WO2023243416A1 - Absorbent article - Google Patents

Abstract

An absorbent article 1 is: affixed to a worn article 2, which is reusable cloth underwear to be worn around the periphery of the lower section of the body of a wearer H; and positioned between the worn article 2 and the wearer. The absorbent article 1 comprises a main body section 10 which is divided into a belly-side section 101, a back-side section 102, and a crotch section 103. The main body section 10 has a front surface sheet 11, a rear surface sheet 12, an absorbent core 13a, and leg gathers 15. The leg gathers 15 are provided along the outside end section 10a of the main body section 10 in the widthwise direction W, and at least contract in the lengthwise direction L in the crotch section 103. The leg gathers 15 have a suppression means for suppressing the force with which crotch leg gathers 151, which are the leg gathers 15 positioned in the crotch section 103, pull inward in the widthwise direction W as a result of movement by the thigh section H1 of the wearer H.

Description

absorbent articles

The present disclosure relates to absorbent articles.

Conventionally, diapers (absorbent articles) that are used by being attached to the inside of wearing articles such as cloth underwear are known. For example, Patent Document 1 discloses a configuration in which a diaper and a diaper cover having substantially the same shape as the diaper are used in combination.

Japanese Patent Application Publication No. 8-215229

Recently, from the perspective of SDGs, the need for reusable wearable articles as described above is increasing. However, such worn articles require washing if they are contaminated with the wearer's excrement, which places a heavy burden on the assistant who nurtures or cares for the wearer. Therefore, in order to suppress the side leakage of excrement from absorbent articles and prevent excrement from adhering to worn articles, absorbent articles (specifically, the leg gathers of absorbent articles) should be made as large as possible. It is possible to do so. However, since the worn article and the absorbent article are constructed as separate bodies, when used for a long time, the leg gathers of the absorbent article that come into contact with the wearer's legs (mainly the inner part of the thigh) There is a possibility that the wearer's leg movement (for example, a leg-closing motion of closing the legs from an open state) may cause the wearer to be drawn into the wearer's crotch area without interlocking with the worn article. As a result, excrement tends to leak sideways from the leg gathers of the absorbent article, and there is a risk that the worn article (for example, the leg portion that covers the leg gathers) may be soiled by the excrement.

Therefore, one aspect of the present disclosure aims to provide an absorbent article that is used in combination with a wearing article and can suppress the occurrence of stains on the wearing article.

An absorbent article according to one aspect of the present disclosure is attached to a wearable article that is a reusable cloth underwear worn around the lower torso of a wearer, and is an absorbent article placed between the wearer and the wearer. A ventral part located on the ventral side of the wearer in the worn state when worn by the wearer together with the wearing article, a dorsal part located on the dorsal side of the wearer in the worn state, and a ventral part that is a sex article. and a crotch area located between the back and the dorsal side, and a liquid-permeable surface sheet that faces the wearer's skin in the worn state, and a liquid-permeable surface sheet that faces the wearer's skin in the worn state, and the body part is divided into A liquid-impermeable back sheet facing the front, an absorbent core that absorbs the wearer's excrement and is placed between the top sheet and the back sheet, and the ventral, crotch, and dorsal regions are lined up. Leg gathers are provided along the outer edge of the main body in the width direction perpendicular to the longitudinal direction and the thickness direction in which the top sheet and the back sheet overlap, and contract in the longitudinal direction at least in the crotch area. However, the leg gathers have a suppressing means for suppressing the force of the crotch leg gathers disposed in the crotch area of the leg gathers being pulled inward in the width direction by movement of the wearer's thighs.

According to the present disclosure, it is possible to provide an absorbent article that is used in combination with a wearing article and can suppress the occurrence of stains on the wearing article.

FIG. 1 is a plan view of the absorbent article according to the first embodiment, viewed from the skin side. FIG. 1 is a plan view of the absorbent article according to the first embodiment, viewed from the non-skin side. FIG. 2 is a schematic diagram of the cross-sectional structure of the absorbent article taken along line III-III in FIG. 1. FIG. FIG. 2 is a schematic diagram of the cross-sectional structure of the absorbent article taken along line IV-IV in FIG. 1. FIG. FIG. 2 is a plan view of the wearing article viewed from the skin side. FIG. 2 is a plan view of a wearing article to which an absorbent article is attached. It is a front view showing the state of an absorbent article and a wearing article in a wearing state. FIG. 7 is a plan view of an absorbent article according to a second embodiment as viewed from the skin side. FIG. 7 is a plan view of an absorbent article according to a modification of the second embodiment, viewed from the skin side. FIG. 7 is a plan view of an absorbent article according to a third embodiment viewed from the skin side.

At least the following aspects 1 to 23 will become clear from the description of this specification and the accompanying drawings.

(Aspect 1)
An absorbent article attached to a wearable article that is a reusable cloth underwear worn around the lower torso of a wearer and placed between the wearable article and the wearer, the absorbent article comprising:
A ventral part located on the ventral side of the wearer in the wearing state when worn by the wearer together with the wearing article, a dorsal part located on the dorsal side of the wearer in the wearing state, and the ventral part and a crotch portion located between the dorsal side portion, and a main body portion that is divided into:
The main body portion is
a liquid-permeable top sheet facing the wearer's skin in the worn state;
a liquid-impermeable back sheet facing the worn article in the worn state;
an absorbent core disposed between the top sheet and the back sheet and absorbing the wearer's excrement;
Along the outer edge of the main body in the width direction perpendicular to the longitudinal direction, which is the direction in which the ventral side part, the crotch part, and the back side part are lined up, and the thickness direction, in which the top sheet and the back sheet overlap. and leg gathers that are provided at least in the crotch area and contract in the longitudinal direction,
The leg gathers have suppressing means for suppressing the force of the inseam leg gathers arranged in the crotch region of the leg gathers being pulled inward in the width direction by the movement of the wearer's thighs.
Absorbent articles.

In aspect 1, the leg gathers are provided with a suppressing means that suppresses the force that pulls the inseam leg gathers inward in the width direction. This effectively prevents the inseam leg gathers from being drawn toward the wearer's groin side as the wearer's thighs move, reducing the risk of side leakage of excrement from the leg gathers. . As a result, it is possible to suppress the occurrence of stains on the worn article due to the side leakage.

(Aspect 2)
The suppressing means has a displacement prevention part that suppresses displacement of the leg gathers in the shear direction with respect to the wearing article.
Absorbent article according to aspect 1.

According to aspect 2, even if a force (pulling force) that pulls the leg gathers including the crotch leg gathers toward the wearer's crotch region occurs when the wearer performs a leg-closing motion, the anti-slip portion Movement of the leg gathers in the shear direction is suppressed. As a result, it is possible to generate a force (counterforce) that attempts to maintain the position of the leg gathers in the width direction against the above-mentioned tensile force. Thereby, it is possible to effectively prevent the crotch leg gathers from being drawn into the crotch area.

(Aspect 3)
The anti-slip portion is disposed outside the absorbent core in the width direction in at least one of the ventral side portion and the dorsal side portion.
Absorbent article according to aspect 2.

When the wearer performs a leg-closing motion, the portion of the leg gathers from the widthwise end of the main body to the absorbent core (i.e., the relatively thick rigid portion where the absorbent core is placed) The above-mentioned tensile force is more likely to occur in areas (areas that are more easily deformed than in areas where the deformation is higher). According to aspect 3, by providing the anti-slip portion in such a portion (that is, the outer portion of the absorbent core), the above-mentioned counterforce can be suitably generated in the portion. As a result, it is possible to effectively prevent the crotch leg gathers from being drawn into the crotch area.

(Aspect 4)
The anti-slip portion is arranged in a direction in the width direction that is smaller than an imaginary line passing through the center between the outer end of the main body in the width direction and the outer end of the absorbent core in the width direction and parallel to the longitudinal direction. placed on the outside,
Absorbent article according to aspect 2 or 3.

(Aspect 5)
The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
The leg side gathers have an upright fulcrum extending in the longitudinal direction inside the outer end of the leg gathers in the width direction,
The anti-slip portion is disposed on at least one of the ventral side portion and the dorsal side portion on the outside of the erecting support point in the width direction.
The absorbent article according to any one of aspects 2 to 4.

According to aspect 4 or aspect 5, by arranging the anti-slip portion at a certain level or more outside the leg gathers (i.e., outside the imaginary line or the standing fulcrum), the counterforce against the above-mentioned pulling force can be suitably applied. can be generated.

(Aspect 6)
The slip prevention part is arranged only on one of the ventral side part and the dorsal side part,
The absorbent article according to any one of aspects 2 to 5.

