WO2020217744A1 - Absorbent article - Google Patents

Abstract

This absorbent article (1) has a longitudinal direction, a right-left direction, and a thickness direction that intersect with each other in a developed state, and also has: an absorbent body (10) capable of absorbing liquid; and an exterior body (2) that comprises first nonwoven cloth areas (21a, 31a) each having a plurality of openings (40) therein and second nonwoven cloth areas (22a, 32a). The first nonwoven cloth areas (21a, 31a) are each disposed so as to be located closest to the skin side or to the non-skin side, in the thickness direction. The second nonwoven cloth areas (22a, 32a) overlap the respective first nonwoven cloth areas (21a, 31a) in the thickness direction. The first nonwoven cloth areas (21a, 31a) have a weight per unit area greater than that of the second nonwoven cloth areas (22a, 32a).

Description

Absorbent article

The present invention relates to an absorbent article.

Conventionally, as an exterior body of an absorbent article or the like, an absorbent article in which the exterior body is composed of at least two sheet members and at least one of the two sheet members is provided with a plurality of holes is known. ing. For example, Patent Document 1 discloses a disposable wear article in which a barrier sheet is interposed between a top sheet and a back sheet, and a group of vents penetrating the three sheets is provided. Further, Patent Document 2 discloses a pants-type absorbent article having an exterior body composed of an inner layer and an outer layer sheet member, and the inner layer and the outer layer sheet member each have an open portion.

JP-A-3-251245 JP 2015-128573

However, in Patent Document 1 and Patent Document 2, etc., the basis weight (weight per unit area) of each sheet member of the exterior body composed of a plurality of sheet members having holes is not disclosed.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a more improved absorbent article by changing the basis weight of each sheet member (nonwoven fabric, etc.). There is.

The main invention for achieving the above object is a first nonwoven fabric region having a longitudinal direction, a left-right direction, and a thickness direction intersecting each other in a developed state, an absorbent main body for absorbing liquid, and a plurality of openings. An absorbent article having an exterior body including a second non-woven fabric region, the first non-woven fabric region is arranged on the most skin side or the most non-skin side in the thickness direction, and the second non-woven fabric region. Is overlapped with the first nonwoven fabric region in the thickness direction, and the weight per unit area of the first nonwoven fabric region is larger than the weight per unit area of the second nonwoven fabric region. It is a non-woven fabric.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, it is possible to provide a more improved absorbent article by changing the basis weight of each sheet member (nonwoven fabric, etc.).

FIG. 1 is a schematic perspective view of the diaper 1. FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side. FIG. 3 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side. FIG. 4 is a schematic cross-sectional view taken along the line AA of FIG. FIG. 5 is an enlarged view of the X region of the first nonwoven fabric region 21a of FIG. FIG. 6 is an enlarged view of the X region of FIG. 3 when the color of the first nonwoven fabric region 21a is different from the color of the second nonwoven fabric region 22a. FIG. 7A is a schematic cross-sectional view illustrating the process of forming the opening 40, FIG. 7B is a schematic cross-sectional view illustrating the formed opening 40, and FIG. 7C is a first non-woven fabric region 21a (31a). It is sectional drawing explaining the bonding with the 2nd non-woven fabric region 22a (32a). FIG. 8 is a diagram showing an example of the arrangement position of the hot melt adhesive 50 in the X region of FIG. 9A is a diagram showing an example of the arrangement position of the hot melt adhesive 50 in the Y region of FIG. 1, and FIG. 9B is a diagram showing an example of the arrangement position of the hot melt adhesive 50 in the Y'region of FIG. Is. FIG. 10 is a schematic plan view of the diaper 1 of another embodiment in the unfolded and stretched state as viewed from the skin side. FIG. 11 is a schematic plan view of the diaper 1 of another embodiment in the unfolded and stretched state as viewed from the non-skin side. FIG. 12 is a schematic perspective view of the diaper 1 in yet another embodiment. FIG. 13 is an enlarged view of the Z region of FIG. 12, which shows a state in which the outer layer body 2 is separated into the non-woven fabric 21 and the non-woven fabric 22. FIG. 14 is an enlarged view of the Z region of FIG. 12, and is a view showing a state in which the non-woven fabric 21 and the non-woven fabric 22 are overlapped. FIG. 15A is a schematic enlarged view for explaining an example of the opening 40 and the opening 45, and FIG. 15B is a schematic enlarged view for explaining an example of the opening 40 and the opening 45.

The description of the present specification and the accompanying drawings will clarify at least the following matters.
An exterior body including an absorbent main body that has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other in the unfolded state and absorbs a liquid, a first non-woven fabric region having a plurality of openings, and a second non-woven fabric region. The first non-woven fabric region is arranged on the most skin side or the most non-skin side in the thickness direction, and the second non-woven fabric region is the first non-woven fabric in the thickness direction. An absorbent article that overlaps a region and is characterized in that the weight per unit area of the first nonwoven fabric region is larger than the weight per unit area of the second nonwoven fabric region.

According to such an absorbent article, in the first nonwoven fabric region having a weight per unit area greater than the weight per unit area of the second nonwoven fabric region (ie, the amount of fibers per unit area), adjacent to each perforation. Since the fibers existing in the opened portion of the non-woven fabric are gathered at the edge portion, the amount of fibers is further increased. As a result, at the edge of the hole, the color of the first non-woven fabric region becomes darker when viewed in a plan view, and the outline of the hole becomes clearer. Further, since the amount of fibers per unit area is large, light is not transmitted at the edge of the opening of the first non-woven fabric region, and the color of the non-woven fabric itself can be clearly seen. On the other hand, the second non-woven fabric region, which has a small amount of fibers per unit area, has a sense of sheerness because it transmits light. By superimposing the first and second non-woven fabric regions on each other, the contrast between the color depth of the edge of each opening and the sheer feeling of the second non-woven fabric region produces a visual effect, and each opening has a visual effect. The contour becomes clearer. Thereby, the user can recognize the excellent breathability. Further, since the overlap with the second non-woven fabric region can be seen from each opening, it is possible to avoid giving the impression that leakage occurs from the opening.

It is desirable that a white pigment is added to the fibers constituting the edge of the first non-woven fabric region adjacent to a certain opening among the plurality of openings in the absorbent article.

