JP7179457B2 - absorbent article - Google Patents

Description

The present invention relates to absorbent articles such as disposable diapers.

The disposable diaper described in Patent Document 1 includes an outer body arranged in a front waist region and a rear waist region, and an outer body disposed on the skin surface side of the outer body and straddling the front waist region, the rear waist region, and the crotch region. and an absorbent body arranged as follows. The absorbent body and the outer covering are joined together in the joining region. The joint regions include a first joint region provided over the entire width direction of the absorbent body at the outer end portion in the front-rear direction of the absorbent body, and a second joint region disposed on the crotch region side of the first joint region. , have The second joint region is not provided in the entire width direction of the absorber. A non-bonded region where the absorber and the exterior body are not bonded is provided outside the second bonded region in the width direction. The non-bonded region is provided at the rear end of the front waist region.

JP 2008-194161 A

Generally, the position sandwiched by the wearer's legs is biased to the front side of the center of the absorbent article in the front-rear direction. Therefore, the rear end of the front waist region is likely to be pinched by the legs. In the absorbent article described in Patent Document 1, since the non-bonded region is provided at the rear end of the front waist region, the absorbent body may deform inward in the width direction when pinched by the legs. . As a result, the width of the absorbent body is shortened, making it difficult to secure an absorbent area on the front waist region side, which may cause leakage.

Therefore, an absorbent article that can secure an absorbent area in the front waist region and suppress leakage is desired.

An absorbent article according to one aspect includes a front-rear direction, a width direction perpendicular to the front-rear direction, a front waist region, a rear waist region, and a crotch disposed between the front waist region and the rear waist region. an absorbent body disposed across the crotch region, the front waist region and the back waist region; and at least the front waist region and the back waist region on the non-skin surface side of the absorbent body. wherein the front end of the back waist region is provided with a rear non-bonded region where the outer portion of the absorbent main body and the outer body are not bonded. At the rear end of the front waist region, a front joint region is provided in which the outer portion of the absorbent main body and the exterior body are joined.

1 is a plan view of an absorbent article according to an embodiment; FIG. FIG. 2 is a cross-sectional view along the AA cross section of the absorbent article shown in FIG. 1; FIG. 2 is a cross-sectional view along the BB cross section of the absorbent article shown in FIG. 1; It is the figure which showed typically the wearing state of the absorbent article which concerns on embodiment. It is the figure which showed typically the wearing state of the absorbent article which concerns on embodiment.

(1) Overview of Embodiments At least the following matters will become clear from the description of this specification and the accompanying drawings.
An absorbent article according to one aspect includes a front-rear direction, a width direction perpendicular to the front-rear direction, a front waist region, a rear waist region, and a crotch disposed between the front waist region and the rear waist region. an absorbent body disposed across the crotch region, the front waist region and the back waist region; and at least the front waist region and the back waist region on the non-skin surface side of the absorbent body. wherein the front end of the back waist region is provided with a rear non-bonded region where the outer portion of the absorbent main body and the outer body are not bonded. At the rear end of the front waist region, a front joint region is provided in which the outer portion of the absorbent main body and the exterior body are joined.

At the rear end of the front waist region, the outer portion of the absorbent main body and the exterior body are joined. Therefore, when force is applied to the rear end portion of the front waist region by the wearer's legs or the like during wearing, the absorbent main body in the front waist region is less likely to deform in the width direction. Therefore, it is easy to secure the length in the width direction of the absorbent main body in the front waist region and to secure the absorbent area on the front waist region side. In addition, the outer portion of the absorbent main body and the exterior body are not joined at the front end portion of the back waist region. Therefore, at the front end of the rear waist region, the outer body can move with respect to the absorbent body, and can be deformed so as to widen the leg openings. Therefore, when inserting the leg at the time of wearing, it is easy to smoothly insert the leg into the opening around the leg. In addition, when the wearer moves his or her legs, the leg openings can be deformed so that the wearer can move their legs smoothly.

According to a preferred aspect, a first width elastic member that is stretchable in the width direction may be arranged in the rear non-joining region.

According to this aspect, the front end portion of the rear waist region is contracted in the width direction by the first width elastic member, making it easier to fit the wearer's legs. At this time, the front end of the rear waist region can be deformed so that the leg openings widen, and the contraction of the first width elastic member does not fit the leg too much, thereby suppressing deterioration of wearing comfort. It is possible to achieve both an appropriate fit to the legs and ease of movement of the legs.

According to a preferred aspect, the rear non-bonded region extends rearward from the front edge of the rear waist region,
The length in the front-rear direction of the rear non-joining region may be 5 mm or more and 20 mm or less.

A range of 5 mm or more and 20 mm or less rearward from the front edge of the rear waist region is a region where force is likely to be applied particularly by the movement of the legs when the legs are inserted or the legs are moved. Since the non-bonded area is provided in the range, the wearer can smoothly insert the leg when wearing the garment, and can move the leg smoothly when wearing the garment.

According to a preferred aspect, the absorbent article further comprises a side joint portion that joins the outer portion of the front waist region and the outer portion of the rear waist region,
The range in the front-rear direction of the rear non-joint region may be a range up to 30% of the entire front-rear direction of the side joint portion toward the rear from the edge of the side joint portion on the side of the crotch region.

