JP2023094946A - absorbent article - Google Patents

Abstract

To provide an absorbent article which facilitates an absorbent pad to a holder, suppresses contamination on the holder when using an absorbent article, and allows the absorbent pad to be efficiently used.SOLUTION: An absorbent article comprises: a holder 10 which is annularly fitted to a waist of a wearer; and an absorbent pad 20 detachably fitted to the holder 10. The holder 10 comprises: a front bodice F provided on an abdominal side of a wearer; and a rear bodice R provided on a back side of the wearer. The absorbent pad 20 comprises a pad side fitting structure 25 on an end region 20e of the absorbent pad 20 in the longitudinal direction X, and any one or both of the front and rear bodices F, R comprise(s): a slit 15 extending in a circumferential direction CD. The end region 20e of the absorbent pad 20 inserted into the slit 15 from a skin facing face side of the holder 10 to the non skin facing face side, is fitted to a non skin facing surface of the holder 10 through the pad side fitting structure 25.SELECTED DRAWING: Figure 1

Description

The present invention relates to absorbent articles.

As a type of absorbent article such as a disposable diaper, an absorbent pad that absorbs and retains body fluids such as urine, and an absorbent pad that is annularly worn around the wearer's waist and placed in the wearer's crotch area. A separate type is known in which an absorbent pad is detachably attached to the holder, which is provided with a holder for holding the absorbent pad (see Patent Documents 1 and 2).

The absorbent article described in Patent Document 1 has hooks provided on the inner surface (skin-facing surface) of the holder and loops provided on the outer surface (non-skin-facing surface) of the absorbent pad in the end regions in the longitudinal direction. Attaching the part allows the absorbent pad to be attached to the holder.
In the absorbent article described in Patent Document 2, a locked portion provided on the skin-facing surface in the longitudinal end region of the absorbent pad is attached to a locking portion provided on the non-skin-facing surface of the holder. The absorbent pad is thereby attached to the holder.

JP-A-2002-641 JP-A-2006-51240

In the absorbent article of Patent Document 1, it is necessary to insert the end region of the absorbent pad into the skin-facing side of the holder and then fasten the end region to the holder, so the absorbent pad is attached to the holder. difficult. In addition, it is difficult to remove the absorbent pad and replace it with a new one, since the end region of the absorbent pad located on the skin-facing side of the holder needs to be peeled off from the holder.
Attaching and replacing the absorbent pad to the holder is more difficult when the holder is already held around the waist of the wearer.

Since the absorbent article of Patent Document 2 can be attached by overlapping the end region of the absorbent pad on the non-skin facing surface of the holder, attaching and replacing the absorbent pad to the holder is similar to the absorbent article of Patent Document 1. It is easier than goods. However, during use of the absorbent article with the absorbent pad attached to the holder, the absorbent area of the absorbent pad is narrowed by the holder located on the skin-facing side of the absorbent pad, resulting in the absorption of the absorbent pad. In some cases, the performance cannot be effectively utilized, and in some cases, excrement adheres to the holder located on the side of the absorbent pad facing the skin, and the holder becomes dirty.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an absorbent article capable of overcoming the drawbacks of the prior art.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an absorbent article having a holder that is annularly worn around the waist of a wearer and an absorbent pad that is detachably attached to the holder.
The holder has a circumferential direction along the wearer's waist direction and a height direction along the wearer's height direction, and is arranged on the front body arranged on the abdomen of the wearer and on the back of the wearer. It preferably has a back body.
The absorbent pad preferably has a pad-side fastening structure in the longitudinal end regions of the absorbent pad.
Either one or both of the front body and the back body has a slit extending in the circumferential direction, and the absorbent body is inserted through the slit from the skin-facing surface side of the holder toward the non-skin-facing surface side. It is preferable that the end region of the elastic pad can be fastened to the non-skin facing surface of the holder via the pad-side fastening structure.

According to the present invention, the absorbent pad can be easily attached to the holder, the holder is less likely to become dirty during use of the absorbent article, and the absorbent article can effectively utilize the absorbent performance of the absorbent pad. can be provided.

