TWI642418B - Absorbent article - Google Patents

Abstract

In order to suppress the winding of the wings, etc.

The sanitary napkin (10) of the absorbent article has: a longitudinal direction (A) and a transverse direction (B) orthogonal to each other, and a facing surface of the physiological pants opposite to the opposite side of the skin (clothing facing surface), and includes a body fluid-absorbent body portion (15) and a pair of wing portions (20) respectively facing from opposite sides of the body portion (15) in the lateral direction (B) (16) extending toward the outside of the aforementioned lateral direction (B). Fixing areas (31) and (32) for the physiological pants are respectively provided on the opposing faces of the physiological pants of the main body portion (15) and the wing portions (20). The joint portion (19) between the main body portion (15) and the wing portion (20) has a pair of constricted portions (34a) and (34b) facing each other in the longitudinal direction (A). The wing portion (20) has a widening portion (39) whose longitudinal direction (A) is larger than the longitudinal dimension of the other portion (40). When the lateral (B) dimension of the wing portion (20) is (W1), the widening portion (39) is disposed closer to the main body portion (15) than half (W1/2) of the dimension (W1).

Description

Absorbent article

The present invention relates to an absorbent article suitable for use as a sanitary napkin, a urine absorbing pad, a sanitary pad, and the like.

A cushion-like absorbent article which is used for fixing the inner surface of the underarm region of a pants-type garment (so-called physiological pants) such as a physiological pants is known. It is also known that such an article includes a main body portion that absorbs body fluids, and a pair of wing portions that extend outward from the both side portions of the main body portion that face each other in the lateral direction.

For example, the wing portion of the absorbent article (sanitary napkin) disclosed in Patent Document 1 is formed such that the longitudinal dimension increases from the distal portion (front end portion) toward the proximal portion (base end portion or root portion). Further, a fixing region for the physiological pants is provided on each of the main body portion and the physiological pants facing surface of the wing portion.

According to the absorbent article, a fixing region for the physiological pants is provided on the opposite surface of the physiological pants of the main body portion, and a fixing region for the physiological pants is provided on the opposite surface of the physiological pants of the wing portion. Therefore, the fixing area of the absorbent article and the physiological pants can be enlarged. Thereby, it is possible to suppress the movement of the absorbent article relative to the physiological pants.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2014-8179

The wing portion of the absorbent article disclosed in the above patent document is formed into a substantially trapezoidal shape which gradually increases the longitudinal dimension from the distal portion toward the proximal portion, and the longitudinal dimension of the joint portion between the main body portion and the wing portion. It is larger than the longitudinal dimension of the other parts of the wing. In the sanitary napkin having the wing portion of this form, because of the action of the wearer such as the limp action, some external force acts on the physiological pants and/or the sanitary napkin, for example, the physiological pants having elasticity are oriented toward the front and rear directions (equivalent The expansion and contraction force in the longitudinal direction of the tampon, and the external force acts on the main body portion and/or the wing portion, and is directly transmitted from one side to the other. As a result, "turning" or a positional deviation or wrinkle of the main body portion occurs in the main body portion of the wing portion or the vicinity thereof. Therefore, it is not only an uncomfortable feeling to the inguinal part of the wearer or the vicinity thereof, but also a cause of a decrease in the absorption performance of the sanitary napkin or a leakage of body fluid.

An object of the present invention is to provide an absorbent article which can solve the above problems and the like by an extremely simple means.

In order to achieve the above problems, the present invention is an absorbent In the improvement of the article, the absorbent article is a pad-shaped absorbent article comprising: a longitudinal direction and a transverse direction orthogonal to each other, and a garment facing surface opposite to the skin and an opposite surface thereof, comprising: a body portion absorbing body fluid and a pair of wing portions each extending outward from the lateral direction of the main body portion facing each other in the lateral direction, and respectively on the clothes facing surface of the main body portion and the wing portion A fixing area for the aforementioned physiological pants is provided.

According to another aspect of the invention, the connecting portion between the main body portion and the wing portion has a pair of constricted portions facing in the longitudinal direction, and the wing portion has the longitudinal dimension smaller than the longitudinal dimension of the other portion In the larger widening portion, when the lateral dimension of the wing portion is W1, the widening portion is disposed closer to the main body portion than half of the dimension W1.

According to the absorbent article of one or more embodiments of the present invention, the following actions and effects can be exhibited. (1) Since the connecting portion of the main body portion and the wing portion of the pad-shaped absorbent article has a constricted portion, the front and rear directions (longitudinal direction) of the main body portion and the wing portion toward the article are compared with the case where the constricted portion is not provided. The relative motion, in particular, the movement of the wing relative to the body portion in this direction becomes free. In other words, it acts between the main body portion and the wing portion, and the external force transmitted from one side to the other is weakened in the constricted portion. Therefore, it is possible to prevent the "rolling" caused by the wing portion and the main body portion in the vicinity thereof due to the aforementioned external force. Therefore, the wing portion or the main body portion in the vicinity thereof is caused to have less "rolling" or the positional deviation or wrinkle of the main body portion. Therefore, not only will not wear The wearer's thigh roots or the vicinity thereof cause an uncomfortable feeling, and there is no concern that the absorption performance of the sanitary napkin is lowered or the body fluid leaks. (2) Since the widening portion also has a function of gripping the fixing portion of the wing portion from the clothes, it is easy to peel off the fixing region from the clothes. (3) When the article is fixed to the physiological pants (clothing), the constricted portion also has a function of guiding the wing portion when the wing portion is bent along the side edges of the crotch portion of the physiological pants with respect to the main body portion, so that the The bending and fixing operations become easy. (4) When the lateral dimension of the wing portion is W1, the widening portion is disposed closer to the main body portion than half of the dimension W1. Therefore, when the absorbent article is fixed to the physiological pants, the expanded portion is not in the clothing. The both sides of the garment on the facing side of the skin are firmly fixed to the clothes by the widening portion, so that the wearer can feel at ease.

