JP6785231B2 - Absorbent article - Google Patents

Description

The present invention relates to absorbent articles, in particular to absorbent pads (urine pads) and disposable diapers.

Absorbent articles such as disposable diapers (hereinafter, also simply referred to as "diapers") and absorbent pads are required to quickly absorb the excreted body fluid and not leak it. Then, in order to effectively utilize the absorber, it is necessary to quickly diffuse the body fluid from the inseam portion to the dorsoventral portion.

In addition, since the absorbent article covers the inseam portion, it is affected by the movement of the legs and the movement of the waist. If there is a gap between the wearer's body and the absorbent article, fluid can leak through that gap, and to prevent this leak, the absorbent article fits according to various body movements. Gender is required. In order to bring about this fit, for example, it is known that an absorber such as a disposable diaper forms an embossed pattern on the entire absorber from the viewpoint of improving body fluid diffusivity / absorbability and preventing shape loss.

For example, in Patent Document 1, the skin contact surface side of the absorber is embossed, which is a diagonal grid-like compression groove extending in an inclined direction from the front body to the back body of the diaper. It is disclosed.

Japanese Unexamined Patent Publication No. 2015-016218

In the technique of Patent Document 1, when a large amount of body fluid is excreted in the inseam portion of the absorber, the body fluid is absorbed in the inseam portion and is embossed in the front body portion and the back body portion through the embossing of the inseam portion. Bodily fluids try to diffuse. On the other hand, since the embossing is a continuous pattern, the body fluid flows vigorously to the anterior-posterior end of the absorber through the embossing of the front body part and the back body part of the absorber, and the body fluid leaks from the end portion. There is a risk that it will end up.

Further, since the diagonal lattice shape is a continuous pattern, there is a problem that it is difficult to bend at the crease line in the direction perpendicular to the extending direction of the absorber, and the fit of the wearer is low.

In view of such problems, it is an object of the present invention to provide an absorber article that enhances the fit of the wearer and suppresses leakage from the front-rear end of the absorber.

In order to achieve such an object, the absorbent article of the present invention includes a liquid-permeable front sheet, a liquid-impermeable back sheet, and an absorber disposed between the front sheet and the back sheet. An absorbent article comprising, wherein a plurality of recesses are formed on the surface of the absorber on the surface sheet side, and the plurality of recesses have a plurality of first patterns extending in a first direction and a first pattern. Arranged to form a plurality of second patterns extending in a second direction intersecting one direction, and a plurality of recesses between the central region of the absorber and the both end regions sandwiching the central region. It is characterized in that a non-formed region in which is not formed is provided.

As described above, according to the present invention, it is possible to provide an absorber article that enhances the fit of the wearer and suppresses leakage from the end portion in the front-rear direction of the absorber.

It is a three-dimensional projection drawing which shows the appearance of the 1st Embodiment which applied the absorbent article by this invention to a tape type disposable diaper. It is a partial fracture plan view which developed the diaper shown in FIG. 1 and was seen from the skin contact surface side. It is sectional drawing which cut | cut the diaper shown in FIG. 2 by line III-III. It is an exploded perspective view which developed and disassembled the diaper shown in FIG. It is a developed perspective view of the diaper shown in FIG. It is a partial top view of the absorber portion of the diaper shown in FIG. 1 in the first embodiment of the present invention as viewed from the top sheet side. FIG. 5 is a schematic partially enlarged view showing an oblique grid-like embossed pattern of the inseam portion in FIG. 6 is a cross-sectional view showing a cross section of the embossed pattern of FIG. 6A along the VIB-VIB line. It is sectional drawing which shows the cross section of the absorber part of FIG. 5 by VII-VII line. It is a schematic top view which shows the example of the embossing pattern in the 2nd Embodiment of this invention. It is a schematic top view which shows the example of the embossing pattern in 3rd Embodiment of this invention.

Embodiments of the absorbent article according to the present invention will be described in detail with reference to FIGS. 1 to 9. However, the present invention is not limited to these embodiments, but also includes other absorbent articles belonging to the concept of the present invention. It should be noted that the following first to third embodiments and the forms of the absorbent articles of the modified examples described everywhere can be combined with each other.

