TWI648040B - Absorbent article - Google Patents

Abstract

A pair of ventral flaps (10) are fixed to both side edges (5S) of the absorbent body (5) in the abdominal side portion (1F). The absorbent core (40) has a relatively wide (40W) length in the transverse direction (Y) in the longitudinal direction X, a relatively narrow portion (40N) of relatively short length, and a middle width therebetween In the portion (40M), the side edge portions (40MS) of the intermediate width portion (40M) are inclined in plan view. The ventral flap fixing point (11α) is located on or near the imaginary straight line (VL) and is located further inside the longitudinal direction X than the imaginary straight line (VL). The side edge portion (40MS) of the intermediate width portion (40M) is located in the vicinity of the imaginary straight line (VL) and is inclined along the imaginary straight line (VL). The ventral longitudinal end (53F) of the elastic member (53) for forming the leg gather is located in the vicinity of the imaginary straight line (VL).

Description

Absorbent article

The present invention relates to an absorbent article such as a disposable diaper, and more particularly to an unfolded absorbent article including a fixing member.

Typical examples of the absorbent article include a front side portion disposed on the ventral side of the wearer, a back side portion disposed on the back side, and a lower portion located between the lower side and the lower portion, and containing a liquid permeable front sheet. A material, a liquid impervious back sheet, and an absorbent core disposed between the two sheets. Further, as a disposable diaper which is one type of absorbent article, an unfolded disposable diaper is known which is attached to both side edges of the back side portion of the absorbent body including the absorbent core. A side panel that is stretchable in the lateral direction is attached so as to extend laterally outward from the side edge portion, and the fastening tape for fixing the diaper is attached to the front end portion of the side panel in the extending direction. (for example, Patent Documents 1 and 2).

In the unfolded disposable diaper according to Patent Documents 1 and 2, a sheet material is attached to both side edges of the abdominal side portion of the absorbent body so as to extend laterally outward from the side edge portion. A pair of ventral flaps. The ventral flap is used when the diaper is worn. That is, when an unfolded disposable diaper having a pair of ventral flaps is attached to both side edges of the ventral side, typically one of the pair of ventral flaps is grasped with one hand, and The other hand grips the back side of the diaper, and the diaper is disposed at a position lower than the crotch portion of the wearer, and the grasped portion is pulled from the state to the crotch portion, and the pull is pulled. The corresponding part of the diaper is closely attached to the wearer's waist or the crotch portion of the crotch The adhesive strip of the back side is elongated toward the ventral side of the wearer and fixed to the fixed area on the outer surface of the abdominal side.

[Previous Technical Literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open Publication No. 2014-90902

Patent Document 2: Japanese Patent Laid-Open Publication No. 2014-144050

The present invention relates to an absorbent article having a longitudinal direction extending from the ventral side of the wearer to the back side via the crotch portion and a transverse direction orthogonal thereto, and having a lower portion in the longitudinal direction, which is disposed in the crotch when worn. a ventral side disposed at a ventral side of the wearer than the lower portion; and a dorsal portion disposed on a back side of the wearer than the crotch portion; the absorbent article comprising an absorbent body The absorbent body includes an absorbent core and has a rectangular shape that is long in the longitudinal direction in a plan view, and a pair of fixing members are fixed to both sides of the longitudinal direction of the absorbent body in the back side portion. A pair of ventral flaps are fixed to both side edges of the absorbent body in the longitudinal direction in the longitudinal side so as to extend laterally outward from the both side edges. The absorptive body has a pair of side wing portions, and the pair of side wing portions extend from the front side portion to the back side portion from the side edges of the absorbent core body in the longitudinal direction, respectively. Each of the side flap portions is provided with an elastic member for forming a leg gather in an extended state so as to extend in the longitudinal direction through the crotch portion. The absorbent core has a wide portion having a relatively long lateral length, a narrow portion having a relatively short lateral length, and an intermediate width portion between the wide portion and the narrow portion in the longitudinal direction, the wide width At least a portion of the portion is located at the front side portion, and at least a portion of the narrow portion is located at the lower portion of the crotch, and both side edges of the intermediate width portion are inclined when viewed from above. Each of the pair of the ventral flaps has a convex portion which protrudes laterally outward from a portion of the extending portion of the side edge portion of the absorbent body along the longitudinal direction. When the absorbent body is expanded in a planar shape to be in an expanded state, the abdominal flap is used The portion located in the longitudinally innermost portion and the laterally outermost portion of the fixed portion of the absorbent body is a ventral fin fixing point, and an imaginary straight line passing through the center point of the absorbent body and the center point of the convex portion is drawn. In the case, all of the following (1) to (3) are satisfied.

(1) The ventral flap fixing point is located on the imaginary straight line or in the vicinity of the imaginary straight line and is located longitudinally inward of the imaginary straight line.

(2) The side edge portion of the intermediate width portion is located in the vicinity of the imaginary straight line and is inclined along the imaginary straight line.

(3) The ventral longitudinal end of the elastic member for forming a leg gather is located in the vicinity of the imaginary straight line.

1‧‧‧Disposable diapers

1F‧‧‧ ventral side

1M‧‧‧胯 lower part

1R‧‧‧ Back side

2‧‧‧Front sheet

3‧‧‧Back sheet

4‧‧‧Acceptor

5‧‧‧Absorbing ontology

5CP‧‧‧ Center Point

5F‧‧‧ Ventral longitudinal end

5S‧‧‧lateral edge

6‧‧‧ side film

7‧‧‧Buckle belt

8‧‧‧Fixed components

9‧‧‧Fixed area

10‧‧‧ Ventral flaps

11‧‧‧ Fixed Department

11α‧‧‧ Ventral flap fixation point

12‧‧‧ convex

12CP‧‧‧ Center Point

13‧‧‧High rigidity area

14‧‧‧Low rigid area

40‧‧‧Absorbable core

40F‧‧‧ Ventral longitudinal end

40M‧‧‧Intermediate width

40MS‧‧‧lateral edge

40N‧‧‧Narrow section

40NS‧‧‧lateral edge

40R‧‧‧back side longitudinal end

40W‧‧‧ wide section

41‧‧‧ Skin side pack core material

42‧‧‧Non-skin side pack chip

50‧‧‧Flanking

51‧‧‧Side sheet

52‧‧‧Elastic members for forming three-dimensional pleats

53‧‧‧Elastic members for the formation of leg folds

53F‧‧‧ Ventral longitudinal end

61‧‧‧Sheet

62‧‧‧Flexible components

71‧‧‧With substrate

72‧‧‧ Fixed Department

CLx‧‧‧ vertical centerline

CLy‧‧‧ horizontal centerline

VL‧‧‧imaginary straight line

W1‧‧‧ horizontal length

W2‧‧‧ horizontal length

X‧‧‧ portrait

Y‧‧‧ horizontal

Z‧‧‧

1 is a front sheet side in which an elastic member of each portion of an absorbent main body of a disposable diaper according to an embodiment of the absorbent article of the present invention is stretched to expand the disposable diaper into a flat shape, that is, Top view of the opposite side of the skin.