10‧‧‧Absorbables (sanitary cotton)

11‧‧‧Surface

12‧‧‧ Back sheet

15‧‧‧ Main body

16‧‧‧ both sides

17a‧‧‧End

17b‧‧‧End

19‧‧‧Connecting Department

20‧‧‧ wing

22‧‧‧Weekly Department

23‧‧‧Squeeze

26‧‧‧ Wide section

27‧‧‧ Wide section

31‧‧‧fixed area

32‧‧‧fixed area

34a‧‧ ‧ neck

34b‧‧‧Necked neck

36‧‧‧ 近近部

39‧‧‧Expanding section

42‧‧‧ edge

43‧‧‧Edge

45a‧‧‧inside edge

45b‧‧‧Outside opening

48‧‧‧ convex end

49‧‧‧ Both ends

51‧‧‧Surface

52‧‧‧Back foil layer

53‧‧‧Acceptor

54‧‧‧1st sheet

55‧‧‧2nd sheet

57‧‧‧ pleats

58‧‧‧pleated area

59‧‧‧ Non-pleated groups

60‧‧‧District 1 (elastic zone)

61‧‧‧District 2

63‧‧‧Hot melt adhesive

64‧‧‧ Spacer

72‧‧‧Central gap (gap)

73‧‧‧side edge gap (gap)

74‧‧‧1st imaginary straight line

75‧‧‧2nd imaginary straight line

A‧‧‧ portrait

B‧‧‧ Landscape

L1‧‧‧ longitudinal dimensions of the widening

L4‧‧‧The longitudinal dimension of the constricted neck on the side of the side of the wing

L5‧‧‧The longitudinal dimension of the constricted neck on the end side of the side away from the wing

Horizontal dimensions of the W1‧‧ wings

W2‧‧‧ transverse dimensions of the joint

W3‧‧‧ transverse dimension between the wide sides of the front side of the joint

W4‧‧‧ transverse dimension between the wide sections on the rear side of the joint

W6‧‧‧ transverse dimension of the constricted neck on the side of the side close to the wing

W7‧‧‧ transverse dimension of the constricted neck on the side of the side away from the wing

The following drawings show not only specific embodiments of the present invention, but also an indispensable structure, a selectively implementable structure, and a preferred embodiment of the invention.

Fig. 1 is a partially cutaway plan view showing a skin facing surface of a sanitary napkin according to an example of the absorbent article according to the first embodiment of the present invention.

Figure 2 is a partial bottom plan view showing the garment facing surface of the sanitary napkin of Figure 1.

Fig. 3 is a perspective view showing the sanitary napkin of Fig. 1 fixed to a garment.

Fig. 4 is a partially enlarged view showing the garment facing surface of the sanitary napkin of Fig. 1.

Fig. 5 is a view similar to Fig. 4 of the sanitary napkin of the second embodiment.

Fig. 6 is a view similar to Fig. 4 of the sanitary napkin of the third embodiment.

Fig. 7 is a view similar to Fig. 1 of the sanitary napkin of the fourth embodiment.

Fig. 8 is a view similar to Fig. 2 of the sanitary napkin of Fig. 7.

Figure 9 is a plan view of the sanitary napkin of Figure 7 having an absorbent body.

Fig. 10 is a schematic view showing the X-X line cut surface of Fig. 7.

Fig. 11 is a view similar to Fig. 10 when the sanitary napkin is in an extended state.

Fig. 12 is a view similar to Fig. 4 of the sanitary napkin of the fifth embodiment.

The following embodiments relate to the absorbent article shown in Figs. 1 to 12, which are not only indispensable for the invention, but also include a selective and preferable configuration.

<First embodiment>

Referring to Fig. 1, a sanitary napkin 10 for an absorbent article of the present invention has a longitudinal direction A and a lateral direction B which are orthogonal to each other, and a center line P which bisects the size of the lateral direction B and extends toward the longitudinal direction A, and The skin facing surface of the wearer's skin and the clothing facing surface of the wearer's clothing, and include: a surface sheet 11 on the opposite side of the skin, and a back sheet 12 on the opposite side of the garment. And a body fluid absorbing absorbent body 13 interposed between the back sheets 11 and 12 of the watch.

The sanitary napkin 10 includes a main body portion 15 provided with an absorbent body 13, and a wing portion 20. The main body portion 15 has: facing each other in the lateral direction B Both side portions 16 and both end portions 17a, 17b facing each other in the longitudinal direction A. The main body portion 15 has substantially linear side edges 18 extending in the longitudinal direction A and parallel to the center of the longitudinal direction A. Both side portions 16 of the wing portion 20 main body portion 15 extend outward in the lateral direction B, respectively. A coupling portion 19 is provided between the main body portion 15 and the wing portion 20.

The longitudinal direction A of the front sheet 11 and the back sheet 12 and the main body portion 15 of the lateral direction B are larger than the absorbent body 13, and the end sheets 17a and 17b are continuously provided with the surface sheets 11 and the back sheets 12 which are overlapped with each other. Press section 21. Further, a plurality of press portions 23 that join the leakage preventing sheet 30 and the back sheet 12 to be described later are intermittently provided on the both side portions 16 and the peripheral edge portion 22 of the wing portion 20. At both side portions 16 and the peripheral edge portion 22 of the wing portion 20, the leakage preventing sheet 30 and the back sheet 12, and the portions 24 between the adjacent press portions 23 are joined to each other by, for example, a hot-melt type adhesive 25.

The main body portion 15 has a width W2 which is larger in the lateral direction B than the dimension W2 of the lateral direction B between the connecting portion 19 or its vicinity in the connecting portion 19 between the longitudinal direction A and the both end portions 17a and 17b. The webs 26, 27. According to this configuration, the wearer can obtain an impression that a large amount of body fluid can be absorbed by the wide portions 26 and 27, so that the sanitary napkin 10 is worn with a feeling of relief that the body fluid does not leak. The dimension W2 of the lateral direction B of the connecting portion 19 refers to the dimension of the lateral direction B between the substantially linear side edge portions 18, and the dimension W3 of the lateral direction B between the wide portions 26 on the front side of the connecting portion 19 means the front side. The maximum dimension between the side portions 16 of the lateral direction B and the lateral dimension W4 between the wide portions 27 on the rear side of the coupling portion 19 refer to the maximum dimension between the both side portions 16 of the lateral direction B on the rear side.

The surface sheet 11 is liquid permeable at a portion at least covering the absorber 13. The surface sheet 11 is formed of a material containing a thermoplastic synthetic resin, and as the material, for example, a fiber nonwoven fabric such as a gas-jet nonwoven fabric, a point-bonded nonwoven fabric, or a spunbonded nonwoven fabric can be suitably used.

Referring to Fig. 2, the back sheet 12 is formed of a material containing a thermoplastic resin which is liquid-impermeable, more preferably moisture-permeable and liquid-impermeable. As the material, for example, a moisture-permeable plastic film or a moisture permeable film can be suitably used. A laminate of a plastic film and a fiber nonwoven.

