JP6190861B2 - Absorbent articles - Google Patents

Description

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

  The absorbent article for nighttime is used in a state where the wearer is sleeping, and is used for a longer time than the absorbent article for daytime. Therefore, at the time of use of the absorbent article for night use, the after-leakage tends to occur. Patent Document 1 discloses an absorbent article for night use that prevents back leakage.

  The absorbent article of patent document 1 has the excretion part opposing part arrange | positioned facing a wearer's liquid excretion part, and the back part arrange | positioned in the back side rather than the excretion part opposition part. The absorber in the rear part is formed with a plurality of high density parts and low density parts extending in the width direction. The absorbent article of Patent Document 1 holds body fluid by a high-density portion having a relatively high density when the body fluid flows backward, and a low-density portion having a relatively low density is flexibly deformed to suppress rear leakage. To do.

JP 2010-136900 A

  The inventor of this application investigated various deformations of the wearer's body. As a result, it has been found that various external forces are applied to the absorbent article according to the movement of the wearer's body, and part of the absorbent article may be in close contact with or away from the body. Furthermore, the inventor has found that when a part of the absorbent article that is in close contact with the body is separated from the body, the wearer may be particularly uncomfortable or anxious about whether body fluid may leak.

  This invention is made | formed in view of the above-mentioned subject, and when a wearer moves, it is easy to continue closely_contact | adhere to a wearer's body, and an object is to provide an absorbent article with good wearing comfort.

  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 article having an absorbent core that is disposed in at least the excretory opening contact area and the rear side area and includes an absorbent material, and is in the width direction behind the excretion opening contact area And a second music part extending in the width direction behind the first music part, and the first music part and the second music part have the absorptivity. The article is configured to bend in the thickness direction, the first region adjacent to the first music part in front of the first music part, and the second music part in the rear of the second music part. And a second region adjacent to the first region and the second portion in the front-rear direction. A weight of the absorbent material of the first intermediate region is lower than a weight of the absorbent material of the first region and the second region, the first curved portion, The second curved portion and the first intermediate region extend from the center line beyond an intermediate point between the outer edge of the absorbent core and the center line in the width direction, and the first intermediate region The length in the front-rear direction is 10 mm or more and 40 mm or less.

  ADVANTAGE OF THE INVENTION According to this invention, even when a wearer moves, it is easy to continue closely_contact | adhere to a wearer's body, and an absorbent article with a good feeling of attachment can be provided.

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 a schematic diagram of the absorbent article in use in a standing posture. It is a mimetic diagram of an absorptive article in the state where the wearer's buttocks are not crushed in the sleeping posture. It is a mimetic diagram of an absorptive article in the state where a wearer's buttocks was crushed in the sleeping posture. It is a mimetic diagram explaining one modification of an absorptive article. It is a schematic diagram explaining another deformation | transformation aspect of an absorbent article. It is a top view of an absorptive article in another embodiment.

(1) Whole structure of absorbent article With reference to FIG. 1 thru | or FIG. 4, the whole structure of the absorbent article 1 which concerns on embodiment is demonstrated. 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 are different 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.

  FIG. 1 is a plan view of the absorbent article, and FIG. 2 is a rear view of the absorbent article. FIG. 3 is a cross-sectional view of the absorbent article taken along line 3A-3A shown in FIG. FIG. 4 is a plan view of an absorbent body provided in the absorbent article. The absorbent article 1 according to this embodiment is a sanitary napkin for night use.

  The absorbent article 1 includes a front-rear direction L extending to the wearer's front side (abdominal side) and rear side (back side), a width direction W orthogonal to the front-rear direction L, the skin-facing surface side T1 of the wearer and the non-skin And a thickness direction T extending to the facing surface side T2.

  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 S1 is an area disposed between the wearer's inseam, 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 91 of the absorbent article 1. The rear side region S3 is located behind the excretory opening contact region S1. The rear end edge of the rear side region S3 defines the rear end edge 92 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.

  The absorbent article 1 includes an absorbent body 30 having an absorbent core in which absorbent materials are laminated, a skin surface sheet 10 positioned on the skin facing surface side T1 from the absorbent body 30, and a non-skin facing surface side T2 from the absorbent body 30. The non-skin-surface sheet | seat 20 located in is provided. The skin sheet 10 covers a liquid-permeable surface sheet 11 that covers at least the center of the absorbent body 30 in the width direction, and an outer edge (outer edge in the width direction) of the surface sheet 11 and extends to the outside in the width direction. And a sheet 12. The non-skin surface sheet 20 is a liquid-impermeable sheet.

  The top sheet 11 is a liquid-permeable sheet that transmits liquid such as body fluid. The top sheet 11 covers at least the surface of the absorber 30. The surface sheet 11 is not particularly limited as long as it is a 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 can be selected from the same material as the top sheet 11. However, in order to prevent menstrual blood from flowing over the side sheet 12 to the outside of the absorbent article 1, the side sheet 12 preferably has hydrophobicity or water repellency. The side seat 12 is disposed on the outer edge of the main body 2, which will be described later, the wing 3, and the hip flap 4.

  The non-skin sheet 20 has substantially the same length as the skin sheet 10. 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 absorbent body 30 includes an absorbent core 31 in which absorbent materials are stacked, and a core wrap 32 that covers the absorbent core 31. Examples of the absorbent material include hydrophilic fibers, pulp, and SAP.

  The core wrap 32 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 includes a first wrap portion that is disposed on the skin surface side with respect to the absorbent core 31 and a second wrap portion that is disposed on the non-skin surface side with respect to the absorbent core 31. It's okay.

  Skin sheet 10 has a non-joining field which is not joined to core wrap 32 in the 1st middle field 41 mentioned below. This non-joining region extends continuously along the width direction W. This non-joining region may extend at least from one end to the other end of the first intermediate region 41 in the width direction W.

  Moreover, the skin surface sheet 10 may have a non-joining area | region which is not joined to the core wrap 32 in the 1st bending guidance part 40 mentioned later. This non-joining region extends continuously along the front-rear direction L.

  The absorbent article 1 has a main body 2, a wing 3, and a hip flap 4. The main body 2 is located in the center in the width direction W of the absorbent article 1 and extends in the front-rear direction L. The wing 3 and the hip flap 4 are portions that extend outward in the width direction W from the outer edge of the main body 2 and swell outward in the width direction W in the rear side region S3. The outer edge 2E of the main body 2 in the width direction W coincides with the outer edge 30E of the absorber 30.

  The main body 2 includes a skin sheet 10, a non-skin sheet 20, and an absorber 30. More specifically, the main body 2 includes a top sheet 11, a part of the side sheet 12, a non-skin surface sheet 20, and an absorber 30.

  The side sheet 12 extends from the end region of the top sheet 10 in the width direction W to the outside in the width direction W. The inner edge of the side seat 12 is along the front-rear direction L and is folded back to the outer side in the width direction W. An elastic member 90 that expands and contracts in the front-rear direction L is disposed between the folded side sheets 12. The inner edge of the side sheet 12 is not joined to the top sheet 11. The stretchable member 90 is joined to the side sheet 12 in a state of being stretched to a predetermined length. Thereby, the inner edge of the side seat 12 is contracted in the front-rear direction L in the natural state. In this way, the inner edge of the side seat 12 and the stretchable member 90 constitute an upright leakproof cuff.

