JP3218599U - Disposable diapers - Google Patents

Abstract

Disclosed is a disposable diaper capable of suppressing gaps with respect to the body and suppressing leakage by further improving fit to the body. A disposable diaper includes a front and rear direction and a width direction orthogonal to each other, a front waistline region, a rear waistline region, a crotch region disposed between the front waistline region and the rear waistline region, and at least a crotch region The absorbent core 31 is disposed in the grid, and the lattice squeezed portions 85 are arranged in a grid pattern in the absorbent core. The absorbent core in the crotch region can be deformed by a pair of deformation guiding portions that extend in the front-rear direction and are spaced apart in the width direction. At least a part of the lattice squeezing part is provided in a region sandwiched between the pair of deformation guiding parts. [Selection] Figure 3

Description

  [Technical Field] The present invention relates to a disposable diaper having a grid pressing portion arranged in a grid pattern on an absorbent core.

  A disposable diaper having a lattice pressing portion arranged in a lattice shape on an absorbent core is disclosed (for example, see Patent Document 1). A lattice pressing part has the 1st pressing part extended in the 1st inclination direction which inclines in the front-back direction and the width direction, and the 2nd pressing part extended in the 2nd inclination direction which crosses the 1st inclination direction. The 1st pressing part and the 2nd pressing part are formed over the whole region of an absorption core, respectively. Therefore, it is possible to increase the rigidity over the entire area of the absorption core and suppress the swelling after the absorption of the body fluid, thereby improving the wearing feeling.

2014-1002 gazette

  In the above-mentioned disposable diaper, a lattice squeezing part is formed over the entire area of the absorbent core, and the rigidity is increased over the entire area of the absorbent core. Due to the high rigidity of the absorbent core, there is a possibility that sufficient fit to the body cannot be obtained.

  Therefore, the disposable diaper which can suppress the clearance gap with respect to a body and can suppress a leak by improving the fitting property with respect to a body is desired.

  The disposable diaper according to one aspect includes a front-rear direction and a width direction orthogonal to each other, a front waistline region, a rear waistline region, and a crotch region disposed between the front waistline region and the rear waistline region, and at least the inseam A disposable diaper having an absorbent core disposed in a region and a lattice squeezed portion disposed in a lattice pattern in the absorbent core, wherein the absorbent core in the crotch region extends in the front-rear direction and has the width It can be deformed by a pair of deformation guiding portions arranged at intervals in the direction, and at least a part of the lattice pressing portion is provided in a region sandwiched between the pair of deformation guiding portions.

It is the top view seen from the skin surface side of the disposable diaper which concerns on embodiment. It is the top view seen from the non-skin surface side of the disposable diaper which concerns on embodiment. It is a top view of the absorption core which concerns on embodiment. It is a schematic cross section along the AA cross section of the disposable diaper shown in FIG. It is a schematic cross section along the BB cross section of the disposable diaper shown in FIG. It is the figure which showed typically the mounting state in the AA cross section of a disposable diaper. It is the figure which showed typically the wearing state of the disposable diaper which concerns on embodiment.

(1) Outline of Embodiments At least the following matters will become apparent from the description of the present specification and the accompanying drawings.
The disposable diaper according to one aspect includes a front-rear direction and a width direction orthogonal to each other, a front waistline region, a rear waistline region, and a crotch region disposed between the front waistline region and the rear waistline region, and at least the inseam A disposable diaper having an absorbent core disposed in a region and a lattice squeezed portion disposed in a lattice pattern in the absorbent core, wherein the absorbent core in the crotch region extends in the front-rear direction and has the width It can be deformed by a pair of deformation guiding portions arranged at intervals in the direction, and at least a part of the lattice pressing portion is provided in a region sandwiched between the pair of deformation guiding portions.

  According to this aspect, the absorption core in the crotch region is deformed with the deformation guiding portion extending in the front-rear direction when worn as a base point. At this time, the region between the pair of deformation guide portions is increased in rigidity by the lattice pressing portion, and it is easy to maintain a planar state along the body. Therefore, it becomes easy to maintain the deformation state based on the deformation induction part and the planar state between the pair of deformation induction parts along the body, and it is possible to reduce a gap with respect to the body and suppress leakage. In addition, since the lattice squeezing portions are arranged in a lattice shape, a portion where the lattice squeezing portions are not formed is formed in the region between the pair of deformation guide portions. Compared to a configuration in which a planar squeezing portion is formed in the entire region between the pair of deformation guiding portions, it is easy to ensure the absorption performance of body fluid.

  According to a preferred aspect, the lattice squeezing portion may be provided in a region outside the width direction with respect to the deformation guiding portion.

  According to this aspect, the area | region of the width direction outside a deformation | transformation induction | guidance | derivation part turns into an area | region which hits a leg at the time of wear. The outer region in the width direction than the deformation guiding portion is increased in rigidity by the lattice pressing portion, easily follows the movement of the leg, and easily maintains the shape along the body.

  According to a preferred aspect, the lattice squeezing portion may be provided in a region on the front side of the pair of deformation guide portions and a region on the rear side of the pair of deformation guide portions.

  According to this aspect, the area | region before the deformation | transformation induction | guidance | derivation part and the area | region behind a deformation | transformation induction | guidance | derivation part become rigid by a lattice pressing part, and are easy to arrange | position so that a body may be covered. Moreover, the deformation | transformation by a deformation | transformation induction | guidance | derivation part is parted by a lattice pressing part, and it becomes difficult for a deformation | transformation to reach | attain the area | region ahead of a deformation | transformation induction part and the area | region behind a deformation | transformation induction part. It can suppress that the deformation | transformation base point by a deformation | transformation induction | guidance | derivation part is formed over the whole area of the front-back direction of an absorption core, suppress the clearance gap with respect to a buttocks and an abdominal part, and can suppress a leak.

  According to a preferred aspect, the lattice pressing portion includes a first lattice pressing portion extending in a first inclination direction inclined with respect to the front-rear direction and the width direction, and a second inclination direction intersecting the first inclination direction. And a second lattice squeezing part that is continuous with the first lattice squeezing part.

  According to this aspect, the 1st lattice pressing part inclines with respect to the width direction, and is easy to oppose the force with respect to the width direction. When sandwiched between the legs of the wearer, the region between the pair of deformation guiding portions can be easily maintained in a flat state, and the shape along the body can be further maintained. In addition, at least the first lattice squeezing part is inclined with respect to the front-rear direction, and it is easy to obtain an effect of dividing the deformation base point extending in the front-rear direction.

  According to a preferred aspect, the deformation guiding portion may have a shape that curves in a convex shape toward the inside in the width direction.

  According to this aspect, the area | region pinched by the convex vertex of the deformation | transformation induction | guidance | derivation part can be deform | transformed convexly to the body side with respect to a crotch, and the fitting property with respect to a crotch can be improved. In addition, the length in the width direction of the region sandwiched by the deformation guiding portion is increased from the convex vertex toward the front-rear direction, and the absorbent core is applied over a wide area to easily suppress the front leakage and the rear leakage. .

  According to a preferred aspect, the skin sheet is located on the skin surface side of the absorbent core, and the non-skin surface sheet is located on the non-skin surface side of the absorbent core, and the deformation guide portion is The skin sheet and the non-skin sheet may be joined to each other in at least a part of a region having a slit and overlapping with the slit.

