JP5096183B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a disposable diaper.

  A pant having a pocket that can store a disposable body warmer has been proposed (see Patent Document 1). This does not include an absorber that absorbs excrement such as urine. On the other hand, a pants-type diaper having a pocket that can store a heating element or the like in the pocket has been proposed, and a general nonwoven fabric is disclosed as an exterior sheet of the diaper and is generally used as a heating element. A disposable body warmer is disclosed (see Patent Document 2).

Utility Model Registration No. 3013735 JP 2005-46226 A

  An object of this invention is to provide the absorbent article in which the vapor | steam thermal heat generated from the water vapor | steam generation means is provided effectively to a wearer. In addition, the present invention can apply the above-mentioned steam temperature to a predetermined part of the wearer's body to improve frequent urination and incontinence, and can be suitably used for excretion care of elderly people or care recipients. The purpose is to provide an absorbent article.

  The present invention is an absorbent article having an absorbent body and an outer packaging material disposed closer to the skin non-contacting surface than the absorbent body, wherein at least a part of the outer packaging material includes an elastic stretch sheet and an elastic non-elastic material. The above object is achieved by an absorbent article having a wavy uneven region composed of an elastic sheet and having water vapor generating means disposed in the region.

  The absorptive article of the present invention has the outstanding effect that steam temperature generated from water vapor generating means can be given to a wearer effectively. Further, the absorbent article of the present invention can effectively apply the above-mentioned excellent steam temperature to a predetermined part of the wearer's body in order to improve frequent urination, incontinence, etc. It can be suitably used for excretion care.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view schematically showing a pants-type disposable diaper as a preferred embodiment of the absorbent article of the present invention in a substantially worn shape. FIG. 2 is an enlarged cross-sectional view taken along the line II-II of the diaper shown in FIG. FIG. 3 is a developed plan view schematically showing the diaper material opened and stretched by the side seal portion 9 in the state shown in FIG. 1 as viewed from the inside. 4 is a cross-sectional view taken along line IV-IV of the developed diaper shown in FIG. FIG. 5 is an enlarged sectional view of the water vapor generating means 1 shown in FIG.

  The diaper 10 of this embodiment has an absorbent body 8 and an outer packaging material 2 positioned on the non-skin contact surface side of the absorbent body 8, and the water vapor generating means 1 is disposed on the outer packaging material 2. . Here, the outer packaging material 2 is in an unfolded state (see FIG. 3), and both side edges thereof have a shape constricted inward (X direction) at the longitudinal center portion (the crotch portion 16). This can be gently bent inward near the center of the diaper crotch 16 to form the article form of the pant-type diaper 10 shown in FIG. Here, the diaper crotch part 16 becomes a part along the crotch of the wearer when the wearer wears the diaper 10, and the front body part 15 f and the back body part 15 r are mainly along the lower abdomen and waist circumference of the wearer, respectively. It becomes a part to be done. And when the front body part 15f and the back body part 15r of the outer packaging material 2 are joined as mentioned above, this part will comprise the waist part 15, and the underpants type which has the waist opening part 3 and a pair of leg opening part 4 A diaper 10 is formed. At this time, the method for joining the side seal portions is not particularly limited, and for example, a heat seal method, an ultrasonic seal method, or the like is used.

  In the diaper 10 of the present embodiment, an elastic non-stretchable sheet 23 is disposed as a sheet material constituting the inner side of the outer packaging material 2 (see FIGS. 1 to 4). As the sheet material constituting the outer side of the outer packaging material 2, an elastic stretchable sheet 21 is disposed on the upper part of the diaper (trunk part) 15, and an elastic non-stretchable sheet 22 is disposed on the lower part of the diaper (lower crotch part) 16. Has been. Here, the structure of the outer packaging material 2 will be described in more detail with reference to the developed sectional view shown in FIG. 4. In this embodiment, the sheets 21 (21a, 21b), 22, 23. In the crotch part 16 that forms the center of the developed diaper, an elastic non-stretchable outer sheet 22 is laminated on an elastic non-stretchable inner sheet 23. In the front body portion 15f, an elastic stretchable outer sheet 21a is laminated on the elastic non-stretchable inner sheet 23, and in the rear body portion 15r, an elastic stretchable outer sheet 21b is laminated on the elastic non-stretchable inner sheet 23. Has been.

By dividing the outer packaging material 2 into different sheet configurations by dividing the diaper upper part (the waistline part) 15 and the diaper lower part (the crotch part) 16 as described above, different functions can be imparted to each of the two. For example, as will be described later, a sheet structure having good air permeability in the upper part of the diaper 15 in relation to water vapor generating means, and a liquid-impermeable sheet structure in the diaper lower part 16 to prevent liquid leakage from the absorber. It can be. In other words, in the diaper 10 of the present embodiment, the outer packaging material 2 has a functional configuration for each region in consideration of the function of applying steam temperature by the steam generating means, and specifically, the outer sheet 21 (sheets 21a and 21b). ) Is used as an elastic stretchable sheet, and elastic non-stretchable sheets are used as the sheets 22 and 23, so that each region exhibits a specific action.
In the present invention, the term “elastic stretch sheet” means that the maximum elongation of the sheet (elongation at the maximum load at which the sheet can be extended) is 100% or more, and the sheet is stretched up to 100% in a predetermined direction. An elongation recovery rate when contracted after being expanded, that is, an elongation recovery rate at 100% elongation is 70% or more. Hereinafter, the “elastic stretch sheet” may be simply referred to as “stretch sheet”. Here, the elongation recovery rate is measured by the following method.
[Measurement method of elongation recovery rate]
Prepare a sample piece of an elastic sheet with a length of 50 mm and a width of 25 mm, and use a tensile tester (“Tensilon” RTC-1150A [trade name] manufactured by Orientec Co., Ltd.) to place the sample piece at a chuck interval K0. After fixing and stretching at a speed of 300 mm / min to the length K2 when stretched to 100% (K2 = K0 × 2), the tensile force was released at the same speed as the tensile speed, and the stress became zero Let the length of the sample piece at that time be the length K1 after recovery from elongation. From this measurement result, the extension recovery rate at 100% extension is calculated by the following equation.
Elongation recovery rate at 100% elongation (%) = [(K2−K1) / (K2−K0)] × 100 When there are a plurality of directions in which the maximum elongation is 100% or more, only one of these directions The elastic stretch sheet in the present invention also includes those exhibiting the maximum elongation and elongation recovery rate.

