JP2021083682A - Disposable diaper - Google Patents

Abstract

To provide a disposable diaper which can efficiently shift a skin care agent to a skin of a wearer.SOLUTION: A disposable diaper comprises an absorber and a surface sheet, and is divided into a crotch area arranged on a crotch part, an abdominal area provided on an abdominal side of the crotch area, and a back side area provided on a back side of the crotch area. The absorber comprises a plurality of first deformation guide parts which extends in a vertical direction on the crotch area, and is arranged in a lateral direction at an interval. The surface sheet comprises a skin care agent inclusion area which is provided on a center part in the lateral direction of the crotch area and includes a skin care agent. The skin care agent inclusion area is arranged to traverse the plurality of first deformation guide parts in the lateral direction, in plan view seen from the thickness direction of the disposable diaper.SELECTED DRAWING: Figure 1

Description

The present invention relates to disposable diapers.

Conventionally, various diapers coated with skin care agents have been proposed.
For example, Patent Document 1 describes a disposable diaper in which a hydrophobic lotion is arranged on the surface of a top sheet. Further, Patent Documents 2 and 3 describe disposable diapers in which a hydrophilic lotion is arranged on the surface of a top sheet.

Japanese Patent Application Laid-Open No. 2008-522772 Special Table 2010-525862 Japanese Unexamined Patent Publication No. 2010-75733

The surface sheet (top sheet) of absorbent articles such as disposable diapers is easily deformed by external force such as the wearer's legs when worn. In the absorbent articles described in Patent Documents 1 to 3, the efficiency of transfer of the skin care agent to the skin due to such deformation of the surface sheet has not been sufficiently considered.

An object of the present invention is to provide a disposable diaper capable of efficiently transferring a skin care agent to the wearer's skin.

The disposable diaper according to one embodiment of the present invention includes an absorber and a liquid-permeable surface sheet arranged on the skin side of the absorber, and extends vertically from the ventral side of the wearer through the crotch portion to the dorsal side. An inseam region having a direction and a lateral direction orthogonal to the vertical direction and arranged in the crotch portion, a ventral region located on the ventral side of the inseam region, and a dorsal side of the inseam region. It is divided into the dorsal area located in.
The absorber has a plurality of first deformation guiding portions extending in the vertical direction and arranged at intervals in the horizontal direction in the inseam region.
The surface sheet is located in the lateral central portion of the inseam region and has a skin care agent-containing region containing a skin care agent.
The skin care agent-containing region is arranged so as to cross the plurality of first deformation guiding portions in the lateral direction in a plan view seen from the thickness direction of the disposable diaper.

As described above, according to the disposable diaper of the present invention, it is possible to efficiently transfer the skin care agent to the wearer's skin.

It is a top view (developed view) which shows the disposable diaper which concerns on one Embodiment of this invention. It is sectional drawing which cut at the line II-II of FIG. It is a back view which looked at the absorbent core of the absorber of FIG. 1 from the non-skin side. In the figure, the skin care agent-containing region of the surface sheet is schematically shown by hatching with diagonal lines. The cross-sectional view of FIG. 2 is schematically shown. FIG. 2A shows a mode in which the disposable diaper is stretched on an XY plane, and FIG. 2B shows a mode in which the disposable diaper is contracted by each elastic member described later. The embodiment is shown, and (C) shows an example of the embodiment in which the disposable diaper is deformed as a result of receiving a force (white arrow) from the lateral direction Y. FIG. 3 is an enlarged view showing an absorbent core in the inseam region of FIG. It is a top view which shows the main part of the surface sheet of FIG. 1 enlarged and schematically. It is a back view seen from the non-skin surface side which shows the other structural example of the absorbent core of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Overall composition of diapers]
The disposable diaper 1 of the present invention includes the absorber 4 and the surface sheet 2, and has a function of absorbing liquid excrement (also simply referred to as “liquid”) such as urine and watery feces of the wearer. The disposable diaper 1 is hereinafter referred to as a diaper 1.
As shown in the developed view of FIG. 1, the diaper 1 has a vertical direction X extending from the ventral side of the wearer to the dorsal side through the crotch portion and a horizontal direction corresponding to the left and right direction of the wearer and orthogonal to the vertical direction X. Has Y and. Further, the diaper 1 has a thickness direction Z orthogonal to both the vertical direction X and the horizontal direction Y. In the present specification, with respect to the thickness direction Z, the side closer to the wearer's skin may be referred to as the upper or skin side, and the side closer to the clothing may be referred to as the lower or non-skin side.
Note that FIG. 1 shows a mode in which the diaper 1 is stretched on the XY plane against the contraction force of each elastic member of the diaper 1 described later.

As shown in FIG. 1, the diaper 1 has an inseam region C arranged in the crotch portion of the wearer when worn, a ventral region A located ventral to the inseam region C, and a dorsal side to the inseam region C. It is divided into a dorsal region B located in. The ventral region A, the inseam region C, and the dorsal region B correspond to each region when the diaper 1 is divided into three equal parts in the vertical direction X. The term "when worn" as used herein means a state in which a normally assumed proper wearing position is maintained.

The diaper 1 has a planar shape confined inward in the horizontal direction Y in the central portion of the vertical direction X. That is, the inseam region C is configured to be narrower in the lateral direction Y with respect to the ventral region A and the dorsal region B.
A fastening tape F is provided on the side edge portion B1 in the lateral direction Y of the dorsal region B. A landing tape (not shown) for adhering the fastening tape F is provided on the non-skin side surface of the ventral region A. The dorsal region B and the ventral region A are adhered to each other by the fastening tape F at the time of wearing, and are integrally arranged around the waist and waist of the wearer.

As shown in FIG. 2, the diaper 1 includes an absorber 4, a front surface sheet 2, a back surface sheet 3, and a pair of three-dimensional gather forming sheets 5. The diaper 1 has a basic configuration in which the back surface sheet 3, the absorber 4, and the front surface sheet 2 are laminated in the thickness direction Z. These configurations are bonded to each other by a known bonding means such as a hot melt adhesive.

The absorber 4 extends along the longitudinal direction X and is arranged between the front surface sheet 2 and the back surface sheet 3. The absorber 4 absorbs the liquid from the surface on the surface sheet 2 side and diffuses it inside to hold the liquid.
The absorber 4 has an absorbent core 7 and a core wrap sheet 8.
The absorbent core 7 includes an upper surface 7a of the core located on the skin side and a lower surface 7b of the core located on the non-skin side, and is mainly composed of an absorbent material capable of holding a liquid. Specifically, the absorbent core 7 has a structure of hydrophilic fiber stacks, a structure in which an absorbent polymer is supported on the stacks, a structure composed of only a water-absorbent polymer, and the like.
The core wrap sheet 8 has a function of covering the absorbent core 7 and maintaining the shape of the absorbent core 7, for example. The core wrap sheet 8 is formed of, for example, tissue paper-like thin and soft paper, a liquid-permeable non-woven fabric, or the like.