  The stretchable member 90 is joined to the side seat 12 at the end in the front-rear direction L. The joint between the stretchable member 90 and the side sheet 12 is a portion that expresses the stretch force of the stretchable member 90. The elastic member 90 has non-joined portions that are not joined to the side sheet 12 at both ends in the front-rear direction L. The non-joined portion of the stretchable member 90 is a portion where the stretchable force of the stretchable member 90 cannot be expressed. In the present specification, a portion of the stretchable member 90 excluding a portion where the stretchable force of the stretchable member 90 cannot be expressed is referred to as an “effective length portion Le” of the stretchable member 90.

  The effective length portion Le where the stretchability of the stretchable member 90 is expressed extends from the first region R1 to the second region R2 across the first intermediate region 41 in the front-rear direction L. The rear side edge of the effective length portion Le of the elastic member 90 may be disposed in front of the rear side edge of the hip flap adhesive region 64 described later.

  The wing 3 is a portion that is provided in the excretory opening contact area S <b> 1 and extends outward in the width direction from the absorber 30. 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. In the absorbent article in which the wing 3 is present, the front edge of the wing 3 defines the 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 may be 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.

  The wing 3 includes a side sheet 12 and a non-skin surface sheet 20. The center of the wing 3 in the front-rear direction is disposed to face the wearer's excretion opening. The wing 3 is configured to be foldable toward the non-skin surface sheet 20 and is folded back to the non-skin facing surface side of the crotch portion of the underwear when in use. The hip flap 4 is located behind the wing 3. The hip flap 4 is configured to be disposed on the skin facing surface side of the underwear without being folded back to the non-skin facing surface side of the underwear during use.

  The front end edge of the hip flap 4 is defined by the base of the hip flap 4 and corresponds to the most recessed portion in the width direction W. The front end edge of the hip flap 4 may or may not coincide with the rear end edge of the wing 3.

  As shown in FIG. 2, a non-skin facing surface of the non-skin surface sheet 20 is provided with an adhesive region to which an adhesive for stopping the absorbent article on the underwear S is applied. The adhesive area includes a first main body adhesive area 61 and a second main body adhesive area 62 arranged in the main body 2, a wing adhesive area 63 arranged in the wing 3, and a hip flap adhesive area 64 arranged in the hip flap 4. And having. The first main body adhesive region 61 is spaced apart from the second main body adhesive region 62 in the front-rear direction, and is disposed in front of the second main body adhesive region 62.

  The adhesive regions 61 to 64 are covered with a release sheet in a state before use. The release sheet prevents the adhesive from deteriorating before use. The release sheet is peeled off by the wearer during use. In addition, in the absorbent article which does not have a peeling sheet, you may be comprised so that it may prevent that an adhesion area | region deteriorates before use with the packaging sheet which wraps an absorbent article separately.

  In the non-skin surface sheet of the absorbent article, there is a non-adhesive region where no adhesive is provided. The non-adhesive region is a region at least partially overlapping the first intermediate region 41 and extends from one end of the absorbent article to the other end in the width direction W (see FIG. 2).

  The absorbent article 1 is provided with a first music part 41a and a second music part 41b. The 1st music part 41a and the 2nd music part 41b are located in the back side rather than the back end edge of the absorption core 31 rather than the center of the back-and-forth direction of excretion mouth contact region S1. The first curved portion 41a and the second curved portion 41b extend in the width direction W, and are configured so that the absorbent article 1 can be bent in the thickness direction T. In the absorbent body 30 of the present embodiment, the rear end edge of the absorbent core and the rear end edge of the absorbent body substantially coincide.

  The absorbent article 1 includes a first region R1 adjacent to the first music portion 41a in front of the first music portion 41a, a second region R2 adjacent to the second music portion 41b in the rear of the second music portion 41b, and And a first intermediate region 41 located between the first music part 41a and the second music part 41b in the front-rear direction L. The first region R1 is a region from the front end edge 30F of the absorber 30 to the first curved portion 41a. The second region R2 is a region from the rear end edge 30R of the absorber 30 to the second curved portion 41b. The first intermediate region 41 is a region between the first music part 41a and the second music part 41b. The basis weight of the absorbent material in the first intermediate region 41 is lower than the basis weight of the absorbent material in the first region R1 and lower than the basis weight of the absorbent material in the second region R2. The first intermediate region 41 may be a region where the basis weight of the absorbent material, in this embodiment, the fiber material (for example, pulp fiber) in the absorbent material is particularly zero, and the design basis weight is zero. A region where a trace amount of absorbing material mixed from the first region R1 or the second region R2 is disposed may be used.

  The basis weight of the absorbent material in the first intermediate region 41 is preferably 1/3 or less of the basis weight of the absorbent material in the first region R1 adjacent to the first curved portion 41a. Moreover, it is preferable that the fabric weight of the absorbent material of the 1st intermediate | middle area | region 41 is 1/3 or less of the fabric weight of the absorbent material of 2nd area | region R2 adjacent to the 2nd curved part 41b. Thereby, the 1st intermediate area 41 becomes easy to express the function which absorbs the external force concerning an absorptive article so that it may mention below, and becomes easy to change according to a wearer's body movement. In order to exert this effect more remarkably, the basis weight of the absorbent material in the first intermediate region 41 is 1/5 or less of the basis weight of the absorbent material in the first region R1 adjacent to the first curved portion 41a. Preferably it is 1/10 or less. Further, the absorbent material may not be present in the entire first intermediate region 41 and may be partially scattered.

  The 1st music part 41a becomes a boundary from which rigidity changes. The rigidity of the area on the front side of the first music part 41a is different from the rigidity of the area on the rear side of the first music part 41a. More specifically, the basis weight of the absorbent material in the region on the front side of the first curved portion 41a is higher than the basis weight of the absorbent material in the region on the rear side of the first curved portion 41a. Therefore, the rigidity on the front side of the first music part 41a is higher than the rigidity on the rear side of the first music part 41a.

  The 2nd music part 41b is located back rather than the 1st music part 41a. The 2nd music part 41b is a boundary from which rigidity changes. The rigidity of the area on the front side of the second curved part 41b is different from the rigidity of the area on the rear side of the second curved part 41b. More specifically, the basis weight of the absorbent material in the region on the front side of the second curved portion 41b is lower than the basis weight of the absorbent material in the region on the rear side of the second curved portion 41b. Therefore, the rigidity on the front side of the second curved portion 41b is lower than the rigidity on the rear side of the second curved portion 41b.

  The length of the first intermediate region 41 in the front-rear direction L is the portion of the first region R1 adjacent to the first curved portion 41a and the portion of the second region R2 adjacent to the second curved portion 41b. It is longer than the thickest part of the absorber 30.

  Moreover, it is preferable that the length of the 1st intermediate region 41 in the front-back direction is 10 mm or more and 40 mm or less. In the configuration in which the length in the front-rear direction of the first intermediate region 41 is changed, the length in the front-rear direction at the center in the width direction W of the first intermediate region 41 may be 10 mm or more and 40 mm or less. More preferably, the length of the first intermediate region 41 in the front-rear direction is 10 mm or more and 30 mm or less.

