JP5916345B2 - Disposable absorbent article - Google Patents

Description

  The present invention relates to a disposable absorbent article, and more specifically, a disposable urine pad having a grooved absorbent body, a disposable diaper, a disposable toilet training pant, a disposable incontinence pant, a disposable sanitary pant, and the like. The present invention relates to an absorbent article.

  Conventionally, an absorptive article which has a surface sheet, a back sheet, and an absorber arranged between these front and back sheets is publicly known. For example, Patent Document 1 discloses a disposable diaper in which a thin portion with a dimension in the thickness direction made smaller than other portions is formed on an absorbent body. The thin portion extends in the longitudinal direction of the absorber and is formed in a plurality spaced apart in the lateral direction. On the back sheet side of the absorber, an elastic member that provides a contracting force in a direction crossing the thin portion is provided. The thin portions are provided separately from the front portion, the middle portion, and the rear portion arranged in the vertical direction, and these thin portions are discontinuous. The elastic member is provided in a portion where the thin portion is discontinuous between the front portion and the intermediate portion. In this way, by providing the elastic member, the absorbent body and the back sheet are contracted in the lateral direction to form a front gather, and when the intermediate part is sandwiched between the wearer's crotch, it swells away from the body Will not occur and it will be easier to fit between the wearer's crotch.

Japanese Patent No. 3558801 (JP 3558801B)

  In Patent Document 1 as described above, since the elastic member is provided in a portion where the thin portion is discontinuous, contraction in the lateral direction is inhibited by the absorber. In addition, the body fluid flows along the groove formed by the thin portion, but the groove is interrupted by the discontinuous portion, so that the body fluid cannot flow further outward in the vertical direction. Therefore, the body fluid is absorbed by the core material of the absorbent body in the intermediate portion, but the body fluid is not absorbed by the core material of the front surface portion and the rear surface portion, and the core material is discarded while being almost unused. Thus, in patent document 1, there existed a problem that the whole absorber could not be used effectively.

  This invention makes it a subject to provide the disposable absorbent article which can use an absorber effectively in a wide range.

  The present invention has a longitudinal direction and a lateral direction, and has a skin facing surface and a non-skin facing surface that is the opposite side thereof, a front-rear region that extends in the vertical direction, and an intermediate region that is located between the front and rear regions, and the skin A top sheet positioned on the facing surface, a back sheet positioned on the non-skin facing surface, a first absorber positioned between the front and back sheets, and a first extending in the longitudinal direction of the first absorber. The present invention relates to an improvement of a disposable absorbent article including one groove and an elastic body that can shrink in the lateral direction.

In the disposable absorbent article according to the present invention, the first absorbent body has a liquid-absorbing core material, and the groove is formed by the substantial absence of the core material. A pair of side wall surfaces extending in the longitudinal direction continuously from the front and rear regions and extending in the thickness direction of the first absorber, and positioned between the side wall surfaces and formed along the back sheet A front and rear absorbing portion in which the core material is present in substantially the entire region is formed on the outer side in the longitudinal direction of the groove, and the elastic body is located in the intermediate region and includes the groove. It overlaps with this and both ends thereof are attached to extend outward in the lateral direction of the groove, and the surface sheet is disposed along the side wall surface and the bottom surface of the groove, The side wall of the groove when the elastic body contracts There approached by reducing the distance from each other, the first absorbent body includes a central region located at the center of the lateral direction and position to the laterally outward of the central region, rigidity than said central region Both sides of the low stiffness, the both sides of the low stiffness, the mass per unit area is smaller than the central region, extends in the longitudinal direction along the side edges of the first absorbent body, the elasticity The body extends to the outside in the lateral direction of the both sides of the low rigidity, and is attached so as to overlap the both sides of the low rigidity .

  According to one or more embodiments of the present invention in particular, the first absorbent body is formed with a groove extending in the longitudinal direction, and the groove extends continuously from the middle region of the absorbent article to the front-rear region. The body fluid such as urine excreted in the intermediate region can move to the front and back region along the groove. Therefore, the absorber can be effectively used in a wide range.

The perspective view of the disposable urine pad which is one Embodiment of a disposable absorbent article. The top view seen from the skin opposing surface of the expand | deployed urine pad. III-III sectional view taken on the line of FIG. IV-IV sectional view taken on the line of FIG. The top view of the urine pad of other embodiment. The partially notched top view of the urine pad of other embodiment.