The surface sheet 2 is arranged on the skin side of the absorber 4 (upper in the thickness direction Z), and constitutes, for example, the lateral Y central portion side of the skin side surface of the diaper 1. The surface sheet 2 is configured as a liquid-permeable sheet material, and is formed of a woven fabric made of synthetic fibers or natural fibers, a non-woven fabric, a porous sheet, or the like. As will be described later, the surface sheet 2 may have a plurality of convex portions 17 projecting upward in the thickness direction Z.

The back sheet 3 is arranged on the non-skin side of the absorber 4 (below Z in the thickness direction), and constitutes, for example, almost the entire non-skin side surface of the diaper 1. The back surface sheet 3 is preferably leak-proof, and is formed of, for example, a sheet material having functions such as poor liquid permeability, water vapor permeability, and water repellency. As the sheet material, for example, a porous film or the like obtained by stretching a film made of a synthetic resin such as polyethylene in which fine powder composed of a filler such as calcium carbonate is dispersed and having fine pores can be used.

The pair of three-dimensional gather forming sheets 5 are arranged on the lateral Y side portion of the surface sheet 2, and form, for example, the lateral Y side portion of the skin side surface of the diaper 1. The three-dimensional gather forming sheet 5 is formed of a sheet material having functions such as poor liquid permeability, water vapor permeability, and water repellency, which can be used as the back surface sheet 3. In the pair of three-dimensional gather forming sheets 5, the central portion side in the lateral direction Y is arranged so as to overlap the front surface sheet 2, and the lateral Y side portion extends to the outside of the front surface sheet 2 and is joined to the back surface sheet 3. The side end portion 5a on the lateral Y central portion side of the three-dimensional gather forming sheet 5 is a free end portion that is not joined to the surface sheet 2 or the like, and constitutes a three-dimensional gather.

As shown in FIGS. 1 and 2, a first elastic member 9 that expands and contracts in the vertical direction X is arranged at the side end portion 5a of the three-dimensional gather forming sheet 5. The first elastic member 9 is attached to the three-dimensional gather forming sheet 5 stretched in the XY plane in a stretched state in the vertical direction X. As a result, when worn, the first elastic member 9 contracts in the vertical direction X, the side end portion 5a is separated from the surface sheet 2 in the thickness direction Z, and a three-dimensional gather that stands up in the thickness direction Z is realized. As shown in FIG. 1, a three-dimensional gather fixing portion 6 in which expansion and contraction of the first elastic member 9 is inhibited is formed on the end side of the first elastic member 9 in the vertical direction X. In the three-dimensional gather fixing portion 6, the side end portion 5a is fixed to, for example, the surface sheet 2, so that the standing of the three-dimensional gather is suppressed.

As shown in FIGS. 1 and 2, for example, a second elastic member 10 that expands and contracts in the vertical direction X is arranged in the vicinity of the side end portion 5b outside the lateral direction Y of the three-dimensional gather forming sheet 5 to be worn. Leg gathers are sometimes constructed to fit around the wearer's legs. The second elastic member 10 is a thread-like or band-shaped elastic member that can be expanded and contracted in the vertical direction X. As shown in FIG. 2, the second elastic member 10 is sandwiched between, for example, the three-dimensional gather forming sheet 5 and the back surface sheet 3 in a state of being extended in the vertical direction X.

[Structure of the first deformation induction part of the absorber]
As shown in FIGS. 1 and 3, the absorber 4 has a plurality of first deformation guiding portions 11 extending in the vertical direction X in the inseam region C, respectively. The plurality of first deformation guiding portions 11 can induce deformation such that the region between the adjacent first deformation guiding portions 11 is raised convexly toward the skin.
In the first deformation guiding portion 11, "extending in the vertical direction X" may extend in the vertical direction X as a whole, and includes a mode in which at least a part thereof is slightly curved or meandering.
In the following description, the region of the absorber 4 surrounded by the first deformation guiding portion 11 and each deformation guiding portion described later is referred to as a block portion 12.

The plurality of first deformation guiding portions 11 are arranged at intervals in the lateral direction Y. In the example shown in FIGS. 1 and 3, four first deformation guiding portions 11 are arranged at equal intervals. The first deformation guiding portion 11 may be able to induce the deformation of the absorber 4 in the inseam region C, and may extend to at least a part of the inseam region C of the absorber 4. In the examples shown in FIGS. 1 and 3, the first deformation guiding portion 11 extends over the entire inseam region C and extends to a part of the ventral region A and the dorsal region B.

The first deformation guiding portion 11 includes, for example, a groove or a slit that opens on the non-skin side of the absorber 4. In the example shown in FIG. 2, the first deformation guiding portion 11 includes a groove having a low basis weight formed upward from the core lower surface 7b located on the non-skin side of the absorbent core 7. The “low basis weight groove” means that the basis weight is lower than that of the surrounding block portion 12.
The "low basis weight" in the first deformation inducing portion 11 and each of the deformation inducing portions to be described later is a concept including a form in which the material of the absorbent core 7 is present and a form in which the material of the absorbent core 7 is not present. .. In the form in which the material of the absorbent core 7 is present in the first deformation guiding portion 11, the blocking portions 12 of the absorbing core 7 located on both sides of the first deformation guiding portion 11 are connected to each other, so that the absorbing core 7 is absorbent. It is more preferable because flexibility can be imparted while suppressing deformation and destruction of the core 7.

[Structure of skin care agent-containing area]
As shown in FIGS. 1, 2 and 3, the surface sheet 2 is located in the lateral Y central portion of the inseam region C and has a skin care agent-containing region 13 containing a skin care agent. "The central portion of the inseam region C in the lateral direction Y" means the central region when the inseam region C is divided into three equal parts in the lateral direction Y with reference to the region narrowest in the lateral direction Y.
Although the surface sheet 2 is not shown in FIG. 3, the positional relationship between the absorbent core 7 and the skin care agent-containing region 13 is schematically shown. In FIGS. 1 and 3 and FIG. 7 described later, the skin care agent-containing region 13 is shown by hatching with diagonal lines.

The skin care agent-containing region 13 is preferably a region in which the skin care agent is applied on the surface sheet 2. The skin care agent-containing region 13 is not limited to this, and may be any region in the surface sheet 2 containing the skin care agent.
In the skin care agent-containing region 13, it is preferable that the skin care agent is applied to the entire region, but the skin care agent may be applied in dots or lines. When the skin care agent is applied in a punctate or linear manner, the skin care agent-containing region 13 is configured as an aggregate of small punctate or linear regions. The method of applying the skin care agent is not limited, and one or more methods selected from the die coater method, the slot spray method, the curtain spray method, the melt blown method, the spiral spray method, the gravure method and the bead method can be appropriately selected.

