JP2020036754A - Absorbent article - Google Patents

Abstract

To provide an absorbent article capable of suppressing a risk of leakage of excrement to the outside in a width direction, while improving wearing property.SOLUTION: There is provided an absorbent article (1) comprising: an absorber (10); a skin side sheet (2); an intermediate sheet (3); and a non-skin side sheet (5). The skin side sheet (2) comprises a plurality of open holes (H), and a skin side folded-back part (2h) folded to the non-skin side is provided on each of both end parts in the width direction. A tip part of the skin side folded-back part (2h) is joined to the non skin side sheet (5) at a junction part(5a). In a cross section along a width direction of a part where a distance between a side end of the absorber (10) and a side end (2e) of the skin side folded-back part (2h) in the width direction, is the longest, a side end (5e) outside the pair of junctions (5a) is arranged on the outside of the side end of the absorber (10), in the width direction, and the intermediate sheet (3) has an intermediate folded-back part (3h) folded to the non-skin side on each of both end parts in the width direction and covers the whole region of a side part of the absorber (10).SELECTED DRAWING: Figure 4

Description

  The present invention relates to an absorbent article.

  Absorbent articles that are fixed to a wearer's clothes for use include sanitary napkins, panty liners, and absorbent pads. Like the napkin 1 disclosed in Patent Literature 1, the top sheet 3 covers the skin side and the side of the absorbent core 21 and is fixed to the back sheet 5 on the non-skin side of the absorbent core 21, so that the wearability is improved. It is known to improve.

JP 2016-22136

  However, the napkin 1 disclosed in Patent Document 1 is covered by a cover sheet 22 such as a tissue provided on the skin side of the absorbent core 21 before excrement absorbed from the skin side reaches the absorbent core 21. The napkin 1 is diffused in the sheet 22 and easily reaches the outside of the napkin 1 in the width direction. In the napkin 1, the excrement attached to the outer side in the width direction from the side end of the absorbent core 21 may leak outside the napkin 1.

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to reduce the risk of excrement leaking to the outside in the width direction while improving the wearability of the absorbent article. To make it happen.

A main invention for achieving the above object includes a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, and an absorber, and a skin side covering the absorber from at least the skin side in the thickness direction of the absorber. A sheet, a liquid-permeable intermediate sheet disposed between the absorber and the skin side sheet, and a non-skin side sheet provided on the non-skin side in the thickness direction of the absorber. An absorbent article, wherein the skin-side sheet has a plurality of through holes penetrating in the thickness direction, and a skin-side folded portion folded back to the non-skin side at both ends in the width direction. The distal end of the skin-side folded portion is a pair of joints arranged in the width direction between the absorber and the non-skin side sheet in the thickness direction, and is connected to the non-skin side sheet. The side end of the absorber and the skin-side folded portion in the width direction are joined. In the cross section along the width direction of the portion where the distance to the side end is the longest, in the width direction, the outer side ends of the pair of joints are arranged outside the side ends of the absorber, The intermediate sheet has, at both ends in the width direction, an intermediate folded portion folded toward the non-skin side, and covers the entire area of the side portion of the absorber. Goods.
Other features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes easy to reduce the possibility that the excrement may leak to the outside of the width direction, while improving the wearability of the absorbent article.

FIG. 1 is a plan view of the sanitary napkin 1 viewed from the skin side. FIG. 2 is a plan view of the napkin 1 as viewed from the non-skin side. FIG. 3 is a schematic cross-sectional view of the napkin 1 taken along the line AA in FIG. FIG. 4 is a view for explaining an end portion in the width direction in the schematic cross-sectional view shown in FIG. FIG. 5 is an enlarged view of a portion Z in FIG. FIG. 6 is a diagram illustrating a portion corresponding to the portion Z of the napkin 1 in another embodiment.

At least the following matters will be made clear by the description in the present specification and the accompanying drawings.
An absorbent body, comprising a longitudinal direction, a width direction, and a thickness direction orthogonal to each other, an absorbent body, a skin side sheet covering the absorbent body from at least the skin side in the thickness direction of the absorbent body, the absorbent body and the skin side sheet And a liquid-permeable intermediate sheet disposed between the non-skin side sheet and the non-skin side sheet provided on the non-skin side in the thickness direction of the absorber, wherein the skin-side sheet Has a plurality of through-holes penetrating in the thickness direction, has a skin-side folded portion folded to the non-skin side at both ends in the width direction, and a tip of the skin-side folded portion The portion, between the absorber and the non-skin side sheet in the thickness direction, a pair of joints arranged in the width direction, is joined to the non-skin side sheet, in the width direction, the The width direction of the portion where the distance between the side edge of the absorber and the side edge of the skin-side folded portion is the longest In the cross section along the width direction, in the width direction, the outer side ends of the pair of joints are arranged outside the side ends of the absorber, and the intermediate sheet is located at both ends in the width direction. In addition, there is provided an absorbent article having an intermediate folded portion folded back to the non-skin side, and covering an entire region of a side portion of the absorber.