The absorbent body 13 is, for example, a compression molded body of an aggregate of hydrophilic fibers and/or water absorbent fibers, a highly water-absorptive polymer particle having a water-insoluble property of at least 10 times its own mass, and a hydrophilic fiber and/or Or a compression molded body of a mixture of absorbent fibers, and a thin paper or a liquid-permeable fiber nonwoven fabric of the compression molded body, and the compression molded body contains an adhesive such as a water-soluble adhesive. Examples of the hydrophilic fibers and/or water-absorbent fibers include short fibers (wood pulp, synthetic pulp) of rayon fibers and acetate fibers.

The wing portion 20 is disposed to be biased toward one of the both end portions 17a and 17b. More specifically, the sanitary napkin 10 is disposed so that the end portion (one end portion) 17a facing the front side on the front side of the wearer is from the rear side at the rear side of the wearer's rear side. (The other end) 17b is biased when viewed.

The wing portion 20 is formed by, for example, joining a water-repellent or liquid-impermeable leakage preventing sheet (a sheet on the skin facing surface side) 30 and a back sheet 12 to each other by, for example, a hot-melt adhesive. Leakproof sheet 30 A portion 30a is provided on the skin facing surface side of the back sheet 12, and the portion 30a is joined by, for example, a hot melt adhesive (not shown). However, the portion 30a is in a non-joined state with respect to the front sheet portion 11 and the back sheet 12 except for the both end portions 17a and 17b of the inner edge portion 30b extending in the longitudinal direction A, and a gap is formed between the inner edge portion 30b and the surface sheet 11 . Therefore, the body fluid stays in the gap and can prevent side leakage or oozing of the body fluid.

The clothing facing surface (the physiological pants facing surface) of the main body portion 15 and the wing portion 20 is provided with fixing portions 31, 32, for example, by pressure-sensitive adhesive materials, and the fixing portions 31, 32 are for physiological pants. It is fixed and can be peeled off after fixing. Between the manufacture of the sanitary napkin 10 and the wearing, the fixing regions 31 and 32 are covered and protected by a spacer (not shown). The plurality of fixing regions 31 provided in the longitudinal direction A of the main body portion 15 are isolated from each other in the longitudinal direction A.

As shown in FIG. 3, the fixing portion 31 of the main body portion 15 is fixed to the skin facing surface 33a of the wearer's clothing (physical pants) 33, and the fixing portion 32 of the wing portion 20 is fixed to the physiological pants 33. Non-skin opposite face 33b. Therefore, some external forces, such as tensile force, twisting/twisting, etc., are applied to the physiological pants 33 and/or the sanitary napkin 10 due to the movement of the wearer or the like, and the external force acts on the main body portion 15 and/or the wing portion 20 , passed directly from one party to the other.

As shown in FIGS. 1 and 2, according to the sanitary napkin 10, a pair of constricted portions 34a and 34b facing each other are provided in the longitudinal direction A between the connecting portion 19 between the main body portion 15 and the wing portion 20. By the constricted portions 34a, 34b, the relative movement of the main body portion 15 and the wing portion 20 in the front-rear direction (longitudinal direction A) becomes free, in particular, the movement of the wing portion 20 relative to the main body portion 15 in the direction Be free. In other words, the external force acting between the main body portion 15 and the wing portion 20 and transmitted from one side to the other is weakened in the constricted portions 34a, 34b. Therefore, it is possible to prevent the "winding" generated by the wing portion 20 and the main body portion 15 in the vicinity thereof due to the aforementioned external force. Therefore, the wing portion 20 or the main body portion 15 in the vicinity thereof is not "rolled", or the position of the main body portion 15 is deviated or wrinkled. Therefore, it does not cause an uncomfortable feeling to the wearer's thigh root or its vicinity, nor does it cause the absorption performance of the sanitary napkin 10 to be lowered or the body fluid to leak out. Further, when the sanitary napkin 10 is fixed to the physiological pants 33, the constricted portions 34a and 34b also serve as guides for bending the wing portions 20 along the side edges of the crotch portion of the physiological pants 33 with respect to the main body portion 15. The function of the lead portion makes it easy to bend and fix.

As shown in FIG. 4, the constricted portions 34a, 34b have outer side openings 45b opposed to the inner end edges 45a and the longitudinal direction A, and have a shape in which the interval B of the lateral direction B in the longitudinal direction A gradually becomes smaller toward the inner end edge 45a. Further, the inner end edge 45a is gradually expanded toward the outer opening 45b. However, the constricted portions 34a and 34b may have a substantially U-shape or a substantially V-shape.

The wing portion 20 has a proximal portion (base end portion/root portion) 36 that is adjacent to the connecting portion 19 and is located inside the lateral direction B with respect to the center line P; and a distal portion (front end portion) 37 that is opposite to the center line P is located outside the lateral direction B; and a fixation zone 32 is provided at the distal portion 37. Further, as shown in FIG. 1, the wing portion 20 has a dimension L1 of the longitudinal direction A of the wing portion 20 which is the largest expansion portion 39 (the dimension L1 of the longitudinal direction A of the wing portion 20 is larger than the dimension A of the longitudinal portion A of the other portion 40). The widened portion 39) is adjacent to the proximal portion 36, so that the widened portion 39 serves as the fixing portion 32 of the wing portion 20 from the laundry 33 The grasping function makes it possible to easily peel the fixing area 32 from the physiological pants 33.

Referring to Fig. 4, the dimension W1 of the lateral direction B of the wing portion 20 means that the constricted portions 34a, 34b opposed to the longitudinal direction A are connected, and the imaginary straight line 41a extending in the longitudinal direction B is used as a reference, and is farthest from the imaginary straight line 41a. The size of the portion 41b. The fixing portion 32 of the wing portion 20 is disposed closer to the distal portion 37 than the half (W1/2) of the dimension W1 with respect to the dimension W1 of the lateral direction B of the wing portion 20. Further, since the widened portion 39 is disposed closer to the main body portion 15 than half (W1/2) of the dimension W1, when the sanitary napkin 10 is fixed to the physiological pants 33, the expanded portion 39 is located at the non-physical pants 33. On both sides of the physiological pants 33 on the skin facing surface 33b side (see FIG. 3), the sanitary napkin 10 can be firmly fixed to the physiological pants 33 by the widening portion 39, giving the wearer a feeling of being assured. Further, since the widening portion 39 and the fixing portion 32 are disposed in this manner, the fixing portion 32 and the widening portion 39 of the wing portion 20 are separated, and therefore it is suitable for use as the grasping and expanding portion 39.

