JP2019141308A - Absorbent article - Google Patents

Abstract

To provide an absorbent article for improving absorption efficiency of an absorber having a plurality of layers.SOLUTION: An absorbent article 10 comprises: a top sheet 14 with liquid permeability; a back sheet 12 with liquid impermeability; and an absorber 13 arranged between the top sheet 14 and the back sheet 12. The absorber 13 comprises: a SAP layer 17b as SAP layer 17b constituted of SAP, partitioned on a principal surface so as to have a plurality of SAP regions; an upper layer absorbent core 17a and a lower layer absorbent core 17c laminated so as to sandwich the SAP layer 17b from above and below; and a second sheet 16 arranged so as to partition the plurality of SAP regions. The second sheet 16 is made to adhere to a lower layer sheet part constituting the absorbent article 10 and arranged more on a skin non-contact side from the SAP layer 17b.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed therebetween.

  2. Description of the Related Art Absorbent articles such as urine pads and disposable diapers in which discharged body fluid (hereinafter also simply referred to as “body fluid”) is absorbed by an absorber are widely known. The absorbent body is obtained by sandwiching an absorbent core mainly composed of pulp and a super absorbent polymer (hereinafter also referred to as “SAP”) with a covering member such as tissue or nonwoven fabric.

  The amount of bodily fluid discharged by an adult is greater than that of an infant, and an absorbent core composed of a plurality of layers may be used to absorb the large amount of bodily fluid.

  In this configuration, the bodily fluid discharged to the top sheet is partially absorbed by the absorbent core on the upper layer side (skin contact surface side), and the bodily fluid that has not been completely absorbed passes through the absorbent core on the upper layer side. Will reach the absorbent core on the lower layer side (non-skin contact surface side), but in the lower absorbent core, the range of contact with body fluids is narrow, the absorption is uneven, and the absorption efficiency may not be good .

  Therefore, by providing a hole on the top sheet side of the absorbent core and disposing a diffusion sheet inside the absorbent core, the body fluid that has reached the inside of the absorbent core through the hole is diffused, thereby forming a lower layer. For example, Patent Literature 1 discloses an absorbent article in which body fluid is widely brought into contact with the absorbent core on the side to improve absorption efficiency.

  In addition, by disposing a diffusion sheet between the absorbent cores of a plurality of layers, the body fluid that has passed through the upper absorbent core is diffused by the diffusion sheet, so that the body fluid can be spread widely in the lower absorbent core. For example, Patent Literature 2 discloses an absorbent article that is brought into contact with each other and has improved the absorption efficiency of an absorber having a plurality of layers.

JP 2008-289640 A Japanese Patent Application Laid-Open No. 2014-0668813

  By the way, when the SAP of the absorbent core absorbs the body fluid, the jelly-like SAP gathers in one place and becomes a lump, wrapping the SAP that has not yet been absorbed, and the absorbability may be impaired. In addition, the SAP that has absorbed the body fluid into a jelly-like shape prevents the body fluid from passing through. It becomes difficult to guide the discharged body fluid to the absorbent core on the lower layer side, which may reduce the absorption efficiency.

  Therefore, as in the absorbent articles described in Patent Document 1 and Patent Document 2, not only simply providing the diffusion sheet inside the absorbent core, but also determining the shape and arrangement of the diffusion sheet from the above viewpoint. Is required.

  The objective of this invention is providing the absorbent article for improving the absorption efficiency of the absorber which has a some layer.

  An absorbent article according to the present invention includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent disposed between the top sheet and the back sheet. The absorber is an SAP layer composed of SAP, and is laminated on the main surface so as to have a plurality of SAP regions, and is laminated so as to sandwich the SAP layer from above and below. An upper absorbent core and a lower absorbent core, and a second sheet arranged so as to partition the plurality of SAP regions, wherein the second sheet is arranged on the skin non-contact side with respect to the SAP layer. It is adhere | attached on the lower layer sheet | seat part which comprises the said absorbent article.

  According to the present invention, the body fluid that has reached the second sheet positioned inside the absorber can be guided to the SAP layer and the lower layer absorbent core and absorbed. In addition, since the second sheet is arranged so as to partition the SAP layer, it is possible to prevent the plurality of SAP regions that have absorbed humor from adhering to each other to be clumped together to form a lump. It is possible to make it difficult to cause a phenomenon of wrapping SAP that has not yet been absorbed. Therefore, it becomes possible to improve the absorption efficiency of the absorber having a plurality of layers.