  According to such an absorbent article, it is easy to reduce the risk of excrement leaking to the outside in the width direction while improving the wearability of the absorbent article.

  In such an absorbent article, it is preferable that the skin side sheet is a hydrophobic resin sheet.

  According to such an absorbent article, excrement is less likely to remain on the skin-side sheet, and excrement is easily guided to the through-hole.

  In such an absorbent article, it is preferable that the absorber has an aggregate of liquid absorbent fibers, and the liquid absorbent fibers are in contact with the intermediate sheet.

  According to such an absorbent article, it is possible to reduce the possibility that excrement is diffused outside the absorber in the width direction.

  In such an absorbent article, the absorber has an aggregate of liquid absorbent fibers, the absorber has an absorbent polymer sheet on the non-skin side of the aggregate, and the absorbent polymer sheet Is preferably shorter than the length of the assembly in the width direction.

  According to such an absorbent article, it is easy to reduce the risk of excrement leaking outside in the width direction.

  In such an absorbent article, it is preferable that the intermediate sheet covers the entire area of the side portion of the absorbent polymer sheet.

  According to such an absorbent article, it is easy to reduce the risk of excrement leaking outside in the width direction.

  In such an absorbent article, the skin-side sheet, the intermediate sheet, and the aggregate have a linear compressed portion that is compressed in the thickness direction, and the absorbent polymer sheet includes the linear compressed portion. Preferably, the linear squeezed portion is not squeezed by the portion and extends along the longitudinal direction.

  According to such an absorbent article, since the aggregate is squeezed, the absorbent polymer sheet is not squeezed while the excrement is quickly transferred to the lower layer, so that the squeezed absorbent polymer is crushed. The risk of becoming hard is reduced, and the excreta transferred from the aggregate can be quickly absorbed.

  In such an absorbent article, the skin-side sheet includes a plurality of protrusions on the absorber side, and the through-hole is provided at a top of the protrusion, and the skin-side sheet is arranged in the width direction. Having a non-folded portion that is not folded back on the skin side than the absorber and inside the side end of the absorber, the size of the opening on the skin side of the through hole in the non-folded portion. Is preferably larger than the size of the opening on the absorber side.

  According to such an absorbent article, it is possible to easily absorb the excrement from the skin side, while reducing the risk that the excrement returns to the skin side from the absorber.

  In such an absorbent article, of the skin-side sheet, in the width direction, outside the absorber, and in the thickness direction, a skin side from a center of the absorber is defined as a skin-side portion, Of the side sheets, in the width direction, outside the absorber, and when the non-skin side from the center of the absorber in the thickness direction is a non-skin side portion, the skin side portion is a skin side. A non-skin side part having a through-hole; a non-skin side through-hole having a non-skin side through-hole; in the cross-section, a center line in the width direction of the skin-side through hole is outside a side end of the absorber; And, closest to the side end of the absorber, in the cross section, the center line in the width direction of the non-skin side through-hole is outside the side end of the absorber, and, The center line of the skin side through-hole is closest to the side end of the absorber, and It is preferable that the deviation between the center line of the side through-hole.

  According to such an absorbent article, it is possible to reduce the possibility that excrement absorbed from the skin side at the end in the width direction of the napkin is transmitted to the non-skin side.

  In such an absorbent article, in the width direction, a distance from a side end on one side of the absorber to an outer side end on the one side of the pair of joints is the distance of the skin-side folded portion. It is desirable that the distance from one side end to the one side outer side end of the pair of joints be smaller.

  According to such an absorbent article, the end of the absorber is more worn than the distance from one side end of the skin-side folded portion to the outer side end of one side of the pair of joints. It will be easier for you to follow your body.

  In such an absorbent article, in the width direction, a distance from a side end on one side of the absorber to an outer side end on the one side of the pair of joints is the distance of the skin-side folded portion. It is desirable that the distance be equal to or more than the distance from one side end to the one side outer side end of the pair of joints.

  According to such an absorbent article, even if the skin-side folded portion bends toward the skin at the outer side end of the joint, it does not reach the side end of the absorbent body, so that the absorbent article in a state of absorbing excrement can be obtained. On the other hand, even when pressure is applied in the thickness direction, it is possible to reduce the risk that the excrement leaked from the absorber adheres to the skin-side folded portion.

  In the absorbent article, it is preferable that, in the cross section, the tip of the intermediate folded portion is located on the inner side in the width direction than the outer side edge of the pair of joints.

  According to such an absorbent article, it is easy to reduce the risk of excrement leaking outside in the width direction.

=== First Embodiment ===
Hereinafter, the embodiment will be described by taking a sanitary napkin as an example of an absorbent article according to the present invention, but not limited to a sanitary napkin, such as a panty liner or a pad for light incontinence, etc. Any absorbent article that is fixed and used may be used.

