WO2017038030A1

WO2017038030A1 - Absorbent article

Info

Publication number: WO2017038030A1
Application number: PCT/JP2016/003736
Authority: WO
Inventors: 勝彦杉山; 遥絵清水; 竜祐尾▲崎▼
Original assignee: 王子ホールディングス株式会社
Priority date: 2015-09-04
Filing date: 2016-08-12
Publication date: 2017-03-09
Also published as: TW201709882A; CN107949360A; JP6785231B2; CN107949360B; JPWO2017038030A1; RU2686509C1; TWI578973B

Abstract

An absorbent article (10) provided with a liquid-permeable surface sheet (14), a liquid-impermeable back sheet (12), and an absorbent body (13) disposed between the surface sheet (14) and back sheet (12) wherein the absorbent article (10) is characterized in that a plurality of concavities (21) are formed on the surface of the surface sheet (14) side in the absorbent body (13), the plurality of concavities (21) are arranged so as to form a plurality of first patterns (22a) extending in a first direction and a plurality of second patterns (22b) extending in a second direction intersecting the first direction, and a non-forming region (51) that does not form a plurality of concavities (21) is provided between the central region (K2) of the absorbent body (13) and the two end regions (K1, K3) on either side of the central region (K2).

Description

Absorbent articles

The present invention relates to an absorbent article, and in particular, to an absorbent pad (urine pad) and a disposable diaper.

Absorbent articles such as disposable diapers (hereinafter also simply referred to as “diapers”) and absorbent pads are required to absorb absorbed body fluids quickly and not leak. And in order to utilize an absorber effectively, it is necessary to diffuse a bodily fluid from a crotch part to a dorsal part.

Also, since the absorbent article covers the crotch part, 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, the body fluid may leak through the gap, and in order to prevent this leakage, the absorbent article fits various body movements. Sex is required. In order to bring about this fitting property, for example, it is known that an emboss pattern is formed on the entire absorbent body of the absorbent body such as a disposable diaper from the viewpoint of improvement of body fluid diffusibility / absorbability and prevention of deformation.

For example, in Patent Document 1, the absorbent body is subjected to embossing on the skin contact surface side of the absorbent body, which is an oblique lattice-shaped compressed groove extending obliquely with respect to the direction from the front to the back of the diaper. It is disclosed.

JP2015-016218A

In the technique of Patent Document 1, when a large amount of body fluid is excreted in the crotch portion of the absorbent body, the body fluid is absorbed in the crotch portion and passes through the embossment of the crotch portion to emboss the front body portion and the back body portion. Body fluid tries to diffuse. On the other hand, because the embossing is a continuous pattern, body fluid flows vigorously through the embossments of the front body part and the back body part of the absorber to the front and rear end portions of the absorber, and body fluid leaks from the end portions. There is a risk that.

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

In view of such a problem, an object of the present invention is to provide an absorbent article that enhances the fit of a wearer and suppresses leakage from an end portion in the front-rear direction of the absorbent body.

In order to achieve such an object, the absorbent article of the present invention includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet. In the absorbent article, the absorbent body has a plurality of recesses formed on the surface sheet side surface, and the plurality of recesses includes a plurality of first patterns extending in a first direction, A plurality of recesses arranged between the central region of the absorber and both end regions sandwiching the central region, and arranged to form a plurality of second patterns extending in a second direction intersecting with the direction of one The non-formation area | region in which no is formed is provided.

As described above, according to the present invention, it is possible to provide an absorbent article that enhances the wearer's fit and suppresses leakage from the front and rear end portions of the absorbent body.

It is a three-dimensional projection figure which shows the external appearance of 1st Embodiment which applied the absorbent article by this invention to the tape-type disposable diaper. It is the partial fracture | rupture top view which expand | deployed the diaper shown in FIG. 1 and was seen from the skin contact surface side. FIG. 3 is a cross-sectional view of the diaper shown in FIG. 2 cut along line III-III. It is the disassembled perspective view which expand | deployed and disassembled the diaper shown in FIG. It is an expansion perspective view of the diaper shown in FIG. It is the partial top view which looked at the absorber part of the diaper shown in FIG. 1 in the 1st Embodiment of this invention from the top sheet side. FIG. 6 is a schematic partial enlarged view showing an embossed pattern in an oblique lattice shape at a crotch portion in FIG. 5. FIG. 6B is a cross-sectional view showing a cross section taken along line VIB-VIB of the embossed pattern of FIG. 6A. FIG. 6 is a cross-sectional view showing a cross section taken along line VII-VII of the absorber portion of FIG. 5. It is a typical top view which shows the example of the embossing pattern in the 2nd Embodiment of this invention. It is a typical top view which shows the example of the embossing pattern in the 3rd Embodiment of this invention.