The skin care agent-containing region 13 is arranged so as to cross the plurality of first deformation guiding portions 11 in a plan view of the diaper 1 when viewed from the thickness direction Z. In the present specification, the "planar view seen from the thickness direction Z of the diaper 1" is also simply referred to as "planar view". "The skin care agent-containing region 13 is arranged so as to cross the first deformation inducing portion 11" means that the skin care agent-containing region 13 is from the block portion 12 located on the right side of the first deformation inducing portion 11 in a plan view. It means that it extends continuously in the lateral direction Y through the first deformation guiding portion 11 to the block portion 12 located on the left side of the first deformation guiding portion 11. When the skin care agent-containing region 13 is configured as an aggregate of point-like or linear small regions, "continuously extending" means that the region defined as an aggregate of small regions continuously extends. Means that.
In the examples shown in FIGS. 1 and 3, the skin care agent-containing region 13 is arranged so as to cross the two first deformation induction portions 11. In this example, the skin care agent-containing region 13 extends over the entire length X in the longitudinal direction of the absorbent core 7, but is not limited to this, and may be arranged in at least a part of the inseam region C.

The operation and effect of the present invention will be described with reference to FIG. 4, which is a schematic cross-sectional view of the diaper 1.
FIG. 4A is a diagram corresponding to FIG. 2, showing a mode in which the diaper 1 is stretched in the XY plane. In a state where no external force is applied to the diaper 1, as shown in FIG. 4B, the diaper 1 is deformed with the first deformation guiding portion 11 as the starting point of deformation. This is because the first elastic member 9 and / or the second elastic member 10 deforms the diaper 1 so as to contract in the vertical direction X, and each member of the diaper 1 moves inward in the lateral direction Y as well. As a result, the region (block portion 12) between the adjacent first deformation guiding portions 11 receives a force in the lateral direction Y, and the block portion 12 is deformed in a bellows shape so as to bulge toward the skin side. Along with the deformation of the absorber 4, the skin care agent-containing region 13 of the surface sheet 2 is also deformed so as to bulge toward the skin side. Therefore, according to the diaper 1, even in a natural state, the skin care agent easily migrates from the skin care agent-containing region 13 to the skin in the crotch portion of the wearer. When the first elastic member 9 and the second elastic member do not exist, the diaper 1 has almost no contraction in the vertical direction X, so that the state is close to that shown in FIG. 4 (A).

Further, as shown in FIG. 4C, when the inseam region C receives an external force inward in the lateral direction Y due to the wearer's legs or the like (see the white arrow), first, the outermost first deformation induction A non-blocking region (hereinafter, referred to as an outer frame region R) further outside the portion 11 directly receives the force, and the outer frame region R moves inward in the lateral direction Y. At this time, the first deformation guiding portion 11 located on the outermost side in the lateral direction Y is deformed, and the external force directly received by the outer frame region R is buffered. As a result, the force is less likely to be propagated to the block portion 12 (hereinafter, also referred to as the outer block portion 12b) adjacent to the outer frame region R via the first deformation guiding portion 11. On the other hand, the outer block portion 12b is sandwiched between the outer frame region R and the inner block portion 12a, which will be described later, via the first deformation guiding portion 11. Therefore, the direction of the force received by the outer frame region R and the direction of the force received by the outer block portion 12b are likely to be deviated, and the outer block portion 12b is likely to be displaced in the thickness direction Z with respect to the outer frame region R. .. That is, the outer block portion 12b is compressed in the lateral direction Y and easily deformed so as to be displaced in the thickness direction Z with respect to the outer frame region R.
Similarly, the first deformation guiding portion 11 located inside the outer block portion 12b is also deformed to buffer the force received by the outer block portion 12b. As a result, the force is less likely to be propagated to the inner block portion 12 (hereinafter, also referred to as the inner block portion 12a) adjacent to the outer block portion 12b via the first deformation guiding portion 11. On the other hand, the inner block portion 12a is also sandwiched between the two outer block portions 12b via the first deformation guiding portion 11. Therefore, the direction of the force received by the outer block portion 12b and the direction of the force received by the inner block portion 12a are likely to be deviated, and the inner block portion 12a is likely to be displaced in the thickness direction Z with respect to the outer block portion 12b. .. That is, the inner block portion 12a is compressed in the lateral direction Y, and is easily deformed so as to be displaced in the thickness direction Z with respect to the outer block portion 12b.
Here, the positional relationship between the outer block portion 12b and the inner block portion 12a in the thickness direction Z can be determined by the body shapes of the opposite wearers of the outer block portion 12b and the inner block portion 12a.
For example, when the inner block portion 12a faces the urination portion of a girl, the urination portion has a concave structure and the periphery thereof has a convex structure. Therefore, as shown in FIG. 4C, as a result of the outer block portion 12b being pushed relatively downward in the thickness direction Z, the inner block portion 12a tends to protrude upward in the thickness direction Z. Similarly, when the inner block portion 12a faces the defecation portion, the defecation portion has a concave structure due to intergluteal cleft, and the periphery thereof has a convex structure due to the buttocks. Therefore, as shown in FIG. 4C, the inner block portion 12a is likely to be displaced upward and the outer block portion 12b is likely to be displaced downward. As a result, the skin care agent-containing region 13 is more likely to come into contact with the wearer's excretory portion and its surroundings, and the skin care agent is more likely to migrate to the excretory portion and its surrounding skin.
Alternatively, when the inner block portion 12a faces the urination portion of the boy, the inner block portion 12a is pushed downward by the penis in the thickness direction Z. As a result, the inner block portion 12a is likely to be displaced downward in the thickness direction Z, and the outer block portion 12b is likely to be displaced upward in the thickness direction Z.
In either case, with the deformation of the inner block portion 12a and the outer block portion 12b, the skin care agent-containing region 13 is likely to be deformed so as to fit the excretion portion and its surroundings.
Further, since each block portion 12 is compressed in the lateral direction Y, each block portion 12 is deformed so as to bulge in a convex shape in each block portion 12. As a result, the skin care agent-containing region 13 is deformed so as to be in close contact with the skin, and the skin care agent is easily transferred from the skin care agent-containing region 13 to the skin in the crotch portion of the wearer.

