JP6091555B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a sanitary napkin.

  Absorbent articles such as sanitary napkins, panty liners, and incontinence pads for absorbing menstrual blood and cages are known. Among the absorbent articles, sanitary napkins are particularly pressed against the wearer's body by underwear and fit to the wearer's body (Patent Document 1 below). An absorbent article such as a sanitary napkin has a top sheet, a back sheet, and an absorbent body. The absorber is provided between the top sheet and the back sheet. The absorber has a middle and high portion protruding in a convex shape on the skin contact surface side. The middle-high portion is a part of the absorber that is thicker than the region other than the middle-high portion. The middle and high portions are separately provided in front and rear of the absorbent article. A rigid region is provided between the front middle-high portion and the rear middle-high portion. A rigid area | region is a part which compressed the absorber by embossing. The sanitary napkin is folded and individually wrapped. One of the folding positions for folding the sanitary napkin passes over a rigid region embossed with the absorbent body.

JP 2010-115368 A

  A sanitary napkin, especially a night sanitary napkin, may be used in a posture lying on its back. In the posture in which the wearer is lying on his back, a gap is easily formed between the buttocks and the absorbent article. Specifically, since the wearer's buttocks are crushed by the floor in the sleeping position, the rear side area of the absorbent article is moved toward the crotch area (excretion opening contact area) of the absorbent article by the force from the buttocks May move slightly. Thereby, distortion arises in the front-back direction in the vicinity of the region between the excretory opening contact region and the rear side region. Due to this distortion, the absorbent article may be deformed so as to separate from the buttocks in the vicinity of the region between the excretory opening contact region and the rear region.

  In particular, the sanitary napkin described in Patent Document 1 includes a rigid region obtained by compressing the absorbent body by embossing in a region corresponding to the region between the excretory opening contact region and the rear region, and a folding position passing through the rigid region. Have. Accordingly, the absorbent article is provided with a crease that is convex in the direction away from the wearer's skin at this folding position. Therefore, in the posture in which the wearer is sleeping, the absorbent article is easily deformed so as to be further away from the buttocks in the vicinity of the region between the excretory opening contact region and the rear side region.

  If there is a gap between the buttocks and the absorbent article, body fluid (for example, menstrual blood) may travel through the body to the back side and leak from behind the absorbent article. In addition, the wearer may feel that menstrual blood is transmitted through the body and feel anxious.

  Therefore, an absorbent article that can suppress body fluid from being transmitted through the body to the back side in a sleeping position and reducing the wearer's anxiety is desired.

  An absorbent article according to one aspect includes a front-rear direction and a width direction orthogonal to each other, an excretion opening contact area facing the excretion opening of the wearer, and a rear side area located on the rear side of the excretion opening contact area An absorbent body disposed at least in the excretory opening contact area and the rear side area, a skin sheet provided on the skin surface side of the absorber, and provided on a non-skin surface side of the absorber. A non-skin surface sheet, and the absorbent body has a first low weight area extending in the width direction between the excretory opening contact region and the rear side region, and the skin surface The sheet has a non-joining area that is not joined to a member provided on the non-skin surface side of the skin sheet, from the first low weight area to the rear area of the first low weight area. The absorbent article has an area on the rear side of the first low weight area in the non-bonded area in the width direction. It extends along and has a fold line folding the absorbent article.

  According to the said aspect, it can suppress that a bodily fluid is transmitted to a back | dorsal back direction in a sleeping posture, and a wearer's anxiety can be reduced.

It is a top view of an absorptive article in one embodiment. It is a top view of the absorbent article seen from the opposite side to FIG. It is sectional drawing of the absorbent article along the 3A-3A line | wire of FIG. It is a top view of the absorber in one embodiment. It is a perspective view of the absorbent article in use. It is typical sectional drawing in alignment with the 6A-6A line | wire of FIG. 1 of the absorbent article in use. It is typical sectional drawing in alignment with the 7A-7A line | wire of FIG. 1 of the absorbent article in use. It is typical sectional drawing along the 3A-3A line | wire of FIG. 1 of the absorbent article in use. It is a top view of the absorbent article folded along the fold line FL of FIG. It is a typical side view of the absorbent article folded along the fold lines F1-F3 of FIG.

  Hereinafter, an absorbent article according to an embodiment will be described with reference to the drawings. The absorbent article may be any absorbent article, such as a panty liner (corimono sheet), a sanitary napkin, or an incontinence pad. In the following embodiments, a disposable sanitary napkin will be described as an example of an absorbent article.

  In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic and ratios of dimensions and the like may differ from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, the part from which the relationship and ratio of a mutual dimension differ also in between drawings may be contained.

(1) Overall Configuration of Absorbent Article FIG. 1 is a plan view of the absorbent article in one embodiment. FIG. 2 is a plan view of the absorbent article as seen from the side opposite to FIG. FIG. 3 is a cross-sectional view of the absorbent article taken along line 3A-3A in FIG.

