TW201722382A - Absorbent article - Google Patents

Abstract

Provided is an absorbent article capable of suppressing unintentional shape change of the absorbent article when the posture of a wearer repeatedly changes, e.g., when rolling over during sleep, and capable of suppressing leaking and worsening of wearing comfort. The absorbent article has: an absorbent core (31) arranged in the crotch region and the rear-side region; and hip flaps (4). The absorbent core has: a second low basis weight section (42) positioned in the center in the width direction of the absorbent core, in a rear-side region; and a high basis weight section (45) positioned further on the outside in the width direction than the second low basis weight section. The absorbent article (1) has: a surface sheet (11) covering the low basis weight section and the high basis weight section; and flap sheets (15) arranged in the hip flaps. An outside edge (11OE) of the surface sheet is positioned further on the inside in the width direction than an inside edge (15IE) of the flap sheets.

Description

Absorbent article

The present invention relates to an absorbent article such as a sanitary napkin.

Absorbent articles such as sanitary napkins are used when the user is lying down. When the absorbent article is used in a lying state, leakage on the rear side is likely to occur. Therefore, an absorbent article such as a sanitary napkin or the like has an absorbent article having a hip flap that prevents leakage of the rear side (for example, refer to Patent Document 1).

The absorbent article of Patent Document 1 has a lower femoral domain, a posterior region located on the posterior side of the femoral region, an absorbent core disposed in the sub-femoral region and the posterior region, and an absorption in the posterior region. The outer edge of the core has a hip wing extending outward in the width direction. In the hip wing, a support layer is disposed. The support layer is disposed so as to span the field in which the absorbent core is disposed and a part of the hip joint.

[Practical Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Publication No. 2008-520401

The hip flap of the absorbent article of Patent Document 1 is such that the user covers the side of the buttocks of the user while lying down. As described above, in the state in which the absorbent article is attached, the body pressure on the buttocks side of either of the right and left sides is shifted by turning over or the like. For example, when the user turns over and the body pressure on the buttock side on the right side is increased, the right absorbent core is pressed by the buttocks on the right side, and is moved to the right side. The absorbent article of Patent Document 1 is a direction force in which a support layer overlapping the absorbent core is applied to the right side as the movement of the absorbent core moves. However, the outer edge of the support layer of the absorbent article is pressed by the buttocks and cannot move to the right side, and the absorbent core cannot be moved and compressed. When the absorbent core is repeatedly compressed, a part of the absorbent core becomes hard, and a part of the absorbent core is twisted. As a result, the absorber is deformed into an unexpected state, and leakage occurs. Further, since a part of the absorbent core is hardened to harden the surface of the absorbent article, the mounting feeling is deteriorated.

In view of the above, an object of the present invention is to provide an absorbent article which can suppress an unexpected deformation of an absorbent body when a posture of a user is repeatedly changed by turning over, and can suppress occurrence of leakage and deterioration of mounting feeling.

The absorbent article (absorbent article 1) of the present invention has a front-rear direction (front-rear direction L) and a width direction (width direction W) perpendicularly intersecting each other, and a sub-segment field (sub-small field S1) disposed under the strand of the user ) and the posterior side of the posterior side of the sub-femoral region (rear side domain) S3), and an absorbent core (absorbent core 31) disposed in the lower strand field and the rear side region, and an outer side in the width direction of the outer edge of the absorbent core in the rear side region In the buttocks (hip-wings 4), the absorbent core has a low basis weight (second low basis weight portion 42) located at the center in the width direction of the absorbent core in the rear side region, and is located at a lower basis weight portion a high basis weight (high basis weight portion 45) having a width direction outer side and a base weight higher than the aforementioned low basis weight portion, and a surface sheet (surface sheet) covered with the aforementioned low basis weight portion and the aforementioned high basis weight portion 11) and a wing sheet (wing sheet 15) disposed on the hip blade, the outer edge (outer edge 11OE) of the surface sheet is located on the inner side in the width direction of the inner edge (inner edge 15IE) of the wing sheet.

1‧‧‧Absorbables

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧ side flakes

15‧‧‧ wing sheet

20‧‧‧Non-skin sheet

30‧‧‧Acceptor

31‧‧‧Absorbent core

32‧‧‧core wraps

321‧‧‧1st core wrap

322‧‧‧2nd core wrap

41‧‧‧1st low basis weight (Japanese fabric unit area weight)

42‧‧‧2nd low basis weight

43‧‧‧3rd low basis weight

45‧‧‧High base

61‧‧‧1st body bonding

62‧‧‧2nd body bonding

63‧‧‧wing joint

64‧‧‧ hip joints

81‧‧‧Front side press section

82‧‧‧Long press section

84‧‧‧Back side press section

L‧‧‧ direction

W‧‧‧Width direction

T‧‧‧ thickness direction

S1‧‧‧Sub-domain

S2‧‧‧ front side domain

S3‧‧‧ Back side domain

CL‧‧‧ center line

[Fig. 1] A plan view of an absorbent article in an embodiment.

[Fig. 2] A plan view of the absorbent article as seen from the opposite side of Fig. 1.

[Fig. 3] A cross-sectional view of the absorbent article taken along line A-A of Fig. 1.

[Fig. 4] A cross-sectional view along the line A-A of Fig. 1 of the absorbent article in use.

Hereinafter, the absorbent of the embodiment will be described with reference to the drawings. Product. The absorbent article may be any absorbent article such as a sanitary pad (discrete sheet) or a sanitary napkin or an incontinence pad. In the following examples, physiological sanitary napkins discarded after use of one of the absorbent articles will be described.

In the following description of the drawings, the same or similar symbols are attached to the same or similar parts. However, the drawing is only an indication, and it should be noted that the ratio of each size and the like is different from the reality. Therefore, the specific dimensions, etc., should be judged by the following instructions. Further, there are also portions having different dimensional relationships and ratios between the drawings.

(1) The overall composition of the absorbent article

Fig. 1 is a plan view of an absorbent article according to an embodiment. Fig. 2 is a plan view of the absorbent article as seen from the side opposite to Fig. 1. Fig. 3 is a cross-sectional view of the absorbent article taken along line A-A of Fig. 1.

The absorbent article 1 has a front-rear direction L, a width direction W, and a thickness direction T. The front-rear direction L is a direction extending from the front side (ventral side) of the user toward the rear side (back side) or a direction extending from the rear side of the user toward the front side. The width direction W is a direction perpendicular to the front-rear direction L. The thickness direction T is a direction extending from the user's skin facing surface side T1 toward the non-skin opposing surface side T2, and perpendicularly intersecting the front-rear direction L and the width direction W. The skin side T1 is the side that faces the skin of the user when in use. The non-skin-facing side T2 is the side opposite to the skin-facing side T1 when it is used, that is, the side opposite to the skin facing the user.

The absorbent article 1 has a lower femoral domain S1, a front side domain S2, and a rear side domain S3. The sub-femoral field S1 is the field of the excretory opening (e.g., the vaginal opening) facing the user. When the absorbent article is attached to the undergarment, the lower strand S1 is located in the lower portion of the panty. That is, the sub-domain is placed under the user's stock, that is, the field between the user's feet.

The front side field S2 is located on the front side of the sub-stomach field S1. The front end edge of the front side field S2 is a front end edge of the absorbent article 1. The posterior field S3 is located on the posterior side of the sub-stomach region S1. The rear end edge of the rear side region S3 is a rear end edge of the absorbent article 1. The length of the front-back direction L of the rear side region S3 may be longer than the length of the front-back direction L of the sub-sag region S1.

