JP6913131B2 - Disposable diapers - Google Patents

Description

The present invention relates to disposable diapers for infants or adults.

Conventionally, an exterior member having a front body portion, a rear body portion, and a crotch portion located between them, and an absorbent portion provided in the crotch portion of the exterior member and arranged between the top sheet and the back sheet and these. Disposable diapers with an absorbent body having a core are known. Such disposable diapers are generally formed by adhering an absorbent body to an exterior member. For example, Patent Document 1 discloses an absorbent article in which an absorbent main body and an exterior member are bonded by an adhesive that is intermittently coated in a stripe shape. In Patent Document 2, the adhesive region between the absorbent main body and the exterior member is the ventral adhesive portion, the dorsal adhesive portion, the inseam adhesive portion, the inseam adhesive portion and the ventral adhesive portion, and the inseam adhesive portion and the dorsal adhesive portion. An absorbent article is disclosed which is divided into an intermediate adhesive portion between the portions and formed so that the lengths of the divided adhesive portions in the width direction are different by three or more.

Japanese Unexamined Patent Publication No. 2005-095261 Japanese Unexamined Patent Publication No. 2005-0876222

Since disposable diapers are worn so as to cover the waist of the wearer by applying them to the crotch of the wearer, forces in various directions act depending on the part. Therefore, in a disposable diaper in which the absorbent body is attached to the exterior member, if the force acting on the exterior member is transmitted to the absorbent body as it is by the movement of the wearer, the absorbent body is distorted or the absorbent body has many wrinkles. It may be formed, and the wearing feeling and fit may be deteriorated. The present invention has been made in view of the above circumstances, and an object of the present invention is a disposable diaper in which an absorbent main body is attached to an exterior member, in which distortion and wrinkle formation of the absorbent main body are suppressed, and a feeling of wearing is achieved. The purpose is to provide disposable diapers with excellent fit.

The disposable diaper of the present invention that has been able to solve the above problems is provided on an exterior member having a front body portion, a rear body portion, and a crotch portion located between them, and a crotch portion of the exterior member. A disposable diaper with a topsheet and backsheet and an absorbent body with an absorbent core arranged between them; the absorbent body is anterior with no absorbent cores at the front and rear ends, respectively. It has an edge and a posterior edge; the anterior edge has one side and the other side in the width direction bonded to the exterior member to form a front bonding area, between which the front side is not bonded to the exterior member. A non-adhesive region is formed; the posterior margin is a posterior non-adhesive region in which one side and the other side in the width direction are adhered to the exterior member to form a posterior adhesive region, between which the posterior non-adhesive region is not adhered to the exterior member. Is formed; the absorbent body has a first intermediate non-adhesive region formed between the anterior adhesive region and the posterior adhesive region on one side in the width direction and not adhered to the exterior member, and on the other side in the width direction. It is characterized in that a second intermediate non-adhesive region that is not adhered to the exterior member is formed between the front adhesive region and the posterior adhesive region.

In the disposable diaper of the present invention, the front side edge portion of the absorbent body is adhered to the exterior member in the front side adhesive region, and the rear side edge portion is adhered to the exterior member in the rear side adhesive region. It is possible to prevent the rear edge portion from rolling up and to prevent the front and rear ends of the absorbent body from peeling off. On the other hand, by providing a front non-adhesive region between the front adhesive region on one side and the other side in the width direction, and providing a posterior non-adhesive region between the posterior adhesive region on one side and the other side in the width direction. It is possible to suppress the formation of a large number of wrinkles in the front non-adhesive region and the posterior non-adhesive region, thereby improving the wearing feeling of the disposable diaper. Then, on one side in the width direction, a first intermediate non-adhesive region that is not adhered to the exterior member is formed between the front side adhesive region and the rear side adhesive region, and on the other side in the width direction, the front side adhesive region and the rear side adhesive region are formed. By forming a second intermediate non-adhesive region that is not adhered to the exterior member, even if the portion along the edge of the leg opening of the exterior member is distorted when the wearer moves the leg, the distortion is absorbed. It becomes difficult to transmit to the sexual body, and the fit of the absorbent body to the wearer's crotch can be improved.

The front torso and / or the posterior torso are provided with a torso elastic member extending in the width direction, and at least a part of the torso elastic member is arranged so as to overlap the front adhesive region or the posterior adhesive region. preferable. When the torso elastic member is provided on the front torso or the posterior torso of the exterior member, the torso elastic member can improve the fit around the torso of the disposable diaper, but at the same time, the anterior torso and the rear. A contraction force in the width direction acts on the side body. However, according to the disposable diaper of the present invention, even in such a case, the anterior non-adhesive region is formed on the front edge portion and the posterior non-adhesive region is formed on the posterior margin portion, whereby the absorbent main body is formed. It is possible to suppress the formation of many wrinkles on the anterior margin and the posterior margin.

The absorbent body is preferably bonded to the exterior member between the first intermediate non-adhesive region and the second intermediate non-adhesive region to form an intermediate adhesive region. By providing the intermediate adhesive region, the absorbent main body can be stably fixed to the exterior member. In addition, it is possible to prevent the absorbent body from being lifted from the exterior member and distorting the absorbent body, so that the fit of the absorbent body to the wearer's crotch can be improved.

The amount of adhesive applied per unit area of the front adhesive region and the posterior adhesive region is preferably smaller than the amount of adhesive applied per unit area of the intermediate adhesive region. In disposable diapers, the anterior and posterior torso are more susceptible to forces from various directions than the crotch, but by reducing the amount of adhesive applied in the anterior and posterior adhesive areas, It is possible to improve the followability to such a force and the flexibility in the front bonding region and the rear bonding region.

The front bonding region and the rear bonding region are preferably provided apart from the intermediate bonding region. If the front adhesive region and the posterior adhesive region are provided apart from the intermediate adhesive region, even if distortion occurs in each adhesive region, the distortion is less likely to be transmitted to the adjacent adhesive region, and the wearer of the absorbent body can use it. It becomes easier to maintain the adhesion to the crotch part.

The intermediate adhesive region preferably has an adhesive pattern in which linear adhesives extending in the width direction are arranged in a plurality of rows in the front-rear direction. If the intermediate adhesive region has such an adhesive pattern, the absorbent body tends to bend in the front-rear direction along the wearer's crotch, and the absorbent body fits and feels in the wearer's crotch. Can be enhanced.

