JP5420340B2 - Absorbent article - Google Patents

Description

  The present invention relates to an absorbent article.

Conventionally, in the field of absorbent articles, sanitary napkins, incontinence pads, and the like, for which hygienic management is particularly important, are often provided to consumers with individual absorbent articles packaged independently. The absorbent article with such individual packaging is superior in terms of hygiene, but the bags used for individual packaging are discarded after opening and become garbage.
In order to prevent the generation of such dust, an attempt has been made to function when worn without discarding the material used for individual packaging. For example, in Patent Document 1, an individual wrapping sheet, an absorbent body overlaid on the individual wrapping sheet, and a flexible trap portion in which at least one end of the absorbent body is accommodated are described as the individual wrapping sheet. A trap sheet formed between the trap sheet and at least one of the other end portions of the trap sheet and the individual packaging sheet, and the individual packaging sheet so that the other end side of the individual packaging sheet overlaps the trap sheet The absorbent product is characterized in that it comprises a joining tape for releasably joining the other end of the sheet and one end of the individual packaging sheet or the trap sheet.

JP 2003-180722 A

In the absorbent product described in Patent Document 1, in order to temporarily store unabsorbed body fluid when a large amount of body fluid is discharged in a short time and the discharge rate of the body fluid exceeds the absorption rate of the body fluid by the absorber A trap portion is provided.
However, in reality, not all bodily fluids that are not absorbed by the absorber are stored in the trap portion. Inside the individual wrapping sheet, there is a body fluid that is not absorbed even in a portion other than the trap portion, which causes leakage when the wearer's body moves. In particular, when an absorbent body having a high content of superabsorbent polymer (hereinafter also referred to as “SAP”) is used, the problem of such leakage is caused by the slow absorption rate of the body fluid of SAP. Was big.
Therefore, an object of the present invention is to provide an absorbent article that functions when worn without discarding the material used for individual packaging and that is unlikely to leak.

  As a result of intensive studies to achieve the above object, the present inventor has completed an absorbent article having a novel structure.

That is, the present invention provides the following (1) to (17).
(1) a liquid-impermeable individual packaging sheet;
An absorbent body that is disposed on the upper side of the individual packaging sheet and contains a superabsorbent resin and can absorb an aqueous liquid;
A backup sheet that is disposed between the individual wrapping sheet and the absorbent body and can absorb and hold an aqueous liquid ;
A hydrophobic non-woven fabric, a liquid-impermeable back sheet or a highly breathable / water-resistant barrier sheet disposed on the lower side of the absorbent body and the upper side of the backup sheet ,
The individual packaging sheet has a bag-like liquid storage part that forms an internal space on the upper side at the rear,
An absorbent article, wherein a rear end portion of the absorbent body is present in the internal space of the liquid storage section.
(2) The absorbent article according to (1), wherein a rear end portion of the backup sheet is present in the internal space of the liquid storage portion.
(3) The absorbent article according to (1), wherein the backup sheet is folded at the rear side of the rear end portion of the absorber, and the rear end portion of the backup sheet exists on the upper side of the absorber.
(4) The backup sheet is folded at the rear side of the rear end portion of the absorber, and is folded at the front side of the front end portion of the liquid storage portion of the individual packaging sheet, and the rear end portion of the backup sheet is The absorbent article according to the above (1), which exists on the upper side of the liquid reservoir.
(5) The backup sheet is folded at the rear side of the rear end portion of the absorber, and is folded at the front side of the front end portion of the liquid storage portion of the individual packaging sheet, and the rear end portion of the backup sheet is The absorbent article according to the above (1), which exists on the rear side of the liquid reservoir.
(6) Further, an aqueous liquid is held on the upper side of the absorber, part of which is present in the internal space of the liquid storage part and the other part is exposed from the internal space of the liquid storage part. The absorbent article according to any one of the above (1) to (5), comprising a transferable leakage prevention sheet.
(7) The absorbent article according to (6), wherein the transmission leakage prevention sheet is folded back on the front side of the front end portion of the liquid storage portion.
(8) The individual packaging sheet is composed of a laminate of a liquid-impermeable sheet and a hydrophobic nonwoven fabric,
The absorbent article according to any one of (1) to (7), wherein the hydrophobic nonwoven fabric is present on the upper side and / or the lower side of the liquid-impermeable sheet.
(9) At least the inner surface of the individual packaging sheet is constituted by a liquid-impermeable sheet,
The backup sheet is composed of a hydrophilic nonwoven fabric,
The absorbent article according to any one of (1) to (7), wherein the absorbent article is a laminate in which the liquid-impermeable sheet and the hydrophilic nonwoven fabric are integrally formed.
(10) The individual wrapping sheet has an individual wrapping sheet main body part and a pair of wing parts present on both right and left sides of the individual wrapping sheet main body part,
The absorbent article according to any one of (1) to (9), wherein the pair of wing parts can be coupled to each other on both the upper side and the lower side of the individual packaging sheet main body part.
(11) The absorbent article according to (10), wherein each of the pair of wing portions has a pressure-sensitive adhesive so that the pair can be bonded to each other.
(12) The pair of wing portions have a male member on one side and a female member on the other side, and the male member and the female member are fitted to each other so that they can be coupled to each other. The absorbent article according to (10) above.
(13) The absorbent article according to any one of (1) to (12), wherein the individual packaging sheet has a pressure-sensitive adhesive that can adhere to the inner surface of the wearer's underwear when worn.
(14) The absorbent article according to any one of (1) to (13), wherein the individual packaging sheet has a non-slip member on the lower surface that makes it difficult to slip with the inner surface of the wearer's underwear.
(15) The absorbent article according to any one of (1) to (14), wherein the individual packaging sheet has a pair of side barrier portions rising on the left and right sides on the upper side.
(16) The absorbent article according to any one of (1) to (15), which is an incontinence pad.
(17) The absorbent article according to any one of (1) to (15), which is a sanitary napkin.

  The absorbent article of the present invention can be functioned at the time of wearing without discarding the material used for individual packaging, and is less likely to leak.

It is a schematic diagram which shows the example of the absorber article | item of this invention. It is a schematic diagram which shows another example of the absorber article | item of this invention. It is a typical top view which shows another example of the absorber article | item of this invention. It is a schematic diagram which shows another example of the absorber article | item of this invention. It is a schematic diagram which shows another example of the absorber article | item of this invention. It is a schematic diagram which shows another example of the absorber article | item of this invention. It is a typical vertical end view which shows the various examples of the absorber article | item of this invention. It is a typical perspective view which shows another example of the absorber article | item of this invention. It is a typical perspective view which shows another example of the absorber article | item of this invention. It is a typical top view which shows another example of the sheet | seat for individual packaging. It is a typical top view which shows another example of the sheet | seat for individual packaging. It is a typical top view which shows another example of the sheet | seat for individual packaging. It is a typical top view which shows another example of the sheet | seat for individual packaging. It is a typical top view which shows the various examples of the sheet | seat for individual packaging. It is a typical top view which shows the various examples of the sheet | seat for individual packaging. It is a schematic diagram which shows another example of the sheet | seat for individual packaging. It is a schematic diagram which shows another example of the sheet | seat for individual packaging. It is a schematic diagram which shows another example of the sheet | seat for individual packaging. It is a schematic diagram which shows another example of the absorber article | item of this invention. It is a schematic diagram which shows the Example of the absorber article | item of this invention. It is a schematic diagram which shows another Example of the absorbent article of this invention.