  According to this aspect, since the skin sheet and the non-skin sheet are joined, it is easy to maintain the shape of the slit even after the body fluid is absorbed. Therefore, it is possible to maintain the deformation state with the deformation guide portion as a base point, suppress the gap with respect to the body, and continue the effect of suppressing leakage. Moreover, a low basic weight part (slit) has a basic weight lower than the surrounding area | region, can suppress thickness after absorbing a bodily fluid, and is easy to maintain the deformation | transformation state of an absorption core.

  According to a preferred aspect, in the region between the pair of deformation guiding portions, an auxiliary squeezing portion arranged in a shape different from the lattice squeezing portion in a plan view is formed, and the pair of deformations In the area between the guide parts, the area where the grid pressing part and the auxiliary pressing part overlap in the thickness direction, the area where the auxiliary pressing part is arranged, and the grid pressing part is not arranged, and An area where the grid pressing part is arranged and the auxiliary pressing part is not arranged may be provided.

  According to this aspect, the rigidity of the area | region between a pair of deformation | transformation induction | guidance | derivation parts can be improved more by the auxiliary squeezing part. In addition, the shape of the auxiliary rigid portion and the shape of the lattice compressed portion are different, the region where only the auxiliary compressed portion is disposed, the region where only the lattice compressed portion is disposed, and both the auxiliary compressed portion and the lattice compressed portion are disposed. An area is provided. The area where both the auxiliary squeezing part and the grid squeezing part are arranged is most squeezed within the area between the pair of deformation induction parts, and is likely to become a further deformation base point within the area between the pair of deformation induction parts. By forming a further deformation base point in the region between the pair of deformation guide portions, a plurality of deformation base points are formed in the absorbent core, and the body can be more fit.

  According to a preferred aspect, a decorative portion that is visible from the non-skin surface side of the disposable diaper is provided, and at least a part of the decorative portion is in the vicinity of the deformation guiding portion or an area that overlaps with the deformation guiding portion. In this case, it may extend in the front-rear direction.

  According to this aspect, the decoration part extended in the front-back direction is arrange | positioned to at least one part of the deformation | transformation base point by a deformation | transformation induction | guidance | derivation part. Therefore, the user who has visually recognized from the outside of the disposable diaper in a worn state can grasp the deformation based on the deformation guiding portion.

  According to a preferred aspect, the decorative portion may be disposed in the entire region in which the deformation guiding portion is disposed in the front-rear direction.

  According to this aspect, the user can grasp the deformation based on the deformation guiding portion over the entire area of the deformation guiding portion.

  According to a preferred aspect, an indicator extending in the front-rear direction is provided in a region between the pair of deformation guiding portions, a region where the indicator and the lattice pressing portion overlap, the indicator and the lattice pressing portion. And a region that does not overlap.

  According to this aspect, the area | region where an indicator and a lattice pressing part overlap has high drawing-in property of a bodily fluid by a lattice pressing part, and the color reaction of an indicator tends to arise. In the area where the indicator and the grid pressing part do not overlap, the grid pressing part has a low body fluid drawability, and the color reaction of the indicator hardly occurs. Therefore, when a small amount of body fluid is absorbed, the indicator reacts with color in the region where the indicator and the lattice compressed portion overlap, and when further body fluid is absorbed, the indicator does not overlap in the region where the indicator and the lattice compressed portion do not overlap. Reacts with color. It becomes easy to grasp the absorption mode of the body fluid by the indicator.

  According to a preferred aspect, the deformation guiding portion has a crotch stretchable portion that stretches in the front-rear direction, and a low basis weight portion that has a lower basis weight than the surroundings, and the low basis weight portion in the front-rear direction is A crotch stretchable part that expands and contracts in the front-rear direction may be disposed in at least a part of the disposed region.

  According to this aspect, the absorbent core can be deformed with the low basis weight part as the base point, and the region deformed with the low basis weight part as the base point can be pulled up by the crotch stretchable part.

  At least a part of the crotch stretchable part may be disposed in a region overlapping the low basis weight part in the thickness direction.

  According to this aspect, the region in which the low basis weight portion is provided has lower rigidity than the region in which the low basis weight portion is not provided, and the contraction force of the crotch stretchable portion is more easily expressed. By contraction of the crotch stretchable part, the low basis weight part can be easily lifted by the body side. Therefore, the absorbent core is easily deformed with the low basis weight portion as a convex vertex.

  According to a preferred aspect, the fastening tape includes an engaging portion that engages with the front waistline region, and a rear end edge of the crotch stretchable portion includes the center of the disposable diaper in the front-rear direction and the engaging portion. It may be arranged on the front side of the intermediate line in the front-rear direction with the front end edge.

  According to this aspect, the rear side of the middle line between the center in the front-rear direction of the disposable diaper and the front end edge of the engaging portion is a region on which the heel portion is placed at the time of wearing. The region on which the buttock is placed is not contracted by the crotch stretchable part and can be applied to the body in a flat state with respect to the body. Further, the rear end edge of the crotch stretchable part is located in front of the intermediate line and is disposed in a region where the wearer's buttocks cannot be placed. At the time of wearing, the area where the buttock is not placed is pulled forward while the area behind the intermediate line is pressed by the buttock, and the crotch stretchable part tends to expand. Therefore, the area | region where the crotch expansion-contraction part is arrange | positioned pulls up with respect to a body, can reduce the clearance gap with respect to a body, and can suppress a leak.

  According to a preferred aspect, the fastening tape includes an engaging portion that engages with the front waistline region, and a rear end edge of the crotch stretchable portion includes the center of the disposable diaper in the front-rear direction and the engaging portion. It may be arranged on the rear side of the intermediate line in the front-rear direction with respect to the front end edge.

  The rear end edge of the crotch stretchable part is located on the rear side of the intermediate line, and is disposed in a region where the wearer's buttocks are placed. At the time of wearing, the front end edge side of the crotch stretchable part is pulled forward while the rear end edge of the crotch stretchable part is pressed by the heel part, and the crotch stretchable part is easily extended. Therefore, the area | region where the crotch expansion-contraction part is arrange | positioned pulls up with respect to a body, and can accommodate an absorption core appropriately between a wearer's crotch.

(2) Overall schematic configuration of disposable diaper Hereinafter, a disposable diaper according to an embodiment will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like are different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

  The disposable diaper may be a tape-type disposable diaper or a pants-type disposable diaper. FIG. 1 is a plan view seen from the skin surface side of the disposable diaper 10 according to the present embodiment, and FIG. 2 is a plan view seen from the non-skin surface side of the disposable diaper 10 according to the present embodiment. Drawing 3 is a top view which looked at an absorption core concerning an embodiment from the skin side. The top view shown to FIGS. 1-3 has shown the disposable diaper of the expansion | extension state. FIG. 4 is a schematic cross-sectional view along the AA cross section of the disposable diaper shown in FIG. 1. FIG. 5 is a schematic cross-sectional view along the B-B cross section of the disposable diaper shown in FIG. 1. In addition, the expansion | extension state in this invention is the state which extended the disposable diaper 10 to the state in which a heel is not formed. Further, the natural state in the present invention means that in the disposable diaper 10 accommodated in the package, the disposable diaper 10 is taken out from the package, and the atmosphere is 20 ° C. ± 2 ° C. and the relative humidity is 60% ± 5% RH. It is in a state left for 24 hours.