According to such an absorbent article, by adding a white pigment to the fibers constituting the edge of the opening of the first non-woven fabric region, the whiteness (concentration) of the edge of each opening becomes higher. Since the color difference from each opening is conspicuous, the visibility of each opening is improved. Thereby, the impression of having excellent breathability can be further given to the user.

It is desirable that the color of the first non-woven fabric region and the color of the second non-woven fabric region of the absorbent article are different.

According to such an absorbent article, by making the color of the first non-woven fabric region having the holes different from the color of the second non-woven fabric region, it is possible to make each opening of the first non-woven fabric region more visible. it can. By making it easier for the user to recognize each opening, it is possible to further give the impression that the absorbent article has good breathability.

It is desirable that the thickness of the first non-woven fabric region of the absorbent article is larger than the thickness of the second non-woven fabric region.

According to such an absorbent article, by increasing the thickness of the first non-woven fabric region, each opening can be shaded, and the opening can be made more conspicuous. By making each opening more noticeable, it is possible to further give the user the impression that the absorbent article has good breathability.

In such an absorbent article, on one surface of both sides of the first non-woven fabric region, fibers are projected in the thickness direction at the edge portion adjacent to a certain opening among the plurality of openings. It is desirable that the fiber protruding portion is present and the one surface on which the fiber protruding portion is present is joined to the second non-woven fabric region.

According to such an absorbent article, since the opening is formed by using a heated pin or the like, the edge portion adjacent to the opening is formed on the surface of the first non-woven fabric region opposite to the side where the pin is inserted. There is a fiber protrusion (so-called burr) in which the fibers are close to each other and protrude in the thickness direction. Since the side where the fiber protrusions are present is joined to the second non-woven fabric, the surface opposite to the side where the fiber protrusions are present is smooth without unevenness. As a result, when the first non-woven fabric region is arranged on the most skin side, it feels good on the skin, and when it is used on the non-skin side, it is less likely to get caught in clothing or the like when worn.

In such an absorbent article, the exterior body is a ventral waistline portion located on one end side of the absorbent body in the longitudinal direction, or a dorsal portion of the absorbent body located on the other end side of the absorbent body in the longitudinal direction. It is desirable that it is provided around the side waist.

According to such an absorbent article, by providing the exterior body around the ventral waist or the dorsal waist, a plurality of holes in the first non-woven fabric region are formed in the ventral waist or the dorsal waist. It will exist. As a result, it is possible to secure breathability around the abdomen of the wearer who easily sweats and prevent skin irritation.

It is desirable that the second non-woven fabric region of the absorbent article is made of a spunbonded non-woven fabric.

According to such an absorbent article, the basis weight is lower due to the spunbonded non-woven fabric than when the second non-woven fabric region is composed of the air-through non-woven fabric or the like. Therefore, as a whole, a feeling of sheerness is generated by transmitting light more than the first non-woven fabric region. By overlapping the second non-woven fabric region and the first non-woven fabric region, the opening of the first non-woven fabric region becomes more conspicuous, and the user can be given an impression of maintaining good air permeability.

It is desirable that at least a part of the edge portion of the absorbent article adjacent to a certain opening among the plurality of openings has a molten portion.

According to such an absorbent article, when a hole is formed by using a heated pin or the like, at least a part of the edge adjacent to the hole is melted, cooled and solidified, and the whiteness is reduced. Increase. By increasing the whiteness of the edge, the outline of the opening becomes more conspicuous. As a result, the wearer can be given the impression of maintaining excellent breathability.

In such an absorbent article, the first non-woven fabric region and the second non-woven fabric region are joined by a hot melt adhesive, and a certain opening among the plurality of openings is formed into a first hole and the said opening. When a hole different from the hole is used as the second hole, the first hole has a region that overlaps with the hot melt adhesive, and the second hole has only a region that does not overlap with the hot melt adhesive. It is desirable to have.

According to such an absorbent article, the shape of the first hole overlapping with the hot melt adhesive is maintained by the hot melt adhesive. On the other hand, air permeability can be ensured by the second hole which does not have an area overlapping with the hot melt adhesive.

It is desirable that the first hole of the absorbent article has a region that overlaps with the hot melt adhesive and a region that does not overlap with the hot melt adhesive.

According to such an absorbent article, in the opening, the shape of the opening can be maintained by the region overlapping with the hot melt adhesive, and the appearance of the opening can be maintained. At the same time, by having a region that does not overlap with the hot melt adhesive, breathability can be ensured.

In such an absorbent article, the first non-woven fabric region and the second non-woven fabric region have an overlapping region in which they overlap each other in the thickness direction, and at one end or the other end in the longitudinal direction of the overlapping region. It is desirable to have a non-bonded portion in which the first non-woven fabric region and the second non-woven fabric region are not bonded by a hot melt adhesive.

According to such an absorbent article, in at least a part of the peripheral portion of the exterior body, the peripheral portion is hard because the first non-woven fabric region and the second non-woven fabric region are not bonded by the hot melt adhesive. It can maintain its softness. Since the peripheral edge of the exterior body often comes into direct contact with the skin, the softness of such a peripheral edge makes it feel good on the skin and makes it difficult to damage the skin.

It is desirable that the second non-woven fabric region of the absorbent article has a plurality of openings.

According to such an absorbent article, by having holes in both the first and second non-woven fabric regions, the number of holes is increased and the air permeability is improved.

In such an absorbent article, one of the plurality of openings overlaps with one of the plurality of openings in the second non-woven fabric region, and an edge adjacent to the plurality of openings. It is desirable that the portion and the edge portion adjacent to the one opening are joined to each other.

According to such an absorbent article, the opening of the first non-woven fabric region and the opening of the second non-woven fabric region serve as through holes, and the perforated edges of each other are joined by melting or adhesion to ventilate. The property and visibility of the opening are improved.

It is desirable that at least a part of the open holes in the plurality of open holes in the absorbent article overlaps with the non-opened non-opened area in the second non-woven fabric region.

According to such an absorbent article, the air permeability is further improved in the portion where the openings overlap. Further, in the portion of the second non-woven fabric region that overlaps with the non-opened region, the shadow of a certain non-woven fabric region is emphasized and the visibility is improved by comparing with the sheer feeling of the second non-woven fabric region.

It is desirable that the absorbent article has a non-joining portion in which the edge portion adjacent to the certain opening and the non-opening region are not joined to each other.

According to such an absorbent article, the edge of the above-mentioned perforation and the non-perforation region overlapping at least a part of the perforation are not joined to each other, so that the skin feels good and is flexible. Can retain sex.