<< Configuration of sanitary napkin 1 >>
FIG. 1 is a plan view of a sanitary napkin 1 (hereinafter, referred to as “napkin”) viewed from the skin side. FIG. 2 is a plan view of the napkin 1 as viewed from the non-skin side. FIG. 3 is a schematic sectional view of the napkin 1 taken along line AA in FIG. FIG. 4 is a view for explaining an end portion in the width direction in the schematic cross-sectional view shown in FIG. FIG. 5 is an enlarged view of a portion Z in FIG.

  The napkin 1 has a longitudinal direction, a width direction, and a thickness direction orthogonal to each other. In the longitudinal direction of the napkin 1, the side that contacts the lower abdomen of the user is referred to as “front side”, and the side that contacts the buttocks of the user is referred to as “rear side”. Further, in the thickness direction of the napkin 1, the side in contact with the user's skin is called "skin side", and the opposite side is called "non-skin side". The line XX in the figure is the center line in the width direction. 3 to 5, the dimensions in the thickness direction are not always accurate. Further, for convenience, in FIG. 4, the adhesive HMA except for the main body joint portion 5a is omitted, and in FIG. 5, all the adhesives HMA are omitted.

  The napkin 1 has a pair of wing portions 1W extending from the central portion in the longitudinal direction to both outer sides in the width direction. Hereinafter, in the longitudinal direction of the napkin 1, a portion provided with the wing portion 1W is referred to as a central portion 1B, a portion in front of the central portion 1B is referred to as a front side portion 1A, and a portion behind the central portion 1B is referred to as a rear side portion 1C.

  The napkin 1 has a top sheet 2, a second sheet 3, an absorber 10, a back sheet 4, and a side sheet 5 at the center in the width direction.

  The top sheet 2, the second sheet 3, the absorber 10, the side sheet 5, and the back sheet 4 are stacked in the thickness direction. The top sheet 2, the second sheet 3, the absorber 10, the back sheet 4, and the side sheet 5 are respectively fixed by using an adhesive HMA such as a hot melt adhesive. The adhesive is applied in an arbitrary application pattern over the skin side and the non-skin side of each member, and can be selected from application patterns such as an Ω pattern, a spiral pattern, and a stripe pattern.

  The top sheet 2 is a "skin-side sheet" in which most of the top sheet 2 comes into contact with the wearer's skin in the worn state. The top sheet 2 is a hydrophobic thermoplastic synthetic resin film, for example, a sheet member of polyethylene (PE) or polypropylene (PP). The top sheet 2 has a plurality of substantially circular through holes H penetrating in the thickness direction. By providing the through hole H, the excrement discharged from the vaginal opening during wearing becomes easy to move from the through hole H to the absorber 10, and the possibility that the excrement spreads on the skin side of the top sheet 2 is reduced. .

  The “hydrophobicity” of the top sheet 2 refers to a property that the liquid does not easily spread when the liquid is dropped on the surface of the skin side surface. Preferably, a liquid having a property that the dropped liquid has a contact angle larger than 90 ° is preferable. As long as this hydrophobic state can be ensured, the topsheet 2 may be subjected to a hydrophilic treatment.

  The second sheet 3 is an “intermediate sheet” disposed between the top sheet 2 and the absorber 10. The second sheet 3 is a liquid-permeable sheet member, and examples thereof include an air-through nonwoven fabric and a spunbonded nonwoven fabric.

  The top sheet 2 and the second sheet 3 are wrapped around the widthwise end of the absorber 10 in an integrated state bonded by the adhesive HMA. The top sheet 2, the second sheet 3, and the absorber 10 are joined and fixed by the adhesive HMA to form an absorbent main body 100 integrated with the top sheet 2, the second sheet 3, and the absorber 10. In the adhesive HMA for joining and fixing the members, it is not necessary to apply the adhesive to the entire area. In particular, by adjusting the amount and area of the adhesive applied as the adhesive HMA between the top sheet 2 and the second sheet 3 and the application pattern, the absorbent main body 100 can be connected to a pair of main body joints 5a described later. Flexibility outside in the width direction can be ensured, and touch can be improved.

  The non-skin side surface of the absorbent main body 100 and the skin side surface of the side sheet 5 are joined at the main body joining portion 5a using an adhesive such as hot melt. As shown in FIG. 1, the main body joining portion 5a has a continuous shape along the longitudinal direction, and is disposed at both ends in the width direction at positions symmetrical with respect to the center line XX of the napkin 1 in the width direction. Have been. In the present embodiment, the side sheet 5 is described as a non-skin side sheet, but the back sheet 4 may be a non-skin side sheet, or a combination of the back sheet 4 and the side sheet 5 may be a non-skin side sheet. Good. Further, another sheet member different from the back sheet 4 and the side sheet 5 may be arranged and joined to the top end of the top sheet 2.

  The outermost end in the width direction of the top sheet 2 is the skin side end 2e. The top sheet 2 has skin-side folded portions 2h at both ends in the width direction, and the skin-side end 2e is also the outermost end in the width direction of the skin-side folded portion 2h. The outer side of the absorber 10 in the width direction of the top sheet 2 and the skin side of the center 10c of the absorber 10 in the thickness direction is a skin side portion 2s, which is outside the absorber 10 and has a thickness. The non-skin side from the center of the absorber 10 in the vertical direction is a non-skin side portion 2u. A region composed of the skin-side portion 2s and the non-skin-side portion 2u is also referred to as a skin-side folded portion 2h.