The range of up to 30% of the entire front-to-rear direction of the side joints toward the rear from the edge of the crotch region side of the side joints receives force due to the movement of the legs, especially when the legs are inserted or the legs are moved. This is an easy area. Since the non-bonded area is provided in the range, the wearer can smoothly insert the leg when wearing the garment, and can move the leg smoothly when wearing the garment.

According to a preferred aspect, the absorbent body has an absorbent core,
A first rear joint region in which the absorbent main body and the exterior body are joined is provided inside the rear non-joint region in the width direction,
A boundary between the rear non-joining region and the first rear joining region may be located outside the outer edge of the absorbent core in the width direction.

When the outer body is pulled outward in the width direction when worn, the absorbent main body is pulled outward in the width direction via the outer body. At this time, the outer edge of the absorbent core overlaps the first post-joining region where the outer covering and the absorbent main body are joined. Therefore, when the outer covering is pulled outward in the width direction during wearing, the outer edge of the absorbent core can also be pulled outward in the width direction. It becomes easier to secure the length of the absorbent core in the width direction in the rear waist region, and leakage can be further suppressed.

According to a preferred aspect, a second posterior joint region in which the absorbent main body and the exterior body are joined may be provided on the rear side of the posterior non-joined region.

By joining the exterior body and the absorbent main body in the second post-bonding area provided behind the rear non-bonding area, the exterior body may be turned over with respect to the absorbent main body, or the absorbent main body may be bent inward in the width direction. You can prevent problems such as falling down. The outer body and the absorbent main body can be applied appropriately to the wearer's body, and leakage can be further suppressed.

According to a preferred aspect, the outer body of the rear waist region is stretchable in the width direction, and the length of the second rear bonding region in the width direction is greater than the length of the rear non-bonding region in the width direction. may be longer.

The length in the width direction of the second rear joining region where the outer covering and the absorbent body are joined is longer than the length in the width direction of the rear non-joining region where the outer covering and the absorbent main body are not joined, Contraction in the width direction is easily transmitted to the absorbent main body. Therefore, when the outer body is pulled outward in the width direction at the time of wearing, the absorbent main body can also be pulled outward in the width direction. It is easy to secure the widthwise length of the absorbent main body in the rear waist region as well, and leakage can be further suppressed.

According to a preferred aspect, the exterior body of the rear waist region is stretchable in the width direction,
The absorbent main body has a front-rear elastic member disposed on the outer side of the absorbent main body and capable of stretching in the front-rear direction,
An effective length portion of the front and rear elastic member may overlap the second rear joining region in the thickness direction.

The front and rear elastic members are arranged on the outer side of the absorbent main body and arranged around the legs of the wearer. Since the effective length of the front and rear elastic members overlaps the second rear joint region in the thickness direction, contraction in the width direction of the outer body in the rear waist region and contraction in the front and rear direction by the front and rear elastic members are likely to be interlocked. The front and rear elastic members make it easier for the contracted portion to stand up toward the wearer, thereby suppressing lateral leakage of excrement in the rear waist region.

According to a preferred aspect, a second width elastic member that is stretchable in the width direction may be arranged in a region where the effective length portion of the front and rear elastic members overlaps the second rear joint region.

Since the second width elastic member is arranged in the region overlapping the effective length portion of the front and rear elastic member and the second rear joining region, contraction in the width direction by the second width elastic member and contraction in the front and rear direction by the front and rear elastic member occur. Easy to connect. The front and rear elastic members make it easier for the wearer to stand up in the contracted portion, thereby further suppressing lateral leakage of excrement in the rear waist region.

According to a preferred aspect, the outer body of the front waist region is stretchable in the width direction, and the absorbent main body is arranged on the outer side of the absorbent main body and is stretchable in the front-rear direction. A front and rear elastic member may be provided, and an effective length portion of the front and rear elastic member may overlap the front joining region in the thickness direction.

Since the effective length portion of the front and rear elastic members overlaps the front joint region, contraction in the width direction of the outer body in the front waist region and contraction in the front and rear direction by the front and rear elastic members are likely to be interlocked. The front and rear elastic members make it easier for the contracted portion to stand up toward the wearer, thereby suppressing lateral leakage of excrement in the front waist region.

According to a preferred aspect, a third width elastic member that is stretchable in the width direction may be arranged in a region where the effective length portion of the front and rear elastic members overlaps the front joint region.

According to this aspect, since the third width elastic member is arranged in the region overlapping the effective length portion of the front and rear elastic member and the front joining region, the third width elastic member contracts in the width direction and the front and rear elastic member causes the front and rear contraction. Directional shrinkage is easy to interlock. The front and rear elastic members make it easier for the wearer to stand up in the contracted portion, thereby further suppressing lateral leakage of excrement.

According to a preferred aspect, the widthwise length of the absorbent main body at the front edge of the rear waist region is longer than the widthwise length of the absorbent main body at the rear edge of the front waist region. you can

Generally, the distance between the peaks of the bulge of the wearer's buttocks is greater than the distance between the inguinal grooves. Since the widthwise length of the absorbent main body in the rear waist region is longer than the widthwise length of the absorbent main body in the front waist region, it is easy to appropriately cover the bulge of the wearer's buttocks. Side leakage can be suppressed by appropriately covering the buttocks.