The front adhesive region and the posterior adhesive region preferably have an adhesive pattern in which a plurality of rows of linear adhesives extending in the front-rear direction are arranged in the width direction. If the front adhesive region and the posterior adhesive region have such an adhesive pattern, it becomes easier to counter the force acting in the width direction of the diaper while ensuring breathability, and the absorbent body becomes an exterior member. It becomes difficult to peel off from. Further, the force in the width direction from the front side body portion and the rear side body part is less likely to be transmitted to the absorbent main body, and the formation of wrinkles in the front side bonding region and the rear side bonding region can be suppressed.

It is preferable that the absorbent body is provided with a crotch elastic member that overlaps with the first intermediate non-adhesive region or the second intermediate non-adhesive region and extends in the front-rear direction. By providing the crotch elastic member in the absorbent body, both sides in the width direction of the absorbent body are lifted toward the wearer's skin, thereby improving the fit of the absorbent body to the wearer's crotch.

The exterior member is formed in a pants shape with a waist opening and a pair of leg openings, which extends along the anterior edge of the leg opening and extends across the absorbent body in the width direction. An anterior leg elastic member and a rear leg elastic member extending along the posterior edge of the leg opening and extending across the absorbent body in the width direction are provided, and the anterior leg elastic member and the rear leg It is preferable that the partially elastic members are arranged so as not to overlap the front bonding region and the rear bonding region. By providing the front leg elastic member and the rear leg elastic member in this way, the contractile force of the front leg elastic member and the rear leg elastic member is less likely to be transmitted to the absorbent main body, and the leg opening of the exterior member Even if the part along the edge of the body is distorted, it becomes easier to maintain the fit of the absorbent body to the wearer's crotch.

In the disposable diaper of the present invention, the front side edge portion of the absorbent body is adhered to the exterior member in the front side adhesive region, and the rear side edge portion is adhered to the exterior member in the rear side adhesive region. It is possible to prevent the rear edge portion from rolling up and to prevent the front and rear ends of the absorbent body from peeling off. On the other hand, by providing a front non-adhesive region between the front adhesive region on one side and the other side in the width direction, and providing a posterior non-adhesive region between the posterior adhesive region on one side and the other side in the width direction. It is possible to suppress the formation of a large number of wrinkles in the front non-adhesive region and the posterior non-adhesive region, thereby improving the wearing feeling of the disposable diaper. Then, on one side in the width direction, a first intermediate non-adhesive region that is not adhered to the exterior member is formed between the front side adhesive region and the rear side adhesive region, and on the other side in the width direction, the front side adhesive region and the rear side adhesive region are formed. By forming a second intermediate non-adhesive region that is not adhered to the exterior member, even if the portion along the edge of the leg opening of the exterior member is distorted when the wearer moves the leg, the distortion is absorbed. It becomes difficult to transmit to the sexual body, and the fit of the absorbent body to the wearer's crotch can be improved.

An example of the disposable diaper of the present invention is shown, and a perspective view of the disposable pants type diaper is shown. A plan view is shown from the side surface of the skin showing a state in which the front body portion and the rear body portion of the disposable diaper shown in FIG. 1 are unbonded and unfolded. A plan view showing a state in which the front body portion and the rear body portion of the disposable diaper shown in FIG. 1 are unbonded and unfolded is shown from the outer surface. The IV-IV cross-sectional view of the disposable diaper shown in FIGS. 2 and 3 is shown. The plan view of the absorbent body of the disposable diaper shown in FIG. 3 is shown.

The disposable diaper of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments shown in the drawings.

1 to 5 show a pants-type disposable diaper as an example of the disposable diaper of the present invention. FIG. 1 shows a perspective view of a disposable diaper, and FIG. 2 shows a state in which the front body and the rear body of the disposable diaper shown in FIG. FIG. 3 is a view showing a state in which the front body portion and the rear body portion of the disposable diaper shown in FIG. 1 are disjointed and developed into a flat surface, and FIG. 2 and the IV-IV cross-sectional view of the disposable diaper shown in FIG. 3 are shown, and FIG. 5 shows a plan view of the absorbent body of the disposable diaper shown in FIG. In the drawings, the arrow x represents the width direction, the arrow y represents the front-back direction, and the direction perpendicular to the surface formed by the arrows x and y represents the thickness direction z.

The disposable diaper 1 has an exterior member 2 composed of a front body portion P, a rear side body portion Q, and a crotch portion R located between them. In the disposable diaper 1 shown in the drawing, the exterior member 2 has a waist opening 3 and a pair of leg openings 4 and is formed in a pants shape. The waist opening 3 is an opening for passing the wearer's torso, and the leg opening 4 is an opening for passing the wearer's legs.

In the exterior member 2, the front torso P corresponds to the portion that is applied to the ventral side of the wearer when wearing the diaper, and the posterior torso Q is the portion that is applied to the back side of the wearer when wearing the diaper. Corresponds to. The crotch portion R is located between the front side torso P and the posterior torso Q, and corresponds to a portion to be applied to the wearer's crotch. The crotch portion R is a portion located in the middle of the exterior member 2 divided into three in the front-rear direction, and is not joined to each other on both sides in the width direction x when formed in the shape of pants. When the disposable diaper is a pants-type diaper, the exterior member 2 is formed in a pants shape by, for example, joining the front body portion P and the rear side body portion Q at the joint portions 11 at both ends in the width direction x.

In the disposable diaper, the front-back direction y means the direction from the front side body P to the rear side body Q, and corresponds to the front-back direction of the wearer's crotch when wearing the diaper. The width direction x corresponds to the left-right direction of the wearer when wearing the diaper. The skin side of a disposable diaper means the side of the disposable diaper that faces the skin of the wearer when the diaper is worn. The outer surface of a disposable diaper means the surface of the disposable diaper that faces the opposite side of the wearer when the diaper is worn.

The exterior member 2 may be composed of only one layer or may be composed of a plurality of layers. Preferably, the exterior member 2 is composed of an outer sheet 5 and an inner sheet 6 laminated on the skin side surface of the outer sheet 5.

An absorbent main body 7 is provided on the crotch portion R of the exterior member 2. The absorbent body 7 has a topsheet 8 and a backseat 9 and an absorbent core 10 arranged between them (see FIG. 4). The top sheet 8 is arranged on the wearer side of the absorbent core 10, and the back sheet 9 is arranged on the outside (opposite side of the wearer) of the absorbent core 10 and is adhered to the exterior member 2. The absorbent body 7 is provided on the skin side surface of the exterior member 2 and is adhered to the skin side surface of the exterior member 2. The absorbent main body 7 may be present at least in the crotch portion R of the exterior member 2, and preferably extends to the front side body portion P and / or the rear side body portion Q. The absorbent body 7 may be formed in a substantially hourglass shape or a substantially rectangular shape, for example.

