JP2021065631A - Absorbent article - Google Patents

Abstract

To provide an absorbent article that has an absorber less likely to lose its shape even when being worn for a long term and can stably exert a desired absorption performance.SOLUTION: An absorbent article of the invention includes: a pair of compressed grooves (61, 62) extending in a longitudinal direction L; and multiple hole parts (7) positioned between the pair of compressed grooves (61, 62) in a width direction W. Each of groove bottom parts (61B, 62B) of the pair of compressed grooves (61, 62) overlaps on a position in a thickness direction T of each of the hole part bottoms (7B) of the multiple hole parts (7) in the width direction W in cross sectional view.SELECTED DRAWING: Figure 1

Description

The present invention relates to absorbent articles such as sanitary napkins.

Absorbent items such as sanitary napkins and disposable diapers are worn for a long time while in contact with the wearer's crotch area. In addition to quickly absorbing the excreted excrement, it is required to have excellent flexibility and fit to the wearer's body.

Then, in order to further improve the absorption performance of the absorbent article, there is known an absorbent article in which a squeezing groove extending in the longitudinal direction and a plurality of squeezed portions are formed.
For example, Patent Document 1 describes a sanitary napkin including a main body portion extending in the longitudinal direction and a pair of flap portions extending on both sides in the width direction at a substantially central portion in the longitudinal direction. A squeeze groove extending along the longitudinal direction formed by squeezing the surface sheet and the absorber from the skin side and the non-skin side in and around the cloaca contact area, and a plurality of squeezes located inside the squeeze groove. A sanitary napkin having a portion is disclosed.

Japanese Unexamined Patent Publication No. 2019-111091

The sanitary napkin (absorbent article) disclosed in Patent Document 1 can stably maintain the shape of the pressed portion for improving the absorption performance, and suppresses the absorber from becoming hard. Although it is said that the absorbent article can be worn for a long time while contacting the wearer's crotch, the absorbent article such as a sanitary napkin is in the width direction of the absorbent article from both legs of the wearer. When the force applied to the crotch (crotch tightening force) is applied for a long time, the absorber in the absorbent article "shapes out", and the desired effect of the above-mentioned squeezed portion or the like (that is, the absorption performance is improved). There was a risk that it would be difficult to obtain (effects such as).

Therefore, an object of the present invention is to provide an absorbent article in which the absorber does not easily lose its shape even when worn for a long period of time and can stably exhibit the desired absorption performance.

One aspect (aspect 1) of the present invention is an absorbent article having a longitudinal direction, a width direction, and a thickness direction, comprising a front surface sheet, a back surface sheet, and an absorber located between the sheets. hand,
The absorbent article is viewed in a plan view.
A pair of squeezing grooves located on both sides of the central axis extending in the longitudinal direction and extending in the longitudinal direction.
It has a plurality of holes located between the pair of squeezing grooves in the width direction, and has a plurality of holes.
Each of the pair of squeezed grooves has a high-density groove bottom in which at least the surface sheet and the absorber are squeezed from the skin-facing surface side of the absorbent article in the thickness direction.
Each of the plurality of holes has a high-density hole bottom in which at least the surface sheet and the absorber are squeezed from the skin-facing surface side of the absorbent article in the thickness direction.
Further, the positions of the groove bottom portion and the hole bottom portion in the thickness direction overlap in the width direction in a cross-sectional view of the absorbent article along the width direction. It is a sex article.

In the absorbent article of the present aspect 1, the positions of the high-density groove bottom and the hole bottom in the thickness direction may be referred to as a cross-sectional view (hereinafter, simply referred to as "cross-sectional view") along the width direction of the absorbent article. ), The groove bottom and the hole bottom, which overlap in the width direction of the absorbent article and have relatively high strength (rigidity), are lined up in the width direction. In the inner part in the width direction, even if a force is applied from both legs of the wearer in the width direction of the absorbent article, it has strength that can withstand the force, and the absorber is less likely to lose its shape. ing. As a result, the absorbent article of the first aspect stably exhibits the excellent absorption performance exhibited by the plurality of holes located on the inner side in the width direction with respect to the squeezing groove even when worn for a long time. be able to.
Therefore, in the absorbent article of the first aspect, the absorber does not easily lose its shape even when worn for a long time, and the desired absorption performance can be stably exhibited.

Further, in another aspect (aspect 2) of the present invention, in the absorbent article of the first aspect, the absorbent article has a plurality of adhesive portions extending in the longitudinal direction on the surface on the non-skin facing surface side. The adhesive portion is arranged so as not to overlap with the squeezing groove in the thickness direction.

In the conventional absorbent article, the position of the adhesive portion for adhesively fixing the absorbent article to the wearer's underwear or the like, which is arranged on the surface facing the non-skin surface, is not specifically considered. For example, when the adhesive portion overlaps with the squeezing groove functioning as a bending base point (hinge) in the thickness direction, the degree of freedom when the absorbent article bends with the squeezing groove as the bending base point is reduced, and absorption is performed. It becomes difficult for the sex article to be deformed into a shape that conforms to the body shape of the wearer, and as a result, the fit of the absorbent article may be deteriorated.
On the other hand, in the absorbent article of the second aspect, the adhesive portion for fixing the clothes is arranged so as not to overlap with the squeezing groove in the thickness direction, and the function of the squeezing groove is less likely to be impaired. It is easy to secure the degree of freedom when the article bends with the squeezing groove as the bending base point, and the absorbent article is easily deformed into a shape that conforms to the wearer's body shape. As a result, the absorbent article of the second aspect can exhibit excellent fit.

Further, in still another aspect (aspect 3) of the present invention, in the absorbent article of the second aspect, at least a part of the adhesive portion is a portion between the squeeze groove and the hole portion and the thickness direction. It is characterized in that it is arranged so as to correspond to.

The absorbent article of the third aspect is squeezed when the absorbent article is worn because at least a part of the adhesive portion is arranged so as to correspond to the portion between the squeezing groove and the hole in the thickness direction. Since the portion between the groove and the hole is fixed to the wearer's clothing, the groove bottom and the hole bottom are less likely to be displaced in the thickness direction. That is, it is easy to maintain a state in which the groove bottom and the hole bottom are aligned in the width direction in a cross-sectional view. As a result, the absorbent article of the third aspect can further secure the strength capable of resisting the force applied in the width direction of the absorbent article from both legs of the wearer in the portion on the inner side in the width direction from the squeezing groove. Therefore, the shape of the absorber is less likely to be lost, and as a result, the desired absorption performance can be exhibited more stably.

In yet another aspect (aspect 4) of the present invention, in the absorbent article of the above aspect 2 or 3, at least a part of the adhesive portion is a portion straddling between two or more adjacent holes in a plan view. It is characterized in that it is arranged so as to correspond to the thickness direction.

The absorbent article of the fourth aspect is arranged so that at least a part of the adhesive portion corresponds to a portion straddling between two or more (that is, a plurality of) adjacent holes in a plan view. When the absorbent article is worn, the portion corresponding to the plurality of holes is fixed to the wearer's clothing, so that the position of the bottom of the hole in the thickness direction is less likely to occur in the plurality of holes. That is, it is easy to maintain a state in which the bottoms of the plurality of holes are aligned in the width direction in a cross-sectional view. As a result, the absorbent article of the fourth aspect has a portion having a plurality of holes located on the inner side in the width direction with respect to the squeezing groove (hereinafter, may be referred to as a “hole forming region”). Since it becomes easier to secure the strength that can withstand the force applied from both legs of the wearer in the width direction of the absorbent article, the shape of the absorber is less likely to be lost, and as a result, the desired absorption performance is more stable. Can be demonstrated.

In yet another aspect (aspect 5) of the present invention, in any of the absorbent articles of aspects 1 to 4, the bottom of the hole is the skin of the absorbent article in which at least the surface sheet and the absorbent body are both present. At the same time as being squeezed in the thickness direction from the facing surface side, at least the absorber is squeezed in the thickness direction from the non-skin facing surface side of the absorbent article.

In the absorbent article of the fifth aspect, the bottom of the hole is squeezed not only from the side facing the skin but also from the side facing the non-skin, so that the bottom of the hole becomes denser and has rigidity. Since it is high, it becomes easy to maintain the shape of the hole, and in the hole forming region located on the inner side in the width direction from the squeeze groove, it resists the force applied from both legs of the wearer in the width direction of the absorbent article. It becomes easier to secure the possible strength. As a result, the absorbent article of the fifth aspect is less likely to lose its shape in the absorber, and as a result, the desired absorption performance can be exhibited more stably.

In yet another aspect (aspect 6) of the present invention, in any of the absorbent articles of aspects 1 to 5, at least the surface sheet and the absorbent body are opposed to the skin of the absorbent article at the bottom of the groove. At the same time that the absorber is squeezed in the thickness direction from the surface side, at least the absorber is squeezed in the thickness direction from the non-skin facing surface side of the absorbent article.

In the absorbent article of the sixth aspect, the groove bottom is squeezed not only from the skin facing surface side but also from the non-skin facing surface side, so that the groove bottom is in a higher density state and the rigidity is increased. Therefore, in the portion on the inner side in the width direction from the squeezing groove, it becomes easier to further secure the strength capable of resisting the force applied from both legs of the wearer in the width direction of the absorbent article.
Further, since the absorbent article of the sixth aspect is easily bent on both sides of the skin facing surface side and the non-skin facing surface side with the pressing groove as the bending base point, the degree of freedom of deformation is high and the absorbent article is worn. It is more easily deformed into a shape that conforms to the body shape of the person. As a result, the absorbent article of the sixth aspect can exhibit even better fit.

In still another aspect (aspect 7) of the present invention, in any of the absorbent articles of aspects 1 to 6, the surface sheet is made of a non-woven fabric containing thermoplastic resin fibers.

In the absorbent article of the present aspect 7, the surface sheet is made of a non-woven fabric containing a thermoplastic resin fiber, and the thermoplastic resin fiber is squeezed because at least a part thereof melts when a plurality of pores are formed by squeezing. The surface (that is, the inner surface of the pores) of each of the plurality of pores formed later is at least partially covered with a melt formed by solidifying the molten thermoplastic resin fibers. As a result, each of the plurality of holes has high rigidity, and it is easy to maintain the shape of the holes, so that the function of the holes can be exhibited more stably.
Further, since the above-mentioned melt of the thermoplastic resin fiber is also present at the bottom of the hole, the bottom of the hole has high rigidity, and in the hole forming region, in the width direction of the absorbent article from both legs of the wearer. There is also an advantage that it is easier to secure the strength that can withstand the applied force.