[First Embodiment]
In the appearance of the first embodiment in which the present invention is applied to a tape-type disposable diaper, a perspective view seen from the front side is shown in FIG. FIG. 2 shows a partially broken plan view of the diaper shown in FIG. 1 unfolded and viewed from the skin contact surface side. A sectional view taken along line III-III of FIG. 2 is shown in FIG. A perspective view of the disassembled state of the tape-type disposable diaper shown in FIGS. 1 and 2 is shown in FIG. 4A, and a developed perspective view of the diaper completed by combining the components in the disassembled state is shown in FIG. 4B. Shown.

The diaper 10 has a front body region 10F, a back body region 10R, and an inseam region 10C connecting the front body region 10F and the back body region 10R. Further, when worn, the front body area 10F and the back body area 10R form an opening 10W around the waist that surrounds the wearer's waist portion. Similarly, a pair of left and right leg-circumferential openings 10L that surround the thighs of both legs of the wearer are formed by the lower end of the front body region 10F and the back body region 10R and the inseam region 10C. Then, the tape 10T attached to both side edges of the back body region 10R is engaged with the front patch 10S attached to the front body region 10F to form a tape-type diaper.

When worn, the front body area 10F is located on the ventral side of the wearer, and the back body area 10R is located on the back side of the wearer. The inseam region 10C covers the inseam of the wearer, and the wearer's legs are passed through the pair of left and right leg-circumferential openings 10L. Therefore, the leg circumference opening 10L is located at any of the thighs from the bases of both legs of the wearer.

The virtual line P extends from the ventral side to the dorsal side in the central portion of the diaper 10 in the width direction through the inseam portion. Specifically, for example, when the waist side of the diaper is up and the inseam side is down, the virtual line P extends along the surface of the diaper and in the vertical direction, and also on the dorsal side via the inseam portion. It extends in the vertical direction. In other words, this vertical direction is a direction along the central axis of the body from the wearer's head to the inseam, and the virtual line P extends along the central axis of the body.

As shown in FIGS. 2, 3, 4A and 4B, the diaper 10 in the present embodiment includes a cover sheet 11 and a liquid-impermeable back sheet (in order from the outside when viewed from the skin side of the wearer). The back sheet) 12, the absorber 13 wrapped in the core wrap (tish) 15 which is a thin hydrophilic sheet, and the liquid-permeable top sheet (front sheet) 14 that comes into contact with the wearer's skin are laminated and joined in order. It was done. The back sheet 12, the absorber 13 wrapped in the core wrap 15, and the top sheet 14 can be attached to underwear or the like to form an absorbent article that absorbs liquid.

The cover sheet 11 is formed of a rectangular thin non-woven fabric in order to obtain a good feel, and is joined to a rectangular back sheet 12 having a width narrower than that of the cover sheet 11.

The back sheet 12 is joined on the cover sheet 11 so that its longitudinal direction is substantially parallel to the virtual line P and the virtual line P passes through the center or the vicinity thereof in the width direction.

The absorber 13 of the present embodiment has an elongated shape, and in order to maintain the shape, for example, the absorber 13 is wrapped with a core wrap (tish) 15 which is a thin hydrophilic sheet whose ends are joined by gluing. There is. The absorber 13 wrapped in the core wrap 15 is arranged between the back sheet 12 and the top sheet 14. The top sheet 14 of this embodiment is joined to the back sheet 12 via an absorber 13 wrapped with a core wrap 15. In the present embodiment, the absorber 13 wrapped in the core wrap 15 is used, but the absorber in the present invention does not have to be wrapped in the core wrap.

A plurality of rubber threads 16 for forming gathers around the legs are joined to the left and right ends of the cover sheet 11 in the width direction in an extended state. Further, at the end portion on the back body region 10R side on the cover sheet 11 to which the back sheet 12 is joined, a plurality of rubber threads 17 for forming gathers around the waist are joined in a stretched state in the width direction of the cover sheet 11. Has been done.

A pair of liquid-impermeable side sheets 18 forming three-dimensional gathers are provided on the left and right side edges of the top sheet 14 in the width direction. The pair of side seats 18 are members that stand up along both side edges of the absorber 13 when the diaper 10 is worn and prevent lateral leakage of urine excreted by the wearer. A thread rubber 19 as a three-dimensional gather elastic material is arranged in a stretched state on each of the pair of side sheets 18 so that the inner edge portion thereof is folded back toward the absorber 13 and gripped, and when the thread rubber 19 contracts. , Stand up in the direction of contact with the wearer's skin. The three-dimensional gather can adopt a known configuration used for conventional disposable diapers. For example, it can be formed by sandwiching and fixing a three-dimensional gather elastic material in a stretched state between layers of a water-repellent sheet. Further, a tape 10T is bonded from the top sheet 14 side to each of the outer edge portions of the pair of side sheets 18 at a position where the cover sheet 11 is bonded to the back body region 10R.