The shape (planar shape) of the absorbent core 10 is not particularly limited. Examples of the shape of the absorbent core 10 include a substantially rectangular shape, an hourglass shape, a gourd shape, a battledore shape, and the like. In the drawing, the absorbent core 10 is formed in a substantially rectangular shape.

It is preferable that the absorbent body 7 is provided with rising flaps 12 on both sides in the width direction x (see FIGS. 2 and 4). By providing the rising flap 12, it is possible to prevent lateral leakage of excrement such as urine. It is preferable that the standing elastic member 13 is provided at the upper end portion (the end portion on the wearer side) in the state where the rising flap 12 is raised. The contraction force of the elastic member 13 for standing up makes it easier for the rising flap 12 to stand up.

As shown in FIGS. 1 to 3, it is preferable that the front body portion P and the rear body portion Q of the exterior member 2 are provided with a plurality of body elastic members 24 extending in the width direction x. The body elastic member 24 is provided between the waist opening 3 and the leg opening 4. The torso elastic member 24 enhances the fit around the torso of the wearer. Of the body elastic members 24, elastic members provided at narrow intervals in the front-rear direction y along the edge of the waist opening 3 may be provided as the waist elastic members 25, thereby along the waist circumference of the wearer. Waist gathers are formed to prevent leakage of excrement such as urine from the back side and abdominal side. In FIGS. 1 to 3, the lumbar elastic member 25 is provided at a narrower interval in the front-rear direction y than the body elastic member 24.

It is preferable that the exterior member 2 is provided with the leg elastic member 26 along the edge of the leg opening 4. In particular, when the disposable diaper of the present invention is a pants-type diaper, it is preferable that the leg elastic member 26 is provided in this way. In the drawings, the leg elastic member 26 includes a front leg elastic member 26F provided along the front edge of the leg opening 4 and a rear leg elasticity provided along the posterior edge of the leg opening 4. It is composed of a member 26B. The front leg elastic member 26F and the rear leg elastic member 26B provide the elastic member over substantially the entire circumference of the edge of the leg opening 4. The leg elastic member 26 forms leg gathers along the circumference of the wearer's legs to prevent leakage of excrement such as urine from the crotch. In the drawing, the front leg elastic member 26F and the rear leg elastic member 26B are provided so as to be separated from each other, but the front leg elastic member 26F and the rear leg elastic member 26B are in contact with each other or intersect with each other. You may.

The body elastic member 24, the lumbar elastic member 25, and the leg elastic member 26 provided on the exterior member 2 are outside when the exterior member 2 is composed of the outer sheet 5 and the inner sheet 6 as shown in the drawing. It is preferably arranged between the sheet 5 and the inner sheet 6.

As each elastic member provided in the disposable diaper, an elastic elastic material used for a normal disposable diaper such as polyurethane thread, polyurethane film, and natural rubber can be used. Each elastic member is preferably fixed to the diaper in a stretched state, and is preferably fixed with an adhesive such as a hot melt adhesive. For example, a polyurethane yarn having a fineness of 40 to 1,240 dtex is stretched to a magnification of 1.1 to 5.0 times, arranged, and fixed. As the adhesive, it is preferable to use a rubber-based hot melt adhesive. The magnification is 1.0 times in the non-stretched state.

As shown in FIG. 5, the absorbable main body 7 has a front side edge portion 14 and a rear side edge portion 15 at the front end portion and the rear end portion, respectively, in which the absorbable core 10 does not exist. That is, the absorptive body 7 is formed with a front side edge portion 14 formed in front of the absorptive core 10 and a posterior side edge portion 15 formed behind the absorptive core 10. The front side edge portion 14 is defined as a portion including the front end of the absorbent body 7, and the rear edge portion 15 is defined as a portion including the rear end of the absorbent body 7. The front side edge portion 14 and the rear side edge portion 15 may be formed by overlapping the top sheet 8 and the back sheet 9, and the top sheet 8 is formed longer than the back sheet 9 in the front-rear direction y, and the top sheet 8 is formed. May be formed by folding back at the front end or the rear end of the absorbent body 7, the back sheet 9 is formed longer than the top sheet 8 in the front-rear direction y, and the back sheet 9 is the front side of the absorbent body 7. It may be formed by folding back at the end or the rear end. By forming the front side edge portion 14 and the rear side edge portion 15 on the absorbent body 7, urine or the like absorbed by the absorbent core 10 is less likely to leak from the front end or the posterior end of the absorbent body 7.

The front side edge portion 14 and the rear side edge portion 15 are preferably formed with a certain length in the front-rear direction y. Specifically, the length (shortest length) of the front side edge portion 14 and the rear side edge portion 15 in the anteroposterior direction y is preferably 3 mm or more, more preferably 5 mm or more, further preferably 8 mm or more, thereby absorbing. It becomes difficult for urine or the like to leak from the front end or the rear end of the sex body 7. It should be noted that even if the lengths of the front side edge portion 14 and the rear side edge portion 15 in the front-rear direction y become too long, it may be an obstacle. The length in the direction y is preferably 40 mm or less, more preferably 30 mm or less, and even more preferably 25 mm or less. The length described here is a state in which the elastic member provided in the disposable diaper is completely stretched (that is, a state in which the elastic member is removed or a state in which the elastic member is finely cut so that the contractile force of the elastic member is not exhibited. ). For various other lengths and positions described later, the values measured under the same conditions are used.

When the front side edge portion 14 and the rear side edge portion 15 are provided on the absorbent body 7 as described above, the front end and the rear end of the absorbent body 7 may be rolled up so as not to interfere with the wearer. It is preferable to bond the front side edge portion 14 and the rear side edge portion 15 to the exterior member 2. However, since the front side edge portion 14 and the rear side edge portion 15 have low rigidity due to the absence of the absorbent core 10, when the front side edge portion 14 and the rear side edge portion 15 are bonded to the exterior member 2, the front side edge portion 14 and the rear side edge portion 15 are bonded to the exterior member 2. A large number of wrinkles are likely to be formed on the front side edge portion 14 and the rear side edge portion 15 by directly receiving the force from the exterior member 2. When such wrinkles hit the wearer's skin, they cause a decrease in wearing feeling. In particular, when the front body portion P and the rear side body portion Q of the exterior member 2 are provided with the body portion elastic member 24 extending in the width direction x, the contraction force of the body portion elastic member 24 absorbs the front side edge of the main body 7. Wrinkles are likely to be formed by being transmitted to the portion 14 and the posterior margin portion 15.