  Hereinafter, an absorbent article according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings. In the present specification, when the absorbent article of the present invention is actually worn, the side closer to the wearer's skin is referred to as “upper” and the far side is referred to as “lower”. Further, when the absorbent article of the present invention is actually worn, the side corresponding to the front side of the wearer's body is referred to as “front”, and the side corresponding to the rear side is referred to as “rear”. Moreover, in order to make an understanding easy in each figure, the member which is actually contacting may be shown spaced apart.

  FIG. 1 is a schematic diagram illustrating an example of an absorbent article according to the present invention. 1A is a plan view, and FIG. 1B is a vertical end view taken along line IB-IB in FIG. 1A. In each plan view in the attached drawings, the front side of the absorbent article or the like is positioned on the upper side of the drawing. Further, in each longitudinal end view in the attached drawings, the front side of the absorbent article or the like is shown on the left side of the figure.

The absorbent article 100 of the present invention basically contains a liquid-impermeable individual packaging sheet 10 and a superabsorbent resin arranged on the upper side of the individual packaging sheet 10 and can absorb an aqueous liquid. It comprises an absorbent body 12 and a backup sheet 14 that is disposed between the individual packaging sheet 10 and the absorbent body 12 and can hold an aqueous liquid.
The individual packaging sheet 10 is not particularly limited in material, configuration, and the like as long as it is liquid-impermeable. Examples thereof include a liquid-impermeable sheet, a laminate of a liquid-impermeable sheet and a hydrophobic nonwoven fabric (for example, a highly water-resistant nonwoven fabric), and a laminate of a liquid-impermeable sheet and a hydrophilic nonwoven fabric.
Examples of the liquid-impermeable sheet include a film of a resin such as PE, PP, PET, and EVA; a foamed sheet of the resin; and a highly water-resistant nonwoven fabric. As the liquid-impermeable sheet, a sheet having air permeability such as a gas-permeable film is also preferably used.

The individual packaging sheet is composed of a laminate of a liquid-impermeable sheet and a hydrophobic nonwoven fabric, and the hydrophobic nonwoven fabric is present on the upper side and / or the lower side of the liquid-impermeable sheet. This is one of the preferred embodiments.
The individual packaging sheet is composed of a laminate of a liquid impermeable sheet and a hydrophobic nonwoven fabric, and the hydrophobic nonwoven fabric is present on the upper side of the liquid impermeable sheet. The porous structure of the hydrophobic non-woven fabric is preferable in that the surface of the hydrophobic non-woven fabric is uneven, and the effect of preventing body fluid from collecting and flowing in one direction is also achieved.
The individual packaging sheet is composed of a laminate of a liquid-impermeable sheet and a hydrophobic nonwoven fabric, and the aspect in which the hydrophobic nonwoven fabric is present on the lower side of the liquid-impermeable sheet is the appearance and feel of the absorbent article. It is preferable at the point which becomes the outstanding thing.
The embodiment in which the individual packaging sheet is composed of a laminate of a liquid-impermeable sheet and a hydrophobic nonwoven fabric, and the hydrophobic nonwoven fabric is present on the upper side and the lower side of the liquid-impermeable sheet is the two modes described above. There are both advantages.

In the absorbent article 100, the individual packaging sheet 10 and the backup sheet 14 are independent members, but the absorbent article of the present invention is not limited to this. For example, the individual packaging sheet and the backup sheet are integrated. Two or more of each member may be integrally formed.
Specifically, for example, at least the inner surface of the individual packaging sheet is constituted by a liquid-impermeable sheet, the backup sheet is constituted by a hydrophilic nonwoven fabric, and the liquid-impermeable sheet and the hydrophilic nonwoven fabric are integrally formed. The formed laminate is one of the preferred embodiments of the present invention. In this aspect, by arranging the laminate in which the liquid-impermeable sheet and the hydrophilic nonwoven fabric are integrally formed so that the hydrophilic nonwoven fabric is on the upper side, the hydrophilic nonwoven fabric portion functions as a backup sheet. And the part of a liquid-impermeable sheet can function as an individual packaging sheet.

The individual packaging sheet 10 has a bag-like liquid storage portion 16 that forms an internal space S on the upper side at the rear.
The liquid storage part 16 can be formed, for example, by folding one liquid-impermeable sheet in the front-rear direction and heat-sealing the peripheral edge part by heat-sealing.

  The individual packaging sheet 10 may be composed of a plurality of members.

  The absorbent body 12 is not particularly limited as long as it contains a superabsorbent resin and can absorb an aqueous liquid. For example, a powdery absorbent body such as powdered wood pulp or unprocessed SAP may be used. However, in consideration of the form stability, the possibility of falling off, etc., a sheet-like absorber is preferable. Especially, the sheet-like absorber formed by coating the said highly water-absorbent resin on a nonwoven fabric is preferable.

Among the sheet-like absorbent bodies, one preferred embodiment is a superabsorbent sheet containing SAP of 50% by mass or more, preferably 60 to 95% by mass.
The highly water-absorbent sheet is an ultrathin sheet-like absorbent body mainly composed of SAP. The superabsorbent sheet has a very small thickness because the SAP content is extremely high. The thickness of the superabsorbent sheet is preferably 1.5 mm or less, and more preferably 1 mm or less.
As long as the superabsorbent sheet is an ultra-thin sheet-like absorbent body mainly composed of SAP, the configuration and the production method are not particularly limited.
For example, a super absorbent sheet obtained by the Air Laid method can be mentioned. The Air Laid method is a method in which pulverized wood pulp and SAP are mixed, a binder is added, and the resultant is formed into a sheet shape to obtain a highly water-absorbent sheet. As a highly water-absorbent sheet obtained by this method, for example, NOVATHIN (registered trademark) manufactured by Rayonier in the United States and B-SAP manufactured by Oji Kinocross are known.
Moreover, the superabsorbent sheet (SAP sheet | seat) obtained by the method of coating the dispersion | distribution slurry of SAP on bodily fluid permeable sheets, such as a nonwoven fabric, is also mentioned. Here, it is preferable that the SAP dispersion slurry is obtained by dispersing SAP and microfibrillated cellulose (MFC) in a mixed solvent of water and ethanol. As a highly water-absorbent sheet obtained by this method, MegaThin (registered trademark) manufactured by Japan Absorbent Technology Laboratory is known, for example.
In addition, for example, a superabsorbent sheet obtained by a method in which a large amount of SAP is supported on a raised nonwoven fabric and fixed with a hot melt binder, emulsion binder, aqueous fiber, etc., and fibrous SAP is mixed with PET (polyethylene terephthalate) fiber And a superabsorbent sheet obtained by a method of forming a web, and a SAP sheet in which the top and bottom of the SAP layer are sandwiched between tissues.
The absorber may be combined with other members such as a top sheet and a side barrier. Further, as will be described later, another member such as a wing may be further coupled to another member coupled to the absorber.