  1 to 4, the urine pad 1 has a longitudinal direction Y and a lateral direction X, and includes a front region 11 and a rear region 12, an intermediate region 13 located between these front and rear regions 11, 12, and a lateral direction X. And front and rear end edges 14 and 15 and both side edges 16 extending in the longitudinal direction Y. 2 and 3, each elastic body is shown in a state of being stretched against its contraction force.

  The urine pad 1 has a virtual vertical center line 2-2 that bisects the dimension in the horizontal direction X, and a virtual horizontal center line 3-3 that bisects the dimension in the vertical direction Y. The virtual vertical center line It is made almost symmetrical at 2-2.

The urine pad 1 includes a liquid-permeable and hydrophilic surface sheet 20 located on the skin-facing surface, and a liquid-impervious or liquid-impermeable back sheet 30 located on the non-skin-facing surface on the opposite side. And a first absorber 40 positioned between the sheets 20 and 30. A pair of barrier cuff sheets 50 extending in the vertical direction Y and spaced apart in the horizontal direction X are attached to the topsheet 20.
The front and back sheets 20, 30 have substantially the same shape and size, and the area thereof is larger than that of the absorber 40. The front and back surfaces extend from the longitudinal direction Y and the lateral direction X of the absorber 40, respectively. The sheets 20 and 30 are bonded to each other by a known bonding means such as a hot melt adhesive (not shown).

As the surface sheet 20, for example, a spunbond fiber nonwoven fabric or a point bond fiber nonwoven fabric having a mass of about 15 to 35 g / m ² , preferably about 18 to 23 g / m ² can be used. The backsheet 30, for example, (or less SMS) Weight about 10 to 30 g / m ² spunbond meltblown spunbond fibrous nonwoven fabric, spunbonded nonwoven fabric, or a plastic film at least one of these non-woven fabric Laminate can be used.

As the barrier cuff sheet 50, for example, an SMS fiber nonwoven fabric having a mass of about 10 to 30 g / m ² can be used. The barrier cuff sheet 50 extends in the longitudinal direction Y between the front end edge 14 and the rear end edge 15, and extends in the longitudinal direction Y with the front and rear end edges 51 and 52 extending in the lateral direction X, and is joined to the topsheet 20. It has a proximal edge 53 and a distal edge 54 separable from the face sheet 20. A sleeve is formed on the distal edge 54 by the barrier cuff sheet 50, and a barrier cuff elastic body 55 extending in the longitudinal direction Y is attached to the distal edge 54 so as to be contractable in an extended state. The distal edge 54 is separated from the surface sheet 20 by the contraction force of the barrier cuff elastic body 55, and is closely attached to the wearer's buttocks, thereby preventing body fluid from leaking.

  The absorber 40 extends from the intermediate region 13 to the front and rear regions 11 and 12, and can absorb body fluid in a relatively wide range. The absorbent body 40 is formed by a liquid-absorbing core material 41 and a liquid-diffusible covering sheet 42 such as tissue paper that covers the core material 41. As the core material 41, wood fluff pulp, superabsorbent polymer particles, or a mixture thereof can be used. The core material 41 and the covering sheet 42 are joined to each other using a known joining means such as an intermittently applied hot melt adhesive (not shown).

The absorber 40 has a size in the lateral direction X of the intermediate region 13 smaller than that of the front and rear regions 11 and 12. The intermediate region 13 is located on the virtual horizontal center line 3-3, extends from the vicinity of the virtual horizontal center line 3-3 to the front region 11, and is biased forward of the urine pad 1. The absorber 40 includes a central region 46 located at the center in the lateral direction X and low-rigid side regions 47 located on the outer side in the lateral direction X and having lower rigidity than the central region 46. The low-rigidity both side regions 47 extend in the longitudinal direction Y along both side edges of the absorber 40. In this embodiment, the low-rigidity both-side region 47 has a smaller mass in the core material 41 than the central region 46 and a smaller dimension in the thickness direction. Specifically, the mass of the core material 41 in the central region 46 is about 300 to 700 g / m ² , the dimension in the thickness direction is about 5 to 15 mm, and the mass of the low-rigidity both side regions 47 is about 150 to 400 g / m. ^2. The dimension in the thickness direction can be about 1 to 10 mm. The low-rigidity both-side region 47 is formed continuously in the longitudinal direction Y in the front region 11, the intermediate region 13, and the rear region 12.