Therefore, in the disposable diaper 1 of the present invention, both sides of the front side edge portion 14 and the rear side edge portion 15 in the width direction x are adhered to the exterior member 2, and non-adhesive regions 17 and 19 are provided between them. .. Specifically, in the front side edge portion 14, one side and the other side in the width direction x are adhered to the exterior member 2 to form a front side adhesive region 16 (16A, 16B), and the front side adhesive region 16 (16A, 16B) is adhered to the exterior member 2 between them. A front non-adhesive region 17 is formed, and one side and the other side of the width direction x are adhered to the exterior member 2 to form a posterior adhesive region 18 (18A, 18B). A posterior non-adhesive region 19 that is not adhered to the exterior member 2 is formed between them. By adhering the front side edge portion 14 to the exterior member 2 in the front side adhesive region 16 and adhering the rear side edge portion 15 to the exterior member 2 in the rear side adhesive region 18, the front side edge portion 14 and the rear side edge portion 14 and the rear side edge portion are adhered to each other. It is possible to prevent the portion 15 from rolling up. Then, by providing the front non-adhesive region 17 and the posterior non-adhesive region 19 between the front adhesive regions 16A and 16B and the posterior adhesive regions 18A and 18B, respectively, the front non-adhesive region 17 and the posterior non-adhesive region 17 and the posterior non-adhesive region 17 are provided. It is possible to suppress the formation of a large number of wrinkles at 19 and thereby improve the wearing feeling of the disposable diaper.

The front adhesive region 16 and the posterior adhesive region 18 are formed on a part or all of both end portions when the front side edge portion 14 and the rear side edge portion 15 are divided into three equal parts in the width direction x, and the front non-adhesive region is formed. It is preferable that the 17 and the posterior non-adhesive region 19 are formed in the entire central portion when the front side edge portion 14 and the rear side edge portion 15 are divided into three equal parts in the width direction x. That is, the front side edge portion 14 and the rear side edge portion 15 are adhered to the exterior member 2 at least at least a part of both end portions when divided into three equal parts in the width direction x, and are adhered to the exterior member 2 at other portions. It is preferable not to be done. The front adhesive region 16 is preferably provided with a length of 20% or more with respect to the width direction x when the length of the front side edge portion 14 in the width direction x is 100%, and 30% or more is more. It is preferable, 60% or less is preferable, and 50% or less is more preferable. The rear adhesive region 18 is preferably provided with a length of 20% or more with respect to the width direction x, preferably 30% or more, when the length of the rear side edge portion 15 in the width direction x is 100%. Is more preferable, 60% or less is preferable, and 50% or less is more preferable. By providing the front side adhesive region 16 and the rear side adhesive region 18 in this way, the front side edge portion 14 and the rear side edge portion 15 are less likely to be peeled off from the exterior member 2, and the front end portion and the rear end portion of the absorbent body 7 are not easily peeled off. Many wrinkles are less likely to be formed in the part. The length of the front adhesive region 16 and the posterior adhesive region 18 described above in the width direction x means the total length of one side and the other side of the width direction x.

The front adhesive region 16 preferably exists in a region within 10 mm from the front end of the absorbent body 7, more preferably in a region within 5 mm, and is provided including the front end of the absorbent body 7. Is even more preferable. Similarly, the rear adhesive region 18 preferably exists at least in a region within 10 mm from the rear end of the absorbent body 7, more preferably in a region within 5 mm, and more preferably on the rear side of the absorbent body 7. It is more preferred that it is provided including the edges. The front adhesive region 16 and the posterior adhesive region 18 are also preferably present in a region within 15 mm from both ends of the absorbent body 7 in the width direction x, more preferably within 10 mm, and more preferably within 8 mm. It is more preferable to be present in the region of. By providing the front side adhesive area 16 and the rear side adhesive area 18 in this way, the front side edge portion 14 and the rear side edge portion 15 of the absorbent main body 7 are less likely to roll up, and the wearing feeling of the disposable diaper is improved. Can be done.

It is preferable that the front side bonding region 16 is provided not only at the front side edge portion 14 but also extending rearward from the front side edge portion 14. It is preferable that the rear adhesive region 18 is provided not only at the posterior edge portion 15 but also extending forward from the rear edge portion 15. In this case, the front adhesive region 16 and / or the posterior adhesive region 18 is provided so as to extend to the portion where the absorbent core 10 of the absorbent main body 7 exists. From the viewpoint of stably fixing the absorbent main body 7 to the exterior member 2, the lengths of the front adhesive region 16 and the posterior adhesive region 18 in the front-rear direction y are preferably 40 mm or more, more preferably 70 mm or more, and more preferably 100 mm or more. Is even more preferable. Since the non-adhesive regions 20 and 21 are formed between the front adhesive region 16 and the posterior adhesive region 18 as described later, the length y of the non-adhesive regions 20 and 21 in the front-rear direction is secured. From the point of view, the lengths of the front adhesive region 16 and the posterior adhesive region 18 in the front-rear direction y are preferably 180 mm or less, more preferably 150 mm or less, still more preferably 120 mm or less.

In the disposable diaper 1, non-adhesive regions 20 and 21 are formed between the front adhesive region 16 and the posterior adhesive region 18. That is, in the absorbent body 7, a first intermediate non-adhesive region 20 that is not adhered to the exterior member 2 is formed between the front adhesive region 16A and the rear adhesive region 18A on one side in the width direction x, and the width direction x. On the other side of the above, a second intermediate non-adhesive region 21 that is not adhered to the exterior member 2 is formed between the front adhesive region 16B and the rear adhesive region 18B. By providing the first intermediate non-adhesive region 20 and the second intermediate non-adhesive region 21 in this way, even if the portion of the exterior member 2 along the edge of the leg opening 4 is distorted when the wearer moves the leg. , The distortion is less likely to be transmitted to the absorbent body 7, and it becomes easier to maintain the fit of the absorbent body 7 to the crotch of the wearer. The first intermediate non-adhesive region 20 and the second intermediate non-adhesive region 21 are preferably formed with a length of 200 mm or more in the front-rear direction y, more preferably 250 mm or more, still more preferably 300 mm or more.

