TW201737879A - Absorbent article - Google Patents

Abstract

In order to improve fit on the wearer's buttocks and to suppress excrement leakage, an absorbent core (31) of this absorbent article comprises a pair of first low-basis-weight regions (41) which extend from both outside edges of the absorbent core inwards in the width direction, and a second low-basis-weight region (42) which extends in the longitudinal direction along a centerline connecting the width-direction center in the rear area. The basis weight of the first low-basis-weight regions and the basis weight of the second low-basis-weight region are less than the basis weight of the outside edges of the absorbent core in the rear area (S3). The pair of first low-basis-weight regions (41) are separated in the width direction, and, of the center area (S1), the rear area (S3) and the intermediate area (S4), are arranged only in the intermediate area (S4).

Description

Absorbent article

The present invention relates to an absorbent article in which a sanitary napkin or the like is attached to a pair of underwear.

An absorbent article having a notch extending from the outer edge of the absorbent body toward the inner side in the widthwise direction is disclosed (for example, see Patent Document 1). The gap of Patent Document 1 is that a plurality of gaps are provided at intervals in the front-rear direction.

[Advanced technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2013-52290

In the absorbent article of Patent Document 1, a plurality of notches are formed at intervals in the front-rear direction, and are easily deformed in the entire front-rear direction of the absorbent article via the notch. Therefore, the entire reverse deformation of the absorbent article may cause leakage due to distortion or displacement of the absorbent article. Moreover, in the rear side field of the buttocks of the wearer, the outer sides of both sides of the rear side domain The edge is deformed through the gap. Therefore, there is a concern that the center of the wide side direction of the rear side region is not easily adhered to the body, and a gap is formed between the groove and the absorbent article, and leakage occurs.

Further, in the absorbent article of Patent Document 1, a plurality of notches are formed in the rear side region, and the absorbent material is not disposed in the portion where the notch is disposed. Therefore, there is a concern that leakage of body fluid occurs in the back side via the gap.

In view of the above-described problems, the present invention has an object of improving the fit to the buttocks of the wearer and suppressing the leakage of excrement.

In order to solve the above problems, the absorbent article (absorbent article 1) of the present invention has a front-rear direction (front-rear direction L) and a broad-side direction (wide side direction W) orthogonal to each other; and excretion with the wearer a central domain opposite the mouth (central domain S1); a rear side domain (rear side domain S3) opposite the buttocks of the installer; an intermediate domain (intermediate domain S4) disposed between the aforementioned central domain and the aforementioned rear side domain And an absorbent article disposed in the central domain, the rear side domain, and the intermediate domain of the absorbent core (absorbent core 31), wherein the absorbent core has a width from both outer edges of the absorbent core a pair of first low basis weight regions (first low basis weight regions 41) extending inward in the lateral direction, and a second lower portion extending in the front-rear direction along the center line connecting the centers of the broad sides in the rear side region The basis weight region (the second low basis weight region 42), the basis weight of the first low basis weight region and the basis weight of the second low basis weight region are larger than the outer edge of the absorbent core in the rear side region Lower basis weight, the first low basis weight of the aforementioned pair The domains are separated in the wide-side direction, and are disposed only in the intermediate domain in the central domain, the rear-side domain, and the intermediate domain.

1, 1A‧‧‧absorbent articles

3‧‧‧ wing

4‧‧‧ hip wing

10‧‧‧Skin sheet

20‧‧‧Non-skin sheet

31‧‧‧Absorbent core

33‧‧‧High and Medium Department

41‧‧‧1st low basis weight area

42‧‧‧2nd low basis weight area

61‧‧‧1st body adhesion area

62‧‧‧2nd body adhesion area

81‧‧‧1st side press section

82‧‧‧2nd side press section

L‧‧‧ direction

W‧‧‧Broadside direction

T‧‧‧ thickness direction

S1‧‧‧Central Domain

S2‧‧‧ front side domain

S3‧‧‧ Back side domain

S4‧‧‧ intermediate domain

CL‧‧‧ center line

FL, F1, F2, F3‧‧‧ fold line

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 viewed from the opposite side from Fig. 1.

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

Fig. 4 is a cross-sectional view of the absorbent article taken along line B-B of Fig. 1 .

Fig. 5 is a cross-sectional view showing a state in which the absorbent article shown in Fig. 1 is attached to an installer.

Fig. 6 is a cross-sectional view showing a state in which the absorbent article shown in Fig. 1 is attached to an installer.

FIG. 7 is a view for explaining an operation of a state in which the absorbent article shown in FIG. 1 is attached to an installer.

Fig. 8 is a plan view of an absorbent article according to a modification.

[Formation for carrying out the invention]

At least the following matters can be understood from the description of the present specification and the accompanying drawings.

An absorbent article having: a front-back direction and a broad-side direction orthogonal to each other; a central region opposite the drain of the wearer; a rear-side region opposite the buttocks of the wearer; An intermediate region between the rear side domain and the absorbent core disposed in the central domain, the rear side domain, and the intermediate domain, wherein the absorbent core has two absorbent cores a pair of first low basis weight regions each extending outward in the widthwise direction and a second low basis weight region extending in the front-rear direction along a center line connecting the centers of the widthwise directions in the rear side region The basis weight of the first low basis weight region and the basis weight of the second low basis weight region are lower than the basis weight of the outer edge of the absorbent core in the rear side region, and the first low basis weight of the pair The regions are separated in the wide-side direction, and are disposed only in the intermediate region in the central region, the rear region, and the intermediate region.

According to such an absorbent article, the first low basis weight region suppresses the influence of the deformation of the absorbent core in the central domain on the deformation of the absorbent core in the rear side region, and the absorbent article is in the central domain and the rear side domain. Easy to deform independently. Therefore, the central region of the absorbent article is disposed along the shape of the armpit of the wearer, and the rear side region of the absorbent article can be disposed along the shape of the buttocks of the wearer. Therefore, it is easy to maintain the state in which the central domain and the rear domain are respectively attached to the body, and the feeling of fit can be improved.

In this way, if the wearer walks while the absorbent article is attached to the body, a force in the twisting direction is applied to the central region held by the both legs. At this time, the pair of first low basis weight regions are each deformed, and the deformation due to the force in the twisting direction is absorbed in the first low basis weight region, and the deformation in the rear side region can be reduced. Therefore, in the rear side region, even if the central region moves largely due to the movement of the legs, it moves less than the central region, and the buttocks can continue along the buttocks.

Further, the pair of first low basis weight regions are disposed apart from each other in the broad side direction, and are centered on the absorption core between the pair of first low basis weight regions, and the domains of the central region and the rear side region are deformable in the left and right directions. Therefore, following the body of the wearer during walking, the absorbent article can be deformed by twisting, maintaining the fit of the underarm and the buttocks and suppressing leakage. Further, since the central region and the rear side region are maintained in a state in which the body is adhered while walking, the wearer can obtain a so-called sense of security in which the absorbent article often continues along the body.

In the absorbent article, the non-skin sheet located on the non-skin surface side of the absorbent core is provided with an adhesive region for locking the absorbent article to the undergarment, the first low basis weight region and the first It is desirable that the low basis weight region is disposed in the thickness direction in a region where the adhesion region is not overlapped.