<Measurement method of dimension in thickness direction>
The dimension in the thickness direction of the absorber 40 was measured using a thickness measuring device (without spring) manufactured by Peacock. Specifically, the absorbent body 40 is placed on a measurement table, a measurement terminal having a diameter of 50 mm is placed thereon, the absorber 40 is sandwiched by its own weight, and the distance between the measurement table and the measurement terminal is measured. The thickness of the absorber. The mass of the measurement terminal is about 2.3 to 3.6 gf / cm ² , and the measurement is performed in a state where a load is applied to the absorber 40 in this range.

  A plurality of first grooves 43 in which the core material 41 does not exist or substantially does not exist is formed in the central region 46 of the absorber 40. The phrase “the core material is substantially absent” refers to a case where the core material is slightly present but hardly affects the absorption capacity of the absorber 40 and is substantially absent. The groove 43 extends in the vertical direction Y, and is spaced apart in the horizontal direction X. The groove 43 has a pair of side wall surfaces 44 formed by the absorber 40 and extending in the thickness direction, and a bottom surface 45 positioned between the side wall surfaces 44.

  A plurality of elastic bodies 60 extending in the lateral direction X are attached between the absorbent body 40 and the back sheet 30 so as to be contractible in an extended state. The elastic body 60 is attached so as to be separated in the longitudinal direction Y, and is disposed in the substantially middle region 13 of the absorber 40. The elastic body 60 is extended and attached to the outside of both side edges of the absorbent body 40, and the contraction force acts on the entire lateral direction X of the absorbent body 40. The elastic body 60 can be a strand or string having a thickness of about 300 to 940 dtex, preferably about 300 to 600 dtex, and can be attached with an expansion ratio of about 2.0 to 3.0.

Referring to FIG. 2, in the state where the elastic body 60 is extended, the dimension in the lateral direction X of the intermediate region 13 of the urine pad 1 is about 200 mm. The dimension of the groove 43 in the lateral direction X is about 5 to 20 mm, preferably about 8 to 15 mm. The dimension in the longitudinal direction Y of the groove 43 is about 60 to 600 mm, preferably about 80 to 300 mm.
The dimension in the longitudinal direction Y of the urine pad 1 is about 400 to 800 mm, and the dimension in the longitudinal direction Y of the groove 43 is about 15 to 75% of that of the urine pad 1. In such a urine pad 1, no longitudinal groove is formed on the outer side in the longitudinal direction Y of the longitudinal groove 43, that is, front and rear absorbing portions 48 and 49 in which the core material 41 exists are formed. The dimension in the longitudinal direction Y of the rear absorption part 49 is made larger than that of the front absorption part 48.

  The groove 43 can also be formed, for example, by covering the core material 41 with the covering sheet 42 and then simultaneously cutting the core material 41 and the covering sheet 42 with a cutter or the like. In this case, neither the core material 41 nor the covering sheet 42 is present in the groove 43. Alternatively, the core material 41 may be covered with the covering sheet 42 without being stacked on the portion where the groove 43 is formed. In this case, the covering sheet 42 exists in the portion where the groove 43 is formed, and the core material 41 may slightly remain in the groove 43.

  The front and back sheets 20 and 30 are directly bonded to each other at the outer sides of the absorbent body 40 in the longitudinal direction Y and the lateral direction X, and are also opposed to each other at the groove 43, so that known hot melt adhesives and the like are known. Bonded by means. However, when the covering sheet 42 is present in the groove 43, the front and back sheets 20, 30 are bonded to each other via the covering sheet 42, and when the covering sheet 42 is not present, the front and back sheets 20, 30 are Directly glued. In such a urine pad 1, in order to strengthen the adhesion of the front and back sheets 20, 30 in the groove 43, the groove 43 can be pressurized with a roll or the like. Further, the top sheet 20 and the absorber 40 are bonded by a known joining means such as a hot melt adhesive applied to at least one of them, but the adhesive is intermittent in the vertical direction Y and the horizontal direction X. Can be applied. In this case, in order to strengthen the adhesion of the topsheet 20 in the groove 43, an adhesive can be continuously applied in the longitudinal direction Y at a position corresponding to the groove 43. As the adhesive, it is preferable to use an adhesive having high hydrophobicity or high wet strength.