Fig. 2 is a schematic transverse cross-sectional view taken along line I-I of Fig. 1 (placement of the ventral flap of the ventral side).

Figure 3 is a schematic cross-sectional view taken along line II-II of Figure 1 (bottom portion).

Fig. 4 is a schematic transverse cross-sectional view taken along line III-III of Fig. 1 (arrangement portion of the fixing member of the back side portion).

Figure 5 is a schematic plan view of the absorbent core in the diaper shown in Figure 1.

Fig. 6 is a plan view showing a portion of Fig. 1 enlarged, and is a schematic plan view showing a ventral side portion of the diaper shown in Fig. 1 and its vicinity.

Fig. 7 is an explanatory view of the "fixed portion of the abdominal flap and the absorbent body" of the present invention.

Fig. 8 is a plan view schematically showing a ventral flap in the diaper outside the scope of the present invention and its vicinity, and Fig. 8(a) shows a natural state before the ventral flap is stretched in the direction indicated by the arrow, Fig. 8 (b) shows a state in which the abdominal flap is stretched in the direction indicated by the arrow.

As described above, the ventral flap attached to the ventral side of the unfolded disposable diaper functions as a grip portion when the diaper is worn, and is very convenient, but there is a method of using the portion of the ventral flap to be grasped, etc., resulting in The diaper is wrinkled or the diaper does not conform to the wearer's body to create a gap or the absorbent body produces wrinkles. Further, when the diaper is worn on the body in such a poor state, the diaper does not adhere to the body, and therefore excretion such as urine leaks to the outside.

Accordingly, the present invention is directed to an absorbent article which can provide a high leakage preventing effect by adhering to the crotch portion of a wearer by a simple wearing operation without trimming in a worn state.

Hereinafter, the absorbent article of the present invention will be described with reference to the drawings based on a disposable diaper as a preferred embodiment. As shown in Fig. 1, the disposable diaper 1 of the present embodiment has a longitudinal direction X extending from the ventral side of the wearer to the back side via the crotch portion and a transverse direction Y orthogonal thereto, and has a lower portion 1M in the longitudinal direction X, It is disposed at the crotch portion when worn; the ventral portion 1F is disposed on the ventral side of the wearer lower portion 1M; and the back side portion 1R is disposed on the back side of the wearer than the crotch portion 1M . The crotch portion 1M includes an excretory portion opposing portion (not shown) that is disposed opposite to the excretory portion of the wearer such as the penis. The opposing portion of the excretory portion is usually located slightly closer to the center of the longitudinal direction X of the diaper 1 than to the position of the ventral portion 1F. The front side portion 1F, the crotch portion 1M, and the back side portion 1R correspond to respective regions when the diaper 1 (absorbent body 5) is roughly divided into three equal parts in the longitudinal direction X.

The diaper 1 is a so-called unfolded type disposable diaper, and comprises: an absorbent body 5 comprising a liquid permeable front sheet 2, a liquid impervious or water repellent back sheet 3, and a medium a liquid-retaining absorbent body 4 between the sheets 2 and 3; a pair of fixing members 8, 8 which are fixed to the side edges 5S of the absorbent body 5 in the back side portion 1R along the longitudinal direction X, 5S; and a pair of ventral flaps 10, 10, which are fixed to both side edges 5S, 5S of the absorbent body 5 in the ventral portion 1F. The diaper 1 divides the absorbent body 5 two points in the lateral direction Y and It is formed symmetrically with respect to one longitudinal center line CLx extending in the longitudinal direction X as a reference. As shown in FIG. 1, the absorbent body 5 has a rectangular shape which is long in the longitudinal direction X in plan view. The fixing member 8 and the abdominal flap 10 are respectively fixed to the absorbent body 5 so as to extend outward from the side edge portion 5S of the absorbent body 5 toward the outside of the lateral direction Y.

Each of the front sheet 2 and the back sheet 3 has a size larger than that of the absorber 4, and extends outward from the periphery of the absorber 4, and the extension portions thereof are known by an adhesive, a heat seal, an ultrasonic seal, and the like. The joining methods are joined to each other. As the front sheet 2 and the back sheet 3, various sheets previously used for such an absorbent article can be used without any particular limitation. For example, as the topsheet 2, various nonwoven fabrics or apertured films can be used, and as the backsheet 3, a resin film, a laminate of a resin film and a nonwoven fabric, or the like can be used. The back sheet 3 is, for example, in the form of a film sheet having a liquid impermeability, and a form in which an exterior sheet is disposed on the non-skin facing surface of the film sheet, that is, on the outer surface side. The material is, for example, a non-woven fabric.

The absorbent body 4 includes a liquid-retaining absorbent core 40, a skin-side wrapping core material 41 covering the skin facing surface of the absorbent core 40, and a non-skin opposing surface covering the absorbent core 40. The skin side is composed of a core material 42. The absorbent core 40 is formed by stacking fibers of a core forming material containing an absorbent material and having a single layer structure. As the absorbent material, a material which is usually used as a material for forming such an absorbent core can be used, and examples thereof include hydrophilic fibers such as wood pulp and synthetic fiber treated with a hydrophilizing agent, or water-absorbent polymerization. Particles. That is, the absorptive core 40 may be a fiber deposit of a hydrophilic fiber or a water-absorbent polymer particle carried on the fiber deposit. As the clad core materials 41 and 42, for example, paper, non-woven fabric, or the like can be used.

As shown in Fig. 1, the absorbent core 40 has an hourglass shape in which a central portion of the longitudinal direction X is narrowed inward in a plan view, and has a shape elongated in the longitudinal direction X. The absorbent core 40 has a ventral longitudinal end 40F at the ventral side 1F and a dorsal longitudinal end 40R at the dorsal portion 1R and a full length X of the iliac crest 1M.