According to such an absorbent article, it is possible to suppress deformation of the first low basis weight region and deformation of the second low basis weight region due to excessively hindering the undergarment. It is possible to suppress the case where the force applied to the central region by the first low basis weight region is transmitted to the rear side region, and the absorbent article is deformed into a convex shape based on the second low basis weight region to maintain the fit to the buttocks. Sex.

In such an absorbent article, wherein In the central region, a pair of first side press portions are provided on both sides of the center line, and a pair of the second low-weight regions are provided on the both sides in the rear side region. In the two side press sections, it is desirable to have no press section in the intermediate zone.

According to such an absorbent article, since the press portion is not provided in the intermediate portion, the first side press portion and the second side press portion are separated in the front-rear direction, so that the deformation of the absorbent core in the center region can be more effectively suppressed. The effect of deformation of the absorbent core in the side field. Further, on both sides of the second low basis weight region, a pair of second side press portions extending in the front-rear direction are provided. The second side press portion becomes a deformation base point of the absorbent core because of relatively high rigidity. The second low basis weight region sandwiched between the pair of second side press portions is more likely to bulge toward the body side of the wearer. Thereby, the wearer's body is more compliant, and the wearer can give a comfortable fit. In the side portion of the absorbent core in the center region, the rigidity of the first side press portion is increased, and the center portion in the widthwise direction is likely to be convex toward the drain opening of the wearer with respect to the side portion of the absorbent core.

Further, since the intermediate portion is not provided with the press portion, the rigidity is relatively low. Therefore, when the force in the twisting direction is applied to the absorbent article, the pair of first low basis weight regions are easily deformed. Therefore, the absorbent article can be twisted and deformed by following the movement of the legs. Therefore, by absorbing the deformation of the front side region by the first low basis weight region, the rear side region can be continued more continuously along the buttocks, and leakage can be suppressed.

In such an absorbent article, wherein The length of the first low basis weight region in the front-rear direction is preferably 10 mm or more and 50 mm or less at the position of the outer edge of the first low basis weight region.

According to such an absorbent article, since the length of the outer edge of the first low basis weight region in the front-rear direction is 10 mm or more, the deformation of the central region and the deformation of the rear side region can be effectively separated. Further, since the length in the front-rear direction of the outer edge of the first low basis weight region is 50 mm or less, the deformation of the body can be absorbed by the first low basis weight region, and the back side region absorbs the flow to the buttock side. Body fluids. The user does not easily feel the uneasiness of the menstrual blood flowing to the buttocks side, and the sense of security at the time of installation can be obtained.

In such an absorbent article, the back side region has a hip flap that extends outward in the width direction from the outer edge of the absorbent core in the center region.

According to such an absorbent article, not only the side portion of the core but also the hip flap is pushed down when it is used. Therefore, the absorbent core of the rear side domain is more likely to bulge with the second low basis weight region as a vertex. Therefore, it is easier to obtain an effect of suppressing leakage in the buttocks by arranging the absorbent core along the buttocks of the wearer.

In the absorbent article, the length of the outer edge of the first low basis weight region in the front-rear direction is longer than the length of the inner edge of the first low basis weight region in the front-rear direction, and the first low base The length in the front-rear direction of the heavy region is preferably longer as the outer side in the wide side direction becomes longer.

According to such an absorbent article, the length of the outer edge of the first low basis weight region in the front-rear direction is longer than the inner edge of the first low basis weight region. The length in the front-rear direction is longer. Therefore, when the absorbent core is subjected to a twisting force, the movable domain of the absorbent core is widened, and the absorbent core can further follow the body deformation. Further, the first low basis weight region is formed in a pair on the right and left sides, and the shape of the first low basis weight region is a tapered shape that is tapered toward the inner side in the width direction. Therefore, the imaginary line extending the outer edge extending inward in the width direction of the first low basis weight region on the left and right sides has a substantially X shape. The absorbent core is easy to move in the rotational direction with the center in the width direction as a fulcrum, and it is easy to follow the movements of the front and rear legs.

In such an absorbent article, it is desirable that the second low basis weight region intersects with an imaginary line connecting the rear end edges of the first low basis weight region.

According to such an absorbent article, since the second low basis weight region intersects with the imaginary line connecting the first low basis weight region, the deformation of the absorbent core is easily propagated to the second lowest point based on the first low basis weight region. Basis weight area. Further, the second low basis weight region is the apex, and the convexly deformed portion is positioned between the pair of first low basis weight regions, and receives the force from the wearer's leg via the first low basis weight region. Therefore, when the rear side of the second low basis weight region receives the force from the outer side in the width direction toward the inner side in the widthwise direction via the first low basis weight region, the second low basis weight on the virtual line connecting the first low basis weight region The area is the fulcrum moving left and right. Compared with the structure in which the second low basis weight region is freely movable in the broad side direction, the movement of the front side of the second low basis weight region can be restricted, the distortion of the absorbent core can be suppressed, and leakage of the body fluid can be suppressed.

In such an absorbent article, which has a fold line for folding the absorbent article, It is preferable that the first low basis weight region is disposed in a region where the fold line is not provided.

According to such an absorbent article, since the first low basis weight region is disposed in a region where no fold line is present, the folding habit is not formed in the first low basis weight region, and the absorbent core can be based on the first low basis weight region. Deformation.

In such an absorbent article, the rear end edge of the second low basis weight region may be located further forward than the rear end edge of the absorbent core.

According to such an absorbent article, the absorbent core is disposed further rearward than the second low basis weight region, and since the second low basis weight region is not formed, it does not bulge toward the wearer side. Behind the body's sulcus is the sacral periphery, which is a relatively flat shape. The portion that abuts the periphery of the sacrum becomes a flat shape, and the rear end edge of the absorbent core fits over the wearer's body.

In such an absorbent article, the rear end edge of the second low basis weight region may be located at the rear end edge of the absorbent core.

According to such an absorbent article, the absorbent core in the rear side region is divided by the second low basis weight region on the right and left sides, and the single absorbent core sandwiching the second low basis weight region is moved by the alternate operation of the legs. Therefore, by moving the movement of the body by the single absorbent core sandwiching the second low basis weight region, the other absorbent core can be continuously attached to the body.

===Absorbent article of the present embodiment ===

Hereinafter, the absorbent article of the embodiment will be described with reference to the drawings. Bright. The absorbent article may be any absorbent article such as a sanitary pad (discrete sheet), a sanitary napkin, an incontinence pad, or the like. In the following embodiments, a disposable sanitary napkin as an example of an absorbent article will be described.

In addition, in the description of the following drawings, the same or similar symbols are denoted by the same or similar parts. However, the figure is a schematic, and it is necessary to pay attention to the case where the ratio of each size is different from the actual one. Therefore, the specific dimensions and the like must be judged by referring to the following description. Further, even if the drawings face each other, they may include portions having different dimensional relationships and ratios.

(1) The overall structure 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 opposite side of Fig. 1. Fig. 3 is a cross-sectional view of the absorbent article taken along line A-A of Fig. 1; Fig. 4 is a cross-sectional view of the absorbent article taken along line B-B of Fig. 1.