In the sub-stomach field S1, a wing 3 to be described later can be provided. Further, in the rear side region S3, the hip fins 4 that are expanded toward the outside in the width direction W may be provided.

The front end edge of the blade 3 is restricted by the root of the blade 3, and the two portions recessed toward the innermost side in the width direction W correspond to the portion on the front side. The front end edge of the wing 3 may be restricted to the boundary between the sub-sag region S1 and the front side domain S2. The rear end edge of the blade 3 is restricted by the root of the blade 3, and the two portions recessed toward the innermost side in the width direction W correspond to the portion on the rear side. The rear end edge of the wing 3 may be restricted to the boundary between the sub-sag region S1 and the rear side domain S3. Here, the field between the front end edge of the wing 3 in the front-rear direction L and the rear end edge of the wing 3 is referred to as a "wing field". In the winged absorbent article, the sub-sand field S1 is substantially the same domain as the wing domain. Therefore, it should be noted that in this specification, the term "sub-domain S1" can be replaced with "wing domain".

The absorbent article 1 has a skin sheet 10, a non-skin sheet 20, and an absorbent body 30. The skin surface sheet 10 is provided on the skin facing surface side T1 of the absorbent body 30. The non-skin surface sheet 20 is provided on the non-skin opposing surface side T2 of the absorber 30. The absorbent body 30 is provided between the skin surface sheet 10 and the non-skin surface sheet 20.

The skin surface sheet 10 may have a surface sheet 11 and a side sheet 12. The surface sheet 11 is a liquid permeable liquid permeable sheet such as a body fluid. The surface sheet 11 covers the central portion of the absorber 30 in the width direction W. The surface sheet 11 extends in the front-rear direction L from the front side domain S2 to the rear side domain S3.

The surface sheet 11 is composed of any sheet-like material having a liquid permeable structure such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet. For the woven and non-woven materials, any of natural fibers and chemical fibers can be used.

The side sheet 12 covers the outer edge of the surface sheet 11 in the width direction W and extends outward in the width direction W from the surface sheet 11. Further, in the present embodiment, the absorbent article 1 has the side sheets 12, but the absorbent article 1 may have no side sheets 12. In this case, the surface sheet 11 can cover the entire absorbent body 30.

The side sheet 12 can be composed of the same material as the surface sheet 11. However, in order to prevent the body fluid adhering to the surface sheet 11 from passing over the side sheet 12 and leaking toward the outside of the absorbent article 1 in the width direction W, the side sheet 12 is preferably hydrophobic or water repellency. The side sheet 12 can be disposed on the outer edge of the absorber 30 in the width direction W, the wing 3 and Hip wing 4.

The non-skin sheet 20 is a liquid impermeable sheet. As the non-skin surface sheet 20, a laminated non-woven fabric mainly composed of a polyethylene sheet or polypropylene, a ventilated resin film, a spun bond, or a non-woven fabric such as a spunlace may be used to bond a sheet of an air-permeable resin film. The non-skin surface sheet 20 is disposed on the non-skin opposing surface side T2 of the absorber 30, and is disposed across the wing 3 and the hip plane 4. The non-skin surface sheet 20 is a non-skin surface constituting the absorbent article 1. In addition, the sheet disposed on the non-skin opposing surface side of the absorbent body, the sheet disposed on the flap, and the sheet disposed on the hip flap may be integrated as in the present embodiment, and may be formed by separate sheets. The composition is also ok.

The absorber 30 is disposed at least in the lower femoral region S1 and the rear side region S3. Further, the absorber 30 may extend from the sub-sag region S1 to the front side region S2. The absorber 30 has an absorbent core 31 including an absorbent material that absorbs liquid, and a core wrap 32 that covers the absorbent core 31. The core wrap 32 may cover the absorbent core 31 at least on the side opposite to the skin of the absorbent core 31. Specifically, the core wrap 32 may have a first core wrap 321 disposed on the skin facing surface side of the absorbent core 31 and disposed on the non-skin than the absorbent core 31. The second core wrap 322 on the surface side. The first core package 321 and the second core package 322 may be formed of the same sheet. The absorbent material constituting the absorbent core 31 can be formed, for example, from hydrophilic fibers, pulp, and superabsorbent polymer (SAP). The core wrap 32 may be composed, for example, of a non-woven fabric and a tissue sheet. Core wrap 32, can have hydrophobicity. The core wrap 32 is hydrophobic and can improve leakproofness.

As described above, the absorbent article 1 has the wings 3 and the hip blades 4. The wing 3 and the hip blade 4 project outward in the width direction W from the outer edge of the absorbent core 31 in the lower strand region S1.

The wing 3 and the hip blade 4 can be formed by laminating the side sheet 12, a wing sheet 15 to be described later, and the non-skin sheet 20. The wing 3 is formed to be foldable on the non-skin surface sheet 20 side. The flap 3 is folded back on the non-skin opposing side of the crotch portion of the undergarment at the time of use.

The hip blade 4 is located on the rear side of the wing 3 and is disposed in the rear side domain S3. The hip blade 4 extends outward in the width direction from the outer edge of the absorbent core 31 of the lower strand region S1. The field in which the hip blades 4 are disposed is located outside the outer edge of the absorbent core 31 of the lower strand field S1 in the width direction. The hip blades 4 are not folded back during use and are disposed between the underpants and the buttocks of the user. In the present embodiment, no absorbent material is provided in the hip blades 4. Instead of this, it is also possible to provide an absorbent material in the hip blade 4.

The outer edge of the hip blade 4 is an arc shape that expands outward in the width direction. The side edge of the hip blade 4 can be formed into a shape having a waveform of a plurality of convex portions 4F. The plurality of convex portions 4F are preferably extended from the outer edge 4E of one of the hip blades 4 through the rear end edge of the rear side region S3 to the outer edge of the other hip flap 4. Instead of this, the plurality of convex portions 4F may be formed only on the outer edge of only one pair of the hip blades 4. The width of each convex portion 4F is preferably 20 mm or less, more preferably 10 mm or less. Further, the width of each convex portion 4F is preferably 3 mm or more.

Further, in the side edges of the hip blades 4, the plurality of convex portions 4F and the concave portions between the convex portions 4F are alternately formed. When a local force is applied from the outer side of the outer edge 4E of the hip blade 4, a small number of convex portions 4F provided near the point of application of the force are folded back. However, since the gaps (concave portions) are formed between the convex portions 4F, the force applied to the certain convex portions 4F is difficult to convey to the adjacent convex portions 4F. As a result, it is possible to suppress the hip joint 4 from being largely curled by using the convex portion 4F to which the local force is applied as a base point.

The measurement of "thickness" in the present specification is performed by the following measurement method.

When the absorbent article 1 is sealed in a package or the like, it is taken out from the package, and a sample placed in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60 % ± 5% RH for 12 hours is used.

At the time of measurement, the absorbent article is not in a reduced state, but is measured in a state in which the stretchable member of the absorbent article is stretched. A rotating disk measuring device PEACOCK manufactured by Ozaki Seisakusho Co., Ltd. was used. The measuring piece was a test piece having a diameter of 10 mm and a size of 30 mm × 30 mm, and the thickness of the test piece was measured. The measuring instrument was adjusted so that the measurement pressure of the test piece became 3 g/cm ² . Here, for the 10 samples, the above measurement was performed in each state, and the average value was taken as the length.

In addition, the measurement of the "basis weight and density of the absorbent core" in the present specification is carried out by the following measurement methods.

When the absorbent article 1 is sealed in a package or the like, it is taken out from the package, and a sample placed in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60 % ± 5% RH for 12 hours is used.