The absorbent body 12 is disposed on the upper side of the individual packaging sheet 10, and the rear end portion thereof exists in the internal space S of the liquid storage unit 16. With such a structure, when body fluid such as urine or blood is discharged to the upper side of the individual packaging sheet 10, it is directly absorbed by the absorber 12. Further, when a large amount of bodily fluid is discharged in a short time and the discharging speed of the bodily fluid exceeds the absorbing speed of the bodily fluid by the absorber 12, the non-absorbed bodily fluid is temporarily stored in the liquid storage unit 16 and then absorbed. The body 12 can be absorbed from its rear end.
In general, the amount of bodily fluid discharged from the wearer is not constant and varies greatly, so bodily fluids may be discharged in large amounts. Further, for example, there is a case where the amount of urine discharged in the initial stage is large even when the total amount of urine discharged is not large, such as urge incontinence. Further, for example, it may be used only when the menstrual blood volume is large, such as a night napkin.
Thus, the liquid storage part 16 plays the role which stores a bodily fluid, when a large amount of bodily fluid is discharged | emitted in a short time.
The liquid storage unit 16 also plays a role of receiving body fluid drip and not contaminating the surroundings when the absorbent article 100 is detached after use. Hereinafter, urine will be described as an example of body fluid.

The backup sheet 14 is disposed between the individual packaging sheet 10 and the absorbent body 12, and a large amount of urine is discharged in a short time, and urine that is not absorbed by the absorbent body 12 is disposed above the individual packaging sheet 10. In the case where it exists other than 16, for example, it has a function of holding urine in order to prevent the urine from leaking out of the absorbent article by flowing over the side gathers and flowing out to the side or oozing from the front and rear. Play.
The present inventor has continually studied about the cause of urine leakage. As a result, it became clear that transmission leaks occurred with a considerable frequency.
Here, transmission leakage leaks through the wearer's skin, leaks or oozes through the surface and peripheral edge (for example, both sides, front end, rear end) of each member of the absorbent article. It means to do. A transmission leak is a leak that occurs even if the capacity of the absorbent body of the absorbent article is sufficient. Generally, the amount of leakage is small and leaks in a oozing manner. Such transmission leakage is likely to occur when urine present without being absorbed inside the absorbent article moves left and right or back and forth depending on the position and movement of the wearer.

  The material of the backup sheet 14 is not particularly limited as long as it can hold an aqueous liquid, and is, for example, a hydrophilic nonwoven fabric such as cotton gauze; A spun lace such as rayon spun lace and cotton spun lace; a material used as the absorber 12 described above (for example, a super absorbent sheet obtained by the Air Laid method; a dispersion slurry of SAP on a liquid permeable sheet such as a nonwoven fabric; A superabsorbent sheet obtained by the coating method), and in order to achieve the above function, a material having a higher urine absorption rate and diffusion rate than the material used for the absorber 12 is used. The material of the backup sheet 14 may have less urine absorption per unit volume than the material used for the absorber 12. Specifically, for example, when the superabsorbent sheet obtained by coating the SAP dispersion slurry on a liquid permeable sheet such as a nonwoven fabric is used for both the absorber 12 and the backup sheet 14, the backup sheet 14 is used. The SAP content is made lower than the SAP content in the absorbent body 12.

The arrangement, structure, etc. of the backup sheet 14 are not limited as long as a part of the backup sheet 14 is arranged between the individual packaging sheet 10 and the absorbent body 12.
The backup sheet 14 shown in FIG. 1 is present between the individual packaging sheet 10 and the absorbent body 12 except for the front end portion and the rear end portion, and the front end portion and the rear end portion are the front side and the rear side of the absorbent body 12, respectively. Extends to the side. The backup sheet 14 exists inside the both sides of the absorber 12 in the left-right direction.
The rear end portion of the backup sheet 14 exists in the internal space S of the liquid storage portion 16. In this aspect, the urine storage function of the liquid storage unit 16 and the urine retention function of the backup sheet 14 can cooperate to effectively prevent leakage. Specifically, when the amount of urine that is not absorbed by the absorber 12 increases in the vicinity of the portion where urine is discharged, the urine is quickly held by the backup sheet 14 and moves on the surface or inside of the backup sheet 14. Then, the liquid storage unit 16 is reached. On the other hand, when the amount of urine temporarily stored in the liquid storage unit 16 increases, a part of the urine temporarily stored in the liquid storage unit 16 is transferred from the rear end of the backup sheet 14 to the backup sheet 14. Since it is moved and held, it is possible to prevent the urine from overflowing from the liquid storage unit 16, and thus it is possible to effectively prevent leakage due to the wearer's movement or the like.

The absorbent article 100 of the present invention further includes a seal tape 18.
One end of the seal tape 18 is joined to the center of the front end portion of the individual packaging sheet 10, and an adhesive is applied to the upper surface. Thus, the individual packaging sheet 10 can be folded in two near the center in the front-rear direction so that the adhesive application surface of the seal tape 18 can be attached to and detached from the lower surface of the liquid storage unit 16 or the individual packaging sheet 10. It has become. Therefore, from the time when the absorbent article 100 is manufactured until it is used by the wearer, the individual packaging sheet 10 can be hermetically sealed and maintained in a hygienic state, and the absorbent article 100 can be maintained. When the product is disposed after use, it can be disposed of in a sanitary manner without requiring a bag for packaging the absorbent article 100.
It is preferable that an adhesive is not applied to the tip of the seal tape 18. In this case, this part can be easily pinched with a finger so that the seal tape 18 can be easily attached and detached.

FIG. 2 is a schematic view showing another example of the absorbent article according to the present invention. 2A is a plan view, and FIG. 2B is a vertical end view taken along line IIB-IIB in FIG. 2A.
The absorbent article 100a shown in FIG. 2 is basically the same as the absorbent article 100, except that the backup sheet 14a exists only on the front side (that is, the rear end of the backup sheet 14 is a liquid reservoir). It differs in that it does not exist in the internal space S of the part 16). In this aspect, urine can be held by the backup sheet 14a in the vicinity of the position where urine is discharged. Accordingly, it is possible to prevent the urine from moving to the left or right or back and forth, which causes transmission leakage.

