JP5592185B2 - Absorbent articles - Google Patents

Description

  The present invention relates to absorbent articles such as urine pads (including incontinence pads), disposable diapers, and sanitary napkins.

  Conventionally, in order to improve the diffusibility of urine etc. in an absorbent article, an absorbent article provided with a foamed polymer is known. For example, Patent Document 1 discloses an absorbent article having a top sheet, a back sheet, and an absorbent core provided therebetween, and a foamed polymer provided between the top sheet and the absorbent core. Yes. Further, Patent Document 2 includes a top sheet, a back sheet, and an absorbent laminate provided therebetween, and the absorbent laminate is disposed under a storage layer having an opening and the opening of the storage layer. And an absorbent article having a liquid handling layer comprising a foamed polymer.

JP 2005-152250 A Japanese Patent Laid-Open No. 2-60645

  However, in the absorbent article disclosed in Patent Document 1, the foamed polymer is merely disposed on the upper surface of the absorbent core, and when the absorbent article is pressed by the weight of the wearer, There is a risk that the diffusibility of urine, etc. will be reduced. The absorbent article disclosed in Patent Document 2 has a liquid handling layer made of a foamed polymer disposed below the opening of the storage layer, so that urine or the like contained in the liquid handling layer may not easily move to the storage layer. There is.

  This invention is made | formed in view of the said situation, The objective is to provide the absorbent article which is easy to absorb urine etc. rapidly while being excellent in the diffusibility to surface directions, such as urine.

  The absorbent article of the present invention that has solved the above-mentioned problems has a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent laminate provided therebetween; The laminate has a front-rear direction and a width direction, and has an upper absorbent layer and a lower absorbent layer from the top sheet side; the upper absorbent layer is a center including a polymer elastic body having voids therein Having a region and a peripheral region adjacent to some or all of the outer edge of the central region and containing pulp fibers; the lower absorbent layer is characterized by having an absorbent material.

  The absorbent article of the present invention includes a polymer elastic body having voids in the central region of the upper absorbent layer of the absorbent laminate, so that urine and the like are easily diffused in the plane direction in the central region. Urine or the like diffused in the region is quickly absorbed by the adjacent surrounding region. In addition, the central region is protected by the adjacent surrounding region, and even if stress is applied from the outside, the void in the polymer elastic body is retained, and diffusibility of urine etc. is easily secured, for example, absorbability Even in the state where the wearer of the article is seated, the diffusibility of urine and the like in the central region is good. Furthermore, since the lower absorption layer is provided below the upper absorption layer, urine or the like diffused in the central region is also absorbed by the lower absorption layer. Therefore, in the absorbent article of the present invention, urine excreted from the wearer is quickly absorbed, and side leakage such as urine is easily prevented.

  The surrounding area is preferably adjacent to the entire outer edge of the central area. If the central region and the peripheral region are formed in this manner, urine or the like diffused in the central region is reliably absorbed in the peripheral region, and side leakage of urine or the like is easily prevented.

  The central region is preferably formed in a shape that is long in the front-rear direction of the absorbent laminate. Absorbent articles and absorbent laminates generally have a shape that is long in the front-rear direction. If the central region is formed in this way, urine and the like are easily diffused in the front-rear direction, and urine and the like are efficiently absorbed upward. Become absorbed into the layer.

  The central region is preferably formed with a wide front end. If the central region is formed in this way, it becomes easier to receive a larger amount of urine or the like excreted from the wearer at the wide front end of the central region. Therefore, urine or the like stored in the central region is easily absorbed by the surrounding region after diffusing in the central region.

  The central region preferably has a branched rear end. If the central region is formed in this way, urine or the like is likely to diffuse in multiple directions at the branched portion at the rear end of the central region, and urine or the like is less likely to accumulate at the rear end of the central region. Accordingly, the back end of the urine or the like does not easily return to the top sheet at the rear end of the central region, and the wearing feeling of the absorbent article is improved, and the urine or the like quickly moves to the surrounding region at the rear end of the central region. Easily absorbed.

  The polymer elastic body having voids therein is preferably arranged so as to penetrate the central region of the upper absorbent layer and face the top sheet and the lower absorbent layer. If the absorbent laminate is configured in this way, urine etc. that has passed through the top sheet can be easily accommodated in the polymer elastic body in the central region, and urine etc. diffuses in the plane direction with the polymer elastic body. It becomes easy to do.

  The lower absorbent layer preferably has a water absorbent resin between the nonwoven fabric sheets and does not have pulp fibers. In this case, in the lower absorbent layer, the absorption rate of urine and the like can be lowered compared to the surrounding region having pulp fibers, and urine and the like are easily diffused in the plane direction in the central region.

  The lower absorbent layer has a water-absorbing resin-existing region in which a water-absorbing resin is arranged between the nonwoven fabric sheets, and a water-absorbing resin non-existing region adjacent to the water-absorbing resin existing region. It is preferable that the nonwoven fabric sheets are joined in the region. If the lower absorbent layer is formed in this way, urine and the like are easily diffused in the sealing portion where the nonwoven fabric sheets are joined together. Accordingly, the absorption capacity of the lower absorption layer is easily utilized throughout.

  It is preferable that the water-absorbing resin non-existing region is arranged so as to extend in the front-rear direction of the absorbent laminate and to cut through the central region. If the water-absorbing resin absence region is formed in this way, even if the water-absorbing resin arranged in the water-absorbing resin presence region absorbs water and swells, the water-absorbing resin absence region that cuts through the central region, Urine or the like that has passed through the central region is likely to diffuse in the front-rear direction. Also, in the central region of the upper absorbent layer, the polymer elastic body disposed in the central region is hard to be pressed in a portion overlapping with the water-absorbing resin non-existing region, and diffusibility of urine and the like in the front-rear direction is ensured. It becomes easy.

  The lower absorbent layer has a water absorbent resin between the nonwoven fabric sheets and does not have pulp fibers, and is preferably provided on both sides of the central region. Even when the lower absorbent layer is arranged in this way, as described above, the water absorbent resin-free region extends in the front-rear direction of the absorbent laminate, and is arranged so as to cut through the central region. The same effect as the case can be obtained.

