JP4012135B2 - Disposable diapers - Google Patents

Description

  The present invention relates to a disposable diaper intended to effectively prevent stool leakage.

  Disposable diapers are roughly classified into flat types and pants types. A flat-type disposable diaper has an absorbent body between an outer sheet made by bonding a nonwoven fabric to the outer surface of a liquid-impermeable sheet and having a cloth-like feel and an inner sheet made of a liquid-permeable sheet such as a nonwoven fabric. A front side flap and a rear side flap that are formed in a vertically long shape extending from the front waist part through the crotch part to the rear waist part and extending outward on both sides to the front waist part and the rear waist part, respectively. Is provided. A fastening tape is provided on the rear side flap, and a front target tape is provided on the front waist, and the rear waist is applied to the back of the wearer and the front waist is applied to the abdomen. The disposable diaper is attached by fastening the flap fastening tape to the front target tape at the front waist.

  The pants-type disposable diaper is formed by joining a front side flap and a rear side flap of a flat type disposable diaper to form a pair of left and right leg openings and a waist opening, and the basic configuration is the same as that of the flat type.

  With reference to FIG. 6, an example of the basic configuration of a conventional pants-type disposable diaper 31 will be described. As shown in FIGS. A non-woven fabric is bonded to the outer surface of a liquid-impermeable sheet such as a polyethylene sheet having the same shape as an inner sheet 32 made of a liquid-permeable sheet such as a nonwoven fabric having a notch 35 that forms the opening 34 to provide a cloth-like feel. A rectangular absorbent body 38 extending in the front-rear direction between the waistline forming portions 37, 37 at both ends with a width substantially equal to the width of the crotch portion 36 between the notches 35, 35 is disposed between the outer surface sheet 33 and the outer sheet 33. Further, the absorbent body 38 is provided with a liquid diffusion sheet 40 so as to cover the surface of the crotch portion 36 and a urine absorption region 39 having high absorbability in a range extending from the crotch portion 36 and the front portion thereof. One The sheet-like body is folded in half at the center position in the front-rear direction and the welded portions 41 on both sides are thermally welded to each other. A pants-type disposable diaper 31 having a leg opening 34 is formed.

  In such a disposable diaper 31, it is necessary to store and hold not only urine but also stool, and it is necessary to reliably store and hold particularly high-fluidity stool to prevent stool leakage. Although it is required, it is difficult for the stool to be absorbed smoothly by the absorbent body 38 through the liquid diffusion sheet 40 even if the stool has high fluidity. Therefore, in order to prevent stool that is not absorbed from leaking from the leg opening 34, A three-dimensional gathering portion is formed on both sides of the portion 36, and the three-dimensional gathering portion is configured to stop stool.

  However, the structure that dams up with the above three-dimensional gather part does not store and hold the stool, so there is a problem that stool leakage is likely to occur, and therefore, a pocket-shaped hole or recess is formed in the absorbent body. Various proposals have been proposed in which stool is poured and stored.

  For example, the absorbent body is composed of an upper layer absorbent body and a lower layer absorbent body, the upper layer absorbent body is divided into a front side and a rear side, the space between them is separated at the buttocks contact portion, and the inner sheet is separated from the front and rear absorbent bodies It is known that a stool holding pocket is formed by being bent at a portion and folded between upper and lower absorbent bodies (see, for example, Patent Document 1).

  In addition, there is also known an apparatus in which a space for storing feces is disposed on an absorber and a spacer having a fecal permeation opening is disposed (see, for example, Patent Document 2).

In addition, a structure in which a layer made of a large number of continuous filaments and having a high compression elastic recovery rate and a high porosity is disposed on an absorbent body (see, for example, Patent Document 3).
JP-A-8-196565 Japanese Patent Laid-Open No. 10-192339 Japanese Patent Laid-Open No. 10-192342

  By the way, in the disposable diaper having the stool storage configuration disclosed in each of the above-mentioned patent documents, the absorbent body has a double structure, and spacers and filament layers are arranged on the absorbent body. There is a problem that the thickness of the crotch portion is not good because the thickness of the crotch portion is increased or a thick structure is disposed in the crotch portion.

  In view of the above-mentioned conventional problems, the present invention is a disposable diaper that can store and hold stool and reliably prevent stool leakage while the thickness of the folded portion of the diaper is not increased and the appearance of the crotch portion is clean. The purpose is to provide.