FIG. 3 is a schematic plan view showing still another example of the absorbent article according to the present invention.
The absorbent article 100b shown in FIG. 3 is basically the same as the absorbent article 100a, but the backup sheet 14b extends outward from both sides of the absorbent body 12 in the left-right direction, and its front end absorbs the absorbent article 100b. It differs in that it is on the rear side of the front end of the body 12. In this aspect, urine can be held near the position where urine is discharged more efficiently than the absorbent article 100a.

FIG. 4 is a schematic view showing still another example of the absorbent article of the present invention. 4A is a plan view, and FIG. 4B is a vertical end view taken along line IVB-IVB in FIG. 4A.
The absorbent article 100c shown in FIG. 4 is basically the same as the absorbent article 100, except that the backup sheet 14c is folded back at the rear end of the absorber 12, and the rear end of the backup sheet 14c. Are different from each other in that they exist above the absorber 12. In this aspect, since the amount of the portion existing in the internal space S of the liquid storage portion 16 of the backup sheet 14c is large and the cooperation between the two is strong, the leakage preventing effect of the absorbent article 100 described above is more strongly exhibited. .

FIG. 5 is a schematic view showing still another example of the absorbent article of the present invention. 5A is a plan view, and FIG. 5B is a vertical end view taken along the line VB-VB in FIG. 5A.
The absorbent article 100d shown in FIG. 5 is basically the same as the absorbent article 100c, but the backup sheet 14d is not only folded at the rear side of the rear end portion of the absorbent body 12, but also an individual packaging sheet. 10 also differs in that the back end portion of the backup sheet 14d exists above the liquid storage portion 16 and is also folded back at the front side of the front end portion of the ten liquid storage portions 16. In this aspect, in addition to the leakage preventing effect of the absorbent article 100c described above, the urine that moves to the outside of the absorbent article 100d along the wearer's skin is transferred to the upper side of the liquid storage section 16 of the backup sheet 14d. Since the part which exists in is hold | maintained, there exists a transmission leak prevention effect. In particular, if the shape of the rear end portion of the backup sheet 14d is formed along the groove of the wearer's buttocks, the effect of preventing transmission leakage is increased.
Above all, when the absorbent article of the present invention is an incontinence pad for women, it is important to prevent transmission leakage because urine easily flows along the groove toward the back side (back) due to the body shape unique to women. It becomes. In particular, the incontinence pad for women is required to be reduced in size, and conventionally, it has been difficult to prevent leakage of urine from the back side with the downsized incontinence pad. In the absorbent article 100d, the back-up sheet 14d can extremely effectively prevent urine from leaking backward.
Since the backup sheet 14d is in contact with the absorber 12 mainly in the internal space S of the liquid reservoir 16, the urine held by the backup sheet 14d travels on the surface or inside of the backup sheet 14d due to capillary action or the like. A part of it is finally absorbed by the absorber 12.
Of the various materials described above, cotton gauze, hydrophilic non-woven fabric, and spunlace are preferable as the material for the backup sheet 14d in that urine movement is likely to occur due to capillary action.

FIG. 6 is a schematic view showing still another example of the absorbent article of the present invention. 6A is a plan view, and FIG. 6B is a vertical end view taken along the line VIB-VIB in FIG. 6A.
The absorbent article 100e shown in FIG. 6 is basically the same as the absorbent article 100d, but differs in that the rear end portion of the backup sheet 14e exists on the rear side of the liquid storage section 16. In this aspect, since the area of the portion of the backup sheet 14e exposed on the liquid storage portion 16 is large, urine can be captured at that portion even when leakage occurs. In particular, if the shape of the rear end portion of the backup sheet 14e is formed along the groove of the wearer's buttocks, the effect of preventing transmission leakage is increased.

FIG. 7 is a schematic vertical end view showing various examples of the absorbent article according to the present invention.
The absorbent article 100f shown in FIG. 7A is basically the same as the absorbent article 100, but further differs in that a transmission leakage prevention sheet 20 is provided on the upper side of the absorbent body 12. .
The transmission leakage prevention sheet 20 is not particularly limited as long as it can hold an aqueous liquid, and for example, the same material as that used for the backup sheet 14 described above can be used. Of these, cotton gauze, hydrophilic non-woven fabric, and spunlace are preferred because urine migration is likely to occur due to capillary action. In addition, a sliver that is bundled in a bundle, a synthetic fiber tow subjected to a hydrophilic treatment, and hydrophilic sponges having continuous pores can also be used.
A part of the transmission leakage prevention sheet 20 exists in the internal space S of the liquid storage part 16, and the other part is exposed from the internal space S of the liquid storage part 16.
In the transmission leakage prevention sheet 20, the portion exposed from the internal space S of the liquid storage unit 16 comes into contact with the skin of the wearer w and captures urine transmitted through the skin of the wearer w. Since the transmission leakage prevention sheet 20 is in contact with the absorber 12 mainly in the internal space S of the liquid storage section 16, the urine held by the transmission leakage prevention sheet 20 is prevented from being transmitted due to a capillary phenomenon or the like. It moves along the surface or inside of the sheet 20, and a part thereof is finally absorbed by the absorbent body 12. In this way, the transmission leakage prevention sheet 20 prevents transmission leakage.

The absorbent article 100g shown in FIG. 7B is basically the same as the absorbent article 100f, but is different in that the transmission leakage prevention sheet 20a has its front end portion raised upward. In this aspect, the contact between the transmission leakage prevention sheet 20a and the wearer's w skin is more reliable than the transmission leakage prevention sheet 20, and the transmission leakage prevention effect is further increased.
The absorbent article 100h shown in FIG. 7C is basically the same as the absorbent article 100f, except that the transmission leakage prevention sheet 20b is folded back on the front side of the front end portion of the liquid storage unit 16. Different. In this aspect, the contact area between the transmission leakage prevention sheet 20b and the skin of the wearer w is larger than that of the transmission leakage prevention sheet 20, and the transmission leakage prevention effect is further increased. In order to improve the transmission leakage prevention effect, the contact state between the transmission leakage prevention sheet 20b and the skin of the wearer w is particularly important, and the shape of the rear end portion of the transmission leakage prevention sheet 20b is worn. If it forms along the groove | channel of a person's buttocks, the transmission leak prevention effect will become larger.
The absorbent article 100i shown in FIG. 7 (D) is basically the same as the absorbent article 100h, but the rear end portion of the portion present on the upper side of the liquid storage section 16 of the transmission leakage prevention sheet 20c is the liquid. It differs in that it exists on the rear side of the reservoir 16. In this aspect, since the area of the portion exposed on the liquid storage portion 16 of the transmission leakage prevention sheet 20c is large, urine can be captured at that portion even when leakage occurs. In particular, when the shape of the rear end portion of the transmission leakage prevention sheet 20c is formed along the groove of the wearer's buttocks, the transmission leakage prevention effect is increased.
The width of the transmission leakage preventing sheet is not particularly limited as long as a part of the width can be present in the internal space of the liquid storage unit.
The transmission leakage prevention sheet may be bonded to the upper surface of the liquid storage part with an adhesive or the like. Whether or not to join can be appropriately selected according to the material, shape, size, and the like of the transmission leakage prevention sheet.
For example, when the transmission leakage prevention sheet is thin and bulky like a tape-like polyurethane foam having a width of about 20 mm, the transmission leakage prevention sheet is positioned at the center in the left-right direction on the upper surface of the liquid storage unit. Thus, it is preferable to fix it to the upper surface of the liquid reservoir.
In addition, when the transmission leakage prevention sheet is a relatively bulky nonwoven fabric such as a cotton spunlace having a width of about 40 mm (for example, a basis weight of 40 g / m ² ), it is worn when the transmission leakage prevention sheet is wet. Since it is easy to adhere to a person's skin, it is preferable not to fix to a liquid storage part in order to make use of the property and follow a movement of a wearer's body.
Furthermore, when the transmission leakage prevention sheet is a relatively wide and thin nonwoven fabric such as a TCF nonwoven fabric having a width of about 50 mm or more (for example, a basis weight of 25 g / m ² ), the position of the transmission leakage prevention sheet does not shift. In addition, it is preferable to fix both the left and right edges of the transmission leakage prevention sheet to the upper surface of the liquid storage part.