The absorbent article 1 has a front-rear direction L, a widthwise direction W, and a thickness direction T. The front-rear direction L is a direction extending from the front side (ventral side) of the wearer toward the rear side (back side) or a direction extending from the rear side of the wearer toward the front side. The widthwise direction W is a direction orthogonal to the front-rear direction L. The thickness direction T is a direction extending from the skin surface side T1 of the wearer toward the non-skin surface side T2, and is a direction orthogonal to the front-rear direction L and the widthwise direction W. The skin side T1 is equivalent to the side facing the wearer's skin when in use. The non-skin side T2 corresponds to the side opposite to the skin side T1 when it is used, that is, the side opposite to the skin of the wearer.

The absorbent article 1 has a central domain S1, a front side domain S2, a rear side domain S3, and an intermediate domain S4. The central region S1 is a region including the center in the front-rear direction of the region opposite to the drain (for example, the vaginal opening) of the wearer. The central domain S1 is located in the lower part of the undergarment when the absorbent article is attached to the undergarment. That is, the central domain is disposed under the arm of the installer, that is, the area disposed between the legs of the installer.

The front side domain S2 is located on the front side more than the center domain S1. The front end edge of the front side region S2 defines the front end edge of the absorbent article 1. The rear side domain S3 is located on the rear side more than the intermediate domain S4. The rear end edge of the rear side region S3 defines the rear end edge of the absorbent article 1. The length of the front-back direction L of the rear side domain S3 may be longer than the length of the front-back direction L of the center domain S1.

The intermediate domain S4 is located further rearward than the central domain S1 and further forward than the rear domain S3. The intermediate domain S4 is an area including the rear end edge of the fin 3 to be described later. The front end edge of the intermediate portion S4 is the front end edge of the first low basis weight region 41 to be described later, and the rear end edge of the intermediate portion S4 is the rear end edge of the first low basis weight region 41.

A flap 3 may be provided in the central domain S1. Further, the hip region 4 which is bulged outward in the widthwise direction W may be provided in the rear side region S3. The hip blade 4 is extendable outward in the widthwise direction than the outer edge of the absorbent core of the center region S1. The front end edge of the flap 3 is defined by the root portion of the flap 3 and is located on the front side of the two portions which are recessed toward the inner side in the most wide direction W. The front end edge of the flap 3 may also define a boundary between the central domain S1 and the front side domain S2. The rear end edge of the flap 3 is regulated by the root of the flap 3 It is a portion located on the rear side of the two portions which are recessed toward the inner side in the most wide direction W.

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 surface side T1 more than the absorbent body 30. The non-skin surface sheet 20 is provided on the non-skin side T2 more than the absorber 30. The absorbent body 30 is provided between the skin surface sheet 10 and the non-skin surface sheet 20.

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

The side sheet 12 covers the outer edge of the surface sheet 11 in the widthwise direction W, and extends outward from the surface sheet 11 in the widthwise direction W. The side sheets 12 may be composed of the same material as the surface sheets 11. The side sheets 12 can be disposed on the outer edges of the absorbent body 30 in the wide-side direction W, the flaps 3, and the hip-wings 4. The non-skin sheet 20 is a liquid impermeable sheet.

The inner edge of the side sheet 12 is folded outward in the front-rear direction L toward the widthwise direction W. In the present specification, the state along the front-rear direction means that the state is parallel to the front-rear direction, and the state along the widthwise direction means a state in which the direction is parallel to the widthwise direction. A stretchable member 91 that expands and contracts in the front-rear direction L is disposed between the folded side sheets 12 . Inner edge of side sheet 12 and stretchable member 91 is a leak-proof side that constitutes a standing. The rising point of the leakage preventing side is a rear end edge of the elastic member 91, a front end edge of the elastic member 91, and a region outside the widthwise direction of the elastic member in the side sheet.

The absorber 30 is disposed at least in the central domain S1, the intermediate domain S4, and the rear domain S3. The absorbent body 30 has an absorbent core 31 containing an absorbent material that absorbs liquid, and a core cladding 32 that surrounds the absorbent core 31. The core clad layer 32 may cover the absorbent core 31 at least on the skin side of the absorbent core 31. The absorbing material constituting the absorbent core 31 can be formed, for example, of a hydrophilic fiber, a pulp, and a superabsorbent polymer (SAP). The core cladding layer may be composed of, for example, a nonwoven fabric or a tissue sheet.

The flap 3 and the hip flap 4 extend outward in the width direction W from the outer edge of the absorbent core 31 in the center region S1. The wing portion 3 and the hip portion 4 are formed by laminating the side sheet 12 and the non-skin sheet 20. The flap 3 is configured to be foldable toward the non-skin surface sheet 20. The flap 3 is folded over to the non-skin side of the crotch portion of the undergarment during use. The hip wing 4 is located on the rear side of the flap 3 and is disposed in the rear side domain S3. The hip blade 4 is not folded over during use and is disposed between the undergarment and the buttocks of the wearer.

The measurement of the "thickness 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, a sample which is taken out from the package and placed in an environment of 20° C.±2° C. and a relative humidity of 60%±5% RH for 12 hours is used.

The measurement position is the central portion of the width direction of the product of the absorbent core. At the time of measurement, the absorbent article is not in a state of being retracted, but is measured while the stretchable member of the absorbent article is stretched. Further, portions other than the absorbent core such as the skin surface sheet other than the absorbent core and the non-skin surface sheet are removed. A needle gauge gauge PEACOCK manufactured by Ozaki Seisakusho Co., Ltd. was used, and a test piece having a diameter of 10 mm was prepared on the gauge head, and a test piece having a size of 30 mm × 30 mm was prepared, and the thickness of the test piece was measured. The measuring instrument was adjusted to a measuring pressure of 3 g/cm ² with respect to the test piece. Here, the above measurement was performed on various samples in 10 states, and the average value was used 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, a sample which is taken out from the package and placed in an environment of 20° C.±2° C. and a relative humidity of 60%±5% RH for 12 hours is used.

The absorbent article packaged in the package unpacks the package, unfolds the folded absorbent article, and measures the thickness and area of the portion of the basis weight and density. Next, the portion where the basis weight and the density were measured was cut out from the absorbent article to measure the weight of the cut portion.

Next, the portions other than the absorbent core such as the skin surface sheet and the non-skin surface sheet were removed from the cut portions, and the weight of the absorbent body was measured. The basis weight was calculated from the weight of the absorber and the area of the portion where the basis weight and density were measured. The density is calculated based on the basis weight and thickness.

In addition, 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 in such a state, it is 20 ° C ± 2 ° C, and the relative humidity is 60% ± A sample placed after 12 hours in a 5% RH environment. Then, a spring gauge (belt: polyvinyl chloride coated with glass fiber) manufactured by Affinity Co., Ltd. was used, and the length of this state of the measurement target portion was measured along the measurement target portion. Here, the above measurement was performed on various samples in 10 states, and the average value was used as the length.

