JP6333716B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a sanitary napkin.

  In general, an absorbent article is known in which an absorber is provided between a liquid-permeable top sheet that contacts the wearer's skin and a liquid-impermeable back sheet. Among the absorbent articles, sanitary napkins, in particular, are pressed against the wearer's body by underwear and used so as to fit the wearer's body.

  However, when the sanitary napkin is used, the sanitary napkin may change into the wearer's body shape, for example, depending on the size of the underwear, the state of the elastic member of the underwear, and the posture of the wearer (for example, standing, sitting, or sleeping posture). It may not fit. For example, when the size of the underwear is too large for the wearer, a gap is left between the excretion opening and the sanitary napkin, and body fluid can easily leak, or the wearer can leak body fluid. I feel anxious about things. On the other hand, for example, when the size of the underwear is too small for the wearer, the sanitary napkin and the body are in close contact with each other, the comfortable wearing feeling is impaired, and the wearer feels uncomfortable when wearing the absorbent article. End up.

  Here, Patent Literature 1 discloses an absorbent article that disperses pressure on a wearer's body. Specifically, the absorbent article described in Patent Document 1 has a two-layer absorber core containing an absorbent polymer, and a movement auxiliary material made of beads and the like is provided between the two layers of the absorber core. It has been. When body fluid or the like is absorbed in the absorbent polymer of the absorbent article described in Patent Document 1, a polymer layer having viscosity and elasticity is formed on the surface where the two absorbent cores face each other. And by the movement assistance material which consists of a polymer layer and bead grain etc. which were formed, it becomes easy to shift | deviate between the absorber cores of two layers along the surface which each faces, and can distribute the pressure with respect to a wearer's body.

JP 2008-183159 A

  However, in the absorbent article described in Patent Document 1, the absorbent core moves only along the surface where the two-layer absorbent cores face each other. Therefore, in the absorbent article described in Patent Document 1, it is not possible to improve the fit of the absorbent article from the absorbent article to the wearer's body direction, and body fluid is generated due to a gap formed between the absorbent article and the wearer. There is a risk of leakage.

  Then, this invention is made | formed in view of the above-mentioned subject, and it aims at providing the absorbent article which prevents the leakage of a bodily fluid while improving the wearing feeling of an absorbent article.

  The absorbent article 1 in the embodiment of the present invention includes a liquid-permeable top sheet 10, a liquid-impermeable back sheet 20, and an absorbent body 30 provided between the top sheet and the back sheet. The non-skin contact surface side of the top sheet includes a granular layer 60 including a large number of granular materials, and a center WC in the width direction of the absorbent article. A central region CR that does not overlap, and a width side region WSR that is adjacent to the central region outside the central region in the width direction and overlaps the granular layer in plan view.

  According to the embodiment of the present invention, it is possible to provide an absorbent article that improves the wearing feeling of the absorbent article and prevents leakage of bodily fluids.

It is the top view seen from the skin contact surface side of the absorbent article in embodiment of this invention. It is a schematic cross section of the AA cross section shown in FIG. It is a schematic cross section of the AA cross section shown in FIG. 1 at the time of wear. It is a figure which shows typically the mode of the movement of the granular layer in planar view. It is a figure which shows typically the mode of the movement of the granular layer in sectional drawing. It is the figure which showed typically the cross section of the granular layer divided | segmented by the separation wall. It is the top view seen from the skin contact surface side of the absorptive article in the 1st modification of an embodiment of the present invention. It is the top view seen from the skin contact surface side of the absorbent article in the 2nd modification of embodiment of this invention.

(1) Whole structure of absorbent article With reference to FIGS. 1-3, the whole structure of the absorbent article 1 in this embodiment is demonstrated. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

  Drawing 1 is a top view seen from the skin contact surface side of an absorptive article. FIG. 2 is a schematic cross-sectional view of the AA cross section shown in FIG. FIG. 3 is a schematic cross-sectional view of the AA cross section shown in FIG. 1 when the absorbent article is worn. The absorbent article 1 in this embodiment is a night sanitary napkin.