An absorbent core 40 is shown in FIG. As shown in FIGS. 1 and 5, the absorbent core 40 has a wide portion 40W having a relatively long length in the lateral direction X, a narrow portion 40N having a relatively short length in the lateral direction Y, and a wide portion in the longitudinal direction X. An intermediate width portion 40M between 40W and the narrow portion 40N. Further, the "length of the lateral direction Y" (that is, the width) as the element for distinguishing the respective portions is set to the maximum width when the width is changed in the longitudinal direction X without being fixed. In the illustrated embodiment, the wide portion 40W is fixed in width over the entire length of the longitudinal direction X. In contrast, the widths of the narrow portion 40N and the intermediate width portion 40M are respectively changed in the longitudinal direction X, and both sides of the narrow portion 40N The edge portions 40MS and 40MS of the edge portions 40NS and 40NS and the intermediate width portion 40M are inclined as viewed in plan view as shown in FIGS. 1 and 5, that is, in a direction intersecting both the longitudinal direction X and the lateral direction Y. Further, at least a part of the wide portion 40W is located at the front side portion 1F, and at least a part of the narrow width portion 40N is located at the lower portion 1M. The intermediate width portion 40M is located at one of the abdominal portion 1F and the lower portion 1M, or is located at both positions.

As shown in FIGS. 2 to 4, the skin side wrapping core material 41 has substantially the same size as the skin facing surface of the absorbent core 40, whereas the length of the lateral direction Y of the non-skin side wrapping core material 42 (ie, The width is greater than the non-skin contrast surface of the absorbent core 40. The non-skin side wrapping core material 42 having a wide width covers the entire non-skin opposing surface of the absorbent core 40, and the self-absorbing core 40 is laterally extended to the lateral direction Y along both side edges of the longitudinal direction X. The extension portion is wound up on the skin side wrapping core material 41 facing the skin opposite to the skin of the absorbent core 40, and the side edges of the skin side wrapping core material 41 along the longitudinal direction X are covered. unit.

In the present specification, the "skin facing surface" is an absorbent article or a constituent member thereof (for example, the absorbent body 5) which faces the skin side of the wearer when wearing the absorbent article, that is, relatively close to the wearer. On the side of the skin of the person, the "non-skin facing surface" is the side of the absorbent article or its constituent member on the side opposite to the skin side when the absorbent article is worn, that is, the side facing the farther side of the wearer's skin. . Further, in the present specification, "when worn" means maintaining a normally accurate wearing position, that is, a state of an accurate wearing position of the absorbent article, and does not include a state in which the absorbent article is in a state of being displaced from the wearing position. .

As shown in FIGS. 1 to 4, the side sheets 51 are disposed on the left and right sides of the longitudinal direction X on the side of the front sheet 2 of the absorbent body 5. The side sheet 51 has an inner edge portion along the longitudinal direction X, and is located on the outer side of the lateral direction Y from the inner edge portion and the outer edge portion along the longitudinal direction X, as shown in FIG. The inner edge portion of the material 51 overlaps with the absorber 4, and the outer edge portion of the side sheet 51 extends from the side edge of the absorber 4 along the longitudinal direction X toward the outer side of the lateral direction Y, and is joined to the back sheet 3. At the inner edge portion of the side sheet 51, the linear three-dimensional pleat forming elastic member 52 is fixed in an extended state along the longitudinal direction X, whereby when the diaper 1 is worn, the contraction of the elastic member 52 is at least at the lower portion of the crotch 1M forms a three-dimensional fold.

As shown in Fig. 1, the absorbent body 5 has a pair of side flap portions 50, 50 which are respectively self-absorbent body 4 (absorbent core 40) from the front side portion 1F to the back side portion 1R. It extends along the side edges of the longitudinal direction X toward the outer side of the lateral direction Y. As shown in FIG. 2 to FIG. 4, the side flap portion 50 is laterally oriented by the side edge of the self-absorbing body 4 along the longitudinal direction X in each of the front sheet 2, the back sheet 3, and the side sheet 51. The outer portion is formed to be extended, and each of the sheets 2, 3, and 51 is joined to each other by a known joining method such as an adhesive, heat sealing, or ultrasonic sealing. The side edges 5S, 5S of the absorbent body 5 along the longitudinal direction X include the side flaps 50.

As shown in FIG. 1 and FIG. 3, the linear leg gathers forming elastic members 53 are disposed in an extended state in the pair of side flap portions 50 and 50 so as to extend in the longitudinal direction X through the crotch portion 1M. The side flap portion 50 in the lower portion 1M functions as a portion that functions as a so-called leg portion disposed around the leg of the wearer when the diaper 1 is worn. With this configuration, the elastic member is worn by the leg portion when the diaper 1 is worn. The contraction of 53 forms a pair of leg folds.

As shown in FIG. 1 and FIG. 4, each of the pair of fixing members 8 and 8 is fixed to the side of the elastic body 5 so as to extend outward from the side edge portion 5S of the self-absorbent body 5 toward the outer side of the lateral direction Y. The sheet 6 is fixed to the fastening tape 7 of the side panel 6 so that the end portion 6S extends outward from the lateral direction Y from the extending direction of the side panel 6. The fixing member 8 (the side panel 6, the fastening tape 7) and the absorbent body 5 are different members.

As shown in FIGS. 1 and 4, the side panel 6 includes two sheets of a quadrangular shape in plan view. 61, 61, and a plurality of elastic members 62 which are fixed in an extended state and extend in the lateral direction Y between the two sheets 61, 61. The plurality of elastic members 62 are disposed at a central portion of the lateral direction Y of the side sheets 6 at a predetermined interval in the longitudinal direction X. The arrangement portion of the elastic member 62 in the side panel 6 (the central portion of the lateral direction Y) is an elastically stretchable portion which is expandable and contractible in the lateral direction Y which is the direction in which the elastic member 62 is elongated, and the side panel 6 is in the lateral direction Y by the expansion and contraction portion. Flexible. The side edges of the side sheets 6 which are relatively close to the longitudinal center line CLx along the side edges of the longitudinal direction X are fixed to the side edge portion 5S of the absorbent body 5 by a known joining means such as an adhesive (the side flap portion) 50) between the side sheet 51 and the back sheet 3, forming a fixing portion of the side panel 6 with the absorbent body 5, relatively far from the longitudinal center line CLx, and the side edge portion, that is, the leading end portion 6S in the extending direction The side is located on the outer side of the lateral edge Y of the side edge portion 5S of the absorbent body 5.