  The disposable diaper 10 has a front-rear direction L and a width direction W that are orthogonal to each other. The front-rear direction L is defined by the direction extending to the front side of the body and the rear side of the body. In other words, the front-rear direction L is a direction extending in the front-rear direction in the deployed disposable diaper 10. Moreover, the disposable diaper 10 has the thickness direction T to which both the front-back direction L and the width direction W orthogonally cross. The thickness direction T extends to the skin surface side T1 toward the wearer side and the non-skin surface side T2 opposite to the skin surface side.

  The disposable diaper 10 has a front waistline region S1, a back waistline region S2, and a crotch region S3. The front waistline region S1 is a region facing the wearer's front waistline (abdomen). The back waistline region S2 is a region facing the back waistline (back) of the wearer, and includes a region on which the body (buttock) is placed when worn. The crotch region S3 is a region located between the front waistline region S1 and the back waistline region S2 that is located in the crotch of the wearer. The crotch region S3 is a region in which a leg opening is provided around the wearer's leg. The leg opening is a portion that is recessed inward in the width direction from the outer edge of the disposable diaper.

  The disposable diaper 10 includes an absorbent core 31 that includes an absorbent material. Absorbent core 31 includes an absorbent material such as ground pulp or superabsorbent polymer (SAP), or mixtures thereof. The absorbent core 31 may be covered with a core wrap 32. The absorbent core 30 may be configured by the absorbent core 31 and the core wrap 32. The core wrap 32 may be constituted by a tissue, and may be disposed on the skin surface side T1 of the absorbent core 31 and the non-skin surface side T2 of the absorbent core. Two core wraps 32 may be arranged on the skin surface side T1 of the absorbent core 31 and the non-skin surface side T2 of the absorbent core 31 or may be arranged so as to surround the absorbent core 31. May be.

  As shown in FIG.1 and FIG.4, the surface sheet 21 and the side sheet | seat 22 may be provided in the skin surface side T1 of the absorber 30 containing the absorption core 31. As shown in FIG. The top sheet 21 may be disposed across the center of the absorbent body 30 in the width direction W. The side sheet 22 may be disposed so as to cover the outer portion of the top sheet 21. The surface sheet 21 and the side sheet 22 may be configured by a liquid-permeable sheet such as a nonwoven fabric or a perforated plastic film. The inner side portion of the side seat 22 may be folded and overlapped. Between the overlapped side sheets 22, a leak-proof expansion / contraction part 43 that expands and contracts in the front-rear direction L may be provided. Leakproof expansion / contraction part 43 may be comprised with the rubber thread which expands-contracts in the front-back direction L. The side sheets 22 and the leak-proof stretchable part 43 constitute a leak-proof gather 60 that stands on the skin surface side T1 when worn.

  A back sheet 23 and an exterior sheet 24 may be provided on the non-skin surface side T <b> 2 of the absorber 30. The exterior sheet 24 may be provided on the non-skin side T2 of the back sheet 23. The length of the back sheet 23 in the width direction W is shorter than the length of the exterior sheet 24 in the width direction W, and the length of the back sheet 23 in the front-rear direction L is shorter than the length of the exterior sheet 24 in the front-rear direction L. The back sheet 23 may be configured by a liquid-impermeable film. The exterior sheet 24 may be composed of a liquid-permeable nonwoven fabric.

  The disposable diaper includes a skin sheet positioned on the skin surface side of the absorbent core 31 and a non-skin surface sheet positioned on the non-skin surface side of the absorbent core 31. The skin sheet includes a core wrap 32, a top sheet 21, and a side sheet 22 located on the skin surface side of the absorbent core. The non-skin surface sheet includes a core wrap 32, a back sheet 23, and an exterior sheet 24 positioned on the non-skin surface side of the absorbent core.

  A fastening tape 91 is provided on the outer side of the rear waistline region. The fastening tape 91 has a base portion 92 and an engaging portion 93. The base portion 92 is disposed between the exterior sheet 24 and the side sheet 22 in the thickness direction T, and extends outward from the exterior sheet 24 and the side sheet 22 in the width direction W. The engaging portion 93 is disposed on the base portion 92 and engages with the target portion 95. The target portions 95 are arranged at an interval in the width direction in the front waistline region S1, and are configured so that the fastening tapes 91 are respectively fastened.

  An indicator 51 may be disposed between the back sheet 23 and the absorber 30. The indicator 51 may extend in the front-rear direction L and be arranged at an interval in the width direction W. The indicator 51 is arrange | positioned between the low basic weight parts 33 mentioned later. The indicator 51 is configured to be discolored by the absorption of the body fluid by the absorber, so that the absorption state of the body fluid can be grasped from the non-skin surface side T2 of the disposable diaper 10.

  The disposable diaper 10 may have a leg-hole expansion / contraction part 42 that expands and contracts in the front-rear direction on the outer side in the width direction than the absorbent core 31. The leg extension / contraction part 42 may be provided between the side sheet 22 and the back sheet 23 and between the side sheet 22 and the exterior sheet 24. The leg-hole stretchable part 42 is configured by a belt-like stretchable sheet that stretches in the front-rear direction L. Due to the contraction of the leg elastic part 42, the leg opening of the disposable diaper 10 fits around the leg when worn.

  The disposable diaper 10 may have a waist elastic part 45 extending in the width direction W along the rear edge of the disposable diaper. The waist elastic part 45 may be provided between the back sheet 23 and the exterior sheet 24, between the top sheet 21 and the exterior sheet 24, and between the side sheet 22 and the exterior sheet 24. The rear end edge of the waistline stretchable part 45 may be located in front of the rear end edge of the disposable diaper, and the front end edge of the waistline stretchable part 45 may be located in front of the rear end edge of the absorbent core 31. The waist elastic part 45 may extend outside the absorbent core 31 in the width direction W. The waist elastic part 45 is constituted by a belt-like elastic sheet that expands and contracts in the width direction W.

  The disposable diaper 10 may have a pair of crotch elastic parts 41 provided in a region overlapping the absorbent core 31 in the crotch region. The crotch elastic part 41 is arranged on the non-skin surface side with respect to the absorbent core 31. The crotch elastic part 41 is configured to deform the absorbent core by contraction, and constitutes a “deformation induction part” of the present invention. The crotch elastic part 41 may be provided between the back sheet 23 and the exterior sheet 24. The crotch stretchable part 41 extends in the front-rear direction L and is disposed with an interval in the width direction W. The crotch stretchable portions 41 are not disposed at the center of the absorbent core 31 in the width direction W, but are disposed two on each side of the absorbent core 31 with respect to the center of the width direction W. Therefore, due to the contraction of the crotch stretchable part 41, the absorbent core in the region overlapping the crotch stretchable part 41 is pulled up to the body side from the center in the width direction of the absorbent core. The pair of crotch stretchable portions 41 may be located on the inner side in the width direction than the outer edge of the absorbent core 31. The region located between the pair of crotch stretchable parts 41 is pulled up to the body side with respect to the region outside in the width direction than the pair of crotch stretchable parts 41. Therefore, the center of the absorbent core in the width direction is deformed into a convex shape with the side portion as the base point, and the fit to the crotch of the body can be ensured. The crotch stretchable part 41 is made of rubber thread arranged along the front-rear direction L. In another form, the crotch elastic part 41 may be constituted by a belt-like elastic sheet that expands and contracts in the front-rear direction, may be constituted by one thread rubber, or may be constituted by three or more thread rubbers. It may be configured. In the present invention, the overlapping state is a state in which one member and the other member overlap in a plan view, and the other member is disposed on the skin surface side or the non-skin surface side of one member. It is in a state. In the overlapping state, not only the state where one member and the other member are in contact with each other, but also a configuration in which another member is interposed between the one member and the other member is included.