(2) Detailed structure of the absorber

Next, the structure of the absorber 30 will be described more specifically. The absorbent core 31 has a mid-high portion 33 at least in the central region S1. The middle portion 33 can also extend from the central domain S1 toward the front side domain S2. The middle portion 33 is disposed across the center line CL in the center domain S1. The center line is a line connecting the center of the broad side direction of the absorbent article and is parallel to the front-rear direction. The middle portion 33 refers to a region thicker than the outer edge of the absorbent core. 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 region other than the middle-high portion 33 in the central region S1, and is higher than the first low-weight region 41 of the pair in the intermediate region S4. The area between the areas has a higher basis weight. Preferably, the thickness of the absorbent core between the first low basis weight regions 41 and the thickness of the absorbent core 31 on the rear side of the first low basis weight region 41 are thinner than the thickness of the intermediate portion 33. More desirably, the thickness of the absorbent core 31 as a whole of the rear side region S3 is thinner than the thickness of the middle portion 33. Since the thickness of the middle portion 33 is relatively thick, it is easy to fit on the drain of the installer. On the other hand, since the thickness of the absorbent core of the rear side region S3 is relatively small, the rigidity of the rear side region S3 is relatively low, so that it is easy to follow the movement of the legs of the wearer, and the feeling of discomfort when the leg is moved can be reduced. Further, if the basis weight of the absorbent core is relatively high, the absorbent core is easily twisted. By, The basis weight of the absorbent core between the first low basis weight regions 41 and the basis weight of the absorbent core 31 on the rear side of the first low basis weight region 41 is low, and the absorbent core in the buttock side of the wearer is less likely to be distorted. . The rear end edge of the middle portion 33 is the front end edge of the first low basis weight region 41. The front end edge of the middle portion 33 is adjacent to the first side press portion 81 to be described later. The middle portion 33 is surrounded by the first side press portion 81.

The absorber 30 has a first low basis weight region 41 and a second low basis weight region 42. Here, the "low basis weight region" means a region formed by the absorbent core 31 having a lower basis weight than the surrounding absorbent core 31, or a region having no absorbent core 31. Thus, the "low basis weight region" is a concept including a region in which the basis weight of the absorbent core 31 is zero. In the wearer's sleeping position, the rear side of the absorbent article is placed directly under the buttocks of the wearer, that is, between the buttocks and the bed. Since the second low basis weight region formed in the rear side region has low rigidity, the sense of disobedience to the installer is small. Further, the absorbent material constituting the absorbent core by the first low basis weight region and the second low basis weight region is less likely to move between the central region, the right side portion of the rear side region, and the left side portion of the rear side region. Thereby, it is possible to suppress the local concentration of the absorbing material constituting the absorbent core in accordance with the operation during the loading. As a result, in the attachment of the absorbent article, the sense of dissatisfaction of the wearer can be alleviated. Therefore, the wearer is not easy to feel a sense of discomfort especially in a sleeping position.

The basis weight of the absorbent core 31 in the low basis weight regions 41 to 42 is preferably 60% or less of the basis weight of the absorbent core (excluding the middle and high portions) around the low basis weight regions 41 to 42, and more preferably 50% or less. . The basis weight of the first low basis weight region 41 and the base of the second low basis weight region in the present embodiment The weight is lower than the basis weight of the outer edge of the absorbent core in the back side domain S3.

When the absorbent core 31 does not have a region of "low basis weight region", the core cladding layer covers the entire absorbent core 31 across the low basis weight region. At this time, the absorber 30 can be integrally formed by the core cladding even if the absorbent core 31 is divided into a plurality of regions.

The first low basis weight region 41 and the second low basis weight region 42 are boundaries at which the rigidity of the absorber 30 is changed. Therefore, the first low basis weight region 41 and the second low basis weight region 42 correspond to a region where the absorber 30 is easily deformed.

The first low basis weight region 41 is provided in the intermediate domain S4. The pair of first low basis weight regions 41 each extend from the outer side edges of the absorbent core toward the inner side in the widthwise direction. The first low basis weight region suppresses the influence of the deformation of the absorber in the central region on the deformation of the absorber in the rear side region, and the absorbent article is easily deformed independently in the central region and the rear region. Therefore, the central region of the absorbent article is disposed along the shape of the armpit of the wearer, and the rear side region of the absorbent article can be disposed along the shape of the buttocks of the wearer. The first low basis weight region 41 is provided on the rear side more than the center 3LC of the fin 3 in the front-rear direction L, and is provided on the front side more than the rear side edge of the absorber 30. The first low basis weight region 41 is provided across the rear end edge of the wing portion 3 in the front-rear direction L. Since the first low basis weight region 41 is disposed at the rear end edge of the wing portion that becomes the base end portion of the wing portion in the front-rear direction, the first low basis weight region is divided and applied to the fin from the leg of the wearer. The force can inhibit the propagation of this force to the posterior domain. Since the first low basis weight region 41 is disposed at the rear end edge of the wing portion that becomes the base end portion of the wing portion in the front-rear direction, the leg portion of the wearer is cut off in the first low basis weight region 41. The force applied to the fins can suppress the propagation of the force to the rear side domain S3. In this way, if the wearer walks while the absorbent article is attached to the body, a force in the twisting direction is applied to the central region held by the both legs. At this time, the pair of first low basis weight regions are each deformed, and the deformation due to the force in the twisting direction is absorbed in the first low basis weight region, and the deformation in the rear side region can be reduced. Therefore, in the rear side region, even if the central region moves largely due to the movement of the legs, it moves less than the central region, and the buttocks can continue along the buttocks.

The pair of first low basis weight regions 41 are separated in the broad side direction. Thereby, each of the central domain and the rear domain can be deformed left and right with the absorption core between the pair of first low basis weight regions as the center. Therefore, following the body of the wearer during walking, the absorbent article can be twisted and deformed to maintain the fit to the underarm and the buttocks and to suppress leakage. Further, since the central region and the rear side region are maintained in a state in which the body is adhered while walking, the wearer can obtain a so-called sense of security in which the absorbent article often continues along the body. An absorbent core is disposed between the pair of first low basis weight regions 41. The absorbent core between the pair of low basis weight regions is formed into a convex shape with the first low basis weight region 41 as a base point when being sandwiched by the legs of the wearer, and is bonded to the wearer's body. Further, since the absorbent core is disposed between the pair of first low basis weight regions 41, the body fluid can be guided from the central region S1 to the rear side region S3.

Further, in the present embodiment, the pair of first low basis weight regions 41 are separated in the broad side direction, and the central region S1 and the rear side region S3 are not completely divided. Since the absorption core is disposed between the pair of first low basis weight regions 41, the offset of the relative positions of the central region S1 and the rear side region S3 can be reduced. Therefore, from the night to the walk to the toilet, etc., the central domain The external portion of S1 and the rear side domain S3 is not easily offset, and it is possible to suppress the occurrence of a step in the thickness direction, and it is difficult to cause a sense of discomfort. Further, the positions of the central domain S1 and the rear side domain S3 are not easily shifted, and the central domain S1 and the rear domain S3 are easily disposed at positions suitable for the body.