  On the other hand, in the present invention, the “elastic non-stretchable sheet” refers to a sheet material other than the “elastic stretchable sheet”, and may be simply referred to as “non-stretchable sheet”. A typical elastic non-stretchable sheet includes a sheet having a maximum elongation of less than 50% and a stretch recovery rate of less than 30%. Things. When the breakage occurs in such a non-stretchable sheet, since the fiber structure is not restored, the normal elongation recovery rate is almost zero.

  In the diaper 10 according to the embodiment, at least a part of the outer packaging material is composed of an elastic stretchable sheet material and an elastic non-stretchable sheet material, and this portion forms a plurality of convex portions. It is said that. Here, the “wavy uneven region (A)” refers to a region where a plurality of convex portions can be formed on the skin contact surface and / or non-skin contact surface of the outer packaging material. Even if there is a gap between them, if it is functionally continuous, it means a region including each convex part and the gap. In the diaper 10 of this embodiment, the inner non-stretchable sheet 23 is convex so as to protrude toward the skin contact surface side in the diaper upper portion 15 to constitute a wavy uneven region (A) (see FIG. 1). ).

  Below, the wave-like uneven | corrugated area | region (A) in the diaper of this embodiment is demonstrated more concretely with FIGS. In this embodiment, the diaper waist part 15 (the front body part 15f and the back body part 15r) of the outer packaging material 2 is formed by directly overlapping the stretchable sheet 21 (sheets 21a and 21b) on the non-stretchable sheet 23, This portion is configured to be a wavy uneven region (A). Here, the stretchable sheet 21 is laminated on the non-stretchable sheet 23 in a state where the stretchable sheet 21 is appropriately stretched during manufacture, and is assembled into a diaper shape. That is, in the diaper material in the unfolded state (see FIG. 3), the stretchable sheet 21 is in an elastically stretched state. When the diaper 10 (see FIG. 1) is assembled into a natural shape, the elastic sheet 21 is released from its elastic extension state and contracts to a predetermined extension recovery state. On the other hand, the non-stretchable sheet 23 has almost no change in the elastomechanical state between the unfolded state (see FIG. 3) and the assembled state in the diaper (see FIG. 1), and hardly contracts. Due to the difference in elastic elasticity between the laminated stretchable sheet 21 and non-stretchable sheet 23 generated here, a plurality of convex portions are formed on the surface of the wavy uneven area (A) of the outer packaging material 2. That is, after the stretchable sheet 21 is laminated and bonded to the non-stretchable sheet 23 in the stretched state, the stretched state is released to a natural state, whereby the non-stretchable sheet 23 is deformed and the convex portion 18 is formed. Is done. The plurality of convex portions 18 formed in this way are formed such that the non-stretchable sheet 23 rises in a convex shape on the opposite side of the stretchable sheet 21, and a tunnel is formed inside the convex portion 18. A space 7 is formed. At this time, if the sheet surface is fluffy, a relatively sparse fiber state is formed in the space 7. Heat is accumulated by the heat insulating action of the tunnel-like space formed in the interior, so that the heat retaining property in the absorbent article is enhanced, and in particular, the effect of the water vapor generating means described later can be transmitted to the wearer without waste.

  In the diaper of this embodiment, the elastic stretchable sheet 21 and the elastic non-stretchable sheet 23 are overlapped in the wavy uneven region (A), and project toward the opposite side of the elastic stretchable sheet 21. Thus, the elastic non-stretchable sheet 23 is bent into a convex shape to form a plurality of convex portions 18. The plurality of convex portions 18 are continuously provided around the waist of the wearer so as to protrude softly toward the skin contact surface side when viewed from the elastic stretchable sheet 21 (see FIG. 2). In other words, the convex portion 18 is formed by a drape-like ridge that appears in the thickness direction of the outer packaging material 2, and each ridge is formed to extend in the wearer's height direction. Here, since the outer packaging material 2 fits the wearer's skin moderately, the convex portion 18 may be somewhat crushed from the illustrated shape, but the convex shape is somewhat retained, and the convex portion The heat insulation effect by maintaining the inner space 17 from the outer space is maintained. Further, the non-stretchable sheet 23 exhibits a draping property in accordance with the movement of the wearer, and a good heat insulating effect is maintained while the shape of the good convex portion 18 or the tunnel-like space 17 is deformed or reproduced. The

  In the present embodiment, the elastic stretchable sheet 21 and the elastic non-stretchable sheet 23 in the wavy uneven region (A) are joined to the side seal portion 9 (see FIG. 1) and the seal portions 2a and 2b (see FIG. 4). It is good also as a state which does not carry out, or it is good also as a state joined appropriately. Although this joining state is not particularly limited, for example, the stretchable sheet 21 and the non-stretchable sheet 23 are joined intermittently in the waistline direction in order to regularly form the convex portions 18 extending in the height direction over a plurality of strips. May be. That is, for example, the non-stretchable sheet 23 may be intermittently joined to the stretchable sheet 21 at the position where the base 19 is formed in the waistline direction. Further, the thickness and hardness of the non-stretchable sheet 23 in the convex portion 18 and the base portion 19 are alternately changed, or a sheet material with alternating creases is used as a non-stretchable sheet in a predetermined direction. The convex portion 18 may protrude. In addition, in this embodiment, although the seal part 2a is made into the form which joins the elastic stretch sheet 21 and the elastic non-stretch sheet | seat 23, as another embodiment, it is the elastic stretch at the diaper body length direction edge part in a manufacturing process. The length of the elastic sheet member may be designed to be longer than the length of the elastic non-stretchable sheet member, and the long portion may be folded back toward the elastic non-stretchable sheet and bonded on the skin contact surface side.

  In the present embodiment, the inner sheet (non-stretchable sheet) 23 and the outer sheet (non-stretchable sheet) 22 constituting the diaper lower part 16 are bonded over the entire surface where both overlap. Any joining method may be used at this time, but the joining may be performed using a pressure-sensitive adhesive or the like usually used for bonding a nonwoven fabric. In the cross section shown in FIG. 4, the leg gathering elastic member 6 is disposed and fixed between the bonded sheets 23 and 22. The elastic member 6 for leg gathers is arranged along the entire end portion of the leg opening, and is fixed so that the end of the elastic member faces the center of the diaper at the center of the crotch part c (FIG. 3). reference). The elastic member 6 is arranged on the diaper material in an expanded state in an expanded state, and when it is assembled into a pants-type diaper form to form a natural shape, the elastic member 6 is contracted and contracted to form a leg gather. A moderate tightening force can be obtained.