In such an absorbent article, the hole diameter of the certain hole is larger than the hole diameter of the hole formed in the second non-woven fabric region, and one hole formed in the second non-woven fabric region in a plan view. However, it is desirable that the fabric is located inside the opening.

According to such an absorbent article, the air permeability is further improved by overlapping the opening of the first non-woven fabric region and the opening of the second non-woven fabric region. In addition, the overlapping openings emphasize the shadows and improve the visibility of the openings.
=== Embodiment ===

Hereinafter, embodiments will be described with reference to pants-type disposable diapers for infants as an absorbent article according to the present invention. However, the present invention is not limited to the above, and the absorbent article according to the present invention can also be applied to disposable diapers for adults, tape-type disposable diapers, shorts-type sanitary napkins, and the like.

<Composition of disposable diaper 1>
FIG. 1 is a schematic perspective view of a pants-type disposable diaper 1 (hereinafter referred to as “diaper 1”). FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the skin side. FIG. 3 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side. FIG. 4 is a schematic cross-sectional view taken along the line AA of FIG.

Here, the above-mentioned "deployed state" refers to both ends of the ventral side portion (ventral waist circumference portion 20 described later) and both ends of the dorsal side portion (dorsal waist circumference portion 30 described later) in the left-right direction of the diaper 1. It is a state in which the diaper 1 is developed on a plane by breaking the connection with the portion, separating the ventral portion and the dorsal portion, and opening the diaper 1 in the longitudinal direction thereof. Further, the "extended state" of the diaper 1 is a state in which the entire diaper 1 (the entire product) is extended without wrinkles, specifically, each member constituting the diaper 1 (for example, the absorbent body 10 described later, and the like. It refers to a state in which the dimensions of the waist circumferences (20, 30, etc.) are extended until they match or are close to the dimensions of the individual member.

The diaper 1 has a vertical direction, a horizontal direction, and a front-rear direction that intersect each other in the pants type state (FIG. 1). The diaper 1 is a so-called three-piece type, and has an absorbent main body 10 that is applied to the crotch portion of the wearer and absorbs a liquid such as excrement, and an exterior body 2 that covers the waist circumference of the wearer. The exterior body 2 has a ventral waist circumference portion 20 that covers the ventral side and a dorsal waist circumference portion 30 that covers the dorsal side. The diaper 1 is formed with a waist circumference opening BH and a pair of leg circumference openings LH. The upper side in the vertical direction corresponds to the waist opening BH side, and the lower side corresponds to the crotch side. In addition, the front side in the front-rear direction corresponds to the ventral side of the wearer, and the rear side corresponds to the back side of the wearer.

In the unfolded state of FIG. 2, the diaper 1 has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other. Hereinafter, one side in the longitudinal direction in this deployed state is also referred to as "ventral" or "anterior", and the other side in the longitudinal direction is also referred to as "dorsal" or "rear". The longitudinal direction in the unfolded state is the direction along the vertical direction in the pants-shaped state. Further, as shown in FIG. 4, the thickness direction is the direction in which the materials constituting the diaper 1 are laminated. The side in contact with the wearer in the thickness direction is the skin side, and the opposite side is the non-skin side.

In the unfolded diaper 1 of FIG. 2, the central portion in the left-right direction of the ventral waist circumference portion 20 overlaps the end portion on one side in the longitudinal direction of the absorbent main body 10, and the other side in the longitudinal direction of the absorbent main body 10 overlaps. The central portion of the dorsal waist circumference portion 30 in the left-right direction overlaps the end portion. The unfolded diaper 1 is folded in half at the substantially central portion C10 in the longitudinal direction, and the ventral waist circumference 20 and the dorsal waist circumference 30 are joined by welding or the like, respectively, as shown in FIG. It becomes a diaper 1 in a pants-type state.

As the absorbent body 10, the absorbent body 11, the liquid-permeable top sheet (not shown) arranged on the skin side of the absorbent body 11, and the liquid-impermeable top sheet arranged on the non-skin side of the absorbent body 11 Can be exemplified with a back sheet (not shown). The absorber 11 absorbs and retains excrement such as urine, and can be exemplified by a liquid absorbent fiber such as pulp containing a highly absorbent polymer (SAP) formed into a predetermined shape.

The exterior bodies 2 (ventral waist circumference 20 and dorsal waist circumference 30) are the first non-woven fabrics 21 and 31 arranged on the non-skin side in the thickness direction, respectively, as shown in FIG. It has a second non-woven fabric 22 and 32 arranged closer to the wearer's skin than one non-woven fabric 21 and 31, a plurality of filamentous elastic members 23 and 33, and a cover non-woven fabric 24 and 34. The first non-woven fabrics 21 and 31 and the second non-woven fabrics 22 and 32 are arranged on the non-skin side of the absorbent main body 10. The cover non-woven fabrics 24 and 34 are arranged closer to the skin than the absorbent main body 10, have a shorter vertical length than the second non-woven fabrics 22, 32 and the like, and cover the longitudinal end of the absorbent main body 10. ing.

It is assumed that the first non-woven fabrics 21, 31, the second non-woven fabrics 22, 32, and the cover non-woven fabrics 24, 34 have thermoplastic resin fibers. For example, a single fiber of a thermoplastic resin such as polypropylene (PP) or polyethylene (PE) or a composite fiber having a sheath core structure of PP or PE can be exemplified.

The plurality of filamentous elastic members 23, 33 are arranged side by side in the vertical direction between the first non-woven fabrics 21, 31 and the second non-woven fabrics 22, 32, and are fixed in a state of being extended in the left-right direction. As a result, the ventral waist circumference portion 20 and the dorsal waist circumference portion 30 are provided with elasticity. Examples of the thread-like elastic members 23 and 33 include thread-like rubber and spandex.

Further, a plurality of openings 40 are formed in the first non-woven fabrics 21 and 31 at intervals. The shape of the opening 40 is not limited to the circular shape shown in the figure, and may be various shapes.

An exterior body having a plurality of openings penetrating the first nonwoven fabrics 21 and 31 and the second nonwoven fabrics 22 and 32 may be used, but in the case of such an exterior body, good air permeability can be maintained. However, it may give the wearer the impression that leakage occurs from each opening. Further, in order to eliminate anxiety about leakage, it is conceivable to arrange another sheet member so as to overlap the opening so that the opening portion does not become a through hole. However, simply stacking different sheet members may make it difficult to see the outline of the holes.