Further, the both end edges 42, 43 of the longitudinal direction A of the fixing portion 32 of the wing portion 20 are not more than the inner end edge 45a of the constricted portion 34a of the one side and the inner end edge 45a of the constricted portion 34b of the other side. The outer side of the longitudinal direction A extends, and the end edge 42 of the fixing portion 32 and the inner end edge 45a of the constricted portion 34a are disposed at a position L2 only from the longitudinal direction A, and the end edge 43 and the constricted portion 34b of the fixing portion 32 are provided. The inner end edge 45a is disposed at a position L3 which is only a distance from the longitudinal direction A. According to this aspect, in the process of fixing the sanitary napkin 10 to the physiological pants 33, the both end edges 42, 43 of the fixing region 32 can be prevented from being peeled off from the physiological pants 33.

Further, the end portions 49 of the wing portion 20 in the longitudinal direction A have convex end portions 48 which gradually narrow the width of the lateral direction B toward the outer side of the longitudinal direction A, so that the convex end portion 48 can be used only The fixing portion 32 is more easily peeled off from the laundry 33, and the convex end portion 48 is used as a grip portion when the fixing portion 32 of the wing portion 20 is peeled off from the laundry 33. Further, the convex end portion 48 is disposed adjacent to the constricted portions 34a and 34b, and the convex end portion 48 includes the widened portion 39 having a large dimension L1 in the longitudinal direction A of the wing portion 20, so that the neck portion can be effectively utilized and the neck portion can be effectively utilized. 34A, 34b adjacent to the expanded portion 39 and the convex end portion 48.

Further, in the above embodiment, the sheet located on the opposite surface side of the skin is formed by forming a sheet different from the surface sheet 11 and the leakage preventing sheet 30. However, the present invention is not limited to this, and it is also possible to set the sheet located on the opposite side of the skin as a single sheet. This point is also the same in other embodiments to be described later.

Further, in the above embodiment, the sheet on the opposite side of the physiological pants of the main body portion 15 and the wing portion 20 is formed by an integral back sheet 12. However, the present invention is not limited to this, and it is also possible to form a sheet located on the opposite side of the physiological pants with individual sheets. This point is also the same in other embodiments to be described later.

<Second embodiment>

Referring to Fig. 5, in the same manner as the sanitary napkin 10 shown in Fig. 1, the sanitary napkin 10 is disposed such that the sanitary napkin 10 is placed at the rear end portion 17a of the wearer's front side (located at the rear of the wearer). Side) the other side The wing portion 20 is biased when viewed at the end portion 17b.

The dimension of the longitudinal direction A of the constricted portion 34a on the one end portion 17a side of the wing portion 20 among the both end portions 17a, 17b (the size from the convex end portion 48 of the longitudinal direction A to the inner end edge 45a of the constricted portion 34a) L4 is larger than the longitudinal direction A of the constricted portion 34b from the other end portion 17b side of the wing portion 20 from both end portions 17a, 17b (from the convex end portion 48 of the longitudinal direction A to the inner end portion of the constricted portion 34b) The size of the edge 45a) is larger.

According to the sanitary napkin 10 described above, the portion 50 on the front side of the wearer of the wing portion 20 can move more freely with respect to the main body portion 15. Therefore, it is possible to suppress the occurrence of rolling up at the portion 50 on the front side of the wearer of the wing portion 20.

Further, unlike the above-described second embodiment, the sanitary napkin is disposed such that the wing portion is viewed from the other end portion of the wearer's front side when viewed from the other end portion on the rear side of the wearer. The longitudinal dimension of the constricted portion on the end side of one of the both end portions close to the wing portion may be larger than the longitudinal dimension of the constricted portion on the end portion side of the one end portion away from the wing portion.

<Third embodiment>

Referring to Fig. 6, the sanitary napkin 10 is disposed in the same manner as the sanitary napkin 10 shown in Fig. 1 when the sanitary napkin 10 is worn, and is placed at one end portion 17a located on the front side of the wearer. The wing portion 20 is biased when viewed from the other end portion 17b of the rear side of the person.

One of the two end portions 17a, 17b that is close to the wing portion 20 The size of the lateral direction B of the constricted portion 34a on the end portion 17a side (the size from the convex end portion 48 of the lateral direction B to the side portion 16) W6 is larger than the other end portion of the both end portions 17a, 17b away from the wing portion 20. The size of the lateral direction B of the constricted portion 34b on the 17b side (the size from the convex end portion 48 of the lateral direction B to the side portion 16) W7 is larger.

According to the sanitary napkin 10 described above, the portion 50 on the front side of the wearer of the wing portion 20 can move more freely with respect to the main body portion 15. Therefore, it is possible to suppress the occurrence of rolling up of the portion 50 on the front side of the wearer of the wing portion 20.

In addition, when the sanitary napkin is worn, it is disposed so as to be viewed from the other end portion on the front side of the wearer toward the end portion on the rear side of the wearer when the sanitary napkin is worn. The lateral dimension of the constricted portion on the end side of one of the both end portions close to the wing portion may be larger than the lateral dimension of the constricted portion on the side of the end portion away from the wing portion of the both end portions.

<Fourth embodiment>

Referring to Fig. 7, the surface sheet 51 of the sanitary napkin 10 of the present embodiment is formed of a liquid permeable fibrous nonwoven fabric or a porous plastic film having stretchability in the longitudinal direction A and more preferably elastic stretchability. The surface sheet 51 in a state in which the fiber nonwoven fabric is formed can be formed, for example, by a spunbonded nonwoven fabric in which the alignment ratio of the constituent fibers is high in the lateral direction B. Such a surface sheet 51 has a higher alignment ratio of the constituent fibers in the machine direction when the non-woven fabric of the material is manufactured. In the combination of the constituent members of the sanitary napkin, if the non-woven fabric is oriented to the lateral direction In the B arrangement, the alignment ratio of the constituent fibers is higher in the lateral direction B. As a material example of the other surface sheet 51, a nonwoven fabric containing a crimped thermoplastic synthetic fiber or a nonwoven fabric containing an elastic fiber such as a polyurethane fiber can be used. In this case, it is also preferred that the sanitary cotton is disposed such that the alignment ratio of the constituent fibers is higher toward the lateral direction B. Further, the surface sheet 51 has a first region 51a for absorbing the elastic stretchability across the absorber 53 in the lateral direction B, and a second region 51b having a lower elastic stretchability than the first region 51a in the longitudinal direction A, and The first region 51a and the second region 51b are alternately arranged in the longitudinal direction.

The wing portion 20 is provided with a first region 51a at both end portions 49 of the longitudinal direction A, and a second region 51b is disposed at a central portion 67 of the longitudinal direction A.