  The distance X between the center in the width direction of the first curved portion 41a and the center in the front-rear direction of the excretory opening contact area S1 is preferably 25 mm or more. The distance X between the center in the width direction of the first curved portion 41a and the center in the front-rear direction of the excretory opening contact area S1 is preferably 80 mm or less. In addition, in the structure in which the 1st music part 41a has predetermined length in the front-back direction, the distance of the center of the width direction of the front edge of the 1st music part 41a and the center of the front-back direction of the excretion opening | mouth contact | abutting area S1 May be 25 mm or more and 80 mm or less.

  The first curved portion 41a and the second curved portion 41b are curved in a convex shape toward the rear in plan view. In this case, the first intermediate region 41 is also curved in a convex shape toward the rear in plan view. More specifically, the center in the width direction of the first music part 41a is located behind the outer edge of the first music part 41a. The center of the first music portion 41a in the width direction is a convex shape toward the rear. The center in the width direction of the second music part 41b is located behind the outer edge of the second music part 41b. The center in the width direction of the second curved portion 41b is a convex shape toward the rear. In addition, the distance in the front-back direction of 41b of the 1st music part 41a and the 2nd music part may be fixed, and may be changing.

  The first music part 41 a, the second music part 41 b, and the first intermediate area 41 do not overlap the adhesive area 60 in the thickness direction T. The first main body adhesive region 61 is disposed in the first region R1, and the second main body adhesive region 62 is disposed in the second region R2. The rear end edge 61R of the first main body adhesive region 61 is positioned forward of the first curved portion 41a, and the front end edge 62F of the second main body adhesive region 62 is positioned rearward of the second curved portion 41b.

  The first curved portion 41a, the second curved portion 41b, and the first intermediate region 41 extend from the center line CL in the width direction W beyond the midpoint between the outer edge 30E of the absorbent core in the width direction W and the center line CL. It extends. That is, in the width direction W, the lengths of the first curved portion 41a, the second curved portion 41b, and the first intermediate region 41 are more than half the length of the absorbent core 31.

  Furthermore, it is preferable that the outer edge of the first curved portion 41 a and the outer edge of the second curved portion 41 b are located on the outer edge of the absorbent core 31. That is, the 1st music part 41a and the 2nd music part 41b may be formed over the width direction whole region of an absorption core. In this case, the absorption core 31 is divided in the front-rear direction L by the first music part 41a and the second music part 41b. In the present embodiment, in the absorbent body 30, the outer edge of the absorbent core 31 and the outer edge of the absorbent body 30 substantially coincide. Therefore, the outer edge of the first music part 41 a and the outer edge of the second music part 41 b coincide with the outer edge 30 E of the absorber 30.

  The absorbent article 1 includes a first bending guide portion 40 that is configured to extend along the center line CL that connects the centers in the width direction W in the rear side region S3 and bend the absorbent article. Yes. In the present embodiment, the first bend guiding part 40 includes a third bend part 42 a, a fourth bend part 42 b, and a second intermediate region 42. Instead of this, the first bending guiding part 40 may be constituted by a pressing part in which the absorption core is compressed.

  The third music part 42a and the fourth music part 42b extend in the front-rear direction L, and are configured so that the absorbent article 1 can bend in the thickness direction T. The basis weight of the absorbent material in the second intermediate region 42 is lower than the basis weight of the absorbent material on the outer side in the width direction W from the first bending guide portion 40. The basis weight of the absorbent material in the second intermediate region 42 is preferably 1/3 or less of the basis weight of the absorbent material in the second region R2. Thereby, the 2nd intermediate area 42 becomes easy to protrude toward a wearer's buttocks so that it may mention below. In order to exhibit this effect more remarkably, the basis weight of the absorbent material in the second intermediate region 42 is 1/5 or less, more preferably 1/10 or less, of the basis weight of the absorbent material in the second region R2. . Further, the absorbent material may not be present in the entire second intermediate region 42 and may be partially scattered. That is, the second intermediate region 42 has a design basis weight of 0, but may be a region where a small amount of absorbent material mixed from the second region R2 is disposed. Instead of this, the second intermediate region 42 may be a region where the basis weight of the absorbent material is zero.

  The 3rd music part 42a becomes a boundary from which rigidity changes. The rigidity of the regions on both sides of the third curved portion 42a is different from each other. The 4th music part 42b is a boundary from which rigidity changes. The rigidity of the regions on both sides of the fourth curved portion 42b is different from each other. The second intermediate region 42 extends along the center line CL.

  It is preferable that the 1st bending guide part 40 has reached the back rather than the center of the back side area S3 in the front-back direction L. The first bend guiding part 40 may be connected to the first intermediate region 41. In this case, the second intermediate region 42 that constitutes the first bending guide portion 40 may be connected to the first intermediate region 41. As will be described later in the description of the wearing state, the first bending guide portion 40 guides a convex bending deformation toward the wearer along the heel portion. For this reason, the absorbent material tends to gather in the front end portion of the bending deformation along the front-rear direction L and become hard. When the first bending guide portion 40 and the first intermediate region 41 are continuously connected, the basis weight of the absorbent material at the front end portion of the bending deformation along the front-rear direction L is small, so the front side of the bending deformation The edge becomes hard and difficult. Therefore, a comfortable wearing feeling can be given to the wearer. Note that the first bending guide portion 40 may not be connected to the first intermediate region 41.

  The absorbent article has a second bending guide part 43 configured to extend from the first bending guide part 40 to the outside in the width direction W in the rear side region S3 and bend the absorbent article. May be. The 2nd bending guide part 43 may be comprised from the area | region which has an absorbent material of the fabric weight lower than the fabric weight of the absorbent material of 2nd area | region R2. In this case, it is preferable that the basis weight of the absorbent material constituting the second bending guide portion 43 is 1/3 or less of the basis weight of the absorbent material in the second region R2. In addition, the second bending guide portion 43 may be a region where the basis weight of the absorbent material is 0, or the design basis weight is 0, but a small amount of the absorbent material mixed from the second region R2 is arranged. It may be an area.

  The absorber 30 has a middle-high portion 33 positioned on the inner side in the width direction than the outer edge 30 </ b> E of the absorber 30. The middle-high portion 33 is located in the first region R1 and is located on the inner side in the width direction than the outer edge 30E of the absorber 30 in the first region R1. The thickness of the middle-high portion 33 is thicker than the thickness of the outer edge 30E of the absorber 30 in the first region R1. The basis weight of the absorbent material of the middle-high portion 33 is higher than the basis weight of the absorbent material of the outer edge 30E of the absorber 30 in the first region R1. The middle-high portion 33 is located on the rear side in the first region R1 and is adjacent to the first curved portion 41a.

  In the configuration in which the absorber includes two absorption layers, the middle and high portions of the absorber have two absorption layers, and the portions other than the middle and high portions of the absorber have only one absorption layer. May be. Further, as a modification, a configuration in which the middle and high parts of the absorber have an auxiliary sheet that draws body fluid, and other than the middle and high parts of the absorber may have no auxiliary sheet.

  The absorbent article 1 has a pressing part formed by compressing at least the absorbent core 31 in the thickness direction T. This pressing part may have the front side pressing part 81 and the longitudinal pressing part 82 (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 part 82 is provided on both sides of the center line CL, more specifically, the first bending guiding part 40 in the rear side region S3. The longitudinal pressing part 82 is formed by compressing at least the absorber 30 in the thickness direction. 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. It is preferable that the longitudinal pressing portion 82 does not reach the first intermediate region 41.

  The pair of longitudinal pressing portions 82 may be formed at intervals in the front-rear direction L at the second bending guide portion 43.