  The crotch elastic part 41 may straddle the center 10LC of the front-back direction of a disposable diaper. By contraction of the crotch elastic part 41, the center 10LC in the front-rear direction of the disposable diaper can be pulled up to the body side. In particular, when the disposable diaper is folded in two so that the skin side faces each other before use, the folded folds can be pulled up. In other forms, the crotch stretchable part 41 may not be disposed across the center 10LC in the front-rear direction of the disposable diaper, and may be disposed only on the front side of the center 10LC, or only on the rear side of the center 10LC. May be arranged.

  The crotch elastic part 41 is located inside the width direction W from the outer edge of the absorbent core 31. A region where the contraction force of the crotch stretchable part 41 is difficult to act is provided outside the crotch stretchable part 41 of the absorbent core 31 in the width direction W. 3 shows a side region R31 located outside the crotch stretchable part 41 in the absorbent core 31 and a central region R32 between the side regions R31. The side region R31 is a region located on the outer side in the width direction W than the crotch stretchable part 41 located on the outermost side in the width direction W. The central region R32 is a region obtained by combining a region overlapping the crotch stretchable portion 41 and a region located inside the crotch stretchable portion 41 in the width direction W. The central region R32 is pulled up to the body side with respect to the side region R31 by the contraction of the crotch stretchable part 41. The deformation | transformation aspect of the absorption core 31 at the time of wear is demonstrated in detail later.

  In addition, the expansion / contraction part including the leak-proof expansion / contraction part 43, the leg-hole expansion / contraction part 42, the waistline expansion / contraction part 45, and the crotch expansion / contraction part 41 in the present invention is in a state in which an elastic member such as a rubber thread or an elastic sheet can be expanded and contracted. It is a portion that is disposed, and does not include a portion where the elastic member is disposed in a state where it does not expand and contract. That is, the expansion / contraction part is an effective length part of the elastic member which comprises an expansion / contraction part.

  The disposable diaper 10 may have a decorative portion 81 that is visible from the non-skin surface side of the diaper. The non-skin surface of the diaper is a surface opposite to the surface directed to the wearer's skin when worn. “Visible” in the present invention means a distance of about 30 to 50 cm in a brightly lit room (standard: 500 to 750 lx (lux)) in daylight white (standard color temperature 4600 to 5400 K (Kelvin)). This means that a subject who has good visual acuity (1.0 or more) in both eyes can visually recognize the object. The decoration part 81 may be provided on the non-skin surface of the back sheet 23, may be provided on the skin surface of the exterior sheet 24, or may be provided on the non-skin surface of the absorber. The decorative portion 81 of the present embodiment is printed on the skin surface of the back sheet. The decorative portions 81 are arranged in pairs outside the indicator 51 in the width direction with an interval in the width direction. That is, the indicator 51 is provided in a region between the pair of decorative portions 81. The decorative portion 81 extends in the front-rear direction L. The decoration part 81 is provided in the vicinity of the deformation induction part or in a portion overlapping with the deformation induction part. Here, when the decoration part 81 is provided in the vicinity of the deformation induction part, the decoration part 81 and the deformation induction part are adjacent to each other in the plan view of the unfolded and extended diaper as shown in FIG. The separation distance between the guide portion and the decorative portion 81 is preferably 10 mm or less, particularly 5 mm or less.

(3) Configuration of Absorption Core Next, the configuration of the absorption core 31 will be described in detail with reference to FIG. The absorbent core 31 includes a narrow portion 35 that is shorter in the width direction than the maximum width 31M of the absorbent core 31, and a wide portion that is disposed outside the narrow portion 35 in the front-rear direction. The narrow portion 35 is disposed between the wide portions disposed at the front and rear. The length in the width direction of the narrow portion 35 is longer toward the outside in the front-rear direction L. The shape of the absorption core 31 in plan view is an hourglass shape. The shape of the absorbent body including the core wrap as well as the absorbent core 31 may be an hourglass shape.

  The absorbent core 31 may have a low basis weight portion 33 in which the basis weight of the absorbent material is lower than the surrounding area. The low basis weight portion 33 is provided along the front-rear direction L. The low basis weight part 33 should just extend in the front-back direction L, may be parallel with respect to the front-back direction L, and may incline at an angle of less than 90 degrees with respect to the front-back direction L.

  The low basis weight portion 33 is a portion where the basis weight of the absorbent material is lower than that of the surrounding absorbent core 31, and is thinner than the surrounding absorbent core 31 and has a low rigidity. Therefore, the low basic weight part 33 becomes a deformation | transformation base point of the absorption core 31 in a mounting state, and comprises the "deformation induction | guidance | derivation part" of this invention. The absorbent core 31 is easily formed with a deformation base point extending in the front-rear direction in a worn state. The deformation inducing portion may be configured so that the absorbent core can be deformed, and may be configured only by the above-described crotch stretchable portion 41, may be configured only by the low basis weight portion 33, or may be low You may be comprised by both the basic weight part 33 and the crotch elastic part 41. FIG. Note that the “deformation inducing portion” composed of the low basis weight portion 33 has a basis weight lower than that of the surrounding area, can suppress the thickness even after absorbing body fluid, and can maintain a deformed state. The “deformation inducing portion” composed of the crotch stretchable portion 41 can pull up the absorbent core to the body side due to the contraction of the crotch stretchable portion 41, and easily deforms the absorbent core in the crotch region to the body side. The “deformation inducing portion” composed of the inseam stretchable portion 41 and the low basis weight portion 33 has a portion whose basis weight is lower than that of the surrounding area is pulled up by the contraction of the inseam stretchable portion 41, so that a more convex deformation on the body side occurs. It becomes easy to realize.

  The low basis weight part 33 may be a slit (the basis weight in design is 0, but includes a portion mixed with the surrounding absorbent material) where the basis weight of the absorbent material is substantially zero. And the part by which the absorption material of less basic weight than the circumference | surroundings is arrange | positioned may be sufficient. The low basis weight portion 33 may be a slit having a certain length in the width direction W, or may be a cut having a length in the width direction W that is practically zero. The length in the width direction W of each low basis weight part 33 may be 2 mm or more and 10 mm or less, and the length in the front-rear direction L of the low basis weight part 33 may be 30 mm or more and 180 mm or less, more preferably. May be greater than or equal to the thickness of the absorbent core 31 and less than or equal to 8 mm. When the length in the width direction of the low basis weight portion 33 is equal to or greater than the thickness of the absorbent core 31, the absorbent core 31 is easily deformed in the thickness direction with the low basis weight portion 33 as a base point. Moreover, when the length in the width direction of the low basis weight portion 33 is 8 mm or less, anxiety about the absorption performance due to the long length in the width direction of the low basis weight portion can be suppressed.