  The absorbent article 1 has a front-rear direction L, a width direction W, and a thickness direction T. The front-rear direction L is a direction extending from the front side (abdomen side) of the wearer to the rear side (back side), or a direction extending from the rear side of the wearer to the front side. The width direction W is a direction orthogonal to the front-rear direction L. The thickness direction T is a direction extending from the wearer's skin side T1 to the non-skin side T2, and is a direction orthogonal to the front-rear direction L and the width direction W. The skin side T1 corresponds to the side facing the wearer's skin during use. The non-skin surface side T2 corresponds to the side opposite to the skin surface side T1, that is, the side facing away from the wearer's skin during use.

  The absorbent article 1 has an excretion opening contact area S1, a front side area S2, and a rear side area S3. The excretion opening contact area S1 is an area facing the excretion opening (for example, vaginal opening) of the wearer. When the absorbent article is attached to the underwear, the excretion opening contact area S1 is located in the crotch part of the underwear. That is, the excretion opening contact area is an area disposed between the wearer's crotch, that is, between the wearer's legs.

  The front side area S2 is located in front of the excretory opening contact area S1. The front edge of the front region S2 defines the front edge of the absorbent article 1. The rear side region S3 is located behind the excretory opening contact region S1. The rear edge of the rear side region S3 defines the rear edge of the absorbent article 1. The length in the front-rear direction L of the rear side region S3 may be longer than the length in the front-rear direction L of the excretory opening contact region S1.

  A wing 3 described later may be provided in the excretory opening contact area S1. Further, a hip flap 4 swelled outward in the width direction W may be provided in the rear side region S3.

  The front edge of the wing 3 is defined by the root of the wing 3 and corresponds to a portion located on the front side of the two portions recessed most inside in the width direction W. The front edge of the wing 3 may define a boundary between the excretory opening contact area S1 and the front side area S2. The rear edge of the wing 3 is defined by the root of the wing 3, and corresponds to a portion located on the rear side of the two portions that are recessed most in the width direction W. The rear edge of the wing 3 may be located between the excretory opening contact area S1 and the rear side area S3. Here, a region between the front end edge of the wing 3 and the rear end edge of the wing 3 in the front-rear direction L is referred to as a “wing region”. In the absorbent article having a wing, the excretion opening contact area S1 is substantially the same area as the wing area. Therefore, it should be noted that in the present specification, the term “excretion opening contact area S1” can be read as “wing area”.

  The absorbent article 1 includes a skin sheet 10, a non-skin sheet 20, and an absorber 30. The skin surface sheet 10 is provided on the skin surface side T <b> 1 from the absorbent body 30. The non-skin surface sheet 20 is provided on the non-skin surface side T2 with respect to the absorber 30. The absorber 30 is provided between the skin sheet 10 and the non-skin sheet 20.

  The skin sheet 10 may have a top sheet 11, a side sheet 12, and a second sheet 13. The top sheet 11 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 11 covers the central portion of the absorber 30 in the width direction W. The topsheet 11 may extend in the front-rear direction L from the front side region S2 to the rear side region S3.

  The top sheet 11 is made of any sheet-like material having a structure that allows liquid to permeate, such as a nonwoven fabric, a woven fabric, a perforated plastic sheet, and a mesh sheet. Either natural fibers or chemical fibers can be used as the woven or non-woven material.

  The side sheet 12 covers the outer edge of the top sheet 11 in the width direction W, and extends outward in the width direction W from the top sheet 11. In addition, in this embodiment, although the absorbent article 1 has the side sheet 12, the absorbent article 1 does not need to have the side sheet 12. In this case, the top sheet 11 may cover the entire absorber 30.

  The side sheet 12 can be made of the same material as the top sheet 11. However, in order to prevent the body fluid adhering to the top sheet 11 from getting over the side sheet 12 and leaking outside the absorbent article 1 in the width direction W, the side sheet 12 has hydrophobicity or water repellency. It is preferable to have. The side seat 12 may be disposed on the outer edge of the absorbent body 30 in the width direction W, the wing 3 and the hip flap 4.

  The second sheet 13 is provided between the top sheet 11 and the absorbent body 30 at least in a non-bonding region 46 described later. The second seat 13 may extend in the front-rear direction L from the front side region S2 to the rear side region S3. Instead, the second sheet 13 may be provided only in the non-joining region 46 described later. In addition, the second sheet 13 is preferably narrower in the width direction W than the width of the absorbent core 31 described later.

  The second sheet 13 is a liquid-permeable sheet that transmits liquid such as body fluid. Preferably, the hydrophilicity of the second sheet 13 is higher than the hydrophilicity of the top sheet 11. Specifically, the hydrophilicity of the second sheet 13 only needs to be higher than the hydrophilicity of the topsheet 11 at least in the non-bonding region 46 described later. The second sheet 13 can be made of the same material as the top sheet 11.

  The non-skin surface sheet 20 is a liquid-impermeable sheet. The non-skin sheet 20 may be a polyethylene sheet, a laminated nonwoven fabric mainly composed of polypropylene, a breathable resin film, a spunbond, or a sheet in which a breathable resin film is bonded to a nonwoven fabric such as spunlace. it can.