The pair of first low basis weight regions 41 are disposed only in the intermediate domain S4 in the central domain S1, the rear domain S3, and the intermediate domain S4. That is, the first low basis weight region 41 is not provided in the central domain S1 and the rear domain S3. The first low basis weight region 41 is also not provided in the front side domain S2. More specifically, the first low basis weight region passes through the center 3LC of the front and rear direction of the fin, and is not disposed on a straight line extending in the widthwise direction, but is located further rearward than the center 3LC. The center domain S1 is gripped by the legs of the wearer and applies a force toward the inner side in the width direction. In particular, the force is applied to the center 3LC of the front and rear direction of the wing portion, and the absorbent core is attached to the wearer's body by the force bulging toward the inner side in the width direction. By shifting the first low basis weight region 41 with respect to the center 3LC of the front and rear direction of the flap, a force toward the inner side in the widthwise direction is applied to the center 3LC of the front and rear direction of the flap, and the center region S1 is not hindered from sticking. Synergy.

The pair of first low basis weight regions 41 are not provided in the central domain S1 and the rear domain S3. Since the low basis weight region is not formed in the central region S1, the side leakage in the central region S1 can be effectively suppressed. Further, it is possible to maintain the rigidity of the absorbent core in the center region and to suppress excessive deformation of the absorbent core in the center region when the absorbent core is sandwiched between the legs of the wearer, and it is possible to suppress unintentional deformation of the absorbent core in the center region. Moreover, the installer can obtain the sense of security that the body fluid can be absorbed by the central domain S1, and it is not uncomfortable to leak. Use absorbent items.

Further, since the first low basis weight region 41 is not formed in the rear side region S3, the outer edge of the absorbent core 31 in the rear side region S3 is not easily deformed, and is easily maintained as a deformation base point. Therefore, the center of the absorbent core 31 in the widthwise direction of the rear side region S3 is easily formed into a convex shape with the side portion of the absorbent core as a base point, and the absorbent core can be easily adhered to the groove, and the occurrence of leakage can be suppressed. Further, since the first low basis weight region 41 is not provided in the front side field S2, the force of the front side field S2 attached to the vaginal opening is prevented from running away, and the front side field S2 can be attached to the vaginal opening to prevent side leakage.

The length of the outer edge of the first low basis weight region 41 in the front-rear direction is longer than the length of the inner edge of the first low basis weight region 41 in the front-rear direction. The length of the first low basis weight region 41 in the front-rear direction is longer toward the outer side in the widthwise direction. Thereby, when the absorbent core is subjected to the twisting force, the movable region of the absorbent core is widened, and the absorbent core can further follow the body deformation. Further, the first low basis weight region is formed in a pair on the right and left sides, and the shape of the first low basis weight region is a tapered shape that is tapered toward the inner side in the width direction. Therefore, the imaginary line extending the outer edge extending inward in the width direction of the first low basis weight region on the left and right sides has a substantially X shape. The absorbent core is easy to move in the rotational direction with the center in the width direction as a fulcrum, and it is easy to follow the movements of the front and rear legs.

The first low basis weight region 41 is formed in three regions in which the absorbent article is divided into three equal parts in the front-rear direction, and may be provided in a centrally located region. By not providing the first low basis weight region 41 in the region on the front side of the three regions, the force of the front side region S2 attached to the vaginal opening is not allowed to run away, and the front side can be made The field S2 fits over the vaginal opening to prevent side leakage. Further, since the first low basis weight region 41 is not provided in the region on the rear side in the three regions, the outer edge of the absorbent core 31 in the rear side region S3 is not easily deformed, and is easily maintained as a deformation base point. Therefore, the center of the absorbent core 31 in the widthwise direction of the rear side region S3 is easily formed into a convex shape with the side portion of the absorbent core as a base point, and the absorbent core can be easily adhered to the groove, and the occurrence of leakage can be suppressed. The first low basis weight region 41 is provided in the range of the rear end edges of the wing portions 3 and the hip blades 4 in the front-rear direction. The central region S1 is fixed to the undergarment via the wing portion 3, and the rear side region S3 is fixed to the undergarment via the hip blade 4. Since the first low basis weight region 41 is provided in the range of the cross-blade 3 and the hip-wing 4, the function of both the operation of the buffer central domain S1 and the operation of the rear side domain S3 is exerted.

The length of the first low basis weight region 41 in the front-rear direction is preferably 10 mm or more and 50 mm or less, more preferably 10 mm or more and 30 mm or less, in the position of the outer edge of the first low basis weight region 41. Since the length of the first low basis weight region in the front-rear direction is 10 mm or more, the deformation of the central region and the deformation of the rear side region can be effectively separated. Further, since the length of the first low basis weight region in the front-rear direction is 50 mm or less, the body fluid can be absorbed by the back side region by the back side region while absorbing the body deformation by the first low basis weight region. It is not easy for the wearer to feel the uneasiness of the menstrual blood flowing to the buttocks side, and the sense of security at the time of installation can be obtained.

The stretchable member 91 constituting the leakage preventing side is disposed across the first low basis weight region 41 in the front-rear direction L. The region in which the stretchable member 91 expands and contracts in the front-rear direction is superposed on the first low basis weight region 41, and the contraction by the stretchable member 91 is easy to exert. Also, absorbent articles 1 When the action of the following leg is applied to the body, the first low basis weight region 41 is compressed or stretched. The stretchable member 91 is likely to be contracted when the first low basis weight region 41 is compressed, and is easily stretched when the first low basis weight region 41 is stretched. Even in the state in which the absorbent article 1 is twisted, the standing leakage preventing hem tends to follow the body, and the fit can be favorably maintained. In addition, by the contraction of the stretchable member 91, the central region S1 which is positioned on both sides in the front-rear direction with the first low basis weight region 41 interposed therebetween can be brought close to the rear side region S3. Therefore, even when wrinkles are generated in the intermediate domain S4 due to the deformation of the first low basis weight region 41, the wrinkles can be gathered.

The second low basis weight region 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 region 42 may extend in a straight line in the front-rear direction L. Since the second low basis weight region is formed in the rear side region, the center of the rear side region in the wide side direction is easily directed toward the wearer by the force from the outer side in the width direction of the absorbent article toward the inner side in the wide side direction. The body is outstanding. Thereby, the absorbent article can be deformed in the shape of the groove of the wearer in the sleeping posture in the rear side field. As a result, the wearer can obtain a comfortable fit with the absorbent article on the buttocks.

Further, the second low basis weight region 42 intersects with an imaginary line connecting the pair of first low basis weight regions 41. The imaginary line may be a line connecting any one of the first low basis weight regions, and specifically, a line connecting the rear end edges of the first low basis weight region. The second low basis weight region 42 extends forward beyond the imaginary line connecting the rear end edges of the left and right first low basis weight regions 41. The deformation of the absorbent core is easily propagated to the second low basis weight region based on the first low basis weight region. First low basis weight The deformation base point extending in the widthwise direction due to the field and the deformation base point extending in the front-rear direction due to the second low basis weight region are easily interlocked to form a position further reaching the depth of the sulcus. Further, the convex shape along the middle portion in the front-rear direction of the body and the second low-basic region are falsely connected, and the region capable of absorbing the body fluid is connected in the front-rear direction. Therefore, the body fluid adhering to the wearer's skin can be quickly absorbed, and the body fluid can be prevented from being transmitted to the skin surface, thereby reducing body fluid leakage. Further, the second low basis weight region is the apex, and the convexly deformed portion is positioned between the pair of first low basis weight regions, and receives the force from the wearer's leg via the first low basis weight region. Therefore, when the rear side of the second low basis weight region receives the force from the outer side in the width direction toward the inner side in the widthwise direction via the first low basis weight region, the second low basis weight on the virtual line connecting the first low basis weight region The area is the fulcrum moving left and right. Compared with the structure in which the second low basis weight region is freely movable in the broad side direction, the movement of the front side of the second low basis weight region can be restricted, the distortion of the absorbent core can be suppressed, and leakage of the body fluid can be suppressed.