FIG. 1(a) is a perspective view of one embodiment of the absorbent article of the present invention, and FIG. 1(b) is a cross-sectional view taken along line Ib-Ib of FIG. 1(a). 2 is a perspective view of a holder included in the absorbent article shown in FIG. 1. FIG. 3(a) is a plan view schematically showing the non-skin-facing surface (outer surface) of the front body in the maximum stretched state of the holder of the absorbent article shown in FIG. 1, and FIG. FIG. 4 is a plan view schematically showing the non-skin facing surface (outer surface) of the back body in the maximum extension state of the holder. FIG. 4(a) is a plan view schematically showing the skin-facing surface of the absorbent pad of the absorbent article shown in FIG. 1 in the maximum stretched state, and FIG. FIG. 4 is a plan view schematically showing the non-skin facing surface in a stretched state;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described based on its preferred embodiments with reference to the drawings. In addition, in the following description of the drawings, the same or similar reference numerals are given to the same or similar parts. The drawings are basically schematic, and the ratio of each dimension may differ from the actual one.

FIGS. 1(a) and 1(b) show a disposable diaper (hereinafter also simply referred to as "diaper") 1, which is one embodiment of the absorbent article of the present invention. The diaper 1 has, as shown in FIGS. 1(a) and 1(b), a holder 10 that is annularly worn around the wearer's waist, and an absorbent pad 20 that is detachably attached to the holder 10. As shown in FIG. As shown in FIGS. 1(a) and 1(b), the diaper 1 is inserted into the longitudinal end region 20e of the absorbent pad 20 with the slit 15 of the holder 10 inserted into the end region 20e of the absorbent pad 20. The holder 10 and the absorbent pad 20 are combined by detachably attaching the pad-side fastening structure 25 of the region 20e to the non-skin facing surface of the holder 10. As shown in FIG. The diaper 1 is defined by the waist opening WH of the holder 10, the lower end portion of the holder 10 in the height direction HD, and the side edge portions along the longitudinal direction (longitudinal direction X described later) of the absorbent pad 20. It has a pair of leg openings LH, LH.

In the diaper 1, which is a separate type absorbent article, the holder 10 and the absorbent pad 20 can be connected and separated via the non-skin-facing surface of the holder 10 and the pad-side fastening structure 25. The load on the environment is reduced compared to separate type absorbent articles. That is, a conventional non-separate type absorbent article is used in which the portion corresponding to the waist of the wearer (portion corresponding to the holder) and the portion corresponding to the crotch portion of the wearer (portion corresponding to the absorbent pad) are inseparably integrated. When discarding later, even if the part corresponding to the holder is not soiled, it has to be discarded together with the part corresponding to the absorbent pad that is soiled with excrement. Since only the pad 20 needs to be replaced with a new one, the amount of garbage disposal and the amount of carbon dioxide emissions are reduced compared to non-separate type absorbent articles, and the burden on the environment can be reduced. From the viewpoint of making this effect more pronounced and from the viewpoint of facilitating the work of attaching the absorbent pad 20 to the holder 10, the weight of the absorbent pad 20 is greater than the weight of conventional non-separate type absorbent articles. is preferably light. Specifically, when the diaper 1 is for adults, the mass of the absorbent pad 20 is preferably 40 g or less, more preferably 35 g or less, and even more preferably 30 g or less.
In addition, since the absorbent pad 20 is detachably fixed to the holder 10 while the diaper 1 is being worn, the work of replacing the absorbent pad 20 with a new one is simple, and the diaper 1 is similar to the conventional non-separate type. The burden of replacement work is greatly reduced compared to other absorbent articles.

The holder 10 is worn in a ring shape around the wearer's waist, and holds the absorbent pad 20 in a state in which it is worn by the wearer. and a circumferential direction CD along the waist circumference direction. The holder 10 is provided with a slit 15 through which the longitudinal end region 20e of the absorbent pad 20 can be inserted.