In the disposable diaper of the present invention, an absorbent body made of pulp and a superabsorbent polymer is disposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet, and the liquid diffusion sheet is disposed between the absorber and the inner sheet. In a disposable diaper with a stool interposed therebetween, a stool receiving area is provided at a position corresponding to a defecation location on the rear side of the center position in the front-rear direction of the crotch part. The non-arranged portion of the liquid diffusion sheet is provided in the stool receiving area, and the non-arranged portion of the liquid diffusion sheet is configured by a hole formed in the liquid diffusion sheet . According to this configuration, the stool that has flowed out from the defecation point is held in the receiving space that is easily recessed due to the low basis weight of the superabsorbent polymer, and even in the case of highly fluid stool, Since the basis weight of the highly absorbent polymer that swells greatly is small, the stool receiving space is not reduced by the swelling of the highly absorbent polymer, and the stool can be smoothly received to reliably prevent stool leakage. Moreover, since the absorbent body is not made into a two-layer structure in order to form a stool receiving space, the thickness of the folded portion of the diaper is not increased, and the appearance of the crotch portion is refreshed. In addition, since the non-placement part of the liquid diffusion sheet is provided in the stool receiving area, the stool is difficult to permeate the liquid diffusion sheet even when the liquidity is high. Since it flows smoothly to the absorber side through the part, the stool can be received smoothly. Furthermore, since the non-arranged portion of the liquid diffusion sheet is configured with holes formed in the liquid diffusion sheet, the arrangement process of the liquid diffusion sheet is not complicated, and productivity is reduced to prevent stool leakage. Can be prevented. Further, it is preferable that a plurality of the holes are formed.

Further, a disposable in which an absorbent body made of pulp and a superabsorbent polymer is disposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet, and a liquid diffusion sheet is interposed between the absorber and the inner sheet. In the diaper, a stool receiving area is provided at a position corresponding to the defecation location on the rear side of the crotch front-rear direction center position, and this stool receiving area is configured with a basis weight of the high-absorbent polymer less than other parts, The same effect can be obtained by providing a non-arranged portion of the liquid diffusion sheet in the stool receiving area and arranging the liquid diffusion sheet before and after the non-arranged portion of the liquid diffusion sheet. Moreover, it is preferable that the liquid diffusion sheet is disposed over the entire length of the absorbent body except for the feces receiving area.

  Further, if the portion of the absorbent body corresponding to the feces receiving area has a smaller basis weight of the pulp than the other portions, the feces receiving space in the absorbent body can be further increased.

  Also, if the area extending from the crotch part to the front part is a urine absorption area where the liquid diffusion sheet is disposed and the basis weight of the high absorption polymer is larger than that of other parts, urination is performed in the urine absorption area at the front part of the crotch part. Since it can be absorbed in large quantities, it is possible to suppress the urine from turning to the stool receiving area corresponding to the defecation point, and to maintain the stool receiving performance.

Further, the urine absorbing area of the absorbent body, 150 to 300 g / m ² pulp basis weight, the superabsorbent polymer basis weight and 150~340g / m ^2, stool acceptance region, the pulp basis weight 60 to 100 [g / m ^2, By setting the high-absorption polymer basis weight to 20 to 40 g / m ² , a high urine absorption capacity can be obtained and the reduction of the space in the stool receiving area due to the swelling of the absorbent due to the absorption of urine can be suppressed. Stool can be stored effectively.

  In addition, by setting the length of the flight receiving area in the front-rear direction to 80 to 20 mm, a large amount of flights can be received reliably and effectively.

  In addition, if the inner sheet is formed with a longitudinal ridge that deepens toward the non-arranged part of the liquid diffusion sheet, the stool can be guided and stored in the stool receiving area by the longitudinal fold, which is more effective. Can prevent stool leakage.

According to the disposable diaper of the present invention, the stool that has flowed out from the defecation point is held in the receiving space that is easily recessed because the basis weight of the superabsorbent polymer is small, and even in the case of a highly fluid stool Since the weight of the superabsorbent polymer that swells greatly due to liquid absorption is small, the stool reception space is not reduced due to the swelling of the superabsorbent polymer, and stool can be received smoothly, ensuring stool leakage In addition, since the absorbent body is not made into a two-layer structure in order to form a stool receiving space, the thickness of the folded portion of the diaper is not increased, and the appearance of the crotch portion is also refreshed. I can expect. In addition, since the non-placement part of the liquid diffusion sheet is provided in the stool receiving area, the stool is difficult to permeate the liquid diffusion sheet even when the liquidity is high. Since it flows smoothly to the absorber side through the part, the stool can be received smoothly. Furthermore, since the non-arranged portion of the liquid diffusion sheet is configured with holes formed in the liquid diffusion sheet, the arrangement process of the liquid diffusion sheet is not complicated, and productivity is reduced to prevent stool leakage. Can be prevented.