The rear end edge of the second low basis weight region 42 is located on the front side more than the rear end edge of the absorbent core, and is located on the rear side in the center of the rear side domain S3 in the front-rear direction. In the cross section along the front-rear direction L of the wearer's body, the groove (groove) between the buttocks is present in the region from the more perineal portion to the tailbone, and the second low basis weight region abuts on the region. On both sides of the second low basis weight region 42, the basis weight of the absorbent core is higher than that of the second low basis weight region 42, and a region having high cushioning property is disposed. Both sides of the second low basis weight region 42 are softly abutted against the coccyx, and it is possible to prevent irritation to the wearer's skin. Further, the absorbent core is disposed further rearward than the second low basis weight region, and since the second low basis weight region is not formed, it does not bulge toward the wearer side. Comparable The groin of the body becomes the sacral periphery, which is a relatively flat shape. The portion that abuts the periphery of the sacrum becomes a flat shape, and the rear end edge of the absorbent core fits over the wearer's body.

In the region where the first low basis weight region 41 and the second low basis weight region 42 overlap, the constituent members constituting the absorbent article may not be joined to each other. Specifically, the surface sheet 11 may be not joined to the absorber 30, and the non-skin sheet 20 may be not joined to the absorber 30. By not joining the constituent members, the first low basis weight region 41 and the second low basis weight region 42 can be more flexibly deformed, and the absorbent article can easily follow the body deformation with respect to the body.

(3) Press section

The absorbent article 1 has at least a press portion 80 formed by pressing the absorbent core 31 in the thickness direction T. The region where the press portion is formed is a portion having a higher density than the region where the press portion is not formed. The press portion 80 is a portion having a higher density than a region where the press portion is not formed. The press portion 80 has a first side press portion 81 and a second side press portion 82 (see FIG. 1). The press section 80 is provided in the central domain S1, the front side domain S2, and the rear side domain S3, and is not provided in the intermediate domain S4. Therefore, the press portion is not provided in the first low basis weight region 41. According to such an absorbent article, since the press portion is not provided in the intermediate portion, the first side press portion and the second side press portion are separated in the front-rear direction, so that the deformation of the absorbent core in the center region can be more effectively suppressed. The effect of deformation of the absorbent core in the side field. Further, on both sides of the second low basis weight region, a pair of second side press portions extending in the front-rear direction are provided. First The 2-side press section becomes a deformation base point of the absorbent core because of its relatively high rigidity. The second low basis weight region sandwiched between the pair of second side press portions is more likely to bulge toward the body side of the wearer. Thereby, the wearer's body is more compliant, and the wearer can give a comfortable fit. The side portion of the absorbent core in the center region is increased in rigidity by the first side press portion, and the center portion in the widthwise direction is likely to be convex toward the drain opening of the wearer with respect to the side portion of the absorbent core. Further, since the intermediate portion is not provided with the press portion, the rigidity is relatively low. Therefore, when the force in the twisting direction is applied to the absorbent article, the pair of first low basis weight regions are easily deformed. Therefore, the absorbent article can be twisted and deformed by following the movement of the legs. Therefore, the deformation of the front side region is absorbed by the first low basis weight region 41, so that the rear side region can continue to follow the buttocks, and leakage can be suppressed.

The first side press portion 81 is provided at least in the central region S1. The first side press portion 81 is formed by compressing the surface sheet 11 and the absorber 30 in the thickness direction T. The first side press portion 81 is disposed on both sides with the center line CL and the middle portion 33 interposed therebetween, and extends in the front-rear direction L. The first side press portion 81 defines the outer edge of the middle portion 33.

The first side press portion 81 is bent in the width direction W near the front end edge of the absorbent core 31, and is U-shaped continuously connected. Instead of the above configuration, the first side press portion 81 may be separately provided on both sides in the width direction W of the middle portion 33. In other words, the pair of first side press portions 81 may be separately provided in a form in which they are separated from each other. In this way, when the force of the absorbent article is applied from the outer side in the widthwise direction to the inner side in the widthwise direction, the force is easily transmitted to the middle and high portions via the first side press portion 81, and the middle and high portions are easily attached to the vaginal opening.

The second side press portion 82 sandwiches the second low base in the rear side region S3 The heavy area 42 is provided on both sides. The second side press portion 82 is separated from the second low basis weight region 42 and does not hinder the convex deformation due to the second low basis weight region. The second side press portion 82 extends in the front-rear direction L. The first side press portion 81 and the second side press portion 82 are separated in the front-rear direction. The first low basis weight region 41 is disposed between the first side press portion 81 and the second side press portion 82. Since the first side press portion and the second side press portion are separated in the front-rear direction, it is possible to more effectively suppress the influence of the deformation of the absorber in the center region S1 on the deformation of the absorber in the rear side. Further, since the second side press portion is provided on both sides with the second low basis weight region 42 interposed therebetween, the second low basis weight region sandwiched between the pair of second side press portions is more easily attached. The body side of the person is raised. The absorbent core is more conformable to the wearer's body, giving the wearer a comfortable fit.

(4) Adhesive area

As shown in Fig. 2, the absorbent article 1 has a first main body adhesive region 61 as a first adhesive region for holding the absorbent article 1 in the adhesive for the undergarment S, and a second main body adhesive region as a second adhesive region. Region 62, flap adhesion region 63 and hip pad attachment region 64. These adhesive areas 61 to 64 are provided on the non-skin side of the non-skin surface sheet 20.

The first body adhesion region 61 is disposed further in front than the second body adhesion region 62. The first body adhesion region 61 and the second body adhesion region 62 extend in the front-rear direction L. The first body adhesion region 61 is disposed apart from the second body adhesion region 62 in the front-rear direction L. The first body adhesion region 61 is located more front than the first low basis weight region 41 side. The second body adhesion region 62 is located further on the rear side than the first low basis weight region 41. A flap adhesive region 63 is provided on the flap 3. The hip-wing region 64 is provided on the hip blade 4. By separating the first adhesive region from the second adhesive region, it is easy to achieve deformation and operation in a region further forward than the first low basis weight region and a region behind the first low basis weight region. It is easier to match the shape of the wearer's body to a different shape in the central domain and the rearside domain.