After stacking the constituent articles of the diaper 10 shown in FIG. 4A, a pair forming a semicircular arc shape having an opening 10L around the leg in FIG. 1 at the central portion of the left and right side edges of the cover sheet 11 in the longitudinal direction. The notch portion 11A of the above is formed. Forming the pair of notches 11A completes the diaper 10 shown in FIG. 4B.

As shown in FIG. 2, the side sheet 18 of the completed diaper 10 is pulled in the longitudinal direction by the expansion and contraction of the rubber thread 19. Then, as shown in FIG. 3, it becomes a three-dimensional gather in which the inner edge portion is raised.

In the diaper 10 of the present embodiment, the absorber 13 is elongated along the virtual line P, and its longitudinal direction is parallel to the virtual line P. Then, the direction orthogonal to the virtual line P is defined as the width direction. The ratio between the longitudinal direction and the width direction of the diaper is not limited to this embodiment. This ratio is appropriately changed according to the body shape of the wearer.

Next, the structure of the absorber portion in this embodiment will be described.

FIG. 5 is a partial top view of the portion where the absorber 13 and the top sheet 14 are located, as viewed from the top sheet 14 side.

The absorber 13 of the present embodiment, which is located under the top sheet 14, is mainly composed of pulp and a super absorbent polymer (hereinafter, also referred to as “SAP”). The absorber 13 has an elongated shape so as to extend to the front body, inseam, and back body. The front body portion M1, the inseam portion M2, and the back body portion M3 are divided into three parts. In the inseam portion M2, a pair of arc-shaped notches 13a are formed in accordance with a pair of left and right leg circumference openings 10L surrounding the thigh portions of both legs. The absorber 13 of the present embodiment is provided with a notch portion 13a, and the width of the inseam portion M2 is an hourglass type narrower than the front and rear ends, but the shape of the absorber 13 of the present invention is limited to this. Absent. Assuming that the front body portion M1 to the back body portion M3 are in the front-back (up-down) direction and the direction orthogonal to the front-back (up-down) direction is the left-right direction, for example, the front-back (up-down) end corners are rounded off, and the front-back (up-down) ends. It includes various shapes such as oval, circular, and rectangular with the same length in the front, back, left, and right. The notch portion 13a may not be formed depending on the size of the absorber 13.

Here, in the present specification and the description of the claims, the "central region" of the absorber 13 of the present invention means a region in and near the center of the absorber 13 on the skin contact surface side, and is a liquid such as urination. Refers to the area that is most likely to come into contact with and the area in the vicinity. It should be noted that this "central region" can be changed depending on the physique, gender, etc. of the wearer of the absorbent article. Further, the "central region" may, for example, coincide with the inseam portion M2 as in the present embodiment, or may not coincide with the inseam portion M2 as in the third embodiment described later.

In the present embodiment, as shown in FIG. 5, the absorber 13 has a central region K2, a front end region K1 and a rear end region K3 arranged so as to sandwich the central region K2 at a predetermined interval (D1). , Are provided. In this embodiment, the central region K2 coincides with the inseam portion M2. The front end region K1 is formed so as to extend from the anterior end portion of the absorber 13 toward the inseam side, and the rear end region K3 is formed so as to extend from the rear end portion of the absorber 13 toward the inseam side.

In the description of the present specification and claims, the "front end region K1 and the rear end region K3" are referred to as "both end regions K1 and K3" sandwiching the central region K2. In the present embodiment, as shown in FIG. 5, the absorber 13 does not have a plurality of recesses 21 formed between the central region K2 of the absorber 13 and the both end regions K1 and K3 sandwiching the central region K2. A non-forming region 51 having a width D1 is provided. Details of the non-forming region 51 will be described later.

Next, a mode of embossing formed from the top sheet 14 toward the absorber 13 in the present embodiment will be described. The diaper 10 applied to the present embodiment quickly absorbs a large amount of body fluid when a large amount of body fluid is discharged at one time such as when urinating.