As shown in FIGS. 1 and 4, the fastening tape 7 is composed of a tape substrate 71 and a fixing portion 72. As shown in Fig. 1, the tape substrate 71 has a shape elongated in the lateral direction Y in plan view, and one end side in the longitudinal direction (lateral direction Y) is fixed to the front end portion 6S by a known joining means such as an adhesive. The skin is opposite to the skin, and the fixing portion of the fastening tape 7 and the side panel 6 is formed. A fixing portion 72 is fixed to the inner surface (the skin facing surface) of the portion of the tape substrate 71 from the side portion 6S before the side sheet 6 extending in the lateral direction Y. The fixing portion 72 is constituted by a male member of a mechanical face fastening member, and is detachably fixed to a fixed region 9 composed of a female member of a mechanical face fastening member described below.

As the sheet 61 constituting the side sheet 6, for example, non-woven fabric, woven fabric, knitted fabric, paper, resin film, etc. by various methods such as hot air non-woven fabric, hot-rolled non-woven fabric, spunlace nonwoven fabric, spunbonded nonwoven fabric, and melt-blown nonwoven fabric can be used. And a sheet obtained by integrating these two or more laminate layers. Further, as the tape base material 71 constituting the fastening tape 7, for example, a non-woven fabric or a laminate of a non-woven fabric and a resin film can be used.

As shown in Fig. 1, a non-skin opposing surface of the absorbent body 5 in the front side portion 1F is formed with a fixed region 9 composed of a female member of a mechanical face fastening member. In the fixed region 9, the female member of the mechanical face fastening member is fixed to the non-skin facing surface of the back sheet 3 forming the non-skin opposing surface of the absorbent body 5 by a known joining means such as an adhesive. Surface) Formed, the fixing portion 72 of the fastening tape 7 composed of the male member of the mechanical face fastening member is detachably fixed.

As shown in Fig. 1 and Fig. 2, the inner edge portions of the pair of front side flaps 10 and 10 which are relatively close to the longitudinal center line CLx in the side edges of the longitudinal direction X are respectively known by an adhesive or the like. The method is fixed between the side sheet 51 and the back sheet 3 in the side edge portion 5S (the side flap portion 50) of the absorbent body 5, and forms a fixing portion 11 of the abdominal flap 10 with the absorbent body 5. The longitudinal center line CLx is relatively far apart, and the side edge portion side extends from the side edge portion 5S of the absorbent body 5 to the outer side of the lateral direction Y. Further, each of the pair of front side flaps 10, 10 has a convex portion 12 which protrudes from a part of the side edge of the longitudinal direction X in the extending portion of the side edge portion 5S toward the outer side of the lateral direction Y. . As shown in FIG. 1, the convex portion 12 has an isosceles trapezoidal shape in plan view, and the length of the lateral direction Y, that is, the width gradually decreases toward the outer side of the lateral direction Y. The abdominal flap 10 is composed of a sheet such as a non-woven fabric that can be used as the sheet 61 constituting the side panel 6, but unlike the side panel 6, it is not stretchable and is non-stretchable.

In Fig. 6, the abdominal portion 1F which is the main portion of the diaper 1 is enlarged and displayed. One of the main features of the diaper 1 having the above-described configuration is the case where the absorbent body 5 is expanded into a flat shape as shown in FIG. When the center point 5CP of the main body 5 and the imaginary straight line VL of the center point 12CP of the convex portion 12 satisfy all of the following (1) to (3). In the following description, one side half (the right half in FIG. 6) based on the vertical center line CLx will be described. Unless otherwise specified, the one side half side is also applied to the other one side half.

(1) The ventral flap fixing point 11α is located on the imaginary straight line VL or near the imaginary straight line VL and is located further inside the longitudinal direction X than the imaginary straight line VL (that is, near the lateral center line CLy).

(2) The side edge portion 40MS of the intermediate width portion 40M of the absorbent core 40 is located in the vicinity of the imaginary straight line VL and is inclined along the imaginary straight line VL.

(3) The ventral longitudinal end 53F of the leg gather forming elastic member 53 is located in the vicinity of the imaginary straight line VL.

As shown in Fig. 6, the "ventral flap fixing point 11α" is a portion of the abdominal flap 10 that is fixed to the fixed portion 11 of the absorbent body 5 (the portion joined to the absorbent body 5 via a bonding means such as an adhesive). The portion located at the innermost side of the longitudinal direction X and the outermost side of the lateral direction Y. That is, the abdominal flap fixing point 11α is located at the outermost point of the lateral direction Y among the longitudinal ends of the lower portion 1M side of the fixed portion 11. Furthermore, since the fixing portion 11 in the form shown in Fig. 6 is integral with the overlapping portion of the abdominal flap 10 and the absorbent body 5, the abdominal flap fixing point 11α is located along the longitudinal direction X of the absorbent body 5. In the side edge portion 5S, for example, when the fixing portion 11 exists on the inner side of the lateral side Y in the side edge portion 5S as shown in FIG. 7, the abdominal flap fixing point 11α is located closer to the side edge portion 5S. The inner side of the lateral Y.

Further, "the center point 5CP of the absorptive body 5" is a longitudinal center line CLx which extends the absorptive body 5 in the lateral direction Y and extends in the longitudinal direction X and two points in the longitudinal direction X of the absorbent body 5 and in the lateral direction Y The intersection of the extended transverse center line CLy.

Further, the "center point 12CP of the convex portion 12" is defined based on the same idea as the center point 5CP, that is, a longitudinal center line (not shown) in which the convex portion 12 is divided into two in the lateral direction Y and extends in the longitudinal direction X. An intersection with a transverse center line (not shown) that extends the convex portion 12 in the longitudinal direction X and extends in the lateral direction Y.

In addition, the "expanded state of the absorbent body 5" means a state in which the elastic members (elastic members 52, 53 and the like) provided in the absorbent body 5 are extended to expand the absorbent body 5 into a planar shape.

The "inside of the imaginary straight line VL and the inner side of the longitudinal direction X of the imaginary straight line VL" in the above (1), as shown in Fig. 6, means that the absorbent body 5 (diaper 1) is in the expanded state, in the longitudinal direction X. The inner side (i.e., the lateral center line CLy side) is within 2% of the entire length X of the longitudinal direction X of the absorbent body 5, and it is preferable that the abdominal flap fixing point 11α is located within 1%.

As shown in Fig. 6, the "near of the imaginary straight line VL" in the above (2) means that the absorptive body 5 (diaper 1) is in the unfolded state, and is spaced from one side of the longitudinal direction X and the other side. The straight line VL is within 5% of the entire length X of the absorbent body 5, and it is preferable that the side edge portion 40MS of the intermediate width portion 40M is located within 3%.