It is preferable that the first low basis weight region 41 is disposed in a region in the thickness direction T that does not overlap the adhesion regions 61 to 64. More specifically, the first low basis weight region 41 is provided in a region between the first body adhesion region 61 and the second body adhesion region 62. It is preferable that the second low basis weight region 42 is disposed in a region in the thickness direction T that does not overlap the adhesion regions 61 to 64. More specifically, the second low basis weight region 42 is provided between the plurality of second body adhesion regions 62. Thereby, it is possible to suppress the deformation of the first low basis weight region and the deformation of the second low basis weight region by the underpants. The case where the force applied to the central region is transmitted to the rear side region can be suppressed by the first low basis weight region. Further, the first low basis weight region 41 and the second low basis weight region 42 can further function as a deformation base point. That is, the absorbent cores 31 adjacent to each other across the first low basis weight region 41 and the second low basis weight region 42 are easily operated independently of each other. Thereby, the absorber 30 is more easily attached to the shape of the armpit and the buttocks of the wearer. Therefore, it is possible to provide an absorbent article which is more conformable to the wearer's body and which can further impart a comfortable fit to the wearer.

It is preferable that the second side press portion 82 is provided in a region overlapping the second body adhesion region 62. The area where the second side press portion 82 is provided is stuck In the underwear. Thereby, when the absorbent core 31 is deformed based on the second side press portion 82, the second side press portion 82 can be supported by the undergarment. Since the second side press portion 82 which is the base point of the deformation is supported, it is easy to maintain the state in which the region between the second side press portions 82 is protruded.

(5) Absorbent articles in use

Next, the shape of the absorbent article in use will be described with reference to Figs. 5 to 7 . Fig. 5 is a schematic cross-sectional view of the absorbent article in use taken along line C-C of Fig. 1. Fig. 6 is a schematic cross-sectional view of the absorbent article in use taken along line D-D of Fig. 1. FIG. 7 is a view of the absorbent article in a state in which the undergarment is attached from the side opposite to the skin. In addition, FIGS. 5 and 6 are lines which express the shape of the body of the wearer by a two-dot chain line.

When the absorbent article 1 as a sanitary napkin is used, the absorbent article 1 is fixed to the undergarment S. The wearer pulls up the underwear in which the absorbent article is attached to install the absorbent article. By pulling up the undergarment, the central region S1 and the rear side region S3 of the absorbent article are pressed against the wearer's side via the undergarment, and are in close contact with the wearer's body. In this state, the center region S1 of the absorbent article 1 is sandwiched by the legs of the wearer and is received from the outer side in the wide side direction W toward the inner side in the wide side direction W. force.

The cross-sectional shape of the body of the wearer along the widthwise direction W of the absorbent article 1 is different from the vicinity of the buttocks in the vicinity of the underarm. Specifically, the cross-sectional shape of the body near the armpit of the wearer (near the vaginal opening from the blood) is the labia majora depression, from the side toward the absorbent article 1 The shape of the depression. In the armpit field of the installer, the central domain S1 of the absorbent article is disposed opposite. Under the armpit of the wearer, the absorbent core 31 of the center region S1, particularly along the body-arranged middle portion 33, can suppress leakage of bodily fluids in the underarm (see Fig. 5).

It is located at the rear of the perineum at the rear of the larger labia of the wearer, where the anus and the sulcus are located. The cross-sectional shape of the body near the rear of the perineal portion is a shape in which the center of the broad side is concave. The back side field S3 of the absorbent article is disposed opposite to the buttocks of the wearer.

A second low basis weight region 42 extending in the front-rear direction L along the center line CL is formed in the rear side region S3. Further, the absorbent core of the rear side region S3 is a side portion of the absorbent core which is pushed down by the left and right buttocks. At this time, since the hips are provided, not only the side portions of the core but also the hips are pushed down. Therefore, the absorbent core of the rear side domain is more likely to bulge with the second low basis weight region as a vertex. The center of the rear side region S3 in the wide side direction W is easily protruded toward the body of the wearer by the force from the outer side to the inner side of the absorbent article (see FIG. 6). Thereby, the absorbent article 1 can be deformed in the rear side domain S3 in accordance with the shape of the groove of the wearer. As a result, the wearer can obtain a comfortable feeling of adhesion to the absorbent article 1 on the buttocks. Further, the absorbent core is disposed further rearward than the second low basis weight region, and since the second low basis weight region is not formed, it does not bulge toward the wearer side. Behind the body's sulcus is the sacral periphery, which is a relatively flat shape. The portion that abuts the periphery of the sacrum becomes a flat shape, and the rear end edge of the absorbent core fits over the wearer's body.

Here, the shape of the body of the absorbent article 1 to be fitted to the wearer in the center domain S1 and the rear side domain S3 is changed to a different shape. First low base The heavy region 41 suppresses the influence of the deformation of the absorber 30 in the central region S1 on the deformation of the absorber 30 in the rear side region S3. That is, the absorbent article is easily deformed independently in the central region S1 and the rear region S3 by the first low basis weight region 41.

Moreover, the absorbent article configured as described above is deformed in response to the movement of the wearer's leg in the mounted state. Fig. 7 shows a modified form of the absorbent article when the wearer alternately moves the legs. Fig. 7(a) shows a state in which the positions of the legs of the wearer are aligned in the front-rear direction. From the state shown in Fig. 7(a), if the left leg on the left side of Fig. 7 is extended to the front of the right leg, the center field S1 is pushed toward the right front by the left leg to become Fig. 7 (b). ) The state shown. Further, from the state shown in Fig. 7(a), if the right leg on the right side of Fig. 7 is extended to the front of the left leg, the center region S1 is pushed toward the left front by the right leg to become Fig. 7 (c) The state shown.

As shown in FIG. 5 and FIG. 6, when the absorbent article is attached to the body, if the wearer walks, the legs alternately move, and the force is applied in the twisting direction of the product. At this time, the shape of the convex fit can be maintained by the force of the twisted buffer located on both sides.

More specifically, in a state where the legs of the installer are not moved, as shown in FIG. 5, the central domain S1 is attached to the armpit of the installer, as shown in FIG. 6, the rear side domain S3 is fitted. The user's gutter. In this state, if the user moves the leg, the center region S1 sandwiched by the leg receives the force in the twisting direction in response to the front and rear movement of the leg. Specifically, the absorbent article is biased from the leg of the wearer, and is easily applied to the center region S1, particularly the center 3LC of the wing portion in the front-rear direction. The central domain S1 of the absorbent article, especially the front of the flap The center 3LC in the rear direction applies a force along the broad side. At this time, the rear side domain is attached to the body, and since the rigidity of the region between the first low basis weight regions of the pair is relatively low, the central region is centered on the region between the pair of first low basis weight regions. Swing left and right. Therefore, the central region S1 is twisted left and right around the region between the pair of first low basis weight regions. Further, not only when walking, when the wearer turns over in a sleeping state, the body bends, and a force in the twisting direction is applied to the center domain S1 and the rear side domain S3. Therefore, the absorbent article can be twisted and deformed in response to the movement of the leg, and can follow the movement of the body.