In the present invention, when the sheet layer or the like (including the sheet or sheet layer) such as the surface sheet 51 and the back sheet layer 52 is stretchable, the dimension A in the longitudinal direction A obtained from the sheet layer or the like is 50 mm in the transverse direction B. A test piece having a size of 25 mm was attached to the tensile tester at both end portions 17a, 17b for holding the longitudinal direction of 10 mm, and the length of the longitudinal direction A was stretched by 30 mm at a speed of 100 mm/min, and the size of the transverse direction B was made every 25 mm. When the stretching force of 30 mN is applied to the longitudinal direction A, the elongation is at least 1.03 to 1.10 times (when the length dimension of the longitudinal direction A in a state in which the sheet layer is not applied, etc. is set to 1.00, the longitudinal direction when the sheet layer or the like is applied The length dimension of A is at least 1.03 to 1.10 times). Of course, the stretchability of the sheet or the like may be 1.10 times or more. Further, in the present invention, when the sanitary napkin 10 is stretched, it means that the widths of the both end portions 17a and 17b of the sanitary napkin 10 are only 10 to 20 mm by the clamp of the tensile tester, for each width. When the tensile force of 700 mm is applied to 25 mm, the sanitary napkin 10 is not damaged between the jig and the jig and is stretched at least 1.03 to 1.10 times. It is also in the above numerical range when, for example, the surface sheet does not have elastic stretchability and the back sheet layer 52 has elastic stretchability, but if the surface sheet has elastic stretchability and the back sheet layer 52 has elastic stretchability, the sanitary napkin is The elongation of 10 may be 1.10 times or more. The elongation was measured by removing the leakage preventing sheet 30. It is preferred to stretch the sanitary napkin 10 at a speed of 100 mm/min. Further, when the sheet or the like has elastic stretchability, it means that the stretching force acts to extend the sheet in the longitudinal direction A to a length of 2.00 times, and then immediately releases the stretching force, the length returns to 1.50 times the length before the stretchability. The following characteristics. A sheet whose length does not return to 1.50 times or less is one which has inelastic stretchability. The tensile force in the longitudinal direction A opposite to each other works for the sanitary napkin 10, that is, in addition to grasping one end portion 17a, 17b of the sanitary napkin 10 and the other end portions 17a, 17b, respectively, in the longitudinal direction A In addition to stretching in the direction in which they are separated from each other, the end portions 17a and 17b are fixed so that the other end portions 17a and 17b are apart from each other.

Referring to Fig. 8, the back sheet layer 52 includes: a first sheet 54, which is non-extensible and liquid-impermeable, more preferably moisture-permeable and liquid-impermeable, located on the opposite side of the garment; and a plurality of second sheets 55, It stretches across the absorbent body 53 in the lateral direction B and elastically toward the longitudinal direction A, and is contractible and thinner in width. The second sheets 55 are arranged at a predetermined interval in the longitudinal direction A. Further, although the illustration is omitted, one piece of the fiber nonwoven fabric having elastic stretchability may be used for the back sheet layer, or three or more sheets may be laminated.

The first sheet 54 in a liquid-impermeable state, for example, by polyethylene A moisture-permeable plastic film such as an olefin resin film is formed. The first sheet 54 in the case of the moisture-permeable liquid-impermeable property is formed, for example, of a plastic film such as an extended polyethylene resin film containing fine particles of an inorganic substance such as calcium carbonate or barium sulfate as a filler. A plurality of pleats 57 are formed in the first sheet 54, and the pleats 57 extend across the absorber 53 and extend from one side portion 16 to the other side portion 16. A plurality of pleats 57 are contiguous with the longitudinal direction A to define the pleat pack 58. Between the pleat packs 58 that are spaced apart in the longitudinal direction A, a non-pleated cluster region 59 in which no pleats 57 are present is defined. In the back sheet layer 52, the first sheet 54 (elastic region) 60 exhibiting elastic stretchability is defined by the first stretched sheet 54 defining the pleat group region 58 and the elastically stretchable second sheet 55. In the non-pleated group region 59, the stretchability toward the longitudinal direction A defines a second region 61 that is lower than the first region 60. The first zone 60 and the second zone 61 are alternately arranged in the longitudinal direction A. The cross-sectional shape of the longitudinal direction A of the pleats 57 is undulated as illustrated in Fig. 10. In order to prevent the pleats 57 from stimulating the wearer's skin at the side portions 16, the pleats 57 are preferably not only the press portions 21, 23 but also the press section. 23 are also in a state of squashing between each other.

The second sheet 55 is formed of, for example, a rubber-elastic plastic film having a polyurethane resin film, and is interposed between the first sheet 54 and the absorber 53 so as to overlap the pleat group 58. More preferably, The entire pleated group region 58 is in a state of being overlapped with the pleat group region 58 and is passed through the applied hot-melt adhesive 63 at intervals in at least one of the longitudinal direction and the lateral direction B in an elastic relaxed state (refer to FIG. 10) is joined to the non-pleated group region 59 of the first sheet 54.

Each of the second sheets 55 is uncovered in each pleat The manner of the entire area of the non-pleated group area 59 between the group areas 58 is isolated along the longitudinal direction A. Therefore, each of the non-pleated group regions 59 does not pass through the second sheet 55 and faces the absorber 53. In the garment facing surface of the non-pleated group region 59, for example, the fixing regions 31, 32 which are detachable from the laundry are provided by the pressure-sensitive adhesive. After the sanitary napkin 10 is manufactured and worn, the fixing regions 31 and 32 are covered and protected by a spacer 64 (see Fig. 10) indicated by an imaginary line. The plurality of fixing regions 31 formed in the main body portion 15 are isolated from each other in the longitudinal direction A, whereby they do not hinder the stretchability in the longitudinal direction A.

In the wing portion 20, the pleated group region 58 and the first region 60 are disposed at both end portions 49 of the longitudinal direction A, and the non-pleated group region 59 and the second region 61 are disposed at the central portion 67 of the longitudinal direction A. The back sheet layer 52 thus formed is in the longitudinal direction A, so that the elastic stretchability of the first region 60 is high, and the elastic stretchability of the second region 61 is low.

The front sheet 51 and the back sheet layer 52 are overlapped with the first region 51a and the first region 60, and the second sheet 51b and the second region 61 are overlapped, and the front sheet 51 and the back sheet layer 52 are placed.