The leg gathers contract in the longitudinal direction at least in the crotch area. Further, the leg portion of the wearing article to which the absorbent article is attached may also be configured to shrink to some extent in the longitudinal direction in order to improve the feeling of wearing (fitting). For this reason, if the anti-slip parts are arranged on both the ventral part and the dorsal part, in order to attach the anti-slip parts on the ventral part and the dorsal part to appropriate positions on the worn article, It is necessary to fully stretch both the leg gathers and the worn article while accurately aligning them, which places a heavy burden on the wearer. In addition, when the leg gathers are fixed to the worn article at both the ventral and dorsal sides, the difference in the degree of expansion and contraction in the longitudinal direction of the leg gathers and the worn article may cause a situation where only one of the slip-stopping parts comes off from the worn article. There is a risk that this may occur. In this case, there is a risk that one of the slippage prevention parts may be re-fixed to the wearing article at an inappropriate position. As a result, for example, the leg gathers and the wearer's thighs do not come into close contact with each other, resulting in a gap between the leg gathers and the wearer's thighs, which may cause side leakage from the leg gathers. There is. On the other hand, according to the sixth aspect, the occurrence of the above-mentioned problem can be avoided by arranging the slippage prevention part only on one of the ventral side and the dorsal side of the leg gathers.

(Aspect 7)
A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
The slippage prevention part is arranged on the outer side of the contraction member in the longitudinal direction.
The absorbent article according to any one of aspects 2 to 6.

According to aspect 7, the above-mentioned counterforce can be suitably generated by arranging the anti-slip portion as far outside the leg gathers as possible (that is, outside the contraction member in the longitudinal direction). In addition, by arranging the anti-slip part so that it does not overlap the shrinkable member, it is possible to prevent the anti-slip part from contracting together with the shrinkable member. (adhesive surfaces) can prevent the adhesive surfaces from sticking together. Thereby, it is possible to improve convenience for the wearer when attaching the absorbent article to the wearable article.

(Aspect 8)
A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
At least a portion of the anti-slip portion is arranged to overlap the shrinkable member in the thickness direction when viewed from the longitudinal direction.
The absorbent article according to any one of aspects 2 to 7.

(Aspect 9)
A half or more portion of the anti-slip portion in the width direction is arranged to overlap with the shrinkable member in the thickness direction when viewed from the longitudinal direction.
Absorbent article according to aspect 8.

(Aspect 10)
The entirety of the anti-slip portion in the width direction is arranged so as to overlap the shrinkable member in the thickness direction when viewed from the longitudinal direction.
Absorbent article according to aspect 8 or 9.

The anti-slip portion that suppresses misalignment in the shearing direction is capable of applying force in the in-plane direction of the contact surface between the anti-slip portion and the worn article (i.e., the force applied to the anti-slip portion against the wearing article in a plane parallel to the longitudinal and width directions). While the resistance force against the force in the out-of-plane direction of the contact surface (i.e., the force that attempts to peel the anti-slip portion from the worn article) is relatively strong, It may be weak. According to any one of aspects 8 to 10, by arranging the slip prevention portion at a location where the contraction force in the longitudinal direction by the contraction member is likely to act, the displacement prevention portion is able to absorb the above-mentioned force in the out-of-plane direction more than the force in the out-of-plane direction. Force in the in-plane direction is more likely to occur. As a result, it is possible to suppress the occurrence of a situation in which the anti-slip portion unexpectedly comes off from the worn article.

(Aspect 11)
The suppressing means is provided at an outer end of the leg gather in the width direction, and has a recess formed to be depressed inward in the width direction when viewed from the thickness direction,
The narrowest part located innermost in the width direction of the recessed part is arranged in the inseam leg gathers,
The absorbent article according to any one of aspects 1 to 10.

According to aspect 11, by at least one of the following first to third effects, it is possible to effectively suppress the crotch leg gathers from being drawn into the crotch region.

(First effect)
The pulling force that pulls the inseam leg gathers towards the wearer's crotch area, which occurs when the wearer closes their legs, first occurs at the position farthest from the crotch area (i.e., at the outer edge in the width direction of the inseam leg gathers). . According to aspect 11, the outer end of the inseam leg gather can be brought closer to the wearer's crotch by the amount of the recess, so that the tensile force is first applied to the inseam leg gather (outer end in the width direction) during the leg closing action. The timing of action can be delayed. As a result, the total tensile force acting on the inseam leg gathers during the leg-closing motion can be reduced.

(Second effect)
Since the leg-closing motion is a rotational motion centered around the groin (fulcrum), it is thought that a larger pulling force (moment) is generated at a point farther from the groin. According to aspect 11, the outer end of the inseam leg gather can be brought closer to the wearer's crotch by the amount of the recess, thereby reducing the magnitude (maximum value) of the pulling force that initially acts on the inseam leg gather. be able to. This makes it possible to prevent the crotch leg gathers from entering the crotch region at the initial stage of the leg-closing motion where a particularly large pulling force occurs.

(Third effect)
It is believed that the above-mentioned tensile force is mainly generated along the normal direction of the outer end at each point of the outer end of the inseam leg gather. Therefore, in the case where the recess is not provided, a tensile force in the direction inward in the width direction is generated in the entire length of the outer end of the crotch leg gathers in the longitudinal direction. On the other hand, when the recessed portion is provided as in Aspect 11, the direction of the tensile force generated at each point of the outer end of the crotch leg gathers can be dispersed in a plurality of directions. As a result, the component of the tensile force acting on the entire crotch leg gather in the widthwise inward direction can be made smaller compared to the case where no recess is provided.

(Aspect 12)
The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
The leg side gathers have an upright fulcrum extending in the longitudinal direction inside the outer end of the leg gathers in the width direction,
The narrowest part of the recess is a virtual center that passes through the center in the width direction between the outermost part of the outer end of the leg gather in the width direction and the upright fulcrum and is parallel to the longitudinal direction. located inside the line in the width direction,
Absorbent article according to aspect 11.

According to aspect 12, by forming the concave portion relatively large and bringing the outer end of the crotch leg gathers as close as possible to the wearer's crotch area, the first to third effects described above can be suitably exhibited. .

(Aspect 13)
The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
The leg side gathers have an upright fulcrum extending in the longitudinal direction inside the outer end of the leg gathers in the width direction,
The narrowest part of the recess is a virtual center that passes through the center in the width direction between the outermost part of the outer end of the leg gather in the width direction and the upright fulcrum and is parallel to the longitudinal direction. located outside the line in the width direction;
Absorbent article according to aspect 11.

According to aspect 13, by forming the concave portion relatively small so that at least the narrowest portion is located outside the imaginary center line, the area of the inseam leg gathers is secured, and the lateral excrement from the leg gathers is The occurrence of leakage can be suitably suppressed.

(Aspect 14)
When viewed from the thickness direction, the outer end of the absorbent core in the width direction has a shape corresponding to the shape of the recess.
The absorbent article according to any one of aspects 11 to 13.

According to aspect 14, the shape of the outer end in the width direction of the absorbent core and the end in the width direction of the entire absorbent article (i.e., the outer end in the width direction of the leg gathers) are formed in a similar concave shape. Thereby, the distance in the width direction between the outer end of the crotch leg gathers and the outer end of the absorbent core can be made substantially uniform in the longitudinal direction. Thereby, the leg gathers can suitably fit the wearer's thighs. As a result, the occurrence of side leakage of excrement from the leg gathers can be suitably suppressed.

(Aspect 15)
A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
The suppressing means has a slit portion extending inward in the width direction from an outer end of the inseam leg gather in the width direction to at least partially separate the contraction member.
The absorbent article according to any one of aspects 1 to 14.

According to aspect 15, the crotch leg gathers can be separated into a plurality of parts in the longitudinal direction along with the contraction member by the slit portion. Thereby, when a tensile force is generated that pulls one part toward the groin region, other parts can be prevented from being pulled toward the groin region in conjunction with the one part. In other words, when a pulling force is generated in any part of the inseam leg gathers, the range of influence of the pulling force can be limited to that part, and transmission of the pulling force to other adjacent parts can be suppressed. . As a result, it is possible to effectively prevent the crotch leg gathers from being drawn into the crotch area.

(Aspect 16)
The suppressing means has a bending starting point located inward in the width direction from an outer end of the inseam leg gather in the width direction, and provided along the longitudinal direction.
The absorbent article according to any one of aspects 1 to 15.

According to aspect 16, when a tensile force is applied to the crotch leg gathers, it can be expected that the crotch leg gathers will break along the folding point before the entire crotch leg gathers are pulled toward the crotch area. As a result of such a bending action, the tensile force acting on the inseam leg gathers can be weakened. Thereby, it is possible to effectively prevent the crotch leg gathers from being drawn into the crotch area.

(Aspect 17)
The inseam leg gathers have a low-rigidity portion and a high-rigidity portion having higher rigidity than the low-rigidity portion,
The bending starting point is formed by a boundary between the low rigidity part and the high rigidity part,
Absorbent article according to aspect 16.

According to aspect 17, the bend starting point can be easily and reliably formed by the boundary between the low-rigidity portion and the high-rigidity portion.

(Aspect 18)
The bending starting point is constituted by an embossed part provided in the inseam leg gathers so as to extend along the longitudinal direction.
Absorbent article according to aspect 16.