Regarding this point, the exterior body 2 of the present invention will be described. As shown in FIGS. 3 and 4, the exterior body 2 has first non-woven fabric regions 21a and 31a having a plurality of openings 40 among the first non-woven fabrics 21 and 31. Further, the exterior body 2 has the second non-woven fabric regions 22a and 32a of the second non-woven fabrics 22 and 32. In the present embodiment, the first non-woven fabric regions 21a and 31a are regions that are arranged on the non-skin side most in the thickness direction and overlap with the second non-woven fabrics 22 and 32 in the thickness direction, respectively. In the present embodiment, the second nonwoven fabric regions 22a and 32a cover the entire area of the second nonwoven fabrics 22 and 32, and as shown in FIG. 4, overlap the first nonwoven fabric regions 21a and 31a in the thickness direction, respectively. Area. Even when another sheet member is provided on a part of the non-skin side of the first non-woven fabrics 21 and 31, there is a region that is arranged on the most non-skin side and overlaps with the second non-woven fabrics 22 and 32. For example, the portion becomes the first non-woven fabric regions 21a and 31a.

FIG. 5 is an enlarged view of the X region of the first nonwoven fabric region 21a of FIG. The openings 40 provided in the first non-woven fabric regions 21a and 31a can be formed by using, for example, a heated pin member (pin 55 described later) or the like. When forming each opening 40, the edge portion 40a adjacent to the opening 40 is usually melted and solidified (for example, a portion having a width of 2 mm radially outward from the opening 40 is referred to as the "edge portion"). .. Then, in order to improve the visibility of the openings 40 formed in the first nonwoven fabric regions 21a and 31a that overlap with the second nonwoven fabric regions 22a and 32a in the thickness direction, the unit of the first nonwoven fabric regions 21a and 31a It is desirable that the weight per area (so-called basis weight) is larger than the weight per unit area of the second non-woven fabric regions 22a and 32a.

Here, the "weight per unit area (basis weight)" is, for example, an average value of the results of measuring the basis weight of a plurality of locations (for example, 10 locations) in the first non-woven fabric regions 21a and 31a. Specifically, the weight per unit area of the first nonwoven fabric regions 21a and 31a thus obtained is preferably 18 g / m ² . The weight of the second non-woven fabric regions 22a and 32a per unit area is preferably 13 g / m ² . Similarly, the measurement of the weight per unit area of the second nonwoven fabric regions 22a and 32a is the average value of the results of measuring a plurality of locations (for example, 10 locations).

The weight per unit area of the first non-woven fabric regions 21a and 31a and the second non-woven fabric regions 22a and 32a means the amount of fibers per unit area here. That is, the edge 40a (40a') adjacent to each of the openings 40 (40') provided in the first non-woven fabric regions 21a and 31a having a weight per unit area larger than the second non-woven fabric regions 22a and 32a is formed. The amount of fibers is also increased by gathering the fibers existing in the opened portion. As the fibers are gathered at each edge portion 40a (40a'), in the first non-woven fabric regions 21a and 31a, the color of the edge portion 40a (40a') of the opening 40 (40') when viewed in a plan view. Becomes darker, and a color difference from the opening 40 (40') occurs. As a result, the outline of the opening 40 (40') becomes more clearly visible. Further, the edge portion 40a (40a') of the opening 40 (40') in the first non-woven fabric regions 21a and 31a having a large amount of fibers per unit area does not transmit light, and the color of the non-woven fabric itself can be clearly seen. .. On the other hand, the second non-woven fabric regions 22a and 32a, which have a small amount of fibers per unit area, have a sense of sheerness because they transmit light. By superimposing the first non-woven fabric regions 21a and 31a and the second non-woven fabric regions 22a and 32a on top of each other, the color depth of each edge portion 40a (40a') and the sense of sheerness of the second non-woven fabric regions 22a and 32a The contrast of the produces a visual effect. As a result, the outline of each opening 40 (40') becomes more clearly visible. Since each opening 40 (40') is easily visible, the user can recognize excellent breathability. Further, since the overlap with the second non-woven fabric regions 22a and 32a can be seen from each of the openings 40 (40'), it is possible to avoid giving the impression that leakage occurs from each of the openings 40 (40').

In the above-described embodiment, the first non-woven fabric regions 21a and 31a are arranged on the non-skin side most in the thickness direction, but may be arranged so as to be the most skin side. By doing so, the user can be made aware that the inside (skin side) of the absorbent article has good air permeability. This will be described later.

Further, in the first non-woven fabric regions 21a and 31a, a white pigment may be added to the fibers constituting the edge portion 40a adjacent to the opening 40. Examples of the white pigment include titanium oxide and the like. By adding the white pigment, the whiteness (concentration) of the edge portion 40a of each opening 40 becomes higher, and the color difference from each opening 40 becomes conspicuous, so that the visibility of each opening 40 is improved. Thereby, the impression of having excellent breathability can be further given to the user. Here, the "whiteness" represents the degree of whiteness of the diaper 1 which is a textile product, and can be measured by the whiteness measuring method of the textile product specified in JIS L 1916.

Further, the colors of the first nonwoven fabric regions 21a and 31a may be different from the colors of the second nonwoven fabric regions 22a and 32a. FIG. 6 is an enlarged view of an X region of the first nonwoven fabric region 21a of FIG. 3 when the color of the first nonwoven fabric region 21a is different from the color of the first nonwoven fabric region 22a. Here, the color of the second nonwoven fabric region 22a is shown in a grid pattern, and the color of the second nonwoven fabric region 22a is visible from each opening 40 (40') of the first nonwoven fabric region 21a. The different colors referred to here are two colors in which the color difference between the colors in the two regions can be visually recognized with the naked eye. Regarding the "color difference", color measurement is performed on two points (two areas) to be measured using a commercially available colorimeter, and the color is based on the CIE1976 (L * a * b *) color space specified in JISZ8729 or the like. It can be obtained by comparing the numerical values. Specifically, when the difference in L * values between two points to be measured is ΔL *, the difference in a * values is Δa *, and the difference in b * values is Δb *, the color difference is calculated by the formula ΔE * ab. = [(ΔL *) ² + (Δa *) ² + (Δb *) ² ] ^1/2 . If the ΔE * ab value is 1.5 or more, it can be said that the colors are different to the extent that humans can perceive it. Therefore, here, the color difference ΔE * ab is 1.5 or more, preferably 3.0. In the above cases, it is assumed that the colors are "different from each other". In this embodiment, it is preferable that the difference in brightness between the two colors (ΔL * described above) is large. By making the colors different from each other in this way, it is possible to make each opening 40 (40') of the first non-woven fabric region 21a more visible. By making it easier for the user to recognize each opening 40 (40'), it is possible to further give the impression that the absorbent article 1 has good air permeability.