  The “thickness of the absorber” in this specification is measured by the following measurement method.

  When the absorbent article 1 is enclosed in a package or the like, a sample that is removed from the package and left in that state in an atmosphere of 20 ° C. ± 2 ° C. and a relative humidity of 60% ± 5% RH is used.

The measurement position is the central part in the product width direction of the absorber. When measuring, it is measured not in a state where the absorbent article is contracted but in a state where the elastic member of the absorbent article is extended. Moreover, parts other than an absorber, such as a skin surface sheet other than an absorber, and a non-skin surface sheet, are removed. A dial gauge PEACOCK manufactured by Ozaki Mfg. Co., Ltd. is used, a measuring element having a diameter of 10 mm is used, a specimen having a size of 30 mm × 30 mm is prepared, and the thickness of the specimen is measured. A measuring device adjusts so that the measurement pressure with respect to a test piece may be 3 g / cm < ² >. Here, with respect to 10 samples, the above-described measurement was performed in each state, and the average value was defined as the length.

  In addition, the measurement of “weight and density of absorber” in this specification is performed by the following measurement method.

  When the absorbent article 1 is enclosed in a package or the like, a sample that is removed from the package and left in that state in an atmosphere of 20 ° C. ± 2 ° C. and a relative humidity of 60% ± 5% RH is used.

  In the absorbent article packaged by the packaging body, the packaging body is opened, the folded absorbent article is developed, and the thickness and area of the portion where the basis weight and density are measured are measured. Subsequently, the part which measures a fabric weight and a density is cut out from an absorbent article, and the weight of the cut-out part is measured. Next, parts other than the absorber, such as the top sheet and the back sheet, are removed from the cut out part, and the weight of the absorber is measured. The basis weight is calculated based on the weight of the absorbent body and the area of the portion where the basis weight and density are measured. The density is calculated based on the basis weight and thickness.

  In addition, the “length” in this specification is measured by the following measurement method.

  When the absorbent article 1 is enclosed in a package or the like, a sample that is removed from the package and left in that state in an atmosphere of 20 ° C. ± 2 ° C. and a relative humidity of 60% ± 5% RH is used.

  Next, using a spring measure (tape: glass fiber-containing polyvinyl chloride coating) manufactured by Shinwa Measurement Co., Ltd., the length of this state of the measurement target part is measured so as to be along the measurement target part. Here, with respect to 10 samples, the above-described measurement was performed in each state, and the average value was defined as the length.

  The first wrap portion of the core wrap 32 and the second wrap portion of the core wrap 32 are joined at the first intermediate region 41 in a compressed state with each other via the absorbent core 31 or without the absorbent core 31. It's okay. Hereinafter, this joining portion is referred to as a “first crimping portion 51” (see FIG. 4).

  In addition, the first wrap portion of the core wrap 32 and the second wrap portion of the core wrap 32 are compressed with each other at the first bending guide portion 40 via the absorbent core 31 or without the absorbent core 31. May be joined together. Hereinafter, this joining portion is referred to as a “second crimping portion 52” (see FIG. 4).

  Further, the first wrap portion of the core wrap 32 and the second wrap portion of the core wrap 32 are compressed at the second bending guide portion 43 through the absorbent core 31 or without the absorbent core 31. May be joined together. Hereinafter, this joining portion is referred to as a “third crimping portion 53” (see FIG. 4).

  When the first intermediate region 41, the first bending guide portion 40, and the second bending guide portion 43 do not have the absorbent material that constitutes the absorbent core 31, the crimping portions 51, 52, and 53 do not pass through the absorbent core 31. The first wrap portion and the second wrap portion are directly joined to each other. When the first intermediate region 41, the first bending guide portion 40, and the second bending guide portion 43 have an absorbent material that constitutes the absorbent core 31, the crimping portions 51, 52, and 53 are interposed via the absorbent core 31. The first wrap portion and the second wrap portion are indirectly joined to each other.

  The width of the first pressure-bonding part 51 in the front-rear direction L is preferably smaller than the width of the first intermediate region 41 in the front-rear direction L. Moreover, it is preferable that the 1st crimping | compression-bonding part 51 is extended along the width direction W continuously.

  The second crimping part 52 extends in the front-rear direction L along the first bending guide part 40. The width of the second crimping part 52 in the width direction W is preferably smaller than the width of the first bending guide part 40 in the width direction W. The second crimping part 52 may be connected to the first crimping part 51.

  The third crimping part 53 extends along the second bending guide part 43. The width of the third crimping portion 53 in the front-rear direction L is preferably smaller than the width of the second bending guide portion 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. The crimping parts 51, 52, 53 can be formed by embossing.

(2) Wearing state of absorbent article Next, the wearing state of the absorbent article 1 configured as described above will be described. FIG. 5 is a perspective view of the absorbent article in use. 6 is a cross-sectional view based on the 6A-6A cross section of FIG. 1 in a state where the absorbent article 1 is attached to the wearer. FIG. 7 is a cross-sectional view based on the 7A-7A cross section of FIG. 1 in a state where the absorbent article 1 is attached to the wearer.

  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. By this force, the excretion opening contact area S1 is lifted so as to fit near the excretion opening of the wearer (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 region S3, a first bending guide portion 40 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 FIGS. 5 and 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.

  Thus, even if the 1st bending induction | guidance | derivation part 40 protruded along the crack, since the several 2nd bending induction | guidance | derivation part 43 is formed in the width direction W in back side area S3, it is absorptive. The rear region S3 of the article can be curved along the roundness of the wearer's buttocks. Thereby, the wearer can obtain a more comfortable fit in the buttocks.

  FIG. 8 shows a state where a wearer wearing the absorbent article 1 stands. The first region R1 of the absorbent article 1 is fastened to the crotch portion of the underwear (the portion facing the crotch region of the wearer) via the first main body adhesive region 61. 2nd area | region R2 of the absorbent article 1 is fastened by the back part (part facing a wearer's buttocks) via the 2nd main body adhesion area | region 62 of the crotch part of underwear. With the wearer standing, the buttocks of the wearer are inflated.

  FIG. 9 shows a state in which the cross-sectional view shown in FIG. 8 is rotated 90 degrees, and shows a state where the wearer lies on his back. Although the wearer's body is lying on his / her back, the wearer's body is pressed by the bedding, but in FIG. 9, for convenience of explanation, a virtual state where the wearer's body is not pressed by the bedding is shown. . FIG. 9 illustrates a line LB indicating the bedding. A region where the body overlaps with the line LB of the bedding is a region where the body is pressed by the bedding and is deformed while the body is sleeping.

  FIG. 10 shows a state in which a wearer's body sleeping on his / her back is deformed by being pressed by the bedding. In the state shown in FIG. 10, the area | region which has overlapped with the line of a body and bedding in FIG. 9 has deform | transformed. More specifically, the bulge of the wearer's buttocks is crushed, and a part of the wearer's buttocks is flat. The collapsed portion of the buttocks moves to the crotch side (left direction in FIG. 10) and swells from the base of the leg to the leg tip side. The 2nd music part 41b is arrange | positioned at the edge part by the side of the buttocks of the part where the collar part was crushed, and the 1st music part 41a is arrange | positioned at the end part of the crotch side of the part where the collar part was crushed. Therefore, the first intermediate region 41 of the absorbent article is deformed along the portion where the bulge of the buttock is crushed and is disposed along the portion where the buttock is crushed.