As shown in FIGS. 5 and 6A, the diaper 10 has a compressed portion forming region (embossed pattern forming region) N1 which is compressed by regular embossing from the surface of the top sheet 14 toward the absorber 13. A plurality of compression rows 21 are formed in the compression portion forming region N1 by compression, and a plurality of compression rows 22 forming an oblique lattice pattern in a hyperopic manner are formed by the arrangement of the recesses 21. As shown in FIG. 5, the embossed pattern is not formed at both ends of the absorber 13. Therefore, in the absorber 13, the compression portion non-forming region (emboss pattern non-forming region) N2 is located on both sides of the compression portion formation region (emboss pattern formation region) N1. This is to prevent the body fluid from leaking from the leg opening 10L along the embossing pattern.

FIG. 6A shows a part of the compression row 22 formed in the inseam portion M2 of the absorber 13 according to the present embodiment (the compression row 22 of the absorber 13 in the groove forming region N1 surrounded by the broken line circle VIA in FIG. 5). ) Is an enlarged view. As shown in FIG. 6A, the compression row 22 is formed by intermittently arranging a plurality of recesses 21 at regular intervals. The compression row 22 is divided into a first compression row (first pattern) 22a and a second compression row (second pattern) 22b according to the inclination direction thereof.

The first compression row 22a is inclined with respect to the virtual line P to the right in FIG. 5, which is the first direction, at an inclination angle α1. On the other hand, the second compression row 22b is inclined to the left in FIG. 5, which is the second direction, at an inclination angle β1 with respect to the virtual line P. That is, the plurality of recesses 21 form a plurality of first compression rows 22a extending in the first direction and a plurality of second compression rows 22b extending in the second direction intersecting the first direction. Arranged to do. In the present embodiment, the angle (α1 + β1) formed by the first compression row 22a and the second compression row 22b is 90 °, which is a right angle, and the angles α1 and β1 are the same angle, but the present invention is not limited to this. ..

In the present embodiment, by arranging the compression rows 22 in an oblique grid pattern in this way, it is possible to prevent the absorber 13 from being twisted by the front-back movement of the legs. That is, by providing the first compression row 22a and the second compression row 22b, the absorber 13 is deformed along each compression row 22 with respect to the force applied in the oblique direction due to the back-and-forth movement of the leg, so that the absorber 13 is deformed. It is possible to suppress the twisting of 13. Further, the compression row 22 increases the rigidity of the absorber 13 in the oblique direction, and prevents the absorber 13 from being cut by the tensile force in the oblique direction due to the movement of the legs.

FIG. 6B is a cross-sectional view showing a cross section of the embossed pattern of FIG. 6A along the VIB-VIB line. As shown in FIG. 6B, in the first compression row 22a, the recess 21 which is the most compressed portion having the highest compression rate and the quasi-concave 23 which is the semi-compressed portion having a lower compression rate than the recess 21 are alternately arranged. Is formed. Similarly, in the second compression row 22b, the recesses 21 and the quasi-recesses 23 are alternately arranged and formed. Here, the broken line in FIG. 6B represents the height H of the uncompressed region 25.

The recess 21 is in a state in which the top sheet 14, the core wrap 15, and the absorber 13 are integrally fixed due to a high compression ratio. On the other hand, the semi-recessed portion 23 has a weaker compression rate than the recessed portion 21, and the top sheet 14, the core wrap 15, and the absorber 13 are temporarily fixed.

Since the capillary phenomenon of the compression row 22 is stronger in the recess 21 and weaker in the quasi-recess 23, the diffusion force of the liquid is also faster in the recess 21 and slower in the quasi-recess 23 than in the diffusivity of the recess 21. Further, as for the diffusion rate of the compression row 22, the smaller the distance between the recess 21 and the recess 21, the faster the liquid diffuses, and the wider the distance, the slower the liquid diffusion.

As described above, since the compression row 22 of the present embodiment is formed with the recess 21 and the quasi-recess 23 compressed in two steps from the height H of the uncompressed region 25, the top sheet and the core wrap are formed when compressed deeply in one step. It is possible to avoid a situation in which is suddenly stretched and torn at the boundary between the compressed portion and the uncompressed region 25. In the compression column 22 of the present embodiment, two types of compression parts, a maximum compression part and a semi-compression part, are arranged, but the present invention is not limited to this, and three or more types of compression parts are arranged. A compressed sequence may be formed.

Further, as shown in FIG. 7, the plurality of recesses 21 have an adhesive interposed between the top sheet 14 and the absorber 13 wrapped by the core wrap 15, so that the top sheet 14 and the absorber 13 are together. It is formed by compression. By compressing the top sheet 14 and the absorber 13 from the surface of the top sheet 14 in this way, the recess 21 maintains its shape even when the weight of the wearer such as sitting is applied, and the compression row 22 is compressed. It's irresistible. Therefore, the compression row 22 can be used to diffuse body fluids and maintain aeration.