  The low basis weight portions 33 are arranged in pairs in the width direction W with an interval therebetween. The low basic weight part 33 may be arrange | positioned at intervals in the width direction W on both sides of the center 10WC of the width direction of a disposable diaper. The center in the front-rear direction of the low basis weight portion 33 may be arranged on the rear side of the center 10LC in the front-rear direction of the disposable diaper.

  The absorbent core 31 may include a high-rigidity portion 70 that has higher rigidity than the surrounding area. The high-rigidity portion 70 includes a central high-rigidity portion 71 disposed between the pair of crotch stretchable portions 41, a rear high-rigidity portion 72 disposed on the rear side of the crotch stretchable portion 41, and the crotch stretchable portion 41. And a front high-rigidity portion 73 disposed on the front side. The central high-rigidity portion 71, the rear high-rigidity portion 72, and the front high-rigidity portion 73 are separated from each other in the front-rear direction L.

  The high-rigidity portion 70 is a region having higher bending rigidity than the surrounding region. The highly rigid portion 70 may be a portion having a higher basis weight than the surrounding region, or may be a portion in which the absorbent core 31 is compressed in the thickness direction. The highly rigid part 70 of this Embodiment is a part in which the pressing part by which the absorption core 31 was compressed was provided. The pressing part should just be formed by pressing at least the absorption core 31 in the thickness direction T, and may be formed by pressing other members, such as the core wrap 32, and the absorption core 31.

  The central high rigidity portion 71 is provided in a region between the pair of low basis weight portions 33. The front end edge of the central high-rigidity portion 71 may coincide with the front end edge of the low basis weight portion 33 or may be located on the rear side of the front end edge of the low basis weight portion 33. The rear end edge of the central high-rigidity part 71 may be located in front of the rear end edge of the low basis weight part 33. The center in the front-rear direction of the central high-rigidity part 71 may be disposed on the front side of the center in the front-rear direction of the low basis weight part 33. The central high-rigidity portion 71 may be arranged in the width direction W with a space from the low basis weight portion 33. The central high-rigidity portion 71 may straddle the center 10LC in the front-rear direction of the disposable diaper and the center 10WC in the width direction W of the disposable diaper.

  The crotch elastic part 41 may be located on both sides of the center in the width direction of the central high-rigidity part 71 and may extend to the rear side of the central high-rigidity part 71. The absorbent core 31 includes a first region R41 in which the crotch stretchable part 41 is disposed on the rear side of the central high-rigidity part 71, and the central high-rigidity part 71 and the crotch stretchable part 41 overlap in the thickness direction or the width direction. You may have 2 area | region R42 and 3rd area | region R43 by which the center highly rigid part 71 is arrange | positioned in the front side rather than the crotch expansion-contraction part 41. FIG. The first region R41 and the second region R42 are adjacent in the front-rear direction L, and the second region R42 and the third region R43 are adjacent in the front-rear direction L. The rear end edge of the first region R41 coincides with the rear end edge 41R of the crotch stretchable portion 41, and the front end edge of the first region R41 coincides with the rear end edge 71R of the central high-rigidity portion 71. The rear end edge of the second region R42 coincides with the front end edge of the first region R41, and the front end edge of the second region R42 coincides with the front end edge 41F of the crotch stretchable part 41. The rear end edge of the third region R43 coincides with the front end edge of the second region R42, and the front end edge of the third region R43 coincides with the front end edge 71F of the central high rigidity portion 71.

  The central high-rigidity portion 71 is a portion where a squeezing portion is formed, and is disposed between a pair of deformation guiding portions. The central high-rigidity portion 71 constitutes the auxiliary squeezing portion of the present invention. The shape of the central high-rigidity portion 71 in plan view is a rectangle, and is different from the shape of the lattice pressing portion 85 in plan view. At least a part of the central high-rigidity portion 71 overlaps with the lattice pressing portion 85.

  The rear high rigidity portion 72 may be disposed on the rear side of the low basis weight portion 33. The outer edge of the rear high rigidity portion 72 may extend outward in the width direction W toward the rear side. The length in the width direction W of the front end edge of the rear high rigidity portion 72 may be longer than the length of the central high rigidity portion 71 in the width direction W. The rear high rigidity portion 72 may straddle the center 10WC in the width direction W of the disposable diaper.

  The front high rigidity portion 73 may be disposed on the front side of the low basis weight portion 33. The front high rigidity part 73 may be arrange | positioned at intervals in the width direction W on both sides of the center 10WC of the width direction W of a disposable diaper. The front edge of the front high-rigidity portion 73 may extend forward toward the outside in the width direction W.

  As shown in FIG. 3, the absorbent core 31 has a lattice pressing unit 85 arranged in a lattice shape. The lattice squeezing unit 85 only needs to compress at least the absorbent core 31 in the thickness direction, the core wrap 32 may also be compressed, and the topsheet may also be compressed. The lattice pressing parts 85 are arranged in a lattice shape in plan view. The lattice compression unit intersects the first lattice compression unit 85A extending in the first inclination direction intersecting the front-rear direction and the width direction of the absorbent article, the first lattice compression unit 85A, and intersects the front-rear direction and the width direction. A second grid pressing portion 85B extending in the second tilt direction. The first grid pressing parts 85A and the second grid pressing parts 85B are formed alternately in the front-rear direction, and are alternately formed at intervals in the width direction. Therefore, a plurality of wavy linear pressing parts that are continuous in the front-rear direction are formed in the absorber. The length in the front-rear direction of the first lattice pressing unit 85A is longer than the length in the width direction of the first lattice pressing unit, and the length in the front-rear direction of the second lattice pressing unit 85B is the width of the second lattice pressing unit 85B. Longer than the direction length. Therefore, between the linear pressing parts adjacent in the width direction, the shape of the non-squeezing region surrounded by the grid pressing parts 85 has a dimension in the front-rear direction longer than the dimension in the width direction.

  The several linear pressing part is comprised by the combination of 85 A of 1st grid pressing parts, and the 2nd grid pressing part 85B. The plurality of linear compressed portions extend along the front-rear direction L, and are formed in a waveform that is curved or bent in the width direction. The phase of the waveform of the linear pressing parts adjacent to each other is shifted by 180 °. Thereby, the shape of the non-squeezing region surrounded by the lattice pressing part 85 is formed in a substantially rhombus shape.

  The lattice pressing part 85 may be formed in at least one of the skin surface side T1 and the non-skin surface side T2 of an absorption core. At least a part of the lattice pressing unit 85 may be provided in a region sandwiched between the pair of deformation guiding units. In more detail, the lattice pressing part 85 should just be provided in the area | region pinched | interposed by a pair of crotch expansion-contraction part 41 or the area | region pinched by a pair of low basic weight part 33 by planar view. Moreover, the lattice pressing part 85 may be formed in the whole surface of the absorption core by planar view.