  The absorber 30 is disposed at least in the excretory opening contact area S1 and the rear side area S3. Moreover, the absorber 30 may extend from the excretory opening contact area S1 to the front side area S2. The absorber 30 includes an absorbent core 31 including an absorbent material that absorbs liquid, and a core wrap 32 that wraps the absorbent core 31. The core wrap 31 only needs to cover the absorbent core 31 at least on the skin surface side of the absorbent core 31. As a specific example, the core wrap 32 may include a sheet disposed on the skin surface side with respect to the absorbent core 31 and a sheet disposed on the non-skin surface side with respect to the absorbent core 31. The skin-side sheet and the non-skin-side sheet constituting the core wrap 32 may be composed of the same sheet. The absorbent material constituting the absorbent core 31 can be formed from, for example, hydrophilic fibers, pulp, and superabsorbent polymer (SAP). The core wrap 32 can be comprised, for example from a nonwoven fabric or a tissue sheet.

  Instead of the above embodiment, the absorbent body 30 may not have the core wrap 31. In this case, the absorbent core 31 only needs to be covered with the skin sheet 10 and the non-skin sheet 20.

  As described above, the absorbent article 1 has the wing 3 and the hip flap 4. The wing 3 and the hip flap 4 extend outward in the width direction W from the outer edge of the absorbent core 31 in the excretory opening contact region S1.

  The wing 3 and the hip flap 4 may be configured by stacking the side sheet 12 and the non-skin surface sheet 20. The wing 3 is configured to be folded back to the non-skin surface sheet 20 side. The wing 3 is folded back to the non-skin surface side of the crotch portion of the underwear during use.

  The hip flap 4 is located on the rear side of the wing 3 and is provided in the rear side region S3. The hip flap 4 is not folded back during use, and is disposed between the underwear and the wearer's buttocks. In the present embodiment, the hip flap 4 is not provided with an absorbent material. Alternatively, the hip flap 4 may be provided with an absorbent material.

(2) Detailed structure of absorber Next, with reference to FIGS. 1-4, the structure of the absorber 30 is demonstrated more concretely. FIG. 4 is a plan view of the absorber 30 in one embodiment. The absorber 30 has the middle-high part 33 at least in the excretion opening contact area S1. The middle / high part 33 may extend from the excretory opening contact area S1 to the front side area S2. The middle / high portion 33 is disposed across the center line CL in the excretion opening contact region S1. The middle-high portion 33 means a region where the thickness of the absorbent core 31 is thicker than the thickness of the absorbent core 31 in the region around the middle-high portion 33. The basis weight of the absorbent material of the middle-high portion 33 may be higher than the basis weight of the absorbent core 31 in a region other than the middle-high portion 33 in the excretory opening contact region S1. The middle-high portion 33 may be adjacent to a first low weight area 41 described later. Preferably, the absorption core 31 on the rear side of the first low weight area 41 is thinner than the thickness of the middle-high portion 33. More preferably, the absorption core 31 of the entire rear side region S3 is thinner than the thickness of the middle-high portion 33. The middle-high part 33 has the thickest highest part and the inclined part connected to the highest part. The inclined portion may be disposed between the highest portion and a front pressing portion described later, and between the highest portion and the first low weight area 41.

  The absorber 30 may have a first low weight area 41, a second low weight area 42, and a third low weight area 43. Here, the “low weight area” means a region composed of the absorbent core 31 having a lower basis weight than the surrounding absorbent core 31 or a region not having the absorbent core 31. As described above, the “low weight area” is a concept including an area where the weight of the absorbent core 31 is zero.

The weight of the absorbent core 31 in the low weight areas 41 to 43 is preferably 150 g / m ² or less, and more preferably 100 g / m ² or less. Moreover, it is further preferable that the weight of the absorbent core 31 in the low weight areas 41 to 43 is substantially 0 g / m ² . Moreover, it is preferable that the fabric weight of the absorption core 31 in the low fabric weight area | regions 41-43 is 60% or less of the fabric weight of the absorption core (except medium-high portions) around the low fabric weight areas 41-43, and is 50% or less. It is more preferable.

  Even when the “low weight area” is an area that does not have the absorbent core 31, the core wrap 32 may wrap the entire absorbent core 31 across the low weight area. In this case, even if the absorbent core 31 is divided into a plurality of regions, the absorbent body 30 is integrally formed by the core wrap 32.

  The first low-weight area 41, the second low-weight area 42, and the third low-weight area 43 are boundaries where the rigidity of the absorbent body 30 changes. Therefore, the first low weight area 41, the second low weight area 42, and the third low weight area 43 correspond to areas where the absorber 30 is easily deformed.

  The first low weight area 41 extends in the width direction W between the excretion opening contact area S1 and the rear side area S3. The first low weight area 41 may extend linearly along the width direction W or may extend along a curve along the width direction W.

  The first low weight area 41 may be provided on the rear side of the wing 3 center in the front-rear direction L and on the front side of the rear edge of the absorber 30. The first low weight area 41 may be provided across the rear end edge of the wing 3 in the front-rear direction L.

  In the present embodiment, the first low weight area 41 has a curved shape in which the center in the width direction W of the first low weight area 41 protrudes rearward. More specifically, the center of the first low weight area 41 in the width direction W is located behind the outer edge of the first low weight area 41. The length in the front-rear direction L of the first low weight area 41 may be constant or may not be constant.