Further, the thickness of the first non-woven fabric regions 21a and 31a is preferably thicker than the thickness of the second non-woven fabric regions 22a and 32a. The “thickness” means, for example, a thickness measuring instrument (for example, KEYENCE) at a plurality of locations (for example, 10 locations) of the respective edge portions 40a adjacent to the plurality of openings 40 in the first non-woven fabric regions 21a and 31a. This is the average value of the results measured using a digital microscope VHX-2000) manufactured by Japan. When measuring the thickness, the non-woven fabric sample is impregnated with liquid nitrogen, frozen, cut with a razor, returned to room temperature, and then the thickness is measured with a digital microscope at a magnification of 50 times or more. The thickness of the first nonwoven fabric regions 21a and 31a measured using such a method is preferably 480 μm, and the thickness of the second nonwoven fabric regions 22a and 32a is preferably 190 μm. The thickness of the second non-woven fabric regions 22a and 32a is also measured by measuring a plurality of locations (for example, 10 locations) of the second non-woven fabric regions 22a and 32a using the above-mentioned measuring instrument and using the average value.

By increasing the thickness of the first non-woven fabric regions 21a and 31a, shadows can be provided in each of the openings 40, and the openings 40 can be made more conspicuous. By making each opening 40 more conspicuous, it is possible to further give the user the impression that the absorbent article 1 has good breathability.

FIG. 7A is a schematic cross-sectional view illustrating the process of forming the opening 40, FIG. 7B is a schematic cross-sectional view illustrating the formed opening 40, and FIG. 7C is a first non-woven fabric region 21a (31a). It is sectional drawing explaining the bonding with the 2nd non-woven fabric region 22a (32a).

In the present embodiment, the opening 40 is formed by the heated pin 55. As a result, the fibers (thermoplastic resin fibers) around the pins 55 are softened and then hardened, so that the shape of the openings 40 is easily maintained. As shown in FIG. 7A, assuming that both sides of the first non-woven fabric regions 21a and 31a are the non-skin side surfaces 210 and 310 and the skin side surfaces 211 and 311, the heated pins 55 are inserted from the non-skin side surfaces 210 and 310. By pulling out after penetrating, the fibers existing in the portion of the opening 40 (for example, a certain opening 40') protrude from one of the two surfaces (skin side surfaces 211, 311). As such, the presence of the fiber protrusion 42 (FIG. 7B) in which the fiber protrudes in the thickness direction at the edge 40a'adjacent to the opening 40'may irritate the wearer's skin.

In that respect, in this embodiment, as shown in FIG. 7C, one surface (skin side surface 211, 311) where the fiber protrusion 42 is present is joined to the second non-woven fabric regions 22a and 32a. Since the side where the fiber protrusion 42 exists is joined to the second non-woven fabric regions 22a and 32a, the non-skin side surfaces 210 and 310 of the first non-woven fabric regions 21a and 31a are smooth without unevenness. As a result, when the first non-woven fabric regions 21a and 31a are arranged closest to the skin as in the present embodiment, the skin feels better. Further, when the first non-woven fabric regions 21a and 31a are arranged on the non-skin side most, they are less likely to be caught by clothing or the like when worn.

Further, the exterior body 2 having the first non-woven fabric regions 21a and 31a and the second non-woven fabric regions 22a and 32a as in the present embodiment is located on the ventral side located on one end side (ventral side) in the longitudinal direction of the absorbent body 1. It may be provided on either the waist circumference portion 20 or the back side waist circumference portion 30 located on the other end side (dorsal side) of the absorbent main body 1 in the longitudinal direction. By providing the exterior body 2 having the first non-woven fabric region 21a (or 31a) and the second non-woven fabric region 22a (or 32a), the first non-woven fabric region 21a is provided in the ventral waist circumference portion 20 or the dorsal waist circumference portion 30. (Or 31a) there will be a plurality of openings 40. As a result, it is possible to secure breathability around the abdomen of the wearer who easily sweats and prevent skin irritation.

Further, it is desirable that the second non-woven fabric regions 22a and 32a are made of spunbonded non-woven fabric. The basis weight of the fiber is lower because the second non-woven fabric regions 22a and 32a are made of the spunbonded non-woven fabric as compared with the case where the second non-woven fabric regions 22a and 32a are made of the air-through nonwoven fabric, the SMS nonwoven fabric (spunbond, meltblown, spunbonded nonwoven fabric) and the like. As a result, the second non-woven fabric regions 22a and 32a transmit light more than the first non-woven fabric regions 21a and 31a as a whole, and a feeling of sheerness is generated. By overlapping the second non-woven fabric regions 22a and 32a with the first non-woven fabric regions 21a and 31a, the openings in the first non-woven fabric regions 21a and 31a are more conspicuous, giving the user the impression of maintaining good air permeability. Can be given.

Further, the opening 40 of the present embodiment is formed by using a heated pin 55. Therefore, as shown in FIGS. 5 and 6, at least a part of the edge portion 40a'adjacent to a certain opening 40' has a melting portion 40ah. That is, when the opening 40 is formed, at least a part of the edge portion 40a'adjacent to the opening 40'is melted, cooled and solidified, and the whiteness is increased. By increasing the whiteness of the edge portion 40a', the outline of the opening 40' becomes more conspicuous. This makes it easier for the wearer to visually recognize each opening 40.

Further, the first non-woven fabric regions 21a and 31a and the second non-woven fabric regions 22a and 32a may be bonded by the hot melt adhesive 50. FIG. 8 is a diagram showing an example of the arrangement position of the hot melt adhesive 50 in the X region of FIG. 9A is a diagram showing an example of the arrangement position of the hot melt adhesive 50 in the Y region of FIG. 1, and FIG. 9B is a diagram showing an example of the arrangement position of the hot melt adhesive 50 in the Y'region of FIG. Is.