  A rising flap extending in the front-rear direction of the absorbent laminate is joined to the top sheet at the joint, and the joint has an inner end with respect to the width direction located more outward in the width direction than the central region. preferable. If the rising flap is provided in this way, the joint portion of the rising flap does not overlap with the central region of the upper absorbent body. Therefore, the urine etc. excreted from the wearer are accommodated in the central region without being blocked by the joint portion of the rising flap. As a result, urine and the like are easily diffused in the upper absorption layer, and urine and the like are easily absorbed.

  In the absorbent article of the present invention, diffusion of urine and the like is promoted by the central region of the upper absorbent layer, and urine diffused in the central region is quickly absorbed by the surrounding region and the lower absorbent layer. Therefore, in the absorbent article of the present invention, urine excreted from the wearer is quickly absorbed, and side leakage such as urine is easily prevented.

The formation example of the center area | region and surrounding area | region formed in an upper side absorption layer is represented. The formation example of the center area | region and surrounding area | region formed in an upper side absorption layer is represented. The structural example of the center area | region formed in an upper side absorption layer is represented. FIG. 4 is a cross-sectional view taken along the line AA of the upper absorption layer illustrated in FIG. 3. The top view which looked at the absorbent article (urine pad) from the top sheet side as one embodiment of the absorbent article of this invention is represented. The top view which looked at the absorptive layered product of the absorptive article shown in Drawing 5 from the top sheet side is expressed. The BB sectional view of the absorptive article shown in Drawing 5 is expressed.

  The absorbent article of the present invention includes a top sheet, a back sheet, and an absorbent laminate provided therebetween. Examples of the absorbent article of the present invention include urine pads (including incontinence pads), disposable diapers, sanitary napkins and the like.

  The shape of the absorbent article is not particularly limited. When the absorbent article is, for example, a urine pad or a sanitary napkin, the shape of the absorbent article includes a substantially rectangular shape, an hourglass shape, a gourd shape, a battledore shape, and the like.

  When the absorbent article is a disposable diaper, the disposable diaper may be an open-type disposable diaper that is provided with a pair of fastening members on the left and right sides and formed into a pants shape when worn by the fastening member, and a waist opening And a pair of legged disposable diapers in which a pair of leg openings are formed.

  A top sheet is a sheet | seat located in the wearer side in the case of wear of an absorbent article, and the material will not be specifically limited if it is liquid-permeable. The back sheet is a sheet located on the side opposite to the wearer when the absorbent article is worn, that is, the outside, and the material is not particularly limited as long as it is liquid-impermeable. In the present invention, liquid impermeability includes the meaning of water repellency.

  Examples of the top sheet include a nonwoven fabric formed from hydrophilic fibers such as cellulose, rayon, and cotton; and a nonwoven fabric formed from hydrophobic fibers such as polypropylene, polyethylene, polyester, polyamide, and nylon. The surface of which is hydrophilized with a surfactant can be used. As the top sheet, a woven fabric, a knitted fabric, or a plastic film in which holes are formed may be used.

  As the back sheet, a nonwoven fabric formed from hydrophobic fibers such as polypropylene, polyethylene, polyester, polyamide, nylon, a plastic film, or the like can be used. Moreover, you may use the laminated body of a nonwoven fabric and a plastic film.

  When a nonwoven fabric is used as the top sheet or the back sheet, the nonwoven fabric is preferably manufactured by a spunbond method, an air-through method, a point bond method, a melt blow method, an airlaid method, or a combination of these production methods. Moreover, you may use the nonwoven fabric manufactured by SMS method which combined the spun bond method and the melt blow method.

  The absorbent laminate is provided between the top sheet and the back sheet and absorbs excrement such as urine. The absorbent laminate has an upper absorbent layer and a lower absorbent layer from the topsheet side. Preferably, the upper absorbent layer is provided adjacent to the lower absorbent layer. The upper absorbent layer is a layer disposed closer to the top sheet than the lower absorbent layer. Therefore, the upper absorbent layer basically receives body fluid such as urine that has passed through the top sheet and transferred to the absorbent laminate first before the lower absorbent layer. The lower absorption layer basically receives urine or the like that has passed through the upper absorption layer.

  The absorbent laminate has a front-rear direction and a width direction. The front-rear direction means a direction extending in the front-rear direction of the wearer's crotch when the wearer wears the absorbent article. In the front-rear direction, the position on the wearer's abdomen side is referred to as the front side, and the position on the buttocks side of the wearer is referred to as the rear side. The width direction means a direction that is on the same plane as the absorbent laminate and is orthogonal to the front-rear direction. A direction on the surface formed from the front-rear direction and the width direction is referred to as a surface direction. Moreover, in this invention, the upper side means the wearer side at the time of wearing an absorbent article, and a lower side means the opposite side, ie, an outer side, from the wearer at the time of wearing an absorbent article. A direction extending from the upper side to the lower side is referred to as a vertical direction.

  The shape (planar shape) of the absorbent laminate is not particularly limited. The shape (planar shape) of the upper absorbent layer and the lower absorbent layer is not particularly limited. The shapes of the upper absorbent layer and the lower absorbent layer may be the same or different from each other. The shape of the absorbent laminate, the upper absorbent layer, and the lower absorbent layer may be appropriately determined depending on the application, and examples thereof include a rectangular shape, an hourglass shape, a gourd shape, and a battledore shape.

  The lower absorbent layer has an absorbent material. Examples of the absorbent material include hydrophilic fibers such as pulp fibers and cellulose fibers, and water-absorbing resins such as polyacrylic acid, polyaspartic acid, cellulose, and starch / acrylonitrile. These absorptive materials may use only 1 type and may use 2 or more types.

  As the lower absorbent layer, for example, a molded body in which an absorbent material is molded into a predetermined shape is used, or the molded body is a sheet member such as a paper sheet (for example, tissue paper or thin paper) or a liquid-permeable nonwoven sheet. Covered ones can be used. Moreover, you may use what has a water absorbing resin between nonwoven fabric sheets, and does not have a pulp fiber (henceforth a "sheet-like absorption layer").

  When the lower absorbent layer has a water-absorbing resin, it is preferable to use a polyacrylic acid-based water-absorbing resin such as sodium polyacrylate as the water-absorbing resin because it has a high absorption capacity.

  When the lower absorbent layer has pulp fibers, defibrated pulp fibers are preferably used as the pulp fibers. The defibrated pulp fiber is preferably used as a fiber mass. If pulp fiber is used as the absorbent material, urine and the like are easily absorbed.