  Preferably, the length of the first low weight area 41 in the width direction W is 25 mm or more. Thereby, it can suppress that the motion of the absorber 30 in the excretion opening | mouth contact | abutting area S1 is transmitted to the back side area S3. More preferably, the first low weight area 41 extends from one end of the absorber 30 to the other end in the width direction W. In this case, the front edge of the first low weight area 41 may define the rear edge of the excretory opening contact area S1, and the rear edge of the first low weight area 41 defines the front edge of the rear area S3. It may be specified.

  The length of the first low weight area 41 in the front-rear direction L is preferably 10 mm or more and 50 mm or less, more preferably 10 mm or more and 30 mm or less, at the position of the center line CL of the absorbent article 1.

  The second low weight area 42 extends in the front-rear direction L along the center line CL of the absorbent article in the rear side area S3. The second low weight area 42 may extend linearly in the front-rear direction L. The second low weight area 42 is preferably connected to the first low weight area 41.

  The rear end edge of the second low weight area 42 may be located on the rear side of the center of the rear side area S3 in the front-rear direction. Further, the rear end edge of the second low weight area 42 may be located on the rear side of the position P1 of the maximum width of the hip flap 4. The length in the front-rear direction L of the second low weight area 42 is preferably 120 mm or more, and more preferably 150 mm or more. Preferably, the length of the second low weight area 42 in the width direction W is not less than 1 mm and not more than 15 mm. In the cross section along the front-rear direction L of the wearer's body, a groove (crack) between the hips exists in a region from the back to the caudal bone from the back of the perineum. During use of the absorbent article, the second low weight area 42 is located in the area of the wearer's rupture.

  The third low weight area 43 extends outward in the width direction W from the second low weight area 42 in the rear side area S3. The third low weight area 43 may be connected to the second low weight area 42. The front edge line of the third low weight area 43 may extend substantially parallel to the width direction W inside the width direction W. Further, the front edge line of the third low weight area 43 may protrude forward on the outer side in the width direction W. The rear edge line of the third low weight area 43 may be inclined forward as it goes from the inner side to the outer side in the width direction W.

  The outer edge of the third low weight area 43 in the width direction W is located inside the outer edge of the absorbent core 31 in the rear region S3. A plurality of third low weight areas 43 may be provided at intervals in the front-rear direction L.

  The absorbent article 1 includes crimping portions 51, 52, and 53 in which a sheet of the core wrap 32 on the skin surface side of the absorbent core 31 and a sheet of the core wrap 32 on the non-skin surface side of the absorbent core 31 are crimped to each other. (See FIG. 4).

  The first crimping part 51 extends in the width direction W along the first low weight area 41. The width of the first crimping part 51 in the front-rear direction L is preferably smaller than the width of the first low weight area 41 in the front-rear direction L. Moreover, it is preferable that the 1st crimping | compression-bonding part 51 is continuously extended from the one end of the absorber 30 along the width direction W to the other end.

  The second crimping part 52 extends in the front-rear direction L along the second low weight area 42. The width of the second pressure-bonding portion 52 in the width direction W is preferably smaller than the width of the second low weight area 42 in the width direction W. The second crimping part 52 may be connected to the first crimping part 51.

  The third crimping portion 53 extends along the third low weight area 43. The width of the third pressure-bonding portion 53 in the front-rear direction L is preferably smaller than the width of the third low weight area 43 in the front-rear direction L. The third crimping part 53 may be connected to the second crimping part 52.

  It is preferable that the first pressure-bonding part 51, the second pressure-bonding part 52 and / or the third pressure-bonding part 53 are not formed on the skin sheet 10. More specifically, the first crimping part 51, the second crimping part 52, and / or the third crimping part 53 may be formed by crimping only the core wrap 32 or only the absorbent core 31 and the core wrap 32. preferable. When the absorbent core is present in the low weight areas 41, 42, 43, the crimping parts 51, 52, 53 may be parts where the absorbent cores of the low weight areas 41, 42, 43 and the core wrap 32 are crimped together. . When the absorbent core is not present in the low weight areas 41, 42, 43, the crimping parts 51, 52, 53 may be parts where only the core wrap 32 is crimped. In this case, the absorbent core 31 is divided from each other with the low weight areas 41, 42, 43 and the crimping parts 51, 52, 53 as boundaries. The crimping parts 51, 52 and 53 can be formed by embossing. In addition, since the crimping | compression-bonding parts 51, 52, and 53 are covered with the skin sheet 10, they cannot be visually recognized from the outside or are difficult to visually recognize. Instead of the above embodiment, the first pressure-bonding part 51, the second pressure-bonding part 52 and / or the third pressure-bonding part 53 may be formed on the skin sheet 10 and / or the non-skin sheet 20.

(3) Non-joining region between the top sheet and the absorber The skin sheet 10 is not joined to a member provided on the non-skin surface side of the skin sheet 10 in the first low weight area 41. It has the joining area | region 46 (refer FIG.1 and FIG.3). More specifically, the skin sheet 10 is not joined to the core wrap 32 in the non-joined region 46. The non-bonding region 46 is indicated by a region surrounded by a broken line in FIG.