  In the present embodiment, as shown in FIG. 4, the inner sheet (non-stretchable sheet) 23 and the outer sheet (stretchable sheet) 21 constituting the diaper upper portion 15 may be appropriately joined. In the seal portion 2a for fixing the elastic member 5 for use, it is preferable to join both sheets. This elastic member 5 for waist gathers is arrange | positioned so that the edge part of a waist opening part may be followed (refer FIG. 3), and this elastic member 5 is arrange | positioned in the expanded state in the diaper raw material of an expansion | deployment state. By doing so, when the side seal portion 9 is joined and assembled into the shape of a pants-type diaper, the elastic member 5 becomes a natural shape and is deflated and contracted, forming a waist gather and forming an appropriate waist circumference. Tightening force can be obtained. As the elastic member 5 for waist gathers and the elastic member 6 for leg gathers, elastic materials such as natural rubber, polyurethane resin, foamed urethane resin, and hot melt elastic member are each made of thread (thread rubber) or belt (flat rubber). ) Is preferably used. Furthermore, in the diaper of the present embodiment, the outer sheet (elastic sheet) 21 in the diaper upper part 15 and the outer sheet (non-elastic sheet) 22 in the diaper lower part 16 are joined by the seal portion 2b (see FIG. 4). .

  In the upper part 15 (15f, 15r) of the diaper, the area of the inner sheet 23 is made larger than the area of the stretchable outer sheet 21 (21a, 21b) when not stretched (when weak), and an appropriate margin is provided for the inner sheet. It is preferable to give it. As a result, the outer sheet (elastic sheet) 21 expands and contracts without being constrained by the inner sheet (non-elastic sheet) 23, and the convex part 18 or the non-joining part (space) 17 as described above forms the tunnel-shaped space 7. A shape to be formed is obtained. Further, when the outer sheet (elastic sheet) 21 is stretched somewhat when the diaper 10 is worn, the stretchability is not diminished, and the contour of the undulation from the upper buttocks of the wearer to the waist or the undulation of the lower abdomen Can fit to fit. In addition, by making only the inner sheet non-stretchable as in this embodiment, it is possible to improve the feel according to the wearer's request or to adjust the strength of the diaper. Can have a function as a lining.

  In the present embodiment, the configuration of the outer packaging material 2 is not limited to the above-described one, and the stretchable sheet and the non-stretchable sheet are different from the above (for example, the stretchable sheet is applied only to the front body side 15f. Or the number of sheets may be changed.

The basis weight of the wavy-shaped regions in the outer cover 2 of the present embodiment is preferably from 50 to 300 g / ^{m 2,} and more preferably 60 to 150 g / ^{m 2.} When in this range, the water vapor generated by the water vapor generating means 1 is easily maintained in a state of being kept at an appropriate temperature in the diaper, and the effect of the steam heat given to the wearer can be further enhanced. Here, the “basis weight of the undulating uneven area” means a basis weight measured in a natural state (a state where no tensile load is applied) in a developed state of the diaper.

  In the diaper 10 of this embodiment, the absorber 8 is arrange | positioned at the skin contact surface side i (refer FIG. 4) of a diaper. More specifically, it is joined to the inner surface of the inner sheet 23 of the outer packaging material 2. Although this joining method is not particularly limited, for example, it can be joined with an adhesive or the like generally used in the above-described diaper. In the present embodiment, the absorbent body 8 has an effect of improving heat retention. Particularly, by arranging the absorbent body up to the waist part 15 extending to the lower abdomen and the waist, frequent urination, urine leakage, etc. by the water vapor generating means, etc. The effect of improving the symptoms is further increased. The absorbent body 8 may be anything as long as it has a function of absorbing and retaining excreted liquid, etc., for example, a liquid-permeable surface sheet (not shown) disposed on the wearer side, A substantially vertically long three-layered absorbent body having a liquid-impermeable or water-repellent back sheet and a liquid-retaining absorbent core interposed between the two sheets is preferable (shown) However, it is not shown as a three-layer structure). As a material of the absorber, a general material used for diapers or the like can be used. For example, when the absorber having the above three-layer structure is used, a nonwoven fabric or a film having a large number of openings is used as a surface sheet. Can do. A thermoplastic film can be used as the back sheet. This film may have moisture permeability or may be moisture impermeable. As an absorptive core, what is comprised from fiber materials, such as a particle | grains of a superabsorbent polymer, and pulp, and is coat | covered with the tissue paper can be used.

In this embodiment, as shown in FIG. 4, the absorbent body is disposed so as not to overlap the water vapor generating means when the developed diaper material is viewed in plan. In the present invention, when the absorbent article is viewed in plan, when the article is three-dimensionally assembled, such as a pants-type diaper, when it is developed into a planar diaper material, the absorbent article is viewed in the direction of the plan view. Say. On the other hand, in the case of a napkin or an unfolded diaper, this means that the sheet is stretched as it is to have a planar shape and viewed in a plan view. In the present embodiment, the absorbent body 8 has an integral structure along the longitudinal direction. However, as in a diaper 20 which will be described later, a region near the water vapor generating means in the waistline portion 15 or the vicinity thereof, and other crotch portions 16 The region may be divided in the longitudinal direction and separated from each other. By doing so, it becomes difficult for the excreted liquid to move to the absorber part close to the water vapor generating means, and it is possible to suppress the absorbent core of the part from getting wet, thereby reducing the moisture retention. Can be prevented. Further, if the absorbent core present on the side close to the water vapor generating means does not contain a water-absorbing polymer, it is possible to prevent the water vapor generated from the water vapor generating means from being absorbed and retained in the absorbent core. Effectively communicate to the skin. In this case, the basis weight of the pulp fibers forming the absorbent core is preferably 100 to 500 g / m ² , particularly 200 to 450 g / m ² from the viewpoint of moisture retention.