As shown in FIG. 5, the plurality of first compression rows 22a, which are inclined at the inclination angle α1, are arranged in parallel with each other. Similarly, the plurality of second compression rows 22b inclined at the inclination angle β1 are arranged in parallel with each other.

On the other hand, the compression row 22 is not formed in the region having the width D1 between the both end regions K1 and K3 and the central region K2. That is, a non-formed region 51 in which the recess 21 is not formed is provided between the both end regions K1 and K3 and the central region K2. As a result, the compression row 22 of the front body portion M1 and the back body portion M3 and the compression row 22 of the inseam portion M2 are formed discontinuously. Here, as shown in FIG. 5, the width D1 is between the recess 21 located in the lowermost row of the compression row 22 in the front end region K1 and the recess 21 located in the uppermost row of the compression row 22 in the central region K2. The width or the width between the recess 21 located in the lowermost row of the compression row 22 in the central region K2 and the recess 21 located in the uppermost row of the compression row 22 in the rear end region K3. In the present embodiment, the width D1 is 15 mm, preferably in the range of 10 mm to 50 mm.

The sizes of the respective parts related to the embossing pattern shown in FIGS. 5 to 7 are as follows.

As shown in FIG. 5, the distance R1 between the adjacent recesses 21 of the recesses 21 forming the compression row 22 of the front end region K1 and the rear end region K3 is about 5 mm. The interval R1 is preferably in the range of 2 mm to 15 mm. Further, in the present embodiment, the arrangement interval S1 of the first compression row 22a and the arrangement interval S2 of the second compression row 22b are 30 mm. The arrangement intervals S1 and S2 are preferably 15 mm to 50 mm. In the present embodiment, the interval S1 between the plurality of first compression columns 22a is equal to the interval S2 between the plurality of second compression columns 22b, but may be different values.

Then, as shown in FIG. 6A, the distance L1 between the adjacent recesses 21 of the recesses 21 forming the compression row 22 of the central region K2 is about 2 mm. The interval L1 is preferably in the range of 1 mm to 5 mm. The length L2 of one recess 21 is about 2.5 mm. The length L2 is preferably in the range of 1 mm to 50 mm. The width L3 of the recess is about 2 mm. The width L3 is preferably in the range of 1 mm to 5 mm. In FIGS. 5 and 6A, the recess 21 is a parallelogram, but the present invention is not limited to this, and various shapes such as a circle, an ellipse, and a triangle can be applied.

As shown in FIG. 7, the thickness L4 of the uncompressed portion such as the main absorption region 25 in the top sheet 14 and the absorber 13 is about 3 mm. The thickness L4 is preferably in the range of 2 mm to 10 mm. The depth L5 of the deepest portion of the recess 21 is about 2.5 mm. The depth L5 is preferably about 1.5 mm to 9.5 mm.

Here, in the compression row 22 formed by connecting the plurality of recesses 21, since the absorber 13 is compressed to a high density on the bottom surface, the liquid is easily diffused on the bottom surface due to the capillary phenomenon, and many of them are present. The liquid flows through the row, and a part of the liquid is absorbed from the side wall of the recess 21 or the like. On the other hand, the main absorption region 25 surrounded by the compression row 22 can sufficiently absorb the body fluid because the absorber 13 is not compressed.

Then, as can be understood from FIGS. 5 and 6A, since the distance L1 between the recesses 21 of the central region K2 is narrower than the gap R1 between the recesses 21 of the front end region K1 and the rear end region K3, it is located in the central region K2. The arrangement density of the recesses 21 of the compression row 22 (hereinafter, also referred to as “first arrangement density”) is the arrangement density of the recesses 21 of the compression row 22 located in the front end region K1 (hereinafter, also referred to as “second arrangement density”). ) And the placement density of the recess 21 of the compression row 22 located in the rear end region K3 (hereinafter, also referred to as “third placement density”). As a result, when a large amount of body fluid is excreted in the central region K2 at one time due to urination or the like, the central region K2 absorbs the body fluid in the main absorption region 25a and flows through the compression row 22 in which a part is finely stretched. Therefore, the excreted body fluid is quickly diffused from the central region K2 to the front end region K1 and the rear end region K3. After that, the body fluid flowing from the central region K2 is absorbed in the main absorption region 25b of the front end region K1 and the rear end region K3. Therefore, the body fluid is surely absorbed without overflowing in the central region K2, and is appropriately diffused in the front end region K1 and the rear end region K3 so that the entire absorber 13 can be effectively utilized.