  The center in the front-rear direction of the excretion opening contact area S1 is a position facing the wearer's excretion opening. A deformation starting point of the first music part 41a and a deformation starting point of the second music part 41b are formed at a position corresponding to the buttocks behind the excretion opening of the wearer. Therefore, the absorbent article 1 is flexibly deformed according to the deformation of the buttocks when the swelling of the buttocks is crushed. Thereby, in the sleeping posture, the state where the absorbent article 1 is fitted to the body is maintained.

(3) Effects According to the absorbent article according to the embodiment, the first curved portion 41a extending in the width direction behind the excretory opening contact region S1, and the width direction W behind the first curved portion 41a. And a second curved portion 41b that extends. The 1st music part 41a and the 2nd music part 41b are constituted so that an absorptive article can bend in the thickness direction. The first region R1 adjacent to the first music part 41a in front of the first music part 41a, the second region R2 adjacent to the second music part 41b behind the second music part 41b, and the first in the front-rear direction L A first intermediate region 42 located between the curved portion 41a and the second curved portion 41b is provided. The basis weight of the absorbent material in the first intermediate region 41 is lower than the basis weight of the absorbent material in the first region R1 and the second region R2. The first curved portion 41a, the second curved portion 41b, and the first intermediate region 41 extend from the center line CL beyond the midpoint between the outer edge of the absorbent core and the centerline in the width direction. The length of the first intermediate region 41 in the front-rear direction L is not less than 10 mm and not more than 40 mm.

  Since the first intermediate region 41 is a region where the basis weight of the absorbent material is low, it is possible to absorb (release) external force applied to the absorbent article. When such an area extends to the left and right across the center line CL of the absorbent article and more than half of the length of the absorbent article 1, the absorbent article receives a force that causes the absorbent article to rotate left and right Alternatively, the first intermediate region 41 can be deformed so as to release the external force applied to the absorbent article when receiving a force that moves left and right. Furthermore, the 1st intermediate | middle area | region 41 can also deform | transform so that the force which presses an absorbent article may be escaped by the overhang | projection of the buttocks accompanying a wearer's crushing in the attitude | position which the wearer slept.

  Moreover, since the length in the front-rear direction L of the first intermediate region 41 that can be flexibly deformed is long, even if the absorbent article receives external forces from various directions during the wearer's movement, excretion The mouth contact area S1 and the rear side area S3 are deformed independently, and the excretion opening contact area S1 and the rear side area S3 can be maintained in a state of being fitted to the wearer's body.

  FIG. 11 shows the appearance when the absorbent article receives a force that shrinks in the front-rear direction L. As described above, since the length in the front-rear direction of the first intermediate region 41 is relatively large, the absorption core in the rear side region S3 can be deformed so as to overlap the absorption core in the excretory opening contact region S1. Moreover, it is also possible to deform | transform so that the absorption core of back side area | region S3 may overlap under the absorption core of excretion opening | mouth contact | abutting area | region S1.

  FIG. 12 shows a state in which the rear area S3 of the absorbent article receives a force that rotates to the left and right about the center of the excretory opening contact area S1. In this state, since the length of the first intermediate region 41 in the front-rear direction is relatively large, the rear side region S3 is deformed so as to rotate a predetermined angle left and right with the excretory opening contact region S1 as a base point. Can do.

  Furthermore, since the length in the front-rear direction of the first intermediate region 41 is relatively large, the rear region S3 of the absorbent article 1 is independent of the excretory opening contact region S1 and around the rotation axis CL of FIG. Deformation that rotates is also possible.

  When the wearer turns over or is walking, the rear side region S3 receives a force that rotates with respect to the excretory opening contact region S1 or moves to the left or right according to the movement of the leg or the buttocks. Receive the power. According to the absorbent article having the above configuration, the rear side area S3 can freely move independently of the excretory opening contact area S1 in accordance with such a force. As a result, both the excretory opening contact area S1 and the rear side area S3 can be continuously fitted to the wearer even while the wearer is moving. Thereby, a sense of security and good attachment feeling can be given to the wearer.

  Since the length of the first intermediate region 41 in the front-rear direction L is 10 mm or more, the absorbent article can sufficiently absorb the portion where the bulge of the buttock is crushed at the first intermediate region 41. Moreover, since the length of the front-back direction of the 1st intermediate | middle area | region 41 becomes long enough, during a wearer's operation | movement, the excretion opening | mouth contact | abutting area | region S1 and the rear side area | region S3 become easy to change independently, and a wearer Even during the operation, the excretory opening contact area S1 and the rear side area S3 can be easily maintained in a state fitted to the body.

  According to one embodiment, the length in the front-rear direction L of the first intermediate region 41 is 40 mm or less. Thereby, the anxiety with respect to an absorptivity can be suppressed and the absorbent article which is excellent in wearing comfort can be provided (refer also to the comparative evaluation mentioned later).

  According to one embodiment, the length of the first intermediate region 41 in the front-rear direction L is equal to the length of the second region of the absorber of the first region R1 adjacent to the first curved portion 41a and the second region R2. It is longer than the thickest portion of the absorber adjacent to the portion 41b. Thereby, it can make it easier to deform | transform so that the absorption core of back side area S3 may overlap on the absorption core of excretion opening | mouth contact | abutting area S1.

  According to one embodiment, the first curved portion 41a, the second curved portion 41b, and the first intermediate region 41 extend from one end of the absorbent core to the other end in the width direction W. Thereby, it becomes easy to deform | transform so that the absorption core of rear side area | region S3 may overlap with the absorption core of excretion opening | mouth contact | abutting area | region S1 (refer FIG. 11). Further, the rear side region S3 can be easily deformed so as to rotate by a predetermined angle left and right with the excretory opening contact region S1 as a base point (see FIG. 12).

  According to one embodiment, the distance X between the center in the width direction W of the first curved portion 41a and the center in the front-rear direction L of the excretory opening contact area S1 is not less than 25 mm and not more than 80 mm. As a result of various investigations by the inventors of the present application, the deformation start point on the crotch side in the buttocks is often located more than 25 mm behind the center in the front-rear direction L of the excretory opening contact region S1. Therefore, when the distance X between the center in the width direction W of the first curved portion 41a and the center in the front-rear direction L of the excretory opening contact area S1 is 25 mm or more, the first curved portion 41a is used as a deformation starting point on the crotch side of the buttocks. Or the first intermediate region 41 is located. Further, in order to prevent the first curved portion 41a and the first intermediate region 41 from being located in the portion where the body pressure of the buttocks is most applied, the center in the width direction W of the first curved portion 41a and the front and rear of the excretory opening contact region S1 It is preferable that the distance X with respect to the center of the direction L is 80 mm or less. Thereby, a wearer's discomfort can be reduced.

  According to one embodiment, the 1st music part 41a and the 2nd music part 41b are curving convexly toward back in plane view. The part curved in a convex shape toward the rear bulges in a convex shape toward the rear together with the underwear when lying on its back, and is pushed out in a direction away from the body. When the first music part 41a, the second music part 41b, and the first intermediate area 41 are separated from the body, the first music part 41a, the second music part 41b, and the first intermediate area 41 can absorb the deformation on the back. Thus, the first region R1 and the second region R2 are maintained in a shape that follows the roundness of the body, and the entire absorbent article is disposed along the roundness of the body. Moreover, as shown in FIG.5 and FIG.11, in the state (wearing state) where the rear side area | region S3 stood up with respect to the excretion opening | mouth contact | abutting area | region S1, the 1st music part 41a and the 2nd music part 41b are planar view. Being convexly curved toward the rear, the rear side region S3 can be easily deformed so as to rotate around the central axis CL in FIG.