It is a perspective view of an example of the urine pad concerning a 1st embodiment of the present invention. It is a disassembled perspective view of the urine pad shown in FIG. It is the top view which looked at the urine pad of the extension state concerning a 1st embodiment from the top sheet side. FIG. 4 is a cross-sectional view in the IV-IV direction in FIG. 3. It is sectional drawing of the urine pad which concerns on 2nd Embodiment of this invention, and is IV-IV direction sectional drawing in FIG. It is sectional drawing of the urine pad which concerns on 3rd Embodiment of this invention, and is IV-IV direction sectional drawing in FIG. It is sectional drawing of the urine pad which concerns on 4th Embodiment of this invention, and is IV-IV direction sectional drawing in FIG. It is sectional drawing of the urine pad which concerns on 5th Embodiment of this invention, and is IV-IV direction sectional drawing in FIG.

  An embodiment of an absorbent article according to the present invention will be described in detail with reference to FIGS. 1 to 8. However, the present invention is not limited to the aspect of the present embodiment.

  First, a first embodiment in which the present invention is applied to a urine pad will be described below.

<First Embodiment>
<Configuration>
FIG. 1 shows a perspective view of an example of a urine pad according to the first embodiment of the present invention. The absorbent article 10 according to the present embodiment relates to a urine pad (absorption pad). The urine pad 10 can be attached to an undergarment or a cloth pant-type exterior body called holder pants made for holding the urine pad 10 and can be used by being superimposed on the inner surface side of the disposable diaper. It is. The urine pad 10 includes 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.

  When worn, the front body region 10F is positioned on the wearer's ventral side, and the back body region 10R is positioned on the wearer's back side. And the crotch area | region 10C will cover a wearer's crotch at the time of wear.

  FIG. 2 is a schematic exploded perspective view of the urine pad 10 shown in FIG. 1, and FIG. 3 is a plan view of the urine pad 10 in the stretched state according to the first embodiment as viewed from the top sheet 14 side. 4 is a cross-sectional view in the IV-IV direction in FIG. The urine pad 10 in FIG. 3 is shown in a partially broken state for convenience of explanation, and the cover sheet 11 is not shown in FIG. 4 (the same applies to FIGS. 5 to 8 described later). .

  As shown in FIG. 2, the urine pad 10 in this embodiment includes a cover sheet 11 formed of a thin non-woven fabric in order from the outside (non-skin contact side) and a liquid impermeability. A laminate in which a back sheet (back sheet) 12 having an absorbent body, an absorbent body (six-layer laminate described later) 13, a top sheet (top sheet) 14 having liquid permeability, and a pair of side sheets 15 are stacked. It has a structure.

  The top sheet 14 has a rectangular shape and is made of a nonwoven fabric having liquid permeability. The back sheet 12 is bonded to the cover sheet 11, and the absorber 13 is disposed between the back sheet 12 and the top sheet 14, and the top sheet 14 is bonded to the back sheet 12 through the absorber 13. . As shown in FIG. 2, a pair of notches 11N and 12N are formed on the left and right sides of the crotch region 10C of the cover sheet 11 and the back sheet 12, respectively.

  The absorbent body 13 of the present embodiment located under the top sheet 14 is composed of an upper layer absorbent core 17a, a second sheet (diffusion sheet) 16, an SAP layer 17b, and a lower layer absorbent core 17c in order from the skin contact side. What is composed of layers is sandwiched between sheet portions 18 composed of two layers, an upper sheet 18a and a lower sheet 18b. The absorbent core 17 includes an upper absorbent core 17a, an SAP layer 17b, and a lower absorbent core 17c.

  The upper layer absorbent core 17a is a pulp layer made of pulp. The SAP layer 17b is composed of SAP, and the SAP layer 17b is partitioned on the main surface (skin surface side of the lower absorbent core) so as to have a plurality of SAP regions. Here, the main surface is referred to as a portion corresponding to a wide surface (not a thin and narrow surface on the thickness side) of paper or a similar member. In the present embodiment, this main surface represents the surface on the skin contact side, but may be on either the skin contact side or the skin non-contact side as long as the effects of the present invention are achieved. In the present embodiment, the SAP layer 17b has three SAP regions 17b1, 17b2, and 17b3 as shown in FIGS. The lower layer absorbent core 17c is a mixed layer mainly composed of pulp and SAP. As shown in FIGS. 2 and 3, the upper absorbent core 17a has a rectangular shape, the SAP layer 17b is composed of three strips, and the lower absorbent core 17c has a back sheet 12. It has a gourd-like shape.