According to aspect 18, the bending starting point can be easily and reliably formed by the embossed portion.

(Aspect 19)
A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
The contraction member functions as at least a part of the suppressing means by being configured as an integral sheet-like member having a width equal to or more than a certain width in the width direction.
The absorbent article according to any one of aspects 1 to 18.

According to aspect 19, the rigidity of the inseam leg gathers can be ensured by the contraction member configured as an integral sheet-like member. In addition, even if the crotch leg gathers are pulled toward the crotch area by the pulling force and the contraction member temporarily contracts in the width direction, when the pulling force weakens (for example, when the wearer closes the legs) (e.g., when the legs are opened again after the contraction is done), a restoring force is generated in the contractible member that tries to return to its original sheet-like shape. Thereby, it is possible to prevent the crotch leg gathers from being gradually drawn toward the crotch region (i.e., cumulative pulling) due to repeated leg-closing operations.

(Aspect 20)
The suppressing means has a bending starting point located inward in the width direction from an outer end of the inseam leg gather in the width direction and provided along the longitudinal direction,
The bending starting point is provided at least one of an inner side in the width direction than the shrinkable member and an outer side in the width direction than the shrinkable member,
Absorbent article according to aspect 19.

According to aspect 20, the effect of aspect 19 can be obtained, and the same effect as aspect 16 can be obtained.

(Aspect 21)
The leg gathers are
a high-rigidity part in which the contraction member is arranged;
a low-rigidity part that is provided at least one of an inner side in the width direction than the contraction member and an outer side in the width direction than the contraction member, and has a lower rigidity than the high-rigidity part;
The bending starting point is constituted by a boundary between the high rigidity part and the low rigidity part,
The shrinkable member is not arranged in the low-rigidity portion.
Absorbent article according to aspect 20.

According to aspect 21, a bending starting point can be easily and reliably formed at the boundary between the low-rigidity portion and the high-rigidity portion.

(Aspect 22)
The suppressing means has a slit portion extending inward in the width direction from an outer end of the inseam leg gather in the width direction to at least partially separate the contraction member.
The absorbent article according to any one of aspects 19 to 21.

When the crotch leg gathers are separated into multiple parts by the slits, each part is required to have a certain degree of rigidity in order to maintain the stability of each part. According to aspect 22, a portion of the sheet-shaped contraction member having relatively high rigidity is disposed in each portion separated by the slit portion, so that the rigidity of each portion can be ensured. Therefore, by providing the slit portions, the same effects as in embodiment 15 can be obtained while ensuring the stability of each portion separated by the slit portions.

(Aspect 23)
The suppressing means is provided at an outer end of the leg gather in the width direction, and has a recess formed to be depressed inward in the width direction when viewed from the thickness direction,
The narrowest part of the recess that is located innermost in the width direction is located outside of the contraction member in the inseam leg gathers in the width direction.
The absorbent article according to any one of claims 19 to 22.

When the area of the leg gathers (especially the inseam leg gathers) is reduced by the recess, the inseam leg gathers are required to have a certain degree of rigidity in order to maintain the stability of the inseam leg gathers. According to aspect 23, the relatively rigid contraction member formed in a sheet shape is arranged in the crotch leg gathers, so that the rigidity of the crotch leg gathers can be ensured. Therefore, by providing the recess while ensuring the stability of the crotch leg gathers, the same effect as in embodiment 11 can be obtained.

[Embodiment]
Embodiments of the present disclosure will be described in detail below with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and overlapping description will be omitted.

[First embodiment]
The structure of the absorbent article 1 according to the first embodiment will be described with reference to FIGS. 1 to 4. FIG. 1 is a plan view of the absorbent article 1 viewed from the skin side. FIG. 2 is a plan view of the absorbent article 1 viewed from the non-skin side. FIGS. 1 and 2 show a state in which the absorbent article 1 is stretched to a state where no wrinkles are formed (hereinafter referred to as the "stretched state"). 3 and 4 are diagrams schematically showing the cross-sectional structure of the absorbent article 1 taken along the III-III line and the IV-IV line in FIG. 1.

In this embodiment, the "wearer" is a person who wears the wearing article 2 to which the absorbent article 1 is attached. The "skin side" is the side that faces the wearer's skin when the absorbent article 1 is worn by the wearer together with the wearing article 2 (hereinafter referred to as the "wearing state"). The "non-skin side" is the side that faces away from the wearer's skin in the worn state.

Hereinafter, the longitudinal direction of the absorbent article 1 in the stretched state (see FIGS. 1 and 2) will be referred to as the "longitudinal direction L", and the lateral direction of the absorbent article 1 perpendicular to the longitudinal direction L will be referred to as the "width direction W". The direction perpendicular to the longitudinal direction L and the width direction W is represented as the "thickness direction T" (see FIGS. 3 and 4). The longitudinal direction L is a direction extending from the front side (ventral side) of the wearer's body to the back side (dorsal side) of the wearer's body in the worn state. The width direction W is a direction that coincides with the left-right direction of the wearer in the worn state. The thickness direction T is the direction in which materials (a top sheet 11, a back sheet 12, an absorbent core 13, etc., which will be described later) constituting the absorbent article 1 are laminated.

The absorbent article 1 is an absorbent article that is used in combination with a wearing article 2 (see FIGS. 5 to 7) that is worn around the lower torso of the wearer. The absorbent article 1 is, for example, a disposable diaper. The absorbent article 1 is attached to a wearing article 2 and placed between the wearing article 2 and the wearer. The wearing article 2 is a reusable cloth underwear.

The absorbent article 1 has a main body portion 10. As shown in FIGS. 1 and 2, the main body portion 10 has a rectangular outer shape when viewed from the thickness direction T in the extended state. The main body part 10 includes a ventral part 101 located on the ventral side of the wearer in the worn state, a dorsal part 102 located on the dorsal side of the wearer in the worn state, and the ventral part 101 and the dorsal part 102. The crotch area 103 is located in between. The ventral part 101, the crotch part 103, and the dorsal part 102 are arranged along the longitudinal direction L from the ventral side (front) to the dorsal side (backward) of the wearer. As an example, when the main body part 10 is divided into four equal parts in the longitudinal direction L, one region located most ventrally corresponds to the ventral part 101, and one region located most dorsally side corresponds to the ventral part 101. Two regions corresponding to the dorsal side part 102 and located between the ventral side part 101 and the dorsal side part 102 (that is, the central part in the longitudinal direction of the main body part 10) correspond to the crotch part 103.

The main body portion 10 includes a top sheet 11, a back sheet 12, an absorbent body 13, and a pair of side sheets 14. Each member, such as the top sheet 11, the back sheet 12, the absorber 13, and a pair of side sheets, may be joined using a known material such as an adhesive, for example.

The top sheet 11 is a liquid-permeable sheet that is placed on the wearer's skin side and faces the wearer's skin in the worn state. The top sheet 11 may be formed of, for example, a liquid-permeable nonwoven or woven fabric, a synthetic resin film having liquid-permeable holes, a composite sheet thereof, or the like.

The back sheet 12 is a liquid-impermeable sheet that is placed on the non-skin side of the wearer and faces the wearing article 2 in the worn state. The back sheet 12 may be formed of, for example, a liquid-impermeable nonwoven fabric, a synthetic resin film, or a composite sheet thereof. In this embodiment, the back sheet 12 includes a leak-proof sheet 12a and an exterior sheet 12b. The leak-proof sheet 12a is formed of a liquid-impermeable synthetic resin film. The exterior sheet 12b is formed of a liquid-impermeable nonwoven fabric, and is disposed outside the leak-proof sheet 12a.

The absorber 13 is arranged between the top sheet 11 and the leak-proof sheet 12a (back sheet 12). The absorbent core 13 includes an absorbent core 13a and a core wrap 13b that covers the absorbent core 13a. The absorbent core 13a is a member that absorbs the wearer's excrement, and has liquid absorbing and liquid retaining properties. The absorbent core 13a is, for example, a laminate of absorbent material comprising ground pulp or super absorbent polymer (SAP), or a mixture thereof. The core wrap 13b is, for example, tissue or a nonwoven fabric sheet.

The pair of side sheets 14 are arranged over the entire length in the longitudinal direction L so as to cover both sides of the top sheet 11 in the width direction W outside the center of the absorber 13 in the width direction W. The side sheet 14 is a liquid-impermeable sheet, and may be made of, for example, a hydrophobic nonwoven fabric.

As shown in FIG. 1, as an example in this embodiment, the absorbent core 13a is formed in a gourd shape (or hourglass shape) when viewed from the thickness direction T, and the absorbent core 13a has a gourd shape (or an hourglass shape). The center portion in the longitudinal direction L has a constricted shape. That is, the width (length in the width direction W) of the absorbent core 13a is maximum in a portion including both ends of the ventral side and the dorsal side, and in a portion including approximately the center portion in the longitudinal direction L of the absorbent core 13a. (the part located in the crotch area 103) is the minimum. Further, as shown in FIGS. 3 and 4, for example, the core wrap 13b has a constant width that is larger than the maximum width of the absorbent core 13a over the entire region along the longitudinal direction L. For example, the core wrap 13b is formed into a rectangular shape that includes the absorbent core 13a when viewed from the thickness direction T.