  According to one embodiment, the absorbent article 1 has a non-skin surface sheet 20 provided on the non-skin surface side of the absorbent body. The non-skin surface sheet 20 is provided with adhesive regions 61, 62, 63, 64 having an adhesive for stopping the absorbent article 1 in underwear. A non-adhesive area where no adhesive is provided is an area that at least partially overlaps the first intermediate area 41 and extends from one end to the other end of the absorbent article in the width direction W (adhesive area 61 and adhesive). The area between the area 62). Thereby, even if a wearer's buttocks protrude and the force from a buttocks is added to the 1st intermediate | middle area | region 41, the 1st intermediate | middle area | region 41 deform | transforms independently of underwear and can absorb the force. Therefore, it is difficult to convey the protruding force due to the crushing of the wearer's buttocks to the undergarment, and it is easy to maintain the fit of the absorbent article.

  According to one embodiment, the stretchable member 90 that expands and contracts at least in the front-rear direction L is joined to the side seat 12, and the effective length portion Le where the stretchability of the stretchable member 90 is expressed in the front-rear direction L. The first region R1 extends from the first region R1 across the first intermediate region 41. Since the rigidity of the first intermediate region 41 is low, the first intermediate region 41 is contracted in the front-rear direction by the contracting action of the elastic member 90 in the natural state. Furthermore, since there is a non-adhesive region where no adhesive is present at the first intermediate region 41, the absorbent article is attached to the underwear with the first intermediate region 41 contracted in the front-rear direction L as a result. Thereafter, when the wearer pulls up the undergarment, the contracted portion of the first intermediate region 41 grows along with the stretch of the undergarment. Thereby, when a wearer wears underwear, the 1st middle field 41 will be in the state where it extended (the state with few wrinkles by contraction), and can give the wearer good comfort. In general, during or after the attachment of the undergarment, the stretch of the undergarment may place a load on the adhesive region and the absorbent article may be peeled off from the undergarment. However, in the present embodiment, the non-adhesive region where no adhesive is present is a region that buffers the force according to the elongation of the undergarment, so that the absorbent article is prevented from peeling off from the undergarment according to the elongation of the undergarment. .

  According to one embodiment, the absorbent article has a hip flap adhesive region 64 that is provided on the hip flap and has an adhesive for fastening the hip flap to the undergarment. The rear side edge of the effective length portion Le of the elastic member 90 is disposed in front of the rear side edge of the hip flap adhesive region 64. As a result, the elastic force of the elastic member 90 is not applied to the hip flap adhesive region 64 strongly. Thereby, it can suppress that the adhesive force with the underwear by the hip flap adhesive region 64 loses to the elastic force of the elastic member 90, and the hip flap adhesive region 64 peels off from the underwear.

  According to one embodiment, the absorbent body has a middle-high portion 33 located on the inner side in the width direction with respect to the outer edge of the absorbent body in the excretory opening contact area S1. The thickness of the middle-high part 33 is thicker than the thickness of the outer edge of the absorber in the first region R1. The middle-high portion 33 is adjacent to the first curved portion 41a in the first region R1. When the middle and high portions 33 of the first region R1 and the first curved portion 41a are adjacent to each other, the rigidity difference and the thickness difference between the first region R1 and the first intermediate region 41 are increased, and a clearer deformation starting point is formed. Is done. Therefore, the first intermediate region 41 and the first region R1 can be arranged along the body in different shapes.

  According to one embodiment, the absorptive article is provided with the 1st pressing part 81 by which the absorber was compressed in the thickness direction. The first pressing part 81 is disposed along the outer edge of the middle / high part 33. Thereby, the force from a wearer's leg is added to the 1st pressing part 81. FIG. The 1st pressing part 81 becomes a base point of a deformation | transformation, and deform | transforms so that the middle-high part 33 may fit a wearer's inseam (refer FIG. 6).

  According to one embodiment, in the first intermediate region 41, a non-joined region where the skin sheet 10 and the core wrap 32 are not joined extends continuously along the width direction. Thereby, even if the 1st intermediate | middle area | region 41 deform | transforms flexibly, since the freedom degree of the skin surface sheet 10 with respect to the absorber of the 1st intermediate | middle area | region 41 is high, the discomfort given to a wearer can be suppressed.

  According to one embodiment, the core wrap 32 has a first wrap portion on the skin surface side from the absorbent core 31 and a second wrap portion on the non-skin surface side from the absorbent core 31. The first wrap portion and the second wrap portion are joined to each other at the first intermediate region 41 in a state of being compressed through the absorption core 32 or without the absorption core 32 (see FIG. 4). . The first intermediate region 41 is a portion that flexibly deforms with the movement of the wearer. Therefore, the 1st intermediate region 41 and its vicinity become a part which the absorption core 31 is easy to collapse or bend with a wearer's operation | movement. In the present embodiment, at the first intermediate region 41, the first wrap portion and the second wrap portion are joined together in a compressed state via the absorbent core 32 or without the absorbent core 32. . Therefore, the shape of the core wrap 32 is maintained for a long time, and it is possible to continuously ensure the fit of the absorbent article.

  According to one embodiment, the absorbent article extends outward in the width direction from the outer edge of the absorbent body in the width direction W, and can be folded back during use, and on the outer side in the width direction in the rear side region S3. And an inflated hip flap 4. At least a part of the first intermediate region 41 is provided between the rear end of the wing 3 and the front end of the hip flap 4. The region between the wings 3 (excretion port contact region S1) and the region of the hip flap 4 are regions that are desired to be in close contact with the wearer's skin. Since the first intermediate area 41 is provided between the area between the wings 3 (the excretory opening contact area S1) and the area of the hip flap 4, both the excretion opening contact area S1 and the hip flap area are provided. The absorbent article can be deformed at the first intermediate region 41 while being in close contact with the wearer's skin.

  According to one embodiment, the 1st bending guidance part 40 extended along the center line CL in back side field S3 and constituted so that an absorptive article can be bent is provided. The rear side region S3 is a position facing the wearer's buttocks, and the center in the width direction of the rear side region S3 faces the wearer's crack. The presence of the first bending guide portion 40 in the center in the width direction of the rear side region S3 allows the first bending guide portion 40 to be worn by the wearer when the inner force in the width direction is applied to the absorbent article. It becomes easy to protrude along the crack. Thereby, the absorptive article which is easy to fit with a wearer's buttocks can be provided.

  According to one embodiment, the first bending guide portion 40 is connected to the first intermediate region 41. Thereby, the second region R is divided into left and right with the center line CL interposed therebetween. Therefore, the left portion of the second region R and the left portion of the third region R are easily deformed independently, leading to improved fit. In addition, since the absorbent material in the second region R is suppressed from moving beyond the center line CL, local concentration of the absorbent material can be prevented.

  According to one embodiment, the 1st bending guidance part 40 has reached the back rather than the center of back side field S3 in the direction L of order. During wearing, the 1st bending induction | guidance | derivation part 40 protrudes toward a wearer's skin side. Since the 1st bending induction | guidance | derivation part 40 is extended along the front-back direction L in back side area S3, it is easy to fit along a wearer's crack.