Embodiments of the absorbent article according to the present invention will be described in detail with reference to FIGS. However, the present invention is not limited to these embodiments, but includes other absorbent articles belonging to the concept of the present invention. In addition, the following 1st thru | or 3rd embodiment and the form of the absorbent article of the modified example described everywhere can also be combined mutually.

[First Embodiment]
In the external appearance of 1st Embodiment which applied this invention to the tape-type disposable diaper, the 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 as viewed from the skin contact surface side. FIG. 3 is a sectional view taken along line III-III in FIG. FIG. 4A shows a perspective view of the disassembled state in which the tape-type disposable diaper shown in FIGS. 1 and 2 is developed and disassembled, and FIG. 4B shows an exploded perspective view of the diaper completed by combining the disassembled components. Show.

The diaper 10 has a front body region 10F, a back body region 10R, and a crotch region 10C that connects the front body region 10F and the back body region 10R. Moreover, the waist periphery opening part 10W which surrounds a wearer's waist part with the front body area | region 10F and the back body area | region 10R at the time of wear is formed. Similarly, a pair of left and right leg openings 10L that surround the thighs of the wearer's legs are formed by the lower ends of the front body region 10F and the back body region 10R and the crotch region 10C. Then, the tape 10T attached to the 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 wearing, the front body region 10F is located on the wearer's ventral side, and the back body region 10R is located on the wearer's back side. The crotch region 10 C covers the wearer's crotch, and the leg of the wearer is passed through the pair of left and right leg openings 10 L. Therefore, the leg periphery opening 10L is located at any position around the thigh from the base of the wearer's legs.

The imaginary line P extends through the crotch part from the abdominal side to the back side at the center in the width direction of the diaper 10. Specifically, the imaginary line P extends, for example, along the diaper surface and in the vertical direction when the waist side of the diaper is up and the crotch side is down. It extends in the vertical direction. In other words, the vertical direction is a direction along the center axis of the body from the wearer's head to the crotch, and the virtual line P extends along the center axis of the body.

As shown in FIG. 2, FIG. 3, FIG. 4A and FIG. 4B, the diaper 10 in the present embodiment is a cover sheet 11 and a liquid-impermeable back sheet (in order from the outside as viewed from the skin side of the wearer). A back sheet 12, an absorbent body 13 wrapped with a core wrap (tissue) 15, which is a hydrophilic thin sheet, and a liquid-permeable top sheet (top sheet) 14 that touches the skin of the wearer are sequentially stacked and joined. It is what. In addition, the absorbent article 13 and the top sheet 14 wrapped with the back sheet 12 and the core wrap 15 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 touch, and is joined to a rectangular back sheet 12 that is narrower than the cover sheet 11.

The back sheet 12 is bonded onto the cover sheet 11 so that the longitudinal direction thereof is substantially parallel to the imaginary line P and the imaginary line P passes through the center in the width direction or the vicinity thereof.

The absorbent body 13 of the present embodiment has an elongated shape, and in order to maintain the shape, for example, the absorbent body 13 is wrapped with a core wrap (tissue) 15, which is a hydrophilic thin sheet in which ends are bonded together by gluing. Yes. The absorbent body 13 wrapped with the core wrap 15 is disposed 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 the absorber 13 wrapped with the core wrap 15. In addition, in this embodiment, although the absorber 13 wrapped with the core wrap 15 is used, the absorber in this invention does not need to be wrapped with the core wrap.