The main body portion 10 includes a pair of leg gathers 15 and a pair of leg side gathers 16. In the width direction W, the pair of leg side gathers 16 is located inside the pair of leg side gathers 16.

The leg gathers 15 are provided along the outer end 10a of the main body portion 10 in the width direction W. The leg gathers 15 are configured to contract in the longitudinal direction L at least in the crotch region 103. The leg gathers 15 are provided on the outside of the leg side gathers 16 across the standing fulcrum 16b of the leg side gathers 16, and extend along the longitudinal direction L from the abdominal part 101 to the dorsal part 102. As shown in FIGS. 3 and 4, the upright fulcrum 16b is constituted by an adhesive portion that adheres the side sheet 14 and the top sheet 11, which are common to the leg gathers 15 and the leg side gathers 16. In this embodiment, the leg gathers 15 are constituted by a portion between the outer end portion 10a and the upright fulcrum 16b over the entire area of the main body portion 10 in the longitudinal direction L.

A contraction member 152 is arranged in a portion of the leg gathers 15 that includes at least the crotch leg gathers 151 arranged in the crotch region 103. The contraction member 152 extends along the longitudinal direction L and contracts at least the crotch leg gathers 151 in the longitudinal direction L. The shrinkable member 152 has a width in the width direction W that is greater than or equal to a certain width. Moreover, the shrinkable member 152 is configured as an integral sheet-like member. For example, the shrinkable member 152 may be formed of a nonwoven fabric (stretchable nonwoven fabric) that is stretchable in the longitudinal direction L. Alternatively, the shrinkable member 152 is made up of a plurality of elastic members (for example, rubber threads) that are arranged apart from each other in the width direction W and extend in the longitudinal direction L, and a sheet member that covers the plurality of elastic members in a bag shape. may be formed.

A pair of leg side gathers 16 extend along the longitudinal direction L from the ventral side part 101 to the dorsal side part 102. Both ends of the leg side gathers 16 in the longitudinal direction L are fixed at the ventral side part 101 and the dorsal side part 102. More specifically, at both ends of the leg side gathers 16 in the longitudinal direction L, there are fixed regions B (rectangular hatched regions in FIG. 1) where the leg side gathers 16 and the top sheet 11 are fixed to each other. ) is provided. The leg side gathers 16 and the top sheet 11 are fixed (adhered) to each other in the fixing region B by, for example, pasting with an adhesive, ultrasonic bonding, heat fusion using an embossing roll, or the like.

The upright fulcrum 16b of the leg side gathers 16 is located on the inner side in the width direction W than the outer end 10a of the main body portion 10 in the width direction W in the extended state. The standing fulcrum 16b extends along the longitudinal direction L from the ventral part 101 to the dorsal part 102. In this embodiment, the standing fulcrum 16b is located inside the contraction member 152 of the leg gathers 15 in the width direction W. However, the positional relationship between the upright fulcrum 16b and the contraction member 152 is not limited to the above. For example, the upright fulcrum 16b may overlap a part of the shrinkable member 152 when viewed from the thickness direction T. Note that in the extended state shown in FIG. 1, the pair of leg side gathers 16 are folded inward in the width direction W. Therefore, the top portions 16a of the pair of leg side gathers 16 are located on the inner side in the width direction W than the upright fulcrum 16b.

The leg side gathers 16 are configured to be able to stand up by contracting in the longitudinal direction L. More specifically, the leg side gathers 16 includes an elastic member 17 extending along the longitudinal direction L between a pair of fixed regions B provided at both ends of the longitudinal direction L. As an example, the elastic member 17 is composed of one or more (three in this embodiment) rubber threads. The leg side gathers 16 can be erected by contraction of the elastic member 17 in the longitudinal direction L. In the worn state, the elastic member 17 contracts and the leg side gathers 16 stand up, so that leakage of excrement to the outside of the main body portion 10 (lateral leakage) is suppressed. That is, when the leg side gathers 16 are in the upright state, a leak-proof cuff is formed in the crotch portion 103 to prevent excrement from leaking to the outside along the surface of the top sheet 11.

As shown in FIGS. 3 and 4, in the present embodiment, the leg gathers 15 are mainly formed between the parts of the back sheet 12 and the side sheets 14 outside the upright support point 16b in the width direction W, and the contractible member 152. , is composed of. Further, the leg side gathers 16 mainly include a portion of the side sheet 14 on the inner side in the width direction W than the upright fulcrum 16b, and an elastic member 17.

As shown in FIG. 4, in the leg gathers 15 (inseam leg gathers 151), a portion outside the outer end 152a in the width direction W of the contraction member 152 is composed of the back sheet 12 and the side sheet 14. This is a relatively thin portion and constitutes a low-rigidity portion 151A with relatively low rigidity. On the other hand, in the leg gathers 15 (inseam leg gathers 151), the part where the contraction member 152 is arranged is thicker than the low-rigidity part 151A because the contraction member 152 is provided in addition to the back sheet 12 and the side sheet 14. The high-rigidity portion 151B is higher in rigidity than the low-rigidity portion 151A. Due to such a difference in rigidity, the inseam leg gathers 151 bends along the bending starting point (in this embodiment, the part along the outer end 152a) along the boundary BL1 between the low-rigidity part 151A and the high-rigidity part 151B. It is made easier.

Similarly, in the leg gathers 15 (inseam leg gathers 151), the part inside the inner end 152b in the width direction W of the contraction member 152 is a relatively thin part constituted by the back sheet 12 and the side sheet 14. , constitutes a low-rigidity portion 151C having relatively low rigidity. The crotch leg gathers 151 are made to be easily folded along a folding starting point (in this embodiment, a portion along the inner end portion 152b) along the boundary BL2 between the low rigidity portion 151C and the high rigidity portion 151B. As described above, in this embodiment, the outer end 152a and the inner end 152b of the shrinkable member 152 form folding starting points on both the outer and inner sides of the shrinkable member 152.

The exterior sheet 12b (back sheet 12) is provided with a connecting portion 50 configured to be connectable to the wearing article 2. Note that "coupling" means being fixed to the wearing article 2 to the extent that it can be attached and detached, and includes various means such as engagement and adhesion. The coupling portion 50 may be constituted by, for example, an engagement hook (for example, a region including a plurality of pins (hook structure) having a claw portion at the tip), an adhesive sheet, or the like. In this embodiment, the bonding portion 50 is made of an adhesive sheet and includes two bonding portions 51 and 52. The joint portion 51 is formed in a rectangular region that is longer in the width direction W than in the longitudinal direction L at approximately the center of the back side portion 102 . The joint portion 52 is provided in a region of the crotch portion 103 on the back side portion 102 side. The coupling portion 52 is formed in a rectangular region whose length in the longitudinal direction L is slightly longer than the length in the width direction W.

Further, a slip prevention portion 60 is provided in a portion of the exterior sheet 12b (back sheet 12) that constitutes each of the pair of leg gathers 15. The anti-slip portion 60 suppresses misalignment of the absorbent article 1 with respect to the wearing article 2 in the shear direction. The anti-slip portion 60 may be formed of, for example, the same material as the coupling portion 50 described above. The shear direction is a direction parallel to the contact surface between the absorbent article 1 and the wearing article 2 (in-plane direction), and a direction perpendicular to the thickness direction T (i.e., parallel to the longitudinal direction L and the width direction W). (direction along the surface). In the present embodiment, the anti-slip portion 60 includes two anti-slip portions 61 formed in a rectangular shape (the length in the longitudinal direction L is longer than the length in the width direction W) with substantially the same size. , 62. The anti-slip parts 61 and 62 are arranged side by side in the width direction W, and the anti-slip part 61 is located on the outer side of the anti-slip part 62 in the width direction W.