Referring to Fig. 9, the absorber 53 has two side edges 69 extending in the longitudinal direction A along both sides of each lateral direction B, and both end edges 70 extending in the lateral direction B at both ends of the longitudinal direction A. The absorber 53 has a plurality of central slits 72 and side edge slits 73 extending in a wave shape toward the lateral direction B. Each of the center slits 72 is disposed at the center of the lateral direction B so as to traverse the center line P, and partially partitions the absorber 53 in the longitudinal direction A. The absorber 53 is continuous in the longitudinal direction A with respect to both of the lateral directions B of the central slit 72, and the central slit 72 does not reach the side edge 69. The side edge slit 73 extends from the side edge 69 toward the center line P and in the lateral direction B Stretched, configured on both sides 69. The absorber 53 is continuous toward the longitudinal direction A on the side close to the center line P of the side edge slit 73, and the side edge slit 73 does not reach the center line P. The center slits 72 and the side edge slits 73 are preferably formed to be symmetrical with respect to the center line P, and penetrate the absorber 53 in the thickness direction. It is preferable that the slits 72 and 73 have a curve such as a wave shape, but the straight line is not excluded. However, when the slits 72 and 73 are formed in a wavy curve and compared with a straight line, the absorber 53 can be made less attractive to the wearer when it is inelastically stretched in the longitudinal direction A. The absorbent body 53 having the slits 72, 73 has a high inelastic stretch in the longitudinal direction A at the portion where the slits 72, 73 are present, and an inelastic stretch in the longitudinal direction A in the portion where the slits 72, 73 are not present. low. In the sanitary napkin 10, the absorbent body 53 and the back sheet layer 52 are disposed and joined in a state in which all the center slits 72 and the first region 60 are overlapped, but at least one of the slits 72, 73 and the first region 60 may be disposed. In the overlap state, the absorber 53 and the back sheet layer 52 are disposed and joined. Further, the sanitary napkin 10 is disposed such that the intermediate body 72 and the first region 51a are overlapped with each other, and the absorber 53 and the surface sheet 51 are disposed and joined, but at least one of the slits 72, 73 and the first region 51a may be provided. In the overlap state, the absorber 53 and the surface sheet are arranged and joined.

The absorber 53 is joined to the surface sheet 51 and/or the back sheet layer 52 by, for example, a hot melt adhesive (not shown), and the center slit 72 and the side edge slit 73 are in a state where no tensile force is applied to the longitudinal direction A. Closed state. The absorber 53 in a state of being joined to the back sheet layer 52 is preferably joined to the non-pleated group region 59 of the first sheet 54 so as not to prevent the second sheet 55 from extending in the longitudinal direction A, but may be combined with the first sheet 54. Pleated group 58 Engaged or joined to a portion of the second sheet 55.

Referring to Fig. 10, the second sheets 55 adjacent to each other in the longitudinal direction A are not covered by the non-pleated group regions 59 and are isolated from each other, so that the non-pleated group regions 59 and the absorbers 53 are directly opposed to each other. Therefore, in the non-pleated group region 59, the first sheet 54 does not interfere with the second sheet 55, and functions as a gas permeable property, and the water vapor generated by the moisture absorbed by the absorber 53 is directed toward the sanitary napkin 10. The clothes are scattered outside the opposite side.

Referring to Fig. 11, this is a partial enlarged view of the sanitary napkin 10 in which the both end portions 17a and 17b of the sanitary napkin 10 shown in Fig. 7 are grasped and the sanitary napkin 10 is stretched in the longitudinal direction A. The sanitary napkin 10 is stretched in the longitudinal direction A by stretching the first sheet 54 in the longitudinal direction A while elastically stretching each of the second sheets 55. At the both end portions 17a, 17b of the sanitary napkin 10, the surface sheet 51 joined to the back sheet layer 52 also extends in the longitudinal direction A. In particular, the press portion 23 is intermittently formed in the pleat group region 58 of the back sheet layer 52, so that the stretching of the pleat group region 58 is easy. The absorber 53 is joined to the surface sheet 51 and/or the back sheet layer 52 such that at least the center slit 72 of the center slit 72 and the side edge slits 73 are expanded toward the longitudinal direction A. As a result, the sanitary napkin 10 is stretched toward the longitudinal direction A. The stretchability of the sanitary napkin 10 by the stretching is due to the elastic stretchability of the presence of the second sheet 55, and the sanitary napkin 10 elastically contracts when released from the stretching force, close to the state before stretching. . Therefore, when the sanitary napkin 10 is fixed to the crotch region of the garment 33 such as a physiological pants and worn, the sanitary napkin 10 can be elastically stretched or elastically when the underarm region is twisted or bent as the wearer moves. The action of shrinking and following the underarm area. Due to physiological The sanitary napkin 10 is so easily stretched that the fixation areas 31, 32 are not easily peeled off from the underarm area. In the underarm area, there is no slack in the sanitary napkin 10, and wrinkles are not generated only in the sanitary napkin 10, and the sanitary napkin 10 and the garment 33 have a good sense of unity for the wearer.

Further, according to the sanitary napkin 10, all the central slits 72 of the absorbent body 53 are disposed and joined to the first region 60 of the first sheet 51a and the back sheet layer 52 of the surface sheet 51, so that the absorbent body 53 is attached. The central slit 72 is expanded, and the first zones 51a, 60 are elastically stretchable. Further, the back sheet layer 52 has a first region 60 extending across the absorber 53 to extend in the lateral direction B to exhibit elastic stretchability, and a second region 61 having a lower elastic stretchability in the longitudinal direction A than the first region 60, Therefore, the deformation in the first region 60 can be made large in the longitudinal direction A, and the deformation in the second region 61 can be made small, and the stretching force in the opposite direction to the longitudinal direction A can be effected on the sanitary napkin 10, and can be made to the longitudinal direction. A fully stretches. In addition, the sanitary napkin 10 is placed in a region where the gap of the absorber 53 does not exist, and is overlapped with the second region 51b of the surface sheet 51 and the second region 61 of the back sheet layer 52, and the surface sheet 51 and the back surface are placed and joined. Since the sheet layer 52 and the absorber 53 can make the deformation of the second regions 51b and 61 smaller, the above-described effects can be surely achieved (the tensile force in the longitudinal direction A opposite to each other is effective for the sanitary napkin 10 and toward the longitudinal direction A. Fully stretched).

The sanitary napkin 10 has a characteristic that the central slit 72 is formed in the absorbent body 53, and the portion on the center line P of the grip end portions 17a and 17b is easily stretched when stretched in the longitudinal direction A. Thus, the majority in the market Among the sanitary napkins, the wearer who wants to wear the sanitary napkin 10 of the present invention knows the characteristics of the sanitary napkin 10 by stretching the both end portions 17a, 17b of the sanitary napkin in the longitudinal direction A, and can not hesitate Choose a sanitary napkin 10.