  The absorbent article 1 includes a top sheet 10, a back sheet 20, an absorbent body 30 provided between the top sheet 10 and the back sheet 20, and a granular layer 60 provided on the non-skin contact surface side from the top sheet 10. And have.

  The central region CR is a region formed in the absorbent body 30 including the center WC in the width direction W of the absorbent article 1. Further, the central region CR may include a crotch region including at least a portion in contact with the wearer's excretion opening in the longitudinal direction L. In the example of FIG. 1, the outer edge of the central region CR is a compressed portion 31 that is provided in the absorber 30 and the absorber 30 is compressed in the thickness direction T. That is, the central region CR is a region that overlaps with the absorber 30 in a plan view of the absorbent article 1 and is surrounded by the pressing part 31. Here, the plan view of the absorbent article 1 is a view of the absorbent article 1 in a developed state from a position away from the thickness direction T. Further, the developed state of the absorbent article 1 is the state shown in FIG. 1, in which the absorbent article is not folded and the wing part 40 and the hip flap part 50 do not overlap the central region CR in the thickness direction T. It is. The compressed portion 31 has a length including the wing portion 40 and the hip flap portion 50 in the longitudinal direction L. Note that the outer edge of the central region CR is not limited to the compressed portion 31, and may be, for example, a boundary between a middle-high portion that is thick in the thickness direction T in the absorber 30 and a region outside the middle-high portion in plan view. Good. The boundary between the middle-high portion and the outer region of the middle-high portion is a boundary where the thickness in the thickness direction T of the absorbent body 30 changes from the outer edge 30E of the absorbent body 30 to the inner side (thickens in the thickness direction T). .

  The width side region WSR is a region adjacent to the central region CR on the outer side in the width direction of the central region CR, and is provided with a wing portion 40 and a hip flap portion 50 extending outward in the width direction W. In the example of FIG. 1, the width side region WSR is a region on the outer side in the width direction W from the pressing unit 31. That is, the width side region WSR is formed so as to straddle the outer edge 30 </ b> E of the absorbent body 30 outside the width direction W.

  The longitudinal side region LSR is a region adjacent to the central region CR outside the central region CR in the longitudinal direction. In the example of FIG. 1, the longitudinal side portion region LSR is a region outside the squeezing portion 31 in the longitudinal direction L. That is, the longitudinal side region LSR is formed so as to straddle the outer edge 30E of the absorbent body 30 outside the longitudinal direction L.

  The top sheet 10 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 10 covers at least the surface of the absorber 30. The top sheet 10 is not particularly limited as long as it is a sheet-like material having a structure that allows liquid to permeate, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, and a mesh sheet. Either natural fibers or chemical fibers can be used as the woven or non-woven material.

  The back sheet 20 is a liquid-impermeable sheet that does not transmit liquid such as body fluid. The back sheet 20 has a size that overlaps the top sheet 10 in plan view. The back sheet 20 may be a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene, a breathable resin film, a spunbond, a sheet in which a breathable resin film is bonded to a nonwoven fabric such as spunlace, or the like.

  The absorber 30 is formed of an absorbent material that can absorb body fluid. The absorbent material includes, for example, a fiber assembly made of hydrophilic fibers, pulp, SAP, tow, and the like.

  The absorbent body 30 in the present embodiment includes a fiber assembly composed of a plurality of layers of tows and SAP.

The absorbent body 30 in the present embodiment is, for example, a fiber assembly made of tow is placed on a tissue, and SAP is spread on the tissue, for example, at about 80 g / m ² , and then the fiber made of tow is placed thereon. The assembly and the superabsorbent polymer (about 80 g / m ² ) are laminated, and then the fiber assembly composed of tow and the superabsorbent polymer (about 80 g / m ² ) are laminated thereon, and then, It is formed by laminating tissue and then compressing with a press, for example, compressing for 5 seconds at a pressure of 35 kg / cm ² .