According to a preferred aspect, the absorbent article further comprises a side joint portion that joins the outer portion of the front waist region and the outer portion of the rear waist region,
The back waist region may have a buttock cover extending toward the crotch region from the side joints.

Since the outer body is not joined to the outer side of the absorbent main body at the front end of the back waist region, there is a risk that the body may be pulled up rearward due to the movement of the wearer's legs or the like. Since the buttocks cover is provided, even when the front end of the rear waist area is pulled up rearward, the buttocks can be kept covered and side leakage from the buttocks can be suppressed.

(2) Overall Schematic Configuration of Absorbent Article Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. In addition, in the following description of the drawings, the same or similar reference numerals are given to the same or similar parts. However, it should be noted that the drawings are schematic, and the ratio of each dimension is different from the actual one. Therefore, specific dimensions and the like should be determined with reference to the following description. In addition, portions having different dimensional relationships and ratios may also be included between the drawings.

The absorbent article may be tape type or pants type. The absorbent article may be a disposable diaper or a shorts type sanitary napkin. The absorbent article of the first embodiment is a pants-type disposable diaper. FIG. 1 is a schematic plan view of a disposable diaper 10 according to this embodiment. The schematic plan view shown in FIG. 1 shows a stretched state in which the absorbent article 10 is stretched to a state in which wrinkles are not formed with the side joints 60 described later unfolded.

The absorbent article 10 has a front-rear direction L and a width direction W perpendicular to each other. The front-rear direction L is defined by the direction extending to the front side of the body and the rear side of the body. In other words, the front-rear direction L is the direction extending front-rear in the unfolded absorbent article 10 . In addition, the absorbent article 10 has a thickness direction T in which both the front-rear direction L and the width direction W are orthogonal.

The absorbent article 10 has a front waist region S1, a back waist region S2, and a crotch region S3. The front waist region S1 is a region facing the wearer's front waist (abdomen). The back waist region S2 is a region facing the wearer's back waist (back). The crotch region S3 is a region located in the wearer's crotch and arranged between the front waist region S1 and the back waist region S2.

In this embodiment, the absorbent article 10 may have an outer body 15 and an absorbent main body 40 . The outer body 15 is arranged at least in the front waist region S1 and the rear waist region S2 on the non-skin surface side of the absorbent main body 40 . The exterior body 15 may have a front exterior body 20 and a rear exterior body 30 . The front exterior body 20 is an exterior body arranged in the front waist region S1. The rear exterior body 30 is an exterior body that is separated from the front exterior body 20 in the front-rear direction L and arranged in the rear waist region S2.

In the front waist region S<b>1 and the back waist region S<b>2 , the outer body 15 extends outward in the width direction W from the absorbent main body 40 . In the crotch region S<b>3 , the absorbent main body 40 extends outward in the width direction W from the outer body 15 . The boundary of the front waist region S1 on the crotch region side is the edge of the crotch region side of the region where the front outer body 20 extends outward in the width direction W from the absorbent main body 40, and the crotch region of the back waist region S2. The boundary on the side is the edge on the crotch region side of the region where the rear exterior body 30 extends outward in the width direction W from the absorbent main body 40 . In addition, in the absorbent article 10 according to the present embodiment, the front exterior body 20 is arranged only in the front waist region S1, and the front edge 20F of the front exterior body 20 corresponds to the front edge S1F of the front waist region S1. , the rear edge 20R of the front exterior body 20 corresponds to the rear edge S1R of the front waist region S1. Further, the rear exterior body 30 is arranged only in the rear waist region S2, the front edge 30F of the rear exterior body 30 corresponds to the front edge S2F of the rear waist region S2, and the rear edge of the rear exterior body 30 corresponds to the front edge S2F of the rear waist region S2. 30R corresponds to the rear edge S2R of the rear waist region S2.

The front exterior body 20 and the rear exterior body 30 may be made of a sheet such as non-woven fabric, for example. The front exterior body 20 and the rear exterior body 30 each have an exterior skin sheet 25 located on the skin side and an exterior non-skin sheet 26 located on the non-skin side of the exterior skin sheet 25. good.

A side joint portion 60 joining the outer portion of the front waist region S1 in the width direction W and the outer portion of the rear waist region S2 in the width direction W may be provided. Here, FIG. 1 shows a state in which the side joints 60 are unjoined and the absorbent article 10 is unfolded. The side joints 60 may extend along the front-rear direction L in each of the front exterior body 20 and the rear exterior body 30 . The rear waist region S2 may be provided with a buttocks cover 35 extending from the side joints 60 toward the crotch region S3. The buttock cover 35 is a part of the rear exterior body 30, and is a portion that extends from the side joint portion 60 toward the crotch region S3.

In addition, the outer portion in the present invention is a portion occupying a certain range in the width direction W including the outer edge in the width direction W, and the outer edge is the outer edge in the width direction W. The inner portion in the present invention is a portion occupying a certain range in the width direction W including the inner edge in the width direction W, and the inner edge is the inner edge in the width direction W. Further, the front end portion and the rear end portion in the present invention are portions occupying a certain range in the front-rear direction L including edges in the front-rear direction L, and the front end edge and the rear end edge are edges in the front-rear direction L. The outer edge includes a leading edge and a trailing edge, and the outer edge includes a leading edge and a trailing edge.