The absorbent main body 7 may be adhered to the exterior member 2 at least in the front adhesive region 16 and the rear adhesive region 18, but the front non-adhesive region 17, the rear non-adhesive region 19, and the first intermediate non-adhesive region 20 If the second intermediate non-adhesive region 21 is formed, it may be adhered to the exterior member 2 at other portions. Specifically, the absorbent main body 7 may be bonded to the exterior member 2 between the first intermediate non-adhesive region 20 and the second intermediate non-adhesive region 21 to form the intermediate adhesive region 22. By providing the intermediate adhesive region 22, the absorbent main body 7 can be stably fixed to the exterior member 2. Further, by providing the intermediate adhesive region 22, it is possible to prevent the absorbent main body 7 from being lifted from the exterior member 2 and distorting the absorbent main body 7, and the fit of the absorbent main body 7 to the wearer's crotch. Can be enhanced.

The intermediate bonding region 22 is preferably provided at least in the crotch portion R of the exterior member 2, and may be provided so as to extend to the front side body portion P and / or the rear side body portion Q. The intermediate adhesive region 22 is preferably formed at a portion overlapping the absorbent core 10. The intermediate adhesive region 22 is formed at least at a position where the front adhesive region 16 and the posterior adhesive region 18 do not overlap with each other in the front-rear direction y, but the front adhesive region 16 and the posterior adhesive region 18 overlap with each other in the front-rear direction y. It is also preferable that it is also formed. By forming the intermediate adhesive region 22 in this way, it is possible to prevent the absorbent main body 7 from being lifted from the exterior member 2 in a part of the front-rear direction y and being greatly distorted.

It is preferable that the intermediate adhesive region 22 is not formed at a position where the front adhesive region 16 and the posterior adhesive region 18 overlap each other in the width direction x. By forming the intermediate adhesive region 22 in this way, the lengths of the first intermediate non-adhesive region 20 and the second intermediate non-adhesive region 21 in the width direction x are sufficiently secured, and the leg opening 4 of the exterior member 2 Even if the portion along the edge is distorted, the distortion can be difficult to be transmitted to the absorbent main body 7. The intermediate adhesive regions 22 have front adhesive regions 16A and 16B and posterior adhesive regions 18A and 18B whose lengths in the width direction x are formed on one side and the other side of the width direction x, respectively.
It is preferable that the intermediate adhesive region 22 is formed longer than the length x in the width direction of the above, and by forming the intermediate adhesive region 22 in this way, the absorbent main body 7 can be stably fixed to the exterior member 2. The length of the intermediate bonding region 22 in the width direction x is, for example, preferably 60 mm or more, more preferably 80 mm or more, further preferably 100 mm or more, further preferably 200 mm or less, more preferably 180 mm or less, still more preferably 160 mm or less.

The intermediate adhesive region 22 may be provided apart from the front adhesive region 16 and the posterior adhesive region 18, or may be provided in connection with each other. The front adhesive region 16 and the posterior adhesive region 18 are preferably provided apart from the intermediate adhesive region 22, so that even if distortion occurs in each adhesive region, it is difficult to transmit the strain to the adjacent adhesive region. Therefore, it is possible to easily maintain the adhesion of the absorbent main body 7 to the crotch portion of the wearer. From the point of stably fixing the absorbent main body 7 to the exterior member 2, the separation distance between the front adhesive region 16 and the intermediate adhesive region 22 and the separation distance between the rear adhesive region 18 and the intermediate adhesive region 22 are 30 mm, respectively. The following is preferable, 20 mm or less is more preferable, and 10 mm or less is further preferable. The separation distance includes the case where the separation distance is 0 mm.

The absorbent main body 7 is provided extending from the crotch portion R to the front side body portion P and the rear side body portion Q, the front side edge portion 14 is provided on the front side body portion P, and the rear side edge portion 15 is provided. It is preferably provided on the side body portion Q. In this case, the front non-adhesive region 17 is provided on the front body P, and the rear non-adhesive region 19 is provided on the rear body Q. When the disposable diaper 1 is worn, the front non-adhesive region 17 is provided so as to be located on the front body P where the force in the width direction x is likely to act on the front body P and the rear body Q. By providing the side non-adhesive region 19 so as to be located on the posterior body portion Q, even if a force acts on the front side edge portion 14 and the rear side edge portion 15 in the width direction x, the side non-adhesive region 17 and the front side non-adhesive region 17 By forming the posterior non-adhesive region 19, it is possible to suppress the formation of many wrinkles, and it is possible to improve the wearing feeling of the disposable diaper.

When the torso elastic member 24 is provided on the front torso P and / or the posterior torso Q, at least a part of the torso elastic member 24 is arranged so as to overlap the front adhesive region 16 or the posterior adhesive region 18. Is preferable. In this case, the body elastic member 24 exerts a contraction force in the width direction x on the front body P and the rear body Q, but even in such a case, the front non-adhesive region 17 and the rear non-adhesion are not adhered. The region 19 can prevent the formation of many wrinkles.

When the torso elastic member 24 is arranged so as to overlap the front adhesive region 16 or the posterior adhesive region 18, the torso elastic member 24 is intermittently arranged at the portion overlapping the front adhesive region 16 and / or the posterior adhesive region 18. It is preferable to be provided. By providing the body elastic member 24 in this way, wrinkles are less likely to be formed in the front side edge portion 14 and / or the rear side edge portion 15 (particularly, the front side adhesive region 16 and / or the rear side adhesive region 18). On the other hand, the body elastic member 24 is preferably provided continuously at a portion overlapping the front non-adhesive region 17 and / or the posterior non-adhesive region 19, and is wider than the front adhesive region 16 and the posterior adhesive region 18. It is preferable that it is continuously provided even outside the direction x, whereby the fit around the wearer's torso can be ensured.

It is also preferable that at least a part of the body elastic member 24 is arranged so as to overlap the absorbent core 10. If the body elastic member 24 is arranged so as to overlap the absorbent core 10, the front and rear ends of the absorbent core 10 are easily arranged near the wearer's skin due to the contraction force of the body elastic member 24, and the wearer It becomes easier to receive excrement from.