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

A pair of liquid-impermeable side sheets 18 that form a three-dimensional gather are provided on the left and right edges of the top sheet 14 in the width direction. The pair of side sheets 18 is a member that rises along both side edges of the absorbent body 13 when the diaper 10 is worn, and prevents side leakage of urine excreted by the wearer. In each of the pair of side sheets 18, a rubber thread 19 as a three-dimensional gather elastic material is disposed in an expanded state in a manner that the inner edge of the side sheet 18 is folded and gripped toward the absorber 13, and when the rubber thread 19 contracts. Stand up toward the wearer's skin contact direction. The three-dimensional gather can employ a known configuration used in conventional disposable diapers. For example, it can be formed by sandwiching and fixing a stretched three-dimensional gather elastic material between the layers of the water repellent sheet. Furthermore, the tape 10T is joined to the outer edge part of each of the pair of side sheets 18 from the top sheet 14 side at a position where it is joined to the rear body region 10R of the cover sheet 11.

A pair of diapers 10 shown in FIG. 4A are overlapped with each other, and then a pair of semicircular arcs that form leg openings 10L in FIG. The notch portion 11A is formed. When the pair of notches 11A is formed, the diaper 10 shown in FIG. 4B is completed.

As shown in FIG. 2, the side sheet 18 of the completed diaper 10 is drawn in the longitudinal direction by the expansion and contraction of the thread rubber 19. And as FIG. 3 shows, it becomes a three-dimensional gather where the inner edge part stood | started up.

In addition, as for the diaper 10 in this embodiment, the absorber 13 becomes long along the virtual line P, and the longitudinal direction is parallel to the virtual line P. A direction orthogonal to the virtual line P is defined as a width direction. In addition, the ratio of the longitudinal direction of a diaper and the width direction is not limited to this embodiment. This ratio is appropriately changed according to the wearer's body shape.

Next, the structure of the absorber part 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 located under the top sheet 14 is mainly composed of pulp and a superabsorbent polymer (hereinafter, also referred to as “SAP”). The absorbent body 13 has an elongated shape so as to cover the front body, the crotch, and the back body. And it is divided into the front body part M1, the crotch part M2, and the back body part M3. In the crotch portion M2, a pair of notches 13a having an arc shape is formed in accordance with a pair of left and right leg openings 10L surrounding the thick crotch portions of both legs. The absorbent body 13 of the present embodiment is provided with a notch 13a and is an hourglass type in which the width of the crotch part M2 is narrower than the front and rear ends, but the shape of the absorbent body of the present invention is not limited to this. Absent. When the front body part M1 to the back body part M3 are defined as the front and back (up and down) directions, and the direction perpendicular to the front and back part M3 is the left and right direction, for example, the front and back (up and down) end corners are rounded down, and the front and back (up and down) extend Various shapes are included, such as an elliptical shape, a circular shape, and a rectangular shape having the same length in the front and rear (up and down) and left and right directions. Note that the notch 13 a may not be formed depending on the size of the absorber 13.

Here, in the description of the present specification and claims, the “central region” of the absorbent body 13 of the present invention refers to the center of the absorbent body 13 on the skin contact surface side and the vicinity thereof, and is a liquid such as urine An area that is likely to come into contact with the first area and an area in the vicinity thereof. In addition, this "center area | region" can be changed with the wearer's physique, sex, etc. of an absorbent article. In addition, for example, the “central region” may coincide with the crotch portion M2 as in the present embodiment, or may not coincide with the crotch portion M2 as in a third embodiment described later.

In the present embodiment, as shown in FIG. 5, the absorber 13 includes a central region K2, and a front end region K1 and a rear end region K3 arranged so as to sandwich the central region K2 with a predetermined interval (D1) therebetween. Are provided. In the present embodiment, the central region K2 coincides with the crotch portion M2. The front end region K1 is formed to extend from the front end portion of the absorbent body 13 to the crotch side, and the rear end region K3 is formed to extend from the rear end portion of the absorber 13 to the crotch 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, K3” sandwiching the central region K2. In the present embodiment, as shown in FIG. 5, the absorbent body 13 is not formed with a plurality of recesses 21 between the central region K2 of the absorbent body 13 and both end regions K1 and K3 sandwiching the central region K2. A non-formation region 51 having a width D1 is provided. Details of the non-formation region 51 will be described later.

Next, the form of embossing formed from the top sheet 14 toward the absorber 13 in this 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 a time such as during urination.