In yet another aspect (aspect 8) of the present invention, in any of the absorbent articles of aspects 1 to 7, an intermediate sheet made of a non-woven fabric containing a thermoplastic resin fiber is inserted between the surface sheet and the absorber. Further prepared.

In the absorbent article of the eighth aspect, the intermediate sheet arranged between the surface sheet and the absorber is made of a non-woven fabric containing thermoplastic resin fibers, and the thermoplastic resin fibers have at least a part of holes having a plurality of holes. Since it melts when it is formed by pressing, each of the plurality of pores formed after pressing is formed by solidifying the molten thermoplastic resin fibers, and the constituent fibers near the inner surface of the pores are bonded to each other. , At least partially reinforced. As a result, each of the plurality of holes has high rigidity, and it is easy to maintain the shape of the holes, so that the function of the holes can be exhibited more stably.
Further, since the above-mentioned melt of the thermoplastic resin fiber is also present at the bottom of the hole, the bottom of the hole has high rigidity, and in the hole forming region, in the width direction of the absorbent article from both legs of the wearer. There is also an advantage that it is easier to secure the strength that can withstand the applied force.

In yet another aspect (aspect 9) of the present invention, in any of the absorbent articles of aspects 1-8, the absorber corresponds to a region in which the plurality of holes are formed in a plan view. The portion is characterized by being a middle and high portion having a relatively large thickness.

In the absorbent article of the present aspect 9, since the portion corresponding to the hole forming region is a middle and high portion having a relatively large thickness, a deep hole can be formed and a higher density hole can be formed. The bottom can be formed. As a result, the absorbent article of the ninth aspect can further improve the strength of the bottom of the holes while further improving the absorption performance of the plurality of holes.

In yet another aspect of the present invention (aspect 10), in any of the absorbent articles of aspects 1-9, the absorber has a portion between adjacent holes that bulges toward the skin-facing surface side. It is characterized in that it is curved like this.

In the absorbent article of the present aspect 10, since the portion between the adjacent holes is bulged, it is difficult for the plurality of holes (particularly, the openings of the holes) to touch the skin of the wearer, and a good touch is obtained. be able to.

In yet another aspect of the present invention (Aspect 11), in any of the absorbent articles of aspects 1-10, the surface sheet has a strength of 0.1N to 1.3N when stretched by 10% in the width direction. It is characterized by being.

In the absorbent article of the 11th aspect, since the surface sheet has a predetermined elongation property in the width direction, a predetermined bulkiness and cushioning property can be ensured between the holes of the plurality of holes.

According to the present invention, it is possible to provide an absorbent article in which the absorber does not easily lose its shape even when worn for a long period of time and can stably exhibit the desired absorption performance.

FIG. 1 is a plan view of the sanitary napkin 1 according to the embodiment of the present invention as viewed from the surface sheet 2 side in the thickness direction T in an unfolded state. FIG. 2 is an enlarged end view of the sanitary napkin 1 in FIG. 1 along the line II-II. FIG. 3 is an enlarged end view corresponding to FIG. 2 in the sanitary napkin 1 according to another embodiment of the present invention. FIG. 4 is an enlarged end view corresponding to FIG. 2 in the sanitary napkin 1 according to still another embodiment of the present invention.

Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings. In the present specification, unless otherwise specified, "an object placed on a horizontal plane in an unfolded state (for example, an absorbent article) is placed on the upper side in the vertical direction (when the object is an absorbent article). Seeing in the thickness direction of the object from the surface sheet side) is simply called "planar view".

(Various definitions)
As shown in FIGS. 1 and 2, the sanitary napkin 1 according to an embodiment of the absorbent article of the present invention has a longitudinal direction L, a width direction W, and a thickness direction T orthogonal to each other, and further has a width. through the central direction W, and a central axis extending in the longitudinal direction L C _{L (hereinafter,} simply referred to as "longitudinal direction L the center axis extending in the C _L".) and passes through the center in the longitudinal direction L, and the width direction W It has a central axis C _W extending in (hereinafter, simply referred to as “central axis C _W extending in the width direction W”).

In the present specification, in the longitudinal direction L of the sanitary napkin 1, the _{proximal side relative to the central axis C W} extending in the width direction W is referred to as the inner side of the longitudinal direction L, and is in the width direction W. The distal side relative to the extending central axis C _W is called the outer side in the longitudinal direction L.
Similarly, in the width direction W of the sanitary napkin 1, referred to as inner side in the width direction W relatively proximal side with respect to the central axis C _L extending in the longitudinal direction L, the center axis extending in the longitudinal direction L C _{The distal side relative to L is referred} to as the outer side in the width direction W.

Further, in the present specification, in the longitudinal direction L of the sanitary napkin 1, one side that is relatively proximal to the wearer's abdomen when the sanitary napkin 1 is worn is referred to as an anterior side, and is referred to as a wearer. The other side, which is the distal side relative to the abdomen, is called the posterior side.

Further, in the present specification, in the thickness direction T of the sanitary napkin 1, when the sanitary napkin 1 is worn, the proximal side with respect to the wearer's skin surface is referred to as the skin facing surface side S1. The side relatively distal to the wearer's skin surface is referred to as the non-skin facing surface side S2.

The above definitions of various terms are similarly used in the constituent members of the sanitary napkin 1, the absorbent articles other than the sanitary napkin 1, and the constituent members thereof.

[Sanitary napkin]
As shown in FIG. 1, the sanitary napkin 1 according to an embodiment of the absorbent article of the present invention has a longitudinal direction L and a width direction W that are orthogonal to each other in a plan view, and both end edges of the longitudinal direction L are It has a vertically long shape that protrudes so as to draw an arc toward the outer side in the longitudinal direction L.
Further, as shown in FIG. 1, the sanitary napkin 1 protrudes in the central portion of the longitudinal direction L so that both ends of the width direction W form a substantially trapezoidal shape toward the outer side of the width direction W. , Has a pair of flap portions 12, 12. In the sanitary napkin 1, the portions other than the pair of flap portions 12 and 12 are referred to as the absorption main body portion 11.

The plan view shape of the sanitary napkin 1 is not limited to such a mode, and any shape as long as the length in the longitudinal direction L is longer than the length in the width direction W is arbitrary according to the usage mode and the like. (For example, rectangular, oval, hourglass, etc.) can be adopted.

Further, the shape of the flap portion 12 is not limited to the above-mentioned substantially trapezoidal shape, and an arbitrary shape (for example, a semicircular shape, a semi-elliptical shape, a petal shape, etc.) according to a desired design property or the like can be adopted. .. In the first place, the absorbent article of the present invention is not limited to the sanitary napkin, and therefore, depending on the type and use of the absorbent article, it is not necessary to have such a flap portion.

Further, as shown in FIG. 2, the above-mentioned sanitary napkin 1 has a surface sheet 2 made of a non-woven fabric and a sanitary napkin that form the surface of the sanitary napkin 1 on the skin-facing surface side S1 in the thickness direction T. A back sheet 3 forming the front surface of the non-skin facing surface side S2 of 1 and an absorber 4 located between these sheets are provided as a basic configuration, and further, in the width direction W of the sanitary napkin 1. A pair of side sheets 5 and 5 arranged at both ends and the surface of the non-skin facing surface side S2 of the sanitary napkin 1, more specifically, the non-skin facing surface side S2 of the back sheet 3 in the absorption main body portion 11. A plurality of adhesive portions 8 arranged on the surface and extending in the longitudinal direction L, and flap adhesive portions 91, 92 arranged on the surface of the non-skin facing surface side S2 of the back sheet 3 in each of the pair of flap portions 12 and 12. And, further equipped.

When the sanitary napkin 1 is worn, the absorption main body portion 11 is fixed to the inner surface of the wearer's clothing (for example, underwear) by a plurality of adhesive portions 8, and then the pair of flap portions 12 and 12 are attached. The pair of flap portions 12 and 12 are used because they are folded back to the outside of the garment through the leg openings of the wearer's garment and are adhesively fixed to the outer surface of the wearer's garment by the flap adhesive portions 91 and 92. The surface of the non-skin facing surface side S2 is a surface facing the wearer's skin surface when the sanitary napkin 1 is worn.

Further, as shown in FIG. 1, the absorption main body portion 11 of the sanitary napkin 1 is divided into three regions in the longitudinal direction L. That is, the absorbent body 11 includes a front-side region A ₁ located on the front side of the sanitary napkin 1 in the longitudinal direction L, the rear region A ₃ located on the rear side of the sanitary napkin 1, these regions the excretory opening contact region a ₂ located between, is divided into.

Here, the "excretion port contact area" refers to an area facing or abutting the wearer's excretion port when the wearer wears the absorbent article, and the type of the absorbent article, specifically, Depending on the type of excrement such as urine and feces discharged from the wearer, menstrual blood, age and gender of the wearer, the position and area where the wearer's cloaca faces or abuts, the structure of the absorber, etc. , An area appropriately set for each type of absorbent article.
Such an excretion port contact area is usually set at a substantially central portion in the longitudinal direction L or a position closer to the front side depending on the type of the absorbent article.
For example, when the absorbent article is composed of an absorbing main body portion and a flap portion as in the above-mentioned sanitary napkin 1, the excretion port contact area is a position overlapping the adhesive portion of the pair of flap portions in the width direction W. is set (see the position of the excretory opening contact region a ₂ in FIG. 1), the absorbent article is narrowed toward the inner side in the width direction W at the central portion in the longitudinal direction L, as such light incontinence pad If so, the excretion opening contact area is set at a position that overlaps the constricted portion in the width direction W, and further, if the absorbent article has an oval plan view shape (that is, the absorbent article has an oval shape). The position of the substantially central portion in the longitudinal direction L (that is, the position _{straddling the central axis C W} extending in the width direction W) is set to have neither the pair of flap portions nor the constricted portions).

Since the necessity of the above-mentioned constituent members such as the pair of side sheets and the flap adhesive portion depends on the type and use of the absorbent article, it is essential for the absorbent article of the present invention to be provided with these constituent members. Not a configuration requirement.