In addition, as shown in Fig. 6, the "following the imaginary straight line VL" in the above (2) means the side edge portion 40MS of the intermediate width portion 40M and the imaginary straight line in the unfolded state of the absorbent main body 5 (diaper 1). VL is substantially parallel, and more specifically, means that the absolute value of the difference between the reference angle and the inclination angle of the side edge portion 40MS is within 5° based on the inclination angle of the imaginary straight line VL with respect to the longitudinal direction X or the lateral direction Y. Good for less than 3°.

Further, as shown in Fig. 6, the side edge portion 40MS of the intermediate width portion 40M in the diaper 1 is a straight line in plan view, and in the present invention, the side edge portion 40MS is curved when viewed from above. When the side edge portion 40MS is curved in a plan view, the "tangent line" of the side edge portion 40MS of the curve may satisfy the above (2).

The "ventral longitudinal end 53F of the elastic member 53" in the above (3) means the ventral longitudinal end of the elastic member 53 having a stretchable portion, which does not necessarily coincide with the longitudinal end of the elastic member 53. In other words, the "portable portion of the elastic member 53" is fixed to the side of the side flap portion 50 in an extended state, for example, at the ventral end portion of the elastic member 53 in the longitudinal direction (that is, the ventral end portion of the longitudinal direction thereof and When the vicinity of the side flap portion 50 is not fixed, the front end portion in the longitudinal direction does not have stretchability, and therefore is not the "ventral side longitudinal end 53F of the elastic member 53".

In addition, as shown in FIG. 6, the "near vicinity of the virtual straight line VL" in the above (3) means that the absorbent body 5 (diaper 1) is separated from one side of the longitudinal direction X and the other side in the unfolded state of the absorbent body 5 (diaper 1). The imaginary straight line VL is a region within 2% of the entire length X of the absorbent body 5, and it is preferable that the ventral longitudinal end 53F of the leg gather forming elastic member 53 is located within 1%.

Since the diaper 1 satisfies all of the above (1) to (3), it is possible to achieve a high leakage preventing effect by adhering to the wearer's crotch portion by a simple wearing operation without trimming the wearing state. The imaginary straight line VL appearing in the above (1) to (3) and the above-mentioned "disassembled disposable diaper in which a pair of ventral flaps are attached to both side edges of the ventral side portion" of the diaper 1 In a typical wearing operation, the lines of force when the ventral flap 10 is stretched are substantially uniform.

In particular, in the diaper 1 satisfying the above (1), as shown in FIG. 6, the ventral flap fixing point 11α is located on the virtual straight line VL or near the virtual straight line VL and is located further in the longitudinal direction X than the imaginary straight line VL. Therefore, when the convex portion 12 of the abdominal flap 10 is grasped by the fingers during the wearing of the diaper 1 and stretched, the members of the abdominal flap 10 and its vicinity are not easily deformed, and accidental wrinkles or folding are less likely to occur. On the other hand, as shown in FIG. 8( a ), the ventral flap fixing point 11α is located on the outer side of the longitudinal direction X of the imaginary straight line VL (that is, near the ventral longitudinal end 5F of the absorbent body 5), When the convex portion 12 of the abdominal flap 10 is grasped by a finger and stretched in the direction indicated by the arrow in Fig. 8(a), as shown in Fig. 8(b), the abdominal flap 10 and its vicinity are as shown in Fig. 8(b). The member is deformed such that the center point 5CP of the absorptive body 5, the ventral fin fixing point 11α, and the center point 12CP of the convex portion 12 are respectively located on the imaginary straight line VL which is the force line generated by the stretching. As a result, for example, uneven portions Z such as wrinkles or folds are generated in the vicinity of the ventral flap 10 in the ventral longitudinal end 5F of the absorbent body 5. The uneven portion Z is a cause of causing leakage due to a decrease in the adhesion between the diaper 1 and the wearer's body in the worn state of the diaper 1.

Further, the diaper 1 satisfying the above (2) and (3) is used to grasp the convex portion 12 of the ventral flap 10 in the diaper 1 located below the crotch portion of the wearer with a finger during wearing thereof and When the side of the crotch portion is pulled up, in the process of performing the pulling, the shape of the body of the wearer can be naturally obtained, so that it is not necessary to wear the state by satisfying the effect produced by the above (1). It is trimmed and can be fitted to the crotch of the wearer's pants by a simple wearing operation.

In particular, by satisfying the above (2), as shown in FIG. 6, the side edge portion 40MS (imaginary straight line VL) of the intermediate width portion 40M of the absorbent core 40 is set as the boundary, and the side edge portion 40MS is further in the longitudinal direction X. The outer side (the side of the ventral longitudinal end 5F of the absorbent body 5) is a "high-rigidity region 13" in which the ratio of the relatively high rigidity of the absorbent core 40 or the fixed region 9 is relatively high. The portion 40MS becomes closer to the inner side of the longitudinal direction X (the lateral center line CLy side). In the "low-rigidity region 14" in which the ratio of the member having a high rigidity is high, the high-rigidity region 13 is substantially present on the outer side of the longitudinal direction X via the virtual straight line VL, and the low-rigidity region 14 is present on the inner side.

Further, since the high-rigidity region 13 is less likely to be wrinkled or folded due to its high rigidity, the fixed region 9 contained therein has the same characteristics. Therefore, during the wearing of the diaper 1, the fixing region 9 to be fixed as the fastening tape 7 is less likely to wrinkle or bulge, and therefore, the fixing portion 72 of the fastening tape 7 can be firmly fixed to be fixed. The area 9 is such that the diaper 1 can be easily worn without being cumbersome and easy to handle during the wearing operation. In addition, the excretion portion facing portion which is the portion which is most likely to receive the excretion liquid such as urine of the wearer is also included in the high-rigidity region 13 where wrinkles or folding are less likely to occur, so that the excretion is effectively prevented by the diaper 1 A decrease in the absorption performance caused by wrinkles or folding of the opposite portions, and a higher absorption performance is obtained.

Further, the low-rigidity region 14 includes the elastic member 53 for forming the leg gathers, and by satisfying the above (3), the front side longitudinal end 53F is located in the vicinity of the virtual straight line VL, that is, "the force line when the abdominal flap 10 is stretched". Therefore, when the ventral flap 10 is stretched during the wearing operation of the diaper 1, the leg gathers are naturally placed in the groin portion around the wearer's leg. As a result, in the wearing state of the diaper 1, one of the crotch portion 1M is erected toward the trousers of the wearer, and the end portion of the erected leg pleat (the portion where the elastic member 53 is disposed) is in accordance with the wearer's The groin is attached to each other, so that it is less likely to cause leakage. Therefore, after wearing the diaper 1 in accordance with the conventional practice, it is not necessary to perform the dressing state.