Further, in the wing portion 20, the fixing portion 32 is formed on the laundry opposing surface in the central portion 67 of the longitudinal direction A, and the central portion 67 is such that the second regions 51b, 61 and the slits 72, 73 of the absorbent body 53 are not present. The surface sheet 51, the back sheet layer 52, and the absorber 53 are disposed and joined in a facing manner. Therefore, since the fixing portion 32 is formed at a portion where the stretch of the wing portion 20 in the longitudinal direction A is low, the fixing portion 32 of the wing portion 20 can be prevented from being peeled off from the laundry 33.

In the wing portion 20, the front sheet 51 and the back sheet layer 52 are disposed and joined to each other at the both end portions 49 of the longitudinal direction A such that the first region 51a of the surface sheet 51 and the first region 60 of the back sheet layer 52 face each other. Further, since the constricted portions 34a, 34b are included in the first regions 51a, 60, the peripheral edges of the constricted portions 34a, 34b are extended toward the longitudinal direction A. Thereby, the wing portion 20 can move more freely with respect to the main body portion 15. Further, since the first regions 51a and 60 having high elastic stretchability in the longitudinal direction A are disposed at both end portions 49 of the wing portion 20, wrinkles can be suppressed from occurring at the both end portions 49.

Further, since the convex end portion 48 is included in the pleat group region 58, a space is formed between the pleats 57 and the laundry 33, whereby the separation of the wing portions 20 from the laundry 33 is facilitated when the sanitary napkin 10 is discarded.

Further, the sanitary napkin 10 of the fourth embodiment is formed into the same shape as the sanitary napkin 10 of the first embodiment, so that the sanitary napkin 10 can be used. The action and effect of the same effect and effect of the sanitary napkin 10 of the embodiment.

Further, the leakage preventing sheet 30 may be formed of a sheet having elastic stretchability in the longitudinal direction A, or may be formed of a non-elastic sheet.

Further, in the above-described fourth embodiment, the surface sheet 51 is formed by one piece of fiber nonwoven fabric, but a plurality of sheets may be laminated to form a surface sheet layer.

<Fifth Embodiment>

The sanitary napkin 10 of the fifth embodiment differs from the sanitary napkin 10 of the fourth embodiment only in the arrangement of the first regions 51a and 60, and the other shapes and configurations are the same as those of the sanitary napkin 10 of the fourth embodiment.

Referring to Fig. 12, the inner end edges 45 of the constricted portions 34a on the side of the one end portion (the one end portion on the front side of the wearer) 17a of the two end portions 17a and 17b are connected to each other to form The first imaginary straight line 74 in which the lateral direction B extends, the wing portion 20 includes at least the first regions 51a and 60 close to the side of the one end portion 17a with respect to the first imaginary straight line 74. The inner end edge 45 of the constricted portion 34b on the side of the other end portion of the both end portions 17a and 17b away from the wing portion 20 (the other end portion on the rear side of the wearer) 17b is connected to form a second hypothesis. The straight line 75, with respect to the second imaginary straight line 75, the wing portion 20 includes at least the first regions 51a, 60 on the side close to the other end portion 17b. Each of the surface sheet 51 and the back sheet layer 52 of the first regions 51a and 60 can be extended in the longitudinal direction A from the state in which the sanitary napkin 10 is not biased. Surface sheet 51 and back sheet layer of the first regions 51a, 60 For each of the 52, the elongation of 250 mN is applied to the longitudinal direction A for every 20.0 mm of the dimension of the lateral direction B, and the elongation is at least 1.03 to 1.10 times.

According to the above configuration, according to the sanitary napkin 10, the wing portion 20 can be more freely moved with respect to the main body portion 15, and wrinkles can be reliably suppressed at both end portions 49 of the wing portion 20.

The disclosure of the present invention described above can be organized into at least the following matters.

The present invention relates to an absorbent article, which is a pad-shaped absorbent article having: a longitudinal direction and a transverse direction orthogonal to each other, and a garment facing surface opposite to the opposite side of the skin, comprising: a body portion absorbing body fluid and a pair of wing portions each extending outward from the lateral direction of the main body portion facing each other in the lateral direction, and respectively on the clothes facing surface of the main body portion and the wing portion Provided is a fixing region for the physiological pants, wherein the connecting portion between the main body portion and the wing portion has a pair of constricted portions that face each other in the longitudinal direction, and the wing portion has the aforementioned When the longitudinal dimension is larger than the longitudinal dimension of the other portion, when the lateral dimension of the wing portion is W1, the expansion portion is disposed closer to the main body portion than half of the dimension W1.

The invention disclosed in the above paragraphs can at least include the following embodiments. This embodiment can be used separately or in combination with each other.

(1) The constricted portion has an inner edge and an outer opening that face in the longitudinal direction, and gradually expands from the inner edge toward the outer opening.

(2) the both end edges of the longitudinal direction of the fixing portion of the wing portion are not more than the inner end edge of the constricted portion of the one side and the constricted neck of the other side The inner end edge extends further toward the outer side of the longitudinal direction.

(3) The wing portion includes a sheet located on the opposite side of the skin and a back sheet located on the opposite side of the garment, and the sheet located on the opposite side of the skin and the back sheet are along the wing The press portion formed intermittently at the peripheral portion of the portion is joined.

(4) The main body portion has both end portions facing each other in the longitudinal direction, and the main body portion has a width between the connecting portion and the both end portions: the lateral dimension is larger than the lateral dimension of the connecting portion Width.

(5) The size of the longitudinal direction A of the constricted portion on the end portion side of the one end portion of the both end portions is larger than the constricted portion of the end portion side of the both end portions away from the wing portion The aforementioned longitudinal dimension of the portion is larger.

(6) The wing portion is disposed such that one of the both end portions is biased when viewed from the other side, and the lateral dimension of the constricted portion on one end side of the both end portions is closer to the end portion The lateral dimension of the constricted portion on the side of the end portion away from the wing portion of the both end portions is larger than the lateral dimension.

(7) the wing portion has a convex end portion at both end portions in the longitudinal direction adjacent to the constricted portion, and the lateral dimension of the convex end portion is gradually narrowed toward the outer side in the longitudinal direction, and the convex end portion is included in the expansion Width.