In the present embodiment, when viewed from the width direction W, at least a portion of the joint portion 50 (the joint portion 51 in this embodiment) is arranged to overlap with the slippage prevention portion 60. In other words, the range in which at least a portion of the coupling part 50 (coupling part 51) is formed in the longitudinal direction L overlaps with the range in which the slippage prevention part 60 is formed in the longitudinal direction L. Furthermore, the coupling portion 50 overlaps the absorbent core 13a in the thickness direction T. According to the above configuration, the following effects are achieved. First, the anti-slip portion 60 is provided outside in the width direction W of the region where the absorbent article 1 is fixed to the wearing article 2 by the coupling portion 51 . As a result, when attaching the absorbent article 1 to the wearable article 2, the absorbent article 1 can be stably attached to the wearable article 2 at the rigid portion where the absorber 13 is provided (i.e., the joint portion 51). Can be fixed. That is, the absorbent article 1 is firmly fixed to the wearing article 2 by the coupling portion 51 in the range where the anti-slip portion 60 is provided in the longitudinal direction L. Thereafter, by widening the leg gathers 15 in the width direction W, the anti-slip portion 60 can be sufficiently widened in the width direction W. That is, a sufficient contact area between the anti-slip portion 60 and the wearing article 2 can be ensured. Thereby, the effect of suppressing positional deviation by the anti-slip portion 60 can be enhanced. In addition, when the crotch leg gathers 151 are pulled toward the wearer's crotch area as the wearer's thighs move, the force in the shearing direction that acts on the anti-slip portion 60 is suppressed from slipping in the longitudinal direction L. It can be suitably dispersed in the coupling part 51 provided in the same area as the part 60. As a result, the fixing force against the force in the shearing direction in the anti-slip portion 60 can be strengthened, and the force that pulls the inseam leg gathers 151 inward in the width direction W can be effectively suppressed.

Next, the wearing article 2 to which the absorbent article 1 is attached will be described with reference to FIGS. 5 to 7. FIG. 5 is a plan view of the wearing article 2 viewed from the skin side. FIG. 6 is a plan view of the wearing article 2 to which the absorbent article 1 is attached. FIG. 7 is a front view showing the absorbent article 1 and the worn article 2 in a worn state.

The wearing article 2 has an inner surface 2a that faces the back surface (exterior sheet 12b) of the absorbent article 1 in the worn state, and an outer surface 2b (see FIG. 7) on the opposite side to the inner surface 2a. The wearing article 2 has a ventral part 201 located on the ventral side of the wearer in the worn state, a dorsal part 202 located on the dorsal side of the wearer in the worn state, and the ventral part 201 and the dorsal part 202. The crotch area 203 is located between the legs. The ventral part 201, the crotch part 203, and the dorsal part 202 are arranged along the longitudinal direction L from the ventral side to the dorsal side of the wearer. As an example, when the wearing article 2 is divided into four equal parts in the longitudinal direction L, one region located most ventral side corresponds to the ventral part 201, and one region located most dorsal side corresponds to the ventral part 201. This corresponds to the dorsal side part 202 , and the two regions located between the ventral side part 201 and the dorsal side part 202 correspond to the crotch part 203 .

As shown in FIG. 6, in this embodiment, the absorbent article 1 is attached to the approximate center of the wearing article 2 in the longitudinal direction L and the width direction W. For example, the end of the absorbent article 1 in the longitudinal direction L and the end of the wearing article 2 in the longitudinal direction L substantially match, and the center of the absorbent article 1 in the width direction W and the center of the wearing article 2 in the width direction W. The absorbent article 1 is placed on the wearing article 2 so that the two substantially coincide with each other. Moreover, the absorbent article 1 is placed on the wearing article 2 so that the outer sheet 12b faces the inner surface 2a. Thereby, the absorbent article 1 is attached to the wearing article 2. That is, the coupling portion 50 and the slippage prevention portion 60 provided on the exterior sheet 12b are fixed to the inner surface 2a of the wearing article 2.

Fixed portions 2c are provided at both ends of the inner surface 2a of the back side portion 202 in the width direction W. The fixing portion 2c is constituted by, for example, a hook portion of a hook-and-loop fastener, a snap button (one of a convex portion and a concave portion), and the like. Furthermore, fixing portions 2d corresponding to the fixing portions 2c are provided at both ends of the outer surface 2b of the abdominal portion 201 in the width direction W. The fixing portion 2d is constituted by, for example, a loop portion of a hook-and-loop fastener, a snap button (the other of the convex portion and the concave portion), or the like. As shown in FIG. 7, in the worn state, each fixing part 2c is coupled to each fixing part 2d. Thereby, the side edge portions of the crotch portion 203 in the width direction W constitute the leg portions 2e.

As shown in FIG. 7, the leg part 2e is a part that forms an opening through which both legs (thighs H1) of the wearer H are passed in the worn state. An elastic member 2f that contracts along the leg portion 2e is provided in a portion along the leg portion 2e. The elastic member 2f is, for example, a rubber thread, a stretchable sheet, or the like. In addition, in FIG. 7, the part indicated as H2 is the abdomen (lower abdomen) of the wearer H.

As shown in FIG. 6, the absorbent article 1 is configured such that at least a portion of the crotch leg gathers 151 protrudes from the wearing article 2 in the width direction W when the absorbent article 1 is attached to the wearing article 2. Thereby, as shown in FIG. 7, in the worn state, at least a portion of the crotch leg gathers 151 is configured to be exposed outside the leg portion 2e of the wearing article 2. In the leg gathers 15, the inseam leg gathers 151 (mainly, as described above, the part exposed outside the leg part 2e when worn) moves inward in the width direction W by the movement of the thigh H1 of the wearer H. It has a suppressing means for suppressing the pulling force. That is, the suppressing means suppresses the crotch leg gathers 151 from being drawn into the crotch area of the wearer H, so that at least a portion of the crotch leg gathers 151 is pulled into the leg portion of the wearing article 2, as shown in FIG. It plays the role of maintaining a state protruding outward from 2e. In this embodiment, at least the slippage prevention part 60 and the contraction member 152 function as a suppressing means.

[Operations and effects of the first embodiment]
As described above, in the absorbent article 1, the leg gathers 15 are provided with a suppressing means for suppressing the force that pulls the inseam leg gathers 151 inward in the width direction W. As a result, it is possible to effectively prevent the crotch leg gathers 151 from being drawn toward the crotch area of the wearer H as the wearer H's thigh H1 moves, and to prevent lateral leakage of excrement from the leg gathers 15. can reduce the risk of As a result, it is possible to suppress the occurrence of stains on the wearing article 2 due to the side leakage.

As described above, the suppressing means includes a displacement prevention part 60 that suppresses displacement of the leg gathers 15 with respect to the wearing article 2 in the shear direction (direction along a plane parallel to the longitudinal direction L and the width direction W). According to the above configuration, even if a force (pulling force) that pulls the leg gathers 15 including the crotch leg gathers 151 toward the crotch region of the wearer H occurs when the wearer H performs a leg-closing motion, The movement of the leg gathers 15 in the shearing direction is suppressed by the anti-slip portion 60. As a result, a force (counterforce) that attempts to maintain the position of the leg gathers 15 in the width direction W against the above-mentioned tensile force can be generated. Thereby, it is possible to effectively prevent the crotch leg gathers 151 from being drawn into the crotch area.

As shown in FIGS. 1 to 3, the anti-slip portion 60 is located at least one of the ventral side portion 101 and the dorsal side portion 102 (in the present embodiment, the dorsal side portion 102) in the width direction W relative to the absorbent core 13a. is placed outside. When the wearer H performs a leg-closing motion, the portion of the leg gathers 15 from the end (outer end 10a) in the width direction W of the main body 10 to the absorbent core 13a (i.e., the absorbent The above-mentioned tensile force is more likely to occur in the relatively thick and highly rigid portion (where the core 13a is disposed, which is more easily deformed than the relatively thick portion). According to the above configuration, by providing the anti-slip portion 60 in such a portion (that is, the outer portion of the absorbent core 13a), the above-mentioned counterforce can be suitably generated in the portion. As a result, it is possible to effectively prevent the crotch leg gathers 151 from being drawn into the crotch area.

As shown in FIG. 1, the anti-slip portion 60 (in this embodiment, a portion of the anti-slip portion 61 and the anti-slip portion 62) is located between the outer end 10a and the outer end of the absorbent core 13a in the width direction W. (In this embodiment, the end portion of the absorbent core 13a located at the outermost side in the width direction W) . Furthermore, the anti-slip portion 60 is disposed on the outer side in the width direction W than the upright fulcrum 16b of the leg side gathers 16. According to any of the above configurations, by arranging at least a part of the slip prevention part 60 at a certain point or more outside the leg gathers 15 (that is, outside the virtual line VL or the standing fulcrum 16b), the above-mentioned tension can be prevented. It is possible to suitably generate a counterforce that opposes the force.