  The upper absorbent layer has a central region including a polymer elastic body having voids therein and a peripheral region including pulp fibers adjacent to a part or all of the outer edge of the central region. In the upper absorbent layer, the central region is provided to increase the diffusibility of urine and the like, and the surrounding region is provided to absorb urine and the like diffused in the central region. In other words, the central region has a polymer elastic body having voids therein, so that diffusibility of urine and the like is enhanced through the voids. The surrounding area has excellent absorption of urine and the like by having pulp fibers.

  The upper absorbent layer has a central region and a peripheral region in a state where the absorbent article is viewed in plane, that is, on a surface formed from the front-rear direction and the width direction. The central region may be formed so that part or all of the outer edge thereof is adjacent to the surrounding region. In addition, when a part of outer edge of a center area | region adjoins a surrounding area, the remainder of the outer edge of a center area | region becomes an outer edge of an upper side absorption layer. When the entire outer edge of the central region is adjacent to the surrounding region, the outer edge of the surrounding region coincides with the outer edge of the upper absorbent layer.

  In the central region, the upper absorption layer is formed so that the side surface faces the side surface of the surrounding region at the outer edge. Therefore, urine or the like diffused in the central region passes through the side surface of the outer edge of the central region and moves to the peripheral region, and urine or the like is quickly absorbed by the peripheral region.

  As the polymer elastic body having voids inside, it is preferable to use a polymer that can be elastically deformed under the general handling conditions of absorbent articles. Moreover, it is preferable that the polymer elastic body can follow the twisting and bending of the absorbent article when it is provided in the absorbent article.

  Examples of the polymer elastic body having voids therein include foamed polymers. The foamed polymer is not particularly limited as long as the polymer is foam-molded. For example, foamed urethane, foamed rubber, foamed polyester, or the like can be used. The foamed polymer has a large number of voids inside, and urine or the like can diffuse well through these voids. In addition, the foamed polymer can be elastically deformed under the handling conditions of general absorbent articles and has a higher elastic modulus than fiber masses such as pulp fibers. The diffusivity of urine or the like is easily maintained. Therefore, if the foamed polymer is provided in the central region of the upper absorbent layer, the diffusibility of urine or the like in the central region is good even when the wearer of the absorbent article is seated, for example.

  As the polymer elastic body having voids inside, a polymer structure having a lattice structure inside may also be used. As such a polymer structure, “Fusion” (registered trademark) sold by Asahi Kasei Fibers Corporation can be used. Such a polymer structure allows urine and the like to diffuse well through voids in the lattice structure. Even when a polymer structure having a lattice structure is used, the same effect as that obtained when a foamed polymer is used can be obtained.

  The polymer elastic body having voids inside is not limited to the above exemplified foamed polymer or polymer structure having a lattice structure inside. Any polymer material having voids inside and capable of elastic deformation can be used without particular limitation.

  The central region only needs to include at least a polymer elastic body having voids therein, and may further include other materials. However, it is preferable that the polymer elastic body having voids therein is not used by mixing with other materials in order to enhance the diffusibility of urine and the like.

  When the central region further includes another material, the other material is preferably used by being laminated on a polymer elastic body having a void inside. In this case, the polymer elastic body having voids therein is preferably provided so as to be exposed on the top sheet side surface of the upper absorbent layer in the central region in order to realize rapid reception and diffusion of urine and the like. If the central region is configured in this way, the side surface of the polymer elastic body having voids inside faces the peripheral region at the outer edge of the central region. When the central region further includes another material, an absorbent material that can be used for the lower absorbent layer and the surrounding region can be used as the other material.

  The polymer elastic body having voids therein is preferably included only in the central region and not included in the surrounding region or the lower absorption layer. A polymer elastic body having voids inside is effective in enhancing the diffusibility of urine, etc., but in terms of absorbing urine and holding it irreversibly, compared to general pulp fiber and water absorbent resin The performance is inferior. Therefore, the polymer elastic body having voids inside is preferably included only in the central region from the viewpoint of sufficiently securing the absorption capacity of the absorbent laminate and stably fixing the absorbed urine and the like.

  The surrounding area should just contain the pulp fiber at least. Pulp fibers can quickly absorb urine and the like, and can retain body fluids more irreversibly than a polymer elastic body having voids inside. Therefore, if the surrounding region contains pulp fibers, urine or the like diffused in the central region can be quickly transferred to the surrounding region, and urine or the like can be absorbed and fixed in the surrounding region.

  For example, when the peripheral region is not provided in the upper absorbent layer, a large amount of urine or the like tends to remain in the central region, and urine or the like easily returns to the top sheet. In this case, the wearing feeling of the absorbent article may be deteriorated. However, if a peripheral region having pulp fibers is provided adjacent to the central region, urine or the like in the central region is quickly absorbed by the pulp fibers in the peripheral region, and a large amount of urine or the like hardly remains in the central region. Therefore, the absorbent article has an excellent wearing feeling.

  Moreover, when a surrounding area | region is not provided in an upper side absorption layer, for example in the state in which the wearer of the absorbent article sat down, a center area | region is pressurized with a wearer's weight and it becomes easy to reverse | return urine etc. However, if a peripheral region is provided adjacent to the central region, the central region is protected by the peripheral region, and the central region is not strongly pressurized, and reversal of urine or the like hardly occurs. Such an effect is particularly easy to obtain when the central region is provided near the center in the width direction of the absorbent laminate (on the center line in the width direction). If the central region is formed in this way, the central region is less likely to be located near the top of the wearer's buttocks, and the central region is less likely to be pressurized by the wearer's weight while the wearer is seated.

  As the pulp fibers contained in the surrounding region, defibrated pulp fibers are preferably used. The defibrated pulp fiber is preferably used as a fiber mass.

  The surrounding region preferably contains a water-absorbing resin in addition to the pulp fiber. As the water absorbent resin used in the surrounding region, a water absorbent resin usable for the lower absorbent layer may be used. If the surrounding area contains a water-absorbing resin, the absorption capacity of urine or the like in the surrounding area can be increased. For the surrounding region, it is preferable to use, for example, a pulp fiber mixed or dispersed with a water absorbent resin.

  The upper absorbent layer is preferably formed with a central region and a peripheral region as follows. That is, the surrounding area is formed so as to surround the entire outer edge of the central area, and the entire outer edge of the upper absorbent layer is occupied by the surrounding area. Alternatively, the central region is formed by being sandwiched between the peripheral regions, and a part of the outer edge of the upper absorbent layer is occupied by the central region, and the remaining portion is occupied by the peripheral region.