  According to one embodiment, the core wrap 32 has a first wrap portion on the skin surface side from the absorbent core 31 and a second wrap portion on the non-skin surface side from the absorbent core 31. In the 1st bending induction | guidance | derivation part 40, the non-joining area | region where the skin sheet 10 and the core wrap 32 are not joined is extended continuously along the front-back direction. The 1st wrap part and the 2nd wrap part are joined in the state where it was mutually compressed in the 1st bending guidance part 40 via the absorption core 31, or without passing through the absorption core 31. As described above, the first bend guiding portion 40 and its vicinity are easily deformable portions. Therefore, the 1st bending induction | guidance | derivation part 40 and its vicinity become a part where the absorption core 31 is easy to collapse or bend with a wearer's operation | movement. In the present embodiment, at the first bending guide portion 40, the first wrap portion and the second wrap portion are joined in a compressed state via the absorbent core 32 or without going through the absorbent core 32. ing. Therefore, the shape of the core wrap 32 is maintained for a long time, and it is possible to continuously ensure the fit of the absorbent article.

  According to one embodiment, a pair of longitudinal squeezing parts 82 are provided that extend in the front-rear direction L on both sides of the first bending guide part 40 and in which the absorber is squeezed. Since the pair of longitudinal compression portions 82 have relatively high rigidity, they serve as a base point for deformation of the absorbent core 31. The 1st bending induction | guidance | derivation part 40 pinched | interposed between a pair of longitudinal pressing parts 82 becomes easy to protrude to a wearer's body side more. Thereby, the absorbent article which can be more familiar with a wearer's body and can give a more comfortable fit to a wearer can be provided.

  According to one embodiment, the pair of longitudinal pressing portions 82 does not reach the first intermediate region 41. A pair of longitudinal pressing parts 82 become a part with comparatively high rigidity. Since the portion having such a high rigidity is not formed in the first intermediate region 41, the absorbent article is more easily deformed at the first intermediate region 41.

  According to one embodiment, the absorber extends from the first bending guide portion 40 to the outside in the width direction W in the rear side region S3, and is configured to be able to bend the absorbent article. Part 43. The second bending guide portion 43 forms a deformation base point extending along the width direction W. Since the absorption core 31 of the rear side region S3 can be deformed with the second bending guide portion 43 as a base point, the absorbent article 1 can easily fit along the roundness along the front-rear direction L of the body. In particular, as shown in FIG. 5, when the first bending guide portion 40 protrudes along the fissure, it may be difficult to deform the rear side region S3 along the roundness along the longitudinal direction L of the body. is there. Even in this case, the rear bending area S3 can be easily deformed in accordance with the roundness along the front-rear direction L of the body by the second bending guide portion 43 serving as a deformation base point. Thereby, the absorbent article which can be more familiar with a wearer's body and can give a more comfortable fit to a wearer can be provided.

  According to one embodiment, a pair of longitudinal squeezing parts 82 are provided that extend in the front-rear direction L on both sides of the first bending guide part 40 and in which the absorber is squeezed. The pair of longitudinal squeezing portions 82 are formed at the second bending guide portion 43 with an interval in the front-rear direction L. A pair of longitudinal pressing parts 82 become a part with comparatively high rigidity. Thus, since the part with high rigidity is formed in the 2nd bending guide part 43 at intervals, an absorbent article becomes easier to deform | transform at the 2nd bending guide part 43. FIG.

  According to one embodiment, the first bending guide portion 40 includes a second intermediate region 42 extending along the center line CL, a third bent portion 42a extending in the front-rear direction L across the second intermediate region 42, and a second bent portion 42a. 4 music parts 42b. The 3rd music part 42a and the 4th music part 42b are constituted so that an absorptive article can bend in the thickness direction. The basis weight of the absorbent material in the second intermediate region 42 is lower than the basis weight of the absorbent material on the outer side in the width direction W from the first bending guide portion 40. Accordingly, the first bending guide part 40 is easily bent at the second intermediate region 42 with the third curved part 42a and the fourth curved part 42b as the base points. Thereby, rear side area S3 becomes easy to fit a wearer's crack.

(4) Absorbent article according to modified example Next, an absorbent article according to the modified example will be described with reference to FIG. In the description of the absorbent article according to the modification, a configuration different from the above-described embodiment will be described, and the same reference numerals are used for the same configuration as the above-described embodiment, and the description will be omitted.

  The absorbent article 1 which concerns on a modification has the pressing part which compressed the absorber 30 at least in the thickness direction. As for a pressing part, the surface sheet 11 and the absorber 30 are compressed by the thickness direction. The pressing part which concerns on a modification is arrange | positioned in the back side rather than the 1st pressing part 81 arrange | positioned at 1st area | region R1, the 2nd pressing part 82 arrange | positioned at 2nd area | region R2, and the 2nd pressing part 82. And a rear-side compressed portion 84.

  The longitudinal pressing part 82 is provided on both sides of the center line CL, more specifically, the first bending guiding part 40 in the rear side region S3. 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. It is preferable that the longitudinal pressing portion 82 does not reach the first intermediate region 41.

  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.

(5) Other Embodiments The absorbent article of the present embodiment is a sanitary napkin for night use, but may be a sanitary napkin for day use as another embodiment. Further, the sanitary napkin may not include a hip flap.

  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.

(6) Comparative Evaluation Next, comparative evaluation of the length of the first intermediate region 41 in the front-rear direction L will be described. Table 1 shows a comparative evaluation result of the length of the first intermediate region 41. In the test for comparative evaluation, the absorbent articles of Examples 1 to 4 and the absorbent articles of Comparative Examples 1 to 3 were compared, and the anxiety about the fit maintenance state and the absorbency by appearance was evaluated. Although the absorbent article of Examples 1-4 and the absorbent article of Comparative Examples 1-3 differ in the length of the front-back direction of the 1st intermediate | middle area | region 41, the other structure is the same.

  Question 1 “Is it possible to maintain the fit compared to the napkin that I usually use?” A sample in which the ratio of the number of people who answered “can be maintained” to the question 1 was 65% or higher was evaluated as ◯ with good sensory evaluation. In addition, a sample in which the ratio of the number of people who answered “maintained” to Question 1 was less than 65% was evaluated as “x” because the sensory evaluation was not good.

  Question 2 “Is it comfortable to wear compared to the napkins I usually use? A sample in which the ratio of the number of people who answered “very good, somewhat good” to the question 2 was 65% or more was evaluated as ◯ with good sensory evaluation. In addition, among the samples evaluated as ◯, a sample in which the ratio of the number of people who answered that it was very good exceeded 20% of the total number of people was evaluated as ◎ because it was evaluated as being more comfortable to wear.

  Question 3 “Is there a less anxiety about the absorbency of the appearance compared to the napkin that I usually use? A sample in which the ratio of the number of persons who answered that the answer to the question 2 was “little anxiety” or “no anxiety” was 65% or more was good, and the evaluation was good. In addition, a sample in which the ratio of the number of people who answered “little anxiety” or “no anxiety” to Question 1 was evaluated as “x” because the sensory evaluation was not good.