Further, the sanitary napkin 1, as shown in FIGS. 1 and 2, in plan view, across the central axis C _L extending in the longitudinal direction L is located on both sides, and a pair of squeeze extending in the longitudinal direction L It has grooves 61 and 62, and a plurality of holes 7 located between the pair of squeezing grooves 61 and 62 in the width direction W.
As shown in FIG. 2, each of the pair of squeezed grooves 61 and 62 has high-density groove bottoms 61B and 62B in which the surface sheet 2 and the absorber 4 are both squeezed from the skin facing surface side S1 in the thickness direction T. Each of the plurality of holes 7 also has a high-density hole bottom 7B in which the surface sheet 2 and the absorber 4 are both squeezed from the skin facing surface side S1 in the thickness direction T. Have.
Then, in the sanitary napkin 1, the positions of the groove bottoms 61B and 62B and the hole bottom 7B in the thickness direction T are viewed in cross section along the width direction W of the sanitary napkin 1 as shown in FIG. It overlaps in the width direction W, and the above-mentioned adhesive portion 8 is arranged so as not to overlap with the squeezing grooves 61 and 62 in the thickness direction T.

As described above, in the sanitary napkin 1, the positions of the high-density groove bottoms 61B and 62B and the hole bottom 7B in the thickness direction T overlap with the width direction W of the sanitary napkin 1 in cross-sectional view, and are relative to each other. Since the groove bottoms 61B and 62B and the hole bottoms 7B having high strength (rigidity) are lined up in the width direction W, high absorption performance is most required, which is on the inner side of the width direction W than the squeezing grooves 61 and 62. In the portion, even if a force is applied from both legs of the wearer in the width direction W of the sanitary napkin 1, it has strength that can withstand the force, and the absorber 4 is less likely to lose its shape. As a result, even if the sanitary napkin 1 is worn for a long time, the excellent absorption performance exhibited by the plurality of holes 7 located on the inner side of the width direction W with respect to the squeezing grooves 61 and 62 is stabilized. Can be demonstrated.

Further, in the sanitary napkin 1, the adhesive portion 8 for fixing clothes is arranged so as not to overlap with the squeezing grooves 61 and 62 in the thickness direction T, so that the functions of the squeezing grooves 61 and 62 are less likely to be impaired. Therefore, it is easy to secure a degree of freedom when the sanitary napkin 1 bends with the squeezing grooves 61 and 62 as the bending base point, and the sanitary napkin 1 easily deforms into a shape that conforms to the wearer's body shape. There is. As a result, the sanitary napkin 1 can exhibit an excellent fit.

Hereinafter, various components and components of the absorbent article of the present invention will be described in more detail using the sanitary napkin 1 and the like of the above-described embodiment.

[Pressure groove]
Sanitary napkin 1, as shown in FIG. 1, a pair of compression groove 61 and 62 located on both sides of the central axis C _L extending in the longitudinal direction L in plan view, and extends in the longitudinal direction L, the longitudinal direction L is located on the front side of and the front side in the width direction compression groove 63 extending in the width direction W so as to straddle the central axis C _L of the pair of compression grooves 61 and 62, the pair of compressed grooves 61 , located on the rear side of the longitudinal direction L of 62, and the width direction compression groove 64 of the rear side which extends in the width direction W so as to straddle the central axis C _L, the outer side of these compressed grooves 61 to 64 It is located and has an outer annular squeezing groove 65 that is located and extends annularly so as to surround these squeezing grooves 61-64.

These squeezing grooves 61 to 65 have a function of easily deforming the sanitary napkin 1 into a shape that conforms to the wearer's body shape as a bending base point, as well as liquid excrement such as menstrual blood and urine discharged from the wearer. It has a function of blocking the flow of the sanitary napkin 1 to prevent it from leaking to the outside of the sanitary napkin 1 and a function of diffusing the liquid excrement flowing into the squeezing groove in the extending direction of the squeezing groove.
In particular, in the pair of squeezing grooves 61 and 62, as described above, the groove bottoms 61B and 62B having relatively high strength (rigidity) are aligned with the hole bottom 7B in the width direction W in a cross-sectional view, so that they are worn. It also has a function of resisting the force applied to the sanitary napkin 1 in the width direction W from both legs of the person and making the absorber 4 difficult to lose its shape.

(A pair of squeezing grooves)
A pair of compression grooves 61 and 62, as shown in FIG. 1, located on both sides of the central axis C _L extending in the longitudinal direction L in plan view, and the rear-side end portion of the front side area A ₁ It extends in the longitudinal direction L from the portion through the excretion port contact region A ₂ and over the portion near the front end portion of the rear side region A _3.
Incidentally, in a pair of compression grooves 61 and 62, one of the compression grooves 61 and the other compression groove 62, the central axis C _L has a plan view shape of line symmetry (bilateral symmetry) as a symmetrical axis, each curve More specifically, as shown in FIG. 1, the center axis C _W extending in the width direction W is centered, and the inside of the width direction W toward each of the front side and the rear side in the longitudinal direction L. It has a curved shape that draws an arc from the side to the outside.

As shown in FIG. 2, the groove bottoms 61B and 62B of the pair of squeezing grooves 61 and 62 have the thickness of the hole bottoms 7B of the plurality of holes 7 whose thickness direction T is the thickness of the plurality of holes 7 in the cross-sectional view. It overlaps the position of the direction T and the width direction W. As a result, the pair of squeezing grooves 61 and 62 having relatively high strength (rigidity) 61B and 62B and the bottoms 7B of the holes of the plurality of holes 7 are lined up in the width direction W, so that the pair of squeezing grooves 61 In the portion on the inner side of the width direction W than 62, even if a force is applied from both legs of the wearer to the width direction W of the sanitary napkin 1, the absorber 4 has a strength that can withstand the force. Is hard to lose its shape.

Further, by having the pair of squeezing grooves 61 and 62 extending in the longitudinal direction L, when the sanitary napkin 1 is worn, each of the pair of squeezing grooves 61 and 62 becomes a bending base point. The region located between the pair of squeezing grooves 61 and 62 (that is, the hole forming region 70 in which the plurality of holes 7 are formed) is the skin while bending so as to form a valley fold when viewed from the skin facing surface side S1. It can be deformed so as to project toward the facing surface side S1. In this way, when the sanitary napkin 1 is deformed so that the cross-sectional shape along the width direction W becomes substantially W-shaped, a hole forming region located between the pair of squeezing grooves 61 and 62 when worn is formed. The 70 is more likely to come into close contact with the crotch portion of the wearer, and the liquid excrement discharged from the wearer can be more accurately flowed into the plurality of holes 7 in the hole forming region 70.

When the sanitary napkin 1 has such a pair of squeezing grooves 61 and 62, the liquid excrement discharged from the wearer flows toward the outer side of the sanitary napkin 1 in the width direction W. Even if the liquid excretion is blocked by the pair of squeezing grooves 61 and 62 extending in the longitudinal direction L in the width direction W, the liquid excrement is allowed to flow along the pair of squeezing grooves 61 and 62 in the longitudinal direction L. It is possible to prevent the leakage of liquid excrement from the widthwise end of the sanitary napkin 1 and to absorb the liquid excrement in a wide range of the longitudinal direction L of the absorber 4. There is also the advantage that it can be made to.

The plan-view shape of each of the pair of squeezing grooves 61 and 62 is not limited to a specific shape in which the above-mentioned curves are combined, and is an arbitrary shape according to desired strength, deformation inducibility, liquid diffusivity, designability, and the like. (For example, a linear shape, a broken line shape, a zigzag shape, a geometric shape, a predetermined design shape, etc.) can be adopted. The pair of squeezing grooves 61 and 62 may extend continuously in the longitudinal direction L or may extend intermittently, respectively.

In the sanitary napkin 1 described above, a pair of compression grooves 61 and 62, as shown in FIG. 1, through the excretory opening contact region A ₂ from the rear end vicinity of the front-side region A ₁ rear Although extending in the longitudinal direction L over the front end portion vicinity of the side area a _3, the pair of compressed grooves 61, 62 is not limited to such embodiments, the longitudinal at least excretory opening contact region a ₂ if extends in the direction L, for example, it is extended only to the excretory opening contact region a _2, extend in the longitudinal direction L from excretory opening contact region a ₂ over the front side area a ₁ or rear region a ₃ You may.

Furthermore, in the sanitary napkin 1 described above, a pair of compression grooves 61 and 62, as shown in FIG. 1, on both sides of the central axis C _L extending in the longitudinal direction L in plan view, one each each are arranged, but the compression grooves extending in the longitudinal direction L may be arranged two by two or more on each side of the central axis C _L extending in the longitudinal direction L.

Then, in the above-mentioned sanitary napkin 1, the pair of squeezing grooves 61 and 62 are formed so as not to overlap with the adhesive portion 8 for fixing clothes in the thickness direction T as shown in FIGS. 1 and 2. .. Here, the fact that the pair of squeezing grooves and the adhesive portion do not overlap in the thickness direction means that the pair of squeezing grooves and the adhesive portion do not substantially overlap in the thickness direction. Therefore, the pair of squeezing grooves and the adhesive portion may slightly overlap in the thickness direction as long as the effects of the present invention are not impaired.
It is preferable that the pair of squeezing grooves and the adhesive portion do not overlap in the thickness direction at least in the excretion port contact region, and further, in the portion of the pair of squeezing grooves that overlaps with the hole portion in the width direction. It is preferable that they do not overlap in the thickness direction.

As described above, when the pair of squeezing grooves 61 and 62 are formed so as not to overlap the adhesive portion 8 for fixing clothes in the thickness direction T, the adhesive portion 8 inhibits the function of the pair of squeezing grooves 61 and 62. Since it is difficult to do so, it becomes easy to secure the degree of freedom when the sanitary napkin 1 bends with the squeezing grooves 61 and 62 as the bending base point.

(Squeezing groove on the non-skin facing surface side)
As shown in FIG. 2, the pair of squeezing grooves 61 and 62 have a structure in which the surface of the skin facing surface side S1 of the sanitary napkin 1 is recessed toward the non-skin facing surface side S2, but is for sanitary use. The napkin 1 overlaps the pair of squeezing grooves 61 and 62 in the thickness direction T, and the surface of the non-skin facing surface side S2 of the sanitary napkin 1 is recessed toward the skin facing surface side S1. It further has squeezing grooves 61'and 62'on the non-skin facing surface side. The pair of non-skin facing surface side pressing grooves 61'and 62'have the same plan-view shape as the pair of pressing grooves 61 and 62 corresponding to the thickness direction T, respectively.