  The outermost end in the width direction of the second sheet 3 is the middle end 3e. The second sheet 3 has an intermediate folded portion 3h at both ends in the width direction, and the intermediate side end 3e is also the outermost end in the width direction of the intermediate folded portion 3h. The intermediate folded portion 3h refers to a portion outside the absorber 10 in the width direction. The lengths of the top sheet 2 and the second sheet 3 in the longitudinal direction are substantially the same. In a state where the top sheet 2 and the second sheet 3 are respectively expanded from the state of the absorbent main body 100, the length in the width direction is shorter in the second sheet 3 than in the top sheet 2. As shown in FIG. 4 and the like, in the state of the absorbent main body 100, the tip of the intermediate folded portion 3h overlaps a part of the main body joint 5a in the thickness direction, and the outer side end 5e of the main body joint 5a. It is located more inward in the width direction.

  The back sheet 4 is a liquid-impermeable sheet member, and may be, for example, a polyethylene (PE) resin film. The back sheet 4 has a plane size larger than that of the absorber 10 and covers the entire plane of the absorber 10. The side sheet 5 is a hydrophobic sheet member, and examples thereof include an air-through nonwoven fabric and a spunbonded nonwoven fabric. The back sheet 4 and the side sheet 5 are located on the non-skin side of the integrated top sheet 2, second sheet 3 and absorber 10.

  The wing portion 1W is formed by a back sheet 4 and a side sheet 5 extending outward from both sides in the width direction of the top sheet 2 and the like. Note that the napkin 1 may be in a form that does not have the wing portion 1W.

  The non-skin side surface of the napkin 1 (that is, the non-skin side surface of the back sheet 4) is provided with a central adhesive portion 8 to which an adhesive is applied. In FIG. 2, ten rectangular central adhesive portions 8 having long sides in the longitudinal direction are arranged at intervals in the width direction of the central adhesive portion 8, but the shape, number, and The arrangement is not limited to this. When the napkin 1 is used, the central adhesive portion 8 is attached to the skin side of clothing such as underwear, so that the napkin 1 is fixed to the underwear or the like.

  Similarly, a wing adhesive portion 9 is provided on the non-skin side surface (non-skin side cotton of the back sheet 4) in the thickness direction of each wing portion 1W. In FIG. 2, the wing adhesive section 9 has a rectangular wing adhesive section 9 having a long side in the longitudinal direction, but the shape, number, and arrangement of the wing adhesive section 9 are not limited thereto. When the napkin 1 is used, the wing portion 1W is bent to the non-skin side, and the wing adhesive portion 9 is attached to the non-skin side surface such as underwear. Thereby, the wing portion 1W is fixed to the underwear or the like.

  The absorber 10 is a member that absorbs excrement and holds it inside. As shown in FIGS. 3 and 4, the absorber 10 has an absorbent core 11 and an absorbent polymer sheet 12. In the absorber 10, the absorbent core 11 is arranged on the skin side, and the absorbent polymer sheet 12 is arranged on the non-skin side. The length of the absorbent core 11 in the width direction is longer than the length of the absorbent polymer sheet 12 in the width direction, and the length of the absorbent core 11 in the longitudinal direction is longer than the length of the absorbent polymer sheet 12 in the longitudinal direction. long.

  The absorbent core 11 has an aggregate 111 formed by molding liquid absorbent fibers into a predetermined shape, and a cover sheet 112 disposed on the non-skin side of the aggregate. Examples of the liquid absorbent fibers of the aggregate 111 include pulp fibers and cellulosic absorbent fibers, and the cover sheet 112 is a liquid-permeable sheet member, and includes an air-through nonwoven fabric, a spunbonded nonwoven fabric, and the like. it can. The assembly 111 is fixed to the cover sheet 112 with an adhesive such as hot melt. It is preferable that the cover sheet 112 has substantially the same length as the length of the aggregate 111 in the longitudinal direction, and has substantially the same length as the width of the aggregate 111 in the width direction. In the present embodiment, the absorbent core 11 is formed in a substantially hourglass shape in plan view, and has a shape that is constricted at a central portion in the longitudinal direction, but the shape of the absorbent core 11 is not limited to this. The absorbent core 11 having a predetermined shape such as a rectangle can be used.

  Note that the absorbent core 11 preferably does not have a sheet such as a liquid-permeable tissue on the skin side surface of the aggregate, and the liquid absorbent fibers of the aggregate 111 are in contact with the second sheet 3. Generally, in a liquid permeable sheet such as a tissue, the liquid is easily diffused in a plane direction. Therefore, the liquid permeable sheet is not provided on the skin side surface of the absorbent core 11, so that the crotch portion in contact with the wearer's vaginal opening. It is possible to reduce the risk that the excreted matter that has been absorbed is diffused on the skin side of the absorbent core 11 and the excrement leaks from the outside in the width direction of the napkin 1.