  Here, the outer portion in the present invention is a portion that occupies a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is an outer edge in the width direction W. Further, the inner portion is a portion that occupies a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is an inner edge in the width direction W.

(4) Wearing state of disposable diaper Next, the wearing state of the disposable diaper 10 is demonstrated based on FIG.6 and FIG.7. Drawing 6 is a figure showing typically the wearing state in the AA section of a disposable diaper. Drawing 7 is a figure showing typically the wearing state of the disposable diaper concerning an embodiment, and is the figure which looked at the wearer of the sleeping state from the front side. A line BL shown in FIG. 6 indicates a line of the wearer's body.

  When the disposable diaper is worn, the absorbent core 31 in the crotch region S3 is subjected to a force toward the skin surface T1 and the inner side in the width direction W by being pulled up or being sandwiched between the legs of the wearer. The absorbent core 31 in the crotch region S3 is deformed with a deformation guiding portion extending in the front-rear direction L as a base point. More specifically, the absorbent core 31 is easily deformed so that the low basis weight portion 33 extending in the front-rear direction L when worn is a base point, and the low basis weight portion 33 is convex on the body side. Alternatively, the absorbent core 31 in the crotch region S3 is easily pulled up to the body side by the contraction of the crotch stretchable part 41. At this time, the region between the pair of deformation guiding portions is increased in rigidity by the lattice pressing unit 85, and it is easy to maintain a planar state along the body. Therefore, it becomes easy to maintain the deformation state based on the deformation induction part and the planar state between the pair of deformation induction parts along the body, and it is possible to reduce a gap with respect to the body and suppress leakage. In addition, since the lattice squeezing portions 85 are arranged in a lattice shape, a portion where the lattice squeezing portions 85 are not formed is formed in the region between the pair of deformation guiding portions. Compared to a configuration in which a planar squeezing portion is formed in the entire region between the pair of deformation guiding portions, it is easy to ensure the absorption performance of body fluid.

  The lattice pressing part 85 may be provided also in the area | region of the outer side of the width direction rather than a deformation | transformation induction | guidance | derivation part. In the present embodiment, the outer edge of the crotch elastic part 41 coincides with the outer edge of the low basis weight part 33. The lattice squeezing part is arranged on the outer side in the width direction than the outer edge of the crotch stretchable part 41 (the outer edge of the low basis weight part 33). An area outside the deformation guiding portion in the width direction is an area that hits the leg when worn. The outer region in the width direction than the deformation guide portion is increased in rigidity by the lattice squeezing portion 85, easily follows the movement of the legs, and easily maintains the shape along the body.

  The lattice squeezing portion 85 may be provided in a region on the front side of the pair of deformation guide portions and a region on the rear side of the pair of deformation guide portions. In the present embodiment, the crotch stretchable portion 41 is disposed on the inner side in the front-rear direction than the low basis weight portion 33. The lattice pressing unit 85 is also provided in a region on the front side of the low basis weight portion 33 and a region on the rear side of the low basis weight portion 33. The area on the front side of the deformation guiding part and the area on the rear side of the deformation guiding part have high rigidity due to the lattice squeezing part 85, and are easily disposed so as to cover the body.

  Moreover, the deformation | transformation by a deformation | transformation induction | guidance | derivation part is parted by the lattice pressing part 85, and it becomes difficult for a deformation | transformation to reach | attain the area | region before the deformation | transformation induction part and the area | region behind the deformation | transformation induction part. It can suppress that the deformation | transformation base point by a deformation | transformation induction | guidance | derivation part is formed over the whole area of the front-back direction of an absorption core, suppress the clearance gap with respect to a buttocks and an abdominal part, and can suppress a leak.

  The grid pressing unit 85 extends in a first grid pressing unit 85A extending in a first tilting direction tilted with respect to the front-rear direction and the width direction, and extends in a second tilting direction intersecting the first tilting direction, and the first grid pressing unit. And a second grid pressing part 85B. The 1st lattice pressing part inclines with respect to the width direction, and is easy to counter the force to the width direction. When sandwiched between the legs of the wearer, the region between the pair of deformation guiding portions can be easily maintained in a flat state, and the shape along the body can be further maintained. Further, at least the first lattice pressing portion 85A is inclined with respect to the front-rear direction, and it is easy to obtain an effect of dividing the deformation base point extending in the front-rear direction. More preferably, the second tilt direction is also preferably tilted with respect to the front-rear direction and the width direction. The region between the pair of deformation guiding portions can be easily maintained in a planar state, and the shape along the body can be further maintained.

  The deformation induction part has a slit, and the skin sheet and the non-skin sheet may be joined in at least a part of the region overlapping with the slit. In this Embodiment, the core wrap 32 as a skin surface sheet | seat and the core wrap 32 as a non-skin surface sheet | seat are joined. Since the skin sheet and the non-skin sheet are joined, it is easy to maintain the shape of the slit even after absorbing body fluid. Therefore, it is possible to maintain the deformation state with the deformation guide portion as a base point, suppress the gap with respect to the body, and continue the effect of suppressing leakage. Moreover, a low basic weight part (slit) has a basic weight lower than the surrounding area | region, can suppress thickness after absorbing a bodily fluid, and is easy to maintain the deformation | transformation state of an absorption core.

  As shown in FIG. 6, in the region between the pair of deformation induction portions, a region R51 in which the lattice pressing portion 85 and the central high-rigidity portion 71 overlap in the thickness direction, and the central high-rigidity portion 71 are arranged, and A region R52 where the lattice pressing unit 85 is not disposed and a region R53 where the lattice pressing unit 85 is disposed and the central high-rigidity portion 71 is not disposed may be provided. The rigidity of the region between the pair of deformation guide portions can be further increased by the auxiliary pressing portion.

  Further, the shape of the central high-rigidity portion 71 and the shape of the lattice pressing portion 85 are different, the region R52 where only the central high-rigidity portion 71 is arranged, the region R54 where only the lattice pressing portion 85 is arranged, the lattice pressing portion 85 and the center A region R53 in which both of the high-rigidity portions 71 are not disposed and a region R51 in which both the central high-rigidity portion 71 and the lattice pressing portion 85 are disposed are provided. The area where both the central high-rigidity part 71 and the lattice pressing part 85 are arranged is most compressed in the area between the pair of deformation induction parts, and becomes a further deformation base point in the area between the pair of deformation induction parts. easy. By forming a further deformation base point in the region between the pair of deformation guide portions, a plurality of deformation base points are formed in the absorbent core, and the body can be more fit.

  A decorative portion 81 extending in the front-rear direction is provided in the vicinity of the deformation induction portion or in a portion overlapping the deformation induction portion. The decorative portion 81 can make the portion deformed by the deformation guiding portion stand out. The user can grasp more that the absorbent core 31 is deformed so as to fit the body by visually recognizing the deformation mode by the deformation induction unit together with the decoration unit 81. The user can easily grasp through the decorative portion 81 that the absorbent core 31 is deformed in a convex shape toward the body in the wearing state, and obtains a sense of security that the diaper fits the body. Cheap.