In the present invention, the form of the embossed pattern is not limited to the shape shown in FIG. 5, and various forms such as a form in which the first arrangement density is not higher than the second arrangement density and the third arrangement density can be adopted. Is. For example, the first arrangement density, the second arrangement density, and the third arrangement density may all have the same value. This can be realized, for example, by making all three embossed patterns of the recesses 21 formed in the front end region K1, the central region K2, and the rear end region K3 the same pattern. Further, the first arrangement density of the central region K2 to be diffused most may be maximized, and the remaining second arrangement density and the third arrangement density may be set to different values.

Further, in the present invention, the form of the embossed pattern is not limited to the shape shown in FIG. 5, and the compression row 22 may have a different inclination angle as long as the non-forming region 51 is provided.

In the present embodiment, since the discontinuous non-formed region 51 in which the compressed row 22 is not formed is provided, when a large amount of body fluid flows vigorously from the central region K2 to both end regions K1 and K3 through the compressed row 22. In addition, the body fluid can be impregnated into the absorber in the discontinuous region 51 where the recess 21 is discontinuous, and the flow velocity can be reduced. As a result, the non-forming region 51 plays a role of a relation, and it is possible to prevent the body fluid that has vigorously flowed to the anterior-posterior end portion of the absorber 13 from leaking from the waist portion of the diaper 10.

The front end region K1 and the rear end region K3 are each in contact with the wearer's body, and the central region K2 is preferably worn away from the wearer's body, but the recess 21 is not formed. The position where the region 51 is provided is preferably arranged in a region that does not touch the wearer's body.

Further, when the non-forming region 51 is arranged in a region that does not touch the wearer's body as described above, the soaked body fluid can be absorbed in a state of being separated from the body.

Further, by providing the non-formed region 51 without the compression row 22 of the longitudinal component of the absorber 13, the absorber 13 can be easily bent in the non-formed region 51, so that the fit of the wearer can be improved. Can be done.

Further, once the body fluid is impregnated into the absorber 13 in the non-formation region 51 where the recess 21 is discontinuous, the body fluid can flow into not only the continuous compression rows 22 but also a plurality of adjacent compression rows 22. Therefore, the diffusivity of the body fluid can be further improved.

[Second Embodiment]
FIG. 8 is a top view of the disposable diaper 10 according to the second embodiment of the present invention with the surface of the absorber 13 on the top sheet 14 side facing up.

The first point that the shape of the absorber 13 of the present embodiment is different from the shape of the absorber 13 of the first embodiment is that the interval S1 and the second compression row of the first compression row 22a of the first embodiment The point is that the distance S3 of the first compression row 220a and the distance S4 of the second compression row 220b of the front end region K1 and the rear end region K3 of the present embodiment are wider than the distance S2 of 22b. The second difference is that the non-formed region 82 in which the recess 21 of the compression row 220 having the width D2 is not formed in the front end region K1 and the rear end region K3 of the present embodiment is formed in the longitudinal direction of the absorber 13. This is a point provided in the (front-back direction).

As shown in FIG. 8, the inclination angles α1 and β1 of the first compression row 220a and the second compression row 220b with respect to the virtual line P of the present embodiment are the same as the inclination angles α1 and β1 of the first embodiment. , May be different values.

On the other hand, the area of the main absorption region (uncompressed region) 25a surrounded by the first compressed row 220a and the second compressed row 220b in the central region K2 of the present embodiment is the main absorption region in the central region K2 of the first embodiment. It is the same as the area of 25a, but may have a different value. Further, the area of the main absorption region 25b surrounded by the first compression row 220a and the second compression row 220b in the front end region K1 and the rear end region K3 of the present embodiment is the main absorption region in the central region K2 of the first embodiment. It is formed wider than the area of 25b.

In the present embodiment, similarly to the non-formed region 81 having a width D1 between the both end regions K1 and K3 and the central region K2, the absorber 13 provided in the front end region K1 and the rear end region K3 extends in the longitudinal direction. The compression row 220 is not formed in the non-formed region 82 having the width D2. That is, the compression rows 220 of the front end region K1 and the rear end region K3 are formed discontinuously in the width direction. The width D1 of the present embodiment is 15 mm, preferably in the range of 10 mm to 50 mm. The width D2 is 10 mm, preferably in the range of 5 mm to 20 mm.