  An example of forming the central region and the surrounding region will be described with reference to FIG. In FIG. 1, the example of formation of the center area | region C and the surrounding area | region S which are formed in the upper side absorption layer 5 was shown. In FIG. 1, the center area C is displayed with hatching. In the drawings of the present application, the arrow x represents the width direction, the arrow y represents the front-rear direction, and the direction perpendicular to the plane formed by the arrows x, y represents the up-down direction z. Moreover, in FIG. 1, the upper side of the figure corresponds to the wearer's front side (abdominal side), and the lower side of the figure corresponds to the wearer's rear side (back side).

  In FIG. 1A, the central region C is formed in a rounded rectangular shape with long corners in the front-rear direction y, and the entire outer edge of the central region C is adjacent to the surrounding region S. If the central region C and the surrounding region S are formed as shown in FIG. 1A, urine or the like easily diffuses in the front-rear direction y in the central region C. It is surely absorbed by the surrounding area S arranged around the entire circumference of C.

  In FIG. 1B, the central region C is formed in a rectangular shape that is long in the front-rear direction y, a part of the outer edge of the central region C is adjacent to the surrounding region S, and both ends of the central region C in the front-rear direction y are absorbed upward. A part of the outer edge of the layer 5 is formed. In FIG. 1B, the central region C is formed between the surrounding regions S in the width direction x. If the central region C and the surrounding region S are formed as shown in FIG. 1B, diffusion of urine or the like in the front-rear direction y is promoted in the central region C.

  In FIG. 1C, the central region C is formed in a substantially circular shape, and the entire outer edge of the central region C is adjacent to the surrounding region S. In FIG.1 (c), the substantially circular center area | region C is formed so that a wearer's urination part vicinity may be faced. If the central region C and the surrounding region S are formed as shown in FIG. 1C, the urine etc. excreted from the wearer diffuses quickly in the central region C, and then the urine etc. It is reliably absorbed by the surrounding area S arranged around. In FIG. 1C, the central region C is formed in a relatively wide range both in the width direction x and in the front-rear direction y.

  In FIG. 1D, the central region C is formed in a rectangular shape that is long in the width direction x, a part of the outer edge of the central region C is adjacent to the surrounding region S, and both ends of the central region C in the width direction x are absorbed upward. A part of the outer edge of the layer 5 is formed. In FIG. 1D, the central region C is formed so as to be sandwiched between the surrounding regions S with respect to the front-rear direction y. In this case, even if the absorbent article is worn while being shifted in the width direction x at the crotch portion of the wearer, urine or the like is suitably received in the central region C, and urine or the like is easily diffused in the central region C.

  In FIG.1 (e), the center area | region C is formed in a substantially T shape, and both ends (both ends of the width direction x of the center area C) of the substantially T-shaped crosspiece part are some outer edges of the upper absorption layer 5. FIG. Forming. If the central region C and the surrounding region S are formed as shown in FIG. 1E, urine and the like easily diffuse in the central region C both in the front-rear direction y and in the width direction x.

  1A to 1E show various formation examples of the central region C and the peripheral region S. As shown in FIGS. 1A and 1C, the peripheral region S is the central region. Adjacent to all of the outer edges of C. If the central region C and the surrounding region S are formed in this way, urine or the like diffused in the central region C is reliably absorbed by the surrounding region S, and side leakage of urine or the like is easily prevented. In this case, the central region C and the peripheral region S may be adjacent to each other. For example, the pulp fibers constituting the peripheral region S are in contact with all the polymer elastic bodies exposed in the outer edge cross section of the central region C. You don't have to. Therefore, air or the like may exist between the elastic polymer constituting the central region C and the pulp fibers constituting the surrounding region S.

  The central region C is preferably formed in a shape that is long in the front-rear direction y, as shown in FIGS. Absorbent articles and absorbent laminates generally have a shape that is long in the front-rear direction y. If the central region C is thus formed, urine and the like are easily diffused in the front-rear direction y, and urine is efficient. The upper absorption layer 5 is well absorbed. The central region C having a shape that is long in the front-rear direction y means that the length of the central region C in the front-rear direction y is longer than the width direction x.

  The length of the central region C with respect to the front-rear direction y is preferably 10% or more of the length of the upper absorbent layer 5 in the front-rear direction y, more preferably 20% or more, preferably 70% or less, and more preferably 60% or less. If the length of the central region C with respect to the front-rear direction y is 10% or more of the length of the upper absorbent layer 5 in the front-rear direction y, urine excreted from the wearer is sufficiently diffused in the front-rear direction y in the central region C. This makes it easier for urine and the like to be readily absorbed by the upper absorbent layer 5. If the length of the central region C with respect to the front-rear direction y is 70% or less of the length of the upper absorbent layer 5 in the front-rear direction y, urine or the like diffused to the end of the central region C in the front-rear direction y It becomes easy to be surely absorbed, and leakage of urine or the like in the front-rear direction y is easily prevented. In addition, the preferable range of the length of the center region C described above is based on a state in which the elastic member (when provided) is disposed on the absorbent article and the absorbent article is completely expanded.

  The central region C is preferably formed on the center line in the width direction x of the upper absorbent layer 5 (center line extending in the front-rear direction y). If the central region C is formed in this way, the central region C easily faces the urination part of the wearer, and the central region C receives urine or the like excreted from the wearer. It becomes easy to spread quickly.

  A preferable example of forming the central region C and the surrounding region S formed in the upper absorbent layer 5 is shown in FIG. In FIG. 2, the peripheral region S is adjacent to the entire outer edge of the central region C, and the central region C has a shape that is long in the front-rear direction y and is substantially line symmetrical with respect to the center line in the width direction x. 2 also shows the upper absorption layer 5, the central region C, and the surrounding region S, as in FIG.

  FIG. 2 (a) is a transcription of FIG. 1 (a). If the central region C and the surrounding region S are formed as shown in FIG. 2A, urine or the like is easily diffused in the front-rear direction y in the central region C. It is surely absorbed by the surrounding area S arranged around the entire circumference of C.

  In FIG. 2B, the central region C is formed with a wide front end. If the central region C is formed in this way, the central region C can easily receive a larger amount of urine or the like excreted from the wearer at the wide front end, and the urine or the like can be easily received from the central region C. It becomes easy to diffuse in the front-rear direction y.

