for example, 10 mm x 10 mm) is cut out from the moisture-permeable film 30. The cut-out evaluation sample is fixed in place in a standard manner and imaged at 1000 times magnification using a scanning electron microscope (SEM). From one image, image analysis techniques are used to extract the outlines of the portions corresponding to the inorganic microparticles and the adjacent micropores. The size of the area corresponding to the extracted inorganic microparticles and the size of the area corresponding to the adjacent micropores are measured. The pore diameter of the micropores is obtained by calculating the circle equivalent diameter from the size (area) of the area corresponding to the extracted micropores. Images of 100 locations are captured from one sheet of moisture-permeable film 30, and the images are analyzed to obtain an average diameter of 0.01 μm. 2 More than 0.5μm 2 The average pore size of the micropores adjacent to inorganic fine particles having a size of 1.0 μm or less and 2 More than 1.5μm 2 The average pore diameter of the micropores disposed adjacent to the inorganic fine particles having the following sizes is calculated.

[0061] As described above, when the micropores 37 are formed according to the size of the inorganic fine particles 36, the pore diameter of the micropores 37 can be controlled by controlling the size distribution of the inorganic fine particles 36. From this viewpoint, in the moisture-permeable film 30, the pore diameter of the micropores 37 can be controlled within a range of 0.01 μm in plan view as seen from the thickness direction Z. 2 More than 0.5μm 2 The number of particles per unit area of ​​inorganic fine particles 36 with a size of 0.5 μm or less is 2 2.0μm or more 2 The number of particles per unit area of ​​inorganic fine particles 36 having a size of less than 2.0 μm 2The number of particles per unit area of ​​the above inorganic fine particles 36 is 0.5 μm 2 2.0μm or more 2 It is preferable that the number of particles per unit area is smaller than the number of inorganic fine particles 36 having a size of less than 1 mm. With the above-mentioned configuration, a large number of minute pores 37 can be formed, and a moisture-permeable film 30 that satisfies both moisture permeability and leak prevention properties can be obtained.

[0062] Moreover, it is preferable that the moisture-permeable film 30 is uniformly stretched as described above so as to be thin while maintaining leak-proofness. From this viewpoint, the basis weight of the moisture-permeable film 30 is preferably 8 g / cm 2 More preferably, 10 g / cm 2 More preferably, it is 20 g / cm 2 Less than or equal to 18 g / cm 2 The following is the result.

[0063] The moisture permeability of the moisture-permeable film 30 is preferably 2.7 g / 100 cm 2 h or more, preferably 3 g / 100 cm 2 h or more, preferably 12 g / 100 cm 2 h or less, preferably 10 g / 100 cm 2 This allows the moisture-permeable film 30 to have sufficiently high moisture permeability, making it possible to provide a comfortable diaper 1 with less stuffiness, while also ensuring the leak-proofing properties of the moisture-permeable film 30.

[0064] (Method of measuring moisture permeability) The moisture permeability can be measured in accordance with JIS Z0208. First, a cup containing calcium chloride as a moisture absorbent is prepared, and the cup is placed so that it is horizontal. The mass of calcium chloride before the test is measured in advance. The moisture-permeable film to be measured is cut into a circle with a diameter 10 mm larger than the inner diameter of the cup to prepare a test piece, and the test piece is placed on the upper edge of the cup and adjusted so that the periphery of the test piece is located on a concentric circle of the upper edge of the cup. A ring-shaped packing is prepared along the upper edge of the cup, and the packing is pressed so that the periphery of the test piece is in close contact with the upper edge of the cup. Furthermore, a ring-shaped weight is placed on top of it, and a test specimen is prepared in which the moisture-permeable film is fixed to the upper edge of the cup. This test specimen is left for 1 hour at a temperature of 30°C ± 0.5°C and a humidity of 90 ± 2% RH, and the mass of calcium chloride after the test is measured. The value obtained by subtracting the mass of calcium chloride before the test from the mass of calcium chloride after the test is calculated, and this is used as the water vapor transmission surface of the test specimen for 100 cm. 2 The moisture permeability is calculated by converting it into a permeability value.