  The second sheet 16 can be composed of a hydrophilic sheet (for example, tissue) or a nonwoven fabric. The second sheet 16 is arranged so as to partition a plurality of SAP regions. In the present embodiment, as shown in FIG. 4, the second sheet 16 has a portion that is bent so as to enter a gap between the plurality of SAP regions 17 b 1, 17 b 2, and 17 b 3. In the present embodiment, the portion of the second sheet 16 that has entered the gap is bent as shown in FIG. 4. However, in the present invention, it may not be bent. For example, a rounded portion may be formed in the second sheet 16 without bending the second sheet 16, and the rounded portion may be inserted into the gap. In addition, when the side portion of the gap into which the second sheet 16 enters (that is, the side portion of the SAP region) is inclined, the second sheet 16 may be arranged along the side portion without being bent. In the present embodiment, as shown in FIG. 4, in the portion of the second sheet 16 that is bent so as to enter the gap, a gap is formed in the portion where the skin contact surfaces of the second sheet 16 face each other. However, in the present invention, as long as the effects of the present invention are exhibited, this gap may not be formed, and an absorbent material such as SAP or pulp may be provided in this gap (from the second embodiment described later). The same applies to the fifth embodiment).

  The second sheet 16 is bonded to the lower layer sheet portion constituting the urine pad 10 disposed on the skin non-contact side with respect to the SAP layer 17b via the bonding portion 20. Here, the lower layer sheet portion refers to a sheet on the lower layer side of the SAP layer 17b among the sheets constituting the urine pad 10, for example, the lower layer absorbent core 17c, the lower sheet 18b, the back sheet 12, and will be described later. This refers to the third sheet 21. In the present embodiment, the lower layer sheet portion is the lower layer absorbent core 17c. The bonding portion 20 is formed by heat-sealing by heat sealing, welding with ultrasonic waves, applying an adhesive, or the like. As shown in FIG. 4, the adhesive portion 20 is formed by adhering to the lower layer absorbent core 17 c in such a shape that both side edges of the second sheet 16 spread outward. The adhesive portion 20 makes it possible to fix the SAP layer 17b to the three regions with the second sheet 16, so that the plurality of SAP regions 17b1, 17b2, 17b3 that have absorbed the body fluid and become jellies are stuck together. It is possible to suppress the phenomenon that the SAP lump that has absorbed the body fluid wraps the SAP that has not yet been absorbed. In the present embodiment, the shape and the formation area of the adhesive portion 20 can be determined in consideration of the above effects and effectively guiding body fluid from the second sheet 16 to the lower absorbent core 17c.

  The upper sheet 18a and the lower sheet 18b of the present embodiment sandwiching the absorbent core 17 from above and below are each composed of tissue, nonwoven fabric, or the like. As shown in FIGS. 2 and 3, the upper sheet 18 a and the lower sheet 18 b each have a rectangular shape.

  In the present invention, the absorbent core 17 may have more than three layers instead of three layers as in the present embodiment. In addition, the constituent elements of the upper absorbent core 17a, the SAP layer 17b, and the lower absorbent core 17c are not limited to the present embodiment. For example, the upper absorbent core 17a may be a mixed layer of pulp and SAP, You may comprise the absorptive core 17c only with a pulp. When the lower layer absorbent core 17c is a pulp layer and the second sheet 16 is adhered to the lower layer absorbent core 17c, the lower layer absorbent core 17c is preferably made by an airlaid method. With this configuration, a strong lower layer absorbent core 17c can be obtained. Furthermore, as the contour shape of the upper absorbent core 17a, the SAP layer 17b, and the lower absorbent core 17c, various shapes such as an ellipse, a circle, or a square can be adopted in addition to the shapes of the present embodiment. It is. Further, the contour shapes of the upper absorbent core 17a, the SAP layer 17b, and the lower absorbent core 17c are not limited to shapes extending in parallel to the longitudinal direction of the absorbent body 13, as shown in FIG. In the invention, those extending parallel to the width direction of the absorber 13 and those extending obliquely with respect to the longitudinal direction of the absorber 13 are included. The number of regions constituting the SAP layer 17b is not limited to “3”. Similarly, various shapes can be adopted for the shapes of the upper sheet 18a and the lower sheet 18b. Further, in the present invention, the sheet portion 18 wraps the absorbent core 17 in a single layer or more than two layers, in addition to the two-layer mode in which the absorbent core 17 is sandwiched from above and below as in the present embodiment (so-called A mode (such as a core wrap) is also acceptable. In the urine pad 10 according to the present embodiment, the absorbent body 13 sandwiched between the sheet portions 18 is used. However, in the absorbent article according to the present invention, the absorbent core 17 that is not sandwiched between the sheet portions 18 is used. Also good.