  The dimension of the groove 43 in the lateral direction X is preferably larger than the thickness dimension of the central region 46 of the absorber 40. This is because by increasing the size of the groove 43 in this way, the bonding area of the front and back sheets 20, 30 on the bottom surface 45 of the groove 43 can be increased, and these sheets can be securely bonded. .

  Referring to FIG. 4, when the urine pad 1 as described above contracts in the lateral direction X due to the contraction force of the elastic body 60, the absorbent body 40 which overlaps the urine pad 1 is separated in the lateral direction X of the opposing side wall surface 44 of the groove 43. Reduce the distance and approach. Since the elastic body 60 is attached to the intermediate region 13, the size of the intermediate region 13 in the lateral direction X is further reduced. When the urine pad 1 can be brought into close contact with the wearer by wearing the intermediate region 13 with the dimension in the lateral direction X being reduced in correspondence with the crotch of the wearer, and the wearer moves Even so, the urine pad 1 can be prevented from shifting. The dimension in the lateral direction X of the intermediate region 13 of the urine pad 1 shown in FIG. 4 can be about 130 to 180 mm.

  The elastic body 60 contracts, the separation distance of the side wall surface 44 of the groove 43 is reduced, and the surface sheets 20 positioned on the side wall surface 44 are in contact with each other at a part thereof. Thus, when the side wall surfaces 44 are in contact with each other, the topsheet 20 positioned on the absorption surface of the absorbent body 40 comes into contact with the wearer's skin in a planar manner. Therefore, the irritation | stimulation with respect to the wearer of the surface sheet 20 can be reduced. When the contraction force of the elastic body 60 is large, there is a possibility that even the core member 41 located between the grooves 43 is deformed by the contraction force. Moreover, when the contraction force of the elastic body is small, the groove 43 is not sufficiently contracted, and the topsheet 20 cannot contact the wearer's skin in a planar manner. The thickness and expansion ratio of the elastic body 60 can be changed as appropriate in the relationship between the rigidity of the absorber 40 and the contraction force of the elastic body 60.

  The urine pad 1 can be suitably used for bedridden elderly people, for example. Bedridden wearers often alternate between a supine posture and a sideways posture to prevent pressure ulcers. In particular, when the posture is in the lateral orientation, the excreted urine tends to flow in the lateral direction X of the urine pad 1. However, since the groove 43 is continuously formed in the vertical direction Y, urine that tends to flow in the horizontal direction X can be diffused in the vertical direction Y along the groove 43. The urine diffused in the longitudinal direction Y is further diffused and absorbed in the lateral direction X while being diffused, or absorbed by the front and rear absorption parts 48 and 49 located outside the longitudinal direction Y of the groove 43. When the groove 43 is not formed, urine flows in the lateral direction X in the intermediate region 13, so that it is not transferred to the front and rear regions 11 and 12. Therefore, the core material 41 of the absorber 40 located in the front and rear regions 11 and 12 is almost unused. Moreover, since urine is absorbed only by the core material of the intermediate region 13, urine that could not be absorbed may leak. On the other hand, in the urine pad 1 of this embodiment, since the groove 43 extends to the front and rear regions 11 and 12, the core material 41 located there can be used effectively, and leakage of urine is prevented. You can also.

  When the wearer is in a supine posture, urine tends to flow to the rear region 12, but since the rear absorption part 49 is formed in the rear region 12, the urine can be reliably absorbed and the rear edge It is possible to prevent leakage to the 15 side. Moreover, since the rear absorption part 49 is made wider than the front absorption part 48, the urine which flowed to the rear region 12 can be absorbed more reliably.