FIG. 8 is a schematic perspective view showing still another example of the absorbent article according to the present invention. FIG. 8A is a diagram showing a state of being folded in three, and FIG. 8B is a diagram showing an opened state. In FIG. 8, the backup sheet is omitted.
The absorbent article 100j shown in FIG. 8 is basically the same as the absorbent article 100, except that the individual packaging sheet 11 is placed on the left and right sides of the individual packaging sheet main body 22 and the individual packaging sheet main body 22. It differs in that it has a pair of wing portions 24 that exist, and the pair of wing portions 24 can be coupled to each other on either the upper side or the lower side of the individual packaging sheet main body portion 22. The absorbent article 100j does not have a seal tape.
As shown in FIG. 8 (B), the absorbent article 100j has a male member 26 below the right wing portion 24 and a female member 28 above the left wing portion 24. On the upper side of the individual packaging sheet main body portion 22, the right wing portion 24 is folded, and then the left wing portion 24 is folded, whereby the left wing portion 24 is placed on the male member 26 of the right wing portion 24. The female member 28 comes into contact with the male member 26 and the female member 28 so that they can be coupled to each other.

The absorbent article 100j is in a state of being folded in three in the front-rear direction on both sides of the pair of wing parts 24 as shown in FIG. 24 are coupled to each other on the upper side of the individual packaging sheet main body 22. Thereby, the sanitary condition of the absorber 12 etc. which exists inside the sheet | seat main-body part 22 for individual packaging is maintained favorably. Thus, by having a pair of wing parts 24, even if it does not have a sealing tape, a sanitary state can be maintained favorable.
Immediately before use, when the pair of wing parts 24 are uncoupled and the individual packaging sheet main body part 22 that has been folded in three is opened, the central part to which the wing parts 24 are joined, the rear part having the liquid storage part 16, and The front part where the absorber 12 is exposed appears (see FIG. 8B).
In use, the left wing 24 is folded under the individual packaging sheet main body 22 so as to be placed inside the underwear and to wrap the crotch part of the underwear in the same manner as when attaching a general sanitary napkin. After that, by folding the right wing portion 24, the female member 28 of the left wing portion 24 and the female member 26 of the right wing portion 24 are fitted and coupled to each other. Thereby, the gap between the underwear and the absorbent article 100j can be suppressed.
After use, the absorbent article 100j is removed from the undergarment and folded in three in the front-rear direction on both sides of the pair of wing portions 24, as shown in FIG. Thereby, the absorbent article 100j can be discarded without urine coming into contact with the outside.

In the present invention, like the absorbent article 100j, the individual packaging sheet has an individual packaging sheet main body portion and a pair of wing portions present on the left and right sides of the individual packaging sheet main body portion, In a preferred embodiment, the pair of wing portions can be coupled to each other on either the upper side or the lower side of the individual packaging sheet main body portion.
The aspect in which the pair of wing portions can be coupled to each other is not particularly limited. For example, the pair of wing portions may have a pressure-sensitive adhesive so that they can be coupled to each other. Further, as in the absorbent article 100j, the pair of wing portions includes one male member and the other female member, and the male member and the female member are fitted to each other, thereby You may be in the state which can be couple | bonded.

FIG. 9 is a schematic perspective view showing still another example of the absorbent article according to the present invention. FIG. 9A is a diagram showing a state of being folded into two before use, and FIGS. 9B and 9C are diagrams showing a state of being opened immediately before use, and FIG. ) Is a view of the folded state after use. In FIG. 9, the backup sheet is omitted.
The absorbent article 100k shown in FIG. 9 is basically the same as the absorbent article 100j, but is different in that it has the sealing tape 18 like the absorbent article 100.

The absorbent article 100k is in a state of being folded in two in the front-rear direction on the front side of the pair of wing portions 24, as shown in FIG. It adheres to the liquid storage part 16 of the individual wrapping sheet 11, and the sanitary state of the absorbent body 12 and the like existing inside the individual wrapping sheet main body part 22 is well maintained.
Immediately before use, the sealing tape 18 is detached from the liquid storage portion 16 of the individual packaging sheet 11 and the individual packaging sheet main body portion 22 that has been folded in half is opened (see FIG. 9B). Next, the pair of wing portions 24 are uncoupled, and the individual packaging sheet main body portion 22 that has been folded in half is opened (see FIG. 9C).
At the time of use, by placing the left wing portion 24 on the lower side of the individual packaging sheet main body portion 22 so as to be placed inside the underwear and wrapping the crotch portion of the underwear, the right wing portion 24 is folded, The female member 28 of the left wing portion 24 and the female member 26 of the right wing portion 24 are fitted and coupled to each other. Thereby, the shift | offset | difference with underwear and the absorber article | item 100k can be suppressed.
After use, the absorbent article 100k is removed from the underwear, and as shown in FIG. 9 (D), it is folded in three in the front-rear direction on both sides of the pair of wing portions 24, and the sealing tape 18 is individually wrapped. And the pair of wings 24 are coupled to the upper side of the tri-fold individual packaging sheet main body 22. Thereby, the absorbent article 100j can be discarded without urine coming into contact with the outside. In addition, since the three-fold state is maintained by the coupling at the two locations, the three-fold state is easily maintained even when handled roughly at the time of disposal, as compared with the case of the absorbent article 100j.