  In the present embodiment, a pair of hydrophobic side sheets 15 forming a three-dimensional gather are provided on the left and right side edges in the width direction of the top sheet 14. The pair of side sheets 15 are members that stand on both the left and right sides of the absorbent body 13 when worn, and prevent side leakage of the discharged body fluid. Cutout portions 15N are formed on the outer edge portions of the pair of side sheets 15 in the same shape as the cutout portions 11N and 12N of the cover sheet 11 and the backsheet 12. In each of the pair of side sheets 15, a rubber thread 19 as a three-dimensional gather stretchable material is arranged in an expanded state in a form in which the inner edge portion is folded and gripped toward the absorber 13. The pair of side sheets 15 rises toward the wearer's skin contact direction when the rubber thread 19 contracts. The three-dimensional gather can adopt a known configuration used for a conventional urine pad. 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. In this embodiment, as shown in FIG. 4, the pair of side sheets 15 are respectively bonded to the left and right side edges of the top sheet 14 so as to seal the left and right side edges in the width direction of the top sheet 14. .

  Conventionally, when an absorbent core composed of a plurality of layers is used, the absorbent core on the lower layer side diffuses in the absorbent core or between the absorbent cores of the multiple layers in order to efficiently absorb the body fluid. For example, Patent Document 1 and Patent Document 2 disclose a mode in which the sheet is arranged.

  By the way, when the SAP of the absorbent body absorbs the body fluid, the jelly-shaped SAP gathers in one place and lumps the SAP that has not yet been absorbed, and the absorbability may be impaired. In addition, the SAP that has absorbed the body fluid into a jelly form prevents the body fluid from passing through. Therefore, when such a phenomenon occurs in the absorbent core on the upper layer side of the absorbent body having a plurality of layers, It becomes difficult to guide the discharged body fluid to the absorbent core on the lower layer side, which may reduce the absorption efficiency. Therefore, as in the absorbent articles described in Patent Document 1 and Patent Document 2, not only simply providing the diffusion sheet inside the absorbent core, but also determining the shape and arrangement of the diffusion sheet from the above viewpoint. Is required.

  According to this embodiment, the body fluid that has reached the second sheet 16 located inside the absorber 13 can be guided to the SAP layer 17b and the lower layer absorbent core 17c and absorbed. Further, since the second sheet 16 is arranged so as to partition the SAP layer 17b, the plurality of SAP regions 17b1, 17b2, and 17b3 that have absorbed the bodily fluid and become jelly-like are prevented from sticking to each other and becoming a lump. It is possible to make it difficult for the SAP lump that has absorbed the wrapping of SAP that has not yet been absorbed to occur. Therefore, it becomes possible to improve the absorption efficiency of the absorber 13 having a plurality of layers.

Second Embodiment
In the second embodiment of the present invention, unlike the first embodiment, the second sheet 16 is also arranged in the gaps between the regions of the partitioned lower layer absorbent core 17c. With this configuration, it is easier to guide the body fluid to the lower absorbent core 17c than in the first embodiment, and it is possible to efficiently absorb the body fluid.

  FIG. 5 is a cross-sectional view of the urine pad according to the present embodiment, and is a cross-sectional view in the IV-IV direction in FIG. 3. Among the elements constituting the absorbent article according to the present embodiment, those having the same function are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

  In the present embodiment, the lower layer absorbent core 17c is partitioned on the main surface so as to have a plurality of lower layer absorbent core regions. As shown in FIG. 5, the lower layer absorbent core 17c has three lower layer absorbent core regions 17c1, 17c2, and 17c3.