  In the absorbent article of the present embodiment, there is a wavy uneven region (A) that forms a plurality of convex portions at a portion where the stretchable sheet 21 and the non-stretchable sheet 23 overlap, and this wavy uneven region (A). Water vapor generating means 1 is provided so as to face the surface. In the present invention, “facing” means that a specific surface and a specific surface are opposed to each other, and even if the both surfaces are in contact with each other, they are separated partially or entirely through a predetermined gap. It may be. In the diaper 10 of this embodiment, the water vapor generating means 1 is attached and fixed to the diaper non-skin contact surface side o of the stretchable outer sheet 21 constituting the outer packaging material 2 (see FIG. 4). As will be described later, this water vapor generating means is configured to generate water vapor and send it out from a predetermined surface (in the present invention, water vapor means not only vaporized water molecules but also water droplets that are heated and scattered in the air) Used for). By sending the water vapor generated from the water vapor generating means 1 toward the wearer's body, the portion is warmed by the temperature of the water vapor (steam heat). Ordinary disposable warmers simply generate heat without generating water vapor, and the skin of the wearer becomes hot on the surface. On the other hand, when the above-mentioned steam temperature is applied, the temperature is transmitted so as to be warmed from the core of the body, not superficially, with a moderately moist feeling as if a steam towel having an appropriate temperature is attached to the skin. Accordingly, for example, in a care recipient or elderly person having symptoms such as frequent urination and urine leakage, the lower abdomen and the waist can be warmed by steam heat, and an improvement effect that cannot be obtained because it is simply heated on the surface can be given. In addition, since the moisture on the skin is moderately retained by the steam temperature, the drying of the skin that occurs when the heat is transmitted to the surface with a normal disposable body warmer is suppressed, and the skin is moistened while warming. Kept.

The water vapor generating means 1 will be described in more detail.
FIG. 5 is an enlarged view of the portion of the water vapor generating means 1 in the cross sectional view of the diaper of the present embodiment shown in FIG. 4, and is a cross sectional view schematically showing one embodiment of the water vapor generating means. The water vapor generating means 1 of the present embodiment has an outer side surface 1b and an inner side surface 1a, and a water vapor generating body 13 inside is disposed between the inner layer material 12 on the wearer side and the outer layer material 11 on the opposite side. ing.

  The steam generator 13 preferably contains an oxidizable metal, which undergoes an oxidation reaction when the oxidizable metal comes into contact with oxygen, and is heated to a predetermined temperature using heat generated by the reaction. Water vapor is generated. The steam generator 13 generates steam by using heat generated by oxidation of the oxidizable metal, and the steam generating material is not limited to this. For example, heat of neutralization of acid and alkali, inorganic salts (salts) It is also possible to generate water vapor using the heat of hydration of calcium, magnesium chloride, calcium oxide, magnesium oxide, zeolite, etc.). The inner side surface 1a on which the inner layer material 12 is disposed is preferably a surface through which water vapor can permeate. Thereby, the water vapor generated by the water vapor generator 13 passes through the inner layer material 12 and is sent toward the wearer (see the water vapor application direction s).

  The outer surface 1b on which the outer layer material 11 is disposed may be configured to allow air to pass therethrough, so that oxygen for the above-described oxidation reaction can be taken in from the outer side of the wearer via the outer layer material 11 (oxygen uptake). Direction t). At this time, in order to send more water vapor to the wearer in the water vapor application direction s, it is preferable that the water vapor permeability of the outer layer material 11 is lower than that of the inner layer material 12. Further, if oxygen necessary for the above oxidation reaction can be taken from the inner layer material 12 through, for example, the stretchable outer sheet 21, from between the wearer and the water vapor generating means 1 (see oxygen uptake direction u). ), The outer layer material 11 may be a surface that does not substantially allow air and water vapor to pass therethrough. Water vapor generated thereby can be selectively given to the wearer without escaping to the outside.

  As described above, since the water vapor generating means 1 of the present embodiment sends out water vapor to the inner layer material 12 side, when the water vapor generating means 1 is attached to the stretchable sheet 21, the water vapor permeability of the inner side surface 1a is maintained. For example, it is preferable to fix the elastic sheet 21 with an adhesive or the like only by the peripheral edge 1c of the water vapor generating means. In addition, a pocket may be provided in the outer packaging material, and the water vapor generating means may be stored therein.

  Air permeability is a quantitative indicator of permeability in air or water vapor. In the present invention, the air permeability in the water vapor generating means 1 refers to the air permeability (hereinafter also referred to as JIS air permeability) measured by JIS P8117 defined by the time required for 100 ml of air to pass under a constant pressure. . Therefore, a large value of JIS air permeability means that it takes time to pass air or the like, and means that air permeability is low. Conversely, if the value of JIS air permeability is small, it means that air permeability is high.

  In the water vapor generating means 1 of the present embodiment, an embodiment in which the JIS air permeability of the outer layer material 11 is made larger than that of the inner layer material 12 is exemplified. This means that the air permeability of the outer layer material 11 is made lower than that of the inner layer material 12, and specifically, an embodiment in which the outer layer material 11 is made non-breathable or hardly breathable can be mentioned.

When the outer layer material 11 is difficult to breathe, the outer layer material 11 preferably has a JIS air permeability of 10,000 to 120,000 seconds / (100 m1 · 6.42 cm ² ), preferably 30,000 to 90,000 seconds / (100 m1 · 6.42 cm ² ) is more preferable, and 50,000 to 70,000 seconds / (100 ml · 6.42 cm ² ) is particularly preferable. By doing in this way, while outer layer material 11 can take in air inside (refer to oxygen uptake direction t), since water vapor does not easily pass through outer layer material 11, wearer side (water vapor is preferentially passed through inner layer material 12. Sent in the application direction s). Further, since air is taken in from the entire surface of the outer layer material 11, the air is stably supplied over the entire internal space 14 of the water vapor generating means 1, and the water vapor generating body 13 can be uniformly heated. Thereby, vapor temperature heat can be uniformly given to a wearer from the inner layer material 12.

  As described above, the outer layer material 11 is preferably made of anaerobic material. Further, the balance between the air permeability and moisture permeability of the inner layer material 12 is adjusted, and the inflow amount of air into the system and water vapor in a predetermined direction are adjusted. It is preferable that the release amount be within a desired range. From this viewpoint, the ratio of the JIS air permeability of the inner layer material 12 and the JIS air permeability of the outer layer material 11 (inner layer material / outer layer material) is preferably 0.01 to 0.7, preferably 0.1 to 0.5. It is more preferable to set it as 0.2-0.4. In addition, when the non-breathable material is used as the outer layer material 11, there is a mode in which air is supplied to the water vapor generator 13 through the inner layer material 12 (see the air supply direction u).