As shown in FIG. 4, in the state where the side joints 60 are formed, the absorbent article 10 has a waist opening 71 through which the wearer's waist is passed, and a pair of waist openings into which the wearer's legs are respectively inserted. A leg opening 72 is formed. The waist opening 71 may be defined by a front edge S1F of the front waist region S1 and a rear edge S2R of the rear waist region S2. In addition, the leg openings 72 include the rear edge 20R of the front exterior body 20 that extends outward in the width direction W from the absorbent main body 40, and the leg opening 72 that extends outward in the width direction W from the absorbent main body 40. It may be defined by the front edge 30F of the rear exterior body 30 and the outer edge 40E of the absorbent main body 40 in the crotch region S3.

The absorbent main body 40 is arranged across the front exterior body 20 and the rear exterior body 30 on the skin surface side of the front exterior body 20 and the rear exterior body 30 . That is, the absorbent main body 40 extends over the front waist region S1, the back waist region S2, and the crotch region S3. The absorbent main body 40 may be configured separately from the front exterior body 20 and the rear exterior body 30 .

The length W402 in the width direction W of the absorbent main body 40 at the front edge S2F of the back waist region S2 may be longer than the length W401 in the width direction W of the absorbent main body 40 at the rear edge S1R of the front waist region S1. . Generally, the distance between the peaks of the bulge of the wearer's buttocks is greater than the distance between the inguinal grooves. Since the length W402 in the width direction W of the absorbent main body 40 at the front edge S2F of the back waist region S2 is longer than the length W401 in the width direction W of the absorbent main body 40 at the rear edge S1R of the front waist region S1, It is easy to appropriately cover the swelling of the wearer's buttocks. Side leakage can be suppressed by properly covering the buttocks. In addition, since the width direction W of the absorbent main body 40 at the rear edge of the front waist region S1 is relatively short, the dimension of the leg openings on the front waist region side can be increased, and the legs can be moved forward and backward. easier to move.

The absorbent main body 40 includes at least an absorbent core 50 . The absorbent core 50 may comprise, for example, ground pulp or superabsorbent polymer (SAP), or mixtures thereof. The absorbent core 50 is arranged at least in the crotch region S3. Preferably, the absorbent core 50 may extend from the front waist region S1 to the rear waist region S2 in the front-rear direction L. The absorbent core 50 may be covered with a core wrap. Furthermore, the absorbent main body 40 may have a main body skin sheet 41 positioned on the skin side of the absorbent core 50 and a main body non-skin sheet 42 positioned on the non-skin side of the absorbent core 50 . . The body skin sheet 41 may cover the absorbent core 50 on the skin side of the absorbent core 50 . The main body non-skin surface sheet 42 may cover the absorbent core 50 on the non-skin surface side of the absorbent core 50 .

The body skin sheet 41 may be made of a liquid-permeable sheet such as nonwoven fabric or perforated plastic film. The main body skin sheet 41 may be composed of one sheet. Alternatively, the main body skin sheet 41 may be composed of a laminated sheet in which a plurality of sheets are laminated together.

The main body non-skin sheet 42 may include a liquid-impermeable sheet. The main body non-skin sheet 42 may be composed of one sheet. Alternatively, the main body non-skin sheet 42 may be composed of a laminated sheet in which a plurality of sheets are laminated together. In this case, at least one of the plurality of sheets may have liquid impermeability.

The absorbent core 50 is arranged at least in the crotch region S3. Preferably, the absorbent core 50 may extend from the front waist region S1 to the rear waist region S2 in the front-rear direction L. The absorbent core 50 may be wrapped with a core wrap.

The absorbent main body 40 may have a front-rear elastic member 65 arranged on the outer side of the absorbent main body 40 and capable of stretching in the front-rear direction L. As shown in FIG. A plurality of the front and rear elastic members 65 may be provided at intervals in the width direction W. The front and rear elastic members 65 may be arranged outside the absorbent core 50 in the width direction W and may be arranged along the leg openings 72 . The front-rear elastic member 65 may be composed of, for example, a thread rubber that is stretchable in the front-rear direction L or an elastic sheet that is stretchable in the front-rear direction L. Alternatively, the front and rear elastic members 65 may be configured by the side sheets themselves, which are configured by stretchable sheets, for example. The front and rear elastic members 65 of the present embodiment are made of thread rubber, and are arranged between the main body skin sheet 41 and the main body non-skin sheet 42 in the thickness direction T. As shown in FIG.

The front and rear elastic members 65 are arranged in a stretched state on the outer side of the absorbent main body 40 . In the region where the front and rear elastic members 65 are arranged in a stretched state, a contracting force acts on the absorbent body 40 in the front-back direction L, and in the region where the front and rear elastic members 65 are not arranged in a stretched state, the absorbent body 40 is contracted. On the other hand, the force of contraction in the front-rear direction L does not act. In the present specification, the length of the region in the front-rear direction L where the force of contraction in the front-rear direction L is applied is also referred to as the “effective length” of the front-rear elastic member 65 . The effective length portion is a portion where wrinkles are formed by contraction of the front and rear elastic members 65 in the natural state of the absorbent article. FIG. 1 shows the range in the front-rear direction L of the effective length portion 66 of the front-rear elastic member 65 . The front edge of the effective length portion 66 overlaps the front exterior body 20 in the thickness direction, and the rear edge of the effective length portion 66 overlaps the rear exterior body 30 in the thickness direction.