  The elastic body 60 is attached to the intermediate region 13, and the groove 43 extends in the longitudinal direction Y beyond the intermediate region 13. Therefore, excrement can be guided along the groove 43 to the front and rear regions 11 and 12 located outside the intermediate region 13, and the intermediate region 13 is moved in the lateral direction X by the contraction force of the elastic body 60. It can be shrunk smoothly. If the groove 43 is formed only in the intermediate region 13, shrinkage in the lateral direction X is hindered by a core material or the like located outside the intermediate groove 13, and the intermediate region 13 may not be sufficiently contracted. Further, when the elastic body 60 is contracted, the groove 43 of the intermediate region 13 is close enough that the topsheets 20 located on the side wall surface 44 partially contact each other or contact each other. The side wall surface 44 of the groove 43 in the front and rear regions 11 and 12 has a larger separation dimension in the lateral direction X than that of the intermediate region 13. Therefore, the urine that has flowed into the front and rear regions 11 and 12 is inhibited from moving to the adjacent core member 41 by the groove 43, and the urine can be made difficult to move in the lateral direction X. Further, by forming the front and rear absorption portions 48 and 49 in the front and rear regions 11 and 12, the rigidity in the outer side in the longitudinal direction Y of the absorbent body 40 can be secured, and the entire absorbent body 40 is prevented from being twisted and worn. The adhesion to the person's skin can be maintained.

  Since the low-rigidity both-side regions 47 are formed on both side edges of the absorber 40, a difference in stiffness occurs with the central region 46. In the absorber 40, it becomes easy to bend in the part which the rigidity difference produced, ie, the boundary of the center area | region 46 and the low-rigidity both-sides area | region 47. FIG. In addition, since the elastic body 60 extends to the outside in the lateral direction X of the low-rigidity both-side regions 47, the low-rigidity both-side regions 47 are easily bent particularly in the region where the elastic body 60 is attached. A barrier cuff sheet 50 is attached to the top sheet 20, and a distal edge 54 of the barrier cuff sheet 50 is disposed so as to overlap the low-rigidity both side regions 47. Since the barrier cuff elastic body 55 is attached to the distal edge portion 54, the low-rigidity both-side areas 47 bend toward the skin facing surface from the boundary with the central area 46 by the contraction force of the barrier cuff elastic body 55. Accordingly, the absorbent body 40 is more easily adhered to the wearer's skin. In this embodiment, in the low-rigidity both-side region 47, the core material is reduced more than in the central region 46. However, since the central region 46 mainly absorbs urine, the core material is reduced on both sides. However, the absorption amount of the absorber 40 as a whole is not greatly affected, and urine leakage or the like is not caused.

  The elastic body 60 is attached between the back sheet 30 and the absorber 40. With such a configuration, when the urine pad 1 is manufactured, the elastic body 60 can be attached without contracting during the manufacturing process, that is, with the stretched state maintained. Specifically, the back sheet 30 is placed on a rotating drum and conveyed, and the stretched elastic body 60 is disposed on the back sheet 30 on the rotating drum, and the stretched state of the elastic body 60 is maintained. Furthermore, the absorber 40 can be laminated. Therefore, the back sheet 30 and the absorber 40 can be stably laminated and bonded while the elastic body 60 is stretched on the rotating drum.

In this embodiment, the dimensions in the longitudinal direction Y of the plurality of grooves 43 are substantially equal, but they may be different. Moreover, the number of the groove 43 may be one and may be two or more.
In the absorber 40, the low-rigidity both-side region 47 is formed in the vicinity of both side edges, but this need not necessarily be formed. The elastic body 60 is a strand or a string, but is not limited to this, and for example, a stretchable fiber nonwoven fabric or the like can be used.

  In this embodiment, the low-rigidity both side regions 47 are formed in the vicinity of both side edges of the core material 41. Further, between the both side edges of the core member 41 and the groove 43 adjacent thereto, there are both a central region 46 and a low-rigidity both-side region 47 having a large mass, which are adjacent to each other. On the other hand, only the low-rigidity both side area | region 47 can also exist between the both-sides edge of the core material 41, and the groove | channel 43 adjacent to this. In this case, a central region 46 exists on the inner side in the lateral direction X of the low-rigidity both-side region 47 across the groove 43. By separating the central region 46 and the low-rigidity both-side regions 47 across the groove 43, the rigidity difference between these regions 46 and 47 can be increased. It becomes easy to bend so as to stand on the skin facing surface.

  In the urine pad 1 as described above, the urine pad 1 can be folded along the groove 43. Specifically, it is folded along the groove 43 so that both side edges 16 of the urine pad 1 are positioned inward in the lateral direction X, and the topsheets 20 are opposed to each other in the folded portion. By folding in this way, a folding line is formed in the longitudinal direction Y along the groove 43. In particular, when a plurality of folded urine pads are stacked and compressed and packaged, a crease is attached along the folding line of the groove 43, and the core material 41 is removed from the groove 43 when worn. It becomes easy to bend toward the wearer. When the outermost groove 43 in the lateral direction X is folded, the vicinity of both side edges of the core material 41 can be further easily bent.