When the side edge portion 40MS of the intermediate width portion 40M intersects with the imaginary straight line VL and the above condition (2) is not satisfied, the high rigidity region 13 crosses the imaginary straight line VL, that is, "the force when the ventral flap 10 is stretched. The wire exists and there is a hindrance to the operation of stretching the fastening tape 7.

Further, the side edge portion 40MS of the intermediate width portion 40M is not located in the vicinity of the virtual straight line VL, but is located farther from the imaginary straight line VL toward the inner side of the longitudinal direction X (the lateral center line CLy side). At the time, there is a problem that not only the operation of stretching the fastening tape 7 but also the contraction of the elastic member 53 for forming the leg gathers is hindered.

Further, when the side edge portion 40MS of the intermediate width portion 40M is not located in the vicinity of the virtual straight line VL and is farther away from the outer side of the longitudinal direction X (the side of the abdominal longitudinal end 5F of the absorbent body 5) and the virtual straight line VL, there is a case where A wrinkle or a fold is formed in the opposite portion or the fixed region 9 of the excretory portion.

From the viewpoint of satisfying the effects of the above-described (1) to (3), it is preferable that the non-skin opposing surface of the absorbent body 5 fixed to the abdominal portion 1F (back surface) As shown in Figs. 1 and 6, the fixed region 9 of the sheet 3) is fixed in such a manner as to overlap the wide portion 40W of the absorbent core 40 in plan view, and the fixed portion 9 of the wide portion 40W. The lateral length W1 (refer to FIG. 1) of the repeating portion is longer than 80% of the lateral length (i.e., width) of the fixed region 9, and is preferably in the range of 80 to 120% with respect to the width of the fixed region 9. The lateral length W1 means the maximum length (i.e., the maximum width) of the above-mentioned repeated portions. According to this configuration, in particular, the effects of the above-described (2) and (3) can be surely exerted, and the fixed region 9 can be further easily conformed to the wearer's body in the wearing state of the diaper 1.

Further, the lateral length (i.e., width) of the narrow width portion 40N of the absorbent core 40 is preferably 25% or more, and more preferably 30% or more, with respect to the lateral length (i.e., width) of the absorbent body 5. Further, it is preferably 50% or less, more preferably 45% or less, and more specifically 25% or more and 50% or less, and more preferably 30% or more and 45% or less. If the ratio is too low, that is, the narrow portion 40N is too thin with respect to the absorbent core 40, there is a uneasiness associated with the absorption performance of the user of the diaper 1, and if the ratio is too high, that is, the narrow portion When 40N is too thick with respect to the absorbent core 40, there is a hindrance to the effect by the above (3).

Further, the lateral length W2 (see Fig. 1) of the convex portion 12 of the abdominal flap 10 is preferably 10 mm or more, more preferably 12 mm or more, and further preferably 20 mm or less, and further preferably It is 18 mm or less, and more specifically, it is preferably 10 mm or more and 20 mm or less, and more preferably 12 mm or more and 18 mm or less. In order to surely exert the action and effect produced by the above (1) to (3), it is necessary to grasp the convex portion 12 when the abdominal flap 10 is stretched. Therefore, it is effective to suggest the convex portion 12 to the user of the diaper 1. It is a case of a part that functions as a gripping unit. From this point of view, the case where the lateral length W2 of the convex portion 1 is set to be the same length as the normal human thumb is the above range.

Further, in order to more effectively exhibit the effects produced by the above (2) and (3), it is preferable that the absorbent core 40 has a certain degree of rigidity, and in view of this, absorbability The core 40 is preferably constructed of pulp. As the pulp, those generally used for such an absorbent core can be used without particular limitation, and examples thereof include wood pulp such as NBKP and LBKP; and non-wood pulp such as cotton and hemp. Further, the basis weight of the absorbent core 40 is preferably 250 g/m ² or more, more preferably 350 g/m ² or more, and further preferably 600 g/m ² or less, and more preferably 500 g/m ² or less. More specifically, it is preferably 250 g/m ² or more and 600 g/m ² or less, and more preferably 350 g/m ² or more and 500 g/m ² or less. If the weight per unit area of the pulp in the absorbent core 40 is too large, the rigidity of the absorbent core 40 becomes too high, and there is a feeling of discomfort to the wearer or hindering the action of the wearer.

Although the present invention has been described above, the present invention is not limited to the above embodiment, and can be appropriately modified.

For example, in the diaper 1 of the above-described embodiment, the convex shape of the convex portion 12 of the abdominal flap 10 has an isosceles trapezoidal shape. However, in the present invention, the shape of the front side flap is not particularly limited, and may be, for example, a rectangular shape. Shape and so on.

Further, the absorbent article of the present invention is not limited to the disposable diaper of the above-described embodiment, and widely includes articles for absorbing body fluid (urine, menstrual blood, soft stool, sweat, etc.) discharged from the human body (expanded wearing) The article), for example, also includes a diaper cover, a pad holder, and the like.

The following supplementary notes are further disclosed in the above embodiments of the present invention.

<1>

An absorbent article having a longitudinal direction extending from a ventral side of a wearer to a back side via a crotch portion and a transverse direction orthogonal thereto, and having a longitudinal direction; a crotch portion disposed on the crotch portion when worn; a ventral side a portion disposed closer to the ventral side of the wearer than the lower portion of the crotch; and a dorsal portion disposed on the back side of the wearer than the crotch portion; the absorbent article comprising an absorbent body, the absorptive body a rectangular shape including an absorbent core and having a longitudinally long rectangular shape in plan view, wherein a pair of fixing members are fixed to both sides of the longitudinal direction of the absorbent body in the back side portion, and the belly is A pair of abdominal flaps are fixed to both sides of the longitudinal direction of the absorbent body in the lateral direction so as to extend laterally outward from the both side edges, and the absorbent body has a pair of side flaps, and the absorbent body has a pair of side flaps. a pair of side flap portions extend from the abdominal side portion to the back side portion from the side edges of the absorbent core in the longitudinal direction, and a pair of the side flap portions respectively pass through the lower jaw portion And extending in the longitudinal direction The elastic member for forming a leg gather is disposed in an extended state, and the absorbent core has a wide portion having a relatively long lateral length in the longitudinal direction, a narrow portion having a relatively short lateral length, and the wide portion and the outer portion An intermediate width portion between the narrow width portions, at least a portion of the wide width portion is located at the front side portion, and at least a portion of the narrow width portion is located at the lower portion of the crotch portion, and both side edges of the intermediate width portion are inclined when viewed from above, Each of the abdominal flaps has a convex portion that protrudes laterally outward from one of the lateral edges of the extending portion of the side edge portion of the absorbent body to expose the absorbent body When expanding in a planar manner to form an expanded state, the portion of the abdominal flap that is located at the longitudinal innermost side and the laterally outermost side of the fixed portion of the absorbent body is a belly flap fixing point, and is taken out. When the imaginary straight line passing through the center point of the absorptive body and the center point of the convex portion is satisfied In all of (1) to (3), (1) the ventral fin fixing point is located on the imaginary straight line or in the vicinity of the imaginary straight line and is longitudinally inward of the imaginary straight line, and (2) the intermediate width portion The side edge portion is located in the vicinity of the imaginary straight line and is inclined along the imaginary straight line. (3) The ventral longitudinal end of the leg pleat forming elastic member is located in the vicinity of the imaginary straight line.