  In FIG. 2C, the rear end of the central region C is branched. The urine diffused in the front-rear direction y tends to accumulate at the rear end of the central region C. If the central region C is formed in this way, the urine diffused in the front-rear direction y is accumulated at the rear end of the central region C. It becomes easy to diffuse in multiple directions at the branched portion, and urine or the like is difficult to collect at the rear end of the central region C. Therefore, it is difficult for the urine or the like to return to the top sheet at the rear end of the central region C, and the wearing feeling of the absorbent article is improved. Furthermore, urine or the like quickly moves to the surrounding region S at the rear end of the central region C and is easily absorbed.

  In FIG. 2C, the rear end of the central region C branches into two, but the number of branches in the central region C is not limited to this and may be three or more. Note that when the number of branches in the central region C increases, the area of the surrounding region S decreases, and the absorption capacity of the upper absorption layer 5 decreases. Therefore, the number of branches at the rear end of the central region C is preferably 2 or 3, and more preferably 2.

  In FIG. 2D, the central region C has a wide front end and a branched rear end. The shape of the central region C shown in FIG. 2D is a combination of the shapes of the central region C shown in FIG. 2B and the central region C shown in FIG. If the central region C is formed in this way, the central region C is likely to receive urine excreted from the wearer at the front side end, and urine etc. diffused in the front-rear direction y in the central region C It becomes easy to be absorbed quickly by the surrounding area S.

  As described above, the absorbent article of the present invention has an absorbent laminate having an upper absorbent layer and a lower absorbent layer, and the upper absorbent layer has a central region and a peripheral region. Therefore, when the upper absorbent layer receives urine or the like excreted from the wearer in the central region, the urine or the like diffuses in the central region, and then the urine or the like is absorbed in the surrounding region adjacent to the central region. Since the central region includes a polymer elastic body having a void inside, the void in the polymer elastic body is retained in the central region even when stress is applied from the outside, and diffusibility of urine or the like is easily secured. Therefore, for example, even when the wearer of the absorbent article is seated, diffusibility of urine or the like in the central region is good. Furthermore, by providing a surrounding area adjacent to the central area, the central area is protected by the surrounding area, and the central area is hard to be pressurized and diffusibility of urine etc. in the central area is ensured. This makes it easier for the urine and the like to reverse in the central region. On the other hand, since the surrounding area includes pulp fibers and is provided adjacent to the central area, urine and the like diffused in the central area can be quickly absorbed. Furthermore, since the lower absorption layer is provided below the upper absorption layer, urine or the like diffused in the central region is also absorbed by the lower absorption layer. Therefore, in the absorbent article of the present invention, urine excreted from the wearer is quickly absorbed, and side leakage such as urine is easily prevented.

  A preferred configuration example of the central region will be described. In the central region, it is preferable that a polymer elastic body having voids therein is provided so as to be exposed on the top sheet side surface of the upper absorbent layer. At this time, it is preferable that the top sheet side surface of the center area | region of an upper side absorption layer is comprised only from the polymeric elastic body which has a space | gap inside. If the central region is configured in this way, the central region receives urine or the like excreted from the wearer, and the urine or the like easily diffuses well in the central region. This will be described with reference to FIGS.

  FIG. 3 and FIG. 4 show a configuration example of the central region C formed in the upper absorption layer 5. 3 represents a plan view of the surface of the upper absorbent layer on the top sheet side, and FIG. 4 represents a cross-sectional view taken along the line AA of the upper absorbent layer shown in FIG.

  In FIG. 3, the central region C has the entire outer edge adjacent to the surrounding region S, and the top sheet side surface of the central region C of the upper absorbent layer 5 is composed of a polymer elastic body 7 having voids therein. If the central region C is configured in this way, when urine or the like excreted from the wearer passes through the top sheet and is accommodated in the central region C, the urine or the like quickly diffuses in the surface direction in the central region C. It becomes easy to do.

  FIG. 4 shows two kinds of cross-sectional views as the AA cross section of FIG. In FIG. 4A, the polymer elastic body 7 is arranged so as to penetrate the central region C of the upper absorbent layer 5 and be exposed on the top sheet side surface and the lower absorbent layer side surface of the upper absorbent layer 5. Yes. In this case, the upper absorbent layer 5 can be formed by forming an opening in a portion corresponding to the central region C of the absorbent material containing pulp fibers and fitting the polymer elastic body 7 in the opening.

  In FIG.4 (b), the polymer elastic body 7 is provided in the top sheet side (upper side) of the center area | region C, and the pulp which comprises the surrounding area S is provided in the lower absorption layer side (lower side) of the center area | region C. Absorbent material including fibers is provided. In this case, the upper absorbent layer 5 can be formed by forming a depression in a portion corresponding to the central region C of the absorbent material containing pulp fibers and fitting the polymer elastic body 7 in the depression.

  In the case where an opening or a depression is formed in a portion corresponding to the central region C of the absorbent material containing pulp fibers, and the upper absorbent layer 5 is formed by applying the polymer elastic body 7 to the opening or depression, the opening or depression has a high height. In order to make it easy to fit the molecular elastic body 7, it is preferable that the polymer elastic body 7 has a smooth outer edge. Further, when the polymer elastic body 7 is formed in this way, a gap between the central region C and the peripheral region S is suppressed as much as possible, and urine etc. flows smoothly from the central region C to the peripheral region S. Easy to migrate.

  The central region C is preferably formed as shown in FIG. For example, as shown in FIG. 4 (b), if an absorbent material containing pulp fibers is disposed on the lower side of the polymer elastic body 7, urine or the like accommodated in the polymer elastic body 7 is converted into the polymer elastic body. 7 is likely to be absorbed by the absorbent material including pulp fibers disposed on the lower side, and urine or the like may not be easily diffused in the plane direction by the polymer elastic body 7. In this case, there is a possibility that the absorption capacity of the surrounding area S may not be fully utilized. However, if the central region C is formed as shown in FIG. 4A, urine or the like is sufficiently diffused in the surface direction by the polymer elastic body 7 so that the absorption capacity of the surrounding region S is fully utilized. Become.

  It is preferable that the polymer elastic body 7 is further disposed so as to penetrate the central region C of the upper absorbent layer 5 and face the top sheet and the lower absorbent layer. That is, in FIG. 4A, it is preferable that the top sheet is adjacent to the upper side of the upper absorbent layer 5 and the lower absorbent layer is adjacent to the lower side of the upper absorbent layer 5. If the absorbent laminate is configured in this manner, urine or the like that has passed through the top sheet is easily accommodated in the polymer elastic body 7 in the central region C, and the thickness of the polymer elastic body 7 is sufficiently secured. As a result, urine and the like are easily diffused in the plane direction by the polymer elastic body 7.