In order to facilitate such an effect, it is preferable that the number of the first deformation guiding portions 11 is four or more. Further, when the first deformation guiding portion 11 does not exist on the center line along the vertical direction X (the line that bisects the absorber 4 in the inseam region C in the horizontal direction Y), the block portion existing on the innermost side. Since the 12 comes into contact with the excretory portion on the surface, the contact area between the skin care agent and the skin tends to be large. On the other hand, when the first deformation guiding portion 11 is present on the center line along the vertical direction X, the deformation guiding based on the center line is easily performed, so that the skin care agent is transferred to the intergluteal cleft and its surroundings. It is preferable from the viewpoint, and it is preferable for girls (women).

In addition, by arranging the skin care agent-containing region 13 so as to cross the plurality of first deformation guiding portions 11, in a plan view, the region (block portion 12) between the adjacent first deformation guiding portions 11 is laterally oriented. The skin care agent-containing region 13 is arranged over the entire width of Y. As a result, the skin care agent-containing region 13 can more reliably and widely contact the wearer's skin, and the transfer of the skin care agent to the skin can be promoted.
Therefore, according to the diaper 1, the skin care agent can be efficiently transferred to the skin of the crotch portion of the wearer, and the skin care effect in the crotch portion where the skin is easily damaged by excretion can be enhanced.

Further, when the first deformation guiding portion 11 has a groove or a slit that opens to the non-skin side, the first deformation guiding portion 11 has a lower rigidity than the block portion 12. Therefore, when an external force is applied in the lateral direction Y, the first deformation guiding portion 11 is compressed and easily deformed so as to be recessed toward the open non-skin side. On the other hand, the adjacent block portions 12 receive a force in the lateral direction Y from each other through the groove or the slit in the first deformation guiding portion 11. As a result, the block portion 12 is likely to swell toward the skin side, and a convex shape protruding toward the skin side is likely to be stably formed. Therefore, with this configuration, the skin care effect of the skin care agent can be more reliably exhibited.

Further, the absorber 4 is provided with the groove-shaped first deformation guiding portion 11 on the absorbent core 7, and the core wrap sheet 8 covering the absorbent core 7 and the absorbent core 7 are not joined to the entire surface. preferable. In this way, since the core wrap sheet 8 exhibits a constant resistance to deformation inward in the lateral direction Y, excessive deformation can be suppressed as the absorber 4. For this reason, deformation that causes contact between the skin care agent and the skin is likely to occur, and since the core wrap sheet 8 does not excessively follow the deformation of the absorbent core 7, appropriate deformation of the absorbent core 7 is likely to occur. Therefore, the effect of the present invention can be more easily obtained.
The bonding between the absorbent core 7 and the core wrap sheet 8 is preferably 50% or less, more preferably 30% or less, based on the projected area of the absorbent core 7 on the skin side and the non-skin side, respectively. The core wrap sheet 8 and the absorbent core 7 do not have to be joined.

[Structure of the second deformation induction part of the absorber]
As shown in FIGS. 1 and 3, the absorber 4 is located in the ventral region A or the dorsal region B, and has a plurality of second deformation guiding portions 14 extending in the lateral direction Y, respectively. The plurality of second deformation guiding portions 14 can induce deformation such that the region (block portion 12) between the adjacent second deformation guiding portions 14 is raised convexly in the thickness direction Z.
The term "extending in the lateral direction Y" in the second deformation guiding portion 14 means that it may extend in the lateral direction Y as a whole, and includes a mode in which at least a part thereof is slightly curved or meandering.
For example, the second deformation guiding portion 14 includes a groove or a slit that opens to the non-skin side of the absorber 4. As an example, the second deformation inducing portion 14 includes a low basis weight groove formed upward from the core lower surface 7b located on the non-skin side of the absorbent core 7. As a result, the second deformation guiding portion 14 has low rigidity and is easily deformed so as to be recessed toward the non-skin side, and deformation such as raising the block portion 12 in a convex shape is easily induced.

The plurality of second deformation guiding portions 14 are arranged at intervals in the vertical direction X. In the examples shown in FIGS. 1 and 3, a plurality of second deformation guiding portions 14 are arranged in the ventral region A and a plurality of the second deformation guiding portions 14 at substantially equal intervals. The second deformation guiding portion 14 is preferably arranged so as to intersect at least one of the plurality of first deformation guiding portions 11 extending to the ventral region A and the dorsal region B.

The ventral region A and the dorsal region B are arranged around the wearer's waist and waist when worn, but these regions are arranged in the vertical direction X inward (the crotch side of the wearer) due to the movement of the wearer or the like. ) May receive a force in the direction of slipping. In this case, the second deformation guiding portion 14 located in the ventral region A or the dorsal region B serves as the starting point of deformation, and the region (block portion 12) between the second deformation guiding portions 14 adjacent to each other in the vertical direction X is formed. It can be deformed so as to bulge convexly in the thickness direction Z. The deformation of the ventral region A or the dorsal region B consumes the energy of the force in the slipping direction, and prevents the influence of the force from extending to the inseam region C. Therefore, it becomes easy to maintain a state in which the inseam region C fits well to the crotch portion of the wearer, and as a result, it becomes easy to maintain a state in which the skin care agent is easily transferred.

[Structure of the third deformation induction part of the absorber]
As shown in FIGS. 1 and 3, the absorber 4 is located in the ventral region A or the dorsal region B, is separated from any of the plurality of first deformation guiding portions 11, and is separated from the plurality of first deformation guiding portions 11. It has a third deformation guiding portion 15 extending in the vertical direction X outside the lateral direction Y of the portion 11. Similar to the first deformation guiding portion 11, the third deformation guiding portion 15 can induce deformation such that the region (block portion 12) around the third deformation guiding portion 15 is raised convexly in the thickness direction Z.
"The third deformation guiding portion 15 extends laterally Y outward of the plurality of first deformation guiding portions 11" means that the plurality of first deformation guiding portions 11 extend to the ventral region A or the dorsal region B. Means that the third deformation guiding portion 15 is arranged outside the lateral Y of these first deformation guiding portions 11. When the plurality of first deformation guiding portions 11 do not extend to the ventral region A or the dorsal region B, the third deformation guiding portion 15 extends these first deformation guiding portions 11 to the ventral region A or the dorsal region. It means that it is arranged on the lateral Y outside of the virtual area extended to B.
In the third deformation guiding portion 15, "extending in the vertical direction X" may mean extending in the vertical direction X as a whole, and includes a mode in which at least a part thereof is slightly curved or meandering.

The third deformation guiding portion 15 may be located in at least one of the ventral region A and the dorsal region B. For example, the third deformation guiding portion 15 may extend from the ventral region A to the inseam region C, or may extend from the dorsal region B to the inseam region C. In the examples shown in FIGS. 1 and 3, two third deformation guiding portions 15 are arranged in the ventral region A (a pair of left and right) and two in the dorsal region B (a pair of left and right).