  The absorptive polymer sheet 12 is a sheet-like absorber in which a highly absorptive polymer 121 (so-called SAP) or the like, which is a liquid absorptive granular material, is sandwiched from the skin side and the non-skin side by a liquid permeable sheet 122 such as a tissue. is there.

  As shown in FIG. 1 and the like, the outer side of the absorbent main body 100 in the width direction from the pair of main body joints 5 a is not fixed to the side sheet 5. Therefore, in the wearing state, even when the wing portion 1W is fixed to the clothes, the state can be brought into contact with the body of the wearer. Thereby, the wearer can easily follow the movement of the wearer's crotch while the wing portion 1W, that is, the napkin 1 is fixed to the clothes, and the wearability of the napkin 1 is improved. Can be.

  In addition, the napkin 1 uses a hydrophobic resin sheet as the top sheet 2 in order to reduce the possibility of excrement reaching the end portion in the width direction of the absorbent main body 100. The hydrophobic resin sheet allows the excrement to fall from the plurality of through holes H provided in the top sheet 2 toward the absorber 10 in the thickness direction while preventing the excrement from being spread in a planar manner. To facilitate movement to the absorber 10. This makes it easier for the excrement to be retained by the absorber 10 more quickly.

  Furthermore, when a force is applied to the absorber 10 in the thickness direction, for example, when the wearer's body pressure is applied to the thickness direction of the napkin 1 such as a state in which the wearer is sitting while wearing. In the above, the following configuration is provided so that the absorbent body 10 is not crushed and the excrement fixed to the absorbent body 10 does not leak outside in the width direction of the napkin 1.

  AA in FIG. 1 is the wing center AA in the longitudinal direction of the wing portion 1W, and the distance between the side edge of the absorber 10 and the skin side edge 2e of the skin side folded back portion 2h in the width direction. The longest part. Since the length of the absorbent core 11 in the width direction is longer than the length of the absorbent polymer sheet 12 in the width direction, the side end of the absorber 10 is the side end 11e of the absorbent core 11 in the width direction. is there.

  As shown in FIG. 4 and the like, in the cross section of the wing center AA, the outer side end 5e of the pair of main body joints 5a in the width direction is arranged outside the side end 11e of the absorbent core 11 in the width direction. ing. At this time, the second sheet 3 having the intermediate folded portion 3h covers the entire side surface of the end of the absorbent core 11. In addition, the side part of the absorbent core 11 means the side part in the width direction of the absorbent core 11, and the 2nd sheet | seat 3 has covered the whole area of the side surface of the end part in the width direction of the absorbent core 11. However, the second sheet 3 or the top sheet 2 may cover the side surface of the longitudinal end of the absorbent core 11.

  Accordingly, even when excrement leaks from the side of the absorbent core 11 when a force in the thickness direction is applied to the absorbent body 10 in a state where the excrement is absorbed, first, the absorbent core Since the second sheet 3 covering the entire area of the side portion 11 absorbs excrement and the excrement leaked from the second sheet 3 can be absorbed in the top sheet 2, the excrement is spread over the width of the napkin 1. The risk of leakage from the end in the direction can be reduced. In particular, by covering the entire area of the side portion of the absorbent core 11, the second sheet 3 and the top sheet 2 are respectively arranged in a bag shape with respect to the side portion of the absorbent core 11. For this reason, the excrement can be easily retained inside the second sheet 3 or the top sheet 2, and the possibility that the excrement leaks from the napkin 1 can be easily reduced.

  Similarly, it is preferable that the second sheet 3 covers the entire side portion of the absorbent polymer sheet 12. Still more preferably, it is good to be located in the width direction inside from outside side end 5e of main part joint part 5a. That is, it is preferable that the second sheet 3 covers the entire side of the absorber 10. Thereby, the excrement leaked from the side portion of the absorbent polymer sheet 12 is first easily retained by the second sheet 3 inside the second sheet 3, and further, the excrement is kept inside the top sheet 2 located outside. In this case, the risk of leakage to the outside in the width direction of the napkin 1 can be further reduced. The side portion of the absorbent polymer sheet 12 refers to the entire region of the side surface of the end portion in the width direction of the absorbent polymer sheet 12, and the second sheet 3 corresponds to the entire region of the side surface of the end portion in the width direction of the absorbent polymer sheet 12. Is covered. However, the second sheet 3 or the top sheet 2 may cover the side surface of the longitudinal end of the absorbent polymer sheet 12.