The JIS air permeability of the inner layer material 12 is preferably 100 to 50,000 seconds / (100 ml · 6.42 cm ² ), regardless of whether the outer layer material 11 is non-breathable or non-breathable. more preferably to 4 ten thousand seconds / (100ml · 6.42cm ^2), and particularly preferably from 10,000 to 30,000 seconds / (100ml · 6.42cm ^2).

  Which sheet material is used as the inner layer material 12 and the outer layer material 11 is considered in consideration of the air permeability, moisture permeability, texture, touch, strength, prevention of leakage of powders such as oxidizable metals, etc. What is necessary is just to determine suitably. As the sheet material that has air permeability and prevents the powder from leaking out, a melt-blown nonwoven fabric or a moisture-permeable film is preferably used. The moisture-permeable film is obtained by forming a melt-kneaded product of a thermoplastic resin and an organic or inorganic filler that is not compatible with the resin into a film shape and stretching it uniaxially or biaxially. It has a structure. As a sheet material used for the purpose of imparting strength, a spunbonded nonwoven fabric is preferably used. Moreover, as a sheet material used for the purpose of improving the texture, a thermal bond nonwoven fabric is preferably used. You may raise the freedom degree which sets the air permeability and moisture permeability of each ventilation surface to a desired value by combining the sheet material which has various air permeability and moisture permeability, and comprising a laminated sheet.

  The steam generator 13 preferably contains an oxidizable metal, a reaction accelerator, an electrolyte, and water, and more preferably contains a fibrous material to form a fiber sheet. At this time, the aqueous solution of electrolyte may be contained in the molded sheet containing the oxidizable metal, the reaction accelerator, and the fibrous material. Examples of such a sheet-like water vapor generator 13 include a sheet-like product produced by wet papermaking, a laminate formed by sandwiching exothermic powder with paper or the like. For forming into a sheet shape, for example, a wet papermaking method described in JP-A-2003-102761 or an extrusion method using a die coater can be used. On the other hand, when the steam generator 13 is made of exothermic powder, the exothermic powder is preferably configured to contain an oxidizable metal, a reaction accelerator, a water retention agent, an electrolyte, and water. At this time, it is preferable to form a sheet to fit the wearer's body. Also, by making it into a sheet, the temperature distribution of heat generation can be made uniform compared to when it is made into powder, and the above fibrous materials usually have a high ability to support oxidizable metals and react with oxygen. This is also advantageous from the standpoint of increased performance.

  Moreover, it is preferable that the thickness of the water vapor generating means 1 is 0.1 to 5 mm, and more preferably 0.3 to 4.0 mm from the point of obtaining good fit when wearing a diaper as described above. . Furthermore, for the same reason, the weight of the water vapor generating means 1 is preferably 1 to 30 g, more preferably 10 to 15 g.

  When the diaper 10 of this embodiment to which the water vapor generating means 1 is attached is worn, warm water vapor is sent to the wearer, and the skin temperature can be raised to 34 to 42 ° C. This temperature can be maintained for 3 hours or longer, for example. At this time, due to the action of steam temperature, a predetermined part of the wearer's body can be warmed comfortably as when taking a bath, for example, gently warming the lower abdomen and waist around which is effective in improving urine leakage, frequent urination, etc. be able to. In the diaper 10 of the present embodiment, the outer sheet 21 in the wavy uneven area (A) to which the water vapor generating means 1 is attached is composed of a stretchable sheet material, so that the water vapor sent out from the water vapor generating means 1 is particularly effective. It penetrates through and reaches the wearer.

Specifically, the air permeability shown below (hereinafter also referred to as KES air permeability) of the wavy uneven area (A) of the outer packaging material in the present invention is the water vapor generating means 1 when the stretchable sheet is stretched 50%. When it is provided on the skin non-contact surface side of the outer packaging material 2, it is preferably 200 cc / cm ² · sec or more, and more preferably 300 cc / cm ² · sec or more. This range is preferable because water vapor can be effectively supplied to the wearer. On the other hand, when the attachment position of the water vapor generating means 1 is on the skin contact surface side of the outer packaging material 2, it is preferably 700 cc / cm ² · sec or less, more preferably 500 cc / cm ² · sec or less. preferable. This range is preferable because it can be held so that the effect of water vapor can be exhibited in the absorbent article. In the present invention, the KES air permeability of the outer packaging material is measured as follows.
Prepare a sample piece of outer packaging material, and use a breathability measuring device (for example, KES-F8-API [trade name] manufactured by Kato Tech Co., Ltd.) in a state where the sample piece is stretched by 50% in the diaper width direction. R (kPa · sec / m) is measured. Using this, the air permeability Q is calculated from the following equation.
Q = 12.5 / R

  In the diaper 10 of the present embodiment, the stretchable sheet normally has a stretch rate of 30 to 60% when worn, so that the air permeability when worn is substantially increased to the KES breathability when stretched (breathability). Has been increased). Therefore, the water vapor permeability of the stretchable sheet is further enhanced at the time of wearing, and the warm water vapor delivered from the water vapor generating means 1 is effectively applied to the wearer's skin as cannot be obtained by using a non-stretchable sheet. Is granted. In the present invention, unless otherwise specified, the elongation rate is represented by (A−B) / B, where “A” is the length when stretched and “B” is the length when not stretched. The percentage of the value. When the stretch ratios of the stretchable sheet are different in the longitudinal direction and the transverse direction, unless otherwise specified, the stretch ratio is the stretch ratio in the direction of the maximum maximum elongation described later.

Further, since the stretchable sheet expands and contracts over the entire sheet surface, the space between the wearer and the diaper or inside the diaper is three-dimensionally deformed according to the movement of the wearer, and the entry and exit of air and water vapor is promoted. Specifically, in the diaper 10 of the present embodiment, the elastic outer sheet 21 expands and contracts on the surface in the wide area of the front body part 15f in accordance with the movement of the lower abdomen of the wearer. 21 and the non-stretchable inner sheet 23 are partially bonded, the shape of the non-joining portion (space) 17 between the outer sheet 21 and the inner sheet 23 changes three-dimensionally (see FIG. 3). This space 17 forms the tunnel-like space 7 when the non-stretchable inner sheet 23 forms the convex portion 18 when the diaper is worn. As a result, the space volume of the space 17 or the tunnel-like space 7 increases or decreases, acting as if it were a pump, and promoting the delivery of water vapor generated from the water vapor generating means 1 to the wearer side. . On the other hand, the action by steam heat is further enhanced by the heat insulation and heat insulation effect peculiar to the space. The dynamic action resulting from the superposition of the stretchable sheet 21 and the non-stretchable sheet 23 is the same in the back body portion 15r (the waist of the wearer). The same applies to the case where the diaper skin contact surface i is provided.
Furthermore, in the diaper 10 of this embodiment, since it has the wavy uneven | corrugated area | region (A) from which a convex part protrudes on the skin contact surface side, not only the internal space 7 of a convex part but the undulating area | region (A) The heat insulation effect of the space formed between the surface and the human skin is combined with the heat insulation effect of higher steam temperature. In addition, since the contact area with the skin surface is reduced by the undulation of the area (A) indicated by the convex portion, it is effective that the warmed sheet surface excessively contacts the skin and burns at a low temperature. To prevent.