Further, as shown in FIG. 8, the arrangement interval S3 of the first compression row 220a in the front end region K1 and the rear end region K3 is 30 mm. The arrangement interval S3 is preferably 10 mm to 30 mm. The arrangement intervals S1 and S2 of the first compression row 220a and the second compression row 220b in the central region K2 are 20 mm. The arrangement intervals S1 and S2 are preferably 15 mm to 40 mm. In the present embodiment, the arrangement intervals S1 and S2 and the arrangement intervals S3 and S4 are set to the same value, but may be different values.

In the absorber 13 of the present embodiment, the first placement density of the recess 21 of the compression row 220 located in the central region K2 is the second placement density of the recess 21 of the compression row 220 located in the front end region K1 and the rear end region K3. The non-formed region 81 is satisfied with a higher relationship than the third arrangement density of the recess 21 of the compression row 220 located in, and the recess 21 is not formed between the central region K2 and the both end regions K1 and K3. Since it is provided, the same effect as that of the absorber 13 of the first embodiment can be obtained. In the present invention, the compression row 220 may be formed by one continuous recess, or a plurality of recesses 21 may be formed by being intermittently arranged at intervals from each other.

Further, in the present embodiment, the front end region K1 and the rear end region K3 are provided with a non-forming region 82 in which the recesses 21 are discontinuous in the longitudinal direction of the absorber 13, so that the wearer's waist circumference and the like are rounded. Even in this case, the absorber 13 can be bent along the non-forming region 82, so that the fit of the wearer can be improved.

[Third Embodiment]
FIG. 9 is a top view of the disposable diaper 10 according to the third embodiment of the present invention, with the surface of the absorber 13 on the top sheet 14 side facing up.

The first point that the shape of the absorber 13 of the present embodiment is different from the shape of the absorber 13 of the first embodiment and the second embodiment is that the first compression row 230a of the central region K2 of the present embodiment S3 and the interval S4 of the second compression column 230b are formed wider than the interval S1 of the first compression column 22a and the interval S2 of the second compression column 22b of the central region K2 of the first embodiment. Is. The second difference is that an additional compression row (third pattern) 240 is provided in the central region K2 in the longitudinal direction of the absorber 13 connecting the intersections of the first compression row 230a and the second compression row 230b. It is a point formed by forming a convex arrow shape in the opposite direction of the front end region K1 and the rear end region K3. That is, the plurality of recesses 21 formed in the central region K2 are arranged so as to further form an additional compression row 240 extending in the first direction and a third direction different from the second direction. The distance S3 between the first compression rows 230a and the distance S4 between the second compression rows 230b in the front end region K1 and the rear end region K3 of the present embodiment is the first of the first embodiment as in the second embodiment. It is formed wider than the intervals S1 and S2 of the first compression row 22a and the second compression row 22b. Further, the third difference is that the central region K2 does not coincide with the inseam portion M2. As shown in FIG. 9, the central region K2 has a shape having a protruding portion in the front-rear direction of the absorber 13, and the front end region K1 and the rear end region K3 are predetermined to the protruding portion in the front-rear direction of the central region K2. Each has a shape such that they are arranged at intervals (D3). In the present embodiment, as shown in FIG. 9, a non-forming region 91 having a width D3 is provided between the central region K2 of the absorber 13 and the both end regions K1 and K3 sandwiching the central region K2. In the present embodiment, the compression row 230 is not formed in the non-formed region 91 between the both end regions K1 and K3 and the central region K2. That is, the compression rows 230 are discontinuously formed in the front end region K1, the rear end region K3, and the central region K2. The width D3 of this embodiment is 8 mm, preferably in the range of 5 mm to 20 mm.

In the absorber 13 of the present embodiment, the first placement density of the recess 21 of the compression row 230 located in the central region K2 is the second placement density of the recess 21 of the compression row 230 located in the front end region K1 and the rear end region K3. The non-formed region 91 is satisfied with a higher relationship than the third arrangement density of the recess 21 of the compression row 230 located in, and the recess 21 is not formed between the central region K2 and the both end regions K1 and K3. Since it is provided, the same effect as that of the absorber 13 of the first embodiment and the second embodiment can be obtained. The compression columns 230 and 240 of the present invention may be formed by one continuous recess, or a plurality of recesses 21 may be formed by being intermittently arranged at intervals from each other.