The package was unsealed in the absorbent article packaged by the package, and the folded absorbent article was unfolded, and the thickness and area of the portion measured by the basis weight and density were measured. Next, the portion where the basis weight and the density were measured was cut out from the absorbent article, and the weight of the cut portion was measured. Next, the portion other than the absorbent core such as the surface sheet and the core wrap was removed from the cut portion, and the weight of the absorbent core was measured. The basis weight was calculated from the weight of the absorbent core and the area of the portion measured by the basis weight and density. The density is calculated based on the basis weight and thickness.

The measurement of "length" in this specification is performed by the following measurement methods.

When the absorbent article 1 is sealed in a package or the like, it is taken out from the package, and a sample placed in an atmosphere of 20 ° C ± 2 ° C and a relative humidity of 60 % ± 5% RH for 12 hours is used.

Then, a spring measuring device (tape: glass fiber-inlaid with polyvinyl chloride) manufactured by SINWA Measurement Co., Ltd. was used, and the length of this state of the measurement target portion was measured along the measurement target portion. Here, for the 10 samples, the above measurement was performed in each state, and the average value was taken as the length.

(2) Detailed composition of the absorber

Next, the configuration of the absorber 30 will be more specifically described. The absorbent body 30 is at least in the sub-femoral region S1 and has a middle-high portion 33. The middle and high portion 33 may extend from the sub-stomach region S1 toward the front side domain S2. The middle and high portion 33 is disposed across the center line CL in the submarine region S1. Center line CL, is the pass The center of the over-absorbent article in the width direction, a line extending along the front-rear direction L.

The middle-high portion 33 is a field in which the thickness of the absorbent core 31 is thicker than the thickness of the absorbent core 31 in the region around the middle-high portion 33. The basis weight of the absorbing material of the middle-high portion 33 may be higher than the basis weight of the absorbent core 31 in the field other than the middle-high portion 33 in the sub-sown region S1. The middle portion 33 can be adjacent to the first low basis weight portion 41 to be described later. Preferably, the absorbent core 31 on the rear side of the first low basis weight portion 41 is thinner than the thickness of the middle-high portion 33. More preferably, the absorbent core 31 of the entire rear side region S3 is thinner than the thickness of the middle portion 33. The middle portion 33 has the highest portion having the thickest thickness and the inclined portion connected to the highest portion. The inclined portion may be disposed between the highest portion and the front press portion, which will be described later, and between the highest portion and the first low basis weight portion 41.

The absorbent core 31 may have a first low basis weight portion 41, a second low basis weight portion 42, and a third low basis weight portion 43. Here, the "low basis weight portion" is a field composed of the absorbent core 31 having a lower basis weight than the surrounding absorbent core 31, or a field in which the absorbent core 31 is not provided. Thus, the "low basis weight portion" is a concept including a field in which the basis weight of the absorbent core 31 is zero.

In other words, the "low basis weight portion" may be a slit that penetrates the absorbent core 31 in the thickness direction T. Slotting, although the basis weight of the design is zero, it is also possible to arrange the absorbing material mixed from the periphery. The length of the slit in the width direction W is preferably from 1 mm to 5 mm. For example, if the length of the slit in the width direction is less than 1 mm, the absorbent material will flow into the slit. The deformation base point of the absorbent core 31 cannot be formed. Further, if the length of the slit in the width direction is more than 5 mm, the user may feel uneasy about the leakage of the body fluid.

The basis weight of the absorbent core 31 in the low basis weight portions 41 to 43 is preferably 150 g/m ² or less, more preferably 100 g/m ² or less. Further, the basis weight of the absorbent core 31 in the low basis weight portions 41 to 43 is further preferably substantially 0 g/m ² . Further, the basis weight of the absorbent core 31 in the low basis weight portions 41 to 43 is preferably 60% or less, and 50% or less of the basis weight of the absorbent core (excluding the middle and high portions) around the low basis weight portions 41 to 43. Better.

The "low basis weight portion" is a region in which the absorbent core 31 is not provided, and the core wrap 32 may surround the entire absorbent core 31 by straddle the low basis weight portion. In this case, even if the absorbent core 31 is divided into a plurality of domains, the absorbent body 30 is integrally formed by the core wrap 32.

The first low basis weight portion 41, the second low basis weight portion 42, and the third low basis weight portion 43 are boundary lines that change the rigidity of the absorber 30. Therefore, the first low basis weight portion 41, the second low basis weight portion 42, and the third low basis weight portion 43 correspond to a field in which the absorber 30 is easily deformed.

The first low basis weight portion 41 extends in the width direction W between the lower femoral region S1 and the rear side region S3. The first low basis weight portion 41 may extend linearly in the width direction W or may extend in a curved shape along the width direction W.

The first low basis weight portion 41 may be provided on the rear side of the center of the wing 3 in the front-rear direction L and on the front side of the rear side edge of the absorber 30. The first low basis weight portion 41 is in the front-rear direction L, and the rear end edge of the wing 3 is spanned. The way the settings are also available.

In the present embodiment, the first low basis weight portion 41 has a curved shape in which the center of the width direction W of the first low basis weight portion 41 protrudes rearward. More specifically, the center of the width direction W of the first low basis weight portion 41 is located rearward than the outer edge of the first low basis weight portion 41. The length of the first low basis weight portion 41 in the front-rear direction L may be constant, and may not necessarily be sufficient. The sub-sag region S1 located on the front side of the first low basis weight portion 41 is a force that is easily twisted by the action of the foot by being held by both feet. In the absorbent article 1, since the first low basis weight portion 41 has a curved shape, it is easy to follow the twist of the body, and the deformation caused by the movement of the body is easily evaded.

Preferably, the length of the first low basis weight portion 41 in the width direction W is 25 mm or more. Thereby, it is possible to suppress the movement of the absorber 30 in the sub-femoral region S1 to be transmitted to the rear side region S3. More preferably, the first low basis weight portion 41 extends from one end to the other end of the absorber 30 in the width direction W. In this case, the front end edge of the first low basis weight portion 41 may limit the rear end edge of the sub-sag region S1, and the rear end edge of the first low basis weight portion 41 may limit the front end edge of the rear side region S3.

The first low basis weight portion 41 is an absorbent material that constitutes the absorbent core 31 by extending from one end to the other end of the absorbent body 30 in the width direction W. However, the first low basis weight portion 41 moves between the lower femoral region S1 and the rear side region S3. difficult. Therefore, it is possible to further suppress the local concentration of the absorbing material constituting the absorbent core 31 by the action during wearing.

The length of the first low basis weight portion 41 in the front-rear direction L is The position of the center line CL of the absorbent article 1 is preferably 10 mm or more and 50 mm or less, more preferably 10 mm or more and 30 mm or less.

The absorbent article 1 of the embodiment can be independently deformed in the lower femoral region S1 and the rear side domain S3 by having the first low basis weight portion 41. More specifically, the length of the first low basis weight portion has a length of 10 mm or more, and the first low basis weight portion extends from one end to the other end, and the absorbent article is also in the first low basis weight portion 41. The deformation is deformable in a direction other than the thickness direction, and the deformations of the sub-sag region S1 and the rear side region S3 do not interfere with each other and can be independently deformed. As a result, even if a wide variety of external forces are applied to the absorbent article 1 by the action of the user in the lying posture and the limp, the lower femoral domain S1 and the rear side domain S3 are independently deformed, and the femoral lower The domain S1 and the rear side domain S3 can be continuously fitted to each other in the shape of the body.