Briefly describing the absorbent pad 20 with reference to FIGS. 1(b) and 4(a) and (b), the absorbent pad 20 is positioned relatively close to the wearer's skin. a liquid-impermeable, liquid-impermeable or water-repellent back sheet 22 positioned relatively far from the wearer's skin; It includes an absorbent body 23 placed thereon. These members constituting the absorbent pad 20 are integrated by a known bonding means such as an adhesive. The absorbent pad 20 has a shape elongated in one direction when viewed from above, and when the absorbent pad 20 is used, the longitudinal direction of the absorbent pad 20 corresponds to the height direction HD of the holder 10 preliminarily attached to the wearer. Let The longitudinal direction of the absorbent pad 20 corresponds to the longitudinal direction X corresponding to the front-rear direction of the wearer of the diaper 10 , and the lateral direction Y of the absorbent pad 20 orthogonal to the longitudinal direction X corresponds to the circumferential direction CD of the holder 10 . handle. The absorbent pad 20 has a pad-side fastening structure 25 in the longitudinal direction X end region 20e. In the present embodiment, the portion of the absorbent pad 20 located outside the edge of the absorbent body 23 in the longitudinal direction X serves as the end region 20 e of the absorbent pad 20 . The pad-side fastening structure 25 can be detachably attached to the non-skin facing surface of the holder 10 . In this embodiment, the pad-side fastening structure 25 is provided on the skin facing side of the absorbent pad 20 . The pad-side fastening structures 25 are provided in both end regions 20e, 20e of the absorbent pad 20 in the longitudinal direction X, respectively.

As used herein, the term “skin-facing surface” refers to a wearing article such as an absorbent article, a holder, or an absorbent pad, or a constituent member thereof (for example, a holder-side fastening structure of a holder), which is worn by the wearer when the wearing article is worn. The "non-skin facing surface" refers to the surface of the wearing article or its constituent members that faces away from the skin when the wearing article is worn.

The holder 10 will be described in detail below.
The holder 10 has a circumferential direction CD along the waist direction of the wearer and a height direction HD along the height direction of the wearer. The holder 10 has a front body F arranged on the wearer's ventral side (front side) and a back body R arranged on the wearer's dorsal side (rear side). A body portion 11 is provided. The holder main body 11 forms the outer shape (contour) of the holder 10 in plan view, and the upper end 10a and the lower end 10b of the holder 10 in the height direction HD are the upper end and the lower end of the holder main body 11 . A slit 15 is formed in the holder body portion 11 .

In this embodiment, the holder 10 (holder main body 11) has an annular shape as shown in FIGS. have. Specifically, in the holder 10 of the present embodiment, the holder body portions 11 of the front body F and the back body R are joined together at both ends in the longitudinal direction by a known joining means such as adhesive or fusion. A pair of joints S, S are formed by being joined to each other, and the front body F and the back body R are connected via the pair of joints S, S to form a ring. The joint portion S corresponds to a side seal portion in a general non-separate pants-type disposable diaper.

In this embodiment, the front body F and the back body R of the holder main body 11 have different shapes in plan view in the maximum stretched state (see FIGS. 3A and 3B).
As shown in FIG. 3A, the holder main body 11 of the front body F has an upper end 11a and a lower end 11b parallel to a direction orthogonal to the height direction HD, and the height direction HD extending from both ends of the upper end 11a. It has side edges 11e, 11e extending downward, and oblique sides 11d, 11d connecting the lower ends in the height direction HD of the side edges 11e, 11e and both ends of the lower end 11b. The oblique side 11d is convexly curved upward in the height direction HD.
As shown in FIG. 3B, the holder main body 11 of the back body R has an upper end 11a parallel to the direction perpendicular to the height direction HD, and downwards in the height direction HD from both ends of the upper end 11a. It has side edges 11e, 11e that extend, and a lower end 11b that connects the lower ends of the side edges 11e, 11e in the height direction HD. The lower end 11b is convexly curved downward in the height direction HD.

As used herein, the term "maximum stretched state" refers to a state in which the elastic member of each part of the wearing article such as the absorbent article, holder, and absorbent pad is stretched to the maximum, and the design dimensions, that is, the state in which the influence of the elastic member is completely eliminated. It refers to the state in which it is expanded until it becomes the same size as when it is expanded flat.

In this embodiment, the holder body portions 11 of the front body F and the back body R respectively form the outer layer sheet 13 forming the non-skin facing surface (outer surface) of the holder 10 and the skin facing surface (inner surface) of the holder 10. and an inner layer sheet 12 . The inner layer sheet 12 may come into contact with the wearer's skin when the holder 10 is worn.