The front exterior body 20 and the rear exterior body 30 may be configured to be stretchable in the width direction W. The front side exterior body 20 and the rear side exterior body 30 may be configured to be stretchable by an elastic member such as a width elastic member to be described later, or may be stretchable by the stretchable exterior skin sheet 25 or the exterior non-skin sheet 26. may be configured to

A width elastic member that can be stretched in the width direction W may be provided in the front waist region S1 and the rear waist region S2. The width elastic member may have a first width elastic member 61 and a second width elastic member 62 provided in the rear waist region S2, and a third width elastic member 63 provided in the front waist region S1. The first width elastic member 61 is arranged on the rear side of the second width elastic member 62 in the rear waist region S2. A plurality of width elastic members may be provided at intervals in the front-rear direction L. The width elastic member may be composed of a thread rubber stretchable in the width direction W or an elastic sheet stretchable in the width direction W, for example. Alternatively, the width elastic member may be composed of the absorbent main body 40 or the exterior body 15 itself composed of, for example, a stretchable sheet. The width elastic member may be provided on the absorbent main body 40 or may be provided on the exterior body 15 . The first width elastic member 61 and the second width elastic member 62 of the present embodiment are provided on the rear exterior body 30 , and the third width elastic member 63 is provided on the front exterior body 20 . The width elastic member is made of thread rubber, and is arranged between the outer skin sheet 25 and the outer non-skin sheet 26 in the thickness direction T. As shown in FIG.

The outer body 15 and the absorbent main body 40 configured in this way are joined in the joining region and are not joined in the non-joining region. At the rear end of the front waist region S1, a front joint region FA is provided in which the outer portion of the absorbent main body 40 and the exterior body 15 are joined. At the rear end portion of the front waist region S1, the outer portion of the absorbent main body 40 and the exterior body 15 are joined. Therefore, the outer body 15 cannot move with respect to the absorbent main body 40 at the rear end of the front waist region S1.

4 and 5 are diagrams schematically showing how the absorbent article according to the embodiment is worn. FIG. 4 is a diagram schematically showing a state in which the legs are extended, and FIG. 5 schematically shows a state in which the legs are bent. At the rear end of the front waist region S1 of the absorbent article according to the embodiment, the outer body 15 is less likely to move relative to the absorbent main body 40, and the angle α between the outer body 15 and the outer edge 40E of the absorbent main body 40 forms. is difficult to change. Therefore, the absorbent main body 40 in the front waist region S1 is less likely to deform in the width direction W when force is applied to the rear end portion of the front waist region S1 by the wearer's legs or the like during wearing. Therefore, it is easy to secure the length in the width direction W of the absorbent main body 40 in the front waist region S1 and secure the absorbent area in the front waist region S1 side.

The front joint region FA may be provided in a region extending forward from the rear edge of the front waist region S1 and extending inward in the width direction W from the outer edge of the absorbent main body 40 . The rear edge of the front joint area FA may coincide with the rear edge of the front waist area S1, or may be spaced apart from the rear edge of the front waist area S1. The front edge of the front joint area FA may coincide with the front edge of the front waist area S1, or may be spaced apart from the front edge of the front waist area S1. The front joining area FA may extend from one outer edge of the absorbent body 40 to the other outer edge. The outer edge of the front joining area FA may coincide with the outer edge of the absorbent main body 40, or may be located in a range from the outer edge of the absorbent main body 40 to the inner side in the width direction of 3 to 5 mm.

The front end portion of the rear waist region S2 is provided with a rear non-bonded region NR where the outer portion of the absorbent main body 40 and the exterior body 15 are not bonded. At the front end portion of the back waist region S2, the outer portion of the absorbent main body 40 and the exterior body 15 are not joined. Therefore, the outer body 15 can move with respect to the absorbent main body 40 at the front end of the back waist region S2.

At the front end of the back waist region S2, the outer body 15 is movable with respect to the absorbent main body 40, and the angle β formed between the outer body 15 and the outer edge 40E of the absorbent main body 40 is variable. By deforming so as to increase the angle β, the leg opening can be enlarged. In addition, when the absorbent main body 40 moves inward in the width direction W in the rear non-bonded region NR, the leg openings 72 also become larger. Therefore, when inserting the leg or moving the leg, the opening 72 around the leg can be enlarged, and the leg can be smoothly inserted or moved.

The rear non-joining region NR may be provided in a region extending rearward from the front edge 30F of the rear exterior body 30 and extending inward in the width direction W from the outer edge 40E of the absorbent main body 40 . The front edge of the rear non-bonded region NR may coincide with the front edge of the rear waist region S2, or may be spaced apart from the front edge of the rear waist region S2. The rear edge of the rear non-bonded region NR may be positioned inside in the front-rear direction L of the rear edge of the rear waist region S2. The rear non-bonded region NR may extend from one lateral edge of the absorbent body 40 to the other lateral edge. The outer edge of the rear non-bonded region NR may coincide with the outer edge of the absorbent main body 40, or may be located in a range from the outer edge of the absorbent main body 40 to the inner side in the width direction of 3 to 5 mm.