Furthermore, since the diaper upper part 15 which corresponds to the circumference | surroundings of the wearer in the outer packaging material 2 is formed of the elastic sheet, the diaper of this embodiment can obtain the fit of the diaper without using a large number of elastic members. Realized without disturbing the transmission of good steam temperature. That is,
According to the diaper 10 of the present embodiment, since the outer sheet 21 has elasticity, the diaper can be fitted to the body without using a large number of elastic members. For this reason, it is not necessary to bond the inner sheet 23 and the outer sheet 21 with a low-breathing adhesive or the like so as to fix a large number of elastic members (however, the side seal portion 9 and the like are adhesive or the like as necessary) The non-joining portion (space) 17 is held in a wide area. Thereby, the air permeability by the wavy uneven area (A) in which the stretchable sheet 21 and the non-stretchable sheet 23 facing the water vapor generating means are not hindered, and the stretchable sheet itself mentioned above has an increase particularly when stretched. Combined with air permeability, a good steam temperature heat transfer effect can be obtained.

In the case where an adhesive region is provided between the stretchable sheet 21 and the non-stretchable sheet 23 in the wavy uneven region (A) in terms of maintaining good water vapor or air permeability, the region (A) The ratio of the area where the adhesive is applied to the total area is preferably 50 to 95%, and more preferably 55 to 80%. Moreover, even if the stretchable sheet 21 and the non-stretchable sheet 23 are bonded together, the basis weight of the adhesive is 0.5 to 5.0 g / m ² , particularly 1.0 to 3.0 g / m ² . It is preferable from the viewpoint of air permeability and transmission of water vapor heat to the wearer.

Furthermore, the elastic sheet 21 shrinks on the surface along the undulations of the wearer's body, and fits well to the rounded part from the buttocks to the waist and lower abdomen. For this reason, unlike the long elastic member compressed with a line, the fitting property of the water vapor generating means 1 is enhanced. Since the unevenness of the strength of the portion to be pressed steam is suppressed is uniformly applied, good moist heat without temperature unevenness is imparted to the wearer.

  As an elastic sheet, an elastic nonwoven fabric is mentioned, for example. Specifically, for example, a substantially non-elastic non-elastic fiber layer is disposed on at least one surface of the elastic fiber layer, and both fiber layers are in the state of fiber intersections in a state where the constituent fibers of the elastic fiber layer maintain the fiber form. All surfaces are joined by thermal fusion, and a part of the constituent fibers of the non-elastic fiber layer enters the elastic fiber layer and / or a part of the constituent fibers of the elastic fiber layer enters the non-elastic fiber layer. Examples include stretchable nonwoven fabrics that are in a state.

  This stretchable nonwoven fabric is preferred in that it has a soft texture, has sufficient air permeability, does not feel sticky, and further suppresses the occurrence of fuzz. This stretchable nonwoven fabric will be described in more detail with reference to the drawings. FIG. 6 is a cross-sectional view schematically showing a main part of a preferred embodiment of the stretchable nonwoven fabric. In the stretchable nonwoven fabric 90, the same or different substantially inelastic nonelastic fiber layers 92 and 93 are laminated on both surfaces of the elastic fiber layer 91. The elastic fiber layer 91 and the non-elastic fiber layers 92 and 93 are bonded to the entire surface by thermal fusion of fiber intersections in a state where the constituent fibers of the elastic fiber layer 91 maintain the fiber form. That is, the bonded state is different from the stretch bonded nonwoven fabric that is partially bonded.

  In the stretchable nonwoven fabric 90 in which the elastic fiber layer 91 and the non-elastic fiber layers 92 and 93 are bonded to each other, the elastic nonwoven fabric 90 is elastic at the interface between the elastic fiber layer 91 and the non-elastic fiber layers 92 and 93 and in the vicinity thereof. The intersections of the constituent fibers of the fiber layer 91 and the constituent fibers of the inelastic fiber layers 92 and 93 are heat-sealed and are bonded substantially uniformly over the entire surface. By being bonded over the entire surface, floating is prevented between the elastic fiber layer 91 and the non-elastic fiber layers 92 and 93 (a space is formed by separating both layers). When floating occurs between the two layers, there is no sense of unity between the elastic fiber layer and the non-elastic fiber layer, and the texture of the stretchable nonwoven fabric 90 may be lowered. can get.

  The state in which the constituent fibers of the elastic fiber layer 91 maintain the fiber form means that even if most of the constituent fibers of the elastic fiber layer 91 are given heat, pressure, etc., a film or film-fiber structure The state which is not deformed. Thus, there exists an advantage that sufficient air permeability is provided because the constituent fiber of the elastic fiber layer 91 is in the state which maintained the fiber form.

  In at least one of the two non-elastic fiber layers 92 and 93, a part of the constituent fibers enter the elastic fiber layer 91 and / or a part of the constituent fibers of the elastic fiber layer is at least one of the two. The inelastic fiber layers 92 and 93 are in a state of entering. By being in such a state, integration of the elastic fiber layer 91 and the non-elastic fiber layers 92 and 93 is promoted, and floating between both layers can be more effectively prevented. As a result, the layers are combined with each other following the surface of each layer. In order to make the constituent fibers of the non-elastic fiber layer enter the elastic fiber layer 91 and / or to make the constituent fibers of the elastic fiber layer enter the non-elastic fiber layer, it is preferable to use the air-through method.

  The elastic fiber layer 91 can be stretched and has a property of contracting when released from the stretched force. The elastic fiber layer 91 preferably has a residual strain of 20% or less, particularly 10% or less when contracted after 100% elongation in at least one direction parallel to the surface. This value is preferably satisfied in at least one of the MD direction and the CD direction, and more preferably satisfied in both directions.