Here, as shown in FIG. 8, when a certain opening 40'is a first hole 40', the first hole 40'is a region 60 (indicated by a diagonal line downward to the left) overlapping with the hot melt adhesive 50. Has a part). Further, when a second hole 40'' is used as a hole different from a certain hole 40', the second hole 40'' has only a region 65 that does not overlap with the hot melt adhesive 50. .. By doing so, the shape of the first hole 40'that overlaps with the hot melt adhesive 50 is maintained by the hot melt adhesive 50. On the other hand, the presence of the second hole 40 ″ which does not have a region overlapping with the hot melt adhesive 50 can ensure the air permeability.

Looking at the first hole 40', the first hole 40'has a region 60 that overlaps with the hot melt adhesive 50 and a region 65 that does not overlap with the hot melt adhesive 50. In the first hole 40'having both the region 60 overlapping with the hot melt adhesive 50 and the region 65 not overlapping with the hot melt adhesive 50, the overlapping region 60 maintains the shape of the opening 40'and opens the hole 40'. The aesthetic appearance of the hole 40'can be maintained. At the same time, the non-overlapping areas 65 ensure breathability.

As the hot melt adhesive, for example, EVA type, elastomer type, olefin type, polyester / polyamide type and the like can be used. In order to prevent the applied hot melt adhesive 50 from being exposed from the openings 40 and making the surface sticky, it is desirable to use a low-tack type or non-tack type hot melt having a small tack force (that is, low adhesiveness). It is desirable to use a system adhesive. As the low-tack type or non-tack type hot melt adhesive, a hot melt adhesive using an olefin-based material as a base polymer can be exemplified. Further, as a method of applying the hot melt adhesive, known coating methods such as spiral coating that can be applied in a spiral shape, omega coating that can be applied in a wavy shape, and control seam coating can be exemplified.

Next, the Y region of FIG. 1 shown in FIG. 9A is a part of the ventral waist circumference portion 20 of the absorbent article 1, and the first non-woven fabric region 21a and the second non-woven fabric region 22a overlap each other in the thickness direction. It has a region 25 (FIG. 9A). At the upper end (one end) 25e1 of the overlapping region 25 in the vertical direction (longitudinal direction), a non-woven portion 27 in which the first nonwoven fabric region 21a and the second nonwoven fabric region 22a are not bonded by a hot melt adhesive is provided. Has been done. The upper end (one end) 25e1 of the overlapping region 25 is a portion that often rubs against the wearer's skin not only when the absorbent article 1 is attached or detached but also during wearing. Since the upper end portion 25e1 of the overlapping region 25 is not joined by the hot melt adhesive 50, the end portion 25e1 does not become hard and can maintain its softness. As a result, even if there are many opportunities to directly hit the skin, the skin feels good and the skin is not easily damaged.

Similarly, the Y'region of FIG. 1 shown in FIG. 9B is a part of the lower side of the ventral waist circumference portion 20 of the absorbent article 1, and the first non-woven fabric region 31a and the second non-woven fabric region 32a are in the thickness direction. Has an overlapping region 25'(FIG. 9B) that overlaps with each other. At the lower end (other end) 25e2 in the vertical direction (longitudinal direction) of the overlapping region 25', the first non-woven fabric region 31a and the second non-woven fabric region 32a are not joined by a hot melt adhesive. This is an example when 27'is provided. The lower end (other end) 25e2 of the overlapping region 25'is a portion that often comes into contact with the wearer's thigh. Then, as shown in FIG. 9B, since the lower end portion 25e2 has the non-bonded portion 27'that is not bonded by the hot melt adhesive 50, the lower end portion 25e2 does not become hard and retains its softness. it can. As a result, even if the lower end 25e2 has more chances to come into direct contact with the skin according to the movement of the wearer's legs, the skin feels good and the skin is less likely to be damaged.
=== Other embodiments ===

Although the embodiments of the present invention have been described above, the above-described embodiments are for facilitating the understanding of the present invention, and are not for limiting the interpretation of the present invention. Further, the present invention can be changed or improved without departing from the spirit thereof, and it goes without saying that the present invention includes an equivalent thereof.

In the above-described embodiment, the first non-woven fabric regions 21a and 31a are arranged on the most non-skin side, but may be arranged on the most skin side. FIG. 10 is a schematic plan view of the diaper 1 of another embodiment in the unfolded and stretched state as viewed from the skin side, and shows an example in which the first non-woven fabric regions 21a and 31a are arranged most on the skin side. .. Here, the first non-woven fabrics 21 and 31 are arranged on the skin side in the thickness direction, and the second non-woven fabrics 22 and 32 are arranged on the non-skin side of the wearer rather than the first non-woven fabrics 21 and 31. As a result, the first non-woven fabric regions 21a and 31a having a plurality of openings 40 are arranged on the skinmost side, and the second non-woven fabric regions 22a and 32a are arranged on the non-skin side of the first non-woven fabric regions 21a and 31a. It becomes. The presence of the plurality of openings 40 of the present invention in the area in contact with the wearer's skin reduces stuffiness due to excellent breathability even when the wearer sweats, and is comfortable to wear for a long time. You can spend time in. Further, since the second non-woven fabric regions 22a and 32a are provided on the non-skin side of each of the openings 40, it is possible to eliminate the anxiety of leakage from each of the openings 40.

In the above-described embodiment, as shown in FIG. 3, a 3-piece type disposable diaper 1 is illustrated as an example of an absorbent article, but the present invention is not limited to this. FIG. 11 is a schematic plan view of the diaper 1 of another embodiment in the unfolded and stretched state as viewed from the non-skin side. The diaper 1 in FIG. 11 is a two-piece type disposable diaper 1. The two-piece type disposable diaper has a two-layered exterior body 2 having a ventral side, a crotch part, and a dorsal side as a first component, and is fixed to the skin side surface of the exterior body 2. This is a type of diaper that has a sex body 10 as a second component. Here, the first non-woven fabric 21 (first non-woven fabric region 21a) is arranged on the non-skin side surface of the exterior body 2. Then, the second nonwoven fabric region 22a is arranged on the skin side of the first nonwoven fabric region 21a so as to overlap the first nonwoven fabric region 21a in the thickness direction. In the case of the two-piece type, it is possible to increase the area of the first non-woven fabric region 21a by including the crotch part, and in that case, the presence of a large number of openings 40 that can be clearly seen by the user makes it more effective. You can recognize excellent breathability. Further, since the overlap with the second non-woven fabric region 22a can be seen from each opening 40, it is possible to avoid giving the impression that leakage occurs from the opening 40.