In this embodiment, the holder 10 (holder main body 11) includes an elastic member 14 that is arranged so as to be able to expand and contract in a direction (circumferential direction CD) perpendicular to the height direction HD. More specifically, as shown in FIG. 1(b) and FIGS. 3(a) and (b), a plurality of elastic members 14 are provided between the outer layer sheet 13 and the inner layer sheet 12 perpendicularly to the height direction HD. It is arrange|positioned so that expansion-contraction is possible in the direction (circumferential direction CD). As shown in FIG. 1, the plurality of elastic members 14 extend over the entire length of the front body F and the back body R in a direction (circumferential direction CD) perpendicular to the height direction HD, and are intermittently arranged in the height direction HD. It is Each elastic member 14 is fixed to other peripheral members with an adhesive. The number and positions of the elastic members 14 to be arranged are not particularly limited, and can be appropriately set in consideration of the fit of the holder 10 to the wearer's body.

As both sheets 12 and 13, non-woven fabrics, woven fabrics, resin films, etc. produced by various manufacturing methods can be used. Specific examples of nonwoven fabrics that can be used as the sheets 12 and 13 include spunbond nonwoven fabrics, air-through nonwoven fabrics, and needle-punched nonwoven fabrics, and may have a single-layer structure or a laminated structure in which one or more types of nonwoven fabrics are laminated. .
Both sheets 12 and 13 may be of the same type or different types. The term "same type" as used herein means that the manufacturing process, the type of constituent fibers, the fiber diameter and length of the constituent fibers, the thickness and basis weight of the fiber sheets are all the same among the sheets to be compared. If any one of these is different, then the contrasting sheets are "dissimilar" to each other.

Since the holder 10 does not include an absorber that absorbs and retains moisture, if washable materials are used as the constituent members of the holder main body 11 including the sheets 12 and 13, it can be washed and used repeatedly. can be possible. The fact that the holder 10 is washable leads to a reduction in the amount of garbage disposal and carbon dioxide emissions, and can contribute to a reduction in the burden on the environment. From the viewpoint of making the holder 10 washable, the holder 10 is preferably made of woven fabric. In other words, it is preferable that the members constituting the holder main body 11, such as the sheets 12 and 13, are made of woven fabric.

One or both of the sheets 12 and 13 may have stretchability in a direction (circumferential direction CD) orthogonal to the height direction HD. The holder according to the absorbent article of the present invention includes a form that does not include the elastic member 14 described above. It is preferable to have stretchability in the orthogonal direction. The holder according to the present invention includes, for example, a form in which the outer layer sheet 13 has stretchability in a direction orthogonal to the height direction HD and the inner layer sheet 12 does not have stretchability.

One or both of the front body F and the back body R of the holder 10 has a slit 15 extending in the circumferential direction CD. In this embodiment, as shown in FIGS. 1(b) and 3(a) and (b), each of the front body F and the back body R has a slit 15. As shown in FIG. The slit 15 is formed so as to pass through the holder body portion 11 in the thickness direction of the holder body portion 11 . The slit 15 is configured so that the end region 20e of the absorbent pad 20 can be inserted from the skin-facing surface side of the holder 10 toward the non-skin-facing surface side.
In this embodiment, each of the front body F and the back body R has only one slit 15, but may have a plurality of slits. The slit 15 of the front body F is located in the central region of the front body F in the circumferential direction CD, as shown in FIG. 3(a). The slit 15 of the back body R is located in the central region of the back body R in the circumferential direction CD, as shown in FIG. 3(b).