For example, the third deformation guiding portion 15 includes a groove or a slit that opens on the non-skin side of the absorber 4. As an example, the third deformation inducing portion 15 includes a low basis weight groove formed upward from the core lower surface 7b located on the non-skin side of the absorbent core 7. As a result, the third deformation guiding portion 15 has low rigidity and is easily deformed so as to be recessed toward the non-skin side, and deformation such as raising the block portion 12 in a convex shape is easily induced.

The ventral region A and the dorsal region B arranged around the waist and waist of the wearer are easily affected by the movement of the wearer, and an external force is easily applied. By locating the third deformation guiding portion 15 in the ventral region A or the dorsal region B, the third deformation guiding portion 15 serves as a starting point of deformation with respect to an external force from the lateral direction Y, and is around the third deformation guiding portion 15. The region (block portion 12) can be deformed. As a result, the energy of the external force is relaxed, and the influence of the external force on the inseam region C can be suppressed. Further, since the third deformation guiding portion 15 is separated from the first deformation guiding portion 11, it is possible to prevent the deformation of the block portion 12 around the third deformation guiding portion 15 from extending to the inseam region C. Therefore, even with this configuration, the fit of the inseam region C to the crotch portion is well maintained, and the state in which the skin care agent is easily transferred to the crotch portion of the wearer is easily maintained.

[Detailed composition of the absorber in the inseam area]
As shown in FIGS. 1 and 3, the absorber 4 further has a plurality of fourth deformation guiding portions 16 intersecting the plurality of first deformation guiding portions 11 in the inseam region C and extending in the lateral direction Y, respectively. Similar to the first deformation guiding portion 11, the fourth deformation guiding portion 16 induces deformation such that the region (block portion 12) between the adjacent fourth deformation guiding portions 16 is raised convexly in the thickness direction Z. obtain.
In the fourth deformation guiding portion 16, "extending in the lateral direction Y" may extend in the lateral direction Y as a whole, and includes a mode in which at least a part thereof is slightly curved or meandering.
The plurality of fourth deformation guiding portions 16 are arranged at intervals in the vertical direction X, for example, at equal intervals.

The fourth deformation guiding portion 16 preferably includes a groove or a slit that opens to the non-skin side of the absorber 4. The fourth deformation guiding portion 16 includes, for example, a groove having a low basis weight formed upward from the core lower surface 7b located on the non-skin side of the absorbent core 7. As a result, the fourth deformation guiding portion 16 has low rigidity and is easily deformed so as to be recessed toward the non-skin side, and deformation such as raising the block portion 12 in a convex shape is easily induced.

As shown in the enlarged view of FIG. 5, the plurality of first deformation guiding portions 11 are arranged with a first spacing d1 in the horizontal direction Y, and the fourth deformation guiding portion 16 has a first spacing in the vertical direction X. They are arranged with a second interval d2 larger than d1. That is, the block portion 12 surrounded by the first deformation guiding portion 11 and the fourth deformation guiding portion 16 is formed in a rectangular shape long in the vertical direction X in a plan view. The first interval d1 is a dimension in the lateral direction Y of the block portion 12 sandwiched between the adjacent first deformation guiding portions 11. Similarly, the second interval d2 is a dimension in the vertical direction X of the block portion 12 sandwiched between the adjacent fourth deformation guiding portions 16. The first spacing d1 corresponding to the different block portions 12 may be the same or different. Similarly, the second spacing d2 corresponding to the different block portions 12 may be the same or different. However, in one block portion 12, it is preferable that the second interval d2 corresponding to the dimension in the vertical direction X is larger than the first interval d1 corresponding to the dimension in the horizontal direction Y.

With this configuration, even when a force in the vertical direction X is applied from the ventral region A or the dorsal region B to the inseam region C, the fourth deformation guiding portion 16 serves as the starting point of the deformation, thereby inducing the fourth deformation. The block portion 12 between the portions 16 is easily deformed so as to bulge toward the skin side. As a result, the swelling of the block portion 12 is further promoted, and the diaper 1 is more easily fitted to the wearer's crotch portion. Further, since the first deformation guiding portion 11 is arranged at a narrower interval than the fourth deformation guiding portion 16, the starting points of deformation with respect to the external force from the lateral direction Y are densely arranged. As a result, a plurality of convex portions having a narrow width in the lateral direction Y are formed by the external force, and the skin care agent can be more efficiently transferred through these convex portions.

[Composition of surface sheet]
As shown in FIG. 2, the surface sheet 2 has a plurality of convex portions 17 located at least in the inseam region C and projecting in the thickness direction Z.
As shown in FIG. 6, the plurality of convex portions 17 have a longitudinal length in the lateral direction Y in a plan view. In the example shown in FIG. 6, each convex portion 17 has a substantially elliptical shape having a long axis in the lateral direction Y in a plan view.

As a specific configuration, as shown in FIG. 6, a plurality of concave portions 18 are arranged around the convex portion 17. The recess 18 is a portion of the surface sheet 2 that is recessed downward in the thickness direction Z, and is, for example, a portion that is squeezed in the thickness direction Z by embossing. As an example, the concave portion 18 is formed in a substantially rectangular shape in a plan view, and is dispersedly arranged around the convex portion 17. By these recesses 18, the region surrounded by the recesses 18 projects upward, and the protrusions 17 are formed. In the example shown in FIG. 6, a pair of convex portions 17 are arranged on both sides of each convex portion 17 in the horizontal direction Y, and two pairs of concave portions 18 arranged in the horizontal direction Y are arranged on both sides of each convex portion 17 in the vertical direction X. To. As a result, a convex portion 17 having a longitudinal length in the lateral direction Y can be formed.

Since the thickness of the surface sheet 2 is thinner in the concave portion 18 than in the convex portion 17, it is likely to be a starting point of deformation. That is, the surface sheet 2 is easily deformed in the region around the horizontally long convex portion 17, and the region serving as the starting point of the deformation is provided so as to extend in the lateral direction Y. As a result, in the inseam region C, the starting point of the deformation extending in the lateral direction Y is easily formed due to the synergistic effect of the fourth deformation guiding portion 16 extending in the lateral direction Y and the convex portion 17, and the inseam region C rises in a convex shape. It becomes easy to be deformed. Therefore, the inseam region C can be more easily fitted to the wearer's crotch portion, the skin care agent can be more easily transferred to the wearer's skin, and the skin care effect can be further enhanced.