Hereinafter, various aspects of the individual packaging sheet used for the absorbent article of the present invention will be described in detail.
FIG. 10 is a schematic plan view showing still another example of the individual packaging sheet. FIG. 10A is a diagram in a state where a pair of wing portions are opened, and FIG. 10B is a diagram in a state where the pair of wing portions are folded.
In the individual packaging sheet 11a shown in FIG. 10, the individual packaging sheet main body 22a and the pair of wing parts 24a are formed by making four cuts c in the rectangular individual packaging sheet material. Yes. Since the individual packaging sheet 11a is formed by cutting the c into the rectangular individual packaging sheet material in this way, it is possible to suppress the occurrence of useless parts that are not used as individual packaging sheets during manufacturing. Can do.
The individual wrapping sheet 11a has a pair of wing portions 24a bent inward along the dotted line in FIG. At the time of use, as shown in FIG. 10 (B), the pair of wing parts 24a are folded to the opposite side so as to wrap around the crotch part of the underwear uw and coupled together.

FIG. 11 is a schematic plan view showing still another example of the individual packaging sheet. FIG. 11A is a diagram in a state where a pair of wing portions are opened, and FIG. 11B is a diagram in a state in which the pair of wing portions are folded.
The individual packaging sheet 11b shown in FIG. 11 is basically the same as the individual packaging sheet 11a. However, the individual packaging sheet main body 22b and the pair of the individual packaging sheet main body 22b formed by the shape of the notch c are different. The shape of the wing part 24b is different.
The individual wrapping sheet 11b has a pair of wings 24b bent inward along the dotted line in FIG. At the time of use, as shown in FIG. 11 (B), the pair of wings 24b is bent to the opposite side and joined together so as to wrap the crotch part of the underwear uw.

FIG. 12 is a schematic plan view showing still another example of the individual packaging sheet. FIG. 12A is a diagram showing a state where two pairs of wing portions are opened, and FIG. 12B is a diagram showing a state where two pairs of wing portions are folded.
The individual wrapping sheet 11c shown in FIG. 12 has an individual wrapping sheet main body portion 22c, and has two pairs of wing portions 24c on the front and rear sides on both sides of the individual wrapping sheet main body portion 22c.
In the individual packaging sheet 11c, two pairs of wing portions 24c are bent inwardly along the dotted line in FIG. At the time of use, as shown in FIG. 12 (B), the two pairs of wings 24c are bent to the opposite sides so as to wrap around the crotch part of the underwear uw, and are coupled to each other. Thus, the individual wrapping sheet main body portion 22c can more effectively suppress the deviation from the underwear uw by having two pairs of wing portions 24c.
Further, the individual packaging sheet 11c is configured such that the shape of the individual packaging sheet main body portion 22c spreads from the center to the front side and the rear side. Thereby, the individual wrapping sheet main body portion 22c easily matches the shape of the crotch part of the underwear uw, and the deviation from the underwear uw is more effectively suppressed.
After use, of the two pairs of wings 24c, the front pair is folded inward and folded into two, and then the rear pair is joined to the upper side of the folded individual sheet body 22c. And can be discarded.

FIG. 13 is a schematic plan view showing still another example of the individual packaging sheet. FIG. 13A is a view showing a state where a pair of wing portions are opened, and FIG. 13B is a view showing a state where the pair of wing portions are folded.
The individual packaging sheet 11d shown in FIG. 13 has an individual packaging sheet main body portion 22d and a pair of wing portions 24d.
The individual wrapping sheet 11d has a pair of wing portions 24d bent inward along the dotted line in FIG. At the time of use, as shown in FIG. 13 (B), the pair of wings 24c are bent to the opposite side so as to wrap around the crotch part of the underwear uw.
The individual packaging sheet 11d has such a shape that slits are formed before and after the joint portion between the individual packaging sheet main body portion 22d and the pair of wing portions 24d. Thereby, the edge part of the crotch part of the underwear uw becomes easy to bite into the slit between the sheet main body portion 22d for individual packaging and the pair of wing portions 24d, and the deviation from the underwear uw is more effectively suppressed. . If the portion where the slit is formed is reinforced (for example, by reinforcement by application or application) with a material (for example, synthetic rubber) that is difficult to slip between the underwear uw, the shift is further effectively suppressed.

FIG. 14 is a schematic plan view showing various examples of individual packaging sheets.
The individual packaging sheet 11e shown in FIG. 14A has an individual packaging sheet main body portion 22e and a pair of wing portions 24e, and the width in the left-right direction of the individual packaging sheet main body portion 22e is a pair of wing portions. It becomes wider after 24e. In this aspect, there is an advantage that the width of the liquid storage section 16 is widened and the volume of the internal space formed by the liquid storage section 16 is increased. Moreover, since the width of the liquid storage part 16 becomes wide, the length of the liquid storage part 16 in the front-rear direction can also be designed to be short.
The individual packaging sheet 11f shown in FIG. 14B has an individual packaging sheet main body portion 22f and a pair of wing portions 24f, and the width in the left-right direction of the individual packaging sheet main body portion 22f is a pair of wing portions. It is narrower than before 24e. In this embodiment, the backup sheet (not shown) disposed on the upper side of the individual packaging sheet 11f is widened in the left-right direction to increase the amount of urine that can be temporarily absorbed. The storage part 16 can be made more compact.

FIG. 15 is a schematic plan view showing various examples of individual packaging sheets.
The individual packaging sheet 11g shown in FIG. 15A has an individual packaging sheet main body portion 22g and a pair of wing portions 24g, and the liquid storage portion 16 has a front end portion that is straight in the left-right direction. It has become.
The individual packaging sheet 11h shown in FIG. 15B has an individual packaging sheet main body portion 22h and a pair of wing portions 24h, and the liquid storage portion 16a has a central portion in the left-right direction in the shape of the front end. Is shorter and longer toward the left and right sides. In this aspect, the exposed area of the absorber (not shown) in the central portion is larger than in the aspect of the individual packaging sheet 11g shown in FIG.
The individual packaging sheet 11i shown in FIG. 15C has an individual packaging sheet main body portion 22i and a pair of wing portions 24i, and the liquid storage portion 16b has a front end portion whose central portion is in the left-right direction. Is longer and shorter toward the left and right sides. In this aspect, compared with the aspect of the individual packaging sheet 11g shown in FIG. 15 (A), the exposed area of the absorber (not shown) in the central portion is reduced, and urine leaks backward. It is hard to occur.

FIG. 16 is a schematic view showing still another example of the individual packaging sheet. 16A is a plan view, and FIG. 16B is a lateral end view taken along line XVIB-XVIB in FIG.
The individual wrapping sheet 11j shown in FIG. 16 has an individual wrapping sheet main body portion 22j and a pair of wing portions 24j, and has a pressure-sensitive adhesive 30 that can adhere to the inner surface of the wearer's underwear when worn. . Thereby, the shift | offset | difference with the underwear uw is suppressed more effectively.
The type of the adhesive 30 is not particularly limited as long as it can adhere to the inner surface of the wearer's underwear when worn.
Although the adhesive 30 exists over substantially the whole length of the front-back direction of the lower surface of the individual packaging sheet main body 22j, the present invention is not limited to this. For example, it exists only in the front part, exists only in the rear part, or exists in a plurality of places (for example, an arrangement extending in the front-rear direction on the left and right sides (two places)) Also good.