  The polymer elastic body provided in the central region is preferably colored with a different color from the surrounding region. If the polymer elastic body is colored in this way, the wearer can easily visually recognize the central region, and when wearing the absorbent article, the central region can be easily applied to the urine drainage part. Become. In the case where the polymer elastic body is colored, the polymer elastic body is preferably exposed on the top sheet side surface of the upper absorbent layer in order to achieve the effect of coloring appropriately, and the top of the upper absorbent layer More preferably, the central region of the sheet-side surface is composed only of a polymer elastic body.

  Next, the preferable aspect of a lower side absorption layer is demonstrated. The lower absorption layer preferably has a slower absorption rate of urine or the like than the surrounding area. If the lower absorption layer is configured in this manner, urine or the like accommodated in the central region is not readily absorbed by the lower absorption layer, and urine or the like is easily diffused in the plane direction in the central region. Therefore, it is preferable that a lower absorption layer does not contain a pulp fiber as an absorptive material.

  As the lower absorbent layer, it is preferable to use a sheet-like absorbent layer having a water-absorbing resin between the nonwoven fabric sheets and having no pulp fibers. Since the sheet-like absorbent layer has a water absorbent resin between the nonwoven fabric sheets, a high absorption capacity can be realized. Therefore, the absorption capacity of the absorbent laminate can be increased by using a sheet-like absorbent layer as the lower absorbent layer. Moreover, since a sheet-like absorption layer does not have a pulp fiber between nonwoven fabric sheets, it can be formed thinly without being bulky. And since the sheet-like absorbent layer does not have pulp fibers between the nonwoven fabric sheets, it can reduce the absorption rate of urine etc. compared to the surrounding area with pulp fibers, and urine etc. diffuses in the plane direction in the central area. It becomes easy.

  As the water-absorbing resin disposed in the sheet-like absorbent layer, it is preferable to use a polyacrylic acid-based water-absorbing resin such as sodium polyacrylate in terms of having a high absorption capacity.

  The nonwoven fabric sheet used for the sheet-like absorbent layer is liquid permeable. Examples of such a nonwoven fabric sheet include hydrophilic fibers such as cellulose, rayon, and cotton; and hydrophobic fibers such as polypropylene, polyethylene, polyester, and polyamide. What has been made hydrophilic with a surfactant may be used.

  The sheet-like absorbent layer is formed, for example, by placing a water-absorbing resin between two nonwoven fabric sheets composed of an upper nonwoven fabric sheet on the top sheet side and a lower nonwoven fabric sheet on the back sheet side. In this case, each of the upper nonwoven fabric sheet and the lower nonwoven fabric sheet may be composed of a single nonwoven fabric sheet, or two or more nonwoven fabric sheets may be overlapped. Further, the upper nonwoven fabric sheet and the lower nonwoven fabric sheet may be formed by folding one nonwoven fabric sheet with a fold, with one side being the upper nonwoven fabric sheet and the other side being the lower nonwoven fabric sheet. In this case, an absorptive resin is arranged on the inner side where one nonwoven fabric sheet is folded.

  The sheet-like absorbent layer of the lower absorbent layer has a water absorbent resin existing region in which a water absorbent resin is disposed between the nonwoven fabric sheets, and a water absorbent resin non-existing region adjacent to the water absorbent resin present region, It is preferable that the nonwoven fabric sheets are joined to each other in the region where the water absorbent resin is not present. If the sheet-like absorbent layer is formed in this way, urine and the like are easily diffused in the surface direction at the sealing portion where the nonwoven fabric sheets are joined together. Accordingly, the absorption capacity of the lower absorption layer is easily utilized throughout.

  Even if a sealing part absorbs water in a sealing part, it is preferable that joining of a nonwoven fabric sheet is maintained. Therefore, it is preferable to join the nonwoven fabric sheets together by heat fusion, ultrasonic fusion, or an adhesive such as a rubber adhesive or a styrene elastomer. If such a joining means is used, even if the water absorbent resin absorbs water and swells, the joining of the nonwoven fabric sheets is easily maintained. When a rubber adhesive or styrene elastomer is used as the adhesive, examples of the rubber adhesive include natural rubber, butyl rubber, polyisoprene, and the like. Examples of the styrene elastomer include styrene. -Isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), styrene-ethylene-butadiene-styrene block copolymer (SEBS), styrene-ethylene-propylene-styrene block copolymer Examples include coalescence (SEPS).

  In the sheet-like absorbent layer, it is preferable that the water-absorbent resin nonexistent region extends in the front-rear direction of the absorbent laminate. Absorbent articles and absorbent laminates generally have a shape that is long in the front-rear direction. If the water-absorbing resin-free region is formed in this way, urine etc. easily diffuses in the front-rear direction, and urine etc. Is efficiently absorbed in the lower absorbent layer.

  Furthermore, it is preferable that the water-absorbing resin non-existing region is arranged so as to extend in the front-rear direction of the absorbent laminate and to longitudinally cut the central region of the upper absorbent layer. If the central region and the water-absorbing resin non-existing region are arranged in such a positional relationship, even if the water-absorbing resin arranged in the water-absorbing resin existing region absorbs water and swells, it absorbs the water through the central region. By the resin non-existing region, urine and the like that have passed through the central region are easily diffused in the front-rear direction. Also, in the central region of the upper absorbent layer, the polymer elastic body disposed in the central region is hard to be pressed in a portion overlapping with the water-absorbing resin non-existing region, and diffusibility of urine and the like in the front-rear direction is ensured. It becomes easy. Therefore, urine or the like diffused in the front-rear direction in the central area is easily absorbed quickly in the surrounding area.

  When the water-absorbing resin non-existing region is arranged so as to traverse the central region, as long as the water-absorbing resin non-existing region is provided so as to completely traverse the central region in the front-rear direction, any part of the central region is longitudinally crossed. May be. However, the longitudinal length (the length with respect to the front-rear direction) of the central region of the water-absorbing resin non-existing region is preferably 70% or more of the length of the central region in the front-rear direction, and preferably 80% or more. . Therefore, for example, when the rear end of the central region is branched, the water-absorbing resin non-existing region is arranged so as not to overlap with the branched end of the central region, but to overlap with the branch point of the rear end. Also good.