[Positional relationship between the elastic member for forming waist gathers and the first deformation guiding portion]
As shown in FIG. 1, the diaper 1 further includes a third elastic member (elastic member) 19 for forming waist gathers, which is provided in the ventral region A or the dorsal region B and expands and contracts in the lateral direction Y. You may be. The third elastic member 19 is a thread-like or band-shaped elastic member that can expand and contract in the lateral direction Y. “Expanding and contracting in the lateral direction Y” of the third elastic member 19 may be expanded and contracted in the lateral direction Y as a whole, and may be expanded and contracted in a direction including a vector component parallel to the lateral direction Y.
The third elastic member 19 is sandwiched between, for example, two sheet materials (not shown) in a state of being extended in the lateral direction Y. The third elastic member 19 is arranged together with these sheet materials in the ventral region A or the dorsal region B in a state of being extended in the lateral direction Y.

In the example shown in FIG. 1, the third elastic member 19 is located at least on the lateral Y side portion of the dorsal region B, and the left and right second elastic members 10 are separated from each other in the lateral Y central portion of the dorsal region B. ing. The lateral Y-side portion of the dorsal region B means both side portions of the dorsal region B when the widest portion in the lateral direction Y is divided into three equal parts in the lateral direction Y. The central portion of the dorsal region B in the lateral direction Y means the central portion of the dorsal region B when the widest portion in the lateral direction Y is divided into three equal parts in the lateral direction Y. A plurality of second elastic members 10 are arranged side by side in the vertical direction X on each of the left and right lateral Y side portions of the dorsal region B.

The third elastic member 19 is preferably arranged as follows in relation to the first deformation guiding portion 11.
As shown in FIG. 1, the third elastic member 19 is arranged so as not to overlap the virtual region extending the first deformation guiding portion 11 in the vertical direction X in a plan view. That is, the virtual region is configured to pass through the gap between the left and right third elastic members 19, and the third elastic member 19 and the first deformation guiding portion 11 do not overlap in the lateral direction Y.

In this configuration, only the regions on both sides of the lateral Y of the first deformation guiding portion 11 are affected by the expansion and contraction of the third elastic member 19. Therefore, the first deformation guiding portion 11 itself is less likely to be affected by wrinkles and the like formed by the expansion and contraction of the third elastic member 19, and the deformation inducing action of the first deformation guiding portion 11 can be stably exerted. .. As a result, the skin care agent-containing region 13 can be stably formed into a convex shape, and the skin care agent can be more reliably transferred to the wearer's skin.

[Detailed shape of absorbent core]
In the example shown in FIG. 3, the absorbent core 7 includes a constricted portion 20 having at least a part located in the inseam region C and having a shape confined inward in the lateral direction Y in a plan view. The absorbent core 7 has, for example, a planar shape that is symmetrical in the lateral direction Y.
For example, the constricted portion 20 includes a ventral tapered portion 20a and a dorsal tapered portion 20b located on the dorsal side of the ventral tapered portion 20a. The width of the ventral tapered portion 20a gradually increases in the lateral direction toward the ventral side. The width of the dorsal tapered portion 20b gradually increases in the lateral direction toward the dorsal side. The ventral tapered portion 20a and the dorsal tapered portion 20b are configured to be asymmetrical with respect to a straight line passing between them and extending in the lateral direction Y.

The width increase rate of the lateral direction Y per vertical X unit length in the ventral tapered portion 20a is preferably larger than the width increase rate of the lateral direction Y per vertical X unit length in the dorsal tapered portion 20b. .. The "width increase rate in the lateral direction Y per unit length in the longitudinal direction X in the ventral tapered portion 20a" is the width of the widest portion in the lateral direction Y of the ventral tapered portion 20a and the lateral portion of the ventral tapered portion 20a. It is a value obtained by dividing the difference from the width of the narrowest portion in the direction Y by the length of the ventral tapered portion 20a in the vertical direction X. Similarly, the "width increase rate of the lateral Y in the longitudinal X unit length of the dorsal tapered portion 20b" is the width of the widest portion of the dorsal tapered portion 20b in the lateral direction Y and the dorsal tapered portion. It is a value obtained by dividing the difference from the width of the narrowest portion in the horizontal direction Y of 20b by the length of the dorsal tapered portion 20b in the vertical direction X. That is, the side edge of the ventral tapered portion 20a has a shape that steeply extends outward in the lateral direction Y from the side edge of the dorsal tapered portion 20b.

By having the constricted portion 20 having a constricted shape of the absorbent core 7, the influence of an external force applied in the lateral direction Y from the wearer's leg can be appropriately suppressed. As a result, the absorbent core 7 is not significantly compressed and deformed, and a preferable convex shape starting from the first deformation guiding portion 11 is easily formed. Further, since the ventral tapered portion 20a has a shape that spreads more steeply, it becomes difficult for the leg to hit the ventral tapered portion 20a when the wearer moves the leg. As a result, it is possible to suppress the displacement of the entire diaper due to the movement of the legs and the large deformation of the absorber 4 (absorbent core 7), and it is possible to maintain the fit in the inseam region C. Therefore, it is possible to maintain the skin care effect of the skin care agent-containing region 13 during wearing.

In the example shown in FIG. 3, the absorptive core 7 has a ventral wide portion 21 and a dorsal wide portion having regions having a constant lateral Y width on the ventral side and the dorsal side of the constricted portion 20, respectively. Includes part 22. In addition, "the width is constant" in a certain region means that the difference in width dimension in the region is within 20% when the minimum width in the lateral direction Y of this region is 100%. The width of the ventral wide portion 21 and the width of the dorsal wide portion 22 may be the same or different.

The absorbent core 7 is not limited to the shape shown in FIG. 3, and may take various shapes. The constricted portion 20 of the absorbent core 7 may include an intermediate portion 20c having a constant width, which is located between the ventral tapered portion 20a and the dorsal tapered portion 20b, as shown in FIG. 7, for example. Also in this case, the width increase rate of the lateral direction Y per vertical X unit length in the ventral tapered portion 20a is larger than the width increase rate of the horizontal direction Y per vertical X unit length in the dorsal tapered portion 20b. By configuring the structure so as to be large, it is possible to obtain the same action and effect as the configuration shown in FIG.

[Additional explanation of this embodiment]
Hereinafter, the description of this embodiment will be supplemented.

(Structure example of each deformation induction part)
The width of the first deformation guiding portion 11 formed as the vertical groove in the lateral direction Y is preferably 0.5 mm or more, more preferably 0.5 mm or more, from the viewpoint of more reliably promoting the convex deformation by the first deformation guiding portion 11. It is 1 mm or more, preferably 20 mm or less, and more preferably 10 mm or less.
The length of the first deformation guiding portion 11 in the vertical direction X is relative to the length of the absorber 4 in the vertical direction X in the portion where the first deformation guiding portion 11 is arranged, from the viewpoint of more reliably deforming the absorber 4. It is preferably 1/3 or more, more preferably 1/2 or more, preferably 1 or less, and more preferably 4/5 or less. Specifically, the length of the first deformation guiding portion 11 in the vertical direction X is preferably 30 mm or more, more preferably 100 mm or more, preferably 540 mm or less, and more preferably 400 mm or less.