When the front leg elastic member 26F and the rear leg elastic member 26B are provided on the exterior member 2, the front leg elastic member 26F and the rear leg elastic member 26B are the front adhesive region 16 and the posterior adhesive region 18 It is preferable that they are arranged so as not to overlap with. In this case, the front leg elastic member 26F and the rear leg elastic member 26B are preferably arranged so as to overlap the first intermediate non-adhesive region 20 and the second intermediate non-adhesive region 21. By providing the front leg elastic member 26F and the rear leg elastic member 26B in this way, the contractile force of the front leg elastic member 26F and the rear leg elastic member 26B is less likely to be transmitted to the absorbent main body 7, and the exterior Even if the portion of the member 2 along the edge of the leg opening 4 is distorted, it becomes easy to maintain the fit of the absorbent body 7 to the wearer's crotch.

The front leg elastic member 26F and the rear leg elastic member 26B are preferably provided intermittently at a portion that crosses the crotch portion R in the width direction x. When the front leg elastic member 26F and the rear leg elastic member 26B are provided across the intermediate bonding region 22 in the width direction x, the front leg elastic member 26F and the rear leg portion overlap with the intermediate bonding region 22. It is preferable that the elastic member 26B is provided intermittently. In other parts, it is preferable that the front leg elastic member 26F and the rear leg elastic member 26B are continuously provided. If the front leg elastic member 26F and the rear leg elastic member 26B are provided in this way, the absorbent body 7 is less likely to be distorted, and the contraction force of the leg elastic member 26 extends to the vicinity of the intermediate adhesive region 22. As a result, the absorbent body 7 is lifted toward the wearer, and the fit of the absorbent body 7 in the crotch of the wearer is improved.

When the body elastic member 24 and the leg elastic member 26 are provided intermittently, for example, after the body elastic member 24 and the leg elastic member 26 are adhered and fixed to the exterior member 2, the body elastic member 24 and the leg portion are provided. The elastic member 26 may be cut with a cutter or the like. At this time, in the case of the body elastic member 24, it is preferable to cut at a plurality of locations (preferably three or more locations) in each of the front adhesive region 16 or the posterior adhesive region 18, and in the case of the leg elastic member 26, the crotch It is preferable to cut at a plurality of locations (preferably 5 or more locations) at a portion that crosses the portion R. By doing so, the body elastic member 24 and the leg elastic member 26 can be easily and intermittently provided in manufacturing, and the body elastic member 24 and the leg elastic member 26 are intermittently provided. At the portion, the contractile force of these elastic members can be substantially lost.

It is preferable that the absorbent main body 7 is provided with a crotch elastic member 23 that overlaps with the first intermediate non-adhesive region 20 or the second intermediate non-adhesive region 21 and extends in the front-rear direction y. Specifically, the crotch elastic member 23 is provided on one side of the absorbent body 7 in the width direction x so as to overlap the first intermediate non-adhesive region 20, and is provided on the other side of the absorbent body 7 in the width direction x. 2 It is preferable that the intermediate non-adhesive region 21 is provided so as to overlap with the intermediate non-adhesive region 21 (see FIGS. 3 to 5). The crotch elastic member 23 is preferably arranged between the absorbent core 10 and the back seat 9. By providing the crotch elastic member 23, both sides of the absorbent body 7 in the width direction x are lifted toward the wearer's skin, whereby the fit of the absorbent body 7 to the wearer's crotch is enhanced. It is possible to prevent lateral leakage of urine and the like. Further, when the disposable diaper 1 is used in combination with a separate absorbent article and the separate absorbent article is placed on the absorbent body 7 and used, the separate body is formed by the contraction force of the crotch elastic member 23. The effect of stably arranging the absorbent articles of the above on the absorbent main body 7 can also be expected. The crotch elastic member 23 is preferably provided so as not to overlap the front adhesive region 16 and the posterior adhesive region 18, whereby the absorbent main body 7 is less likely to be distorted in the front-rear direction y.

Each adhesive region for adhering the absorbent main body 7 and the exterior member 2 may be formed by applying an adhesive to the outer surface of the back sheet 9 and the skin side surface of the exterior member 2. As the adhesive, it is convenient in manufacturing to use a hot melt adhesive, and it is particularly preferable to use a rubber-based hot melt adhesive. If the front adhesive region 16, the posterior adhesive region 18, and the intermediate adhesive region 22 are formed of a rubber-based hot melt adhesive, even if a shear stress acts between the absorbent main body 7 and the exterior member 2, this can be removed. This relaxes and makes it difficult for the absorbent body 7 to peel off from the exterior member 2. The rubber-based hot-melt adhesive is not particularly limited as long as it is a hot-melt adhesive exhibiting rubber elasticity, but it preferably contains a styrene-based elastomer. Examples of styrene-based elastomers include styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SS), and styrene-ethylene-butadiene-.
Examples thereof include styrene block copolymer (SES) and styrene-ethylene-propylene-styrene block copolymer (SES). As the above-exemplified styrene-based elastomer, only one type may be used, or two or more types may be used in combination.

The adhesive may be applied to the entire surface of each adhesive region, or may be applied in a predetermined pattern such as a net shape, a linear shape, or a scattered spot shape. The front adhesive region 16 and the posterior adhesive region 18 preferably have a linear adhesive pattern, thereby ensuring breathability and flexibility in the front adhesive region 16 and the posterior adhesive region 18. It will be easier. When the absorbent body 7 is provided with the intermediate adhesive region 22, it is preferable that the intermediate adhesive region 22 also has a linear adhesive pattern.

The front adhesive region 16 and the posterior adhesive region 18 preferably have an adhesive pattern in which a plurality of rows of linear adhesives extending in the front-rear direction y are arranged in the width direction x. If the front adhesive region 16 and the posterior adhesive region 18 have such an adhesive pattern, it becomes easy to counter the force acting in the width direction x of the diaper while ensuring breathability, and the absorbent main body. 7 is less likely to peel off from the exterior member 2. Further, the force from the front body portion P and the rear side body portion Q in the width direction x is less likely to be transmitted to the absorbent main body 7, and the formation of wrinkles in the front side adhesive region 16 and the rear side adhesive region 18 can be suppressed.

The intermediate adhesive region 22 preferably has an adhesive pattern in which linear adhesives extending in the width direction x are arranged in a plurality of rows in the front-rear direction y. In the intermediate adhesive region 22, the absorbent main body 7 is applied to the crotch of the wearer and is greatly curved in the front-rear direction y of the diaper. In addition, it is preferable that the intermediate adhesive region 22 has an adhesive pattern in which a plurality of rows of linear adhesives extending in the width direction x are arranged in the front-rear direction y. As a result, the absorbent main body 7 is likely to be curved in the front-rear direction y along the wearer's crotch without applying an unreasonable load in the intermediate adhesive region 22, and the adhesive of the intermediate adhesive region 22 is easily maintained.