  In the present embodiment, the gap between the three SAP regions 17b1, 17b2, and 17b3 and the gap between the three lower absorbent core regions 17c1, 17c2, and 17c3 are continuous in the thickness direction of the absorbent body 13, respectively. 16 is continuously arranged in the two continuous gaps. The second sheet 16 has a portion bent so as to enter each of the continuous gaps. As described in the first embodiment, the portion of the second sheet 16 that has entered the gap can be folded in addition to various forms that are not folded.

  As shown in FIG. 5, the adhesive portion 20 is formed by adhering to the lower layer sheet portion in such a shape that both side edges of the second sheet 16 spread outward. In the present embodiment, the lower layer sheet portion is the lower sheet 18b. Here, for example, when the absorber 13 has a form that does not include the lower sheet 18 b, the second sheet 16 is bonded to the back sheet 12.

  When the second sheet 16 and the lower sheet 18b are bonded, the lower sheet 18b is preferably made of a tissue or a nonwoven fabric, and more preferably made of a nonwoven fabric because it is stronger than the tissue. It is preferable that the bonding portion 20 between the second sheet 16 and the lower sheet 18b is bonded to the back sheet 12 at the bonding portion.

  According to this embodiment, similarly to the first embodiment, body fluid can be guided to the SAP layer 17b and the lower layer absorbent core 17c and absorbed. In addition, it is possible to make it difficult for a plurality of SAP regions 17b1, 17b2, and 17b3 to stick to each other and wrap up SAP that has not yet been absorbed. Therefore, it becomes possible to improve the absorption efficiency of the absorber 13. Further, the second sheet 16 is configured to enter a continuous gap between the gaps of the plurality of SAP regions 17b1, 17b2, and 17b3 and the gaps of the plurality of lower-layer absorbent core regions 17c1, 17c2, and 17c3. Compared to the first embodiment, it is easier to guide body fluid to the lower absorbent core 17c, and it is possible to efficiently absorb the body fluid using the three-layer absorbent core. In addition, when the body fluid that has permeated the second sheet 16 moves to the lower sheet 18b, the body fluid can be diffused in the lower sheet 18b, and the body fluid is transferred to the lower absorbent core 17c via the lower sheet 18b. It can be guided and absorbed easily.

<Third Embodiment>
In the third embodiment of the present invention, unlike the second embodiment in which both side edges of the second sheet 16 are bonded to the lower sheet 18b so as to spread outward, the side edges of the second sheet 16 are lower layers. It is folded back so as to cover a part of the absorbent core 17c, and the folded portion is bonded to the lower layer sheet portion. With this configuration, as in the second embodiment, body fluid can be easily guided to the SAP layer 17b and the lower absorbent core 17c, and can be efficiently absorbed.

  6 is a cross-sectional view of the urine pad according to the present embodiment, and is a cross-sectional view in the IV-IV direction in FIG. Among the elements constituting the absorbent article according to the present embodiment, those having the same function are denoted by the same reference numerals as those of the second embodiment, and the description thereof is omitted.

  In the present embodiment, as shown in FIG. 6, the second sheet 16 is configured such that both side edge portions are folded back so as to cover a part of the lower layer absorbent core 17 c, and the folded portion is a lower sheet. It is bonded to 18b. As shown in FIG. 6, the two adhesive portions 20 at the left and right ends of the four adhesive portions 20 are formed by bonding the folded portion to the lower sheet 18 b, and the two adhesive portions 20 at the center are Similarly to the second embodiment, the second sheet 16 is formed by adhering both side edges to the lower sheet 18b so as to spread outward. In the manufacturing process of the second embodiment, the folded portion may be formed by putting both side edges of the second sheet 16 extending outward into the lower layer absorbent core 17c. In the present invention, the invention is not limited to this, and both side edges of the second sheet 16 may be folded back so as to cover a part of the SAP layer 17b. Further, both side edges of the second sheet 16 may be configured to be folded back so as to cover not only a part of the SAP layer 17b or the lower absorbent core 17c, but as in a known mode of wrapping the absorbent body with a core wrap. Further, the SAP layer 17b and the lower layer absorbent core 17c may be wrapped with the second sheet 16.

  According to the present embodiment, it is possible to improve the absorption efficiency of the absorber 13 as in the second embodiment. In addition, it is easier to guide the body fluid to the lower absorbent core 17c than in the first embodiment, and the three-layer absorbent core can be efficiently absorbed. Furthermore, body fluid can be guided to the lower absorbent core 17c via the lower sheet 18b and can be easily absorbed.