As described above, in this embodiment, the slippage prevention part 60 is arranged only on the back side part 102. The leg gathers 15 contract in the longitudinal direction L at least in the crotch region 103. Furthermore, the leg portion 2e of the wearing article 2 to which the absorbent article 1 is attached may also be configured to contract to some extent in the longitudinal direction L in order to improve the feeling of wearing (fitting). In this embodiment, the leg portion 2e is configured to contract in the longitudinal direction L by the elastic member 2f arranged along the leg portion 2e. For this reason, if the anti-slip portions 60 are disposed on both the ventral portion 101 and the dorsal portion 102, the anti-slip portions 60 on the ventral portion 101 and the dorsal portion 102 should be placed in appropriate positions on the wearable article 2. In order to wear the wearer in the correct position, it is necessary to fully stretch both the leg gathers 15 and the wearable article 2 while accurately aligning the wearer, which places a heavy burden on the wearer. In addition, when the leg gathers 15 is fixed to the wearing article 2 at both the ventral part 101 and the dorsal part 102, there is a difference in the degree of expansion and contraction in the longitudinal direction L of the leg gathers 15 and the wearing article 2 (mainly the leg part 2e). As a result, there is a possibility that only one of the slippage prevention parts 60 of the ventral side part 101 and the back side part 102 comes off from the wearing article 2. In this case, there is a possibility that one of the slippage prevention parts 60 may be re-fixed to the wearing article 2 at an inappropriate position. As a result, for example, the leg gathers 15 and the thigh H1 of the wearer H do not come into close contact with each other, and a gap is created between the leg gathers 15 and the thigh H1 of the wearer H. There is a risk of lateral leakage. On the other hand, according to the configuration in which the anti-slip portion 60 is disposed only on one of the ventral side portion 101 and the dorsal side portion 102 as in this embodiment, the occurrence of the above-mentioned problems can be avoided.

Furthermore, the slippage prevention part 60 is arranged on the outer side of the contraction member 152 in the longitudinal direction L. According to the above configuration, by arranging the anti-slip portion 60 as much as possible on the outer side of the leg gathers 15 (that is, on the outer side of the contraction member 152 in the longitudinal direction L), it is possible to suitably generate the above-mentioned counterforce. can. In addition, by arranging the anti-slip portion 60 so as not to overlap the contraction member 152, it is possible to prevent the anti-slip portion 60 from contracting together with the contraction member 152. In the case of an adhesive member, it is possible to prevent the adhesive surfaces (in the case of an adhesive member) from sticking together. Thereby, convenience for the wearer when mounting the absorbent article 1 on the wearing article 2 can be improved.

Further, the entire anti-slip portion 60 in the width direction W (in this embodiment, the entire anti-slip portions 61 and 62) is arranged such that it overlaps the shrinkable member 152 in the thickness direction T when viewed from the longitudinal direction L. It is located. The anti-slip portion 60 that suppresses displacement in the shear direction is configured to apply force in the in-plane direction of the contact surface between the anti-slip portion 60 and the wearing article 2 (i.e., the anti-slip portion 60 is applied to the wearing article 2 in the longitudinal direction L and While the resistance force is relatively strong against the force in the out-of-plane direction of the contact surface (that is, the force that tries to peel off the anti-slip portion 60 from the wearable article 2), In some cases, the resistance to According to the above configuration, by arranging the slip prevention part 60 at a location where the shrinkage force in the longitudinal direction L by the contraction member 152 is likely to act, the slip prevention part 60 can be applied to Inward forces are more likely to occur. As a result, the occurrence of a situation in which the anti-slip portion 60 unexpectedly comes off from the wearing article 2 can be suppressed.

It should be noted that not the whole of the anti-slip portion 60 in the width direction W, but more than half of the anti-slip portion 60 in the width direction W overlaps the shrinkable member 152 in the thickness direction T when viewed from the longitudinal direction L. may be placed in Even in this case, although the effect is considered to be slightly lower than when the entire widthwise direction W of the anti-slip portion 60 overlaps the shrinkable member 152, the same effect as described above can be obtained. Further, at least a portion of the slippage preventing portion 60 may be arranged so as to overlap the shrinkable member 152 in the thickness direction T when viewed from the longitudinal direction L. Even in this case, the same effect as described above can be obtained, although the effect is considered to be slightly lower than when more than half of the portion in the width direction W of the anti-slip portion 60 overlaps the shrinkable member 152.

Moreover, the contraction member 152 functions as at least a part of the suppressing means by being configured as an integral sheet-like member having a width of a certain value or more in the width direction W as described above. According to the above configuration, the rigidity of the inseam leg gathers 151 can be ensured by the contraction member 152 configured as an integral sheet-like member. Furthermore, even if the crotch leg gathers 151 are pulled toward the crotch area due to the pulling force, and the contraction member 152 is thereby temporarily contracted in the width direction W, when the pulling force weakens (for example, when the wearer H When the leg (thigh H1) is opened again after performing the closing operation, a restoring force is generated in the contractible member 152 to return to its original sheet-like shape. Thereby, it is possible to prevent the crotch leg gathers 151 from being gradually drawn toward the crotch region (that is, cumulatively drawn) due to repeated leg-closing operations.

Further, the restraining means is located inside in the width direction W than the outer end 10a of the crotch leg gathers 151 in the width direction W, and has a bending starting point provided along the outer end 10a of the crotch leg gathers 151. That is, such a bending starting point functions as at least a part of the suppressing means. In this embodiment, the bending starting points are provided both on the inner side of the shrinkable member 152 in the width direction W and on the outer side of the shrinkable member 152 in the width direction W. Moreover, as shown in FIG. 4, in this embodiment, the bending starting point is the boundary BL1, BL2 between the low rigidity parts 151A, 151C and the high rigidity part 151B (i.e., the outer end 152a and the inner end of the shrinkable member 152). 152b).

According to the above configuration, when a tensile force is applied to the inseam leg gathers 151, the inseam leg gathers 151 can be prevented from breaking along the bending point before the entire inseam leg gathers 151 is pulled toward the crotch area. You can expect it. As a result of such a bending operation, the tensile force acting on the crotch leg gathers 151 can be weakened. Thereby, it is possible to effectively prevent the crotch leg gathers 151 from being drawn into the crotch area. Further, according to the above configuration, a bending starting point can be easily and reliably formed at the boundary between the low rigidity portions 151A, 151C and the high rigidity portion 151B. In this embodiment, by causing a bending motion between the low-rigidity portion 151A and the high-rigidity portion 151B, transmission of tensile force from the low-rigidity portion 151A to the high-rigidity portion 151B, where tensile force initially occurs, is suppressed. We can expect that. Similarly, by causing the bending motion between the high-rigidity portion 151B and the low-rigidity portion 151C, it can be expected to suppress the transmission of tensile force from the high-rigidity portion 151B to the low-rigidity portion 151C.

Note that the bend starting point extending in the longitudinal direction L formed in the crotch leg gathers 151 as described above may be formed by an embossed part provided in the crotch leg gathers 151 so as to extend along the longitudinal direction L. . The embossed portion is a portion where an emboss is formed by embossing. According to such a configuration, the bending starting point can be easily and reliably formed by the embossed portion.

[Second embodiment]
With reference to FIG. 8, the configuration of an absorbent article 1A according to the second embodiment will be described. FIG. 8 is a plan view of the absorbent article 1A viewed from the skin side.

The absorbent article 1A differs from the absorbent article 1 in that it is configured as follows, and is similar to the absorbent article 1 in other configurations. The absorbent article 1A has a main body 10A instead of the main body 10. The main body 10A differs from the main body 10 in that it has a recess 10b provided at the outer end 10a of the leg gathers 15. The recessed portion 10b is formed so as to be depressed inward in the width direction W when viewed from the thickness direction T (see FIGS. 3 and 4), at least in a portion including the crotch leg gathers 151. The narrowest part 10c located at the innermost side in the width direction W of the recessed part 10b is arranged at the inseam leg gathers 151. For example, the narrowest portion 10c is provided at approximately the center of the main body portion 10A in the longitudinal direction L (approximately the center position of the crotch portion 103 in the longitudinal direction L).

According to the absorbent article 1A provided with such a recess 10b, it is possible to effectively suppress the crotch leg gathers 151 from being drawn into the crotch region due to at least one of the following first to third effects.

(First effect)
The pulling force that pulls the crotch leg gathers 151 toward the crotch area of the wearer H, which is generated when the wearer H closes the legs, is applied to the position farthest from the crotch area (i.e., the outer end 10a of the crotch leg gathers 151 in the width direction W). ) occurs first. According to the absorbent article 1A, since the outer end 10a of the inseam leg gathers 151 can be brought closer to the crotch area of the wearer H by the amount of the recess 10b, the tensile force is first applied to the inseam leg gathers 151 ( The timing of acting on the outer end portion 10a) in the width direction W can be delayed. As a result, the total tensile force acting on the crotch leg gathers 151 during the leg closing operation can be reduced.

(Second effect)
Since the leg-closing motion is a rotational motion centered around the groin (fulcrum), it is thought that a larger pulling force (moment) is generated at a point farther from the groin. According to the absorbent article 1A, since the outer end 10a of the inseam leg gathers 151 can be brought closer to the crotch area of the wearer H by the amount of the recess 10b, the magnitude of the tensile force that initially acts on the inseam leg gathers 151 is reduced. (maximum value) can be reduced. This makes it possible to prevent the crotch leg gathers 151 from entering the crotch region at the initial stage of the leg-closing motion where a particularly large pulling force occurs.