Although the basic weight of the absorber 30 in this embodiment changes with lamination | stacking numbers, a specific use, etc., it can have a basic weight etc. of about 10 to about 1000 g / m < ² >, for example.

  The wing portion 40 is configured to be foldable toward the non-skin contact surface side, and is folded back to the non-skin contact surface side of the crotch portion of the underwear when worn.

  The hip flap part 50 is located behind the longitudinal direction L of the wing part 40. The hip flap part 50 is configured to be disposed on the skin contact surface side of the underwear without being folded back to the non-skin contact surface side of the underwear when worn.

The granular layer 60 includes a large number of granular bodies and a package that wraps the granular bodies. The granular material is, for example, a hydrophobic resin foam bead such as polystyrene foam beads or polyolefin foam beads. The resin foam beads have a particle size of about 1 to 5 mmφ and a bulk density of 0.01 to 0.1 g / cm ³ . As the resin foam beads in the present embodiment, those generally used for bedding such as cushions or pillows or futons may be used. In the granular layer 60 of the present embodiment, a large number of resin foam beads are filled in a bag-like fabric constituting the package. When pressure is applied to the package, the resin foam beads move in the package according to the pressure. The movement of the granular material when pressure is applied to the granular layer 60 in the present embodiment will be described later.

  The granular layer 60 is provided so as to overlap at least a part of the width side region WSR in plan view. The granular layer 60 may be provided so as to overlap the longitudinal side region LSR in plan view. The granular layer 60 is not provided in the central region CR in plan view. That is, the granular layer 60 does not straddle the center WC in the width direction of the absorber 30 in the width direction W, but straddles the outer edge 30E of the absorber 30. Moreover, the granular layer 60 may be provided so that the outer edge 30E of an absorber may be straddled in planar view.

  The granular layer 60 may include, for example, hydrophilic fibers, pulp, fibers such as SAP, and the like, and may be configured such that the absorbent fibers and the granular material (resin foam beads) are not joined to each other. .

  2 is a cross-sectional view of the absorbent article 1 based on the AA cross section of FIG. As shown in FIG. 2, in the absorbent article 1 of the present embodiment, the granular layer 60 is provided between the absorber 30 and the back sheet 20 in the thickness direction T. In addition, the granular layer 60 should just be provided in the non-skin contact surface side from the surface sheet 10, for example, the granular layer 60 is the non-skin contact surface side of the back sheet 20 between the surface sheet 10 and the absorber 30. May be provided.

  The granular layer 60 may be composed of a plurality of granular sections 61 in plan view as shown in FIG. 2 and FIG.

  3 is a cross-sectional view based on the AA cross section of FIG. 1 in a state where the absorbent article 1 is worn by a wearer (hereinafter referred to as a worn state). In the wearing state shown in FIG. 3, the absorbent article 1 is sandwiched between the wearer's legs and pushed up to the skin contact surface side by the underwear S positioned on the non-skin contact surface side of the back sheet 20. As shown in FIG. 3, in a wearing state, according to the pressure with respect to a granular layer, a granular body moves freely within the granular layer 60 (granular division 61), and the shape of the absorbent article 1 is changed.

(2) Function of Granular Layer FIG. 4 is a diagram schematically showing the movement of the granular material in the granular layer 60 in plan view. FIG. 4A shows a state in which no pressure is applied to the granular layer 60. FIG. 4B shows a state where the pressure F <b> 1 in the thickness direction T is applied to the granular layer 60. As shown in FIG. 4B, the granular material moves from the high pressure portion where the pressure F1 is applied to the other low pressure portion.