As shown in FIG. 5 and FIG. 6A, the diaper 10 has a compression portion formation region (emboss pattern formation region) N1 subjected to compression by regular embossing from the surface of the top sheet 14 toward the absorber 13. In the compression portion forming region N1, a plurality of concave portions 21 are formed by compression, and a plurality of compressed rows 22 that form a diagonal lattice pattern in the distance are formed by the arrangement of the concave portions 21. As shown in FIG. 5, the emboss pattern is not formed on both ends of the absorber 13. Therefore, the absorber 13 is one in which the compression part non-formation area (emboss pattern non-formation area) N2 is located on both sides of the compression part formation area (emboss pattern formation area) N1. This is to prevent body fluid from leaking from the leg opening 10L through the emboss pattern.

6A shows a part of the compressed row 22 formed in the crotch portion M2 of the absorbent body 13 according to the present embodiment (the compressed row 22 of the absorbent body 13 in the groove forming region N1 surrounded by the broken-line circle VIA in FIG. 5). It is an enlarged view showing. As shown in FIG. 6A, the compression row 22 is formed by intermittently arranging a plurality of concave portions 21 with a predetermined interval. The compressed string 22 is divided into a first compressed string (first pattern) 22a and a second compressed string (second pattern) 22b according to the inclination direction.

The first compression row 22a is inclined with respect to the imaginary line P at the inclination angle α1 in the right direction in FIG. On the other hand, the second compression row 22b is inclined with respect to the virtual line P at an inclination angle β1 in the left direction in FIG. 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. Are arranged to be. In the present embodiment, the angle (α1 + β1) formed by the first compression row 22a and the second compression row 22b is 90 °, 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 lattice shape in this way, the absorber 13 is prevented from being swung by the back and forth 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 longitudinal movement of the legs. 13 can be prevented from twisting. Further, the compression row 22 increases the rigidity of the absorbent body 13 in the oblique direction, and the absorbent body 13 is prevented from being cut by an oblique tensile force caused by the movement of the legs.

FIG. 6B is a cross-sectional view showing a cross section taken along line VIB-VIB of the emboss pattern of FIG. 6A. As shown in FIG. 6B, in the first compression row 22a, the recesses 21 that are the most compressed portions having the highest compression rate and the quasi-recessed portions 23 that are the semi-compressed portions having a lower compression rate than the recesses 21 are alternately arranged. Has been formed. Similarly, the recesses 21 and the quasi-recesses 23 are alternately formed in the second compression row 22b. 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 at a high compression rate. On the other hand, the quasi-recessed portion 23 is in a state in which the top sheet 14, the core wrap 15, and the absorber 13 are temporarily fixed at a compression rate weaker than that of the recessed portion 21.

The capillary phenomenon of the compression row 22 is that the recess 21 is stronger and the quasi-recess 23 is weaker, so that the diffusion of the liquid is also faster and the diffusion of the quasi-recess 23 is slower than the diffusivity of the recess 21. Further, the diffusion rate of the compression row 22 is such that the liquid is diffused faster when the interval between the concave part 21 and the concave part 21 is narrow, and the liquid diffusion is slower when the gap is wider.

Thus, since the compression row | line | column 22 of this embodiment has formed the recessed part 21 and the semi-recessed part 23 which were compressed in two steps from the height H of the non-compressed area | region 25, if it compresses deeply in one step, a top sheet or a core wrap Can be prevented from being suddenly stretched at the boundary between the compressed portion and the non-compressed region 25 and broken. In the compression train 22 of the present embodiment, two types of compression units, the most compression unit and the semi-compression unit, are arranged, but the present invention is not limited to this, and three or more types of compression units are arranged. A compressed train may be formed.

Further, as shown in FIG. 7, the plurality of recesses 21 are formed such that an adhesive is interposed between the top sheet 14 and the absorbent core 13 wrapped with the core wrap 15 so that the top sheet 14 and the absorbent body 13 are It is formed by compression. Thus, by compressing the top sheet 14 and the absorber 13 from the surface of the top sheet 14, the concave portion 21 maintains its shape even in a state where the weight of the wearer such as seating is applied, and the compression row 22 is compressed. Don't hit. Therefore, this compressed row 22 can be used to diffuse body fluid and maintain ventilation.