One of the characteristics of the absorbent article of the present invention is that, as shown in FIGS. The point is that the end region 20e of the absorbent pad 20 can be fastened to the non-skin-facing surface of the holder 10 via the pad-side fastening structure 25. As shown in FIG.
By inserting the end region 20e of the absorbent pad 20 into the slit 15 from the skin-facing surface side of the holder 10 toward the non-skin-facing surface side, the holder 10 is positioned below the slit 15 in the height direction HD. is positioned on the non-skin-facing side of the absorbent pad 20, the wearer's excrement is less likely to adhere to the holder 10, particularly to the portion of the holder 10 below the slit 15 in the height direction HD. 10 is hard to get dirty. Since the holder 10 is not easily soiled, only the absorbent pad 20 soiled with excrement can be replaced with a new one, and the same holder 10 can be used for a long period of time, thereby reducing the amount of waste disposal and the load on the environment. can be done.
In addition, since the end region 20e of the absorbent pad 20 pulled out from the slit 15 toward the non-skin-facing surface of the holder 10 can be attached to the non-skin-facing surface of the holder 10, the holder 10 has an absorptive property. It is easy to put on the pad 20. - 特許庁

Furthermore, since the portion of the holder 10 below the slit 15 in the height direction HD is located on the non-skin-facing side of the absorbent pad 20, the absorbent performance of the absorbent pad 20 can be effectively utilized. . Such effects will be described below.
For example, when the holder does not have slits, as in the absorbent article of Patent Document 2, when the end region of the absorbent pad is attached to the non-skin facing surface of the holder, the length of the absorbent pad is reduced. A portion from the end portion to the position of the lower end in the height direction of the holder is positioned on the non-skin facing side of the holder. Therefore, the portion of the absorbent pad 20 is less likely to absorb excrement, and the absorbent area of the absorbent pad 20 is narrowed by the portion.
On the other hand, in the diaper 1 of the present embodiment, the portion of the holder 10 below the slit 15 in the height direction HD is located on the non-skin facing side of the absorbent pad 20, so that the absorbent pad 20 , the portion from the edge of the end region 20e to the position of the slit 15 is located on the non-skin facing surface side of the holder 10, and the portion from the slit 15 to the position of the lower end 11b in the height direction HD of the holder 10 is , is positioned closer to the skin-facing surface than the holder 10 . Therefore, the portion of the absorbent pad 20 from the slit 15 to the position of the lower end 11b in the height direction HD of the holder 10 can absorb excrement, so that the absorbent pad 20 can expand its absorbable area. Therefore, the absorbent pad 20 can be effectively utilized.
Thus, in the diaper 1 of the present embodiment, the absorbent pad 20 can be easily attached to the holder 10, the holder 10 is less likely to become dirty during use of the diaper 1, and the absorbent performance of the absorbent pad 20 can be effectively utilized. can do.

As described above, only one of the front body F and the back body R of the holder 10 may have the slit 15. From the viewpoint of making the holder 10 less likely to get dirty during use and effectively utilizing the absorption performance of the absorbent pad 20, both the front body F and the back body R are slit. 15 is preferred. If only one of the front body F and the back body R has the slit 15, the other body that does not have the slit 15 is fastened with the end region 20e of the absorbent pad 20 on the non-skin facing surface. You may

The slit 15 can be formed at any position on the front body F or the back body R in the height direction HD.
The higher the slit 15 is positioned in the height direction HD, the more the end region 20e of the absorbent pad 20 inserted through the slit 15 is attached to the non-skin facing surface of the holder 10. The portion of the absorbent pad 20 located on the non-skin facing side is elongated in the vertical direction X, making the holder 10 even less likely to get dirty. Further, when the diaper 1 is worn with the end region 20e of the absorbent pad 20 inserted through the slit 15 attached to the non-skin facing surface of the holder 10, the height direction HD below the slit 15 in the holder 10 The portion positioned on the side is less likely to break, and the holder 10 can be used for a long period of time. From the viewpoint of achieving these effects more remarkably, the slit 15 formed in the front body F is such that the distance F3 from the lower end 11b in the height direction HD of the front body F is equal to the height of the front body F. It is preferably 20% or more, more preferably 25% or more, and still more preferably 30% or more of the total length F1 in the direction HD. From a similar point of view, the slit 15 formed in the back body R preferably has a distance R3 from the lower end 11b in the height direction HD of the back body R to the total length R1 of the back body R in the height direction HD. % or more, more preferably 25% or more, and still more preferably 30% or more.