  When the water-absorbing resin non-existing region is arranged so as to cross the central region, the width (length in the width direction) of the water-absorbing resin non-existing region is preferably 5 mm or more, more preferably 10 mm or more, and 15 mm or more. Further preferred. If the width of the water-absorbing resin absence region is 5 mm or more, even if the sheet-shaped absorbent layer absorbs urine and the water-absorbing resin disposed in the water-absorbing resin presence region swells, A sufficient width is easily secured. Therefore, urine or the like is easily diffused in the front-rear direction in the lower absorbent layer, and a diffusion path in the front-rear direction is easily secured in the central region of the upper absorbent layer in a portion overlapping the water-absorbent resin non-existing region.

  Moreover, when employ | adopting a sheet-like absorption layer as a lower absorption layer, it is also preferable to provide a sheet-like absorption layer in the both sides of a center area | region. In this case, the sheet-shaped absorbent layer is provided so as to overlap with the portions located on both sides of the central region of the upper absorbent layer, and the region where the sheet-shaped absorbent layer is not disposed is disposed so as to cut through the central region. Even when the sheet-like absorbent layer is provided in this manner, as described above, the same effect as that in the case where the water-absorbing resin non-existing region of the sheet-like absorbent layer is arranged so as to run through the central region can be obtained.

  When the sheet-like absorbent layer is provided on both sides of the central region, the sheet-like absorbent layer may be disposed so as to overlap a part of the central region. In addition, the separation length (length in the width direction) of the sheet-like absorbent layer provided on both sides of the central region is preferably 5 mm or more, more preferably 10 mm or more, and further preferably 15 mm or more. If the separation length of the sheet-like absorbent layer is 5 mm or more, even if the sheet-like absorbent layer absorbs urine and swells, a sufficient space for urine to diffuse between the sheet-like absorbent layers is easily secured. Accordingly, urine or the like is easily diffused in the front-rear direction in the lower absorbent layer, and also in the central region of the upper absorbent layer, the polymer elastic body disposed in the central region at a portion overlapping the region where the sheet-like absorbent layer is not disposed. Becomes difficult to be pressed and diffusibility of urine and the like in the front-rear direction is easily secured.

  The water absorbent resin existing region and the water absorbent resin non-existing region are preferably provided in a substantially rectangular shape having a length substantially equal to the length of the lower absorbent layer in the front-rear direction. If the water-absorbing resin existing region and the water-absorbing resin non-existing region are provided in this way, urine or the like that has moved to the sheet-like absorbent layer, which is the lower absorbent layer, is likely to diffuse in the front-rear direction, and urine or the like is absorbed downward. Be absorbed quickly by the layer. Moreover, since a water absorbent resin presence area | region and a water absorbent resin non-existence area | region can be formed by spraying a water absorbent resin continuously by the predetermined width to one direction, manufacture of a sheet-like absorption layer becomes easy.

  The absorbent article may be provided with rising flaps extending in the front-rear direction of the absorbent laminate on both sides in the width direction of the absorbent laminate. The rising flaps may be provided, for example, on the upper side of the absorbent laminate, along both side edges of the absorbent laminate, or on both outer sides in the width direction of the absorbent laminate. The rising flap is provided on the upper surface of the absorbent article, and is joined to, for example, the top sheet or both the top sheet and the back sheet folded back on the top sheet. By providing the rising flap, side leakage of excrement such as urine can be prevented. The rising flaps may be formed by raising the inner ends of the side sheets provided on both sides of the top sheet in the width direction. The rising flap and the side sheet are preferably liquid-impermeable.

  It is preferable that the rising flap is bonded to the top sheet at the bonding portion, and the inner end with respect to the width direction of the bonding portion is positioned outward in the width direction with respect to the central region of the upper absorbent body. If the rising flap is provided in this way, the joint portion of the rising flap does not overlap with the central region of the upper absorbent body. Therefore, urine or the like excreted from the wearer is accommodated in the central region without being blocked by the rising flap joint. As a result, urine and the like are easily diffused in the upper absorption layer, and urine and the like are easily absorbed.

  An example of the embodiment of the absorbent article of the present invention will be described with reference to the drawings. 5 to 7 show an embodiment of the absorbent article of the present invention. FIG. 5: represents the top view which looked at the urine pad as an absorbent article from the top sheet side. FIG. 6 shows a plan view of the absorbent laminate of the absorbent article shown in FIG. 5 as viewed from the top sheet side. FIG. 7 is a cross-sectional view taken along the line BB of the absorbent article in FIG. 5 and 6, the upper side of the figure corresponds to the front side (abdomen side) of the wearer, and the lower side of the figure corresponds to the rear side (back side) of the wearer.

  The absorbent article 1 includes a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and an absorbent laminate 4 provided therebetween. The top sheet 2 is disposed so as to face the wearer's skin, and allows excretion such as urine to pass through. The excrement that has passed through the top sheet 2 is accommodated by the absorbent laminate 4. The back sheet 3 prevents excrement from leaking outside.

  The absorbent laminate 4 has a front-rear direction y and a width direction x, and has an upper absorbent layer 5 and a lower absorbent layer 6 from the top sheet 2 side. The upper absorbent layer 5 has a central region C and a surrounding region S adjacent to the entire outer edge of the central region C. The central area C includes a polymer elastic body 7 having voids therein, and the surrounding area S includes pulp fibers. The urine etc. excreted from the wearer is promoted to diffuse in the central region C, and the urine etc. diffused in the central region C is absorbed by the adjacent surrounding region S.

  In the absorbent article 1, as shown in FIGS. 5 and 6, since the central region C is formed in a shape that is long in the front-rear direction y, when the central region C receives urine or the like, the urine or the like follows the central region C. Thus, it becomes easy to diffuse in the front-rear direction y. The urine or the like diffused in the central area C in the front-rear direction y is easily absorbed quickly by the surrounding area S. The center region C has a wide front end and a branched rear end. The central region C is easy to receive urine excreted from the wearer at the wide front end, and the urine etc. is easily diffused in multiple directions at the branched rear end. It becomes easy to be absorbed quickly.