  Further, it is preferable that the excrement once stored in the absorber 10 is prevented from returning to the skin side of the top sheet 2 by the through hole H. The plurality of through holes H have substantially the same shape and substantially the same size, and are arranged in a staggered manner over substantially the entire area of the top sheet 2. Each through hole H has a convex portion p on the absorber 10 side. At this time, a through hole H is provided at the top of the convex portion p. That is, the top sheet 2 has a concave-convex shape including a convex portion p that can contact the second sheet 3 and a concave portion r that does not contact the second sheet 3. At this time, from the size of the through hole H on the absorber 10 side, specifically, the diameter (length in the width direction) d, the size of the through hole H on the opposite side to the absorber 10, specifically, the diameter Preferably, D is large. In particular, in the non-folded portion N of the top sheet 2 that is not folded back in the width direction inside the side end 11 e of the absorbent core 11 and on the skin side of the absorber 10, the through hole on the absorber 10 side. It is preferable that the diameter D of the through hole H on the skin side opposite to the absorber 10 is larger than the diameter d of H. By increasing the diameter D of the skin side through-hole H in the non-folded portion N, it becomes easier to put the excrement excreted on the skin side in the wearing state into the through-hole H, and the excrement can be absorbed more quickly. 10 makes it easier to absorb. On the other hand, by making the diameter d of the through hole H on the absorber 10 side smaller, it is easier to reduce the possibility that the excrement already absorbed by the absorber 10 returns to the skin side surface of the top sheet 2. For example, when a force is applied to the absorbent body 10 of the napkin 1 in the thickness direction, even when the absorbent body 10 is crushed and the excreted matter that is once absorbed is likely to return to the skin side surface, the through-hole is formed. Since the diameter d of the H absorber 10 on the side of the absorber 10 is small, the entrance through which the excrement passes is small, so that the excrement can hardly reach the skin side surface of the top sheet 2.

  In addition, as shown in FIG. 1, by making the length of the absorbent polymer sheet 12 in the width direction shorter than the length of the absorbent core 11 in the width direction, excrement leaks to the outside in the width direction of the napkin 1. It is possible to further reduce the risk of being lost. When the superabsorbent polymer 121 is sandwiched between liquid-permeable sheets 122 such as a tissue, as in the case of the absorbent polymer sheet 12, the excrement may be diffused outward in the width direction by the liquid-permeable sheet 122. . Even in such a case, by providing the absorbent core 11 having a longer length in the width direction than the liquid-permeable sheet 122 included in the absorbent polymer sheet 12, the absorbent core 11 is moved in the width direction of the absorbent polymer sheet 12. Since the excrement reaching the outside can be absorbed by the absorbent core 11, the possibility that the excrement leaks to the outside in the width direction of the napkin 1 can be reduced.

  Furthermore, since the length of the absorbent polymer sheet 12 in the width direction is shorter than the length of the absorbent core 11 in the width direction, the state in which excreta is present on the skin side surface of the napkin 1 can be easily reduced. Generally, when the absorbent body 10 having the absorbent core 11 and the absorbent polymer sheet 12 absorbs excrement, the absorbent core having a higher absorbent polymer than the absorbent core 11 having the liquid absorbent fiber is used. In many cases, the polymer sheet is in a state of storing more excrement. When a force is applied to the absorber 10 in the thickness direction, the excrement retained on the absorbent polymer sheet 12 may move to the skin side. In this regard, since the absorbent core 11 having a greater width in the width direction than the absorbent polymer sheet 12 is provided on the skin side, the excrement moved from the absorbent polymer sheet 12 to the skin side can be absorbed by the absorbent core 11. It can be absorbed to make it difficult to reach the skin side of the top sheet 2. This makes it easier to reduce the state in which excrement is present on the surface of the top sheet 2, so that the wearer can easily reduce discomfort such as stickiness felt on the skin during wearing.

  As shown in FIG. 1, the napkin 1 preferably has a linear pressing portion E along the longitudinal direction. The linear pressing portion E is a linear pressing portion in which the top sheet 2, the second sheet 3, and the absorbent core 11 are pressed in the thickness direction, and the fiber density in each member is higher than the portion not pressed. Is getting higher. Therefore, the excrement that has reached the linear pressing part E is easily moved in the thickness direction depending on the current state of the capillary. In other words, the excrement absorbed in the portion of the napkin 1 that comes into contact with the vaginal opening of the wearer is diffused in the width direction and reaches the linear compressed portion E, whereupon the excrement is absorbed to the absorbent core 11 in the thickness direction. Easy to move. In addition, since the linear pressing portion E extends along the longitudinal direction, excrement is easily diffused along the linear pressing portion E. On the other hand, since the absorbent polymer sheet 12 is not squeezed in the thickness direction, the risk that the absorbent polymer is crushed and hardened by squeezing is reduced, and the excrement transferred from the absorbent core 11 is quickly absorbed. can do.

  As shown in FIG. 4, the distance Da from one side end of the absorber to the side end 5e of the main body joining portion 5a is the side end 2e which is the outermost end on the one side of the skin-side folded portion 2h. Is preferably shorter than the distance Dh from the side to the side end 5e of the main body joint 5a (Da <Dh). As a result, the distance Da from one side end of the absorber to the side end 5e of the main body joining portion 5a is changed from the side end 2e which is the outermost end on the one side of the skin side folded portion 2h to the main body joining portion 5a. The absorbent main body 100 can be made to easily follow the movement of the wearer's body as compared with the case where the distance is equal to or longer than the distance Dh to the side end 5e. That is, by making the soft region wider in the absorbent main body 100, the absorbent main body 100 is easily moved flexibly, and the skin contact with the wearer is also improved.