When the diaper 1 is for adults, the slit 15 formed in the front body F makes the holder 10 less likely to get dirty, and breaks the portion of the holder 10 located below the slit 15 in the height direction HD. From the viewpoint of making the holder 10 difficult to remove and allowing the holder 10 to be used for a long period of time, the distance F3 is preferably 5 cm or more, more preferably 7 cm or more, and even more preferably 10 cm or more. From the same point of view, the slit 15 formed in the back body R preferably has a distance R3 of 5 cm or more, more preferably 7 cm or more, and still more preferably 10 cm or more.

On the other hand, the lower the slit 15 is positioned in the height direction HD, the more difficult it is for the holder 10 to break, and the longer the holder 10 can be used. From the viewpoint of achieving this effect more remarkably, the slit 15 formed in the front body F has a distance F2 from the upper end 11a in the height direction HD of the front body F. It is preferably 20% or more, more preferably 25% or more, and still more preferably 30% or more of the total length F1 of HD. From the same point of view, the slit 15 formed in the back body R preferably has a distance R2 from the upper end 11a of the back body R in the height direction HD relative to the total length R1 of the back body R in the height direction HD. % or more, more preferably 25% or more, and still more preferably 30% or more.

When the diaper 1 is for adults, the slit 15 formed in the front body F is preferably arranged such that the distance F2 is preferably 5 cm or more, more preferably 7 cm or more, and even more preferably 10 cm, from the viewpoint of using the holder 10 for a long time. That's it. From the same point of view, the slit 15 formed in the back body R preferably has a distance R2 of 5 cm or more, more preferably 7 cm or more, and even more preferably 10 cm or more.

The length Ls of the slit 15 in the circumferential direction CD is preferably a length that allows the end region 20e of the absorbent pad 20 to be inserted. Here, being able to be inserted means not only that the end region 20e of the absorbent pad 20 in its natural state can be inserted, but also that the end region 20e of the absorbent pad 20 is bent in the horizontal direction Y, It also includes the case where the end region 20e can be inserted in a state in which the length in the horizontal direction Y is shorter than in the natural state. From the viewpoint of facilitating insertion of the end region 20e of the absorbent pad 20 into the slit 15, the length Ls of the circumferential direction CD of the slit 15 is preferably 50% or more of the length Lp of the absorbent pad 20 in the width direction Y. , more preferably 60% or more, and still more preferably 70% or more. The upper limit of the length Ls of the slit 15 in the circumferential direction CD can be 80% of the length Lp of the absorbent pad 20 in the width direction Y. The length Ls of the slit 15 may be the same between the front body F and the back body R, or may be different.

When the diaper 1 is for adults, the length Ls of the slit 15 in the circumferential direction CD is preferably 10 cm or more, more preferably 10 cm or more, from the viewpoint of making it easier to insert the end region 20e of the absorbent pad 20 into the slit 15. is 15 cm or more, more preferably 20 cm or more. The upper limit of the length Ls of the slit 15 in the circumferential direction CD can be set to 30 cm.

In the height direction HD of the holder 10, the length F1 of the front body and the length R1 of the back body may be the same or different. When the length F1 of the front body and the length R1 of the back body are different, the length F1 may be longer than the length R1, or the length R1 may be longer than the length F1. good too. In general, the wearer's excretory part, such as the urethral opening, is located on the abdomen of the wearer, so the length F1 of the front body F is preferably short from the viewpoint of making the holder 10 less likely to get dirty. From the viewpoint that the back body R properly covers the wearer's buttocks and gives the wearer a sense of security, the length R1 of the back body R is preferably long. From the viewpoint of both of these, in the height direction HD, the length F1 of the front body F is preferably shorter than the length R1 of the back body R by 5 cm or more, more preferably 6 cm or more, and 7 cm or more. More preferred.

It is preferable that the holder 10 is made of an expandable member that expands and contracts in the height direction HD and the circumferential direction CD. By doing so, the fit of the holder 10 can be improved. Moreover, since the absorbent pad 20 can be pulled up when the diaper 1 is put on, the fit of the absorbent pad 20 can also be improved. From the viewpoint of achieving these effects more remarkably, the elongation rate of the expandable member constituting the holder 10 is preferably 10% or more, more preferably 15% or more, and even more preferably 20% or more. The upper limit of the elongation rate of the holder 10 can be set to 40%. The elongation rate of the expandable member that constitutes the holder 10 can be measured by the following method.