Since the mid-high portion 33 is provided in the sub-femoral region S1, the absorption performance of the sub-femoral region S1 can be ensured, and the fit of the sub-femoral region S1 can be improved. In the absorbent article according to the embodiment, the lower femoral region S1 can be followed along the body, and the rear side region S3 can be followed by the movement of the body.

The second low basis weight portion 42 is located at the center in the width direction of the absorbent core 31 in the rear side region S3. The second low basis weight portion 42 extends in the front-back direction L along the center line CL of the absorbent article in the rear side region S3. The second low basis weight portion 42 can linearly extend in the front-rear direction L. The second low basis weight portion 42 is preferably connected to the first low basis weight portion 41.

The absorbing material constituting the absorbent core 31 by the first low basis weight portion 41 and the second low basis weight portion 42 is in the sub-stomach region S1 (or the wing region), It is difficult to move between the right side portion of the rear side field S3 and the left side portion of the rear side field S3. Thereby, it is possible to suppress the partial absorption of the absorbing material constituting the absorbent core 31 by the action during wearing. As a result, in the wearing of the absorbent article 1, the feeling of the user can be alleviated. Therefore, the user, in particular, in a lying position, is less likely to feel a strange feeling.

Further, in the rear side region S3, if the side portion of the absorbent core 31, that is, the high basis weight portion 45 is pressed by the left and right buttocks, the center of the absorbent core 31 in the width direction of the rear side region S3 is the second lowest. The base portion 42 is raised as a vertex toward the user side. Therefore, during wearing, the second low basis weight portion 42 protrudes toward the skin side of the user. Since the second low basis weight portion 42 extends in the front-rear direction L in the rear side region S3, it is easy to bond along the groove of the user. Further, as described above, the absorbent article is easily deformed independently in the lower femoral region S1 and the rear side region S3 by the first low basis weight portion 41. In other words, the absorbent article 1 can be bonded to the shape of the body in both the lower femoral region S1 and the rear side region S3 by independently deforming the sub-femoral region S1 and the posterior region S3.

The rear end edge of the second low basis weight portion 42 may be located further rearward than the center of the rear side region S3 in the front-rear direction. Further, the rear end edge of the second low basis weight portion 42 may be located further rearward than the position P1 of the maximum amplitude of the hip blade 4. The length of the second low basis weight portion 42 in the front-rear direction L is preferably 120 mm or more, and more preferably 150 mm or more. Preferably, the length of the second low basis weight portion 42 in the width direction W is 1 mm or more and 5 mm or less. In the section along the front-rear direction L of the user's body, the groove (groove) between the buttocks exists in a field from the rear of the perineum to the coccyx. In absorption In the use of the sexual article, the second low basis weight portion 42 is disposed in the field of the user's sulcus.

The third low basis weight portion 43 extends outward from the second low basis weight portion 42 in the width direction W in the rear side region S3. The third low basis weight portion 43 can be connected to the second low basis weight portion 42. The edge of the front side of the third low basis weight portion 43 is on the inner side in the width direction W and can extend substantially in parallel in the width direction W. Further, the edge line of the front side of the third low basis weight portion 43 can protrude forward in the width direction W. The edge line of the rear side of the third low basis weight portion 43 can be inclined forward as it goes from the inner side in the width direction W toward the outer side. The third low basis weight portion 43 is a low basis weight portion.

Since the rigidity is changed by the third low basis weight portion 43 as a boundary, the third low basis weight portion 43 serves as a base point for deformation of the absorbent article 1. In the rear side region S3 of the absorbent article 1, a base point of deformation extending in the width direction is formed. In the absorbent core 31 of the rear side region S3, since the third low basis weight portion 43 can be deformed at the base point, the absorbent article 1 is more easily bonded to the arc along the front-rear direction L of the body. In particular, the edge of the rear side of the third low basis weight portion 43 has a shape that is inclined forward from the inner side in the width direction W toward the outer side, and therefore is easily disposed along the arc of the buttocks of the user.

The outer edge of the third low basis weight portion 43 in the width direction W is located on the inner side of the outer edge of the absorbent core 31 in the rear side region S3. The third low basis weight portion 43 is provided in plural in the front-rear direction L with an interval therebetween. The third low basis weight portion 43 is a curved portion constituting the present embodiment. Third The low basis weight portion 43 is configured such that the absorbent article 1 can be bent in the thickness direction. The "curved portion" may be extended in the width direction, and may be parallel to the width direction, and may be inclined even in the width direction. The "curved portion" may be a configuration of the deformation base point of the absorbent core 31, and may be composed of a low basis weight portion, and the absorbent core 31 may be a press portion compressed in the thickness direction.

The absorbent core 31 has a high basis weight portion 45 located outward in the width direction of the second low basis weight portion 42 in the rear side region S3. The basis weight of the absorbing material of the high basis weight portion 45 is lower than the basis weight of the absorbing material of the absorbent core 31 around it. The high basis weight portion 45 is a portion of the absorbent core 31 of the rear side region S3 except for the second low basis weight portion 42 and the third low basis weight portion. The second low basis weight portion 42, the third low basis weight portion 43, and the high basis weight portion 45 are covered by the surface sheet 11.

(3) Press section

The absorbent article 1 is a press portion formed by at least compressing the absorbent core 31 in the thickness direction T. The press portion may include a front side press portion 81, a length press portion 82, and a pair of rear side press portions 84.

The front side press portion 81 is provided at least in the sub-sag region S1. The front side press portion 81 may extend from the lower femoral region S1 toward the front side region S2. The front side press portion 81 can be formed by compressing the surface sheet 11 and the absorbent core 31 and the core wrap 32 in the thickness direction T. The front side press portion 81 has a section along the front-rear direction L provided on both sides in the width direction W of the middle-high portion 33. The front side press portion 81 can limit the width of the middle and high portion 33 The side edge in the direction W.

The length press portion 82 is provided on the center line CL in the rear side region S3, and more specifically, on both sides of the second low basis weight portion 42. The length press portion 82 can be formed by compressing the absorber 30 and the surface sheet 11 in the thickness direction.

In the rear side region S3, if the side portion of the absorbent core 31, that is, the high basis weight portion 45 is pressed by the left and right buttocks, the center of the width direction of the absorber in the rear side region S3 is the second lowest basis weight. The portion 42 is raised as a vertex toward the user side. The length press portion 82 is disposed on both sides in the width direction of the second low basis weight portion 42 and serves as a base point for deformation when the second low basis weight portion 42 is raised toward the user side. By having the length press portion 82, it is easy to maintain the convex deformation of the second low basis weight portion 42, and the absorber 30 can be easily attached to the gap between the buttocks of the user.

The length press portion 82 extends in the front-rear direction L. The length press portion 82 may extend linearly in the front-rear direction L, and may extend in a curved shape obliquely to the front-rear direction L. The length press portion 82 may be formed on the front side of the position P1 of the maximum amplitude of the hip blade 4.

The front side press section 81 and the length press section 82 can be divided in the front-rear direction. By breaking the front side press section 81 and the length press section 82, it is possible to suppress the force from propagating to the lower femoral region S1 and the posterior side region S3. Therefore, by deforming the sub-femoral region S1 and the posterior region S3 independently, it is possible to fit the shape of the body in the lower femoral region S1 and the posterior region S3. Moreover, in the modification, the front side press part 81 and the length press part 82 may be continuously connected.