At this time, since the first low basis weight region 41 has low rigidity due to the comparative basis weight, it is compressed or elongated. By the deformation of the first low basis weight region, it is possible to suppress the deformation of the central region S1 from being transmitted to the rear side region S3. For example, as shown in FIGS. 7(b) and 7(c), when the front end edge of the center region S1 is largely swung left and right with the absorption core between the pair of first low basis weight regions 41 as the center, the first left and right are low. The basis weight regions are each deformed to absorb deformation of the central domain. Therefore, even if the front end edge of the center domain S1 is greatly swung left and right, the rear side domain can be continued along the body. Similarly, the first low basis weight region 41 can suppress the deformation of the rear side domain S3 from being transmitted to the central domain S1. Therefore, the central domain S1 and the rear side domain S3 do not buffer each other, and each can continue to follow the body.

(6) Modifications

Next, an absorbent article 1A according to a modification of Fig. 8 will be described. In the description of the modifications, the same components as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted. The first low of the first modification The basis weight region 41 is formed by a cut. Even in the first low basis weight region formed by the incision, the effect of breaking the operation of the absorbent core in the central region and the rear side region and the deformation of the absorbent article by twisting can be achieved.

The trailing edge of the second low basis weight region 42 is at the rear end edge of the absorbent core. Therefore, the region between the rear end edge of the absorbent core in the front-rear direction and the front end edge of the second low basis weight region is divided by the second low basis weight region.

The rear end edge of the second low basis weight region 42 is divided into the right and left edges at the rear end edge of the absorbent core 31, and the absorbent core 31 of the rear side region S3 is easily moved to the left and right to follow the body. For example, when the wearer walks, the left and right feet are alternately moved. As the foot moves, the buttocks move alternately left and right. When the width direction of the absorbent core 31 of the rear side field S3 is integrated and the whole is integrated, the entire absorbent core 31 of the rear side field S3 moves to the left and right due to the alternate movement of the feet, and the feeling of adhesion in the buttocks is unstable. .

The absorbent core 31 of the rear side region S3 is divided by the left and right by the second low basis weight region 42, whereby the single absorbent core 31 of the second low basis weight region 42 is moved in accordance with the alternate operation of the feet. . Therefore, the single absorbent core 31 sandwiching the second low basis weight region 42 tracks the movement of the body, so that the other absorbent core 31 can continue to adhere to the body.

Moreover, the absorbent article 1A of the modification has a folding line for folding the absorbent article. The absorbent article according to Modification 1 has a front-back fold line FL along the front-rear direction and wide-width fold lines F1 to F3 along the width direction. The fold line is a fold line when individually wrapped. The first low basis weight region 41 is disposed without the front and rear fold lines FL and along the broad side direction The area of the wide-edge line F1~F3. Since the first low basis weight region 41 is disposed in the region where the fold line is not provided, the folding habit is not formed in the first low basis weight region 41, and the function as the deformation base point due to the first low basis weight region 41 can be continuously exhibited. .

Further, since the fold line is not provided in the first low basis weight region 41, the folding habit is not formed in the first low basis weight region, and the absorbent core can be deformed based on the first low basis weight region. More specifically, it is possible to suppress the rigidity of a part of the first low basis weight region from being increased due to the fold line. For example, when the fold line is provided in the first low basis weight region 41, since the fibers of the portion where the fold line is provided are dense, when the absorbent article is biased, the force is easily concentrated in the dense portion. Therefore, there is a concern that the densed portion becomes a deformation base point and the absorption core is aliased. However, since the fold line is not provided in the first low basis weight region 41, it is possible to suppress the case where the deformation base point is not provided. The absorbent core is deformed by the first low basis weight region 41 as a base point, and the effect of continuously adhering to the sulcus can be exhibited, and the occurrence of leakage can be suppressed.

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

In addition, the entire contents of Japanese Patent Application No. 2016-17139, filed on Feb. 1, 2016, are hereby incorporated by reference.

[Industrial availability]

It is possible to provide an absorbent article that improves the fit of the wearer's buttocks and suppresses leakage of excrement.

1‧‧‧Absorbables

3‧‧‧ wing

Center of the direction of 3LC‧‧‧

4‧‧‧ hip wing

10‧‧‧Skin sheet

11‧‧‧Surface

12‧‧‧ side flakes

30‧‧‧Acceptor

31‧‧‧Absorbent core

33‧‧‧High and Medium Department

41‧‧‧1st low basis weight area

42‧‧‧2nd low basis weight area

80‧‧‧Squeeze Department

81‧‧‧1st side press section

82‧‧‧2nd side press section

91‧‧‧Flexible components

CL‧‧‧ center line

W‧‧‧Broadside direction

S1‧‧‧Central Domain

S2‧‧‧ front side domain

S3‧‧‧ Back side domain

S4‧‧‧ intermediate domain

Claims (10)

An absorbent article having: a front-back direction and a broad-side direction orthogonal to each other; a central region opposite the drain of the wearer; a rear-side region opposite the buttocks of the wearer; An intermediate region between the rear side domain and the absorbent core disposed in the central domain, the rear side domain, and the intermediate domain, wherein the absorbent core has two absorbent cores a pair of first low basis weight regions each extending outward in the widthwise direction and a second low basis weight region extending in the front-rear direction along a center line connecting the centers of the widthwise directions in the rear side region The basis weight of the first low basis weight region and the basis weight of the second low basis weight region are lower than the basis weight of the outer edge of the absorbent core in the rear side region, and the first low basis weight of the pair The regions are separated in the wide-side direction, and are disposed only in the intermediate region in the central region, the rear region, and the intermediate region. The absorbent article according to claim 1, wherein the non-skin sheet located on the non-skin surface side of the absorbent core is provided with an adhesive region for locking the absorbent article to the undergarment, and the first low The basis weight region and the second low basis weight region are disposed in a region in which the adhesion region is not overlapped in the thickness direction. Such as the absorption of the first or second item of the patent application scope In the central region, a pair of first side press portions are respectively provided on both sides of the center line, and the second low basis weight region is disposed on both sides of the rear side region. There is a pair of second side press sections, and no press section is provided in the intermediate zone. The absorbent article according to the first or second aspect of the invention, wherein the length of the first low basis weight region in the front-rear direction is 10 mm or more and 50 mm at a position of an outer edge of the first low basis weight region. the following. The absorbent article according to claim 1 or 2, wherein the rear side region has a hip flap extending outward from the outer edge of the absorbent core in the central region in the widthwise direction. The absorbent article according to the first aspect of the invention, wherein the length of the outer edge of the first low basis weight region in the front-rear direction is greater than the inner edge of the first low basis weight region. The length in the front-rear direction is longer, and the length in the front-rear direction of the first low basis weight region is longer toward the outer side in the width direction. The absorbent article according to the first or second aspect of the invention, wherein the second low basis weight region intersects with an imaginary line connecting the rear end edges of the first low basis weight region. The absorbent article according to claim 1 or 2, further comprising a fold line for folding the absorbent article, wherein the first low basis weight region is disposed in a region where the fold line is not provided area. The absorbent article according to claim 1 or 2, wherein the rear end edge of the second low basis weight region is located further forward than the rear end edge of the absorbent core. The absorbent article according to claim 1 or 2, wherein the rear end edge of the second low basis weight region is at a rear end edge of the absorbent core.