  Hereinafter, an embodiment of the disposable diaper of the present invention will be described with reference to the accompanying drawings for understanding of the present invention. The embodiments described below show examples embodying the present invention, and do not limit the technical scope of the present invention.

(First embodiment)
First, a first embodiment in which the present invention is applied to a pants-type disposable diaper will be described with reference to FIGS.

  In FIG. 1, 1 is a pants-type disposable diaper, as shown in FIGS. 1 (b) and 1 (c), a non-woven fabric having notches 5 that form a rectangular shape and have leg openings 4 on both sides in an unfolded state. An inner sheet 2 made of a liquid permeable sheet, and an outer sheet 3 having a cloth-like feel by bonding a nonwoven fabric 3b to the outer surface of a liquid impermeable sheet 3a such as a polyethylene sheet of the same shape. In the middle, a rectangular shape extending in the front-rear direction between the waistline forming portions 7 and 7 at both ends with a width substantially equal to the width of the crotch portion 6 between the notches 5 and 5 and a narrow width portion 9 slightly narrower in the crotch portion is formed. The absorbent body 8 is arranged.

  The absorbent body 8 is composed of pulp and a superabsorbent polymer that has very high moisture absorption characteristics and absorbs and swells 20 to 30 times the volume of urine. Further, the absorbent body 8 is formed with a urine absorption region 10 having a high absorbency by increasing the basis weight of the pulp and the superabsorbent polymer in the range extending between the crotch portion 6 and the front portion thereof than other portions, and A liquid diffusion sheet 11 made of a non-woven fabric having an appropriate thickness so as to cover at least the surface thereof and diffusing urine over the entire surface by the capillary action is disposed, and urine is concentrated on the local area of the absorbent body 8 so that only that portion is extreme. It is configured to prevent swelling.

  Further, a stool receiving region 13 for receiving stool over an appropriate length range L in the front-rear direction is formed at a position corresponding to a defecation location on the rear side of the crotch 6 in the front-rear direction central position 12. The stool receiving region 13 is configured by providing a non-arranged portion 14 where the liquid diffusion sheet 11 is not disposed and a low basis weight portion 15 in which the basis weight of the pulp and the superabsorbent polymer is less than the other portions in the absorbent body 8. ing. The non-arranged portion 14 is formed by intermittently sticking the liquid diffusion sheet 11 with an interval of the length L in the front-rear direction. The non-arranged portion 14 is also arranged at an appropriate length on the rear portion of the non-arranged portion 14. Even when lying on its back, urine is diffused and absorbed within an appropriate range. In the stool receiving area 13, the length and position in the front-rear direction of the non-arranged portion 14 of the liquid diffusion sheet 11 and the low weighted portion 15 of the absorbent body 8 do not necessarily have to be exactly the same.

  The inner surface sheet 2, the liquid diffusion sheet 11, the absorber 8 and the outer sheet 3 are heat-bonded to each other to form an integrated sheet-like body, folded in half at the center position 12 in the front-rear direction, and formed on both side edges excluding the notch 5 As shown in FIG. 1 (a), the welded portions 16 are heat-welded to each other, whereby a pants-type disposable diaper 1 having a waist opening 17 formed by a waistline forming portion 7 on the upper side and leg openings 4 on both lower sides, as shown in FIG. Is configured.

  Although not shown in the figure, the waistline forming portion 7 is configured so that an elastic contraction body such as a rubber band is built in so that the waist opening 17 fits the wearer's torso. The leg opening 4 is provided with a three-dimensional gather portion (not shown) so that urine and stool do not leak from a gap between the leg opening 4 and the wearer's leg. This three-dimensional gather part, for example, folds a liquid-permeable sheet into a U-shaped cross section, arranges a liquid-impermeable sheet therein, and has a plurality of thread rubbers arranged at appropriate intervals inside The edge portion on the overlapping side of the sheet is configured to adhere to a joint portion between the side edge portion of the outer sheet and the side edge portion of the inner sheet that is bent so as to wrap the absorber.

  The above-described configuration shown in FIG. 1 shows a basic configuration. Next, a specific configuration example of the present embodiment will be described with reference to FIGS.