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

On the other hand, the compression row 22 is not formed in the region of the width D1 between the both end regions K1, K3 and the central region K2. That is, the non-formation area | region 51 in which the recessed part 21 is not formed is provided between the both-ends area | regions K1 and K3 and the center area | region K2. Thereby, the compression row | line | column 22 of the front body part M1 and the back body part M3, and the compression row | line | column 22 of the crotch part M2 will be formed discontinuously. Here, as shown in FIG. 5, the width D 1 is between the recesses 21 located in the lowermost row of the compression row 22 in the front end region K 1 and the recesses 21 located in the uppermost row of the compression row 22 in the central region K 2. The width or the width between the recesses 21 located in the lowermost row of the compression row 22 in the central region K2 and the recesses 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 and is preferably in the range of 10 mm to 50 mm.

The size of each part related to the emboss pattern shown in FIGS. 5 to 7 is as follows.

As shown in FIG. 5, the interval 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. 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 a different value.

And as FIG. 6A shows, the space | interval L1 between the adjacent recessed parts 21 of the recessed part 21 which forms the compression row | line | column 22 of the center area | region K2 is about 2 mm. The distance 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. 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 non-compressed portion such as the main absorbent region 25 in the top sheet 14 and the absorbent body 13 is about 3 mm. The thickness L4 is preferably in the range of 2 mm to 10 mm. And the depth L5 of the deepest part of the recessed part 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 a plurality of recesses 21, since the density of the absorber 13 is compressed to a high state at the bottom surface, the bottom surface easily diffuses liquid by capillary action, and many The liquid flows and runs in the row, and a part of the liquid is absorbed from the side walls of the recesses 21. On the other hand, the main absorption region 25 surrounded by the compression row 22 can sufficiently absorb body fluid because the absorber 13 is not compressed.

As can be understood from FIGS. 5 and 6A, since the interval L1 between the recesses 21 in the central region K2 is narrower than the interval R1 between the recesses 21 in 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 in the compressed row 22 (hereinafter also referred to as “first arrangement density”) is also referred to as the arrangement density of the recesses 21 in the compression row 22 located in the front end region K1 (hereinafter also referred to as “second arrangement density”). ) And the arrangement density of the recesses 21 of the compression row 22 located in the rear end region K3 (hereinafter also referred to as “third arrangement density”). Thereby, when a large amount of body fluid is excreted at once in the central region K2 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 train 22 partially stretched. Thus, the excreted body fluid is quickly diffused from the central region K2 to the front end region K1 and the rear end region K3. Thereafter, the body fluid flowing from the central region K2 is absorbed by the main absorption region 25b of the front end region K1 and the rear end region K3. Therefore, the body fluid is reliably absorbed without overflowing in the central region K2, and is appropriately diffused into the front end region K1 and the rear end region K3, so that the entire absorbent body 13 can be effectively utilized.

In the present invention, the form of the embossed pattern is not limited to the form shown in FIG. 5, and various forms such as a form in which the first placement density is not higher than the second placement density and the third placement density can be adopted. It is. For example, all of the first arrangement density, the second arrangement density, and the third arrangement density may be set to the same value. This can be achieved, 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. Alternatively, the first arrangement density of the central region K2 that is most desired to be diffused may be maximized, and the remaining second arrangement density and third arrangement density may be set to different values.

In the present invention, the form of the embossed pattern is not limited to the shape shown in FIG. 5, and may be one in which the inclination angle of the compression row 22 is different as long as the non-formation region 51 is provided.

In this embodiment, when the discontinuous non-formation region 51 in which the compression row 22 is not formed is provided, a large amount of body fluid flows vigorously through the compression row 22 from the central region K2 to both end regions K1, K3. In addition, the body fluid is once soaked into the absorbent body in the non-formation region 51 where the recess 21 is discontinuous, and the flow velocity can be reduced. Thereby, the non-formation area | region 51 plays the role of a relation, and it can suppress that the bodily fluid which flowed to the front-back direction edge part of the absorber 13 violently leaks from the waist part of the diaper 10.

The front end region K1 and the rear end region K3 are each in a state of touching 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, as described above, when the non-formation region 51 is arranged in a region where the wearer's body is not touched, the soaked body fluid can be absorbed in a state of being separated from the body.