(8) The main body portion of the article includes: a surface sheet layer on the opposite side of the skin, a back sheet layer on the opposite side of the garment, and a body fluid interposed between the surface sheet layer and the back sheet layer In the absorbent body, the surface sheet layer, the back sheet layer, and the absorber have stretchability in the longitudinal direction, and the back sheet layer forms an elastic region by the first sheet and the second sheet; The sheet is non-extensible, and a plurality of pleats extending in the lateral direction are adjacent to each other in the longitudinal direction to form a pleat group; the second sheet is elastically stretchable, and the first sheet and the absorbent body are The first sheet is joined to the pleated group region across the absorbent body, and the absorbent body has a plurality of slits extending in the lateral direction, and the tensile force is applied to the longitudinal direction opposite to each other. In the case of the above-mentioned article, the slit is expanded to thereby exhibit stretchability in the longitudinal direction, at least one of the slits and the elastic region are disposed in an overlapping state, and the constricted portion is included in the elastic region.

(9) The convex end portion is included in the pleat group region.

(10) The wing portion is disposed such that one of the both end portions is biased when viewed from the other side, and an inner end of the constricted portion on a side closer to one end of the wing portion is formed between the both end portions a first imaginary straight line extending in the lateral direction is formed by the edge connection, and the wing portion includes the elastic region at least on a side close to the one end portion with respect to the first imaginary straight line, and the two end portions are apart from the wing portion The inner end edge of the constricted portion on the other end side of the other end is connected to form a second imaginary straight line extending in the lateral direction, and the wing portion is at least close to the other end portion with respect to the second imaginary straight line. The side includes the elastic region, and both of the elastic regions of the longitudinal direction can extend in a longitudinal direction from a state in which the absorbent article is not biased, and the main body portion is longitudinally applied to a stretching force of 700 mN per 25.0 mm for the lateral dimension. The elongation is at least 1.03 to 1.10 times.

In the description and claims of the present invention, the terms "first" and "second" are merely elements, positions, and the like for distinguishing the same names.

Claims (10)

An absorbent article comprising a pad-shaped absorbent article having: a longitudinal direction and a transverse direction orthogonal to each other, and a garment facing surface opposite to the opposite side of the skin, comprising: a body fluid absorbing body portion and a pair of wings The pair of wing portions extend outward from the lateral direction of the main body portion facing each other in the lateral direction, and the pair of the garment facing surfaces of the main body portion and the wing portion are respectively provided with a pair In the fixing region of the physiological pants, the article has a pair of constricted portions facing the longitudinal direction in a connecting portion between the main body portion and the wing portion, and the wing portion has the longitudinal direction a widening portion having a size larger than the longitudinal dimension of the other portion, and when the lateral dimension of the wing portion is W1, the widening portion is disposed closer to the main body portion than the half of the dimension W1, and the main body portion The method comprises: a surface sheet layer on the opposite side of the skin, a back sheet layer on the opposite side of the garment, and a body fluid suction between the surface sheet layer and the back sheet layer In the absorbent body, the surface sheet layer, the back sheet layer, and the absorber have stretchability in the longitudinal direction, and the back sheet layer is separated from each other in the longitudinal direction by the first sheet and the second sheet. a pair of elastic regions; the first sheet is non-extensible, and the plurality of pleats extending in the lateral direction are adjacent to each other in the longitudinal direction to form a pleat group; the second sheet is elastically stretchable Between the first sheet and the absorber, across the absorbent body and longitudinally The state of the pleated group is joined to the first sheet, and the absorber has a plurality of slits extending in the lateral direction, and the slit is expanded when the tensile force in the longitudinal direction opposite to each other is applied to the article. Thereby, the stretchability in the longitudinal direction is exhibited, at least one of the slits and the elastic region are disposed in an overlapping state, and the constricted portion is included in the elastic region, and is disposed between the pair of elastic regions in the longitudinal direction. There is a non-pleated group of the aforementioned pleats. The absorbent article according to claim 1, wherein the constricted portion has an inner edge and an outer opening that face in the longitudinal direction, and gradually expands from the inner edge toward the outer opening. The absorbent article according to claim 2, wherein the longitudinal end edges of the fixing portion of the wing portion are not more than one of the inner edge of the constricted portion and the other constricted neck portion The inner edge extends further outward of the longitudinal direction. The absorbent article according to any one of claims 1 to 3, wherein the wing portion comprises: a sheet located on the opposite side of the skin, and a back sheet located on the opposite side of the garment, located in the skin The sheet on the facing surface side and the back sheet are joined at a press portion which is intermittently formed along the peripheral edge portion of the wing portion. The absorbent article according to any one of claims 1 to 3, wherein the main body portion has both end portions facing each other in the longitudinal direction, The main body portion has a wide portion having a lateral dimension larger than the lateral dimension of the connecting portion from the connecting portion to the both end portions. The absorbent article according to claim 5, wherein the wing portion is disposed such that one of the both end portions is biased when viewed from the other side, and one of the both end portions is closer to the one end of the wing portion The longitudinal dimension of the constricted portion on the side of the portion is larger than the longitudinal dimension of the constricted portion on the side of the end portion away from the wing portion of the both end portions. The absorbent article according to claim 5, wherein the wing portion is disposed such that one of the both end portions is biased when viewed from the other side, and one of the both end portions is closer to the one end of the wing portion The lateral dimension of the constricted portion on the side of the portion is larger than the lateral dimension of the constricted portion on the side of the end portion away from the wing portion of the both end portions. The absorbent article according to any one of claims 1 to 3, wherein the wing portion has a convex end portion at both end portions of the longitudinal direction adjacent to the constricted portion, and the convex end portion is the aforementioned The lateral dimension gradually narrows toward the outer side in the longitudinal direction, and the convex end portion is included in the expanded portion. The absorbent article of claim 8, wherein the convex end portion is included in the pleat group region. Absorbent material as claimed in any one of claims 1 to 3 The wing portion is disposed such that one of the both end portions is biased when viewed from the other side, and the inner side of the constricted portion on the end side of the one end portion of the both end portions a first imaginary straight line extending in the lateral direction is formed by the edge connection, and the wing portion includes the elastic region at least on a side close to the one end portion with respect to the first imaginary straight line, and the two end portions are apart from the wing portion The inner edge of the constricted portion on the other end side of the other end is connected to form a second imaginary straight line extending in the lateral direction, and the wing portion is at least closer to the side of the other end portion with respect to the second imaginary straight line Including the elastic region, both of the elastic regions can be extended in the longitudinal direction from a state in which the absorbent article is not biased, and the main body portion is elongated in a longitudinal direction of 700 mN per 25.0 mm for the lateral dimension. At least 1.03~1.10 times.