<Fourth embodiment>
Unlike the second embodiment, the fourth embodiment of the present invention partitions the upper absorbent core 17a into a plurality of regions. With this configuration, it is easier to guide body fluid to the SAP layer 17b and the lower absorbent core 17c than in the second embodiment, and it is possible to absorb using the entire three-layer absorbent core.

  7 is a cross-sectional view of the urine pad according to the present embodiment, and is a cross-sectional view in the IV-IV direction in FIG. Among the elements constituting the absorbent article according to the present embodiment, those having the same function are denoted by the same reference numerals as those of the second embodiment, and the description thereof is omitted.

  In the present embodiment, the upper absorbent core 17a is partitioned on the main surface so as to have a plurality of upper absorbent core regions. The upper absorbent core 17a has three upper absorbent core regions 17a1, 17a2, and 17a3. In the present embodiment, as in the second embodiment, the gap between the three SAP regions 17b1, 17b2, and 17b3 and the gap between the three lower absorbent core regions 17c1, 17c2, and 17c3 are in the thickness direction of the absorber 13. In addition, the gap between the three SAP regions 17b1, 17b2, and 17b3 and the gap between the three upper absorbent core regions 17a1, 17a2, and 17a3 are respectively continuous in the thickness direction of the absorber 13. Yes.

  The adhesive part 20 is formed by adhering to the lower sheet part in a shape that spreads both side edges of the second sheet 16 outward, as in the second embodiment. In the present embodiment, the lower layer sheet portion is the lower sheet 18b.

  According to the present embodiment, it is possible to improve the absorption efficiency of the absorber 13 as in the second embodiment. In addition, it is easier to guide the body fluid to the lower absorbent core 17c than in the first embodiment, and the three-layer absorbent core can be efficiently absorbed. Furthermore, body fluid can be guided to the lower absorbent core 17c via the lower sheet 18b and can be easily absorbed. And since the discharged body fluid is more likely to flow from the gap between the upper absorbent core regions 17a1, 17a2, and 17a3 toward the lower SAP layer 17b and the lower absorbent core 17c, it is 3 than in the second embodiment. The absorbent core of the layer can be used for efficient absorption.

  In the modified example of the present embodiment, the skin contact surface side of the second sheet 16 includes gaps between the upper absorbent core regions 17a1, 17a2, and 17a3, gaps between the SAP regions 17b1, 17b2, and 17b3, and lower absorbent core regions 17c1, In three gaps where the gaps 17c2 and 17c3 are continuous, the upper sheet 18a is bonded to the skin non-contact surface side. With this configuration, the body fluid that has penetrated into the upper sheet 18a can be quickly guided to the upper absorbent core 17a, the SAP layer 17b, and the lower absorbent core 17c via the second sheet 16, and efficient absorption is achieved. Can be realized. Note that the skin contact surface side of the second sheet 16 is separated from the skin of the upper sheet 18a by two gaps in which the gaps of the upper absorbent core regions 17a1, 17a2, and 17a3 and the gaps of the SAP regions 17b1, 17b2, and 17b3 are continuous. It may be adhered to the non-contact surface side.

  In the present invention, the skin contact surface side of the second sheet 16 may be bonded to the skin non-contact surface side of the top sheet 14. With this configuration, it is possible to realize efficient absorption as described above.

<Fifth Embodiment>
Unlike the second embodiment, the fifth embodiment of the present invention further includes a third sheet 21 arranged so as to partition a plurality of lower layer absorbent core regions. With this configuration, a diffusion sheet is disposed in the SAP layer 17b and the lower absorbent core 17c, and a flow path for absorbing body fluid is secured. Therefore, the SAP layer 17b and the lower absorbent core 17c are efficient. It can be absorbed.

  FIG. 8 is a cross-sectional view of the urine pad according to the present embodiment, and is a cross-sectional view in the IV-IV direction in FIG. Among the elements constituting the absorbent article according to the present embodiment, those having the same function are denoted by the same reference numerals as those of the second embodiment, and the description thereof is omitted.