[0065] [Example of nonwoven fabric layer configuration] Examples of the nonwoven fabric constituting the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72, i.e., the nonwoven fabric constituting the crotch outer body 6C, include air-through nonwoven fabric, spunbond nonwoven fabric, and spunbond-meltblown-spunbond (SMS) nonwoven fabric, and one of these may be used alone or two or more may be used in combination. From the viewpoint of increasing hydrophobicity and enhancing the leakproofing effect, such nonwoven fabrics preferably contain hydrophobic synthetic fibers, in particular hydrophobic thermoplastic fibers.

[0066] The crotch outer body 6C may have a laminated structure of multiple sheet materials. That is, the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72 may each have a laminated structure. In this case, it is preferable that each sheet material is discontinuously bonded. This allows each sheet material to be integrated to form the crotch outer body 6C, and by forming non-bonded parts between these sheet materials, the surface on the non-skin side can be made soft to the touch. The ventral outer body 6A and the dorsal outer body 6B may also use the nonwoven fabrics listed above and may have a laminated structure of multiple sheet materials.

[0067] [Other embodiments] Although an embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0068] In the above embodiment, the film layer 73 included in the leg gather portion 7 is configured of the moisture-permeable film 30 that configures the back sheet 3, but is not limited to this. For example, the moisture-permeable film that configures the film layer 73 may be a film material different from that of the back sheet.

[0069] In the above embodiment, the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72 are described as being made of the same nonwoven fabric or nonwoven fabric laminate (crotch outer body 6C), but are not limited thereto. For example, the first nonwoven fabric layer 71 and the second nonwoven fabric layer 72 may be made of different nonwoven fabrics or nonwoven fabric laminates that are separated from each other.

[0070] In the above embodiment, the diaper 1 (absorbent article) has been described as having a ventral exterior body 6A, a rear exterior body 6B, and a crotch exterior body 6C, which are divided into a ventral region A, a rear region B, and a crotch region C, but is not limited thereto. For example, one exterior body may be formed continuously across the ventral region A, the rear region B, and the crotch region C.

[0071] The absorbent article according to the present invention may be any absorbent article having an exterior body, and may be, in addition to pants-type disposable diapers, flat-type disposable diapers, sanitary articles (for example, pants-type sanitary napkins), and the like. [Explanation of symbols]

[0072] 1...Absorbent articles (disposable diapers) 1L…Leg opening 1W…Waist opening 2. Top sheet 3. Back seat 30...Breathable film 4…Absorbent 7…Leg gathers 71...First nonwoven fabric layer 72…Second nonwoven fabric layer 73...Film layer 74...Outer stretch area 75…Inner stretch area 76...Outer elastic member 77...Inner elastic member 78...End area

Claims

1. An absorbent article comprising a waist opening arranged around the abdomen of a wearer and a pair of leg openings arranged around the legs of the wearer, and having a vertical direction extending from the abdomen side of the wearer through a crotch area to the back side, a horizontal direction perpendicular to the vertical direction and corresponding to the left-right direction of the wearer, and a thickness direction perpendicular to the vertical direction and the horizontal direction, The absorbent article comprises: further comprising elastic leg gathers disposed along the leg openings; The leg gather portion is a first nonwoven fabric layer disposed on the non-skin side; a second nonwoven fabric layer disposed on the skin side and facing the first nonwoven fabric layer in the thickness direction; a film layer disposed between the first nonwoven fabric layer and the second nonwoven fabric layer and made of a moisture-permeable film; an outer elastic region including an outer elastic member disposed between the first nonwoven fabric layer and the second nonwoven fabric layer and extending in the longitudinal direction; an inner elastic region disposed laterally inward of the outer elastic region in the transverse direction, the inner elastic region including an inner elastic member disposed between the first nonwoven fabric layer and the second nonwoven fabric layer and extending in the longitudinal direction; The film layer is The moisture-permeable film has a side edge in the lateral direction that has an end region turned toward the skin side, the end region is disposed between the outer elastic region and the inner elastic region; The wearing pressure of the inner elastic region is lower than the wearing pressure of the outer elastic region. Absorbent articles.