The width of the second deformation guiding portion 14 formed as the lateral groove in the vertical direction X is preferably 0.5 mm or more, more preferably 1 mm from the viewpoint of more reliably promoting the deformation starting from the second deformation guiding portion 14. The above is preferably 20 mm or less, and more preferably 10 mm or less.
The length of each of the second deformation guiding portions 14 in the lateral direction Y is relative to the width of the absorber 4 in the lateral direction Y in the portion where the second deformation guiding portion 14 is arranged, from the viewpoint of more reliably deforming the absorber 4. It is preferably 1/4 or more, more preferably 1/3 or more, preferably 1 or less, and more preferably 2/3 or less. Specifically, the length of each second deformation inducing portion 14 in the lateral direction Y is preferably 20 mm or more, more preferably 30 mm or more, preferably 90 mm or less, and more preferably 80 mm or less.

The width of the third deformation guiding portion 15 formed as the vertical groove in the lateral direction Y is preferably 0.5 mm or more, more preferably 0.5 mm or more, from the viewpoint of more reliably promoting the deformation starting from the third deformation guiding portion 15. It is 1 mm or more, preferably 20 mm or less, and more preferably 10 mm or less.
The length of the third deformation guiding portion 15 in the vertical direction X is preferably 40 mm or more, more preferably 60 mm or more, preferably 150 mm or less, and more preferably 120 mm or less.

The width of the fourth deformation guiding portion 16 formed as the lateral groove in the vertical direction X is preferably 0.5 mm or more, more preferably 1 mm, from the viewpoint of more reliably promoting the deformation starting from the fourth deformation guiding portion 16. The above is preferably 20 mm or less, and more preferably 10 mm or less.
The length of each of the fourth deformation guiding portions 16 in the lateral direction Y is the length of the absorber 4 in the lateral direction Y in the portion where the fourth deformation guiding portion 16 is arranged, from the viewpoint of more reliably deforming the absorber 4. On the other hand, it is preferably 1/4 or more, more preferably 1/3 or more, preferably 1 or less, and more preferably 2/3 or less. Specifically, the length of the fourth deformation guiding portion 16 in the lateral direction Y is 20 mm or more, more preferably 30 mm or more, preferably 180 mm or less, and more preferably 130 mm or less.

The distance d1 between the adjacent first deformation guiding portions 11 is the lateral direction Y of the absorber 4 in the portion where the first deformation guiding portion 11 is arranged, from the viewpoint of deforming the block portion 12 into a convex shape in which the skin care agent can easily migrate. (Minimum width when the width of the absorber is not constant), preferably 0.05 or more, more preferably 0.1 or more, preferably 0.9 or less, more preferably 0.5. It is as follows. Specifically, the interval d1 is preferably 3 mm or more, more preferably 5 mm or more, preferably 20 mm or less, and more preferably 15 mm or less.
From the viewpoint of improving the fit of the inseam region C, the distance d2 between the adjacent fourth deformation guiding portions 16 is preferably 1 or more, more preferably 1. It is 5 or more, preferably 4.0 or less, and more preferably 3.0 or less. Specifically, the interval d2 is preferably 10 mm or more, more preferably 15 mm or more, preferably 40 mm or less, and more preferably 30 mm or less.

(Basis weight of absorbent core)
The basis weight of the absorbent core 7 excluding each deformation induction portion is preferably 300 g / m ² or more, more preferably 350 g / m ² or more, from the viewpoint of suppressing discomfort when wearing the diaper 1 and improving the fit. It is preferably 900 g / m ² or less, and more preferably 800 g / m ² or less.
When the first deformation guiding portion 11, the second deformation guiding portion 14, the third deformation guiding portion 15 or the fourth deformation guiding portion 16 includes a groove having a low basis weight, the first deformation guiding portion 11 and the second deformation guiding portion 11 14, The basis weight of the third deformation guiding portion 15 or the fourth deformation guiding portion 16 is preferably 100 g / m ² or more, more preferably 150 g / m ^{2 from the viewpoint of promoting deformation starting from the deformation guiding portion.} The above is preferably 500 g / m ² or less, and more preferably 400 g / m ² or less.

(Measuring method of basis weight of absorbent core)
The measurement target area of the absorbent core 7 is cut with a single-edged razor manufactured by Feather Co., Ltd. to obtain small pieces so as to have a predetermined area. The weight of these small pieces is measured using an electronic balance (A & D electronic balance GR-300, accuracy: 4 digits after the decimal point). The calculated weight is divided by the area of the small pieces of each part to calculate the basis weight of the small pieces. For each part, the average of the basis weight of 5 small pieces is defined as the basis weight.

(Example of composition of skin care agent-containing area)
The width of the skin care agent-containing region 13 in the lateral direction Y is preferably 10 mm or more, more preferably 20 mm or more, preferably 70 mm or less, and more preferably 50 mm or less from the viewpoint of sufficiently transferring the skin care agent to the wearer's skin. Is.
The length of the skin care agent-containing region 13 in the vertical direction X is preferably 100 mm or more, more preferably 150 mm or more, preferably 600 mm or less, and more preferably 450 mm from the viewpoint of sufficiently transferring the skin care agent to the wearer's skin. It is as follows.

(Specific examples of skin care agents)
As the skin care agent, those having effects such as protection and healing on the wearer's skin can be used without particular limitation. For example, a preferred skin care agent includes a diamide derivative represented by the following formula (I). The diamide derivative represented by the following formula (I) is the diamide derivative of the invention described in International Publication No. WO00 / 61097, and has a medicinal effect of improving the water retention capacity and barrier function of the stratum corneum. ing. When the diamide derivative is transferred to the wearer's skin while wearing the diaper 1, it functions as an oil-based skin care agent and can suppress / improve skin irritation. When the above diamide derivative is used as a skin care agent, only one type may be used, or two or more types may be used in combination.

Further, as another skin care agent that can be arranged in the skin care agent-containing region 13, for example, an oil-based skin care agent used as an emollient agent in the field of cosmetics can be used. Specific examples of the other skin care agents include liquid paraffin, silicone oil, animal and vegetable oils (olive oil, hooba oil, Benibana oil, squalane, squalane, etc.), monoglyceride, diglyceride, triglyceride, aliphatic ethers (myristyl-1,3-). Dimethylbutyl ether, palmityl-1,3-dimethylbutyl ether, stearyl-1,3-dimethylbutyl ether, palmityl-1,3-methylpropyl ether, stearyl-1,3-methylpropyl ether, etc.), isostearyl-cholesterol ester, paraffin Wax, C _12- C ₂₂ fatty acids, C _12- C ₄₄ fatty acid ethers, C _12- C ₂₂ aliphatic alcohols, vaseline, fatty acid sorbitan esters (any of monoesters, diesters, and triesters), polyoxyethylene fatty acids Sorbitane ester (any of monoester, diester, and triester), metal stone test (magnesium stearate, etc.), sucrose fatty acid ester, cyclodextrin fatty acid ester, silicone, silicone resin, JP-A-2004-298643 Alternatively, examples thereof include an emollient agent used in the invention described in JP-A-2008-522772 and a lotion composition containing an emollient agent and an fixing agent.
The various skin care agents may be used alone or in combination of two or more.