The pair of rear side press portions 84 are provided in the rear side region S3 with the center line CL held on both sides. The rear side press portion 84 can be formed by compressing the absorber 30 and the surface sheet 11 in the thickness direction. The pair of rear side press portions 84 are provided to be separated from each other by the center line CL passing through the center of the width direction W of the absorbent article 1. The pair of rear side press portions 84 may be located further rearward than the position P1 of the maximum amplitude of the hip blades 4.

The pair of rear side press portions 84 are located further rearward than the position P1 of the maximum width of the hip blades 4 in the width direction, and the pair of rear side press portions 84 are enlarged in accordance with the distance in the width direction toward the rear side. A wide range of widths. The maximum amplitude of the hip blades 4 in the width direction W is located further rearward than the center of the rear side region S3 in the front-rear direction.

A wide area that is held by a wide range of widths is equivalent to the vicinity of the user's bones. In this field, the press section does not exist, and on both sides of the field, a pair of rear side press sections 84 having a higher rigidity exist. Thus, the wide area is maintained on a relatively flat surface. Since the relatively flat surface touches the skin near the fairy bone, the effect on the user's skin can be alleviated. Further, since the wide-width region is maintained on a relatively flat surface, the convex deformation caused by the second low basis weight portion 42 located on the front side of the wide-width region can be flat (planar).

The pair of rear side press portions 84 are disposed such that the opposing faces are spaced apart from each other in the vicinity of the sacral bone and the opposing faces of the buttocks. Since the buttocks are relatively intense, the parts of the buttocks of the absorbent article 1 are also easily operated in response to the user's motion. The movement of the absorbent article 1 is by a pair of rear side press portions having a higher rigidity 84, and it becomes difficult to face the opposite side of the field of the fairy bones, that is, the wide-width field. As a result, the wide area can be maintained on a relatively flat surface, and the influence on the skin of the user can be reduced. Moreover, it is preferable that there is no press portion having a high rigidity in a wide area. Thereby, the influence on the skin of the user can be more moderated.

Further, the pair of length press portions 82 are disposed apart from the pair of rear side press portions 84. Thereby, the operation of the absorbent core 31 behind the rear side region S3 can be suppressed, and the operation of the absorbent core 31 in front of the rear side region S3 can be followed. In particular, the absorbent core 31 in front of the rear side region S3 has a relatively large operation in cooperation with the buttocks of the user. In this case, since the pair of length press sections 82 and the pair of rear side press sections 84 are also separated from each other, the operation of the absorbent core 31 at the rear of the rear side region S3 is alleviated. Therefore, since the action of the absorbent core 31 in the wide width region is alleviated, the stimulation near the user's fairy bone can be reduced.

The absorbent article 1 has the first press portion 85 and the second press portion 87 which are formed by pressing at least two of the sheets constituting the skin surface sheet 10 and the non-skin surface sheet 20 in the thickness direction T. The third press portion 86 may be referred to (refer to Fig. 1). The first press portion 85, the second press portion 87, and the third press portion 86 may be formed along the outer edge of the hip blade 4.

(4) Bonding part

As shown in Fig. 2, the absorbent article 1 is provided with an adhesive portion 60 having an adhesive for fixing the absorbent article 1 to the undergarment S. Bonding part 60 includes a first body bonding portion 61, a second body bonding portion 62, a wing bonding portion 63, and a hip blade bonding portion 64. These adhesive portions 61 to 64 are provided on the non-skin opposing surface side of the non-skin surface sheet 20. The adhesive portions 61 to 64 may be covered by a release sheet in a state before use. The release sheet is used to prevent deterioration of the adhesive of the adhesive portions 61 to 64 before use. The release sheet is removed by the user when in use.

The first body bonding portion 61 is disposed further forward than the second body bonding portion 62. The first body bonding portion 61 and the second body bonding portion 62 extend in the front-rear direction L. The first body bonding portion 61 is disposed apart from the second body bonding portion 62 in the front-rear direction L. The first main body bonding portion 61 can be disposed across the lower femoral region S1 and the front side domain S2 on the front side of the first low basis weight portion 41. The second main body bonding portion 62 is disposed on the rear side field S3 on the rear side of the first low basis weight portion 41. It is preferable that the first body bonding portion 61 and the second body bonding portion 62 are not provided on the center line CL. The wing attachment portion 63 is provided in the wing 3. The hip-wing adhesive portion 64 is provided on the hip blade 4.

The first low basis weight portion 41 is preferably disposed in the thickness direction T so as not to overlap the adhesive portions 61 to 64. More specifically, the first low basis weight portion 41 is provided between the first body bonding portion 61 and the second body bonding portion 62.

Further, the adhesive portion 60 may be disposed in a field overlapping the surface sheet 11. The second body bonding portion 62 of the present embodiment is disposed in a field overlapping the surface sheet 11.

The adhesive portion 60 is not disposed to be heavy with the second low basis weight portion 42 Stacked fields are also available. The second low basis weight portion 42 is not fixed to the undergarment, and is deformed in an action that easily follows the body when the absorbent article 1 is deformed. The second low basis weight portion 42 is softly deformed, and the skin-facing surface of the absorbent article 1 can be softly deformed, and the softness of the skin facing surface of the absorbent article can be easily maintained.

In the absorbent article 1 of the embodiment, the adhesive portion 60 is not disposed in the field in which the second low basis weight portion 42 is disposed, and the high basis weight portion 45 having a higher rigidity than the second low basis weight portion 42 is disposed. The field is configured with a bonding portion 60. Further, the adhesive portion 60 is not disposed in the buffer region B to be described later, and the adhesive portion 60 is disposed in a region in which the high basis weight portion 45 having a higher rigidity than the buffer region B is disposed. In the field of high rigidity, the force from the underpants can be received through the adhesive portion 60. On the other hand, in the field where the rigidity is low, the adhesive portion 60 is not disposed, and it is softly deformable without being subjected to the force from the underpants.

The second low basis weight portion 42 is preferably disposed in the thickness direction T so as not to overlap the adhesive portions 61 to 64. More specifically, the second low basis weight portion 42 is provided between the plurality of second body bonding portions 62.

(5) wing sheet

Next, the wing sheet 15 will be described. The wing sheet 15 is disposed across the sub-sand domain S1, the front side domain S2, and the rear side domain S3. The wing sheets 15 are disposed on the wings 3 and the hip blades 4. Further, the blade sheet 15 may be disposed at least in the rear side region S3. The wing sheet 15 may be disposed at least on the hip blade 4.

The wing sheet 15 is disposed on the side sheet in the thickness direction T 12 and between non-skin facial sheets 20. The outer edge 15OE of the wing sheet 15 is located on the outer edge of the hip blade 4. The outer peripheral shape of the outer side of the wing sheet 15 in the width direction is an arc shape that expands outward in the width direction. The inner edge 15IE of the wing sheet 15 is disposed on the outer side in the width direction of the outer edge 11OE of the surface sheet 11. The outer peripheral shape of the inner side of the wing sheet 15 in the width direction is a linear shape extending in the front-rear direction L.

The wing sheet 15 is made of any sheet-like material having a liquid-impermeable structure such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, or a mesh sheet. The wing sheet 15 of the present embodiment is a hydrophilic permeable nonwoven fabric. By using such a thick and thick non-woven fabric as the wing sheet, it is possible to reduce the area in which the wing sheet 15 is disposed and the difference in thickness of the absorber 30. The field in which the flaps 15 are disposed is that when the hips are in contact with the buttocks, the presence of the hips 4 can be expressed, and the feeling of relief of the buttocks can be imparted during installation.