  The top sheet 2 has a plurality of through holes H. Of the top sheet 2, the skin side portion 2s has a skin side through hole Hs, and the non-skin side portion 2u has a non-skin side through hole Hu. As shown in FIG. 5, in the cross section of the wing center AA, the center line Cs in the width direction of the skin-side through-hole Hs is located outside the side end 11e of the absorbent core 11 (the absorber 10), and , Closest to the side end 11 e of the absorbent core 11. Similarly, the center line Cu in the width direction of the non-skin side through-hole Hu is outside the side end 11e of the absorbent core 11 (the absorber 10) and is closest to the side end 11e of the absorbent core 11. are doing. It is preferable that the center line Cs and the center line Cu are shifted. Specifically, in FIG. 5, the center line Cs is provided inside the center line Cu in the width direction. That is, since the skin side through-hole Hs and the non-skin side through-hole Hu do not completely overlap in the thickness direction, even when excrement is absorbed from the skin side at the end of the absorbent main body 100, the excrement is penetrated. The risk of passing through the hole H can be reduced.

=== Other Embodiments ===
As described above, the embodiments of the present invention have been described. However, the above embodiments are for the purpose of facilitating the understanding of the present invention, and are not intended to limit and interpret the present invention. Further, the present invention can be changed or improved without departing from the gist thereof, and it goes without saying that the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, a hydrophobic thermoplastic synthetic resin film is used as the top sheet 2, but is not limited thereto. For example, a hydrophilic sheet member such as a nonwoven fabric may be used. Even when a hydrophilic sheet member is used as the top sheet 2, the provision of the through holes H facilitates the absorption of excrement into the absorber 10.

  In the above-described embodiment, the convex portion p and the through-hole H are provided over substantially the entire area of the top sheet 2; For example, the convex portion p and the through hole H may be provided only on the crotch portion which abuts on the vaginal opening of the wearer during wearing and absorbs excrement first. Even in such a case, the excrement absorbed in the crotch portion can be easily absorbed by the absorber 10 before diffusing in the width direction, so that the danger of excretion leaking from the outer side in the width direction of the napkin 1 is reduced. be able to.

  Further, in the above-described embodiment, the tip of the intermediate folded portion 3h overlaps a part of the main body joint 5a in the thickness direction, but is not limited thereto. FIG. 6 is a diagram illustrating a portion corresponding to the portion Z of the napkin 1 in another embodiment. As shown in FIG. 6, the tip of the intermediate folded portion 3h does not overlap with a part of the main body joint 5a in the thickness direction, and the tip of the intermediate folded portion 3h is wider than the side end 5e of the main body joint 5a in the width direction. May be located outside of the. Since the second sheet 3 does not overlap with the main body joint 5a, the rigidity at the widthwise ends of the main body joint 5a and the integrated top sheet 2, second sheet 3, and absorber 10 can be further reduced. . This makes it easier for the integrated top sheet 2, second sheet 3, and absorber 10 to follow the wearer's body in a state where the napkin 1 is fixed to the garment in the wearing state. Is improved.

  In the above-described embodiment, the pair of main body joints 5a has a continuous shape along the longitudinal direction of the napkin 1 and is provided at a position symmetrical with respect to the center line XX in the width direction of the napkin 1. I can't. The main body joining portion 5a may be provided in an intermittent state, or may be provided at a position asymmetric with respect to the center line XX.

  Furthermore, in the above-described embodiment, the distance Da from one side end of the absorber to the side end 5e of the main body joint 5a is the side end 2e which is the outermost end on the one side of the skin-side folded portion 2h. Is shorter than the distance Dh from the front end to the side end 5e of the main body joint 5a (Da <Dh), but is not limited to this. A distance Da from one side end of the absorber 10 to one outer side end 5e of the main body joining portion 5a is one side of the main body joining portion 5a from one side end 2e of the skin-side folded portion 2h. It may be longer than the distance Dh to the outer side end 5e (Da ≧ Dh). Even if the skin-side folded portion 2h is bent toward the skin at the outer side end 5e of the main body joining portion 5a, the skin-side folded portion 2h does not reach the side end 11e of the absorbent core 11. With such a configuration, even when pressure is applied in the thickness direction from the skin side to the napkin 1 in a state where the excrement is absorbed, the excrement leaking from the absorbent core 11 to the skin side is reduced. The risk of adhering to the side folded portion 2h can be reduced. Thereby, it is possible to reduce a possibility that the excrement attached to the skin-side folded portion 2h leaks to the outside in the width direction of the napkin 1.

  In the above-described embodiment, the absorber 10 in which the absorbent core 11 and the absorbent polymer sheet 12 are stacked in the thickness direction is used, but the invention is not limited thereto. For example, as the absorber 10, only the absorbent core 11 or only the absorbent polymer sheet 12 may be used. Further, the absorbent core 11 may have an absorbent polymer.