  In addition, the crotch stretchable part 41 is disposed between the back sheet 23 and the exterior sheet 24, is close to the non-skin surface side of the diaper, and is easily visible from the non-skin surface side of the diaper. Moreover, the low basic weight part 33 is a part with a low fabric weight of an absorption core, and is easily visually recognized from the non-skin surface side of a diaper. That is, the deformation guide part is easily visible from the non-skin surface side of the diaper and is further easily visible by the decoration part 81. Even in a state before use, the user can easily see the deformation guiding portion and can obtain a sense of security that the diaper is fitted to the crotch portion.

  The decoration part 81 may be provided on the non-skin surface of the back sheet 23. The crotch stretchable part 41 and the decorative part 81 are arranged close to each other in the thickness direction T, and the crotch stretchable part 41 and the decorative part 81 can be shown integrally. The user can more easily understand that the absorbent core 31 is deformed in a convex shape toward the body side via the decorative portion 81, and can easily obtain a sense of security against leakage. Even in a state before use, the user can easily see the crotch stretchable part 41 via the decorative part 81, and can obtain a sense of security that the diaper fits the crotch part.

  The decorative portion 81 may be disposed in the entire region where the deformation guiding portion is disposed in the front-rear direction. That is, the decoration part 81 may be arranged on a straight line extending in the width direction from the deformation guide part. The front end edge of the decoration part 81 coincides with the front end edge of the deformation induction part or is located in front of the front end edge of the deformation induction part, and the rear end edge of the decoration part 81 coincides with or deforms the rear end edge of the deformation induction part. You may be located in the back rather than the rear-end edge of a guidance | induction part. In the present embodiment, the decorative portion 81 extends to the front side from the low basis weight portion 33 and extends to the rear side from the low basis weight portion 33. It becomes easier for the user to grasp the deformation based on the deformation guiding portion over the entire area of the deformation guiding portion.

  An indicator 51 extending in the front-rear direction is provided in a region between the pair of deformation guide portions, and a region where the indicator 51 and the lattice squeezing unit 85 overlap and a region where the indicator 51 and the lattice squeezing unit 85 do not overlap are provided. May be provided. In the region where the indicator 51 and the lattice squeezing unit 85 overlap, the lattice squeezing unit 85 has a high body fluid drawability, and the color reaction of the indicator 51 is likely to occur. In the area where the indicator 51 and the grid pressing part 85 do not overlap, the grid pressing part 85 has low body fluid drawability, and the color reaction of the indicator hardly occurs. Therefore, when a small amount of body fluid is absorbed, the indicator 51 undergoes a color reaction in a region where the indicator 51 and the lattice compression unit 85 overlap, and when further body fluid is absorbed, the indicator 51 and the lattice compression unit 85 overlap. The indicator reacts with color in the area that is not. It becomes easy to grasp the absorption mode of the body fluid by the indicator 51.

  The color difference ΔE between the indicator and the decorative portion 81 may be 3.0 or more. As a result of various studies by the applicant, it has been found that the user can easily recognize two areas as different areas when the color difference ΔE is generally 3.0 or more. The user can easily distinguish and recognize the indicator and the decorative portion 81. The user can easily grasp that the absorbent core 31 is deformed in a convex shape on the body side via the decorative portion 81, and can more easily obtain a sense of security against leakage. Even in a state before use, the user can easily see the deformation guiding portion via the decorative portion 81 and can feel assured that the diaper is fitted to the crotch portion.

Note that “color difference” is a CIE 1976 (L * a * b *) color space defined in JIS Z 8729 by measuring colors for two points (two areas) to be measured using a commercially available colorimeter. It can be obtained by comparing numerical values based on. Specifically, when the difference in L * value between two measurement points is ΔL *, the difference in a * is Δa *, and the difference in b * value is Δb *, the color difference ΔE = [(ΔL *) ² + (Δa *) ² + (Δb *) ² ] 1/2.

  The color of the indicator 51 and the color of the decoration part 81 are 24 color charts classified by the Ostwald hue ring, and the hue numbers may be shifted by 2 or more. The user can easily distinguish and recognize the indicator and the decorative portion 81. The user can easily grasp that the absorbent core 31 is deformed in a convex shape on the body side via the decorative portion 81, and can more easily obtain a sense of security against leakage. Even in a state before use, the user can easily see the deformation guiding portion via the decorative portion 81 and can feel assured that the diaper is fitted to the crotch portion.

  The deformation inducing portion may include a crotch stretchable portion 41 that stretches in the front-rear direction and a low basis weight portion 33 that has a lower basis weight than the surroundings. The crotch stretchable part 41 may be arranged in at least a part of the region where the low basis weight part 33 is arranged in the front-rear direction L. The absorbent core 31 can be deformed with the low basis weight portion 33 as a base point, and a region deformed with the low basis weight portion 33 as a base point can be pulled up by the crotch stretchable portion 41.

  As shown in FIG. 2, the disposable diaper has a region R <b> 11 in which the low basis weight portion 33 and the crotch stretchable portion 41 are arranged in the front-rear direction, and the low basis weight portion 33 is outside the crotch stretchable portion 41 in the front-rear direction L. And a region R12 extending in the region. The region where the low basis weight portion 33 and the crotch stretchable portion 41 are arranged in the front-rear direction is a region where the low basis weight portion 33 and the crotch stretchable portion 41 overlap in the width direction, and a deformation base point by the low basis weight portion 33 is formed. At the same time, the crotch elastic part 41 is pulled up to the body side by contraction. In the region R12 in which the low basis weight portion 33 extends outward in the front-rear direction from the crotch stretchable portion 41, the deformation base point by the low basis weight portion 33 is formed, but the shrinkage of the crotch stretchable portion 41 is difficult to act. Therefore, the deformation state of the absorption core 31 tends to be different between these two regions. Since the decorative portion 81 is provided so as to extend over the two regions, the user can easily grasp different deformation modes. Depending on the difference in the deformation mode of the absorbent core 31, the direction of the diaper in the front-rear direction and the position of the diaper in the front-rear direction can be grasped, and it is easy to grasp whether the diaper is properly worn on the body.

  At least a part of the crotch stretchable part 41 may be disposed in a region overlapping the low basis weight part 33. The region in which the low basis weight portion is provided has lower rigidity than the region in which the low basis weight portion is not provided, and the contraction force of the crotch stretchable portion is more easily expressed. Due to the contraction of the crotch stretchable part 41, the low basis weight part 33 can be easily lifted to the body side. Therefore, the absorbent core is easily deformed with the low basis weight portion 33 as a convex vertex.

  The rear end edge 41R of the crotch stretchable part 41 may be disposed on the front side of the middle line ML1 located in the middle of the front-rear direction L between the center 10LC in the front-rear direction L of the disposable diaper and the front end edge of the engaging part 93. As shown in FIG. 1, the intermediate line ML <b> 1 is a line that passes through the center in the front-rear direction L between the center 10 </ b> LC in the front-rear direction L of the disposable diaper and the front end edge of the engaging portion 93 and extends in the width direction W. The rear side of the intermediate line ML1 is generally an area on which the collar portion is placed at the time of mounting. The rear end edge of the crotch stretchable part 41 is located in front of the intermediate line ML1, and is disposed in a region where the wearer's buttocks are not placed. At the time of wearing, the region where the buttock is not placed is pulled forward while the region behind the intermediate line ML1 is pressed by the buttock, and the crotch stretchable portion 41 is easily extended. Therefore, the area | region where the crotch expansion-contraction part 41 is arrange | positioned pulls up with respect to a body, and the absorption core 31 can be suitably accommodated in a wearer's crotch.