<Method for measuring elongation rate>
First, in a natural state, two marks are made on the outer surface of the holder 10 with a permanent marker or the like at a constant interval L0 (eg, 100 mm) in the direction of expansion and contraction of the holder 10 . Then, the marked portion of the holder 10 is clamped by a chuck of a tensile tester (manufactured by Shimadzu Corporation, model number: Autograph AG-X). Next, the chuck-to-chuck distance is increased at a speed of 300 mm/min, and the chuck-to-chuck distance when the tensile load reaches 3N is defined as L1. Then, the expansion ratio is calculated by the following formula.
Stretch ratio = (L1-L0)/L0

It is also preferable that the holder 10 has liquid absorbency. By doing so, the holder 10 can absorb sweat while the diaper 1 is being worn, so discomfort due to sweat can be reduced even when the diaper 1 is worn for a long period of time. Here, having liquid absorbability means that when a drop (approximately 0.05 cc) of physiological saline is dropped using a Komagome pipette or the like, the liquid It means that the drops are absorbed and become invisible. As a method of imparting liquid absorbency to the holder 10 , for example, a member having liquid absorbency may be used as the outer layer sheet 13 or the inner layer sheet 12 . Examples of the absorbent material include cotton, polyester, and the like.

As the pad-side fastening structure 25, it is sufficient that the end region 20e of the absorbent pad 20 can be detachably fastened to the non-skin-facing surface of the holder, and known detachable fastening structures are particularly limited. can be used without For example, the pad-side fastening structure 25 has an adhesive portion formed by applying an adhesive, and the pad-side fastening structure 25 is detachably fastened to the non-skin facing surface of the holder 10 via the adhesive portion. It may be made to do.

In this embodiment, a male member of a mechanical hook-and-loop fastener is employed as the pad-side fastening structure 25 . The term "mechanical hook-and-loop fastener" as used here means a surface member (male member) with hook material (engagement member) consisting of hook-shaped projections arranged on one side, and a loop material consisting of pile-shaped projections on one side. An arranged face member (female member) refers to a set of fasteners. A specific example of the mechanical hook-and-loop fastener is Velcro (registered trademark). In this embodiment, the non-skin-facing surface of the holder 10 is made of a fibrous sheet such as non-woven fabric or woven fabric that can be engaged with the male member. Further, the holder 10 may have a holder-side fastening structure to which the pad-side fastening structure 25 can be fastened on the non-skin facing surface. As the holder-side fastening structure, for example, a female member of a mechanical hook-and-loop fastener can be used. The holder 10 may have a holder-side fastening structure on either or both of the front body F and the back body R.

The present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the scope of the present invention.
For example, the holder of the present invention may be worn in a ring shape around the wearer's waist when in use, and may not be in a ring shape when not in use. For example, the holder main body 11 has a belt-like shape elongated in one direction, and one end and the other end in the longitudinal direction of the holder main body 11 are detachably connectable. At the time of mounting, the holder main body 11 may be formed into an annular shape by connecting one end and the other end in the longitudinal direction of the holder main body 11 . Alternatively, the holder main body 11 is divided into a plurality of members (for example, a member corresponding to the front body F and a member corresponding to the back body R) in the circumferential direction CD, and the plurality of members can be detachably attached to each other in one direction. The plurality of members may be connected to each other to form the ring-shaped holder main body 11 during use (mounting).

Further, the shape of the front body F and the back body R of the holder 10 in the maximum stretched state in plan view is not particularly limited, and may be a substantially rectangular shape or the like. Also, the front body F and the back body R may have the same shape and the same size in plan view.

In the above embodiment, both the outer layer sheet 13 and the inner layer sheet 12 have a single layer structure, but in the present invention, one or both of the sheets 12 and 13 may have a laminated structure. For example, the outer layer sheet 13 may have a laminated structure of two or more sheets including a sheet having stretchability in the lateral direction Y, and the inner layer sheet 12 may have a single layer structure made of a non-stretchable sheet.