FIG. 17 is a schematic diagram showing still another example of the individual packaging sheet. 17A is a plan view, and FIG. 17B is a lateral end view taken along line XVIIB-XVIIB in FIG. 17A.
The individual packaging sheet 11k shown in FIG. 17 has an individual packaging sheet main body portion 22k and a pair of wing portions 24k, and a non-slip member 32 that makes it difficult to slip on the inner surface of the wearer's underwear when worn. Have. Thereby, the shift | offset | difference with the underwear uw is suppressed more effectively.
The material of the non-slip member 32 is not particularly limited as long as it is a material that makes it difficult to slip on the inner surface of the wearer's underwear when worn. An example is urethane foam.
The anti-slip member 32 exists only in the front side portion of the lower surface of the individual packaging sheet main body 22k, but the present invention is not limited to this. For example, it exists over almost the entire length in the front-rear direction, exists only in the rear part, or exists in multiple places (for example, an arrangement that extends in the front-rear direction on both the left and right sides (two places)) May be.

FIG. 18 is a schematic view showing still another example of the individual packaging sheet. 18A is a plan view, and FIG. 18B is a lateral end view taken along line XVIIIB-XVIIIB in FIG. 18A.
The individual packaging sheet 11l shown in FIG. 18 has an individual packaging sheet main body part 22l and a pair of wing parts 24l, and also has a pair of side barrier parts 34 rising upward on the upper side.
The side barrier portion 34 is a pleated member that can be expanded and contracted by inserting rubber into the inside of the non-woven fabric, and on the upper side surface of the individual packaging sheet body portion 22l of the individual packaging sheet 11l, It extends to.
In the present invention, the shape, structure, and the like of the side barrier portion are not limited to this aspect, and for example, the same materials as those of conventional inner gathers and outer gathers can be used.
Further, the side barrier portion 34 does not extend to the front end and the rear end of the individual packaging sheet 11l. However, in the present invention, the side barrier portion 34 extends to the front end and / or the rear end of the individual packaging sheet. May be.
The side barrier portion 34 can suppress the movement of urine in the left-right direction that causes transmission leakage.

FIG. 19 is a schematic view showing still another example of the absorbent article of the present invention. 19A is a plan view, and FIG. 19B is a lateral end view taken along line XIXB-XIXB in FIG. 19A.
An absorbent article 100l shown in FIG. 19 is basically the same as the absorbent article 100, except that the absorbent body 12 is covered with a hydrophobic nonwoven fabric on the lower side, and the hydrophobic nonwoven fabric is an absorbent body. 12 is different in that it has a pair of side barrier portions 34a that are formed to rise upward from both the left and right sides, and a pair of wing portions 24m on the left and right sides of the hydrophobic nonwoven fabric. In this aspect, since the wing part and the side barrier part are integrated with the absorber, the shape of the individual packaging sheet can be made into a very simple shape (for example, a rectangle like the individual packaging sheet 22). it can.

As mentioned above, although the absorber article of the present invention was explained based on each embodiment of illustration, the present invention is not limited to these, for example, the composition of each part is arbitrary which can exhibit the same function Can be replaced with configuration.
Moreover, it can also be set as another embodiment by combining arbitrarily the structure of each part in each embodiment.

  The absorbent article of the present invention is suitably used for any use for adult men, adult women, and children. Among them, it is suitably used as a female incontinence pad and sanitary napkin.

  Hereinafter, the present invention will be specifically described with reference to examples. However, the present invention is not limited to these.

FIG. 20 is a schematic view showing an example of an absorbent article according to the present invention. 20A is a plan view, and FIG. 20B is a lateral end view taken along line XXB-XXB in FIG. 20A.
The absorbent article 100m shown in FIG. 20 is basically the same as the absorbent article 100j, except that the backup sheet 14f is folded at the rear side of the rear end of the absorbent body 12a, and the liquid of the individual packaging sheet 11m is obtained. The absorber 12a is also covered with the side sheet member 36 at the lower side of the front side of the storage part 16, the back end of the backup sheet 14f existing above the liquid storage part 16, and the absorber 12a. The side sheet member 36 has a pair of side barrier portions 34b formed to rise upward from the left and right sides of the absorbent body 12a. The left and right edges 38 of the side sheet member 36 are further bent outward at the side barrier portion 34b. The absorbent body 12a is folded at the center as shown in the figure, and rises upward on both the left and right sides of the absorbent body 12b. The top sheet 42 is disposed on the side where the acquisition layer 40 is disposed, and further on the upper side of the acquisition layer 40, and the top sheet 42 covers up to the upper side of the left and right edges where the absorber 12a is raised. It is different in point.
Since the left and right edge portions 38 of the side seat member 36 are further bent outward in the side barrier portion 34b, the opening width of the side barrier portion 34b can be increased.
Since the absorber 12a is folded at the center as shown in the figure, the absorption capacity of the absorber can be increased, and the diffusion of absorbed urine in the front-rear direction can be further promoted. . Further, since the absorbent body 12a rises upward on both the left and right sides, it suppresses the flow of urine to the left and right edges, and also supports the side barrier part 34b when worn, and reduces its sag. Leakage on both sides is less likely to occur.
Since the acquisition layer 40 is arranged on the upper side of the absorbent body 12b and the top sheet 42 is further arranged on the upper side, the absorption / diffusion state of the discharged urine is more stable, and the wearer has a better wearing feeling. Become.

The individual packaging sheet 11m is composed of a laminate of a nonwoven fabric and a moisture-permeable PE film (weight per unit area 37 g / m ² , manufactured by Daika Kogyo Co., Ltd.).
The absorber 12a is configured by an SAP sheet (weight per unit area: 200 g / m ² , MegaThin (registered trademark), manufactured by Nippon Absorber Technology Laboratory Co., Ltd.).
The backup sheet 14f is composed of a TCF nonwoven fabric (weight per unit area 20 g / m ² , manufactured by Phutamura Chemical Co., Ltd.).
The male member 26 and the female member 28 are constituted by a mechanical coupling member (manufactured by Sumitomo 3M).
The side sheet member 36 of the side barrier portion 34b is composed of an SMS nonwoven fabric (weight per unit area 15 g / m ² , manufactured by Avgor).
The left and right edge portions 38 of the side barrier portion 34b are made of an elastic material having a 170% elongation (Lycra 620Dtex, manufactured by Toray DuPont).
The acquisition layer 40 is constituted by a bulky air-through nonwoven fabric (weight per unit area: 40 g / m ² , manufactured by Kuraray Co., Ltd.).
The top sheet 42 is composed of an air-through nonwoven fabric (a basis weight of 20 g / m ² , manufactured by Kuraray Co., Ltd.).
In FIG. 20, the numerical values indicate dimensions, and the unit is “mm”. The present invention is not limited to this size.