The linear adhesive pattern may be linear, curved, or a combination thereof. Examples of the curved adhesive pattern include a pattern in which the adhesive is applied in a serpentine shape or a spiral shape (spiral shape), and in this case, the extending direction of the adhesive is the extension of the repeating pattern of the curve. Determined based on the direction. The meandering shape includes, for example, a sinusoidal shape, an Ω-shaped repeating pattern, and the like. The linear adhesive pattern can be formed by applying an adhesive by a coater method, a bead method, an omega coating method, a spiral coating method, a pattern coating or the like.

The adhesive pattern of the front adhesive region 16 and the posterior adhesive region 18 is preferably one in which a plurality of rows of linear adhesives extending in a meandering shape and / or a spiral shape in the front-rear direction y are arranged in the width direction x. .. If the front adhesive region 16 and the posterior adhesive region 18 are formed in this way, it becomes easy to counter not only the force acting in the width direction x of the diaper but also the force acting in the front-rear direction y. , The front end portion and the rear end portion of the absorbent main body 7 are less likely to be peeled off from the exterior member 2. For example, when putting on and taking off a disposable diaper, it is possible to make it difficult for the absorbent main body 7 to be peeled off from the exterior member 2.

The adhesive pattern of the intermediate adhesive region 22 is preferably one in which a plurality of rows of adhesives extending substantially linearly in the width direction x are arranged in the front-rear direction y. That is, the intermediate bonding region 22 preferably has a striped bonding pattern extending in the width direction x. By forming the intermediate adhesive region 22 in this way, the absorbent main body 7 is likely to be curved in the front-rear direction y along the wearer's crotch, and the fit and wearing feeling of the absorbent main body 7 to the wearer's crotch. Can be enhanced.

The adhesive pattern in which a plurality of rows of linear adhesives are arranged has a line width of preferably 5 mm or less, more preferably 3 mm or less, and more preferably 2 mm, from the viewpoint of ensuring breathability and flexibility in the adhesive region. The following is more preferable. In disposable diapers, the front body portion P and the rear side body portion Q are more likely to receive forces from various directions than the crotch portion R, and followability and flexibility are required for them. From this point, when the front adhesive region 16, the rear adhesive region 18, and the intermediate adhesive region 22 have a linear adhesive pattern, the line width of the adhesive between the front adhesive region 16 and the rear adhesive region 18 is the intermediate adhesive region. It is preferably thinner than the line width of the adhesive of 22.

In an adhesive pattern in which a plurality of rows of substantially linear adhesives are arranged, the separation distance between adjacent substantially linear adhesives is preferably, for example, 2 mm or more, more preferably 3 mm or more, still more preferably 4 mm or more. Further, 20 mm or less is preferable, 15 mm or less is more preferable, and 10 mm or less is further preferable. By applying the adhesive in this way, it becomes easy to secure breathability and flexibility while ensuring the adhesive strength.

In the case of an adhesive pattern in which a plurality of rows of meandering or spirally extending linear adhesives are arranged, the swing width of the meandering or spiral adhesive pattern is preferably 2 mm or more, more preferably 3 mm or more, and 10 mm or less. Is preferable, and 8 mm or less is more preferable. Adjacent serpentine or spiral adhesives may be provided apart from each other or may be provided on top of each other. In the former case, the separation distance (shortest distance) of the adjacent meandering or spiral adhesives is preferably 15 mm or less, more preferably 10 mm or less, still more preferably 5 mm or less. By applying the adhesive in this way, it becomes easy to secure breathability and flexibility while ensuring the adhesive strength.

The amount of adhesive applied per unit area of the front adhesive region 16 and the rear adhesive region 18 is preferably smaller than the amount of adhesive applied per unit area of the intermediate adhesive region 22. In disposable diapers, the anterior body P and the rear body Q are more likely to receive forces from various directions than the crotch R, and followability and flexibility are required for them. By reducing the amount of adhesive applied per unit area of the adhesive region 18, it is possible to improve the followability to such a force and the flexibility in the front adhesive region 16 and the rear adhesive region 18. Further, in the disposable diaper, the anterior body P and the posterior body Q are more likely to get stuffy due to sweating than the crotch R. By providing the adhesive in this way, the intermediate adhesive area 22 It is also possible to improve the air permeability in the front adhesive region 16 and the posterior adhesive region 18.

The case where the disposable diaper of the present invention is applied to the pants-type diaper has been described above. However, the disposable diaper of the present invention is provided with fastening members on both sides in the width direction of the rear body portion, and the fastening members are used. It may be an open type (tape type) disposable diaper that is formed in the shape of pants when worn.

The material of each member constituting the disposable diaper of the present invention will be described. The top sheet is a sheet located on the wearer side when wearing a diaper, and is preferably liquid-permeable. Examples of the top sheet include non-woven fabrics formed from hydrophilic fibers such as cellulose, rayon, and cotton, and hydrophobicity such as polyolefins (for example, polypropylene and polyethylene), polyesters (for example, PET), and polyamides (for example, nylon). A non-woven fabric formed from fibers, in which the surface of the hydrophobic fibers is hydrophilized by a surfactant, or the like can be used. Further, as the top sheet, a woven cloth, a knitted cloth, a plastic film having holes formed or the like may be used.

The back seat is a seat located on the side opposite to the wearer, that is, on the outside when the diaper is worn, and is preferably liquid-impermeable. As the back sheet, a non-woven fabric formed of hydrophobic fibers such as polyolefin (for example, polypropylene, polyethylene), polyester (for example, PET), and polyamide (for example, nylon), a plastic film, and the like can be used. Further, a laminate of a non-woven fabric and a plastic film may be used. Liquid impermeable also includes the meaning of water repellency.

For the rising flap, a material that can be used for the back sheet can be used.

The exterior member may be liquid-permeable or liquid-impermeable, and a sheet material that can be used for the top sheet or back sheet can be used. The exterior member is preferably formed by laminating an outer sheet on an inner sheet, and more preferably formed by laminating a liquid-impermeable outer sheet on a hydrophilic inner sheet. In this case, a sheet material that can be used for the top sheet can be used as the inner sheet, and a sheet material that can be used for the back sheet can be used as the outer sheet.

When a non-woven fabric is used as each of the sheet materials described above, it is preferable to use a spunbonded non-woven fabric, an air-through non-woven fabric, a point-bonded non-woven fabric, a melt-blown non-woven fabric, an air-laid non-woven fabric, an SMS non-woven fabric, or the like.