<2>

The absorbent article according to the above <1>, wherein the non-skin opposing surface of the front side portion is fixed to the fixed portion to which the fixing member is fixed, and is overlapped with the wide portion of the absorbent core in a plan view Arranged, wherein a lateral length of the overlapping portion of the wide portion and the fixed region is longer than 80% of a lateral length of the fixed region, preferably 80 to 120% with respect to a lateral length of the fixed region The scope.

<3>

The absorbent article according to the above <1>, wherein the transverse length of the narrow portion of the absorbent core is 25% or more and 50% or less of the lateral length of the absorbent body.

<4>

The absorbent article according to any one of the above aspects, wherein the lateral length of the convex portion of the abdominal flap is 10 mm or more and 20 mm or less.

<5>

The absorbent article according to any one of the above aspects, wherein the absorbent core comprises pulp, and the basis weight of the absorbent core is preferably 250 g/m ² or more, and further preferably It is 350 g/m ² or more, and is preferably 600 g/m ² or less, and more preferably 500 g/m ² or less.

<6>

The absorbent article according to any one of the above-mentioned items, wherein the convex portion has an isosceles trapezoidal shape in plan view, and the lateral length gradually decreases toward the laterally outer side.

<7>

The absorbent article according to any one of the above aspects, wherein the vicinity of the imaginary straight line of the above (1) and the longitudinal inner side of the imaginary straight line are in an unfolded state of the absorbent body, The longitudinal inner side of the imaginary straight line is within 2% of the total length of the longitudinal direction of the absorbent body, and preferably the inner side of the abdominal flap is located within 1%.

<8>

The absorbent article according to any one of the above aspects, wherein the vicinity of the imaginary straight line of the above (2) is in a state in which the absorbent body is unfolded, and is formed on one side and the other side in the longitudinal direction, respectively. The imaginary straight line is within 5% of the entire longitudinal direction of the absorbent body, and it is preferable that the side edge portion of the intermediate width portion is located within a range of 3%.

<9>

The absorbent article according to any one of the above-mentioned items, wherein the imaginary straight line is in an unfolded state of the absorbent body, and the imaginary straight line is opposite to the longitudinal or lateral direction. The absolute value of the difference between the reference and the inclination angle of the side edge portion of the intermediate width portion is 5 or less, preferably 3 or less.

<10>

The absorbent article according to any one of the above aspects, wherein the vicinity of the imaginary straight line of the above (3) is in a state in which the absorbent body 5 is unfolded, and one side of the longitudinal direction and the other side are It is preferable that the imaginary straight line is within 2% of the entire longitudinal direction of the absorbent body, and it is preferable that the longitudinal end of the ventral side of the elastic member for forming a leg gather is located within 1%.

<11>

The absorbent article according to any one of the above items <1> to <10> wherein It is desirable to have a high rigidity region on the outer side in the longitudinal direction and a low rigidity region on the inner side.

<12>

The absorbent article according to any one of the above aspects, wherein the transverse length of the narrow portion of the absorbent core is preferably 25% or more with respect to the lateral length of the absorbent body, and further It is preferably 30% or more, and more preferably 50% or less, further preferably 45% or less.

<13>

The absorbent article according to any one of the above aspects, wherein the lateral length of the convex portion is preferably 10 mm or more, more preferably 12 mm or more, and further preferably 20 mm or less, and further preferably 18mm or less.

<14>

The absorbent article according to any one of the above aspects, wherein the absorbent core has a single layer structure.

<15>

The absorbent article according to any one of the above aspects, wherein the intermediate width portion is located at one of the wide portion and the narrow portion, or is located at both positions.

<16>

The absorbent article according to any one of the above aspects, wherein the absorbent core system has a skin facing surface coated with a skin side cladding chip, and the non-skin facing surface is a non-skin side wrapping chip material. Covered, The non-skin side pack core material covers the entire non-skin opposing surface of the absorbent core, and extends laterally outward from both side edges of the absorbent core along the longitudinal direction, and the extension portion is rolled The skin side pack core material disposed facing the skin opposite to the skin of the absorbent core is covered with both side edges along the longitudinal direction of the skin side pack core material.

<17>

The absorbent article according to any one of the above items <1> to <16> wherein a side sheet is disposed on the left and right sides of the longitudinal direction of the opposite side of the skin of the sexual body, The side sheet has an inner edge portion along the longitudinal direction, and a laterally outer side portion along the outer side edge portion and a longitudinal outer edge portion, the outer edge portion from the absorbent core (including the absorbent core described above) The body and the absorbent body covered with the core material covering the absorbent core extend laterally outward along the longitudinal side edges, and are joined to the back sheet forming the non-skin opposing surface of the absorbent body.

<18>

The absorbent article according to any one of the above aspects, wherein the pair of fixing members are each fixed to extend laterally outward from a side edge portion of the absorbent body in the longitudinal direction. The side panel of the stretchable body of the absorbent body and the fastening tape which is fixed to the side panel in a laterally outward direction from the front end portion in the extending direction of the side panel are configured.

<19>

The absorbent article according to the above <18>, wherein the fixing member and the absorbent body are different members.

<20>

The absorbent article according to the above <18> or <19>, wherein the side panel comprises two sheets of a quadrangular shape in plan view, and a plurality of elastic members fixed in an elongated state between the two sheets and extending in the lateral direction. Composition.

[Industrial availability]

According to the present invention, there is provided an absorbent article which can be brought into a wearer's crotch portion by a simple wearing operation without being subjected to trimming in a wearing state, thereby exhibiting a high leakage preventing effect.