  The non-joining region 46 may extend at least from one end to the other end of the first low weight area 41 in the width direction W. Instead, the non-joining region 46 may not extend to both ends of the first low weight area 41 in the width direction W. The non-joining area 46 may extend from at least the first low weight area 41 to the third low weight area 43 closest to the first low weight area 41 among the plurality of third low weight areas 43. Accordingly, the skin sheet 10 can be lifted from the absorbent body 30 in the first low weight area 41 and the rear area.

(4) Pressing part Absorbent article 1 has a pressing part formed by compressing at least absorption core 31 in thickness direction T. This pressing part may have the front side pressing part 81, the longitudinal pressing part 82, and a pair of rear side pressing parts 84 (refer FIG.1 and FIG.4).

  The front pressing part 81 is provided at least in the excretion opening contact area S1. The front side pressing part 81 may extend from the excretion opening contact area S1 to the front side area S2. The front pressing part 81 may be formed by compressing the topsheet 11, the absorbent core 31, and the core wrap 32 in the thickness direction T. The front side compression part 81 has a section along the front-rear direction L provided on both sides in the width direction W of the middle-high part 33. The front side compressed portion 81 may define a side edge in the width direction W of the middle-high portion 33.

  The front side squeezing part 81 is bent in the width direction W in the vicinity of the front end edge of the absorbent core 31 and is continuously connected in a U shape. Instead of this, the front pressing part 81 may be provided separately on both sides in the width direction W of the middle-high part 33. That is, the pair of front pressing parts 81 may be provided separately in a form separated from each other.

  The longitudinal pressing portion 82 is provided on both sides of the center line CL, more specifically, the second low weight area 42 in the rear side region S3. The longitudinal pressing part 82 may be formed by the absorber 30 and the surface sheet 11 being compressed in the thickness direction.

  The longitudinal pressing part 82 extends along the front-rear direction L. The longitudinal pressing portion 82 may extend linearly in the front-rear direction L, or may extend in a curved manner inclined with respect to the front-rear direction L. The longitudinal pressing part 82 may be formed in front of the position P1 of the maximum width of the hip flap 4.

  A pair of rear side compression parts 84 are the rear side area S3, and are provided on both sides across the center line CL. The rear side pressing part 84 may be formed by the absorber 30 and the surface sheet 11 being compressed in the thickness direction. A pair of rear side compression parts 84 are spaced apart from each other with a center line CL passing through the center in the width direction W of the absorbent article. The pair of rear side compressed parts 84 may be located on the rear side of the position P1 of the maximum width of the hip flap 4.

  The absorbent article 1 includes a first pressing unit 85 and a second pressing unit formed by pressing at least two of the sheets constituting the skin sheet 10 and the non-skin sheet 20 in the thickness direction T. 87 and the 3rd pressing part 86 may be included (refer FIG. 1). The first pressing part 85, the second pressing part 87 and the third pressing part 86 may be formed along the outer edge of the hip flap 4.

  The absorbent article 1 may have a squeezed portion 88 formed by squeezing the skin sheet 10 at least in the first low weight area 41. It is preferable that the pressing part 88 is formed only in the skin sheet 10 (refer FIG. 1).

  In the front-rear direction L, the compressed portion 88 may slightly reach the front side slightly beyond the first low weight area 41, but is preferably present on the rear side than the middle-high portion 33. The pressing part 88 may extend from at least the first low weight area 41 to the third low weight area 43 closest to the first low weight area 41 among the plurality of third low weight areas 43. The compressed portion 88 may be formed in a region that is substantially equivalent to the non-joining region 46 or a region that is narrower than the non-joining region 46.

  The compressed portion 88 is preferably formed continuously in the front-rear direction L at least in the first low weight area 41. Here, if the pressing part 88 continues in the front-back direction L, it is not necessary to be formed linearly. For example, as shown in FIG. 1, the compressed portion 88 may have a zigzag shape in the front-rear direction L. It replaces with this, and the pressing part 88 may be continuously formed in the front-back direction L at least in the 1st low weight area | region 41 at least.

  Preferably, the pressing part 88 is formed in a lattice shape as shown in FIG. Specifically, the compressed portion 88 has a plurality of first linear patterns inclined with respect to the front-rear direction and a plurality of second linear patterns inclined with respect to the front-rear direction and the first linear pattern. Good. It is preferable that the pressing part 88 is provided in an area narrower than the area of the second sheet 13.

(5) Adhesive region As shown in FIG. 2, the absorbent article 1 includes a first main body adhesive region 61, a second main body adhesive region 62, and a wing provided with an adhesive for fastening the absorbent article 1 to the underwear S. It has an adhesive region 63 and a hip flap adhesive region 64. These adhesive regions 61 to 64 are provided on the non-skin surface side of the non-skin surface sheet 20. The adhesive regions 61 to 64 may be covered with a release sheet in a state before use. The release sheet prevents deterioration of the adhesive in the adhesive regions 61 to 64 before use. The release sheet is removed by the wearer during use.