  The elastic fiber layer 91 is an aggregate of fibers having elasticity, but inelastic fibers may be included as long as the elastic elasticity is not impaired. The elastic fiber may be a continuous fiber or a short fiber. Examples of the method for forming elastic fibers include a melt blown method in which a molten resin is extruded from a nozzle hole, and the molten resin that has been extruded is stretched with hot air to make the fibers thinner, and a semi-molten resin is cooled with cold air. There is also a spunbond method in which stretching is performed by a mechanical draw ratio. There is also a spinning blow method which is a kind of melt spinning method.

  As a constituent fiber of the elastic fiber layer 91, for example, a fiber made from a thermoplastic elastomer, rubber or the like can be used. In particular, fibers made from thermoplastic elastomers can be melt-spun using an extruder in the same way as ordinary thermoplastic resins, and the fibers thus obtained are easily heat-sealed. Is suitable for the stretchable nonwoven fabric of this embodiment. Examples of the thermoplastic elastomer include styrene elastomers such as SBS, SIS, SEBS, and SEPS, olefin elastomers, polyester elastomers, and polyurethane elastomers. These can be used individually by 1 type or in combination of 2 or more types. A core-sheath type or side-by-side type composite fiber made of these resins can also be used. In particular, use of a styrene-based elastomer, an olefin-based elastomer, or a combination thereof is preferable in terms of moldability, elastic properties, and cost of elastic fibers.

  The inelastic fiber layers 92 and 93 have extensibility but are substantially inelastic. The stretchability here refers to the case where the constituent fibers themselves are stretched, and even if the constituent fibers themselves are not stretched, the two fibers that have been heat-sealed at the intersection of the fibers are separated from each other, or the fibers are thermally fused. Any of the cases in which the three-dimensional structure formed by a plurality of fibers is structurally changed by wearing or the constituent fibers are torn, and the entire fiber layer is elongated.

  Examples of the fibers constituting the inelastic fiber layers 92 and 93 include fibers made of polyethylene (PE), polypropylene (PP), polyester (PET or PBT), polyamide, and the like. The fibers constituting the inelastic fiber layers 92 and 93 may be short fibers or long fibers, and may be hydrophilic or hydrophobic. Further, core-sheath type or side-by-side composite fibers, split fibers, irregularly shaped cross-section fibers, crimped fibers, heat-shrinkable fibers, and the like can also be used. These fibers can be used singly or in combination of two or more. The inelastic fiber layers 92 and 93 may be continuous filaments or short fiber webs or nonwoven fabrics. In particular, a short fiber web is preferable because thick and bulky inelastic fiber layers 92 and 93 can be formed. The two inelastic fiber layers 92 and 93 may be the same or different with respect to the material, basis weight, thickness, and the like of the constituent fibers. In the case of a core-sheath type composite fiber, the core is preferably PET or PP, the sheath is preferably a low melting point PET, or PP / PE. In particular, these composite fibers are preferable in that heat fusion with the constituent fibers of the elastic fiber layer preferably including styrene-based elastomer, olefin-based elastomer and the like becomes strong and layer peeling hardly occurs.

The stretchable nonwoven fabric 90 has stretchability in at least one direction in the in-plane direction, but may have stretchability in all in-plane directions. In that case, it is not hindered that the degree of elasticity varies depending on the direction. Regarding the direction of expansion and contraction, the degree of stretchability is preferably 20 to 500 cN / 25 mm, and more preferably 40 to 150 cN / 25 mm when 100% stretched. Further, the residual strain when contracted from the 100% stretched state is preferably 15% or less, and more preferably 10% or less.
The contents described in JP-A-2007-138374 can be referred to as the stretchable sheet 90, and the manufacturing method thereof can be referred to JP-A-2007-84966 and JP-A-2007-22066. May be.

  As the elastic sheet, in addition to the elastic nonwoven fabric 90 described above, for example, a sheet made of the material of the elastic fiber layer 91 used therein may be used as it is as an elastic sheet. For example, the sheet | seat which consists of a thermoplastic elastomer as mentioned above is mentioned, Specifically, you may use the nonwoven fabric which consists of a mixed fiber containing the fiber which consists of a polyurethane elastomer disclosed by Unexamined-Japanese-Patent No. 2004-244791.

In consideration of maintaining water vapor permeability or air permeability, the stretchable sheet preferably has a thickness of 0.5 to 3.0 mm from the viewpoint of obtaining sufficient stretchability and strength. More preferably, it is set to -2.0 mm. Preferably to 20 to 100 g / ^{m 2} for basis weight of the stretchable sheet, it is more preferably a 30 to 60 g / ^{m 2.}

As the non-stretch sheet, a normal nonwoven fabric can be used, but when the water vapor permeability is particularly maintained in the inner sheet 23 of the diaper 10 of the present embodiment, it is preferable to use a spunbond nonwoven fabric or an air-through nonwoven fabric. . From the viewpoints of sufficiently ensuring water vapor permeability, maintaining sufficient strength, and maintaining appropriate flexibility, the nonwoven fabric constituting the inner sheet preferably has a basis weight of 10 to 100 g / m ^2. , and more preferably 15 to 35 g / ^{m 2.} The air permeability of the non-stretchable nonwoven fabric is preferably 400 to 3000 cc / cm ² · sec.

By the way, if the water vapor generated from the water vapor generating means 1 hits the absorber 8 and is absorbed, sufficient provision of water vapor to the wearer is not realized. On the contrary, if the excretory fluid or the like leaks from the absorbent body 8 and reaches the water vapor generating means 1, the generation of water vapor may be affected. Therefore, in the diaper of the present embodiment, a gap t is provided between the absorber 8 and the water vapor generating means 1 (see FIG. 4) so that the water vapor generated from the water vapor generating means 1 does not directly hit the absorber 8. On the contrary, it is preferable that the water vapor generating means is disposed in a portion where the absorber is not disposed so that the liquid does not ooze out from the absorbent body into the water vapor generating means.
At this time, a moisture-impermeable and liquid-impermeable sheet serving as a waist barrier cuff may be provided in the gap t between the water vapor generating means 1 and the absorber 8 as a moisture movement preventing means.

  FIG. 7 is a developed cross-sectional view schematically showing a pants-type diaper 20 of another embodiment of the absorbent article of the present invention (the figure is a cross-sectional view taken along line IV-IV of the developed diaper shown in FIG. 3). Another embodiment is shown.) In the diaper 20 of the present embodiment, the water vapor generating means 1 is provided on the diaper skin contact surface side i. Specifically, the water vapor generating means 1 is attached to the inner surface of the inner sheet 23 of the diaper upper portion 15.