  FIG. 5 shows another example of the present invention. In addition to the first groove 43 extending in the longitudinal direction Y, the second absorption portion 49 extending in the lateral direction X in the rear absorption portion 49 of the absorber 40 is shown. A groove 70 is formed. By forming the second groove 70, it is possible to prevent the urine absorbed in the rear absorption part 49 from moving further in the longitudinal direction Y rearward. Therefore, urine can be further prevented from leaking from the rear edge 15. The second groove 70 can be formed by the same method as the first groove 43. Moreover, in the 2nd groove | channel 70, any of the case where the core material 41 does not exist, the case where it exists, or the case where it exists slightly may be sufficient. When the core material 41 exists, the mass of the core material 41 may be smaller than that of other regions, or the mass of the core material 41 may be the same as that of the other regions, The groove may be formed by compression or the like.

  FIG. 6 shows still another example of the present invention, in which a second absorbent body 71 is further arranged in the rear absorbent portion 49 of the first absorbent body 40. As the second absorbent body 71, for example, a core material 72 using superabsorbent polymer particles covered with a covering sheet 73 and formed into a sheet shape can be used. Such a 2nd absorber 71 can be arrange | positioned between the 1st absorber 40 and the surface sheet 20. FIG. The core material 72 is divided into a plurality in the vertical direction Y, and a part thereof is also divided in the horizontal direction X. Further, a part of the core material 72 is positioned so as to overlap the groove 43, and the other is positioned so as to overlap the rear absorption part 49 of the absorber 40. By providing the second absorbent body 71, it is possible to increase the amount of urine absorbed and retained in the post-absorption part 49 where urine tends to accumulate, and to further prevent urine leakage. Furthermore, urine absorbed in the first absorbent body 40 comes into contact with the skin of the wearer by using highly absorbent polymer particles that are insoluble in water and have an absorption capacity of 10 times or more of its own mass as the core material 72, It can prevent the skin from getting wet. The core material 72 is divided in the vertical direction Y and the horizontal direction X so as to be expandable when they absorb moisture. The shape, position, and the like of the core material 72 can be changed as appropriate.

The disclosure relating to the present invention described above can be summarized at least in the following matters.
This invention relates to the improvement of the following disposable absorbent article 1. The absorbent article 1 has a longitudinal direction Y and a transverse direction X, and has a skin facing surface and a non-skin facing surface opposite to the skin facing surface, front and rear regions 11 and 12 and the front and rear regions 11 and 12 connected to the longitudinal direction Y. The intermediate region 13 located between the surface sheet 20 located on the skin facing surface, the back sheet 30 located on the non-skin facing surface, and the first sheet located between the front and back sheets 20, 30. An absorbent body 40, a first groove 43 extending in the longitudinal direction Y of the first absorbent body 40, and an elastic body 60 capable of contracting in the lateral direction X are included.

This invention is characterized by the following points in the disposable absorbent article 1.
The first absorber 40 has a liquid-absorbent core material 41.
The groove 43 is formed by the substantial absence of the core material 41, extends from the intermediate region 13 to the front and rear regions 11, 12 in the longitudinal direction Y, and the first absorber 40. A pair of side wall surfaces 44 extending in the thickness direction, and a bottom surface 45 located between the side wall surfaces 44 and formed along the back sheet 30, and the longitudinal direction Y of the groove 43 On the outside, front and rear absorbing portions 48 and 49 in which the core material 41 is present in almost the entire region are formed.
The elastic body 60 is positioned in the intermediate region 13 and crosses and overlaps the groove 43, and both ends thereof are attached to the outer side in the lateral direction X of the groove 43.
The topsheet 20 is disposed along the side wall surface 44 and the bottom surface 45 in the groove 43.
When the elastic body 60 contracts, the side wall surfaces 44 of the groove 43 approach each other with a small distance.