  The first main body adhesive region 61 is disposed in front of the second main body adhesive region 62. The first main body adhesive region 61 and the second main body adhesive region 62 extend in the front-rear direction L. The first main body adhesive region 61 is disposed away from the second main body adhesive region 62 in the front-rear direction L. The first main body adhesive region 61 may be disposed on the front side of the first low weight area 41 and straddling the excretory opening contact region S1 and the front side region S2. The second main body adhesive region 62 is disposed in the rear region S3 on the rear side of the first low weight area 41. It is preferable that the 1st main body adhesion area | region 61 and the 2nd main body adhesion area | region 62 are not provided on the centerline CL. The wing adhesive region 63 is provided in the wing 3. The hip flap adhesive region 64 is provided in the hip flap 4.

  The first low weight area 41 is preferably arranged in a region that does not overlap the adhesive regions 61 to 64 in the thickness direction T. More specifically, the first low weight area 41 is provided in a region between the first main body adhesive region 61 and the second main body adhesive region 62.

  The second low weight area 42 is preferably arranged in an area that does not overlap the adhesive areas 61 to 64 in the thickness direction T. More specifically, the second low weight area 42 is provided between the plurality of second main body adhesive areas 62.

  The pair of longitudinal pressing portions 82 is preferably provided in a region overlapping the second main body adhesive region 62.

(6) Absorbent article being worn Next, the shape of the absorbent article being worn will be described with reference to FIGS. FIG. 5 is a perspective view of the absorbent article in use. FIG. 6 is a schematic cross-sectional view of the absorbent article in use, taken along line 6A-6A in FIG. 7 is a schematic cross-sectional view of the absorbent article in use, taken along line 7A-7A in FIG. 8 is a schematic cross-sectional view of the absorbent article in use, taken along line 3A-3A in FIG. In FIGS. 6 and 7, a line indicating the shape of the wearer's body is indicated by a two-dot chain line.

  When wearing the absorbent article 1 as a sanitary napkin, the absorbent article 1 is fixed to the undergarment S. The excretion opening contact area S1 of the absorbent article 1 is sandwiched between both legs of the wearer and receives a force from the outside in the width direction W toward the inside in the width direction W.

  The cross-sectional shape of the wearer's body along the width direction W of the absorbent article 1 is different between the crotch vicinity and the buttocks vicinity. Specifically, the cross-sectional shape of the body in the vicinity of the wearer's crotch cleft (around the vaginal opening where menstrual blood appears) is such that the large labia protrudes from the base of the large labia and protrudes toward the absorbent article 1 side. Convex shape. In the inseam area of the wearer, the excretion opening contact area S1 of the absorbent article is arranged to face. In the crotch of the wearer, the absorption core 31 of the excretory opening contact area S1, in particular, the middle / high part 33 is arranged along the body, and leakage of body fluid in the crotch can be suppressed (see FIG. 6).

  An anus and a fissure are located behind the perineum located behind the great labia of the wearer. The cross-sectional shape of the body near the rear of the perineum is a shape in which the center in the width direction is recessed. The rear side area S3 of the absorbent article is disposed to face the wearer's buttocks.

  In the rear side area S3, a second low weight area 42 extending in the front-rear direction L along the center line CL is formed. Therefore, the center of the rear region S3 in the width direction W easily protrudes toward the wearer's body due to the force from the outside to the inside of the absorbent article (see FIG. 7). Thereby, in back side region S3, the absorbent article 1 can deform | transform according to the shape of a wearer's crack. As a result, the wearer can obtain a comfortable fit with the absorbent article 1 even in the buttocks.

  Here, the absorbent article 1 tends to change into a different shape according to the shape of the wearer's body in the excretory opening contact region S1 and the rear side region S3. The first low weight area 41 suppresses the influence of the deformation of the absorbent body 30 in the excretory opening contact area S1 on the deformation of the absorbent body 30 in the rear side area S3. That is, the first low weight area 41 makes it easy for the absorbent article to be independently deformed in the excretory opening contact area S1 and the rear area S3.

  In addition, sanitary napkins for nighttime are often used in a sleeping posture on the back. In the posture where the wearer is lying on his back, a gap is easily formed between the buttocks and the absorbent article 1.

  Specifically, since the wearer's buttocks are crushed by the floor in the sleeping position, the rear area S3 of the absorbent article 1 may slightly move toward the excretory opening contact area S1 by the force from the buttocks. is there. Thereby, distortion arises in the front-back direction L in the vicinity of the region between the excretory opening contact region S1 and the rear side region S3. Due to this distortion, a gap may be generated between the absorbent article 1 and the buttocks in the vicinity of the region between the excretory opening contact region S1 and the rear side region S3.

  If there is a gap between the buttocks and the absorbent article, menstrual blood may travel through the body to the back side and leak from behind the absorbent article. In addition, the wearer may feel that menstrual blood is transmitted through the body and feel anxious.

  In the absorbent article 1 which concerns on one Embodiment, the non-joining area | region 46 of the skin sheet 10 exists in the place of at least 1st low weight area S1. Therefore, when the rear region S3 of the absorbent article moves toward the excretory opening contact region S1, the non-bonded region 46 of the skin sheet 10 protrudes toward the wearer's body (reference sign “FIG. 8”. 47 "). The protrusion 47 of the skin sheet 10 fills a gap between the wearer's body. Thereby, even if it is a sleeping posture, menstrual blood can be prevented from being transmitted to the back side through the body.