Moreover, since the non-formation area | region 51 without the compression row | line | column 22 of the longitudinal direction component of the absorber 13 can be provided, since the absorber 13 can be easily bent in the non-formation area | region 51, a wearer's fit property is improved. Can do.

Further, once the body fluid is soaked into the absorber 13 in the non-formation region 51 where the recesses 21 are discontinuous, the body fluid can be caused to flow not only into the continuous compression row 22 but also into a plurality of adjacent compression rows 22. Therefore, the diffusibility of body fluid can be further improved.

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

The first point that the shape of the absorber 13 of this embodiment is different from the shape of the absorber 13 of the first embodiment is that the interval S1 of the first compression row 22a and the second compression row of the first embodiment. Compared to the interval S2 of 22b, the interval S3 of the first compression row 220a and the interval S4 of the second compression row 220b of the front end region K1 and the rear end region K3 of the present embodiment are formed wider. A second difference is that the non-formation region 82 in which the concave portion 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 the longitudinal direction of the absorber 13. This is a point provided in the (front-rear direction).

As shown in FIG. 8, the inclination angles α1 and β1 of the first compression row 220a and the second compression row 220b of the present embodiment with respect to the virtual line P 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 compression row 220a and the second compression 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. Although it is the same as the area of 25a, it may be a different value. In addition, 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-formation region 81 having the width D1 between the both end regions K1, K3 and the central region K2, it extends in the longitudinal direction of the absorber 13 provided in the front end region K1 and the rear end region K3. The compression row 220 is not formed in the existing non-formation region 82 having the width D2. That is, the compression row 220 of the front end region K1 and the rear end region K3 is formed discontinuously in the width direction. The width D1 of this embodiment is 15 mm, and is 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 rows 220a in the front end region K1 and the rear end region K3 is 30 mm. The arrangement interval S3 is desirably 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 desirably 15 mm to 40 mm. In the present embodiment, the arrangement intervals S1 and S2 and the arrangement intervals S3 and S4 are the same value, but may be different values.

In the absorbent body 13 of the present embodiment, the first arrangement density of the recesses 21 of the compression row 220 located in the central region K2 is the second arrangement density of the depressions 21 of the compression row 220 located in the front end region K1 and the rear end region K3. The non-formation region 81 in which the high relationship is satisfied as compared with the third arrangement density of the recesses 21 of the compression row 220 located in the center and the recesses 21 are not formed between the center region K2 and the both end regions K1, 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 intermittently arranged at intervals.

Furthermore, in the present embodiment, the front end region K1 and the rear end region K3 are provided with the non-formation region 82 in which the concave portion 21 is discontinuous in the longitudinal direction of the absorbent body 13, so that the wearer's waist and the like are rounded. Even if it is a case, since the absorber 13 can be bent along the non-formation area | region 82, a wearer's fitting property can be improved.

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

The first point that the shape of the absorbent body 13 of the present embodiment is different from the shape of the absorbent body 13 of the first and second embodiments is that the first compression row 230a of the central region K2 of the present embodiment. The interval S3 and the interval S4 of the second compression row 230b are formed wider than the interval S1 of the first compression row 22a and the interval S2 of the second compression row 22b in the central region K2 of the first embodiment. It is. The second difference is that an additional compression row (third pattern) 240 is arranged in the longitudinal direction of the absorbent body 13 connecting the intersections of the first compression row 230a and the second compression row 230b in the central region K2. It is formed and a convex arrow shape is formed in a direction in which the front end region K1 and the rear end region K3 are opposed to each other. 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 a third direction different from the first direction and the second direction. Note that the interval S3 of the first compression row 230a and the interval S4 of the second compression row 230b in the front end region K1 and the rear end region K3 of the present embodiment are the same as in the second embodiment, as in the second embodiment. It is formed wider than the intervals S1 and S2 between the first compression row 22a and the second compression row 22b. Furthermore, the third difference is that the central region K2 does not coincide with the crotch 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 that is arranged with a gap (D3). In the present embodiment, as shown in FIG. 9, a non-formation region 91 having a width D3 is provided between the central region K2 of the absorber 13 and 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-forming region 91 between the both end regions K1, K3 and the central region K2. That is, the front end region K1, the rear end region K3, and the central region K2 are formed with discontinuous compression rows 230. The width D3 of this embodiment is 8 mm, and is preferably in the range of 5 mm to 20 mm.