  A third sheet 21 is further provided so as to partition the plurality of lower layer absorbent core regions. Similar to the second sheet 16, the third sheet 21 is a diffusion sheet, and may be composed of a hydrophilic sheet (for example, tissue) or a nonwoven fabric. As shown in FIG. 8, the second sheet 16 is bonded to the back sheet 12 via two adhesive portions 20 at both ends of the second sheet 16, and to the third sheet 21 via two adhesive portions 20 ′ at the center. Are glued together. Further, as shown in FIG. 8, the third sheet 21 is bonded to the lower sheet 18b via four bonding portions 20 ''. In the present embodiment, the lower layer sheet portions are the back sheet 12 and the third sheet 21.

  According to the present embodiment, it is possible to improve the absorption efficiency of the absorber 13 as in the second embodiment. In addition, it is easier to guide the body fluid to the lower absorbent core 17c than in the first embodiment, and the three-layer absorbent core can be efficiently absorbed. Furthermore, body fluid can be guided to the lower absorbent core 17c via the lower sheet 18b and can be easily absorbed. And it becomes possible to introduce | transduce the bodily fluid which reached | attained the 3rd sheet | seat 21 to the SAP layer 17b or the lower layer absorptive core 17c, and to absorb it more efficiently than 2nd Embodiment.

<Others>
The present invention is not limited to the above-described embodiments and modifications described anywhere, and appropriate modifications and variations can be made without departing from the technical idea of the present invention.

  For example, the absorbent article according to each of the above-described embodiments or modifications thereof is not limited to the above-described structure, and may have any configuration as long as it is an absorbent article specified in the claims. There may be. For example, the present invention can be applied to various absorbent articles for adults and infants, such as unfolded and pants-type disposable diapers.

  In addition, in the urine pad 10 according to each of the above embodiments or modifications thereof, a pair of notches 11N and 12N are formed, but in the present invention, the shape of the urine pad 10 can be appropriately changed, For example, a simple rectangular shape can be used without providing these notches.

10 Urine pad 10F Front body region 10R Rear body region 10C Inseam region 11 Cover sheet 11N, 12N, 15N Notch 12 Back sheet 13 Absorber 14 Top sheet 15 Side sheet 16 Second sheet 17a Upper layer absorbent core 17b SAP layer 17c Lower layer Absorbent core 18a Upper sheet 18b Lower sheet 19 Rubber thread 20, 20 ', 20''Adhesive part 21 Third sheet

Claims (7)

An absorbent article comprising a top sheet having liquid permeability, a back sheet having liquid impermeability, and an absorber disposed between the top sheet and the back sheet,
The absorber is
An SAP layer composed of SAP, the SAP layer being partitioned on the main surface so as to have a plurality of SAP regions; and
An upper absorbent core and a lower absorbent core laminated so as to sandwich the SAP layer from above and below,
A second sheet arranged to partition the plurality of SAP regions,
The said 2nd sheet | seat is adhere | attached on the lower layer sheet | seat part which comprises the said absorbent article distribute | arranged to the skin non-contact side from the said SAP layer, The absorbent article characterized by the above-mentioned. The lower absorbent core is partitioned on the main surface to have a plurality of lower absorbent core regions,
The gaps of the plurality of SAP regions and the gaps of the plurality of lower absorbent core regions are continuous,
The absorbent article according to claim 1, wherein the second sheet is continuously arranged in the two continuous gaps.   The second sheet is configured to be folded back so that both side edges cover at least a part of the lower absorbent core or the SAP layer, and the folded portion is bonded to the lower sheet portion. The absorptive article according to claim 1 or 2 characterized by things. The upper absorbent core is partitioned on the main surface to have a plurality of upper absorbent core regions,
The absorbent article according to claim 2, wherein a gap between the plurality of SAP regions and a gap between the plurality of upper absorbent core regions are continuous. The absorbent body further includes an upper sheet and a lower sheet sandwiching the upper layer absorbent core, the second sheet, the SAP layer, and the lower layer absorbent core, which are composed of four layers,
The skin contact surface side of the second sheet is a gap where the gaps of the plurality of upper absorbent core regions, the gaps of the plurality of SAP regions, and the gaps of the plurality of lower absorbent core regions are continuous. The absorbent article according to claim 4, wherein the absorbent article is bonded to the non-skin contact surface side of the sheet.   The absorbent article according to claim 2, further comprising a third sheet disposed so as to partition the plurality of the lower absorbent core regions.   The said lower layer sheet | seat part is the said back sheet, The absorbent article as described in any one of Claims 1-6 characterized by the above-mentioned.

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