  FIG. 5 is a diagram schematically showing the movement of the granular material in the granular layer 60 in a cross-sectional view parallel to the thickness direction T. FIG. 5A shows a state before the pressure F1 in the thickness direction T and the pressure F2 in the width direction W are applied to the absorbent article 1 (a state where no pressure is applied). FIG. 5B shows a state where the pressure F1 in the thickness direction T and the pressure F2 in the width direction W are applied to the absorbent article 1. FIG. 5 shows a change in pressure applied to the absorbent article 1 in the crotch region. As shown in FIG. 5B, the pressure F <b> 1 is applied to the granular layer 60 through the top sheet 10 and the absorber 30. The pressure F2 is, for example, a pressure when the absorbent article 1 is sandwiched between legs when worn. When the granular layer 60 receives the pressure F1 in the thickness direction T and the pressure F2 in the width direction W of the absorbent article, the granular material moves in the granular layer 60 from a higher pressure to a lower pressure. The granular material moved to a lower pressure pushes up the absorbent body 30 that overlaps in the plan view in the thickness direction T. In this way, the granular layer 60 moves in the granular layer 60 (packaging body) according to the pressure on the granular layer 60 and follows the shape of the wearer's body, so The shape of the absorber 30 and the topsheet 10 arranged on the contact surface side can be changed. Therefore, when the absorbent article 1 is worn, an uneven shape corresponding to the pressure applied to the absorbent article 1 is formed on the absorbent body 30 (surface sheet 10), and the absorbent article 1 follows the shape of the wearer's body. Change.

  In addition, the pressure with respect to the absorbent article 1 in a wearing state is applied not only in the thickness direction T but also in the width direction W and the longitudinal direction L. Similarly to the case where the pressure in the thickness direction T is applied, even when the pressure in the width direction W and the longitudinal direction L is applied, the granular material in the granular layer 60 moves from the high pressure portion to the low pressure portion.

(3) Configuration of Granular Layer FIG. 6 is a schematic cross-sectional view for explaining the configuration of the granular layer 60. As shown in FIG. 6, the granular layer 60 is provided with a plurality of granular sections 61, and the granular sections 61 are separated by a separation wall 62. The separation wall 62 is a partition that divides the granular layer 60 into a plurality of granular sections 61. In addition, the separation wall 62 may be formed by joining one package body linearly as shown in FIG. 6, or as a planar shape in which both are in contact by joining a plurality of separate package bodies. It may be formed.

(4) Absorbent article in the first modified example As shown in FIG. 7, the absorbent body 30 included in the absorbent article 1 in the first modified example of the present embodiment has a plurality of slits 32 along the width direction W. Is formed. The slit 32 may be formed in the longitudinal direction L, or may be formed by combining the slits 32 in the width direction W and the longitudinal direction L. In addition, about the structure similar to embodiment mentioned above among the codes | symbols of the absorbent article 1 in FIG. 7, description is abbreviate | omitted using a same code | symbol. According to the absorbent article 1 in the first modification, the shape of the absorbent article 1 can be made to follow the shape of the wearer's body, so that the wearing feeling of the absorbent article 1 can be improved and the leakage of body fluid can be prevented.

(5) Absorbent article in the second modified example As shown in FIG. 8, the absorbent article 1 in the second modified example of the present embodiment stands in the thickness direction T and extends in the longitudinal direction L. It has a leak-proof wall 71 having uprightness. The leak-proof wall 71 is constituted by a side seat 70 including the wing part 40 and the hip flap part 50. The leak-proof wall 71 is located on the outer side in the width direction W with respect to the contracted portion 72 formed of an elastic member that can be expanded and contracted along the longitudinal direction L, and serves as a starting point for the leak-proof wall 71 to rise. It has the fixed end 73 and the free end 74 which is located inside the width direction W from the fixed end 73, includes a part of the contraction part 72, and is not fixed to other members. The contraction part 72 is configured by an elastic member disposed on the side seat 70. A portion constituting the fixed end 73 in the side sheet 70 is fixed to the top sheet 10 by an adhesive, heat fusion, or the like. The granular layer 60 in the second modification example is configured to overlap the fixed end 73 in a plan view and extend outward in the width direction W from a region overlapping the fixed end 73. In addition, about the structure similar to embodiment mentioned above among the codes | symbols of the absorbent article 1 in FIG. 8, description is abbreviate | omitted using a same code | symbol. According to the absorbent article 1 in the second modification, it is possible to improve the feeling of wearing the absorbent article 1 and to prevent body fluid from leaking. Further, the shape of the absorbent body 30 changes along the shape of the wearer's body outside the width direction W of the fixed end 73 of the leak-proof wall 71, and the effect of preventing side leakage of body fluid by the leak-proof wall 71 is achieved. Can be increased.