  In the absorbent article 1, as shown in FIG. 7, the polymer elastic body 7 having voids inside penetrates the central region C of the upper absorbent layer 5 and faces the top sheet 2 and the lower absorbent layer 6. It is arranged in. If the absorbent laminate 4 is configured in this manner, urine or the like that has passed through the top sheet 2 can be easily accommodated in the polymer elastic body 7 in the central region C, and urine or the like can be easily stored in the polymer elastic body 7. It becomes easy to diffuse in the surface direction.

  As shown in FIG. 7, the lower absorbent layer 6 preferably has a water absorbent resin 8 between the nonwoven fabric sheets 9 and 9 and has no pulp fibers. If the lower absorbent layer 6 is configured in this way, since the lower absorbent layer 6 does not contain pulp fibers as an absorbent material, urine or the like accommodated in the central region C immediately enters the lower absorbent layer 6. The urine and the like are easily diffused in the plane direction in the central region C. On the other hand, urine or the like diffused in the plane direction in the central region C is quickly absorbed by the surrounding region S containing pulp fibers. Accordingly, the absorbent article 1 can sufficiently utilize the entire absorbent capacity of the absorbent laminate 4 while realizing rapid absorption of urine and the like. Moreover, if the lower absorption layer 6 has the water absorbent resin 8 between the nonwoven fabric sheets 9 and 9 and does not have pulp fibers, the absorption capacity can be increased even though it can be formed thin.

  The lower absorbent layer 6 includes a water absorbent resin existing region 10 in which a water absorbent resin 8 is disposed between the nonwoven fabric sheets 9 and 9 and a water absorbent resin non-existing region 11 adjacent to the water absorbent resin present region 10. And the nonwoven fabric sheets 9 and 9 are joined to each other in the water-absorbing resin non-existing region 11 (FIGS. 6 and 7). If the lower absorbent layer 6 is formed in this way, urine and the like are easily diffused in the surface direction at the sealing portion where the nonwoven fabric sheets 9 and 9 are joined. Therefore, the absorption capacity of the lower absorption layer 6 is easily utilized throughout. Furthermore, the water absorbent resin non-existing region 11 extends in the front-rear direction y and is arranged so as to longitudinally cross the central region C in the front-rear direction y. Even if the resin 8 absorbs water and swells, urine or the like that has passed through the central region C easily diffuses in the front-rear direction y due to the water-absorbing resin non-existing region 11 that longitudinally crosses the central region C in the front-rear direction y. Further, also in the central region C of the upper absorbent layer 5, the polymer elastic body 7 is not strongly pressed in a portion overlapping with the water absorbent resin non-existing region 11, and diffusibility of urine or the like in the front-rear direction y is easily ensured. Become.

  Side sheets 12 extending in the front-rear direction y are joined to both sides of the top sheet 2 in the width direction x. The side sheet 12 is composed of a liquid-impermeable plastic film, a liquid-impermeable nonwoven fabric, or the like. The side seat 12 is provided with a standing elastic member 14 at the inner end in the width direction x. The side sheet 12 rises toward the wearer's skin due to the contraction force of the standing elastic member 14, thereby forming a rising flap 13, and lateral leakage in the width direction x such as urine is caused. Is prevented. Note that the inner surface of the end portion in the front-rear direction y of the rising flap 13 may be joined to the top sheet 2, thereby preventing leakage of urine or the like outward in the front-rear direction y.

  The rising flap 13 extending in the front-rear direction y is joined to the top sheet 2 at the joining portion 15. In FIG. 7, the top sheet 2 is formed narrower in the width direction x than the back sheet 3, and the rising flap 13 is joined across the top sheet 2 and the back sheet 3. In the joint portion 15, the inner end 15 </ b> E with respect to the width direction x is located outside the center region C in the width direction x. Therefore, urine etc. excreted from the wearer can be easily stored in the central region C without being blocked by the joint 15 of the rising flap 13, and the diffusion of urine or the like in the central region C is promoted.

1: Absorbent article (urine pad)
2: Top sheet 3: Back sheet 4: Absorbent laminate 5: Upper absorbent layer 6: Lower absorbent layer 7: Polymer elastic body having voids inside C: Central region S: Surrounding region

Claims (11)

An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent laminate provided therebetween,
The absorbent laminate has a front-rear direction and a width direction, and has an upper absorbent layer and a lower absorbent layer from the topsheet side,
The upper absorbent layer includes a central region in which a polymer elastic body having voids is disposed through the upper absorbent layer, and a periphery including pulp fibers adjacent to a part or all of the outer edge of the central region. And having an area
Absorbent article wherein the lower absorbent layer, the absorbent material possess, and wherein the slow absorption rate than the surrounding region. An absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent laminate provided therebetween,
The absorbent laminate has a front-rear direction and a width direction, and has an upper absorbent layer and a lower absorbent layer from the topsheet side,
The upper absorbent layer includes a central region in which a polymer elastic body having voids is disposed through the upper absorbent layer, and a periphery including pulp fibers adjacent to a part or all of the outer edge of the central region. And having an area
The said lower side absorption layer is a thing which has a water absorbing resin between nonwoven fabric sheets, and does not have a pulp fiber, The absorbent article characterized by the above-mentioned. The lower absorbent layer has a water absorbent resin existing region in which a water absorbent resin is disposed between the nonwoven fabric sheets, and a water absorbent resin absent region adjacent to the water absorbent resin present region,
The absorptive article according to claim 2 in which nonwoven fabric sheets are joined in said water-absorbent resin absence field. 4. The absorbent article according to claim 3 , wherein the water-absorbent resin-free region extends in the front-rear direction of the absorbent laminate and is disposed so as to cut through the central region. The absorbent article according to claim 2 or 3 , wherein the lower absorbent layer is provided on both sides of the central region. The absorbent article according to any one of claims 1 to 5, wherein the peripheral region is adjacent to the entire outer edge of the central region. The absorbent article according to claim 6 , wherein the central region is formed in a shape that is long in the front-rear direction of the absorbent laminate. The absorbent article according to claim 7 , wherein the central region has a wide front end. The absorbent article according to claim 7 or 8 , wherein a rear end of the central region is branched. The absorbent article according to any one of claims 1 to 9, wherein the polymer elastic body having voids therein comprises a polymer structure having a lattice structure therein. A rising flap extending in the front-rear direction of the absorbent laminate is joined to the top sheet at the joint,
The absorbent article according to any one of claims 1 to 10, wherein an inner end of the joint portion with respect to the width direction is positioned outward of the center region in the width direction.

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