As shown in Fig. 3, the wing sheet 15 and the surface sheet 11 are disposed apart in the width direction W. The field in which the blade sheets 15 are disposed is a laminated side sheet 12, a wing sheet 15, and a non-skin sheet 20, and has three layers of sheets. In the field in which the surface sheet 11 is disposed in the hip blade 4 (the area in which the surface sheet 11 is disposed on the outer side in the width direction of the absorbent core 31), the laminated side sheet 12, the surface sheet 11, and the non-skin sheet 20 have 3-layer sheet. In the field which is located on the outer side in the width direction of the outer edge 11OE of the surface sheet 11 and inward in the width direction of the blade sheet 15, the side sheet 12 and the non-skin sheet 20 are provided, and have two sheets. A layer located in the outer side in the width direction of the outer edge 11OE of the surface sheet 11 and inward in the width direction of the wing sheet 15 The number is that the number of layers of the field in which the flaps 15 are arranged is smaller, and the number of layers in the field of the hip blades 4 that are disposed more than the surface sheets 11 is smaller.

The thickness of the field between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the wing sheet 15 is such that the thickness of the inner side in the width direction is thinner than the outer edge 11OE of the surface sheet 11, and the thickness of the outer side of the width direction is smaller than that of the outer side. The inner edge 15IE of the sheet 15 is thinner. In the present embodiment, the thickness of the field on the inner side in the width direction from the outer edge 11OE of the surface sheet 11 is 3.5 mm to 4.5 mm. The thickness of the outer side of the inner edge 15IE of the flap sheet 15 in the width direction is 1.0 mm to 2.0 mm. The thickness of the field between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the wing sheet 15 is less than 1.0 mm. Further, the region located outside the outer edge 11OE of the surface sheet 11 in the width direction and wider than the inner edge 15IE of the blade sheet 15 is between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the flap 15 field.

The area between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the wing sheet 15 is smaller in the number of layers adjacent to the width direction W, and the rigidity is low. Therefore, the field between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the wing sheet 15 is a function of the buffer region B which absorbs deformation when the absorbent article 1 is deformed more easily than the adjacent region. In the following description, the area between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the wing sheet 15 is set as the buffer area B. The front end edge of the buffer field B coincides with the front end edge of the flap sheet 15. The rear end edge of the buffer field B is a rear edge of the wing sheet 15 To.

In the buffer area B, the adhesive portion 60 may not be disposed. The adhesive portion 60 may be disposed in a field overlapping the blade sheet 15. The hip-wing portion 64 of the present embodiment is disposed in a field overlapping the blade sheet 15.

The wing sheet 15 is disposed on the wing 3. The wing 3 is three layers of the laminated side sheet 12, the wing sheet 15, and the non-skin sheet 20. Since the rigidity of the wing 3 is increased by the wing sheet 15, the twist of the side edge of the wing 3 can be prevented. Therefore, when the flap 3 is folded toward the non-skin side of the underwear at the time of installation and the flap 3 is held by the foot during wearing, the flap 3 can be prevented from being twisted or bent.

(6) Absorbent articles in wear

Next, the shape of the absorbent article 1 in wearing will be described with reference to Fig. 4 . Fig. 4 is a schematic cross-sectional view taken along line A-A of Fig. 1 in a state in which the user is lying on his back. Fig. 4 (A) to (C) show a state in which the user changes his posture by turning over while lying down. Fig. 4(A) shows a state in which the user is lying down and the weight of the body is equally applied to the left and right buttocks. Fig. 4(B) shows the state in which the weight of the body is applied to the buttocks on the right side during the progress of turning over. Fig. 4(C) shows that the turning over is completed and the user lies on the side, and the weight of the body is applied to the buttock state which is more to the right than the state shown in Fig. 4(B). Further, in Fig. 4, a line showing the shape of the user's body is indicated by a two-dot chain line. And, in Fig. 4, the user's body is supported The bed surface G of the bedding, etc. is displayed by a little lock line.

The sub-stomach region S1 of the absorbent article 1 is disposed facing the lower side of the user's lower body, and the rear side region S3 of the absorbent article 1 is disposed facing the buttocks of the user. The absorbent core 31 of the rear side field S3 is pressed by the user's buttocks in a state in which the user is lying on his back (the state shown in FIG. 4(A)). More specifically, the center of the absorbent core 31 in the rear side region S3 in the width direction is located between the left and right hips, and the receptor pressure is relatively low. On the other hand, the outer edge of the absorbent core 31 of the rear side region S3 is in contact with the swelling portion of the left and right buttocks, and the receptor pressure is relatively high. In the absorbent core 31, when the body pressure is applied to the high basis weight portion 45 located on the outer edge of the absorbent core 31 in the rear side region S3, the second low basis weight portion 42 is deformed toward the user side as a base point. The depression between the buttocks on the left side and the buttocks on the right side is placed (refer to Fig. 4(A)).

As described above, in the state in which the absorbent article 1 is attached, the posture is changed by turning over or the like. For example, as shown in FIG. 4(B), the user's body moves in such a manner that the right side is lower than the left side. The user is an action that twists the body when operating in Figures 4(A) to 4(B). Specifically, the right foot of the user and the buttocks on the right side are rotated in such a manner that the right side surface is downward and moves to the right side. On the other hand, the left foot of the user and the buttocks on the left side are first in a state in which the left foot is kept in contact with the bed surface G, and the buttocks on the left side are floated from the bed surface G. Thereafter, the left foot is moved in such a manner that the hips on the left side float from the bed surface.

When the posture of the user changes to the state shown in FIG. 4(B), the buttocks on the right side are deformed by being crushed. High on the right The basis weight portion 45 is pressed by the buttocks on the right side and moved to the right side (refer to the arrow X in Fig. 4(B)). The rigidity of the buffer region B is such that the rigidity of the field inside the width direction is lower than the outer edge 11OE of the surface sheet 11, and the rigidity of the field outside the width direction is lower than the inner edge 15IE of the blade sheet 15. Therefore, if the high basis weight portion 45 moves to the right side, the buffer field B will be deformed. At this time, the outer edge of the buffer region B (the inner edge 15IE of the wing sheet 15) is hardly moved outward in the width direction, and the inner edge of the buffer region B (the outer edge 11OE of the surface sheet 11) is moved outward in the width direction. . The buffer region B is narrowed, and the deformation of the absorbent core 31 (movement of the high basis weight portion) is absorbed by the buffer region B.

When the right side of the user's body is further below the left side from the state shown in FIG. 4(B), the state shown in FIG. 4(C) is obtained. The user's body is in a state of lying on the side. The outer edge 15OE of the wing sheet 15 is pressed by the buttocks on the right side, and is not movable in the width direction. Therefore, if the high basis weight portion 45 moves to the right side, the buffer field B will be deformed. The buffer field B is further narrowed, and the movement of the high basis weight portion 45 is absorbed by the buffer field B.

(7) Function and effect

According to an embodiment, in the hip flap 4 of the absorbent article 1, a buffer field B is provided. In the absorbent article 1, the deformation of the absorbent core 31 can be absorbed by the buffer region B. The cushioning area B is lower in rigidity than the area in which the surface sheet 11 is disposed, and is lower in rigidity than the field in which the flap 15 is disposed. Therefore, when the high basis weight portion 45 moves outward in the width direction, The movement of the width direction W of the high basis weight portion 45 is absorbed by the buffer region B. For example, in the configuration of the unbuffered region B, when the high basis weight portion 45 is to be moved outward in the width direction, the high basis weight portion 45 comes into contact with other members. The high base weight portion 45 is compressed in contact with other members, and a part becomes hard and a part is twisted.