Further, in the above-described embodiment, the second non-woven fabric regions 22a and 32a are not provided with holes, but the second non-woven fabric regions 22a and 32a may have a plurality of holes. FIG. 12 is a schematic perspective view of the diaper 1 in yet another embodiment. FIG. 13 is an enlarged view of the Z region of FIG. 12, which shows a state in which the outer layer body 2 is separated into the first non-woven fabric 21 and the second non-woven fabric 22. In FIG. 13, elastic members and the like that may exist between the first non-woven fabric 21 and the second non-woven fabric 22 are omitted.

In the embodiment, as an example, a plurality of openings 45 formed in a state where the first non-woven fabric 21 and the second non-woven fabric 22 are stacked are provided in a part of the ventral waist circumference portion 20 of the exterior body 2. Similarly, a part of the dorsal waist circumference portion 30 of the exterior body 2 is also provided with a plurality of openings 45 formed by stacking the first non-woven fabric 31 and the second non-woven fabric 32. In this embodiment, the holes 45 are provided in both the ventral waist circumference 20 and the dorsal waist circumference 30, but only one side may be provided. Hereinafter, only the ventral waist circumference 20 will be described on behalf of both.

Also in the embodiment, the first non-woven fabric region 21a is a region that is arranged on the non-skin side most in the thickness direction and overlaps with the second non-woven fabric 22 in the thickness direction, and is the second non-woven fabric region 22a. Is the entire area of the second non-woven fabric 22 and is a region overlapping the first non-woven fabric region 21a when viewed in the thickness direction. In this embodiment, the first nonwoven fabric region 21a and the second nonwoven fabric region 22a have a plurality of openings 45 in a part of the region that does not overlap with the absorbent main body 10 in the thickness direction. As a result, when the Z region of FIG. 12 is taken as an example, as shown in FIG. 13, the first nonwoven fabric 21 (first nonwoven fabric region 21a) side has the openings 40 and the openings 45, and the second nonwoven fabric The 22 (second non-woven fabric region 22a) side has an opening 45. Normally, the portion where the opening 40 and the opening 45 overlap is an opening portion, so that the outline of each opening cannot be seen. However, in FIGS. 12 and 13 (and FIGS. 14 and 15 described later), , For convenience of explanation, the outline of each opening is left as a solid line. By having a plurality of openings 45 not only in the first nonwoven fabric region 21a but also in the second nonwoven fabric region 22a, the number of openings is increased as a whole, and it becomes easier to secure air permeability. Further, since the opening 45 is a through hole penetrating the first non-woven fabric region 21a and the second non-woven fabric region 22a, visibility is good. Then, as in the present embodiment, by providing the opening 45 in the region that does not overlap with the absorbent main body 10 in the thickness direction, it is possible to prevent anxiety that the absorbed liquid leaks. it can. Further, since the first non-woven fabric 21 side, which has a large weight per unit area, has good cushioning property due to the fibers gathering at each edge portion 40a, the first non-woven fabric 21 is placed inside or outside the waist circumference portions (20, 30). When used, it can also give a difference in cushioning properties.

FIG. 14 is an enlarged view of the Z region of FIG. 12, and is a view in which the first non-woven fabric 21 and the second non-woven fabric 22 are overlapped. Looking at the opening 40'of the plurality of openings 40 of the first non-woven fabric 21 (first non-woven fabric region 21a) as an example, the opening 40'is on the side of the second non-woven fabric 22 (second non-woven fabric region 22a). It may overlap with one of the plurality of openings 45 provided. Further, the edge portion 40a'adjacent to the certain opening 40'and the edge portion 45a'adjacent to one opening 45' have joint portions 40aeh and 45aeh in which at least a part thereof is joined to each other. ing. In the joint portions 40aeh and 45aeh, when the opening 45 is formed so as to penetrate the first non-woven fabric 21 and the second non-woven fabric 22, the edge portion 40a of the opening 40 and the edge portion 45a of the opening 45 overlap. It may be formed by melting, cooling and solidifying at least a part of the portion. Further, even if the overlapping portion between the edge portion 40a and the edge portion 45a does not melt, if a hot melt adhesive or the like is used for bonding the first non-woven fabric 21 and the second non-woven fabric 22, such an adhesive. The joint portions 40aeh and 45aeh may be formed by the above.

As described above, the presence of a portion where the opening 40 (40') and the opening 45 (45') overlap can further improve the air permeability. Further, in the joint portions 40aeh and 45aeh, the contour of the opening 40 (45) becomes clearer due to the gathered fibers, so that the visibility is improved.

FIG. 15A is a schematic enlarged view for explaining an example of the opening 40 and the opening 45. Similar to FIG. 14, among the plurality of openings 40 of the first nonwoven fabric 21 (first nonwoven fabric region 21a), a plurality of holes 40'are provided on the second nonwoven fabric 22 (second nonwoven fabric region 22a) side. One of the openings 45 in the above is referred to as an opening 45'. Then, in the second non-woven fabric 22 (second non-woven fabric region 22a), the region without the perforations 45 is designated as the non-perforated region N45 (the portion indicated by the diagonal line downward to the left). As shown in FIG. 15A, at least a part of a certain opening 40'has a region 40N (a portion shown in a grid pattern) that overlaps with the non-opening region N45 of the second nonwoven fabric region 22a. As a result, where the openings (40', 45') overlap each other, the air permeability is further improved, and the portion where the openings 40'and the non-opened region N45 overlap is on the second non-woven fabric region 22a side. The shadow of the opening 40'is emphasized by the contrast with the sense of sheerness, and the visibility is improved.

Further, it is preferable that the edge portion 40a'adjacent to a certain opening 40'and the non-opening region N45 have a non-joining portion 70 that is not joined to each other. The edge portion 40a', which tends to become hard due to the fibers approaching, and the non-perforated region N45, which is a region of the second non-woven fabric 22 (second non-woven fabric region 22a) without an opening 45, are not joined, so that the edge portion 40a is not joined. 'Does not become hard and can maintain flexibility as the exterior body 2.