The inner edge of the rear non-bonded region NR may be positioned in the width direction W at the same position as or inside the outer edge of the absorbent main body 40 at the rear edge of the front waist region S1. The rear non-bonded region NR functions as a region where the legs can be moved because the absorbent main body 40 and the exterior body are not bonded. The inner edge of the rear non-bonded region NR is located at the same position or inside the outer edge of the absorbent main body 40 at the rear edge of the front waist region S1 in the width direction W, so that the leg circumference of the front waist region S1 side A region in which the leg can be moved can be similarly secured by the opening and the leg opening on the side of the rear waist region S2. While the rear waist region S2 secures an area covering the buttocks, the front waist region S1 and the rear waist region S2 similarly secure regions for ensuring ease of movement and insertion of the legs.

A first width elastic member 61 that can be stretched in the width direction W may be arranged in the rear non-joining region NR. The first width elastic member 61 only needs to overlap the rear non-joining region NR in the thickness direction. Since the first width elastic member 61 is provided, the front end portion of the rear waist region S2 contracts in the width direction W, making it easier to fit the legs of the wearer. At this time, the front end portion of the rear waist region S2 can be deformed so that the leg openings 72 widen. Therefore, it is possible to prevent the first width elastic member 61 from being too tightly fitted to the leg due to the contraction of the first width elastic member 61, and to prevent deterioration of the feeling of wearing. It is possible to achieve both an appropriate fit to the legs and ease of movement of the legs. Further, the first width elastic member 61 may extend outward in the width direction W beyond the rear non-joining region NR in order to ensure good fit to the leg.

The length in the front-rear direction L of the rear non-joining region NR may be 3 mm or more. By setting the length of the rear non-joining region NR in the front-rear direction L to 3 mm or more, it is possible to improve the easiness of movement of the leg and the easiness of inserting the leg. More preferably, the length in the front-rear direction L of the rear non-joining region NR may be 5 mm or more and 20 mm or less. The range of 5 mm or more and 20 mm or less rearward from the front edge of the rear waist region S2 is a region where force due to leg movement is more likely to be applied particularly when the legs are inserted or the legs are moved. Since the length of the back non-bonded region NR in the front-rear direction L is 3 mm or more, the wearer can easily insert the leg when wearing the garment and move the leg more smoothly when wearing the garment. More preferably, the length in the front-rear direction L of the rear non-joining region NR may be 10 mm or more.

The range of the rear non-joint region NR in the front-rear direction L may be up to 30% of the entire front-rear direction L of the side joint 60 rearward from the crotch region side edge of the side joint 60 . The range up to 30% of the entire length of the front-rear direction L of the side joint 60 toward the rear from the edge of the crotch region of the side joint 60 is particularly affected by the movement of the leg when the leg is inserted or moved. This is an area where it is easy to get Therefore, the wearer can easily insert the leg smoothly when wearing it, and can move the leg smoothly when wearing it.

The rear waist region S2 may be provided with a buttocks cover 35 extending from the side joints 60 toward the crotch region S3. The outer body 15 is not joined to the outer side of the absorbent main body 40 at the front end of the rear waist region S2, and may be pulled up rearward by the wearer's leg movements or the like. Since the buttock cover 35 is provided, even when the front end of the rear waist region S2 is pulled up rearward, the buttocks can be kept covered and side leakage from the buttocks can be suppressed.

The effective length portion 66 of the front and rear elastic member 65 may overlap the front joining area FA in the thickness direction. The front and rear elastic members 65 are arranged on the outer side of the absorbent main body 40 and arranged around the legs of the wearer. Since the effective length portion 66 of the front/rear elastic member 65 overlaps the front joint area FA, contraction in the width direction W of the exterior body 15 and contraction in the front/rear direction L by the front/rear elastic member 65 are likely to be interlocked. The front and rear elastic members 65 make it easier for the contracted portion to stand up toward the wearer, thereby suppressing lateral leakage of excrement from the front waist region side.

A third width elastic member 63 may be arranged in a region where the effective length portion 66 of the front and rear elastic member 65 and the front joint region FA overlap. Since the third width elastic member is arranged in an area overlapping the effective length portion 66 of the front and rear elastic member 65 and the front joint area FA, contraction in the width direction W by the third width elastic member and front and rear direction by the front and rear elastic member 65 are achieved. The contraction of L is likely to be interlocked. The front and rear elastic members 65 make it easier for the wearer to stand up in the contracted portion, thereby further suppressing lateral leakage of excrement from the front waist region side.