However, since the movement of the high basis weight portion 45 can be absorbed by the buffer region B, it is possible to suppress the absorption core 31 from being repeatedly compressed, and it is possible to suppress a part of the absorbent core 31 from being hardened and a part of the absorption core 31 to be twisted. The occurrence of leakage caused by the deformation of the absorbent core 31 can be suppressed. When the absorbent core 31 is hardened, the skin-facing surface of the absorbent article 1 becomes hard and the mounting feeling is deteriorated. However, according to the absorbent article 1 of the embodiment, a part of the absorbent core 31 can be prevented from becoming hard after repeated turning over, and the softness of the skin-facing surface of the absorbent article 1 can be maintained. Therefore, the user wears the absorbent article 1 all night, and the softness of the absorbent article 1 can be continuously felt, and the fluffy comfort feeling that the absorbent article 1 is forgotten can be obtained.

Further, as described above, the user performs an action of twisting the body when changing the posture by turning over or the like. Therefore, in the absorbent article 1, a force in the twisting direction is applied. For example, when the absorbent core 31 is twisted, the absorbent core 31 is moved in the direction in which the force is applied, the absorbent core 31 is hardened, and the absorbent core 31 is bent. In the absorbent article 1 of the embodiment, since the second low basis weight portion 42 is provided in the center in the width direction of the absorbent core 31, the movement of the absorbent core 31 on both sides in the width direction of the second low basis weight portion 42 is easily performed. Was broken. Therefore, the force in the torsional direction acts on the absorbent article 1 At this time, the absorbent core 31 which is more right side than the second low basis weight portion 42 and the absorbent core 31 which is further to the left side than the second low basis weight portion 42 also operate separately, and it is difficult to interlock with each other. In addition, the high basis weight portion 45 of the absorbent core 31 that is easily moved by the buffer region B disposed on both sides in the width direction of the absorbent core 31 is the second low basis weight portion 42 and Since the buffer area B is held, the left and right high basis weights 45 are easily operated separately. For example, the user's buttocks are in a state of sitting on one of the high basis weights 45, and also have a movement space in the width direction W of the high basis weight portion 45, and can follow the movement in the twisting direction. Therefore, when the force of the twist acts on the absorbent article 1 by the change in the posture of the user, it is possible to suppress the unexpected deformation and the deviation (twist) of the absorbent core 31, and the action of following the body makes the absorbent core 31 deformation.

The adhesive portion 60 may be a region (buffer area B) that is not disposed between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the blade sheet 15 in the hip blade 4. The force applied from the undergarment to the absorbent article 1 is transmitted through the adhesive portion 60 that fixes the undergarment and the absorbent article 1. The cushioning area B is fixed to the undergarment by the adhesive portion 60, and is deformed by the movement of the body when the absorbent article 1 is deformed. Therefore, the movement of the absorbent core or the like is easily absorbed by the buffer region B, and it is possible to suppress the hardening of a part of the absorbent core 31 and to partially twist the absorbent core 31.

The adhesive portion 60 can be disposed in a field overlapping the wing sheet 15. The adhesive portion 60 is disposed so as to overlap the blade sheet 15, and the region in which the wing sheet 15 is placed is fixed to the undergarment. For example, the user turns over When the field in which the blade sheet 15 is disposed is also moved outward in the width direction together with the absorbent core 31, the position of the entire absorbent article may be deviated, and lateral leakage may occur. However, the field in which the flaps 15 are disposed is fixed to the undergarment and continues along the body of the user. Therefore, the field outside the width direction of the buffer region B can be along the body, and the field corresponding to the inner side in the width direction of the buffer region B and the motion corresponding to the body of the buffer region B can be deformed. Therefore, unexpected deformation of the absorbent core 31 can be suppressed, and the absorption core 31 can be suppressed from being twisted therewith.

The second low basis weight portion 42 may be a slit that penetrates the absorbent core 31 in the thickness direction T of the absorbent article 1. Since the second low basis weight portion 42 is a slit, when the body pressure is applied to the high basis weight portion 45, the second low basis weight portion is easily obtained as compared with the configuration in which the absorbent material is disposed in the second low basis weight portion 42. 42 is deformed from the base point. Therefore, the absorbent core 31 is easily disposed along the recess between the buttocks on the left side and the buttocks on the right side. The absorbent core 31 is more likely to follow the movement of the body, and can suppress leakage of body fluid.

Further, since the second low basis weight portion 42 is slit, the absorbent core 31 can be softly deformed, and the softness of the skin-facing surface of the absorbent article 1 can be maintained. In addition, the second low basis weight portion 42 is slit, and the operation of the absorbent core 31 in which the second low basis weight portion 42 is held in the width direction can be separated. Therefore, the right absorbent core 31 and the left absorbent core 31 can be operated independently of each other without interlocking. When the force in the twisting direction acts on the absorbent article 1, the force applied to the right and left absorbent cores 31 is broken by the second low basis weight portion 42, and the left and right absorbent cores are separately moved to prevent the force from being displaced. The twist of the resulting absorbent core 31 is reversed. Further because The absorption core 31 is difficult to twist, so it is easier to maintain the shape of the depression along the body (hip). The strange feeling is less likely to occur, and the softness and comfort to the skin can be maintained.

The outer edge 15OE of the wing sheet 15 may be located on the outer edge of the hip blade 4. For example, when the outer edge of the wing sheet 15 is located on the inner side in the width direction of the outer edge of the hip blade 4, the rigidity of the outer edge of the hip blade 4 becomes lower, and the outer edge of the hip blade 4 corresponds to the deformation and twist of the buttocks, which may occur. Leaked out. However, since the rigidity of the outer edge of the hip blade 4 can be increased by the wing sheet 15, the field from the outer edge of the hip blade 4 to the buffer region B is likely to continue to follow the body. Therefore, it is possible to suppress the lateral leakage and suppress the unexpected deformation of the absorbent core 31 by the deformation of the buffer region B.

Further, when the outer edge 15OE of the blade 15 is located on the inner side in the width direction of the outer edge of the hip blade 4, the region in which the blade sheet 15 is disposed (the region in the width direction of the outer edge 15OE of the blade 15) is not The area of the wing sheet 15 (the area between the outer edge 15OE of the wing sheet 15 and the outer edge of the hip blade 4) is disposed, and a difference in rigidity occurs. If the rigidity difference of the hip blade 4 is generated, the side edge of the hip blade 4 may be curled based on the occurrence of the rigidity difference. The outer edge 15OE of the wing sheet 15 is formed by the outer edge of the hip blade 4, so that the difference in rigidity of the hip blade 4 is reduced, and curl caused by the difference in rigidity of the hip blade 4 can be prevented.

The third low basis weight portion 43 extending in the width direction W is provided on the outer side in the width direction of the second low basis weight portion 42. The third low basis weight portion 43 may constitute a curved portion. By the curved portion, that is, the third low basis weight portion 43 A deformation base point that extends in the width direction W. Since the third low basis weight portion 43 is formed plurally at intervals in the front-rear direction L, a plurality of deformation base points spaced apart in the front-rear direction are formed in the rear side region S3. In the rear side region S3, the user's buttocks are in contact with each other, and the user in the lying state is applied with a force that expands and contracts in the front-rear direction L as the skin of the buttocks expands and contracts. The absorbent core 31 of the rear side region S3 is pulled in the front-rear direction L, moves in the front-rear direction L, and is compressed in the front-rear direction L. At this time, the third low basis weight portion 43 functions as a buffering field for absorbing the operation of the absorbent core 31. By the third low basis weight portion 43, the torsion caused by the expansion and contraction of the absorbent core 31 can be suppressed, and the absorbent core 31 can be continuously attached to the body, and the state in which the abnormal feeling is suppressed can be easily maintained.