  2 and 3, the liquid diffusion sheet 11 is attached to the upper surface of the absorbent body 8 in which the low weight portion 15 of the urine absorption region 10 and the feces receiving region 13 is formed, and the upper surface side is a liquid permeable sheet such as a nonwoven fabric. The liquid impervious sheet 3a is disposed on the lower surface side while being covered with the inner surface sheet 2, and an absorbent pad 20 surrounding the absorbent body 8 and the liquid diffusion sheet 11 is formed by thermally welding the periphery thereof. A plurality of vertical rods 21 extending in front and rear of the toilet receiving area 13 are formed in parallel on the inner surface sheet 2 of the absorbent pad 20 so as to guide the stool toward the toilet receiving area 13.

  On both sides of the absorbent pad 20, there are provided three-dimensional gather portions 22 for preventing leakage from urine and feces around the legs. As shown in FIG. 3, the three-dimensional gathered portion 22 is formed by folding a leg-surrounding sheet 23 made of a nonwoven fabric or the like having substantially the entire length of the absorbent pad 20 into a U shape in the width direction over the entire length, The liquid-impermeable sheet 24 is disposed over the plurality of thread rubbers 25 at appropriate intervals, and the side edge portion on the overlapping side of the leg-surrounding sheet 23 and the vicinity thereof are the side edge portions of the absorbent pad 20. The outer circumferential side is superposed so as to be wrapped from the inner side to the inner side, and the two ends in the front-rear direction are formed by superposing the folding side of the leg-surrounding sheet 23 on the upper side of the absorbent pad 20 and performing thermal welding. ing.

  The absorbent pad 20 provided with the three-dimensional gathered portion 22 is disposed in the center portion in the width direction of the rectangular base sheet 26 and thermally welded to each other, so that as shown in FIG. Is configured. The base sheet 26 is made of a non-woven fabric or the like that gives a cloth-like feel, and both end portions form a waistline forming portion 27, and have notches 28 corresponding to the leg periphery portions on both sides of the longitudinal center portion. The part 27 incorporates an elastic contraction member (not shown). Further, presser sheet portions 29 that cover both end portions of the absorbent pad 20 are extended from both ends of the base sheet 26.

  According to the disposable diaper 1 having the above-described configuration, the stool that has flowed out from the defecation point does not exist in the liquid diffusion sheet 11 and has a small basis weight of pulp and high-absorption polymer, so that it is easily recessed. In the case of stool that is held and has high fluidity, the liquid diffusion sheet 11 is difficult to permeate, but smoothly flows through the non-arranged portion 14 of the liquid diffusion sheet 11 into the low basis weight 15 formed in the absorbent body 8, and In this low basis weight 15, since the basis weight of the superabsorbent polymer that swells greatly by absorption of liquid is small, the stool acceptance space is not reduced by swelling of the superabsorbent polymer, so that the stool acceptance space can be secured. As a result, stool leakage can be reliably prevented. Moreover, since the absorbent body 8 has a two-layer structure in order to form a stool receiving space, or a member that secures the space on the upper surface thereof is not disposed, the thickness of the folded portion of the disposable diaper 1 is increased. Without a doubt, the appearance of the crotch portion 6 is refreshed.

  In addition, the liquid diffusion sheet 11 is disposed in the region extending from the crotch portion 6 to the front portion thereof, and the urine absorption region 10 in which the basis weight of the superabsorbent polymer is increased as compared with other portions is disposed. Can be absorbed in a large amount in the front urine absorption region 10, so that it is possible to suppress the urine from turning to the stool receiving region 13 corresponding to the defecation point, and to maintain the stool receiving performance.

As a specific numerical example, the entire absorbent body 8 has a pulp basis weight of 50 to 300 g / m ² and a superabsorbent polymer set to a range of 120 to 340 g / m ^{2. In} the urine absorption region 10, the pulp basis weight is 150. ˜300 g / m ² , the superabsorbent polymer is set to a high numerical range of 150 to 340 g / m ^2, and in the low basis weight 15 of the feces receiving area 13, the pulp basis weight is 50 to 300 g / m ² and the superabsorbent polymer is It is set in a range greatly reduced to ¹ to 50 g / m ² . Also, stool basis weight of pulp and superabsorbent polymers of low basis weight portion 15 of the acceptance region 13 is preferably 60 to 100 / m ² pulp basis weight, superabsorbent polymer 20 to 40 g / m ^2, optimally pulp The basis weight is 70 g / m ² and the superabsorbent polymer is 30 g / m ² .