FIG. 21 is a schematic view showing another example of the absorbent article according to the present invention. 21A is a plan view, and FIG. 21B is a lateral end view along the line XXIB-XXIB in FIG. 21A.
The absorbent article 100n shown in FIG. 21 is basically the same as the absorbent article 100m, except that the backup sheet 14g is not folded back at the rear side of the rear end of the absorbent body 12b, etc. The point which has the transmission leak prevention sheet | seat 20d folded by the front side of 16 front-end parts, the point which the absorber 12b is folded by both right and left as shown in figure, and the absorber 12b do not stand up on both sides The difference is that a liquid-impermeable back sheet 44 is provided below the absorber 12b and above the backup sheet 14g.
Since the absorber 12b is folded on both the left and right sides as shown in the figure, the absorption capacity of the absorber can be increased, and urine flowing in the left-right direction can be diffused in the front-rear direction.
The backup sheet 14g and the transmission leakage prevention sheet 20d have the same functions as the backup sheet 14f.
Since it has the back sheet | seat 44, a double leak-proof body is formed with the sheet | seat 11m for individual packaging, and it becomes difficult to produce a leak.
The same effect as described above can be obtained by using a highly breathable / water resistant barrier sheet having a buffer effect described in WO 02/090106, instead of the back sheet 44. it can.

Individual packaging sheet 11, absorbent body 12b, backup sheet 14g, male member 26 and female member 28, side sheet member 36 of side barrier portion 34b, left and right edges 38 of side barrier portion 34b, acquisition layer 40 and top The sheet 42 is made of the same material as the absorbent article 100m.
The transmission leakage prevention sheet 20d is composed of a cotton spunlace nonwoven fabric (weight per unit area: 45 g / m ² , manufactured by Unitika Ltd.).
The back sheet 44 is composed of a moisture-permeable PE film (weight per unit area 25 g / m ² , manufactured by Mitsui Chemicals).
In FIG. 21, the numerical values indicate dimensions, and the unit is “mm”. The present invention is not limited to this size.

10, 11, 11a, 11b, 11c, 11d, 11e, 11f, 11g, 11h, 11i, 11j, 11k, 11l, 11m Packaging sheet 12, 12a, 12b Absorber 14, 14a, 14b, 14c, 14d, 14e, 14f, 14g Backup sheet 16, 16a, 16b Liquid reservoir 18 Seal tape 20, 20a, 20b, 20c, 20d Transmission leakage prevention sheet 22, 22a, 22b, 22c, 22d, 22e, 22f, 22g, 22h, 22i , 22j, 22k, 22l Individual packaging sheet main body 24, 24a, 24b, 24c, 24d, 24e, 24f, 24g, 24h, 24i, 24j, 24k, 24l, 24m Wing part 26 Male member 28 Female member 30 Adhesive 32 Non-slip member 34, 34a, 34b Side barrier Part 36 Side sheet member 38 Left and right edges 40 Acquisition layer 42 Top sheet 44 Back sheet 100, 100a, 100b, 100c, 100d, 100e, 100f, 100g, 100h, 100i, 100j, 100k, 100l, 100m, 100n Absorber Article S Internal space uw Underwear w Wearer

Claims (17)

Liquid-impermeable individual packaging sheets;
An absorbent body that is disposed on the upper side of the individual packaging sheet and contains a superabsorbent resin and can absorb an aqueous liquid;
A backup sheet that is disposed between the individual wrapping sheet and the absorbent body and can absorb and hold an aqueous liquid ;
A hydrophobic non-woven fabric, a liquid-impermeable back sheet or a highly breathable / water-resistant barrier sheet disposed on the lower side of the absorbent body and the upper side of the backup sheet ,
The individual packaging sheet has a bag-like liquid storage part that forms an internal space on the upper side at the rear,
An absorbent article, wherein a rear end portion of the absorbent body is present in the internal space of the liquid storage section.   The absorbent article according to claim 1, wherein a rear end portion of the backup sheet exists in the internal space of the liquid storage portion.   The absorbent article according to claim 1, wherein the backup sheet is folded back at a rear side of the rear end portion of the absorber, and a rear end portion of the backup sheet exists on the upper side of the absorber.   The backup sheet is folded at the rear side of the rear end portion of the absorber, and is folded at the front side of the front end portion of the liquid storage portion of the individual packaging sheet, and the rear end portion of the backup sheet is the liquid storage portion. The absorbent article according to claim 1, wherein the absorbent article is present above the portion.   The backup sheet is folded at the rear side of the rear end portion of the absorber, and is folded at the front side of the front end portion of the liquid storage portion of the individual packaging sheet, and the rear end portion of the backup sheet is the liquid storage portion. The absorbent article according to claim 1, which is present on the rear side of the section.   Further, a part of the absorber that is present in the internal space of the liquid reservoir and the other part of the absorber is exposed from the internal space of the liquid reservoir. The absorbent article according to any one of claims 1 to 5, comprising a leakage prevention sheet.   The absorbent article according to claim 6, wherein the transmission leakage prevention sheet is folded at the front side of the front end portion of the liquid storage portion. The individual packaging sheet is composed of a laminate of a liquid-impermeable sheet and a hydrophobic nonwoven fabric,
The absorbent article according to any one of claims 1 to 7, wherein the hydrophobic nonwoven fabric is present on an upper side and / or a lower side of the liquid-impermeable sheet. At least the inner surface of the individual packaging sheet is constituted by a liquid-impermeable sheet,
The backup sheet is composed of a hydrophilic nonwoven fabric,
The absorbent article according to any one of claims 1 to 7, wherein the absorbent article is a laminate in which the liquid-impermeable sheet and the hydrophilic nonwoven fabric are integrally formed. The individual wrapping sheet has an individual wrapping sheet main body portion and a pair of wing portions present on the left and right sides of the individual wrapping sheet main body portion,
The absorbent article according to any one of claims 1 to 9, wherein the pair of wing parts can be coupled to each other on either the upper side or the lower side of the individual packaging sheet main body part.   The absorbent article according to claim 10, wherein each of the pair of wing portions has a pressure-sensitive adhesive so that the pair can be bonded to each other.   The pair of wing portions has a male member on one side and a female member on the other side, and the male member and the female member are fitted to each other so that they can be coupled to each other. Item 11. The absorbent article according to Item 10.   The absorbent article according to any one of claims 1 to 12, wherein the individual packaging sheet has a pressure-sensitive adhesive that can adhere to the inner surface of the wearer's underwear when worn.   The absorbent article according to any one of claims 1 to 13, wherein the individual wrapping sheet has a non-slip member on the lower surface that makes it difficult to slip with the inner surface of the wearer's underwear when worn.   The absorbent article according to any one of claims 1 to 14, wherein the individual packaging sheet has a pair of side barrier portions that rise upward on the upper side surface on both the left and right sides.   The absorbent article according to any one of claims 1 to 15, which is an incontinence pad.   The absorbent article according to any one of claims 1 to 15, which is a sanitary napkin.

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