Further, the third low basis weight portion 43 is formed by a plurality of spaces at intervals in the front-rear direction, so that the absorbent core 31 of the rear side region S3 can be deformed at a plurality of base points at intervals in the front-rear direction, and the absorbent core 31 of the rear side region S3 is formed. It is easy to follow the arc of the body (hip). Therefore, the absorbent core 31 is more conformable to the body, and the leakage of body fluid can be suppressed.

The thickness of the field (buffer area B) between the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the wing sheet 15 is such that the thickness of the field in the width direction inner side is thinner than the outer edge 11OE of the surface sheet 11, and the width may be The thickness of the field outside the direction may be thinner than the inner edge 15IE of the wing sheet 15. The buffer field B is thin and easily deformed. Therefore, when the high basis weight portion 45 is moved outward in the width direction by turning over or the like, it is easy to absorb the movement of the high basis weight portion 45 by the buffer region B, and the unexpected deformation of the absorber 30 can be effectively suppressed.

The second low basis weight portion 42 may be disposed on a dotted line extending from the position P1 of the maximum width of the hip blade 4 in the width direction W. The second low basis weight portion 42 is disposed to extend rearward from the position of the maximum amplitude of the hip blade 4 toward the rear. The position of the maximum amplitude of the hip blades 4 is the longest in the width direction W in the absorbent article 1, and the force is easily evaded when the force is applied to the absorbent article 1. The second low basis weight portion 42 is disposed on a broken line extending in the width direction W from the position P1 of the maximum amplitude of the hip blades 4, and the force in the twist direction can be applied to the absorbent article 1 by the wide side. Doping the force prevents the twist of the hip wing 4.

The third low basis weight portion 43 as the low-basis weight portion may be disposed on a dotted line extending in the width direction from the position P1 of the maximum width of the hip-wing 4. The third low basis weight portion 43 is disposed to extend rearward from a position larger than the maximum amplitude of the hip blades 4. When the force in the twisting direction is applied to the absorbent article 1 and the third low basis weight portion 43 is deformed as a base point of the deformation along the arc of the user's buttocks, the portion of the absorbent article 1 having the longest length in the width direction W is The deformation prevents the twist of the hip wing 4.

As described above, when the high basis weight portion 45 is moved outward in the width direction by the user's turning over or the like, the deformation can be absorbed by the buffer field B. When the high basis weight portion 45 is largely moved outward in the width direction, the buffer region B cannot absorb the deformation, and the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the blade sheet 15 collide. Since the bending rigidity of the surface sheet is lower than that of the wing sheet 15, the outer edge 11OE of the surface sheet 11 and the inner edge 15IE of the wing sheet 15 collide with each other, and the wing sheet 15 is deformed, and the surface sheet 11 and the surface sheet can be suppressed. 11 is covered The deformation of the absorbent core 31.

The above embodiments are described in detail using the above-described embodiments, but the present invention is obviously not limited to the embodiments described in the specification. The invention is intended to be modified and modified without departing from the spirit and scope of the invention. Therefore, the description of the present specification is for illustrative purposes only and is not intended to limit the invention.

[Industrial Availability]

An absorbent article can be provided, and it is possible to suppress an unexpected deformation of the absorbent body when the posture of the user is repeatedly changed by turning over, and to suppress occurrence of leakage and deterioration of mounting feeling.

1‧‧‧Absorbables

3‧‧‧ wings

4‧‧‧ hip wing

4E‧‧‧ outer edge

4F‧‧‧ convex

10‧‧‧Skin sheet

11‧‧‧Surface

11OE‧‧‧ outer edge

12‧‧‧ side flakes

15IE‧‧‧ inside edge

30‧‧‧Acceptor

33‧‧‧High and Medium Department

41‧‧‧1st low basis weight (Japanese fabric unit area weight)

42‧‧‧2nd low basis weight

43‧‧‧3rd low basis weight

45‧‧‧High base

81‧‧‧Front side press section

82‧‧‧Long press section

84‧‧‧Back side press section

85‧‧‧1st press section

86‧‧‧3rd press section

87‧‧‧2nd press section

L‧‧‧ direction

W‧‧‧Width direction

S1‧‧‧Sub-domain

S2‧‧‧ front side domain

S3‧‧‧ Back side domain

CL‧‧‧ center line

P1‧‧‧Maximum position

Claims (12)

An absorbent article comprising: a front-rear direction and a width direction perpendicularly intersecting each other, a sub-back field disposed under a strand of a user, a rear side field located at a rear side of the lower strand field, and a lower side field disposed in the strand The absorbent core of the rear side region and the hip flap extending outward in the width direction from the outer edge of the absorbent core of the lower strand region in the rear side region, wherein the absorbent core has a rear side region: a low basis weight portion at the center in the width direction of the absorbent core, and a high basis weight portion located on the outer side in the width direction of the lower basis weight portion and having a higher basis weight than the low basis weight portion, further having the aforementioned low basis weight a surface sheet covered by the high base portion and a wing sheet disposed on the hip blade, wherein an outer edge of the surface sheet is located inward in a width direction of an inner edge of the wing sheet. The absorbent article according to claim 1, further comprising: a non-skin sheet located on a non-skin opposing surface side of the flap sheet; and a non-skin sheet disposed on the non-skin sheet and having the absorbent article attached thereto The adhesive portion of the adhesive for the underpants, wherein the adhesive portion is not disposed in the outer edge of the surface sheet and the inner edge of the wing sheet. The absorbent article according to claim 2, wherein the adhesive portion is disposed in a field overlapping the wing sheet. The absorbent article according to claim 2, wherein the low basis weight portion extends in the front-rear direction, and the adhesive portion is not disposed in a region overlapping the low basis weight portion. The absorbent article according to any one of claims 1 to 3, wherein the low basis weight portion extends in the front-rear direction, and the low basis weight portion penetrates in a thickness direction of the absorbent article. The slit of the aforementioned absorbent core. The absorbent article according to any one of claims 1 to 3, wherein the outer edge of the wing sheet is located on an outer edge of the hip blade. The absorbent article according to any one of claims 1 to 3, wherein the low basis weight portion extends in the front-rear direction, and is disposed on the outer side in the width direction of the low basis weight portion. The curved portion in which the absorbent article is bendable in the thickness direction, and the curved portion extends in the width direction. An absorbent article according to any one of claims 1 to 3, wherein the outer edge of the surface sheet and the inner edge of the wing sheet are The thickness of the field is such that the thickness of the field inside the width direction is thinner than the outer edge of the surface sheet, and the thickness of the outer region in the width direction is thinner than the inner edge of the wing sheet. The absorbent article according to any one of claims 1 to 3, wherein the low basis weight portion extends along the front-rear direction, and the low basis weight portion spans the maximum amplitude from the hip joint wing. The position is arranged on a dotted line extending in the width direction. The absorbent article according to any one of claims 1 to 3, wherein in the aforementioned rear side domain, there is provided extending in the width direction, the basis weight is a lower width than the surrounding absorbent core, and the basis weight is low. In the portion, the low-width base portion is disposed across a dotted line extending from the position of the maximum width of the hip blade toward the width direction. The absorbent article according to any one of claims 1 to 3, wherein the surface sheet has a bending rigidity lower than a bending rigidity of the wing sheet. The absorbent article according to any one of claims 1 to 3, wherein the outer edge of the buttocks has a shape in which a waveform having a plurality of convex portions is formed.