Claims (20)

An absorbent article having a longitudinal direction extending from the ventral side of the wearer to the back side via the crotch portion and a transverse direction orthogonal thereto, and having a lower portion in the longitudinal direction, which is disposed on the crotch portion when worn; the ventral side a portion disposed closer to the ventral side of the wearer than the lower portion of the crotch; and a dorsal portion disposed on the back side of the wearer than the crotch portion; the absorbent article comprising an absorbent body, the absorptive body a rectangular shape including an absorbent core and having a longitudinally long rectangular shape in plan view, wherein a pair of fixing members are fixed to both sides of the longitudinal direction of the absorbent body in the back side portion, and the belly is A pair of abdominal flaps are fixed to both sides of the longitudinal direction of the absorbent body in the lateral direction so as to extend laterally outward from the both side edges, and the absorbent body has a pair of side flaps, and the absorbent body has a pair of side flaps. a pair of side flap portions extend from the abdominal side portion to the back side portion from the side edges of the absorbent core in the longitudinal direction, and a pair of the side flap portions respectively pass through the lower jaw portion And extending in the longitudinal direction The elastic member for forming a leg gather is disposed in an extended state, and the absorbent core has a wide portion having a relatively long lateral length in the longitudinal direction, a narrow portion having a relatively short lateral length, and the wide portion and the outer portion An intermediate width portion between the narrow width portions, at least a portion of the wide width portion is located at the front side portion, and at least a portion of the narrow width portion is located at the lower portion of the crotch portion, and both side edges of the intermediate width portion are inclined when viewed from above, Each of the abdominal flaps has a convex portion that protrudes laterally outward from one of the lateral edges of the extending portion of the side edge portion of the absorbent body. When the absorbent body is expanded in a planar shape to be in an expanded state, the portion of the abdominal flap that is located at the longitudinally innermost side and the laterally outermost side of the fixed portion of the absorbent body is a ventral wing. When the sheet is fixed and the virtual line passing through the center point of the absorptive body and the center point of the convex portion is drawn, all of the following (1) to (3) are satisfied: (1) the above-mentioned ventral fin fixing point Located on the imaginary straight line or in the vicinity of the imaginary straight line and further inward than the imaginary straight line, (2) the side edge portion of the intermediate width portion is located in the vicinity of the imaginary straight line, and is inclined along the imaginary straight line. (3) The ventral longitudinal end of the elastic member for forming a leg gather is located in the vicinity of the imaginary straight line. The absorbent article according to claim 1, wherein the fixed region to which the fixing member is fixed is disposed on the non-skin opposing surface of the abdominal portion, and is overlapped with the wide portion of the absorbent core in plan view And the lateral length of the overlapping portion of the wide portion and the fixed region is longer than 80% of the lateral length of the fixed region. The absorbent article according to claim 1, wherein the transverse length of the narrow portion of the absorbent core is 25% or more and 50% or less of the lateral length of the absorbent body. The absorbent article according to claim 1, wherein the convex portion of the abdominal flap has a lateral length of 10 mm or more and 20 mm or less. The absorbent article according to claim 1, wherein the absorbent core comprises pulp, and the absorbent core has a basis weight of 250 g/m ² or more and 600 g/m ² or less. The absorbent article of claim 1, wherein the convex portion has an isosceles trapezoidal shape in plan view, and the lateral length gradually decreases toward the laterally outer side. The absorbent article according to claim 1, wherein the "in the vicinity of the imaginary straight line and the longitudinal inner side of the imaginary straight line" in the above (1) is in an unfolded state of the absorbent body, and the imaginary straight line is longitudinally inward Within 2% of the total length of the longitudinal direction of the absorbent body. The absorbent article according to claim 1, wherein the "near the above-mentioned imaginary straight line" of the above (2) is in an unfolded state of the absorbent body, and the imaginary straight line is respectively absorbed from the one side in the longitudinal direction and the other side. Within 5% of the full length of the vertical body of the sexual body. The absorbent article of claim 1, wherein the "following the imaginary straight line" of the above (2) is in an unfolded state of the absorbent body, and the reference is based on an inclination angle of the imaginary straight line with respect to a longitudinal direction or a lateral direction. The absolute value of the difference between the inclination angles of the side edge portions of the intermediate width portion is within 5°. The absorbent article according to claim 1, wherein the "near the above-mentioned imaginary straight line" in the above (3) is in an unfolded state of the absorbent body, and the imaginary straight line is respectively absorbed from the one side in the longitudinal direction and the other side. Within 2% of the total length of the sexual body. The absorbent article according to claim 1, wherein a high-rigidity region exists on the outer side in the longitudinal direction across the imaginary straight line, and a low-rigidity region exists on the inner side. The absorbent article according to claim 1, wherein the lateral length of the narrow portion of the absorbent core is 25% or more and 50% or less with respect to the lateral length of the absorbent body. The absorbent article of claim 1, wherein the lateral length of the convex portion is 10 mm or more and 20 mm or less. The absorbent article of claim 1, wherein the absorbent core is a single layer structure. The absorbent article according to claim 1, wherein the intermediate width portion is located at one of the abdominal portion and the lower portion of the crotch, or is located at both positions. The absorbent article of claim 1, wherein the absorbent core system has a skin facing surface covered by a skin side wrapping chip, and the non-skin facing surface is a non-skin side wrapping chip. Covering the material, the non-skin side-packaged core material covers the entire area of the non-skin opposing surface of the absorbent core, and extends laterally outward from both side edges of the absorbent core along the longitudinal direction, the extension The part is rolled up on the skin side pack core material that faces the skin of the absorbent core, and covers both side edges of the skin side pack core material along the longitudinal direction. The absorbent article of claim 1, wherein a side sheet is disposed on each of left and right sides of the skin opposite side of the skin of the absorbent body, the side sheet having an inner edge along the longitudinal direction And a laterally outer side portion along the outer side of the inner side edge portion, the outer side edge portion extending laterally outward from the longitudinal side edge of the absorbent core body, and forming the absorbent property The back of the body is not joined to the back side of the skin. The absorbent article according to claim 1, wherein each of the pair of fixing members is fixed to a side of the elastic body so as to extend laterally outward from a side edge portion of the absorbent body in the longitudinal direction. The sheet and the fastening tape of the side panel are configured to extend outward from the front end portion in the extending direction of the side panel. The absorbent article of claim 18, wherein the fixing member is a different member from the absorbent body. The absorbent article according to claim 18, wherein the side panel comprises two sheets having a quadrangular shape in plan view, and a plurality of elastic members fixed in an elongated state between the two sheets and extending in the lateral direction.