  The length in the front-rear direction of the flight receiving area 13 is set within a range of 20 to 80 mm. That is, if it is 20 mm or less, the fecal leakage prevention action is not sufficient, and if it exceeds 80 mm, the urine leakage prevention action of the absorbent body 8 is adversely affected, and 40 to 80 mm is particularly preferred.

  Next, an experimental example of the disposable diaper will be described.

[Experimental Example 1]
When the disposable diaper 1 is deployed, the stool flows out of the diaper when the stool is dripped at a constant flow rate of 3 cc / sec from the defecation point and attached to a 30 ° inclined plate with the front side (abdominal side) facing down. The amount of feces absorbed was measured. As a sample, as shown in Table 1, as Examples 1 to 3, the length of the non-arranged portion 14 of the liquid diffusion sheet 11 in the stool receiving region 13 is 40 mm, and the pulp and the superabsorbent polymer of the low basis weight portion 15 What changed the total fabric weight was used. Further, as Examples 4 and 5, the total basis weight of the pulp of the low basis weight portion 15 and the high absorption polymer is 100 g / m ^2, and the length of the non-arranged portion 14 of the liquid diffusion sheet 11 in the stool receiving area 13 is 80 to 80. What was changed between 20 mm was used. In addition, a comparative example corresponding to a conventional example in which the flight receiving area 13 is not provided is used.

表１において、実施例１〜５と比較例から便受納領域１３を設けることで便の吸収量が大きくなることが分かる。また、実施例１と実施例２から便受納領域１３の低目付け部１５における目付けが小さい程、便を保持し易いことが確認されるとともに、実施例３から目付けが小さ過ぎると逆に便の保持量が低下してしまうことが分かる。また、実施例４と実施例１と実施例５の比較から非配置部１４の長さが長いほど、便を保持し易いことが分かる。ただし、非配置部１４の長さを８０ｍｍ以上にすると、逆に尿漏れ防止効果が低減するという弊害を生じることが別途確認されている。

In Table 1, it can be seen from Examples 1 to 5 and the comparative example that the amount of feces absorbed increases by providing the feces receiving area 13. In addition, it is confirmed from Example 1 and Example 2 that the smaller the basis weight at the low basis weight portion 15 of the feces receiving area 13 is, the easier it is to hold the stool. It can be seen that the holding amount of is reduced. In addition, it can be seen from comparison between Example 4, Example 1, and Example 5 that the longer the non-arranged portion 14 is, the easier it is to hold feces. However, it has been separately confirmed that when the length of the non-arrangement portion 14 is 80 mm or more, the adverse effect of reducing the urine leakage prevention effect is caused.

From this experimental example, it can be seen that the most suitable specification is that the length of the non-arranged portion 14 is 80 mm, and the total basis weight of the pulp of the low basis weight 15 and the high absorption polymer is 100 g / m ² .

In addition, when the fecal leakage rate was investigated in a state where 30 disposable disposable diapers were actually mounted on 30 monitors, the conventional example was about 5%, but the one in Example 4 above. It was reduced to 4% and about 4.5% in Example 1.
(Second Embodiment)
Next, 2nd Embodiment of the disposable diaper of this invention is described with reference to FIG. In the following embodiments, the same components as those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and only differences are described. In FIG. 4, in the stool receiving area 13 of this embodiment, the low weight part 15 of the absorber 8 is provided over the entire width of the absorbent body 8, and the length of the stool receiving area 13 in the front-rear direction is relative to the width. Is set to a small value. Further, the liquid diffusion sheet 11 is disposed over the entire length of the absorbent body 8 except for the feces receiving area 13.

  Also in the above configuration, the same fecal leakage prevention effect as that of the first embodiment can be obtained, and the process of forming the low weight portion 15 in the absorbent body 8 can be simplified. In addition, since the liquid diffusion sheet 11 is arranged over the entire length of the absorbent body 8 except for the feces receiving area 13, before the absorbent body continuous body is cut at a predetermined location and divided for each absorbent body 8. The liquid diffusion sheet 11 of that length is disposed between the low basis weight portions 15 and 15 at the same pitch interval as the feed pitch interval at the time of cutting, and then manufactured by cutting the continuous body of the absorber at a predetermined location, Therefore, the process of disposing the liquid diffusion sheet 11 on both front and rear sides of the stool receiving area 13 can be simplified, and the absorbent body 8 on which the liquid diffusion sheet 11 is disposed can be manufactured easily and with high productivity.

(Third embodiment)
Next, 3rd Embodiment of the disposable diaper of this invention is described with reference to FIG.