(Third effect)
It is thought that the above-mentioned tensile force is mainly generated along the normal direction of the outer end 10a at each point (each position along the longitudinal direction L) of the outer end 10a of the crotch leg gathers 151. Therefore, when the recess 10b is not provided, a tensile force in the direction inward in the width direction W is generated in the entire area in the longitudinal direction L of the outer end 10a of the crotch leg gathers 151. On the other hand, when the recess 10b is provided as in the absorbent article 1A, the direction of the tensile force generated at each point of the outer end 10a of the inseam leg gathers 151 can be adjusted in multiple directions (that is, at an angle with respect to the width direction W). can be dispersed in the direction of As a result, the inward component of the tensile force acting on the entire crotch leg gathers 151 in the width direction W can be made smaller compared to the case where the recess 10b is not provided.

Furthermore, in the absorbent article 1A, the narrowest part 10c of the recess 10b is located outside the virtual center line VC in the width direction W. The virtual center line VC is defined by the part of the outer end 10a of the leg gathers 15 located at the outermost side in the width direction W (that is, the part of the outer end 10a where the recess 10b is not provided) and the part of the leg side gathers 16. This is a straight line that passes through the center in the width direction W with the upright fulcrum 16b and is parallel to the longitudinal direction L. According to the above configuration, the area of the inseam leg gathers 151 (i.e., the area of the inseam leg gathers 151 (i.e., In this way, it is possible to secure an area exposed outside the leg portion 2e of the wearing article 2, and to appropriately suppress the occurrence of side leakage of excrement from the leg gathers 15.

Furthermore, when viewed from the thickness direction T, the outer end 131 of the absorbent core 13a in the width direction W has a shape that corresponds to the shape of the recess 10b. That is, as described in the first embodiment, the absorbent core 13a has a constricted shape, and the outer end 131 of the absorbent core 13a has a recess 132 that is recessed inward in the width direction W. It is formed. In the longitudinal direction L, the position of the narrowest part 10c of the recess 10b and the position of the narrowest part 132a of the recess 132 substantially coincide with each other. Note that the recess 132 only needs to have a curved shape similar to the recess 10b, and the depth and shape of the recess 132 do not need to completely match the depth and shape of the recess 10b. For example, the recess 10b may be formed such that the variation in distance between the outer end 10a of the inseam leg gathers 151 and the outer end 131 of the absorbent core 13a at each position along the longitudinal direction L is small. . For example, as in the present embodiment, the positions of the narrowest part 10c and the narrowest part 132a in the longitudinal direction L may be approximately the same, and the constriction shape of the recess 132 may be similar to the constriction shape of the recess 10b.

If the absorbent core 13a is not provided with the recess 132, the absorbent core 13a will break due to the force applied to the inner side in the width direction W, and the force that will pull the crotch leg gathers 151 toward the crotch of the wearer H will occur. is likely to occur. On the other hand, by providing the absorbent core 13a with the recess 132 that matches the shape of the thigh H1 of the wearer H as in this embodiment, the fit of the inseam leg gathers 151 is improved. deformation can be suppressed, and as a result, the above-mentioned pulling force can be reduced. In other words, when the recess 132 is not provided, the distance from the end of the absorbent core 13a in the width direction W to the outer end 10a of the crotch leg gathers 151 is shorter than when the recess 132 is provided. This makes it difficult for the inseam leg gathers 151 to fit along the thigh H1. By providing the recess 132, the fit to the shape of the thigh H1 is improved, so it is possible to prevent a decrease in the contact area between the leg gathers 15 and the skin of the wearer H, and as a result, the above-mentioned pulling force can be reduced. . On the other hand, at the end of the absorbent core 13a in the longitudinal direction L (that is, the part where the recess 132 is not formed), the width of the absorbent core 13a can be increased, so that the absorbency of the absorbent core 13a can be increased. Can be secured. Further, according to the configuration of this embodiment in which the recess 132 of the absorbent core 13a and the recess 10b of the main body portion 10 are provided, the following effects are further achieved. That is, according to the above configuration, the shape of the outer end 131 of the absorbent core 13a in the width direction W and the end of the entire absorbent article 1A in the width direction W (that is, the outer end of the leg gathers 15 in the width direction W) 10a) into a similar concave shape, the distance in the width direction W between the outer end 10a of the inseam leg gathers 151 and the outer end 131 of the absorbent core 13a is made almost uniform in the longitudinal direction L. Can be done. Thereby, the leg gathers 15 can suitably fit the thigh H1 of the wearer H. As a result, the occurrence of side leakage of excrement from the leg gathers 15 can be suitably suppressed.

Further, the narrowest part 10c of the recessed part 10b is arranged on the outer side in the width direction W than the contraction member 152 in the crotch leg gathers 151. In other words, the contraction member 152 constituting the high-rigidity portion 151B having relatively high rigidity is provided in a portion inside the recess 10b in the width direction W, as described above. When the area of the leg gathers 15 (especially the inseam leg gathers 151) is reduced by the recess 10b, the inseam leg gathers 151 is required to have a certain degree of rigidity in order to maintain the stability of the inseam leg gathers 151. According to the above configuration, the relatively rigid contraction member 152 formed in a sheet shape is arranged in the crotch leg gathers 151, so that the rigidity of the crotch leg gathers 151 can be ensured. Therefore, while ensuring the stability of the crotch leg gathers 151, it is possible to obtain the effects (for example, the first to third effects described above) of providing the recess 10b.

[Modification of second embodiment]
With reference to FIG. 9, the structure of an absorbent article 1B according to a modification of the second embodiment will be described. FIG. 9 is a plan view of the absorbent article 1B viewed from the skin side. As shown in FIG. 9, the absorbent article 1B is different from the absorbent article 1A in that the absorbent article 1B has a main body part 10B provided with a recess 10b that is larger (deeper) than the recess 10b of the main body 10A. Moreover, for this reason, the area (length in the width direction W) of the shrinkable member 152 of the absorbent article 1B is smaller than the area of the shrinkable member 152 of the absorbent article 1A. The other structure of the absorbent article 1B is the same as that of the absorbent article 1A.

In the absorbent article 1B, the narrowest part 10c of the recess 10b is located inside the virtual center line VC in the width direction W. According to the above configuration, the first to third effects described above are suitably achieved by forming the recess 10b relatively large and bringing the outer end 10a of the crotch leg gathers 151 as close as possible to the crotch area of the wearer H. can be done.

[Third embodiment]
With reference to FIG. 10, the configuration of an absorbent article 1C according to the third embodiment will be described. FIG. 10 is a plan view of the absorbent article 1C viewed from the skin side.

The absorbent article 1C is different from the absorbent article 1 in that it is configured as follows, and the other configurations are the same as the absorbent article 1. The absorbent article 1C has a main body section 10C instead of the main body section 10. The main body portion 10C has one or more slit portions S provided in each of the pair of leg gathers 15 (inseam leg gathers 151). The slit portion S functions as one of the suppressing means.

In this embodiment, each leg gather 15 is provided with a plurality of (two) slit portions S1 and S2. The slit parts S1 and S2 are provided at positions that divide the leg gathers 15 into three equal parts in the longitudinal direction L, and the slit part S1 is provided on the ventral side of the slit part S2. Each slit portion S is a cut extending inward in the width direction W from the outer end portion 10a of the crotch leg gathers 151 in the width direction W. In this embodiment, the leg gathers 15 includes a portion 15A from the ventral end to the slit portion S1, a portion 15B between the slit portions S1 and S2, and a portion 15C from the slit portion S2 to the dorsal end. are partially separated.

In this embodiment, each slit portion S extends to the inner side of the center position of the leg gathers 15 in the width direction W, but does not reach the inner end portion 152b of the contraction member 152. That is, the slit portions S1 and S2 partially separate the shrinkable member 152. However, the length of the slit portion S is not limited to the above embodiment. The end of the slit portion S may be located outside the center position of the leg gathers 15 in the width direction W, or may be located inside the inside end 152b of the contraction member 152. In the latter case, the contraction member 152 is completely separated (broken) in the longitudinal direction L by the slit portion S.

According to the absorbent article 1C, the slit portion S allows the inseam leg gathers 151 to be attached to a plurality of portions in the longitudinal direction L together with the contraction member 152 (in the present embodiment, a portion belonging to the portion 15A, a portion belonging to the portion 15B, and a portion 15C). It can be separated into two parts (to which it belongs). Thereby, when a tensile force is generated that pulls one part toward the groin region, other parts can be prevented from being pulled toward the groin region in conjunction with the one part. That is, when a tensile force is generated in any part of the inseam leg gathers 151, the influence range of the tensile force can be limited to that part, and transmission of the tensile force to other adjacent parts is suppressed. can. As a result, it is possible to effectively prevent the crotch leg gathers 151 from being drawn into the crotch area.

Furthermore, when the crotch leg gathers 151 is separated into a plurality of parts by the slit part S, each part is required to have a certain degree of rigidity in order to maintain the stability of each part. Here, in the absorbent article 1C, the high rigidity portion 151B is configured by the shrinkable member 152 configured as an integral sheet-like member, as described above. That is, since a portion of the contraction member 152 having relatively high rigidity is disposed in each portion separated by the slit portion S, the rigidity of each portion can be ensured. Therefore, according to the absorbent article 1C, the above-mentioned effects can be obtained by providing the slit portion S while ensuring the stability of each portion separated by the slit portion S.