A first rear bonding region RA1 where the absorbent main body 40 and the exterior body 15 are bonded may be provided inside the rear non-bonding region NR in the width direction W. A boundary between the rear non-bonded region NR and the first rear bonded region RA1 may be located outside in the width direction W of the outer edge of the absorbent core 50 . The first post-bonding region RA1 may be provided throughout the width direction W of the absorbent core 50 . When the outer body 15 is pulled outward in the width direction W at the time of wearing, the absorbent main body 40 is pulled outward in the width direction W via the outer body 15 . At this time, the outer edge of the absorbent core 50 overlaps the first rear-bonded region RA1 where the outer body 15 and the absorbent main body 40 are bonded. Therefore, when the outer body 15 is pulled outward in the width direction W at the time of wearing, the outer edge of the absorbent core 50 can also be pulled outward in the width direction W. can be easily secured, and leakage can be further suppressed.

A second rear bonding region RA2 where the absorbent main body 40 and the exterior body 15 are bonded may be provided on the rear side of the rear non-bonding region NR. The second rear bonding region RA2 is provided in a region extending rearward from the front edge of the rear non-bonding region NR and extending inward in the width direction W from the outer edge of the absorbent main body 40 . The exterior body 15 and the absorbent main body 40 are bonded in a second rear bonding area RA2 provided on the rear side of the rear non-bonding area NR. It is possible to suppress the problem that the outer body 15 and the absorbent main body 40 fall down inward in the width direction W, and it is easy to properly apply the outer body 15 and the absorbent main body 40 to the wearer's body. The outer edge of the second rear bonding area RA2 may coincide with the outer edge of the absorbent main body 40, or may be located in a range from the outer edge of the absorbent main body 40 to the inner side in the width direction of 3 to 5 mm. .

The length in the width direction W of the second rear bonding region RA2 may be longer than the length in the width direction W of the rear non-bonding region NR. The inner edge of the second rear bonding region RA2 may extend inward in the width direction W from the inner edge of the rear non-bonding region NR. The length in the width direction W of the second rear bonding region RA2 where the outer packaging 15 and the absorbent main body 40 are bonded is the width direction W of the rear non-bonding region NR where the outer packaging 15 and the absorbent main body 40 are not bonded. It is longer than the length, and the contraction in the width direction W of the exterior body 15 can be easily transmitted to the absorbent main body 40 . Therefore, when the exterior body 15 is pulled outward in the width direction W at the time of wearing, the absorbent main body 40 can also be pulled outward in the width direction W, and the length of the absorbent main body 40 in the width direction W can be ensured.

The effective length portion 66 of the front and rear elastic member 65 may overlap the second rear bonding area RA2. The front and rear elastic members 65 are arranged on the outer side of the absorbent main body 40 and arranged around the legs of the wearer. Since the effective length portion 66 of the front/rear elastic member 65 overlaps the second rear joining region RA2, contraction in the width direction W of the exterior body 15 and contraction in the front/rear direction L by the front/rear elastic member 65 are likely to be interlocked. The portion that contracts due to the front and rear elastic members 65 can easily rise toward the wearer, and leakage in the rear waist region can be further suppressed.

A second width elastic member may be arranged in a region where the effective length portion 66 of the front and rear elastic member 65 and the second rear joint region RA2 overlap. Since the second width elastic member is arranged in the region overlapping the effective length portion 66 of the front and rear elastic member 65 and the second rear joint region RA2, the contraction in the width direction W by the second width elastic member and the contraction by the front and rear elastic member 65 Contraction in the front-rear direction L is likely to be interlocked. The front and rear elastic members 65 make it easier for the wearer to stand up in the contracted portion, thereby further suppressing lateral leakage of excrement in the rear waist region.

Although the present invention has been described in detail using the above embodiments, it will be apparent to those skilled in the art that the present invention is not limited to the embodiments described herein. The present invention can be implemented with modifications and variations without departing from the spirit and scope of the invention defined by the claims. Accordingly, the descriptions herein are for the purpose of illustration and description, and are not intended to have any limiting meaning with respect to the present invention.

In the absorbent article according to the modification, the outer body may be formed by integrating the front outer body 20 and the rear outer body 30 and extending from the front waist region S1 to the rear waist region S2. The outer body according to the modification extends outward in the width direction W from the absorbent main body 40 in the front waist region S1 and the front waist region S1, and is positioned inside the absorbent main body 40 in the width direction W in the crotch region. you can As described above, in the absorbent article according to the modified example as well, since the angle α formed by the absorbent main body 40 and the exterior body at the rear end portion of the front waist region S1 is less likely to change, the absorption area of the front waist region S1 is ensured, Leakage can be suppressed. In addition, since the angle β formed by the absorbent main body 40 and the exterior body at the front end of the rear waist region tends to change, the leg openings can be enlarged on the rear waist region side to allow the legs to move smoothly.

It is possible to provide an absorbent article that can secure an absorbent area in the front waist region and suppress leakage.