The absorbent core is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. As the absorbent core, for example, a molded body obtained by molding an absorbent material into a predetermined shape can be used. The absorbent core may be covered with a sheet member such as a paper sheet (eg, tissue paper or tissue paper) or a liquid permeable non-woven fabric. Examples of the absorbent material contained in the absorbent core include hydrophilic fibers such as cellulose fibers (for example, crushed pulp fibers), polyacrylic acid type, polyaspartic acid type, cellulose type, starch / acrylonitrile type and the like. Examples include water-absorbent resin. Further, the absorbent material may include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and heat-sealing fibers such as polyamide fibers such as nylon. These heat-sealing fibers may be hydrophilized with a surfactant or the like in order to enhance the affinity with body fluids such as urine.

The absorbent material preferably contains hydrophilic fibers from the viewpoint of increasing the absorption rate of urine and the like. Further, from the viewpoint of increasing the absorption capacity, the absorbent material preferably contains a water-absorbent resin. Therefore, the absorbent core preferably contains hydrophilic fibers (particularly pulp fibers) and a water-absorbent resin. In this case, for example, it is preferable to use an aggregate of hydrophilic fibers mixed or sprayed with a water-absorbent resin.

The absorbent core may be a sheet-like absorber. If the absorbent core is a sheet-shaped absorber, when a separate absorbent article is used in combination, even if the separate absorbent article is placed on the absorbent body and used, the wearer's crotch Bulkiness can be suppressed.

Examples of the sheet-shaped absorber include those formed so as to have a water-absorbent resin between the non-woven fabrics and not to have pulp fibers. Since the sheet-shaped absorber thus formed has a water-absorbent resin between the non-woven fabrics, a high absorption capacity can be realized. Further, since the sheet-shaped absorber does not have pulp fibers between the non-woven fabrics, it can be formed thin without being bulky.

As the sheet-shaped absorber, water-absorbent fibers may be used as the absorbent material. Also in this case, the sheet-like absorber is formed thin without being bulky. Examples of the water-absorbent fiber include fibers containing a protonated or salt-formed carboxyl group. For example, a water-absorbent fiber can be obtained by hydrolyzing an acrylic fiber to convert a nitrile group contained in the acrylic fiber into a carboxyl group. At this time, it is preferable that the carboxyl group contained in the water-absorbent fiber forms an alkali metal salt or an ammonia salt. Further, the water-absorbent fiber can be produced by immersing the hydrophilic fiber in acrylic acid and precipitating acrylic acid on the fiber surface.

1: Disposable diaper 2: Exterior member 3: Waist opening 4: Leg opening 7: Absorbent body 8: Top sheet 9: Back sheet 10: Absorbent core 14: Front side edge 15: Rear side edge 16 , 16A, 16B: Front adhesive area 17: Front non-adhesive area 18, 18A, 18B: Posterior adhesive area 19: Posterior non-adhesive area 20: First intermediate non-adhesive area 21: Second intermediate non-adhesive area 22: Intermediate Adhesion area 23: Crotch elastic member 24: Body elastic member 26: Leg elastic member, 26F: Front leg elastic member, 26B: Rear leg elastic member P: Front body Q: Rear body R: Crotch

Claims (8)

An exterior member having a front torso, a posterior torso, and a crotch located between them,
A disposable diaper provided at the crotch part of the exterior member and having a top sheet, a back sheet, and an absorbent body having an absorbent core arranged between them.
The absorbent body is arranged so as to overlap the exterior member as a whole.
The absorbent body has anterior margin and a posterior margin at the front and rear ends, respectively, in which the absorbent core does not exist.
In the front edge portion, one side and the other side in the width direction are adhesively fixed to the exterior member to form a front adhesive region, and a front non-adhesive region not adhered to the exterior member is formed between them.
In the rear edge portion, one side and the other side in the width direction are adhesively fixed to the exterior member to form a rear adhesive region, and a rear non-adhesive region not adhered to the exterior member is formed between them.
In the absorbent body, a first intermediate non-adhesive region that is not adhered to the exterior member is formed between the front adhesive region and the rear adhesive region on one side in the width direction, and the other side in the width direction. A disposable diaper characterized in that a second intermediate non-adhesive region that is not adhered to the exterior member is formed between the front adhesive region and the rear adhesive region. The anterior torso and / or the posterior torso is provided with a torso elastic member extending in the width direction.
The body elastic member is intermittently provided at a portion overlapping the front adhesive region and / or the posterior adhesive region, and is continuously provided at a portion overlapping the front non-adhesive region and / or the posterior non-adhesive region. provided, disposable diaper of claim 1 is continuously provided, et al are at the outside in the width direction than said front adhesive region and the rear adhesive region. The disposable body according to claim 1 or 2, wherein the absorbent body is adhesively fixed to the exterior member between the first intermediate non-adhesive region and the second intermediate non-adhesive region to form an intermediate adhesive region. Diapers. The disposable diaper according to claim 3, wherein the front adhesive region and the posterior adhesive region are provided apart from the intermediate adhesive region. The front adhesive region and the posterior adhesive region have an adhesive pattern in which a plurality of rows of linear adhesives extending in the front-rear direction are arranged in the width direction.
The disposable diaper according to claim 3 or 4, wherein the intermediate adhesive region has an adhesive pattern in which linear adhesives extending in the width direction are arranged in a plurality of rows in the front-rear direction. The intermediate bonding region is formed at a position where the front bonding region and the rear bonding region do not overlap in the front-rear direction, and is also formed at a position where the front bonding region and the rear bonding region overlap in the front-rear direction. The disposable diaper according to any one of claims 3 to 5. According to any one of claims 1 to 6, the absorbent body is provided with a crotch elastic member extending in the front-rear direction so as to overlap the first intermediate non-adhesive region or the second intermediate non-adhesive region. The listed disposable diapers. The exterior member is formed in a pants shape having a waist opening and a pair of leg openings.
The exterior member includes a front leg elastic member that extends along the anterior edge of the leg opening and extends across the absorbent body in the width direction, and extends along the posterior edge of the leg opening. , A posterior leg elastic member extending across the absorbent body in the width direction is provided.
The disposable diaper according to any one of claims 1 to 7, wherein the front leg elastic member and the rear leg elastic member are arranged so as not to overlap the front adhesive region and the posterior adhesive region. ..

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