Further, in the present embodiment, since the vertically continuous recess is formed in the central region K2, it can be bent vertically along the recess. Therefore, for example, when the wearer is a man, the front end region K1 side. The male genitalia are wrapped in the arrow-shaped region, the arrow-shaped region on the rear end region K3 side abuts on the shape of the wearer's buttocks, and the absorber 13 can be bent along the non-formed region 91, so that the wearer can bend the male genitalia. The fit of the can be improved. Further, in the case of a woman, urine leakage can be reduced by bending in a W shape along the concave portion and aligning the absorber 13 at a position close to the urination hole.

The disposable diaper of the present invention is applicable to both adults and children. Further, in each of the above embodiments, the tape-type diaper has been described as an example, but it goes without saying that the present invention can also be applied to a pants-type diaper. Further, the absorbent article of the present invention is not specified only for diapers, but is applied to all other general absorbent articles such as absorbent pads.

Further, the shapes of the non-formed regions 51, 81, 82, and 91 according to each of the above embodiments are shapes having a constant width, but are not limited to these, and various shapes such as those having a non-constant width and those including a curved line are included. It may be in shape.

Further, in the present invention, a mode in which the non-formed region is discontinuously formed is permitted as long as it has the effect of improving the fit of the wearer and suppressing leakage from the front-rear end of the absorber 13. Is what you do.

In the first embodiment, the distances between the width D1 between the front end region K1 and the central region K2 and the width D1 between the rear end region K3 and the central region K2 are the same but different. May be good. This also applies to the width D2 in the second embodiment and the width D3 in the third embodiment.

10 Disposable diaper 10F Front body area 10R Back body area 10C Inseam area 10W Waist circumference opening 10L Leg circumference opening 10T Tape 10S Front patch 11 Cover sheet 11A Notch 12 Back sheet (back sheet)
13 Absorber 14 Top sheet (surface sheet)
15 Core wrap 16 Thread rubber (thread rubber around the legs)
17 Thread rubber (thread rubber around the waist)
18 Side sheet 19 Thread rubber (three-dimensional gather elastic material)
21 Recesses 22, 220, 230 Compressed rows 22a, 220a, 230a First compression rows 22b, 220b, 230b Second compression rows 23 Semi-concave 240 Additional compression rows 25, 25a, 25b Main absorption region (uncompressed region)
51, 81, 82, 91 Non-formed region K1 Front end region K2 Central region K3 Rear end region L1, R1 Front-rear distance between adjacent recesses in the compression row L2 Length of recess in compression row L3 Width of recess in compression row S1, S3 Formation interval of a plurality of first compressed columns S2, S4 Formation interval of a plurality of second compressed columns H Height of uncompressed region D1 to D3 Width of non-formed region

Claims (5)

An absorbent article comprising a liquid-permeable front surface sheet, a liquid-impermeable back surface sheet, and an absorber arranged between the front surface sheet and the back surface sheet.
Wherein the absorbent article, the topsheet and the absorbent body and by both compressing the plurality of recesses are formed on the surface of the surface sheet side,
The plurality of recesses form a plurality of first patterns extending in the first direction and a plurality of second patterns extending in a second direction intersecting the first direction. Arranged
The plurality of recesses are formed intermittently in the first direction and the second direction.
A non-formed region in which the plurality of recesses are not formed is provided between the central region of the absorber and the both end regions sandwiching the central region.
The absorber is interposed between the bottom of the recess and the back sheet .
In the central region, the plurality of first patterns of the recess and at least one of the plurality of second patterns are inseam from ventral to dorsal in the widthwise central portion of the absorbent article. An absorbent article characterized in that it is formed to cross an imaginary line extending through a portion . The absorbent article according to claim 1, wherein the arrangement density of the plurality of recesses in the central region is higher than the arrangement density of the plurality of recesses in the both end regions. The absorbent article according to claim 1 or 2, wherein the width between the plurality of recesses formed in the both end regions is wider than the width between the plurality of recesses formed in the central region. The plurality of recesses formed in the central region are arranged so as to further form a third pattern extending in the first direction and a third direction different from the second direction. The absorbent article according to any one of claims 1 to 3, characterized in that. The invention according to any one of claims 1 to 4, wherein a non-formed region in which the plurality of recesses are not formed is provided in the both end regions in a direction in which the both end regions face each other. Absorbent article.

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