2. the film layer is discontinuously bonded to the first nonwoven fabric layer and the second nonwoven fabric layer; The end regions are not joined to the first nonwoven fabric layer and the second nonwoven fabric layer. The absorbent article of claim 1.

3. The film layer is the end region includes an end-side non-bonded portion that is not bonded to the first nonwoven fabric layer and the second nonwoven fabric layer, The width of the end-side non-jointed portion in the lateral direction is 2 mm or more. The absorbent article of claim 2.

4. The film layer is a colored portion disposed laterally inward of the end region The absorbent article according to claim 1 or 2.

5. The colored portion includes a color represented by at least one hue of BG (cyan), B (blue), or BP (purple) in the Munsell color system. The absorbent article of claim 4.

6. The absorbent article further comprises: a ventral region disposed on the ventral side of the wearer; a dorsal region disposed on the dorsal side of the wearer; a crotch region disposed between the ventral region and the dorsal region, The end region is When the abdominal region and the back region are separated and the absorbent article is spread out in a plane, the longitudinal edge of the leg opening extends to the waist opening side in the longitudinal direction. The absorbent article according to claim 1 or 2.

7. The width of the inner elastic region in the lateral direction is greater than the width of the outer elastic region in the lateral direction. The absorbent article according to claim 1 or 2.

8. The number of the inner elastic members included in the inner elastic region is greater than the number of the outer elastic members included in the outer elastic region. The absorbent article of claim 7.

9. The inner elastic region includes a plurality of inner elastic members. The fitting pressure of the outer elastic member is higher than the maximum fitting pressure of the plurality of inner elastic members. The absorbent article of claim 7.

10. The fitting pressure of each of the inner elastic member and the outer elastic member is set to increase in the order along the lateral direction from the inner elastic member arranged most inward in the lateral direction to the outer elastic member arranged most outward in the lateral direction. The absorbent article of claim 9.

11. The moisture-permeable film has a plurality of micropores. The absorbent article according to claim 1 or 2.

12. The moisture permeability of the moisture-permeable film is 2.7 g / 100 cm ２ ・H or more 12g / 100cm ２ ・It is less than h The absorbent article of claim 11.

13. In the moisture-permeable film, The pore volume per unit mass of the micropores having a pore diameter in the range of 0.06 μm or more and 0.16 μm or less is larger than the pore volume per unit mass of the micropores having a pore diameter in the range of 2.5 μm or more and 3.5 μm or less. The absorbent article of claim 11.

14. the moisture-permeable film has inorganic fine particles disposed adjacent to the micropores, In the moisture-permeable film, in a plan view seen from the thickness direction, 0.01 μm ２ More than 0.5 μm ２ The pore diameter of the micropores arranged adjacent to the inorganic fine particles having a size of 1.0 μm or less ２ More than 1.5 μm ２ The pore size of the micropores arranged adjacent to the inorganic fine particles is smaller than the pore size of the micropores arranged adjacent to the inorganic fine particles. The absorbent article of claim 11.

15. In the moisture-permeable film, in a plan view seen from the thickness direction, 0.01 μm ２ More than 0.5 μm ２ The number of particles per unit area of ​​the inorganic fine particles having a size of 0.5 μm or less is ２ 2.0 μm or more ２ The number of particles per unit area of ​​the inorganic fine particles having a size of less than 1000 nm is less than that of the inorganic fine particles having a size of less than 1000 nm, and 2.0 μm ２ The number of particles per unit area of ​​the inorganic fine particles is 0.5 μm ２ 2.0 μm or more ２ The number of particles per unit area of ​​the inorganic fine particles having a size of less than 15. The absorbent article of claim 14.

Images