That is, in the sanitary napkin 1, the groove bottoms 61B and 62B of the pair of squeezing grooves 61 and 62 have at least the surface sheet 2 and the absorber 4 having a thickness from the skin facing surface side S1 of the sanitary napkin 1. At the same time as being squeezed in the direction T, at least the absorber 4 is squeezed in the thickness direction T from the non-skin facing surface side S2 of the sanitary napkin 1.
As described above, the groove bottoms 61B and 62B are squeezed not only from the skin facing surface side S1 but also from the non-skin facing surface side S2, so that the groove bottoms 61B and 62B are in a higher density state and the rigidity is increased. Because it is higher, the force applied to the width direction W of the sanitary napkin 1 from both legs of the wearer in the inner part (particularly, the hole forming region 70) in the width direction W than the pair of squeezing grooves 61 and 62. It becomes easier to secure the strength that can withstand.
Further, the sanitary napkin 1 having such a structure has the above-mentioned pair of squeezing grooves 61, 62 and the pair of non-skin facing surface side squeezing grooves 61', 62' as bending base points, and the skin facing surface side S1 and non-skin. Since it is easy to bend on both sides of the facing surface side S2, the degree of freedom of deformation is high, and the shape conforming to the body shape of the wearer is more easily deformed. As a result, the sanitary napkin 1 can exhibit a more excellent fit.

The plan-view shape, dimensions, arrangement form, etc. of the pair of non-skin facing surface side squeezing grooves 61'and 62'are not particularly limited, but are the same as the pair of squeezing grooves 61 and 62 of the corresponding skin facing surface side S1. It is more preferable that the linear shape is wider than the pair of squeezing grooves 61 and 62.

If the above-mentioned sanitary napkin 1 has a pair of squeezing grooves 61 and 62 on the skin facing surface side S1, a pair of non-skin facing surface side squeezing grooves 61'and 62 on the non-skin facing surface side S2. You do not have to have a'.

The means for forming the pair of squeezing grooves 61, 62 and the pair of non-skin facing surface side squeezing grooves 61', 62'are not particularly limited as long as these squeezing grooves can be formed, and for example, the surface sheet 2 and the absorber 4 are formed. Both sides of the surface of the surface sheet 2 on the skin-facing surface side S1 and the surface of the absorber 4 on the non-skin-facing surface side S2 by using an arbitrary pressing means such as heating or non-heating embossing. It can be formed by squeezing in the thickness direction T. As a means for forming such a squeezing groove, for example, a method using a pair of rolls having a predetermined convex portion on the outer peripheral surface, which is disclosed in Japanese Patent Application Laid-Open No. 2019-111091, can be preferably used. ..
When the non-skin facing surface side pressing groove is not formed, one roll of the pair of rolls is a roll having a predetermined convex portion arranged on the outer peripheral surface, and the other roll is a roll having a smooth outer peripheral surface. do it.
The same applies to the means for forming the front and rear width direction squeezing grooves 63 and 64 and the outer annular squeezing groove 65, which will be described later.

(Width squeezing groove)
Located on the front side in the longitudinal direction L of the pair of compressed grooves 61, 62, and the width direction compression groove 63 of the front side extending in the width direction W so as to straddle the central axis C _L extending in the longitudinal direction L, of the pair the longitudinal direction L of the located on the rear side, and the width direction compression groove 64 of the rear side which extends in the width direction W so as to straddle the central axis C _L of the compression groove 61, as shown in FIG. 1, a central one another It has an axisymmetric (vertical symmetry) plan view shape with the axis _{C W} as the axis of symmetry, and is curved so as to draw an arc outward in the longitudinal direction L with the intersection with the _{central axis C L as the apex.} It has a curved shape.

In addition, also in these front side and rear side width direction squeezing grooves 63, 64, each groove bottom portion is the thickness of the hole bottom portion 7B of the plurality of hole portions 7 whose position in the thickness direction T is the thickness in the cross-sectional view. It overlaps the position of the direction T and the longitudinal direction L (not shown). As a result, the groove bottoms of the widthwise squeezing grooves 63 and 64 having relatively high strength (rigidity) and the hole bottoms 7B of the plurality of holes 7 are lined up in the longitudinal direction L, so that the width directions of the front side and the rear side are aligned. In the portion located on the inner side of the longitudinal direction L with respect to the squeezing grooves 63 and 64, even if a force is applied to the longitudinal direction L of the sanitary napkin 1 due to the movement of the wearer or the like, the force is applied. It has sufficient strength to withstand the above, and can make the absorber 4 more difficult to lose its shape.

Further, by having the front side and the rear side width direction squeezing grooves 63 and 64 extending in the width direction W, the sanitary napkin 1 has the width direction squeezing grooves 63 and 64 when worn. each becomes a base point bend, while bent so as to be valley fold when viewed from the skin-facing surface side S1, the front-side region a ₁ located on the outer side of the longitudinal direction L than the width direction compression groove 63, 64 and it can be predetermined portion of the rear side region a ₃ is deformed so as to stand up toward the skin-facing surface side S1. As a result, the sanitary napkin 1 has a region between the widthwise squeezing grooves 63 and 64 on the front side and the rear side, that is, a hole portion in the _{excretion port contact area A 2} (particularly, the excretion port contact area A _2). The formation region 70) can be more accurately brought into close contact with the wearer's body shape.
Further, as the predetermined portion of the front side region A ₁ and the rear region A ₃ located on the outer side of the longitudinal direction L than the width direction compression groove 63, 64 described above are erected toward the skin-facing surface side S1 By deforming, even if the liquid excrement discharged from the wearer flows toward the outer side of the longitudinal direction L of the sanitary napkin 1, the liquid excrement is moved to the width direction W while blocking the flow. It also has the advantage of being able to spread.

The plan-view shape of each of the widthwise squeezing grooves 63 and 64 is not limited to the above-mentioned peculiar curved shape, and is an arbitrary shape (for example, a straight line) according to desired fit, leakage resistance, design, and the like. Shape, broken line shape, zigzag shape, geometric shape, predetermined design shape, etc.) can be adopted.
The width direction squeezing grooves 63 and 64 may extend continuously in the width direction W or may extend intermittently, respectively.

Further, in the above-mentioned sanitary napkin 1, the front and rear width direction squeezing grooves 63 and 64 are in front of the pair of squeezing grooves 61 and 62 in the longitudinal direction L in a plan view as shown in FIG. One is arranged on each of the side and the rear side, but two or more squeezing grooves extending in the width direction W are arranged on each of the front side and the rear side of the pair of squeezing grooves in the longitudinal direction L. It may have been done.

Further, although not particularly each forming position in the width direction compression grooves 63 and 64 limit, preferably it is formed in each front side region A ₁ and the rear region A ₃ as shown in FIG.
In addition, also in the width direction squeezing grooves 63 and 64, like the pair of squeezing grooves 61 and 62 described above, each of the front side and the rear side width direction squeezing grooves 63 and 64 and each of the non-thickness directions T correspond to the thickness direction T. It may or may not have a squeezing groove on the side facing the skin.

(Outer ring squeezing groove)
As shown in FIG. 1, the outer annular squeezing groove 65, which is located on the outer side of the various squeezing grooves 61 to 64 and extends in a ring shape so as to surround these squeezing grooves 61 to 64, has a central axis _CL. It has a line-symmetrical (left-right symmetry) shape with the axis of symmetry as the axis of symmetry and a line-symmetrical (vertical symmetry) shape with the _{central axis CW as the axis of symmetry.} extending from the front area a ₁ to the rear side region a ₃ Te, have a linear shape substantially waveform at the site extending in the longitudinal direction L about the excretory opening contact region a _2, like unique oval Has the shape of.

Further, also in the outer annular pressing groove 65, the bottom portion thereof, that is, the annular pressing groove bottom portion 65B has a pair of pressing grooves 61 and 62 in the thickness direction T in a cross-sectional view as shown in FIG. The positions of the groove bottoms 61B and 62B and the hole bottoms 7B of the plurality of holes 7 in the thickness direction T overlap with each other in the width direction W.
As a result, the groove bottoms 61B, 62B, 65B of the relatively high strength (rigidity) squeezing grooves 61, 62, 65 and the hole bottoms 7B of the plurality of holes 7 are lined up in the width direction W, so that each squeezing is performed. In the inner portion of the groove 61, 62, 65 in the width direction W, particularly in the hole forming region 70, even if a force is applied to the width direction W of the sanitary napkin 1 from both legs of the wearer, the force is applied. On the other hand, it has a strength that can withstand it more reliably, and the absorber 4 is more difficult to lose its shape.

Since the annular squeezing groove bottom portion 65B has the same position in the thickness direction T over the entire circumference of the outer annular squeezing groove 65, the annular squeezing groove bottom portion 65B has a plurality of positions T in the thickness direction. The position of the bottom portion 7B of the hole portion 7 in the thickness direction T and the position in the longitudinal direction L also overlap, and it is easier to secure the strength of the sanitary napkin 1 in the longitudinal direction L.

Further, by having such an outer annular pressing groove 65, in the sanitary napkin 1, the liquid excrement discharged from the wearer is outside the longitudinal direction L and the width direction W of the sanitary napkin 1. Even if it flows toward the direction, the liquid excrement can be diffused along the outer annular squeezing groove 65 while blocking the flow of the liquid excrement by the outer annular squeezing groove 65. In addition to making it difficult for liquid excrement to leak, there is also an advantage that the liquid excrement can be absorbed in a wide range of the absorber 4.

The plan-view shape of the outer annular squeezing groove 65 is not limited to the above-mentioned peculiar oval shape, but is an arbitrary shape (for example, an elliptical shape, etc.) according to desired strength, liquid diffusivity, design, and the like. Polygonal shape, predetermined design shape, etc.) can be adopted.
The outer annular pressing groove 65 may extend in an annular shape by a continuous line or may extend in an annular shape by an intermittent line.

Further, in the above-mentioned sanitary napkin 1, the outer annular squeezing groove 65 is formed in an annular shape by a single line as shown in FIG. The side annular squeezing groove 65 may be formed by two or more lines in a double or more annular mode.

Further, as shown in FIG. 2, the outer annular pressing groove 65 has a structure in which the surface of the skin facing surface side S1 of the sanitary napkin 1 is recessed toward the non-skin facing surface side S2. The sanitary napkin 1 overlaps the outer annular pressing groove 65 in the thickness direction T, and the surface of the non-skin facing surface side S2 of the sanitary napkin 1 is recessed toward the skin facing surface side S1. It further has an annular squeezing groove 65'on the non-skin facing surface side. The non-skin facing surface side annular squeezing groove 65'has the same plan view shape as the outer side annular squeezing groove 65 corresponding to the thickness direction T.