In the above-described embodiment, the holder 10 includes the outer layer sheet 13 and the inner layer sheet 12 as the sheet-like members forming the holder main body 11. However, in the present invention, sheet-like members other than the two sheets 12 and 13 are used. may contain. Specifically, for example, the holder 10 (holder main body 11) has a function of being arranged in a region corresponding to the wearer's waist on the skin-facing surface (inner surface) of the holder 10 in addition to the sheets 12 and 13. may include sex sheets. The functional sheet has, for example, at least one of various functions such as sweat absorption, moisture absorption, antibacterial properties, and deodorant properties.

In the above embodiment, the pad-side fastening structure 25 is a male member of a mechanical hook-and-loop fastener, and the pad-side fastening structure 25 can be fastened to the non-skin facing surface of the holder 10. The attachment structure 25 is a female member of a mechanical hook-and-loop fastener, the male member of a mechanical hook-and-loop fastener is provided as a holder-side fixing structure on the non-skin facing surface of the holder 10, and the pad-side fixing structure 25 is a holder-side fixing structure. It may be fixed.

A pair of leak-prevention cuffs may be arranged on both sides of the absorbent pad 20 along the longitudinal direction X so as to stand on the wearer's skin side when the diaper 1 is worn. Each leak-preventing cuff may include a sheet for forming a leak-preventing cuff, which is the main body of the leak-preventing cuff, and an elastic member fixed to the sheet in an elongated state in the longitudinal direction X.

In the above-described embodiment, the planar view shape of the absorbent pad 20 is a substantially hourglass shape in which the length in the horizontal direction Y is shorter in the central region in the vertical direction X than in the end regions 20e in the vertical direction X. The planar view shape of the sexual pad 20 is not limited to this, and may be, for example, a substantially rectangular shape.

1 Absorbent article (diaper)
REFERENCE SIGNS LIST 10 holder 11 holder main body 12 inner layer sheet 13 outer layer sheet 14 elastic member 15 slit 20 absorbent pad 21 top sheet 22 back sheet 23 absorber 25 pad side fixing structure WH waist opening LH leg opening F front body R back body HD: Height direction of holder CD: Circumferential direction of holder X: Longitudinal direction of absorbent pad Y: Width direction of absorbent pad

Claims (11)

An absorbent article having a holder that is annularly worn around the waist of a wearer and an absorbent pad that is detachably attached to the holder,
The holder has a circumferential direction along the wearer's waist direction and a height direction along the wearer's height direction, and is arranged on the front body arranged on the abdomen of the wearer and on the back of the wearer. It has a back body,
The absorbent pad has a pad-side fastening structure in a longitudinal end region of the absorbent pad,
Either one or both of the front body and the back body has a slit extending in the circumferential direction, and the absorbent body is inserted through the slit from the skin-facing surface side of the holder toward the non-skin-facing surface side. and the end region of the absorbent pad can be fastened to the non-skin-facing surface of the holder via the pad-side fastening structure. The slit has a distance from the upper end of the front body or the back body in the height direction of 20% or more of the total length of the front body or the back body in the height direction, and the front body or the back body 2. The absorbent article according to claim 1, wherein the distance from the lower end of the body in the height direction is 20% or more of the total length of the front body or the back body in the height direction. The absorbent article according to claim 1 or 2, wherein the length of the slit in the circumferential direction is 50% or more of the length in the width direction of the absorbent pad. The slit has a distance of 5 cm or more from the upper end of the front body or the back body in the height direction, and a distance of 5 cm or more from the lower end of the front body or the back body in the height direction. , The absorbent article according to any one of claims 1 to 3. The absorbent article according to any one of claims 1 to 4, wherein the length of the slit in the circumferential direction is 10 cm or more. The absorbent article according to any one of claims 1 to 5, wherein the length of the front body is shorter than the length of the back body by 5 cm or more in the height direction. The absorbent article according to any one of claims 1 to 6, wherein both the front body and the back body have the slit. The absorbent article according to any one of claims 1 to 7, wherein said holder is made of a stretchable member having an elongation rate of 10% or more. The absorbent article according to any one of claims 1 to 8, wherein said holder has liquid absorbency. The absorbent article according to any one of claims 1 to 9, wherein said holder is made of woven fabric. The absorbent article according to any one of claims 1 to 10, wherein the absorbent pad has a mass of 40g or less.

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