  In the modification, the rear end edge 41R of the crotch stretchable part 41 may be located on the rear side of the intermediate line ML1. At the time of mounting, the front end edge 41F side of the crotch stretchable part 41 is pulled forward while the rear end edge 41R of the crotch stretchable part 41 is pressed by the buttocks, and the crotch stretchable part 41 is easy to extend. Therefore, the area | region where the crotch elastic part 41 is arrange | positioned pulls up with respect to a body, and can fit an absorption core appropriately between a wearer's crotch.

  In another modification, the deformation guiding portion may have a shape that curves in a convex shape toward the inside in the width direction. The area sandwiched between the convex vertices of the deformation guiding portion can be deformed in a convex shape toward the body with respect to the crotch, thereby improving the fit to the crotch. In addition, the length in the width direction of the region sandwiched by the deformation induction portion is increased from the convex vertex toward the side in the front-rear direction, and the absorbent core is applied over a wide area, making it easy to suppress front leakage and rear leakage. Become.

  The “basis weight of the absorbent core” in the present specification is measured by the following measurement method. When the disposable diaper 10 is sealed in a package or the like, a sample that is removed from the package and left in that state in an atmosphere of 20 ° C. ± 2 ° C. and relative humidity 60% ± 5% RH is used. In the disposable diaper packaged by a packaging sheet or the like, the packaging sheet is opened and the folded disposable diaper is developed. Subsequently, the part which measures basic weight is cut out from a disposable diaper, and parts other than an absorption core, such as a surface sheet, are removed from the cut-out part. And the area and weight of the part which measure the basic weight of an absorption core are measured. Basis weight is calculated based on weight and area.

  The “flexural rigidity” in the present specification may be a value measured by Gurley stiffness. The Gurley bending resistance can be measured in accordance with JIS-L1096 using a No. 311 Gurley type flexibility tester manufactured by Yasuda Seiki Seisakusho. The length of the Gurley stiffness measurement sample in the width direction W can be 30 mm, and the length in the front-rear direction can be 25 mm.

  As mentioned above, although this invention was demonstrated in detail using the above-mentioned embodiment, it is clear for those skilled in the art that this invention is not limited to embodiment described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims for utility model registration. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

  ADVANTAGE OF THE INVENTION According to this invention, the disposable diaper which can suppress the clearance gap with respect to a body and can suppress a leak by improving the fitting property with respect to a body can be provided.

DESCRIPTION OF SYMBOLS 10 Disposable diaper 10LC: Center of diaper front-rear direction 10WC: Center of diaper width direction 21 Top sheet 22 Side sheet 23 Back sheet 24 Exterior sheet 30 Absorber 31 Absorption core 32 Core wrap 33 Low basis weight part 35 Narrow part 41 Inseam Stretchable part 42 Leg stretchable part 43 Leakproof stretchable part 45 Waistline stretchable part 51 Indicator 71 Central high-rigidity part 72 Rear high-rigidity part 73 Front high-rigidity part 85 Lattice pressing part 91 Fastening tape 92 Base part 93 Engaging part 95 Target Part ML1: Intermediate line L Front-rear direction W Width direction T Thickness direction T1 Skin side T2 Non-skin side S1 Front waistline area S2 Rear waistline area S3 Inseam area

Claims (14)

The front-rear direction and the width direction orthogonal to each other;
A crotch region disposed between a front waistline region, a back waistline region, and the front waistline region and the back waistline region;
An absorbent core disposed at least in the crotch region;
A disposable diaper having a grid pressing portion arranged in a grid pattern in the absorbent core,
The absorbent core in the crotch region is deformable by a pair of deformation guiding portions that extend in the front-rear direction and are spaced apart in the width direction,
A disposable diaper in which at least a part of the lattice pressing part is provided in a region sandwiched between the pair of deformation guiding parts.   The disposable diaper according to claim 1, wherein the lattice squeezing part is also provided in a region outside the width direction with respect to the deformation guiding part.   The disposable diaper according to claim 1 or 2, wherein the lattice squeezing portion is also provided in a region on the front side of the pair of deformation guide portions and a region on the rear side of the pair of deformation guide portions.   The lattice pressing portion extends in a first inclination direction that is inclined with respect to the front-rear direction and the width direction, extends in a second inclination direction that intersects the first inclination direction, and the first. The disposable diaper according to any one of claims 1 to 3, further comprising: a second lattice pressing portion that is continuous with the lattice pressing portion.   The disposable diaper according to any one of claims 1 to 4, wherein the deformation guide part has a shape that curves in a convex shape toward the inside in the width direction. A skin sheet positioned on the skin surface side of the absorbent core, and a non-skin sheet positioned on the non-skin surface side of the absorbent core,
The deformation induction part has a slit,
The disposable diaper according to any one of claims 1 to 5, wherein the skin sheet and the non-skin sheet are joined in at least a part of a region overlapping with the slit. In the region between the pair of deformation guide portions, an auxiliary squeezing portion arranged in a shape different from the lattice squeezing portion is formed in plan view,
In the region between the pair of deformation guide portions,
The area where the lattice pressing part and the auxiliary pressing part overlap in the thickness direction,
The area where the auxiliary pressing part is arranged and the lattice pressing part is not arranged,
The disposable diaper according to any one of claims 1 to 6, wherein an area where the lattice pressing part is arranged and the auxiliary pressing part is not arranged is provided. A decorative part visible from the non-skin surface side of the disposable diaper is provided,
The disposable diaper according to any one of claims 1 to 7, wherein at least a part of the decorative portion extends in the front-rear direction in the vicinity of the deformation guiding portion or in a region overlapping with the deformation guiding portion.   The disposable diaper according to claim 8, wherein the decorative portion is disposed in the entire region in which the deformation guiding portion is disposed in the front-rear direction. In the region between the pair of deformation guide portions, an indicator extending in the front-rear direction is provided,
The disposable diaper according to any one of claims 1 to 9, wherein a region where the indicator and the lattice pressing portion overlap and a region where the indicator and the lattice pressing portion do not overlap are provided. The deformation induction portion has a crotch stretchable portion that stretches in the front-rear direction, and a low basis weight portion that has a lower basis weight than the surroundings,
The inseam stretchable part which expands-contracts in the front-back direction is arrange | positioned in at least one part of the area | region where the said low basic weight part is arrange | positioned in the said front-back direction. Disposable diapers.   The disposable diaper according to claim 11, wherein at least a part of the crotch stretchable part is disposed in a region overlapping with the low basis weight part in a thickness direction. The fastening tape has an engaging portion that engages with the front waistline region,
The rear end edge of the crotch stretchable part is disposed on the front side of the middle line in the front-rear direction between the center of the disposable diaper in the front-rear direction and the front end edge of the engagement part. The disposable diaper according to 12. The fastening tape has an engaging portion that engages with the front waistline region,
The rear end edge of the crotch stretchable part is disposed rearward of the front-rear direction intermediate line between the center of the disposable diaper in the front-rear direction and the front end edge of the engagement part. Item 13. A disposable diaper according to item 12.

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