That is, in the sanitary napkin 1, at least the surface sheet 2 and the absorber 4 are on the skin-facing surface side of the sanitary napkin 1 at the groove bottom portion of the outer annular pressing groove 65 (that is, the annular pressing groove bottom portion 65B). At the same time that the absorber 4 is squeezed in the thickness direction T from S1, at least the absorber 4 is squeezed in the thickness direction T from the non-skin facing surface side S2 of the sanitary napkin 1.
As described above, the annular squeezing groove bottom 65B is squeezed not only from the skin facing surface side S1 but also from the non-skin facing surface side S2, so that the annular squeezing groove bottom 65B has a higher density and rigidity. Since the height is increased, it becomes easier to further secure the strength of the inner side portion (particularly, the hole forming region 70) of the outer side annular pressing groove 65.

The plan-view shape, dimensions, arrangement form, etc. of the non-skin facing surface side annular pressing groove 65'are not particularly limited, but may be the same as the outer side annular pressing groove 65 of the corresponding skin facing surface side S1. It is preferable that the linear shape is wider than the outer annular pressing groove 65.

If the sanitary napkin 1 described above has the outer annular pressing groove 65 on the skin facing surface side S1, it does not have to have such a non-skin facing surface side annular pressing groove 65'. Good.
In the first place, in the absorbent article of the present invention, it is not an indispensable constituent requirement to have the widthwise squeezing groove on the front side and the rear side and the annular squeezing groove on the outer side as described above. Depending on the case, it is not necessary to have such front and rear width direction squeezing grooves and outer annular squeezing grooves.

[Hole]
As shown in FIG. 1, the plurality of holes 7 in the sanitary napkin 1 are arranged at the positions of the central portions of the sanitary napkin 1 in the longitudinal direction L and the width direction W in a plan view. The region in which the plurality of holes 7 are formed is referred to as a hole forming region 70.
As shown in FIG. 1, the hole forming region 70 passes through the longitudinal outer edge of the hole located at each of the frontmost side and the rearmost side in the longitudinal direction L, and extends in the width direction W. Two imaginary lines; two imaginary lines extending in the longitudinal direction L through the outer edge in the width direction of the holes located on the one-side end side and the other-side end side in the width direction W, respectively. Refers to a rectangular area surrounded by virtual lines and;

Hole forming region 70 in the sanitary napkin 1, as shown in FIG. 1, it overlaps with the excretory opening contact region A ₂ in plan view. The arrangement position of the hole forming region 70 is not limited to such a position, but when the hole forming region 70 _{overlaps with the excretion port contact area A 2} , the liquid excrement discharged from the wearer is more efficient. It can often flow into a plurality of holes 7.

Each of the plurality of holes 7 includes an opening formed on the surface of the skin facing surface side S1 of the surface sheet 2, a peripheral wall portion extending from the opening to the non-skin facing surface side S2, and the peripheral wall portion. It is composed of a relatively high-density hole bottom 7B connected to the non-skin facing surface side S2, and liquid excrement that has flowed into the hole 7 is passed through the peripheral wall and the hole bottom 7B. It can be quickly transferred into the absorber 4.
By having such a plurality of holes 7, the sanitary napkin 1 can exhibit excellent absorption performance.

As shown in FIG. 2, the bottoms 7B of the holes 7 of the plurality of holes 7 have the thicknesses of the bottoms 61B and 62B of the pair of squeezing grooves 61 and 62 whose thickness direction T is located in the cross-sectional view as shown in FIG. It overlaps the position in the longitudinal direction T and the position in the width direction W. As a result, the hole bottoms 7B of the plurality of holes 7 having relatively high strength (rigidity) and the groove bottoms 61B and 62B of the pair of squeezing grooves 61 and 62 are lined up in the width direction W, so that the pair of squeezing grooves 61 , 62 In the inner part of the width direction W (particularly, the hole forming region 70), even if a force is applied from both legs of the wearer to the width direction W of the sanitary napkin 1, the force is resisted. It has the strength to be obtained, and the absorber 4 is less likely to lose its shape.
Therefore, the sanitary napkin 1 can stably exhibit the excellent absorption performance exhibited by the above-mentioned plurality of holes 7 even when worn for a long time.

Further, in the sanitary napkin 1, the position of the hole bottom 7B in the thickness direction T (that is, from the surface position of the surface sheet 2 on the skin facing surface side S1 to the surface position of the hole bottom 7B on the skin facing surface side S1). , The depth of the hole 7 in the thickness direction T, hereinafter may be simply referred to as “the depth of the hole 7”) is the total thickness of the portion where the hole 7 is formed. When (that is, the thickness of the portion where the front surface sheet 2, the absorber 4 and the back surface sheet 3 are laminated) is 100%, the depth is, for example, 30% or more, preferably in the range of 40% to 60%. The depth is within, more preferably within the range of 40% to 60%.
The thickness of the bottom portion 7B of the hole is not particularly limited, but is, for example, a thickness in the range of 0.001 mm to 0.5 mm, preferably a thickness in the range of 0.05 mm to 0.1 mm.

Further, in the above-mentioned sanitary napkin 1, the plurality of holes 7 are arranged in a staggered pattern (staggered arrangement) so that the holes 7 are not adjacent to each other in the longitudinal direction L and the width direction W as shown in FIG. However, in the present invention, the arrangement form of the plurality of holes is not particularly limited, and for example, the plurality of holes are arranged in a grid pattern evenly arranged in each of the longitudinal direction and the width direction, or a predetermined arrangement as a whole. It can be arranged in any form such as an arrangement form that forms a figure or the like (for example, a circle, a heart shape, etc.), a random (irregular) arrangement form, or the like.

Further, the size of each opening of the plurality of holes (that is, the diameter of the inscribed circle of the plan view shape of the opening) is not particularly limited as long as the effect of the present invention is not impaired, and is, for example, 0.1 mm to 5 A size in the range of 0.0 mm can be adopted, preferably a size in the range of 0.5 mm to 2.0 mm.
The plurality of holes may have the same or different size of the opening and the size of the bottom of the hole (that is, the diameter of the inscribed circle in the plan view shape of the bottom of the hole). For example, if the size of the opening is larger than the size of the bottom of the hole, liquid excrement tends to flow down into the hole, and if the size of the opening is smaller than the size of the bottom of the hole, the liquid that has flowed down into the hole. There is an advantage that excrement is less likely to return to the side facing the skin.

Further, the arrangement interval of the plurality of holes (that is, the distance between the centers of the adjacent holes) is not particularly limited, and for example, an arrangement interval within the range of 10 mm to 30 mm can be adopted. When the arrangement interval of the plurality of holes is 30 mm or less, the liquid excrement discharged from the wearer easily flows down into the holes, and the liquid excrement can be transferred to the absorber more quickly. On the other hand, when the arrangement interval of the plurality of holes is 10 mm or more, it is possible to make it difficult for the wearer to feel anxiety due to the excessive number of holes.

Further, in the above-mentioned sanitary napkin 1, each of the plurality of holes 7 has a circular shape in a plan view of the openings as shown in FIG. 1, but in the present invention, the openings of the holes are formed. The plan view shape of the above is not particularly limited, and any shape such as a circle, an ellipse, a polygon having a triangle or more, a star shape, or a heart shape can be adopted. If the shape of the opening of the hole has a design such as a star shape or a heart shape, psychology such as making it difficult to cause anxiety due to the formation of a plurality of holes in the absorbent article. Can exert a positive effect.

Further, in the present invention, an arbitrary functional agent such as a blood low viscosity agent or a hydrophilic oil agent may be contained in the inner surface of the pore portion. For example, if a blood hypoviscosity agent or a hydrophilic oil agent is applied to the inner surface of the pore, the liquid excrement discharged from the wearer easily flows down into the pore, and the liquid excrement is transferred to the absorber more quickly. Can be made to.

(Non-skin facing surface side hole)
In the sanitary napkin 1 described above, as shown in FIG. 2, the plurality of holes 7 have a structure in which the surface of the sanitary napkin 1 on the skin-facing surface side S1 is recessed toward the non-skin-facing surface side S2. However, the sanitary napkin 1 overlaps with each of the plurality of holes 7 in the thickness direction T, and the surface of the sanitary napkin 1 on the non-skin facing surface side S2 faces the skin facing surface side S1. It further has a plurality of non-skin facing surface side holes 7'that are recessed.

That is, in the sanitary napkin 1, at least the surface sheet 2 and the absorber 4 of the respective hole bottoms 7B of the plurality of holes 7 are in the thickness direction T from the skin facing surface side S1 of the sanitary napkin 1. At the same time as being squeezed, at least the absorber 4 is squeezed in the thickness direction T from the non-skin facing surface side S2 of the sanitary napkin 1.
As described above, the hole bottom 7B is squeezed not only from the skin facing surface side S1 but also from the non-skin facing surface side S2, so that the hole bottom 7B becomes denser and has higher rigidity. Therefore, it becomes easier to maintain the shape of the hole portion 7, and it becomes easier to further secure the strength capable of resisting the force applied to the sanitary napkin 1 in the width direction W from both legs of the wearer in the hole portion forming region 70. As a result, the sanitary napkin 1 is less likely to lose its shape in the absorber 4, and as a result, the desired absorption performance can be exhibited more stably.

The plan view shape, dimensions, arrangement form, etc. of the non-skin facing surface side hole 7'are not particularly limited, and the same hole 7 as the corresponding skin facing surface side S1 can be adopted, but the non-skin facing surface side hole 7'is non-skin. The facing surface side hole portion 7'preferably has a shape in which the plan view area of the opening portion is larger than that of the hole portion 7, and in particular, as the hole portion bottom portion 7B is directed toward the opening portion on the non-skin facing surface side S2, the opening portion is not. It is preferable that the peripheral wall portion of the skin facing surface side hole portion 7'is curved and expanded in an arc. When the non-skin facing surface side hole 7'is formed in this way, even if the wearer's body pressure is applied to the thickness direction T of the sanitary napkin 1, the non-skin facing side hole 7'is formed. By deforming so as to bend in the thickness direction T, the body pressure can be buffered, so that there is an advantage that the shape of the hole portion 7 on the skin facing surface side S1 can be more easily maintained.