From the viewpoint of not lowering the permeability of excreted body fluid on the surface sheet 2, and C ₁₂ -C ₂₂ fatty alcohol (preferably stearyl alcohol), is preferably used a mixture of diamide derivative of the above formula (I) it can. The mixing ratio of stearyl alcohol to the diamide derivative of the above formula (I) (stearyl alcohol / diamide derivative) determines the transferability of the skin care agent to the skin, the skin care effect, the feel when used, and the body fluid permeability of the surface sheet 2. From the viewpoint, it is preferably 90/10 to 50/50 (mass%). It is preferable that these mixtures are heated to increase their fluidity and then coated on the surface sheet 2 to adhere them. After adhering to the surface sheet 2, the fluidity is lowered by leaving it at room temperature so that it can be easily held by the surface sheet 2.

(Example of surface sheet configuration)
As an example, the surface sheet 2 is configured as a laminate of a first sheet arranged on the skin side and a second sheet arranged on the non-skin side. These laminates are embossed and partially joined in the recess 18 described above. As a result, the region surrounded by the concave portion 18 of the first sheet projects toward the skin side (upward), and the configuration having the above-mentioned convex portion 17 is realized. Examples of the embossing in the recess 18 include known embossing such as embossing with or without heat and ultrasonic embossing. The laminate can be produced, for example, according to the method for producing a composite sheet described in Japanese Patent Application Laid-Open No. 2015-12343.

The convex portion 17 has, for example, a hollow structure having a region containing no sheet material inside, but may have a solid structure containing the sheet material inside. In the example shown in FIG. 6, the convex portion 17 has a substantially elliptical shape whose major axis coincides with the lateral direction Y in a plan view, but various shapes can be adopted. The planar shape of the convex portion 17 may be defined by the arrangement of the concave portion 18.

Each recess 18 is dispersed and regularly arranged. Since the recess 18 is embossed as described above, the recess 18 is compacted and has high rigidity as compared with other portions. By arranging such recesses 18 in a dispersed manner, the flexibility of the surface sheet 2 can be improved without continuously arranging the portions where the hardness is felt.

The first sheet and the second sheet are preferably composed of an air-through non-woven fabric or a spunbonded non-woven fabric. The first sheet on the skin side is more preferably composed of an air-through non-woven fabric. As the first sheet and the second sheet, preferably the same type of sheet material can be used from the viewpoint of increasing the bonding strength in the recess 18. The basis weight of each of the first sheet and the second sheet is preferably 10 g / m ² or more, more preferably 12 g / m ² or more, preferably 30 g / m ² or less, still more preferably 25 g / m ² or less. ..

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

For example, the absorber 4 does not have to have at least one of the second deformation guiding portion 14, the third deformation guiding portion 15, or the fourth deformation guiding portion 16. The arrangement and number of the first deformation guiding portions 11 are also not limited to the illustrated example. Further, the absorbent core 7 may not have a constricted portion 20 and may have a substantially constant width along the vertical direction X.

In the above embodiment, an example of a deployable disposable diaper is shown as an absorbent article, but the present invention is not limited to this, and a pants-type disposable diaper or the like may be used.

1 ... Diapers (disposable diapers)
2 ... Front sheet 3 ... Back sheet 4 ... Absorber 11 ... First deformation inducer 13 ... Skin care agent-containing area A ... Ventral area B ... Dorsal area C ... Inseam area

Claims (7)

It is provided with an absorbent body and a liquid-permeable surface sheet arranged on the skin side of the absorbent body, and extends from the ventral side of the wearer to the dorsal side through the crotch portion and a horizontal direction orthogonal to the vertical direction. And, the inseam region located in the crotch portion, the ventral region located on the ventral side of the inseam region, and the dorsal region located on the dorsal side of the inseam region. Separated disposable diapers
The absorber has a plurality of first deformation-inducing portions extending in the vertical direction and arranged at intervals in the horizontal direction in the inseam region.
The surface sheet is located in the lateral central portion of the inseam region and has a skin care agent-containing region containing a skin care agent.
The skin care agent-containing region is a disposable diaper arranged so as to cross the plurality of first deformation guiding portions in the lateral direction in a plan view seen from the thickness direction of the disposable diaper. The disposable diaper according to claim 1, wherein the absorber is located in the ventral region or the dorsal region and has a plurality of second deformation guiding portions extending in the lateral direction. The absorber is located in the ventral region or the dorsal region, is separated from any of the plurality of first deformation guiding portions, and is vertically outside the plurality of first deformation guiding portions in the lateral direction. The disposable diaper according to claim 1 or 2, which has a third deformation guiding portion extending in a direction. The plurality of first deformation guiding portions are arranged at a first interval in the lateral direction.
The absorber intersects the plurality of first deformation guiding portions in the inseam region and extends in the lateral direction, respectively, and is arranged in the vertical direction with a second interval larger than the first interval. The disposable diaper according to any one of claims 1 to 3, which has a plurality of fourth deformation induction portions. The surface sheet has a plurality of protrusions located at least in the inseam region and projecting in the thickness direction.
The disposable diaper according to claim 4, wherein the plurality of convex portions have a longitudinal length in the lateral direction in the plan view. The disposable diaper is
An elastic member for forming waist gathers, which is provided in the ventral region or the dorsal region and expands and contracts in the lateral direction, is further provided.
The item according to any one of claims 1 to 5, wherein the elastic member is arranged so as not to overlap the virtual region in which the plurality of first deformation guiding portions are extended in the vertical direction in the plan view. Disposable diapers. The absorber has an absorbent core and
The absorbent core
At least a part thereof is located in the inseam region, and includes a constricted portion having a shape confined inward in the lateral direction in the plan view.
The constricted part is
A ventral taper whose lateral width gradually increases toward the ventral side,
Includes a dorsal tapered portion that is located dorsally from the ventral tapered portion and whose lateral width gradually increases toward the dorsal side.
The lateral width increase rate per the longitudinal unit length in the ventral tapered portion is larger than the lateral width increase rate per the longitudinal unit length in the dorsal tapered portion. The disposable diaper according to any one of 6 to 6.

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