In the absorbent body 13 of the present embodiment, the first arrangement density of the recesses 21 of the compression row 230 located in the central region K2 is the second arrangement density and the rear end region K3 of the recesses 21 of the compression row 230 located in the front end region K1. A non-formation region 91 in which a high relationship is satisfied as compared with the third arrangement density of the recesses 21 of the compression row 230 located in the center and the recesses 21 are not formed between the central region K2 and both end regions K1, 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 trains 230 and 240 of the present invention may be formed by one continuous recess, or may be formed by intermittently arranging the plurality of recesses 21 at intervals.

Furthermore, in the present embodiment, since the vertically continuous concave portion is formed in the central region K2, since it can be bent vertically along the concave portion, for example, when the wearer is a male, the front end region K1 side Since the male organ is 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 absorbent body 13 can be bent along the non-formed region 91. Can improve the fit. In the case of a woman, the urine leakage can be reduced by bending into a W shape along the recess and aligning the absorber 13 at a position close to the urination hole.

The disposable diaper of the present invention can be applied to both adults and children. Moreover, in each said embodiment, although demonstrated taking the case of the tape-type diaper, it cannot be overemphasized that it is applicable also to a pants-type diaper in this invention. Moreover, the absorbent article of the present invention is not limited to diapers, but can be applied to other general absorbent articles such as an absorbent pad.

Further, the shape of the

non-formation regions

51, 81, 82, 91 according to each of the above embodiments is a shape having a certain width, but is not limited to this, and various shapes such as those not having a certain width and those including a curve are included. It may be a shape.

Furthermore, in this invention, if the effect of improving a wearer's fit property and suppressing the leak from the front-back direction edge part of the absorber 13 is allowed, the aspect in which a non-formation area | region is formed discontinuously is permitted. To do.

In the first embodiment, the distance 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 are different. Also good. The same applies to the width D2 in the second embodiment and the width D3 in the third embodiment.

DESCRIPTION OF SYMBOLS 10 Disposable diaper 10F Front body area | region 10R Rear body area | region 10C Crotch area | region 10W Waist circumference opening part 10L Leg circumference opening part 10T Tape 10S Front patch 11 Cover sheet 11A Notch part 12 Back sheet (back surface sheet)
13 Absorbent body 14 Top sheet (surface sheet)
15 Core wrap 16 Thread rubber (leg rubber thread)
17 Thread rubber (waist around the waist)
18 Side sheet 19 Yarn rubber (three-dimensional gather elastic material)
21

Concave portion

22, 220, 230

Compression row

22a, 220a, 230a

First compression row

22b, 220b, 230b Second compression row 23 Semi-recessed portion 240

Additional compression row

25, 25a, 25b Main absorption region (non-compression region)
51, 81, 82, 91 Non-formed region K1 Front end region K2 Central region K3 Rear end region L1, R1 Front-rear spacing between adjacent recesses in the compression row L2 Length of the recess in the compression row L3 Width of the recess in the compression row S1, S3 Formation intervals S2 and S4 of the plurality of first compression rows H Formation intervals H of the plurality of second compression rows Heights D1 to D3 of the non-compression region

Claims

An absorbent article comprising a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet,
In the absorbent body, a plurality of recesses are formed on the surface sheet side surface,
The plurality of recesses form a plurality of first patterns extending in a first direction and a plurality of second patterns extending in a second direction intersecting the first direction. Arranged,
An absorbent article, wherein a non-formed region in which the plurality of recesses are not formed is provided between a central region of the absorbent body and both end regions sandwiching the central region.
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 plurality of recesses are intermittently formed in the first direction and the second direction,
The absorbent article according to claim 1 or 2, wherein a width between the plurality of recesses formed in the both end regions is wider than a 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 a third direction different from the first direction and the second direction. The absorbent article according to any one of claims 1 to 3, wherein:
The non-forming area | region where the said several recessed part is not formed in the said both end area | region is provided in the direction which the said both end area | region opposes, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. Absorbent article.