Further, the depth of the non-skin facing surface side hole 7'(that is, from the surface position of the non-skin facing surface side S2 of the absorber 4 to the surface position of the non-skin facing surface side S2 of the hole bottom 7B) is non-skin. The depth of the facing surface side hole portion 7'in the thickness direction T) is the same as the depth of the hole portion 7 described above.

The above-mentioned sanitary napkin 1 does not have to have such a plurality of non-skin facing surface side holes 7'as long as it has a plurality of holes 7 on the skin facing surface side S1. ..

The means for forming the plurality of holes 7 and the non-skin facing surface side holes 7'is not particularly limited as long as these holes can be formed. Squeeze in the thickness direction T from both the surface of the surface sheet 2 on the skin-facing surface side S1 and the surface of the absorber 4 on the non-skin-facing surface S2 using any pressing means such as heating or non-heating embossing. It can be formed by doing. As a means for forming such a hole, for example, a method using a pair of rolls having a plurality of predetermined pins on the outer peripheral surface, which is disclosed in Japanese Patent Application Laid-Open No. 2019-111091, may be preferably used. it can.
When the non-skin facing surface side hole is not formed, one of the pair of rolls is a roll in which a plurality of predetermined pins are arranged on the outer peripheral surface, and the other roll is a roll having a smooth outer peripheral surface. And it is sufficient.
Further, the plurality of holes and the above-mentioned squeezing groove may be formed in the same step or may be formed in different steps.

[Adhesive part]
In the sanitary napkin 1, the plurality of adhesive portions 8 for adhesively fixing the absorption main body portion 11 to the inner surface of the wearer's clothing are, as shown in FIG. 1, the surface of the non-skin facing surface side S2 of the sanitary napkin 1. More specifically, six stripes extending continuously in the longitudinal direction L and arranged at predetermined intervals in the width direction W on the surface of the back surface sheet 3 on the non-skin facing surface side S2 of the absorption main body portion 11. It is arranged in the form of a shape.

The arrangement form of the plurality of adhesive portions 8 is not particularly limited as long as the effects of the present invention are not impaired, and the plurality of adhesive portions 8 are placed on the surface of the back surface sheet 3 on the non-skin facing surface side S2 of the absorption main body portion 11, for example. , One or more than one in the longitudinal direction L can be arranged in any linear form such as a linear shape, a curved shape, and a zigzag shape.
Further, the plurality of adhesive portions 8 may extend continuously in the longitudinal direction L as described above, or may extend intermittently.
The plan view shape, various dimensions, basis weight, etc. of the adhesive portion 8 are arbitrary shapes, various dimensions, basis weight, etc. in consideration of the ease of fixing to the wearer's clothing, as long as the effects of the present invention are not impaired. The amount etc. can be adopted.

As described above, in the sanitary napkin 1, since the plurality of adhesive portions 8 for fixing clothes are arranged so as not to overlap with the squeezing grooves 61 and 62 in the thickness direction T, the functions of the squeezing grooves 61 and 62 are impaired. It is difficult, and it is easy to secure the degree of freedom when the sanitary napkin 1 bends with the squeezing grooves 61 and 62 as the bending base point. As a result, the sanitary napkin 1 is easily deformed into a shape that conforms to the body shape of the wearer, and can exhibit excellent fit.

The plurality of adhesive portions 8 is preferably not overlap at least in the excretory opening contact region A ₂ to the pair of compression grooves 61 and 62 and the thickness direction T, further the pair of compressed grooves 61, 62 It is more preferable that the hole portion 7 and the portion overlapping in the width direction W do not overlap in the thickness direction T.

Further, in the above-mentioned sanitary napkin 1, at least a part of the plurality of adhesive portions 8 is a portion between the pair of squeezing grooves 61 and 62 and the hole portion 7, and the thickness direction, as shown in FIG. It is arranged so as to correspond to T.
When at least a part of the plurality of adhesive portions 8 is arranged in this way, the portion between the pressing grooves 61 and 62 and the hole portion 7 is adhesively fixed to the wearer's clothing when the sanitary napkin 1 is worn. Therefore, the misalignment of the groove bottoms 61B and 62B and the hole bottom 7B in the thickness direction T is less likely to occur. That is, it becomes easy to maintain a state in which the groove bottoms 61B and 62B and the hole bottom 7B are aligned in the width direction W in a cross-sectional view.
As a result, the sanitary napkin 1 has a strength capable of resisting the force applied to the sanitary napkin 1 from both legs of the wearer in the width direction W in the portion on the inner side of the pair of squeezing grooves 61 and 62 in the width direction W. Since it becomes easier to secure the above, the shape of the absorber 4 is less likely to be lost, and as a result, the desired absorption performance can be exhibited more stably.

Further, in the above-mentioned sanitary napkin 1, at least a part of the plurality of adhesive portions 8 straddles between two or more adjacent holes 7 in a plan view and the thickness direction T, as shown in FIG. It is arranged so as to correspond to.
When at least a part of the plurality of adhesive portions 8 is arranged in this way, when the sanitary napkin 1 is worn, the corresponding portion between the plurality of holes 7 is adhesively fixed to the wearer's clothing. In the plurality of holes 7, the position shift of the hole bottom 7B in the thickness direction T is less likely to occur. That is, it becomes easy to maintain a state in which the plurality of hole bottom portions 7B are aligned in the width direction W in a cross-sectional view.
As a result, the sanitary napkin 1 can further secure the strength capable of resisting the force applied to the width direction W of the sanitary napkin 1 from both legs of the wearer in the hole forming region 70. Collapse is less likely to occur, and as a result, the desired absorption performance can be exhibited more stably.

As the pressure-sensitive adhesive used for such a pressure-sensitive adhesive portion 8, any pressure-sensitive adhesive known in the art can be adopted, for example, styrene-ethylene-butadiene-styrene (SEBS), styrene-butadiene-styrene (SBS). ), A pressure-sensitive pressure-sensitive adhesive mainly composed of a styrene-based copolymer such as styrene-isoprene-styrene (SIS) can be used.
The same applies to the flap adhesive portions 91 and 92 arranged in each of the pair of flap portions 12 and 12.

[Surface sheet]
In the sanitary napkin 1, as shown in FIG. 1, the surface sheet 2 extends in the longitudinal direction L from the longitudinal end on the front side to the longitudinal end on the rear side of the sanitary napkin 1 in a plan view. It has a vertically long shape. Further, as shown in FIG. 2, the surface sheet 2 is arranged at the position of the skin facing surface side S1 in the thickness direction T of the sanitary napkin 1, and is a contact surface that can come into contact with the wearer's skin, that is, for sanitary use. It is composed of a liquid-permeable sheet-like member that forms the surface of the skin-facing surface side S1 of the napkin 1.

Further, as shown in FIGS. 1 and 2, the surface sheet 2 has a size slightly larger in the longitudinal direction L and the width direction W than the absorber 4 located on the non-skin facing surface side S2 of the surface sheet 2. A pair of side sheets 5 and 5 are joined to the surface of the skin-facing surface side S1 at both ends in the width direction W.

The liquid-permeable sheet-like member that can be used as the surface sheet 2 is particularly limited as long as it has various properties that can be used as the surface sheet of a sanitary napkin (for example, liquid permeability, touch, flexibility, strength, etc.). Instead, for example, non-woven fabrics such as air-through non-woven fabrics, spunlace non-woven fabrics, spunbonded non-woven fabrics, and point-bonded non-woven fabrics, and arbitrary liquid-permeable sheet-like members such as porous resin films can be used.

When a non-woven fabric is used as the surface sheet, the non-woven fabric may have a single-layer structure or a multi-layer structure of two or more layers. The type of constituent fibers of the non-woven fabric is not particularly limited, and examples thereof include hydrophilic fibers such as cellulosic fibers and thermoplastic resin fibers subjected to a hydrophilization treatment. These fibers may be used alone or in combination of two or more kinds of fibers.
Further, the fineness of these fibers is not particularly limited, and for example, a fineness in the range of 1.5 dtex to 5.5 dtex can be adopted.

Further, examples of the cellulosic fibers that can be used as the constituent fibers of the non-woven fabric include natural cellulose fibers (for example, plant fibers such as cotton), regenerated cellulose fibers, purified cellulose fibers, and semi-synthetic cellulose fibers.
Examples of the thermoplastic resin fibers that can be used as the constituent fibers of the non-woven fabric include olefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET), and polyamides such as 6-nylon. Examples thereof include fibers made of known thermoplastic resins such as based resins. These resins may be used alone or in combination of two or more kinds of resins.

When the surface sheet 2 is made of a non-woven fabric containing such thermoplastic resin fibers, at least a part of the thermoplastic resin fibers in the non-woven fabric is melted when the above-mentioned plurality of pores 7 are formed by pressing. Therefore, the surface (that is, the inner surface of the pores 7) of each of the plurality of pores 7 formed after pressing is at least partially covered with the melt formed by solidifying the molten thermoplastic resin fibers. It will be. As a result, each of the plurality of hole portions 7 has high rigidity, and it becomes easy to maintain the shape of the hole portion 7, so that the function of the hole portion 7 can be exhibited more stably.
Further, since the above-mentioned melt of the thermoplastic resin fiber is also present in the hole bottom 7B, the hole bottom 7B has high rigidity, and in the hole forming region 70, the sanitary napkin 1 is applied from both legs of the wearer. There is also an advantage that it is easy to secure a strength that can withstand the force applied to the width direction W.

The form of the thermoplastic resin fiber is not particularly limited, and for example, a core-sheath type composite fiber such as PET (core) / PE (sheath) or PP (core) / PE (sheath), side-by-side. -Composite fibers such as side-type composite fibers and sea-island-type composite fibers; hollow fibers with a hollow internal structure; irregular cross-sectional fibers such as flat, Y-shaped, and C-shaped; three-dimensional crimped fibers with latent or overt crimps; Examples thereof include split fibers that are divided by a physical load such as water flow, heat, and embossing. These fibers may be used alone or in combination of two or more kinds of fibers.

Further, the above-mentioned thermoplastic resin fiber may contain a filler such as titanium oxide, calcium carbonate or barium sulfate in a proportion of, for example, 0.3% by mass to 5% by mass. By including such a filler, the concealing property of the surface sheet can be improved.