(6) Action / Effect The absorbent article 1 in the present embodiment has a width side region WSR that is adjacent to the outside in the width direction W of the central region CR and overlaps the granular layer 60 in plan view. Therefore, in the portion overlapping the granular layer 60 in plan view in the width side region WSR, a large number of granular bodies included in the granular layer 60 move in accordance with a change in pressure on the absorbent article 1 and follow the shape of the body. The shape of the absorbent article 1 is changed. Specifically, for example, when the absorbent article 1 is sandwiched between the legs of the wearer when worn, pressure is applied from the outside in the width direction W to the inside in the width direction W in the crotch region of the absorbent article 1. Moreover, the pressure from a wearer's inseam is also applied to the absorbent article 1. Therefore, force is applied to the granular layer 60 disposed in the width side region WSR of the absorbent article 1, and the pressure of a part of the granular layer 60 disposed in the width side region WSR is increased. In the granular layer 60, the granular material of the granular layer 60 that overlaps the high pressure portion moves toward the low pressure portion. As a result, the part (absorber 30 and top sheet 10) on the skin contact surface side of the granular layer 60 is pushed up in the thickness direction by the moved granular body. Thereby, the shape of the absorbent article 1 changes so that the shape of a wearer's body may be followed.

  Moreover, in the part corresponding to a wearer's buttocks among the granular layer 60 arrange | positioned at the width | variety side area | region WSR of the absorbent article 1, the pressure from a buttocks is applied. In accordance with the change in pressure, the granular material of the granular layer 60 that overlaps the high pressure portion in the granular layer 60 moves toward the low pressure portion. Thereby, the site | part (absorber 30 and the surface sheet 10) of the skin contact surface side from the granular layer 60 is pushed up by the thickness direction by the moved granular body. Thereby, the shape of the absorbent article 1 changes so that the shape of a wearer's body may be followed.

  On the other hand, the central region CR of the absorbent article 1 is configured not to overlap the granular layer 60 in plan view. Further, the central region CR is disposed including the center WC in the width direction of the absorbent article 1. The center WC in the width direction of the absorbent article 1 is an area that comes into contact with the wearer's excretion opening. When the central region CR is too close to the wearer, the wearing feeling may be deteriorated due to steaming or body fluid adhesion. However, since the central region CR is not pushed up by the granular layer 60, it is possible to suppress deterioration of the wearing feeling due to the central region CR being too close to the body.

  As described above, in the portion overlapping the granular layer 60 in the width side region WSR in a plan view, the fitting property of the absorbent article 1 is improved as compared with the central region CR where the granular layer 60 is not provided, and the absorbent article. No gap is created between 1 and the wearer's body. Therefore, the width side region WSR can be brought into close contact with the wearer while suppressing the central region CR from being too close to the wearer. Thereby, the wearing feeling of the absorbent article 1 can be improved, and leakage of body fluid flowing toward the outside in the width direction of the central region CR can be prevented.

  The granular layer 60 is provided in a region outside the longitudinal direction L of the central region CR (longitudinal region LSR) and a region outside the central region CR in the width direction W (width side region WSR). Thereby, the leak of the bodily fluid which flows toward the outer side of center area | region CR from the center area | region CR including the area | region which contact | abuts the center WC of the width direction W of the absorbent article 1, ie, a wearer's excretion opening | mouth is more effectively suppressed. it can.