  In FIG. 5, in the stool acceptance area 13 of the present embodiment, the non-arranged portion 14 of the liquid diffusion sheet 11 is configured by a hole 30 formed in the liquid diffusion sheet. In the illustrated example, an example in which a single hole 30 is formed is shown, but even if two or three holes are formed in parallel or staggered, a large number of holes are within the formation range of the low weight portion of the absorber. Alternatively, they may be dispersedly formed.

  Even in the above configuration, the same fecal leakage prevention action as that of the first embodiment can be obtained, the arrangement process of the liquid diffusion sheet 11 is not complicated, and the productivity is lowered to prevent the fecal leakage. Can be prevented.

  In the above embodiment, an example in which the present invention is applied to a pants-type disposable diaper has been described. However, even if the present invention is applied to a flat-type disposable diaper, the same effect is obtained and a great effect in preventing stool leakage is obtained. Can be demonstrated.

The basic structure of the disposable diaper of the 1st Embodiment of this invention is shown, (a) is a front view, (b) is an expanded view, (c) is an AA arrow cross-sectional exploded view of (b). It is a perspective view of the specific structural example of the disposable diaper of the embodiment. FIG. 3 is a schematic cross-sectional view taken along line BB in FIG. The basic composition of the disposable diaper of the 2nd Embodiment of this invention is shown, (a) is a front view, (b) is an expanded view, (c) is CC sectional view exploded view of (b). The basic composition of the disposable diaper of the 3rd embodiment of the present invention is shown, (a) is a front view, (b) is an expanded view, and (c) is a DD arrow section exploded view of (b). The structure of the disposable diaper of a prior art example is shown, (a) is a front view, (b) is an expanded view, (c) is a EE arrow cross-sectional exploded view of (b).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disposable diaper 2 Inner surface sheet 3 Outer surface sheet 6 Crotch part 8 Absorber 10 Urine absorption area 11 Liquid diffusion sheet 13 Stool receiving area 14 Non-arrangement part 15 Low weight part 30 Hole

Claims (9)

In a disposable diaper in which an absorbent body made of a pulp and a superabsorbent polymer is disposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet, and a liquid diffusion sheet is interposed between the absorbent body and the inner sheet. A stool receiving area is provided at a position corresponding to a defecation point on the rear side of the crotch front-rear direction center position, and the stool receiving area is configured with a basis weight of the superabsorbent polymer less than other parts , A disposable diaper characterized in that a non-arranged portion of a liquid diffusion sheet is provided in the receiving area, and the non-arranged portion of the liquid diffusion sheet is configured by holes formed in the liquid diffusion sheet . The disposable diaper according to claim 1, wherein a plurality of the holes are formed . In a disposable diaper in which an absorbent body made of a pulp and a superabsorbent polymer is disposed between a liquid-permeable inner sheet and a liquid-impermeable outer sheet, and a liquid diffusion sheet is interposed between the absorbent body and the inner sheet. A stool receiving area is provided at a position corresponding to a defecation point on the rear side of the crotch front-rear direction center position, and the stool receiving area is configured with a basis weight of the superabsorbent polymer less than other parts, A disposable diaper characterized in that a non-arranged portion of a liquid diffusion sheet is provided in the receiving area, and the liquid diffusion sheet is arranged before and after the non-arranged portion of the liquid diffusion sheet . The disposable diaper according to claim 3 , wherein the liquid diffusion sheet is disposed over the entire length of the absorbent body except for the feces receiving area . The disposable diaper according to any one of claims 1 to 4, wherein the portion of the absorbent body corresponding to the stool receiving area has a basis weight of pulp less than other portions. The region spanning the front from the crotch portion, with placing the liquid-diffusing sheet, according to any one of claims 1 to 5, characterized in that the basis weight of the superabsorbent polymer was the other portions more urine absorbing area Disposable diapers. Urine absorbent area of the absorbent body, 150 to 300 g / m ² pulp basis weight, the superabsorbent polymer basis weight and 150~340g / m ^2, stool acceptance region, the pulp basis weight 60 to 100 [g / m ^2, high absorption the disposable diaper according to claim 6, characterized in that the polymer mass per unit area and 20~40 g / m ^2. The disposable diaper according to any one of claims 1 to 7, wherein the length of the stool receiving region in the front-rear direction is 80 to 20 mm. The disposable diaper according to any one of claims 1 to 8, wherein a vertical fold in the front-rear direction is formed on the inner surface sheet so as to become deeper toward the non-arranged portion of the liquid diffusion sheet.

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