10 Absorbent article 15 Exterior body 20 Front exterior body 30 Back exterior body 40 Absorbent main body 50 Absorption core 60 Side joint 61 First width elastic member 62 Second width elastic member 63 Third width elastic member 65 Front and rear elastic member NR Rear unbonded region RA1 First rear bonded region RA2 Second rear bonded region FA Front bonded region S1 Front waist region S2 Back waist region S3 Crotch region L Front-back direction W Width direction

Claims (12)

forward and backward, and
a width direction orthogonal to the front-rear direction;
a front waist region;
a rear waist region;
a crotch region disposed between the front waist region and the back waist region;
an absorbent main body arranged across the crotch region, the front waist region, and the back waist region;
An absorbent article having an outer body disposed at least in the front waist region and the back waist region on the non-skin surface side of the absorbent main body,
A rear non-bonded region in which the outer portion of the absorbent main body and the exterior body are not bonded is provided at the front end portion of the back waist region,
The rear end of the front waist region is provided with a front joint region in which the outer portion of the absorbent main body and the exterior body are joined,
A first rear joint region in which the absorbent main body and the exterior body of the rear waist region are joined is provided inside the rear non-joint region in the width direction,
the outer edge of the front bonding area is located outside the boundary between the rear non-bonding area and the first rear bonding area in the width direction and inside the outer edge of the rear non-bonding area in the width direction ;
The rear non-bonded region extends rearward from the front edge of the rear waist region,
The absorbent article , wherein the length in the front-rear direction of the rear non-bonded region is 5 mm or more and 20 mm or less . forward and backward, and
a width direction orthogonal to the front-rear direction;
a front waist region;
a rear waist region;
a crotch region disposed between the front waist region and the back waist region;
an absorbent main body arranged across the crotch region, the front waist region, and the back waist region;
An absorbent article having an outer body disposed at least in the front waist region and the back waist region on the non-skin surface side of the absorbent main body,
A rear non-bonded region in which the outer portion of the absorbent main body and the exterior body are not bonded is provided at the front end portion of the back waist region,
The rear end of the front waist region is provided with a front joint region in which the outer portion of the absorbent main body and the exterior body are joined,
A first rear joint region in which the absorbent main body and the exterior body of the rear waist region are joined is provided inside the rear non-joint region in the width direction,
the outer edge of the front bonding area is located outside the boundary between the rear non-bonding area and the first rear bonding area in the width direction and inside the outer edge of the rear non-bonding area in the width direction;
The absorbent article further comprises a side joint portion that joins the outer portion of the front waist region and the outer portion of the rear waist region,
The range in the front-rear direction of the rear non-joint region is a range up to 30% of the entire front-rear direction of the side joint portion toward the rear from the edge of the crotch region side of the side joint portion. . forward and backward, and
a width direction orthogonal to the front-rear direction;
a front waist region;
a rear waist region;
a crotch region disposed between the front waist region and the back waist region;
an absorbent main body arranged across the crotch region, the front waist region, and the back waist region;
An absorbent article having an outer body disposed at least in the front waist region and the back waist region on the non-skin surface side of the absorbent main body,
A rear non-bonded region in which the outer portion of the absorbent main body and the exterior body are not bonded is provided at the front end portion of the back waist region,
The rear end of the front waist region is provided with a front joint region in which the outer portion of the absorbent main body and the exterior body are joined,
A first rear joint region in which the absorbent main body and the exterior body of the rear waist region are joined is provided inside the rear non-joint region in the width direction,
the outer edge of the front bonding area is located outside the boundary between the rear non-bonding area and the first rear bonding area in the width direction and inside the outer edge of the rear non-bonding area in the width direction;
The absorbent main body has an absorbent core,
The absorbent article, wherein a boundary between the rear non-joining region and the first rear joining region is located outside the outer edge of the absorbent core in the width direction. The absorbent article according to any one of claims 1 to 3 , wherein a first width elastic member that is stretchable in the width direction is arranged in the rear non-bonded region. 5. The method according to any one of claims 1 to 4, wherein a second rear joining region in which the absorbent main body and the exterior body are joined is provided on the rear side of the rear non-joining region. absorbent article. The exterior body of the rear waist region is stretchable in the width direction,
6. The absorbent article according to claim 5 , wherein the widthwise length of the second posterior bonded region is longer than the widthwise length of the posterior non-bonded region. The exterior body of the rear waist region is stretchable in the width direction,
The absorbent main body has a front-rear elastic member disposed on the outer side of the absorbent main body and capable of stretching in the front-rear direction,
7. The absorbent article according to claim 5 , wherein the effective length portion of the front and rear elastic members overlaps the second rear joint region in the thickness direction. 8. The absorbent article according to claim 7 , wherein a second width elastic member capable of stretching in the width direction is arranged in a region where the effective length portion of the front and rear elastic members overlaps the second rear joint region. The exterior body of the front waist region is stretchable in the width direction,
The absorbent main body has a front-rear elastic member disposed on the outer side of the absorbent main body and capable of stretching in the front-rear direction,
The absorbent article according to any one of claims 1 to 8, wherein the effective length portion of the front and rear elastic members overlaps the front joint region in the thickness direction. 10. The absorbent article according to claim 9 , wherein a third width elastic member stretchable in the width direction is arranged in a region where the effective length portion of the front and rear elastic members overlaps the front joint region. The widthwise length of the absorbent main body at the front edge of the back waist region is longer than the widthwise length of the absorbent main body at the rear edge of the front waist region. 11. The absorbent article according to any one of 10 . The absorbent article further comprises a side joint portion that joins the outer portion of the front waist region and the outer portion of the rear waist region,
The absorbent article according to any one of claims 1 to 11 , wherein the back waist region is provided with a buttocks cover extending toward the crotch region from the side joints.

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