  Here, the surface (inner side surface) 1a to which the water vapor generating means 1 is applied (inner side surface) 1a (the surface on which the inner layer material 12 is arranged in the water vapor generating means shown in FIG. 5) is directed to the wearer side, and the sheet material is It is made to come into contact with the wearer's skin directly without being interposed. On the other hand, the surface (outer side) 1b (surface on which the outer layer material 11 is arranged in the case of the water vapor generating means shown in FIG. 5) opposite to the water vapor generating means 1 sending out the water vapor is the inner sheet 23 of the outer packaging material 2. It is attached to touch.

  In the diaper 20 of the present embodiment, as described above, the inner side surface 1a that imparts water vapor can be brought into direct contact with the wearer's skin without using a sheet material. I can tell you. Moreover, since the inner sheet 23 in contact with the outer surface 1b is formed of a highly breathable non-stretchable sheet and the outer sheet 21 on the outer side is formed of a stretchable sheet, air can be sufficiently taken in from the outside of the diaper. . Such a high aeration effect by the stretchable sheet is the same as that of the diaper 10 described above. Further, the maintenance of the air permeability by not arranging a large number of elastic members between the inner sheet 23 and the outer sheet 21 or requiring the entire surface adhesion with a low air permeability adhesive is also the same. In addition, air is taken in from the inner surface 1a of the water vapor generating means through a gap with the wearer's skin. In this manner, the air permeability and the transmission / warming property of the steam temperature / heat are maintained without the air entering and exiting being blocked by the outer packaging material 2 of the diaper. In the diaper 20 of this embodiment, the absorber 8 is divided into two in the longitudinal direction. More specifically, the absorber 8 is located from the front body side waistline portion 15f where the water vapor generating means 1 is disposed or the absorber member 8a located in the vicinity thereof, from the crotch portion 16 to the back body side waistline portion 15r. It consists of the absorber member 8b. The absorber members 8a and 8b are separated by a separation portion 19. In the diaper 20 of the present embodiment, since the absorbent body 8 and the water vapor generating means 1 are arranged on the same skin contact surface side, the water vapor generating action and the liquid absorbing action of both of them tend to interfere with each other. For this reason, it is preferable to set it as the absorber structure divided | segmented and spaced apart in this way at the point which maintains both functions for a long time. Although the separation distance of the separation part 19 is not specifically limited, It is preferable that it is 5-50 mm from a viewpoint which prevents the transfer of a water | moisture content and does not leak excretion fluid.

  In the diapers 10 and 20 of the above-described embodiment, the embodiment in which one water vapor generating means 1 is attached is shown, but two or more water vapor generating portions may be attached instead. Moreover, in the said embodiment, although the underpants type disposable diaper was shown, it is not restricted to this, It is set as absorbent articles, such as a deployment type disposable diaper provided with the fastening means by a fastening tape, an incontinence pad, and a sanitary napkin. be able to.

It is a perspective view showing typically a pants type disposable diaper as one embodiment of the present invention. It is sectional drawing which expands and shows the II-II line | wire cross section of the diaper shown in FIG. It is the expansion | deployment top view which opened the diaper shown in FIG. 1 in the side seal part, and was seen from the inner side. It is an expanded sectional view which shows the IV-IV line cross section in FIG. It is sectional drawing which expands and shows the water vapor | steam generation means in FIG. It is an expanded sectional view showing typically one embodiment of an elastic nonwoven fabric. It is an expanded sectional view showing typically a diaper in another embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water vapor | steam generation means 2 Outer packaging material 3 Waist opening part 4 Leg opening part 5 Elastic member for waist gathers 6 Elastic member for leg gathers 7 Tunnel-shaped space 8 Absorber 9 Side seal part 10, 20 Pants type diaper 11 Outer layer material 12 Inner layer material 13 Water Vapor Generator 14 Water Vapor Generation Means Internal Space 15 Girth Part (Upper Diaper)
16 Crotch (lower diaper)
17 Non-joint part (space)
18 Convex part 19 Base part 21 Outer packaging upper outer sheet (elastic elastic sheet)
22 Outer packaging material lower outer sheet (elastic non-elastic sheet)
23 Outer packaging inner sheet (elastic non-stretch sheet)
90 Stretchable non-woven fabric 91 Elastic fiber layer 92, 93 Inelastic fiber layer

Claims (9)

An absorbent article having an absorbent body and an outer packaging material arranged on the non-skin contact surface side of the absorbent body, wherein at least a part of the outer packaging material is an elastic stretch sheet and an elastic non-stretch sheet It has a wavy uneven region with a convex part having a tunnel-like space inside ,
An absorbent article in which water vapor generating means is disposed in at least a part of the wavy uneven region.   The convex portion protrudes to the skin contact surface side,
  The water vapor generating means is disposed on the non-skin contact surface side of the outer packaging material, and the water vapor generated from the water vapor generating means is sent into the tunnel-like space of the wavy uneven region, and further the skin contact The absorbent article of Claim 1 which can be permeate | transmitted to the surface side. The absorbent article according to claim 1 or 2, wherein the absorbent article has a waistline part and a crotch part, and the water vapor generating means is arranged at a position for warming a wearer's lower abdomen in the waistline part. The said absorbent article has a waist part and a crotch part, The said water vapor generation means is arrange | positioned in the position which warms a wearer's waist | hip | lumbar part in the said waist part. Absorbent article. The absorbent article according to any one of claims 1-4 basis weight wavy irregular region is 50 to 300 g / ^{m 2} in the outer material. The absorbent article according to any one of claims 1 to 5, wherein the water vapor generating means is disposed in a portion where the absorbent body is not disposed when the absorbent article is viewed in plan. The absorbent article is used along the waistline, the water vapor generating means is disposed in the waistline part of the absorbent article, and the absorber is a part located in or near the waistline part of the absorbent article And the absorbent article of any one of Claims 1-6 divided | segmented into the absorber longitudinal direction so that it may space apart from this and other parts. The absorptive article according to any one of claims 1 to 7 , wherein an air permeability of the wavy uneven region is 200 to 700 cc / cm ² · sec.   The absorption according to any one of claims 1 to 8, wherein the tunnel-like space is formed as a sparse state of fibers by fluffing of an elastic stretchable sheet and an elastic non-stretchable sheet constituting the convex portion. Sex goods.

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