The above invention can include at least the following embodiments.
(1) A plurality of the groove 43 are formed apart from each other in the lateral direction X.
(2) The first absorbent body 40 has a central region 46 located in the center of the lateral direction X, and a low stiffness that is located on the laterally outer side of the central region 46 and has lower rigidity than the central region 46. And both side regions 47.
(3) In the low-rigidity both-side region 47, the mass of the core material 41 of the first absorbent body 40 is smaller than that of the central region 46.
(4) The elastic body 60 is attached so as to overlap the low-rigidity both side regions 47.
(5) A pair of barrier cuff sheets 50 extending in the longitudinal direction Y and spaced apart in the lateral direction X are formed on the top sheet 20, and the barrier cuff sheets 50 are joined to the top sheet 20. A peripheral edge portion 53 and a distal edge portion 54 that can be separated from the topsheet 20 and can be expanded and contracted in the longitudinal direction Y.
(6) The first absorbent body 40 further includes a second groove 70 that extends in the lateral direction X at a position that does not overlap the first groove 43.
(7) A second absorber 71 is further disposed between the first absorber 40 and the top sheet 20.
(8) The second absorber 71 includes superabsorbent polymer particles.

  In addition to the materials described in this specification, various known materials that are normally used in this type of field are limited to the constituent members of the disposable urine pad 1 that is an example of a disposable absorbent article. Can be used. Further, in the specification of the present invention, the terms “first” and “second” are used merely to distinguish similar elements, positions, and the like.

1 Urine pad (disposable absorbent article)
DESCRIPTION OF SYMBOLS 11 Front region 12 Rear region 13 Middle region 20 Top sheet 30 Back sheet 40 1st absorber 43 1st groove | channel 44 Side wall surface 45 Bottom surface 46 Center area | region 47 Low-rigidity both-side area | region 48 Front absorption part 49 Back absorption part 60 Elasticity Body 70 Second groove 71 Second absorber

Claims (7)

It has a longitudinal direction and a lateral direction, and is located on the skin facing surface, a skin facing surface and a non-skin facing surface that is the opposite side, a front-rear region that is continuous in the longitudinal direction, and an intermediate region that is located between the front and rear regions A top sheet, a back sheet positioned on the non-skin facing surface, a first absorbent body positioned between the front and back sheets, and a first groove extending in the longitudinal direction of the first absorbent body And a disposable absorbent article comprising the elastic body contractible in the lateral direction,
The first absorbent body has a liquid-absorbent core material,
The groove is formed by the substantial absence of the core material, and extends in the longitudinal direction continuously from the intermediate region to the front-rear region and extends in the thickness direction of the first absorber. A side wall surface and a bottom surface that is located between the side wall surfaces and is formed along the back sheet, and the longitudinal direction outer side of the groove is before and after the core material is present in almost the entire region. An absorption part is formed,
The elastic body is located in the intermediate region and crosses the groove and overlaps with the elastic body, and both ends thereof are attached to the outer side of the groove extending in the lateral direction,
The top sheet is disposed along the side wall surface and the bottom surface of the groove,
When the elastic body contracts, the side wall surfaces of the groove approach each other with a small separation distance ,
The first absorbent body has a central region located at the center in the lateral direction, and low-rigid side regions located on the laterally outer side of the central region and having lower rigidity than the central region,
The low-rigidity both side regions have a smaller mass per unit area than the central region, and extend in the longitudinal direction along both side edges of the first absorbent body,
The absorbent article , wherein the elastic body extends to the outside in the lateral direction of the low-rigidity both side regions and is attached to overlap the low-rigidity both side regions .   The disposable absorbent article according to claim 1, wherein a plurality of the grooves are formed apart from each other in the lateral direction. The disposable absorbent article according to claim 1 or 2 , wherein the low-rigidity both side regions have a mass of the core material of the first absorbent body smaller than that of the central region. A pair of barrier cuff sheets extending in the longitudinal direction and spaced apart in the lateral direction are formed on the top sheet, and the barrier cuff sheet is formed from a proximal edge joined to the top sheet and the top sheet. The disposable absorbent article according to any one of claims 1 to 3 , further comprising a distal edge that is separable and expandable and contractable in the longitudinal direction. The disposable absorbent article according to any one of claims 1 to 4 , wherein the first absorbent body further includes a second groove extending in the lateral direction at a position not overlapping the first groove. The disposable absorbent article according to any one of claims 1 to 5 , wherein a second absorbent body is further disposed between the first absorbent body and the top sheet. The disposable absorbent article according to claim 6 , wherein the second absorbent body includes superabsorbent polymer particles.

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