FIG. 15B is a schematic enlarged view for explaining an example of the opening 40 and the opening 45, and shows an example of the relationship between the sizes of the opening 40 and the opening 45. The hole diameter of one of the openings 40 is 40 adi, and the diameter of one of the plurality of openings 45 provided on the side of the second non-woven fabric 22 (second non-woven fabric region 22a) is 45'. Assuming that it is 45 adi, the hole diameter of 40 adi is preferably larger than the hole diameter of 45 adi. Regarding the size of the hole diameters of 40 adi and 45 adi in this example, if the edge of the lower hole (the edge of the opening 45'in FIG. 15B) can be seen in a plan view, the hole diameter of the upper hole (40') is larger. However, if it cannot be seen, the hole diameter of the upper hole (40') is assumed to be smaller. Further, in a plan view, it is preferable that the opening 45'is located inside the opening 40'. As a result, the air permeability of the exterior body 2 is improved at the portion where the opening 40'and the opening 45' overlap. Further, the overlapping openings 40'and 45'create a shadow in the overlapping portion of the openings 40' and 45'in a plan view, and the visibility of the openings is improved.

1 absorbent article, 2 exterior body,
10 Absorbent body, 11 Absorbent,
20 ventral waist circumference, 20a peripheral part, 20b peripheral part,
21 First non-woven fabric, 21a First non-woven fabric area,
22 Second non-woven fabric, 22a Second non-woven fabric area,
23 thread-like elastic member, 24 cover non-woven fabric,
25 overlapping area, 25'overlapping area, 25e1 upper end, 25e2 lower end,
27 non-joint, 27'non-joint,
30 Dorsal girth, 31 First non-woven fabric, 31a First non-woven fabric area,
32 Second non-woven fabric, 32a Second non-woven fabric area,
33 Filamentous elastic member, 34 Cover non-woven fabric,
40 perforations, 40a edges, 40'perforations, 40a' edges,
40ah fusion part, 40''open hole, 40aeh joint part, 40adi hole diameter, 40N region,
42 Fiber overhangs, 45 perforations, 45'perforations, 45a edges, 45a' edges 45adi hole diameter, 45aeh joints,
50 hot melt adhesive, 55 pins,
60 Area that overlaps with hot melt adhesive,
65 Area that does not overlap with hot melt adhesive,
70 non-joint,
210 non-skin side, 310 non-skin side,
211 Skin side, 311 Skin side,
N45 non-opened area, BH waist opening, LH leg opening

Claims (16)

1. It has a longitudinal direction, a left-right direction, and a thickness direction that intersect each other in the unfolded state.
   Absorbent body that absorbs liquid and
   An absorbent article having a first non-woven fabric region having a plurality of openings and an exterior body including a second non-woven fabric region.
   The first non-woven fabric region is arranged on the most skin side or the most non-skin side in the thickness direction.
   The second nonwoven fabric region overlaps with the first nonwoven fabric region in the thickness direction.
   An absorbent article characterized in that the weight per unit area of the first nonwoven fabric region is larger than the weight per unit area of the second nonwoven fabric region.
2. The absorbent article according to claim 1.
   An absorbent article characterized in that a white pigment is added to fibers constituting an edge portion of the first non-woven fabric region adjacent to a certain opening among the plurality of openings.
3. The absorbent article according to claim 1 or 2.
   An absorbent article characterized in that the color of the first nonwoven fabric region and the color of the second nonwoven fabric region are different.
4. The absorbent article according to any one of claims 1 to 3.
   An absorbent article characterized in that the thickness of the first nonwoven fabric region is thicker than the thickness of the second nonwoven fabric region.
5. The absorbent article according to any one of claims 1 to 4.
   On one surface of both sides of the first non-woven fabric region, there is a fiber protruding portion in which fibers protrude in the thickness direction at an edge portion adjacent to a certain opening among the plurality of openings.
   An absorbent article characterized in that one surface on which the fiber protrusion is present is joined to the second nonwoven fabric region.
6. The absorbent article according to any one of claims 1 to 5.
   The exterior body is provided on a ventral waist circumference portion located on one end side of the absorbent body in the longitudinal direction or a dorsal waist circumference portion located on the other end side of the absorbent body in the longitudinal direction. An absorbent article characterized by that.
7. The absorbent article according to any one of claims 1 to 6.
   The second nonwoven fabric region is an absorbent article characterized by being composed of a spunbonded nonwoven fabric.
8. The absorbent article according to any one of claims 1 to 7.
   An absorbent article characterized in that at least a part of an edge portion adjacent to a certain opening among the plurality of openings has a molten portion.
9. The absorbent article according to any one of claims 1 to 8.
   The first non-woven fabric region and the second non-woven fabric region are joined by a hot melt adhesive.
   When one of the plurality of openings is a first hole and an opening different from the one is a second hole, the first hole is a region overlapping the hot melt adhesive. The absorbable article, wherein the second hole has only a region that does not overlap with the hot melt adhesive.
10. The absorbent article according to claim 9.
    An absorbent article characterized in that the first hole has a region that overlaps with the hot melt adhesive and a region that does not overlap with the hot melt adhesive.
11. The absorbent article according to any one of claims 1 to 10.
    The first non-woven fabric region and the second non-woven fabric region have an overlapping region in which they overlap each other in the thickness direction.
    An absorbent article characterized in that, at one end or the other end in the longitudinal direction of the overlapping region, the first nonwoven fabric region and the second nonwoven fabric region have a non-bonded portion that is not bonded by a hot melt adhesive.
12. The absorbent article according to any one of claims 1 to 11.
    The second non-woven fabric region is an absorbent article characterized by having a plurality of openings.
13. The absorbent article according to claim 12.
    One of the plurality of openings in the first nonwoven fabric region overlaps with one of the plurality of openings in the second nonwoven fabric region.
    An absorbent article characterized in that an edge portion adjacent to a certain opening and an edge portion adjacent to the one opening are joined to each other.
14. The absorbent article according to claim 12.
    An absorbent article characterized in that at least a part of the openings in the plurality of openings in the first nonwoven fabric region overlaps with the non-opened regions in the second nonwoven fabric region without openings.
15. The absorbent article according to claim 14.
    An absorbent article characterized in that an edge portion adjacent to a certain opening and the non-opening region have a non-joining portion that is not joined to each other.
16. The absorbent article according to claim 14 or 15.
    The hole diameter of the opening is larger than the hole diameter of the opening formed in the second non-woven fabric region.
    An absorbent article, characterized in that, in a plan view, one opening formed in the second non-woven fabric region is located inside the opening.

Images