The structure of the liquid-permeable sheet-like member used as the surface sheet 2 is not particularly limited as long as it has a structure corresponding to the pair of squeezing grooves 61, 62 and the plurality of holes 7 described above, and is not particularly limited as a whole. Even if it has a flat sheet-like structure, it may have a concavo-convex structure having a plurality of convex portions and concave portions (for example, a concavo-convex structure having a corrugated cross-sectional shape, a ridged groove structure, or the like). When the liquid-permeable sheet-like member has such a concavo-convex structure, each of the plurality of convex portions in the concavo-convex structure has a hollow internal structure even if it has a solid internal structure. May be.

Further, the surface sheet 2 preferably has a strength at 10% elongation in the width direction W of 0.1N to 1.3N, more preferably 0.2N to 0.9N. When the surface sheet has a predetermined elongation property in the width direction, there is an advantage that a predetermined bulkiness and cushioning property can be ensured between the holes of the plurality of holes.
That is, the surface sheet 2 used for the sanitary napkin 1 having a plurality of holes 7 as described above has pins for forming the plurality of holes 7 in the thickness direction from the skin facing surface side in the manufacturing process. When penetrating toward the pin, the part between the pins (that is, the part between the holes of the plurality of holes) is also pushed toward the inside of the absorber 4, and the absorber 4 is excessively compressed. However, if the surface sheet 2 has the predetermined stretching characteristics as described above, the surface sheet 2 can be stretched following the penetration of the pin, so that the surface sheet 2 can be stretched between the pins. The absorber 4 is less likely to be excessively compressed in the portion. As a result, it is possible to secure a predetermined bulkiness and cushioning property between the holes of the plurality of holes described above.

The strength of the surface sheet at 10% elongation can be measured by the following method.
First, the surface sheet to be measured is cut into a width of 20 mm to obtain a sample for measurement.
The obtained measurement sample is sandwiched between the chucks of a tensile tester (manufactured by Instron, 5965 model) along the width direction W. The distance between the chucks at this time can be appropriately adjusted according to the length of the measurement sample (that is, the length in the width direction W), but is set to 50 mm as a guide.
Then, a tensile test is carried out under the condition of a tensile speed of 100 mm / min, and the tensile load at the time of 10% elongation is measured. The tensile load thus obtained is defined as the strength at 10% elongation.

Examples of the surface sheet having such elongation characteristics are air-through non-woven fabrics, particularly core-sheath type composite fibers having an eccentric structure in which the core is made of polyester and the sheath is made of polyethylene, and the fineness is 2.2 dtex to 3. the heat-adhesive sheath-core conjugate fiber ^.3Dtex, or air-through non-woven fabric obtained by hot-air treatment at a basis weight of ^{25g / m 2 ~35g / m 2} , fine uneven structure (for example, irregularities in cross-section a waveform Examples include non-woven fabrics having a structure, etc.).

Further, an arbitrary agent such as a plant-derived extract or a skin care agent may be applied to the surface of the surface sheet 2 on the skin-facing surface side S1.

The plan view shape, various dimensions, basis weight, etc. of the surface sheet 2 are not particularly limited as long as they can be used as the surface sheet of a sanitary napkin, and the desired liquid permeability, touch, flexibility, strength, etc. can be obtained. Any shape, various dimensions, basis weight, etc. can be adopted according to the situation. For example, the thickness of the surface sheet has a thickness in the range of 0.1 mm to 3.0 mm, The basis weight of the topsheet ^is the basis weight in the range of 10g / ^{m 2} ~50g / m 2 is there.

In the above-mentioned sanitary napkin 1, the surface sheet 2 is bonded to the absorber 4 by an arbitrary adhesive such as a hot melt type adhesive, but the absorbent article of the present invention has such an embodiment. Not limited to, for example, an intermediate sheet having a predetermined liquid diffusivity and liquid permeability between the surface sheet 2 and the absorber 4, such as the sanitary napkin 1 according to another embodiment of the present invention shown in FIG. 13 may be provided.

[Intermediate sheet]
In the sanitary napkin 1 according to another embodiment of the present invention shown in FIG. 3, the intermediate sheet 13 extends in the longitudinal direction L from the longitudinal end on the front side to the longitudinal end on the rear side of the sanitary napkin 1. It has a peculiar vertically long plan view shape that is present and has a length in the width direction smaller than that of the surface sheet 2.
As shown in FIG. 3, the intermediate sheet 13 is arranged between the surface sheet 2 and the absorber 4 in the thickness direction T of the sanitary napkin 1, and is used for menstrual blood, urine, etc. that have permeated the surface sheet 2. It is composed of a sheet-like member having predetermined liquid diffusivity and liquid permeability that causes liquid excrement to be transferred to the absorber 4 on the non-skin facing surface side S2 while diffusing in the surface direction.
The intermediate sheet 13 is bonded to the surface sheet 2 on the skin-facing surface side S1 and the absorber 4 on the non-skin-facing surface side S2, respectively, with an arbitrary adhesive such as a hot melt type adhesive.

Since the sanitary napkin 1 shown in FIG. 3 includes an intermediate sheet 13 between the surface sheet 2 and the absorber 4, liquid excrement supplied between the plurality of holes 7 and permeated through the surface sheet 2. The liquid excrement that diffuses the substance along the surface direction of the intermediate sheet 13 or flows into the hole 7 and reaches the intermediate sheet 13 through the peripheral wall of the hole 7 is discharged from the intermediate sheet 13. It can be diffused along the plane direction. As a result, the sanitary napkin 1 shown in FIG. 3 can evenly absorb the liquid excrement into a wider area of the absorber 4. The intermediate sheet 13 also has a function (that is, a concealing function) of obscuring liquid excrement such as menstrual blood and urine absorbed by the absorber 4 from the surface sheet 2 side.

The sheet-like member that can be used as the intermediate sheet 13 is not particularly limited as long as it has at least a predetermined liquid permeability, and for example, a liquid-permeable sheet-like member similar to the surface sheet (for example, an air-through non-woven fabric) or the like. , Known non-woven fabrics and woven fabrics having both liquid diffusivity and liquid permeability, composite sheets in which these are laminated, and the like can be used, but those having both liquid diffusivity and liquid permeability as described above. Is preferable.
The intermediate sheet does not need to be arranged separately from the surface sheet. For example, the surface sheet may be folded in half and the portion located on the non-skin facing surface side thereof may be used as the intermediate sheet.

When a non-woven fabric is used as the intermediate sheet, the non-woven fabric may have a single-layer structure or a multi-layer structure of two or more layers. The type of constituent fibers of such a non-woven fabric is not particularly limited, and examples thereof include hydrophilic fibers such as cellulosic fibers and thermoplastic resin fibers subjected to a hydrophilic treatment. These fibers may be used alone or in combination of two or more kinds of fibers. The cellulosic fibers and thermoplastic resin fibers that can be used as the constituent fibers of the non-woven fabric are the same as the non-woven fabric that can form the above-mentioned surface sheet.

In the sanitary napkin 1 shown in FIG. 3 described above, the intermediate sheet 13 arranged between the surface sheet 2 and the absorber 4 is made of a non-woven fabric containing thermoplastic resin fibers.
As described above, when the intermediate sheet 13 arranged between the surface sheet 2 and the absorber 4 is made of a non-woven fabric containing a thermoplastic resin fiber, when the above-mentioned plurality of holes 7 are formed by pressing, the intermediate sheet 13 is formed. Since at least a part of the thermoplastic resin fibers in the non-woven fabric constituting the intermediate sheet 13 is melted, each of the plurality of pores 7 formed after pressing is formed by the melt formed by solidifying the molten thermoplastic resin fibers. , The constituent fibers near the inner surface of the hole 7 are bonded to each other and at least partially reinforced. As a result, each of the plurality of hole portions 7 has high rigidity, and it becomes easy to maintain the shape of the hole portion 7, so that the function of the hole portion 7 can be exhibited more stably.
Further, since the above-mentioned melt of the thermoplastic resin fiber is also present in the hole bottom 7B, the hole bottom 7B has high rigidity, and in the hole forming region 70, the wearer's legs are sanitary. There is also an advantage that it is easy to secure a strength that can withstand the force applied to the width direction W of the napkin 1.

The plan-view shape, various dimensions, basis weight, etc. of the intermediate sheet 13 are not particularly limited as long as they have predetermined liquid diffusivity and liquid permeability, and are arbitrary according to desired absorption performance, flexibility, and the like. Shape, various dimensions, basis weight, etc. can be adopted.

[Back sheet]
In the sanitary napkin 1 according to the embodiment of the present invention shown in FIG. 1, the back surface sheet 3 is in the longitudinal direction from the front longitudinal end portion of the sanitary napkin 1 to the rear longitudinal end portion in a plan view. In addition to extending to L, the sanitary napkin 1 has a vertically long shape extending in the width direction W from one side width direction end portion to the other side width direction end portion in the width direction W.
Further, as shown in FIG. 2, the back sheet 3 is arranged at the position of the non-skin facing surface side S2 in the thickness direction T of the sanitary napkin 1, and is used for menstrual blood, urine, etc. that have permeated the absorber 4. It is composed of a liquid-impermeable sheet-like member that prevents liquid excrement from leaking to the outside of the sanitary napkin 1.

The liquid-impermeable sheet-like member that can be used as the back sheet 3 is not particularly limited as long as it can prevent the permeation of liquid excrement such as menstrual blood and urine discharged from the wearer, and is, for example, hydrophobic. Hydrophobic resin fibers (for example, various composite fibers such as polyolefin resin fibers, polyester resin fibers, core-sheath type composite fibers, etc.); A known liquid-impermeable sheet-like member such as a formed perforated or non-perforated resin film; a laminated body in which a non-woven fabric is bonded to the resin film; a laminated non-woven fabric such as an SMS non-woven fabric can be adopted.

The plan-view shape, various dimensions, basis weight, etc. of the back sheet 3 are not particularly limited as long as they can be used as the back sheet of a sanitary napkin, and can be adjusted according to desired leakage-proof performance, breathability, strength, and the like. Any shape, various dimensions, basis weight, etc. can be adopted.

[Absorber]
Absorbent body 4 in the sanitary napkin 1 described above, as shown in FIG. 1, about the excretory opening contact region A ₂ of the sanitary napkin 1 in plan view, the rear side region A from the front area A _{1 It} has a vertically long shape that extends over a wide area of the longitudinal direction L over 3 and extends over a wide area that occupies most of the total width in the width direction W as well. Further, as shown in FIG. 1, the absorber 4 projects so that both the front side and the rear side end portions in the longitudinal direction form an arc toward the outer side in the longitudinal direction L, respectively, in a plan view. , Has a peculiar vertically long shape.