(7) Folding of absorbent article The absorbent article 1 may be individually packaged in a folded state. Hereinafter, with reference to FIGS. 1, 2, 9, and 10, folding of the absorbent article 1 will be described. FIG. 9 is a plan view of the absorbent article 1 folded along the folding line FL of FIG. FIG. 10 is a schematic side view of the absorbent article folded along the fold lines F1 to F3 in FIG. 9.

  The absorbent article 1 has a front / rear fold line FL extending along the front / rear direction L, and a first fold line F1, a second fold line F2, and a third fold line F3 extending along the width direction W. Good. These folding lines FL, F1, F2, and F3 are lines for folding the absorbent article 1.

  The front-rear fold line FL may be provided outside the outer end of the absorber 30 in the width direction W. Further, the front-rear fold line FL may be provided on the inner side in the width direction W than the first pressing portion 85, the second pressing portion 87, and the third pressing portion 86.

  The first fold line F1 is provided on the rear side of the second fold line F2. The first fold line F <b> 1 may be provided in a region on the rear side of the maximum width P <b> 1 of the hip flap 4. Further, the first folding line F <b> 1 may be provided between the longitudinal pressing portion 82 and the rear pressing portion 84 in the front-rear direction L. The first fold line F <b> 1 preferably passes through the third low weight area 43. In the absorbent article 1 in which the length of the rear side region S3 in the front-rear direction L is relatively short, the first fold line F1 may not be provided.

  In the front-rear direction L, the second fold line F2 is provided between the first fold line F1 and the third fold line F3. The second fold line F <b> 2 passes through an area on the rear side of the first low weight area 41 in the non-bonded area 46. The 2nd folding line F2 may be arrange | positioned rather than a pair of longitudinal pressing part 82. FIG. It is preferable that the second fold line F2 passes over the second main body adhesive region 62.

  The third fold line F3 is provided in front of the second fold line F2. The third fold line F3 may be provided on the front side of the highest part of the middle-high part 33. More specifically, it is preferable that the third fold line F <b> 3 avoids the highest portion of the middle-high portion 33 and passes through an inclined portion connected to the highest portion of the middle-high portion 33. The third fold line F3 may be provided in the front side area S2.

  The absorbent article 1 is folded inward from the front-rear fold line FL so that the non-skin side is exposed to the outside (see FIG. 9). From the state shown in FIG. 9, the absorbent article 1 is preferably folded in the order of the first fold line F1, the second fold line F2, and the third fold line F3 (see FIG. 10).

  In the state in which the absorbent article 1 is folded, the rear edge 92 of the absorbent article is located inside the absorbent article. In the state in which the absorbent article 1 is folded, the front edge 91 of the absorbent article is located outside the absorbent article. The first fold F1 is located inside the folded absorbent article 1. The second fold line F2 and the third fold line F3 are located outside the folded absorbent article 1.

(8) Action / Effect According to one embodiment, the absorber 30 has the first low weight area 41 extending in the width direction W between the excretory opening contact area S1 and the rear side area S3. The skin sheet 10 is joined to a member (for example, the core wrap 32) provided on the non-skin surface side from the skin sheet 10 from the first low weight area 41 to the rear area of the first low weight area 41. The non-bonding region 46 is not included. The absorbent article 1 has a fold line F <b> 2 that extends in the width direction W in a region behind the first low-weight area 41 in the non-bonded area 46 and folds the absorbent article 1.

  Since the wearer's buttocks are crushed by the floor in the posture where the wearer is sleeping, the rear side region S3 of the absorbent article 1 is slightly moved toward the excretory opening contact region S1 by the force from the buttocks. In the absorbent article 1 which concerns on this embodiment, the non-joining area | region 46 of the skin sheet 10 exists in the place of at least 1st low weight area S1. Therefore, when the rear region S3 of the absorbent article moves toward the excretory opening contact region S1, the non-bonded region 46 of the skin sheet 10 protrudes toward the wearer's body (reference sign “FIG. 8”. 47 ").

  Moreover, the fold line F2 which folds the absorbent article 1 is formed in the area | region of the back side rather than the 1st low weight area | region 41 where the skin sheet 10 is most likely to protrude to a wearer side. Therefore, it can prevent that the protrusion of the skin sheet 10 is inhibited by the crease generated by the fold line F2. Furthermore, since the fold line F2 passes through the region of the absorbent core having a larger basis weight than the first low basis weight region 41, the fold line is less likely to occur. Therefore, the skin sheet 10 can be more easily protruded toward the wearer's skin at the first low weight area 41.

  According to one embodiment, it has the adhesion field 62 provided in the non-skin surface of non-skin sheet 20, and fold line F2 has passed on adhesion field 62. In general, the portion where the adhesive region exists has higher rigidity than the portion where the adhesive region exists. That is, the fold line F <b> 2 passes through a region where rigidity is high due to the adhesive region 62. Thereby, creases caused by the fold line F2 can be further prevented. Therefore, the skin sheet 10 can be more easily protruded toward the wearer's skin at the first low weight area 41.