Reference Signs List 1 napkin (absorbent article), 1A front side, 1B center, 1C rear side, 1W wing, 2 top sheet (skin side sheet), 2h skin side folded back part, 2e skin side end, 2s skin side part 2u non-skin side part, 3 second sheet (intermediate sheet), 3h intermediate folded part, 3e intermediate side end, 4 back sheet, 5 side sheet (non-skin side sheet), 5a main body joint (joint), 8 center Adhesive part, 9 wing adhesive part, 10 absorber, 10a absorber joint, 10c center, 100 absorbent main body, 11 absorbent core (absorber, aggregate), 11e side end, 111 aggregate, 112 cover sheet, 12 absorbent polymer sheet (absorber), 121 super absorbent polymer, 122 liquid permeable sheet, E linear pressing part, H through hole, HMA adhesive, N non-folding part, p convex part

Claims (11)

With a longitudinal direction, a width direction, and a thickness direction orthogonal to each other,
An absorber,
A skin-side sheet covering the absorber from at least the skin side in the thickness direction of the absorber,
A liquid-permeable intermediate sheet disposed between the absorber and the skin-side sheet,
An absorbent article comprising a non-skin side sheet provided on the non-skin side in the thickness direction of the absorber,
The skin-side sheet has a plurality of through-holes penetrating in the thickness direction, and at both ends in the width direction, has a skin-side folded portion folded to the non-skin side,
The distal end of the skin-side folded portion is joined to the non-skin side sheet at a pair of joints arranged in the width direction between the absorber and the non-skin side sheet in the thickness direction. ,
In the width direction, in the cross section along the width direction of the portion where the distance between the side end of the absorber and the side end of the skin-side folded portion is the longest,
In the width direction, outer side ends of the pair of joints are arranged outside the side ends of the absorber,
The intermediate sheet has, at both ends in the width direction, an intermediate folded portion folded toward the non-skin side, and covers the entire area of the side portion of the absorber. Goods. The absorbent article according to claim 1, wherein
The said skin side sheet | seat is a hydrophobic resin sheet, The absorbent article characterized by the above-mentioned. The absorbent article according to claim 1 or 2,
The absorber has an aggregate of liquid absorbent fibers,
An absorbent article, wherein the liquid absorbent fibers are in contact with the intermediate sheet. The absorbent article according to any one of claims 1 to 3, wherein
The absorber has an aggregate of liquid absorbent fibers,
The absorber has an absorbent polymer sheet on the non-skin side of the aggregate,
An absorbent article, wherein the length in the width direction of the absorbent polymer sheet is shorter than the length in the width direction of the aggregate. The absorbent article according to claim 4,
The absorbent article, wherein the intermediate sheet covers the entire area of the side of the absorbent polymer sheet. It is an absorbent article according to claim 4 or 5,
The skin-side sheet, the intermediate sheet, and the aggregate having a linear pressing portion pressed in the thickness direction,
The absorbent polymer sheet is not pressed by the linear pressing unit,
The said linear pressing part is along the said longitudinal direction, The absorbent article characterized by the above-mentioned. The absorbent article according to any one of claims 1 to 6, wherein
The skin-side sheet includes a plurality of protrusions on the absorber side,
The through hole is provided at the top of the projection,
The skin-side sheet has a non-folded portion that is not folded back on the skin side than the absorber, in the width direction, inside the side end of the absorber,
In the non-folded portion, the size of the opening on the skin side of the through hole is larger than the size of the opening on the absorber side. It is an absorbent article according to claim 7,
Of the skin-side sheet, in the width direction, outside the absorber, and the skin side from the center of the absorber in the thickness direction as a skin-side portion,
Of the skin-side sheet, in the width direction, outside the absorber, and when the non-skin side from the center of the absorber in the thickness direction is a non-skin side portion,
The skin-side portion has a skin-side through-hole,
The non-skin side portion has a non-skin side through-hole,
In the cross section, the center line in the width direction of the skin-side through-hole is outside the side end of the absorber, and is closest to the side end of the absorber,
In the cross section, the center line in the width direction of the non-skin side through-hole is outside the side end of the absorber, and is closest to the side end of the absorber,
An absorbent article, wherein a center line of the skin-side through-hole is shifted from a center line of the non-skin-side through-hole. It is an absorbent article according to any one of claims 1 to 8,
In the width direction,
The distance from one side end of the absorber to the outer side end of the one side of the pair of joints,
An absorbent article, wherein the distance is smaller than a distance from the one side end of the skin-side folded portion to the one side outer end of the pair of joints. It is an absorbent article according to any one of claims 1 to 8,
In the width direction,
The distance from one side end of the absorber to the outer side end of the one side of the pair of joints,
An absorbent article, wherein the distance is equal to or greater than a distance from the one side end of the skin-side folded portion to the one outer side end of the pair of joints. The absorbent article according to any one of claims 1 to 10, wherein
In the cross section,
An absorptive article wherein the tip of the intermediate folded portion is located on the inner side in the width direction from the outer side end of the pair of joints.

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