Further, as shown in FIG. 2, the absorber 4 is arranged between the front surface sheet 2 and the back surface sheet 3 in the thickness direction T of the sanitary napkin 1, and menstrual blood, urine, etc. that have permeated the front surface sheet 2 and the like. It is formed by a predetermined water-absorbing member capable of absorbing and retaining the liquid excrement of.
The absorber 4 is bonded to the front surface sheet 2 on the skin facing surface side S1 and the back surface sheet 3 on the non-skin facing surface side S2, respectively, with an arbitrary adhesive such as a hot melt type adhesive.

The water-absorbent member that can be used as the absorber 4 is not particularly limited as long as it can absorb and retain at least liquid excrement such as menstrual blood and urine, and a water-absorbent member known in the art can be adopted. it can. Examples of such a water-absorbent member include those in which at least one absorbent core made of a predetermined water-absorbent material is covered with a core wrap sheet such as a hydrophilic tissue.
Here, examples of the water-absorbent material constituting the absorbent core include hydrophilic fibers and highly absorbent polymers, and more specifically, cellulosic fibers such as crushed pulp, cotton, rayon, and acetate; acrylic. Granules made of a highly absorbent polymer such as a sodium acid copolymer; a mixture of any combination of these can be mentioned.
In the above-mentioned sanitary napkin 1, the absorber 4 is composed of an absorbent core made of a water-absorbent material and a core wrap sheet covering the absorbent core.

Further, the absorber 4 may contain synthetic fibers such as thermoplastic resin fibers as long as the absorption performance is not impaired. When the absorber 4 contains such synthetic fibers, the strength of the absorber 4 is increased by constructing the fiber network structure by the synthetic fibers, so that the body pressure of the wearer is applied to the absorber 4. Even so, the above-mentioned plurality of holes 7 and the like are less likely to be crushed.

In the sanitary napkin 1 described above, the absorber 4 is curved so that the portion between the adjacent holes 7 and 7 bulges toward the skin facing surface side S1 as shown in FIG.
Since the portion between the adjacent holes 7 and 7 is bulged in this way, the above-mentioned sanitary napkin 1 has a plurality of holes 7 (particularly, the openings of the holes 7) on the wearer's skin. It is hard to touch and you can get a good touch.

In the absorbent article of the present invention, it is preferable that the absorber is curved so that the portion between the adjacent holes swells not only on the skin-facing surface side but also on the non-skin-facing surface side. When the portion between the adjacent holes bulges on both the skin facing surface side and the non-skin facing surface side, better cushioning property can be obtained in the thickness direction, and the wearing feeling of the absorbent article can be improved. It can be further improved.

Further, in the above-mentioned sanitary napkin 1, the absorber 4 has a substantially uniform basis weight as a whole, and has a three-dimensional structure in which the surfaces of both the skin facing surface side S1 and the non-skin facing surface side S2 are substantially flat. However, in the present invention, the absorber is not limited to such a structure, and the absorber is, for example, the sanitary napkin 1 according to still another embodiment of the present invention shown in FIG. A middle-high portion 4H having a relatively large thickness is provided in a portion corresponding to a region (that is, a hole-forming region 70) in which a plurality of holes 7 are formed in a plan view, such as the absorber 4. You may be.

In the sanitary napkin 1 according to still another embodiment of the present invention shown in FIG. 4, the portion of the absorber 4 corresponding to the region where the plurality of holes 7 are formed in a plan view is relatively thick. It is a large middle and high part 4H.
As described above, when the portion corresponding to the hole forming region 70 of the absorber 4 is the middle and high portion 4H having a relatively large thickness, the deep hole 7 can be formed and more. Since the high-density hole bottom 7B can be formed, the strength of the hole bottom 7B can be further improved while further improving the absorption performance of the plurality of holes 7 described above.
Further, if the middle and high portions 4H are formed in the portion of the absorber 4 corresponding to the hole forming region 70, the hole forming region 70 easily adheres to the crotch portion of the wearer at the time of wearing, and is discharged from the wearer. The liquid excrement to be produced can be more accurately flowed into the hole 7 in the hole forming region 70.

The plan-view shape, various dimensions, basis weight, etc. of the absorber 4 are not particularly limited as long as they can be used as the absorber of the sanitary napkin 1, and can be adjusted according to desired absorption performance, flexibility, strength, and the like. Any shape (for example, rectangle, oval, hourglass, etc.), various dimensions, basis weight, etc. can be adopted. For example, the above-mentioned middle-high portion 4H is ^{connected to a high basis weight portion having a basis weight of 700 g / m 2} or more and 1000 g / m ² or less and the high basis weight portion, and has a basis weight of 300 g / m ² or more and 700 g / m ^2. It can be configured by a medium basis weight portion of less than, and a portion other than the middle and high portion 4H can be configured as a low basis weight ^{portion of 100 g / m 2} or more and less than 300 g / m ^2.

[Side seat]
In the sanitary napkin 1 according to the embodiment of the present invention shown in FIG. 1, the pair of side seats 5 and 5 are formed at both ends of the sanitary napkin 1 in the width direction W in a plan view as shown in FIG. Each has a pair of strip-shaped shapes extending in the longitudinal direction L.

Further, the pair of side sheets 5 and 5 are arranged at both ends of the sanitary napkin 1 in the width direction W at the positions of the skin facing surface side S1 of the surface sheet 2, and the outer end portions in the width direction W are arranged. While the back surface sheet 3 is joined to the surface of the skin-facing surface side S1 to form a fixed end portion, the inner end portion in the width direction W is not joined to any component member such as the front surface sheet 2. , Forming a free end.
Each of the pair of side sheets 5 and 5 is deformed so that the sanitary napkin 1 is curved in the longitudinal direction L when worn, so that the inner side end portion in the width direction W, which is a free end portion, stands up and the surface thereof. By a hydrophilic or hydrophobic sheet-like member that forms a leak-proof wall portion for blocking liquid excrement flowing on the surface of the skin-facing surface side S1 of the sheet 2 so as not to leak to the outer side in the width direction W. It is formed.

The hydrophilic or hydrophobic sheet-like member that can be used as the side sheet 5 is not particularly limited as long as it can function as a side sheet of a sanitary napkin, and is composed of, for example, hydrophilic or hydrophobic fibers. Examples thereof include non-woven fabrics, non-woven fabrics that have been hydrophilized or water-repellent treated, and breathable synthetic resin films.

Further, the plan view shape, various dimensions, basis weight, etc. of each of the pair of side sheets 5 and 5 are not particularly limited as long as they can be used as side sheets for sanitary napkins, and can be adjusted according to desired leakage-proof performance and the like. Any shape, various dimensions, basis weight, etc. can be adopted.

Although it is not an essential requirement for the absorbent article of the present invention to be provided with such a side sheet, when the absorbent article is provided with such a side sheet, a liquid such as menstrual blood or urine is provided. Leakage of excrement can be suppressed more effectively.

In addition to the sanitary napkins of the embodiments described above, the present invention can be applied to various absorbent articles such as panty liners, (light) incontinence pads, disposable diapers and the like. In addition, the absorbent article of the present invention can be appropriately combined, substituted, modified, or the like without being limited to the above-mentioned embodiments and the like, as long as the object and purpose of the present invention are not deviated.

1 Sanitary napkin 2 Front sheet 3 Back sheet 4 Absorber 5 Side sheet 61, 62 Squeezing groove 61B, 62B Groove bottom 7 Hole 7B Hole bottom 70 Hole forming area 8 Adhesive part

Claims (11)

An absorbent article having a longitudinal direction, a width direction, and a thickness direction, comprising a front surface sheet, a back surface sheet, and an absorber located between the sheets.
The absorbent article is viewed in a plan view.
A pair of squeezing grooves located on both sides of the central axis extending in the longitudinal direction and extending in the longitudinal direction.
It has a plurality of holes located between the pair of squeezing grooves in the width direction, and has a plurality of holes.
Each of the pair of squeezed grooves has a high-density groove bottom in which at least the surface sheet and the absorber are squeezed from the skin-facing surface side of the absorbent article in the thickness direction.
Each of the plurality of holes has a high-density hole bottom in which at least the surface sheet and the absorber are squeezed from the skin-facing surface side of the absorbent article in the thickness direction.
Further, the positions of the groove bottom and the hole bottom in the thickness direction overlap in the width direction in a cross-sectional view of the absorbent article along the width direction.
The absorbent article. The absorbent article has a plurality of adhesive portions extending in the longitudinal direction on the surface on the non-skin facing surface side.
The absorbent article according to claim 1, wherein the adhesive portion is arranged so as not to overlap the squeezing groove in the thickness direction. The absorbent article according to claim 2, wherein at least a part of the adhesive portion is arranged so as to correspond to a portion between the pressing groove and the hole portion in the thickness direction. .. Claim 2 or 3 is characterized in that at least a part of the adhesive portion is arranged so as to correspond to a portion straddling between two or more adjacent holes in a plan view in the thickness direction. Absorbent article described in. At least the surface sheet and the absorber are squeezed from the skin-facing surface side of the absorbent article in the thickness direction of the bottom of the hole, and at the same time, at least the absorber is not the absorbent article. The absorbent article according to any one of claims 1 to 4, wherein the absorbent article is squeezed from the side facing the skin in the thickness direction. At least the surface sheet and the absorber are squeezed from the skin-facing surface side of the absorbent article in the thickness direction of the groove bottom portion, and at the same time, at least the absorber is the non-skin of the absorbent article. The absorbent article according to any one of claims 1 to 5, wherein the absorbent article is also squeezed from the facing surface side in the thickness direction. The absorbent article according to any one of claims 1 to 6, wherein the surface sheet is made of a non-woven fabric containing thermoplastic resin fibers. The absorbent article according to any one of claims 1 to 7, further comprising an intermediate sheet made of a non-woven fabric containing a thermoplastic resin fiber between the surface sheet and the absorber. The absorber according to any one of claims 1 to 8, wherein the portion corresponding to the region where the plurality of holes are formed in a plan view is a middle and high portion having a relatively large thickness. The absorbent article according to one item. The absorbency according to any one of claims 1 to 9, wherein the portion between the adjacent holes is curved so as to bulge toward the skin facing surface side. Goods. The absorbent article according to any one of claims 1 to 10, wherein the surface sheet has a strength at 10% elongation in the width direction of 0.1N to 1.3N.

Images