  According to one embodiment, the adhesive region 62 is disposed in a region that does not overlap with the first low weight area 41. Thereby, the first low weight area 41 can function as a deformation base point. That is, the absorption cores 31 adjacent to each other with the first low weight area 41 interposed therebetween can easily move independently of each other. Thereby, it becomes easy to fit the absorber 30 according to a wearer's inseam and the shape of a buttocks. Therefore, it is possible to provide an absorbent article that is familiar to the wearer's body and can give a comfortable fit to the wearer.

  According to one embodiment, a pair of longitudinal pressing portions 82 extending along the front-rear direction L are formed on both sides of the center line CL connecting the centers in the width direction W in the rear side region S3. The fold line F2 is disposed on the front side of the pair of longitudinal pressing portions 82. The area | region pinched | interposed by a pair of longitudinal pressing part 82 protrudes along a wearer's crack during wear of an absorbent article. By disposing the fold line F2 on the front side of the pair of longitudinal pressing portions 82, it is possible to prevent the protrusion of the region sandwiched between the longitudinal pressing portions 82 from being inhibited. Thereby, in the back side region S3, the absorbent article 1 can be easily protruded along the wearer's crack.

  According to one embodiment, the absorbent article 1 is configured to be folded in the order of the first fold line F1, the second fold line F2, and the third fold line F3. Thus, the absorbent article 1 can be packaged compactly by folding the absorbent article 1.

  According to one embodiment, the absorber 30 has a third low weight area 43 that extends outward from the second low weight area 42 in the width direction W in the rear side area S3. The first fold line F <b> 1 passes through the third low weight area 43. The third low weight area 43 forms a deformation base point extending along the width direction W. Since the absorbent core 31 in the rear side region S3 can be deformed with the third low weight area 43 as a base point, the absorbent article 1 can easily fit along the roundness along the front-rear direction L of the body. By attaching the fold line F1 to the third low weight area 43, the absorbent article 1 is more likely to be deformed along the roundness of the buttocks in the front-rear direction L in the rear side area S3. Thereby, it becomes easy to fit the absorbent article 1 with a wearer's buttocks, and can suppress the transmission leak of a bodily fluid more.

  According to one embodiment, the third fold line F3 passes through the inclined portion of the middle-high portion 33 as described above. Thereby, it is possible to prevent the folds from being attached to the highest portion of the middle-high portion 33. As a result, it is possible to suppress the middle / high portion 33 from being difficult to fit into the wearer's skin due to folding.

  Although the present invention has been described in detail using the above-described embodiments, it is obvious to those skilled in the art that the present invention is not limited to the embodiments described in this specification. The present invention can be implemented as modified and changed modes without departing from the spirit and scope of the present invention defined by the description of the scope of claims. Therefore, the description of the present specification is for illustrative purposes and does not have any limiting meaning to the present invention.

1: Absorbent article 10: Skin sheet 20: Non-skin sheet 30: Absorbent body 31: Absorbing core 32: Core wrap 33: Middle and high part 41: First low weight area 42: Second low weight area 43: Third low Weight area 51: 1st crimping part 52: 2nd crimping part 53: 3rd crimping part 61: 1st main body adhesion area 62: 2nd main body adhesion area 81: Front side compression part 82: Long side compression part 84: Rear side compression part L: front-rear direction W: width direction T: thickness direction S1: excretory opening contact area S2: front side area S3: rear side area CL: center line

Claims (5)

The front-rear direction and the width direction orthogonal to each other;
An excretory opening contact area facing the excretion opening of the wearer;
A rear region located on the rear side of the excretory opening contact region;
An absorber disposed at least in the excretory opening contact area and the rear side area;
A skin sheet provided on the skin side of the absorbent body;
An absorbent article having a non-skin surface sheet provided on the non-skin surface side of the absorbent body,
The absorber has a first low weight area extending in the width direction between the excretory opening contact area and the rear side area,
The skin surface sheet extends from the first low weight area to the rear side area of the first low weight area, and is not joined to a member provided on the non-skin surface side of the skin sheet. Have
The absorbent article has a fold line extending along the width direction in a region behind the first low-weight area in the non-bonded region, and folding the absorbent article.
In the rear region, a pair of longitudinal pressing portions extending along the front-rear direction are formed on both sides across the center line connecting the centers in the width direction,
The said folding line is an absorbent article arrange | positioned ahead of said pair of longitudinal pressing part. Having an adhesive area provided on the non-skin surface of the non-skin sheet;
The absorbent article according to claim 1, wherein the fold line passes over the adhesive region.   The absorbent article according to claim 2, wherein the adhesive region is disposed in a region that does not overlap the first low weight area. The fold line is a second fold line;
The absorbent article has a first fold line extending along the width direction on the rear side of the second fold line, and the width direction on the front side of the second fold line and the first low weight area. A third fold line extending
The absorbent article according to any one of claims 1 to 3, wherein the absorbent article is configured to be folded in the order of the first fold line, the second fold line, and the third fold line. Goods. The absorbent body has a second low weight area extending in the front-rear direction along the center line of the absorbent article in the rear side area, and a third low weight area extending outward from the second low weight area in the width direction. Have
The absorbent article according to claim 4, wherein the first fold line passes through the third low weight area.

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