  More specifically, in the configuration in which the granular layer 60 is disposed outside the central region CR in the width direction W and the granular layer 60 is not disposed outside the central region CR in the longitudinal direction L, the central region CR The discharged body fluid may flow to the outside in the longitudinal direction L, and there is a risk that a front leak or a rear leak may occur. However, by disposing the granular layer 60 on the outer side in the width direction W of the central region CR and on the outer side in the longitudinal direction L of the central region CR, not only side leakage but also front leakage and rear leakage can be effectively suppressed.

  The granular layer 60 is disposed on the non-skin contact surface side of the absorbent body 30 and is provided so as to straddle the outer edge 30E of the absorbent body 30 in a plan view. The region where the absorber 30 is disposed can be made to follow the shape of the wearer's body. Body fluid can be absorbed by the absorbent body 30 arranged following the body, and side leakage of body fluid can be effectively prevented. Furthermore, since the granular layer 60 extends from the region overlapping the absorber 30 to the outer side in the width direction W, the region located outside the absorber 30 can also follow the shape of the wearer's body. Moreover, it can suppress that a bodily fluid leaks outside the absorber 30. FIG.

  The granular layer 60 overlaps with the fixed end 73 extending in the longitudinal direction L that is one end in the width direction W of the leak-proof wall 71 in a plan view, and is provided outside the width direction W of the fixed end 73. Outside the fixed end 73 in the width direction W, the low pressure portion of the absorber 30 is pushed up in the thickness direction T by the moved granular material. Thereby, the shape of the absorbent article 1 changes along the shape of the wearer's body on the outer side in the width direction W of the fixed end 73 of the leak-proof wall 71, and side leakage of body fluid by the leak-proof wall 71 is prevented. The effect can be further enhanced. In addition, when the granular layer 60 and the fixed end 73 are separated from each other in plan view, the fixed end 73 and the body of the leak-proof wall 71 are separated from each other, and it is difficult to obtain a side leakage prevention effect by the leak-proof wall 71. Sometimes. However, since the fixed end 73 of the leak-proof wall 71 overlaps the granular layer 60 in a plan view, the fixed end 73 of the leak-proof wall 71 can be arranged following the body by the granular layer 60, and side leakage prevention by the leak-proof wall 71 It becomes easy to obtain an effect.

  By forming slits in the absorbent body 30 in addition to the granular layer 60 included in the absorbent article 1, it is easier to follow the shape of the body, and the wearing feeling of the absorbent article 1 can be improved. Specifically, it is easy to bend (deform) the absorbent article 1 in a direction orthogonal to the slit 32. As a result, the shape of the absorbent article 1 can easily follow the body of the wearer, and the wearing feeling of the absorbent article 1 is improved.

  By providing the granular layer 60 between the absorber 30 and the back sheet 20, the absorber 30 is interposed via the top sheet 10 as compared to the case where the granular layer 60 is provided between the top sheet and the absorber 30. Since the body fluid is absorbed, the absorbent capacity of the absorbent article 1 is not reduced.

  The granular layer 60 is composed of a plurality of granular sections 61 divided by separation walls 62 in plan view. For example, when the granular layer 60 is not divided into the separation walls 62, the granular material is biased in a certain direction, and depending on the part of the absorbent article 1, there are few granular materials that move according to changes in pressure when worn. Cases may occur. Like the absorbent article 1 of the present invention, the granular layer 60 is divided by the separation wall 62 to reduce the deviation of the granular material contained in the granular layer 60 in a certain direction, and the magnitude of the change in pressure during wearing is reduced. An appropriate amount of granules can be arranged according to different parts. That is, by arranging the granular section 61 over the entire absorbent article 1 (wide range), the shape of the absorbent article 1 is changed according to the change in pressure in the entire absorbent article 1 (wide range). It can be made to follow the shape of the body.