[Modified example]
Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments. The materials and shapes of each structure are not limited to the materials and shapes described above, but various materials and shapes can be employed.

A part of the configuration shown in each of the first to third embodiments may be applied to other embodiments. For example, the absorbent article 1B of the second embodiment may be provided with the slit portion S shown in the third embodiment. That is, in the absorbent article, both the recess 10b and the slit S may be provided.

A part of the configuration shown in each of the first to third embodiments may be changed or omitted. For example, in the absorbent article 1C of the third embodiment, the leg gathers 15 are partially separated by the slit portions S, so the influence of the counterforce generated by the slip prevention portion 60 is reduced There is a possibility that it remains in the portion 15C and does not significantly affect the portion 15B. That is, it is considered that the effect of the anti-slip section 60 as a suppressing means when the slit section S is provided is smaller than the effect achieved when the slit section S is not provided. Based on this idea, the anti-slip portion 60 may be omitted in the absorbent article 1C.

Furthermore, in the above embodiment, the wearing article 2 is a tape-type cloth underwear, but the wearing article 2 may be a pants-type cloth underwear.

DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C... Absorbent article, 2... Wearing article, 10, 10A, 10B, 10C... Main body part, 10a... Outer end part, 10b... Recessed part (suppressing means), 10c... Narrowest part, 11... Top sheet, 12... Back sheet, 13a... Absorbent core, 15... Leg gathers, 16... Leg side gathers, 16b... Erecting fulcrum, 60, 61, 62... Slip prevention part (suppression means), 101... Abdominal part, DESCRIPTION OF SYMBOLS 102... Back side part, 103... Crotch part, 131... Outer end part, 151... Inseam leg gathers, 151A, 151C... Low rigidity part, 151B... High rigidity part, 152... Contractible member (suppression means), BL1, BL2... Boundary, H...Wearer, H1...Thigh, L...Longitudinal direction, S, S1, S2...Slit part (suppression means), T...Thickness direction, VC...Virtual center line, VL...Virtual line, W... Width direction.

Claims (23)

1. An absorbent article attached to a wearable article that is a reusable cloth underwear worn around the lower torso of a wearer and placed between the wearable article and the wearer, the absorbent article comprising:
   A ventral part located on the ventral side of the wearer in the wearing state when worn by the wearer together with the wearing article, a dorsal part located on the dorsal side of the wearer in the wearing state, and the ventral part and a crotch portion located between the dorsal side portion, and a main body portion that is divided into:
   The main body portion is
   a liquid-permeable top sheet facing the wearer's skin in the worn state;
   a liquid-impermeable back sheet facing the worn article in the worn state;
   an absorbent core disposed between the top sheet and the back sheet and absorbing the wearer's excrement;
   Along the outer edge of the main body in the width direction perpendicular to the longitudinal direction, which is the direction in which the ventral side part, the crotch part, and the back side part are lined up, and the thickness direction, in which the top sheet and the back sheet overlap. and leg gathers that are provided at least in the crotch area and contract in the longitudinal direction,
   The leg gathers have suppressing means for suppressing the force of the inseam leg gathers arranged in the crotch region of the leg gathers being pulled inward in the width direction by the movement of the wearer's thighs.
   Absorbent articles.
2. The suppressing means has a displacement prevention part that suppresses displacement of the leg gathers in the shear direction with respect to the wearing article.
   The absorbent article according to claim 1.
3. The anti-slip portion is disposed outside the absorbent core in the width direction in at least one of the ventral side portion and the dorsal side portion.
   The absorbent article according to claim 2.
4. The anti-slip portion is arranged in a direction in the width direction that is smaller than an imaginary line passing through the center between the outer end of the main body in the width direction and the outer end of the absorbent core in the width direction and parallel to the longitudinal direction. placed on the outside,
   The absorbent article according to claim 3.
5. The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
   The leg side gathers have an upright fulcrum extending in the longitudinal direction inside the outer end of the leg gathers in the width direction,
   The anti-slip portion is disposed on at least one of the ventral side portion and the dorsal side portion on the outside of the erecting support point in the width direction.
   The absorbent article according to claim 2.
6. The slip prevention part is arranged only on one of the ventral side part and the dorsal side part,
   The absorbent article according to claim 2.
7. A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
   The slippage prevention part is arranged on the outer side of the contraction member in the longitudinal direction.
   The absorbent article according to claim 2.
8. A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
   At least a portion of the anti-slip portion is arranged to overlap the shrinkable member in the thickness direction when viewed from the longitudinal direction.
   The absorbent article according to any one of claims 2 to 7.
9. A half or more portion of the anti-slip portion in the width direction is arranged to overlap with the shrinkable member in the thickness direction when viewed from the longitudinal direction.
   The absorbent article according to claim 8.
10. The entirety of the anti-slip portion in the width direction is arranged so as to overlap the shrinkable member in the thickness direction when viewed from the longitudinal direction.
    The absorbent article according to claim 9.
11. The suppressing means is provided at an outer end of the leg gather in the width direction, and has a recess formed to be depressed inward in the width direction when viewed from the thickness direction,
    The narrowest part located innermost in the width direction of the recessed part is arranged in the inseam leg gathers,
    The absorbent article according to claim 1.
12. The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
    The leg side gathers have an upright fulcrum extending in the longitudinal direction inside the outer end of the leg gathers in the width direction,
    The narrowest part of the recess is a virtual center that passes through the center in the width direction between the outermost part of the outer end of the leg gather in the width direction and the upright fulcrum and is parallel to the longitudinal direction. located inside the line in the width direction,
    The absorbent article according to claim 11.
13. The main body portion is provided extending along the longitudinal direction from the ventral side portion to the dorsal side portion, and both ends in the longitudinal direction are fixed to the ventral side portion and the dorsal side portion, and It has leg side gathers configured to be able to stand up by contracting in the direction,
    The leg side gathers have an upright fulcrum extending in the longitudinal direction inside the outer end of the leg gathers in the width direction,
    The narrowest part of the recess is a virtual center that passes through the center in the width direction between the outermost part of the outer end of the leg gather in the width direction and the upright fulcrum and is parallel to the longitudinal direction. located outside the line in the width direction;
    The absorbent article according to claim 11.
14. When viewed from the thickness direction, the outer end of the absorbent core in the width direction has a shape corresponding to the shape of the recess.
    The absorbent article according to claim 11.
15. A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
    The suppressing means has a slit portion extending inward in the width direction from an outer end of the inseam leg gather in the width direction to at least partially separate the contraction member.
    The absorbent article according to claim 1.
16. The suppressing means has a bending starting point located inward in the width direction from an outer end of the inseam leg gather in the width direction, and provided along the longitudinal direction.
    The absorbent article according to claim 1.
17. The inseam leg gathers have a low-rigidity portion and a high-rigidity portion having higher rigidity than the low-rigidity portion,
    The bending starting point is formed by a boundary between the low rigidity part and the high rigidity part,
    The absorbent article according to claim 16.
18. The bending starting point is constituted by an embossed part provided in the inseam leg gathers so as to extend along the longitudinal direction.
    The absorbent article according to claim 16.
19. A contraction member is disposed along the longitudinal direction in a portion of the leg gathers that includes at least the inseam leg gathers, and is arranged to contract at least the inseam leg gathers in the longitudinal direction;
    The contraction member functions as at least a part of the suppressing means by being configured as an integral sheet-like member having a width equal to or more than a certain width in the width direction.
    The absorbent article according to claim 1.
20. The suppressing means has a bending starting point located inward in the width direction from an outer end of the inseam leg gather in the width direction and provided along the longitudinal direction,
    The bending starting point is provided at least one of an inner side in the width direction than the shrinkable member and an outer side in the width direction than the shrinkable member,
    The absorbent article according to claim 19.
21. The leg gathers are
    a high-rigidity part in which the contraction member is arranged;
    a low-rigidity part that is provided at least one of an inner side in the width direction than the contraction member and an outer side in the width direction than the contraction member, and has a lower rigidity than the high-rigidity part;
    The bending starting point is constituted by a boundary between the high rigidity part and the low rigidity part,
    The shrinkable member is not arranged in the low-rigidity portion.
    The absorbent article according to claim 20.
22. The suppressing means has a slit portion extending inward in the width direction from an outer end of the inseam leg gather in the width direction to at least partially separate the contraction member.
    The absorbent article according to claim 19.
23. The suppressing means is provided at an outer end of the leg gather in the width direction, and has a recess formed to be depressed inward in the width direction when viewed from the thickness direction,
    The narrowest part of the recess that is located innermost in the width direction is located outside of the contraction member in the inseam leg gathers in the width direction.
    The absorbent article according to claim 19.

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