  The absorber 30 includes a fiber assembly made of tow. By using a fiber assembly made of tows that are more bulky for the absorbent body 30, the body at the time of wearing and the absorbent article 1 can easily come into contact with each other, and the wearing feeling can be improved.

  Since the granular material contained in the granular layer 60 is a resin foam bead particle having a high fluidity, the granular layer 60 (packaging body) can easily move, and the shape of the absorbent article 1 can easily follow the shape of the body. Can be transformed.

  The granular layer 60 includes fibers having water absorption, and is configured so that the absorbent fibers and the granular material included in the granular layer 60 are not joined to each other. Thereby, also in the granular layer 60, a bodily fluid can be absorbed and the absorption capacity of the absorbent article 1 can be improved.

(7) Other Embodiments The absorbent article of the present embodiment is a sanitary napkin for night use, but may be any absorbent article that is used by being pressed against the body with underwear. As another embodiment, It may be a sanitary napkin for daytime, a panty liner, or a urine absorbing pad. Further, the sanitary napkin may not include a hip flap.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

DESCRIPTION OF SYMBOLS 1 Absorbent article 10 Top sheet 20 Back sheet 30 Absorber 30E Absorber outer edge 31 Squeeze part 32 Slit 40 Wing part 50 Hip flap part 60 Granular layer 61 Granular section 62 Separation wall 70 Side sheet 71 Leak prevention wall 72 Contraction part 73 Fixed end 74 Free end L Longitudinal direction W Width direction WC Width direction center T Thickness direction CR Central region LSR Long side region WSR Width side region

Claims (11)

An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet,
A granular layer that is arranged on the non-skin contact surface side from the surface sheet and includes a large number of granular materials,
A central region that includes the center of the absorbent article in the width direction and does not overlap the granular layer in plan view;
An absorbent article having a width side region adjacent to the central region on the outer side in the width direction of the central region and overlapping the granular layer in plan view.   2. The absorbent article according to claim 1, further comprising a longitudinal side region that is adjacent to the central region on the outer side in the longitudinal direction of the central region and overlaps the granular layer in a plan view.   The absorbent article according to claim 1, wherein the granular layer is disposed on the non-skin contact surface side with respect to the absorbent body and straddles the outer edge of the absorbent body in a plan view. A standing leakproof wall having a shrinkable portion that can be expanded and contracted along the longitudinal direction, and a fixed end that is positioned on the outer side in the width direction than the shrinkable portion and that serves as a starting point of the leakproof wall. ,
The absorbent article according to any one of claims 1 to 3, wherein the granular layer overlaps the fixed end in a plan view and extends outward in a width direction from a region overlapping the fixed end.   The absorptive article according to any one of claims 1 to 4 in which a plurality of slits are formed in said absorber.   The absorptive article according to any one of claims 1 to 5 in which said granular layer is provided between said absorber and said back sheet.   The said granular layer is an absorptive article as described in any one of Claims 1 thru | or 6 comprised from the some granular division divided | segmented by the separation wall in planar view.   The absorbent article according to any one of claims 1 to 7, wherein the absorbent body includes a fiber assembly made of tow.   The absorptive article according to any one of claims 1 to 8 in which said granular object is a resin foam bead grain. The granular layer includes fibers having water absorption,
The absorptive article according to any one of claims 1 to 9 in which said fiber and said granular object are not joined mutually. An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber provided between the top sheet and the back sheet,
A granular layer that is arranged on the non-skin contact surface side from the surface sheet and includes a large number of granular materials,
A central region that includes the center of the absorbent article in the width direction and does not overlap the granular layer in plan view;
A width side region adjacent to the central region on the outside in the width direction of the central region and overlapping the granular layer in plan view,
The top sheet located on the skin contact surface side of the granular layer so that the granular body moves and follows the shape of the body of the wearer according to the pressure on the granular layer, An absorptive article which changes the shape of a back sheet or the above-mentioned absorber.

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