  In the absorbent articles according to Examples 1 to 4, the length of the first intermediate region in the front-rear direction is 10 to 50 mm, and any of maintenance evaluation of fit property, good wearing comfort, and evaluation of anxiety about absorbability I was able to get a good result. Furthermore, the absorbent article which concerns on Examples 1-3 was able to obtain the result that it was more excellent in wearing comfort. From the result, it was found that the length of the first intermediate region in the front-rear direction is preferably 10 mm or more and 40 mm or less, more preferably 10 mm or more and 30 mm or less. More specifically, it has been found that good results can be obtained with respect to the fit property when the length of the first intermediate region in the front-rear direction is 10 mm or more. In addition, it was found that when the length of the first intermediate region is 40 mm or less, anxiety about absorbability can be suppressed, and the wearing comfort is excellent. Furthermore, it turned out that it is more excellent in wearing comfort because the length of the first intermediate region is 30 mm or less. In addition, when the length of the 1st intermediate | middle area | region was 50 mm, it turned out that the length which the center of a rear side area protrudes is too long, and gives a wearer a discomfort.

  Next, the amount of protrusion to the crotch side of the collapsed portion of the buttocks of the wearer who slept on his back was measured. The amount of protrusion is the crotch end (P1 in FIG. 4 (c)) of the crushed portion of the buttocks of the wearer lying on his back and the leg end of the buttocks (FIG. 4 (c)). ) P2). The amount of protrusion of five testers was measured. The measurement results are shown in Table 2.

  From the measurement results, it was found that the protruding amount of the buttocks was 10 mm to 30 mm. Therefore, covering the bulge from the crotch side end of the crushed part of the wearer's buttocks to the protruding leg side end of the buttocks by the length of the first intermediate region in the front-rear direction being 10 mm or more I found out that Further, if the length of the first intermediate region 41 in the front-rear direction is about 30 mm, the force applied to the absorbent article due to the protrusion of the collar portion can be more reliably released by the first bending guide portion 40. Considering individual differences in the wearing position of the absorbent article, the length in the front-rear direction of the first intermediate region 41 is preferably 40 mm or less, as shown in the test results described above.

  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 3: Wing 4: Hip flap 10: Skin sheet 20: Non-skin sheet 30: Absorbent body 31: Absorbent core 32: Core wrap 33: Middle and high part 40: First folding guide part 41: First Intermediate area 41a: 1st music part 41b: 2nd music part 42: 2nd intermediate area 42a: 3rd music part 42b: 4th music part 43: 2nd bending induction part 61: 1st main body adhesion area 62: 1st 2 main body adhesion area | region 81: front side pressing part 82: longitudinal pressing part L: front-back direction W: width direction T: thickness direction S1: excretory opening contact area S2: front side area S3: rear side area CL: center line

Claims (21)

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 absorbent article having an absorbent core disposed at least in the excretory opening contact area and the rear side area and having an absorbent core containing an absorbent material,
A first music part extending in the width direction behind the excretory opening contact area, and a second music part extending in the width direction behind the first music part;
The first music part and the second music part are configured so that the absorbent article can bend in the thickness direction,
A first area adjacent to the first music part in front of the first music part, a second area adjacent to the second music part in the rear of the second music part, and the first music in the front-rear direction. And a first intermediate region located between the portion and the second music portion,
The basis weight of the absorbent material in the first intermediate region is lower than the basis weight of the absorbent material in the first region and the second region,
The first curved portion, the second curved portion, and the first intermediate region, from a center line connecting the centers in the width direction of the absorbent article, an outer edge of the absorbent core and the center line in the width direction Extends beyond the midpoint of
The length in the front-rear direction of the first intermediate region is 10 mm or more and 40 mm or less,
The said 1st music part and the said 2nd music part are absorbent articles which curve in convex shape toward back in planar view. 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 absorbent article having an absorbent core disposed at least in the excretory opening contact area and the rear side area and having an absorbent core containing an absorbent material,
A first music part extending in the width direction behind the excretory opening contact area, and a second music part extending in the width direction behind the first music part;
The first music part and the second music part are configured so that the absorbent article can bend in the thickness direction,
A first area adjacent to the first music part in front of the first music part, a second area adjacent to the second music part in the rear of the second music part, and the first music in the front-rear direction. And a first intermediate region located between the portion and the second music portion,
The basis weight of the absorbent material in the first intermediate region is lower than the basis weight of the absorbent material in the first region and the second region,
The first curved portion, the second curved portion, and the first intermediate region, from a center line connecting the centers in the width direction of the absorbent article, an outer edge of the absorbent core and the center line in the width direction Extends beyond the midpoint of
The length in the front-rear direction of the first intermediate region is 10 mm or more and 40 mm or less,
It has a non-skin surface sheet provided on the non-skin surface side of the absorber,
The non-skin surface sheet is provided with an adhesive region having an adhesive for stopping the absorbent article in underwear,
The non-adhesive area | region where the said adhesive is not provided is an area | region which at least partially overlaps with the said 1st intermediate | middle area | region, and is extended from the one end of the said absorbent article in the said width direction to the other end. . 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 absorbent article having an absorbent core disposed at least in the excretory opening contact area and the rear side area and having an absorbent core containing an absorbent material,
A first music part extending in the width direction behind the excretory opening contact area, and a second music part extending in the width direction behind the first music part;
The first music part and the second music part are configured so that the absorbent article can bend in the thickness direction,
A first area adjacent to the first music part in front of the first music part, a second area adjacent to the second music part in the rear of the second music part, and the first music in the front-rear direction. And a first intermediate region located between the portion and the second music portion,
The basis weight of the absorbent material in the first intermediate region is lower than the basis weight of the absorbent material in the first region and the second region,
The first curved portion, the second curved portion, and the first intermediate region, from a center line connecting the centers in the width direction of the absorbent article, an outer edge of the absorbent core and the center line in the width direction Extends beyond the midpoint of
The length in the front-rear direction of the first intermediate region is 10 mm or more and 40 mm or less,
A wing that extends outward in the width direction from the outer edge of the absorbent body in the width direction and can be folded back during use; and a hip flap that swells outward in the width direction in the rear side region;
At least a part of the first intermediate region is an absorbent article provided between a rear end of the wing and a front end of the hip flap.   The length of the first intermediate region in the front-rear direction is such that the absorber of the portion of the first region adjacent to the first curved portion and the portion of the second region adjacent to the second curved portion. The absorbent article according to any one of claims 1 to 3, wherein the absorbent article is longer than a thickest portion of the absorber.   The said 1st music part, the said 2nd music part, and the said 1st intermediate | middle area | region are extended in the said width direction from the one end of the said absorption core to the other end. Absorbent article.   The absorption according to any one of claims 1 to 5, wherein a distance between the center in the width direction of the first curved portion and the center in the front-rear direction of the excretory opening contact region is 25 mm or more and 80 mm or less. Sex goods. Having a skin sheet provided on the skin side of the absorbent body,
The skin sheet includes a top sheet that covers the absorber, and a side sheet that extends outward from the end region of the top sheet in the width direction.
An elastic member that expands and contracts at least in the front-rear direction is joined to the side sheet,
The effective length portion in which the stretchability of the stretchable member is expressed extends from the first region to the second region across the first intermediate region in the front-rear direction. Absorbent article. A hip flap that swells outward in the width direction in the rear side region;
A hip flap adhesive region provided on the hip flap and having an adhesive for fastening the hip flap to underwear,
The absorbent article according to claim 7, wherein a rear side edge of the effective length portion of the stretchable member is disposed in front of a rear side edge of the hip flap adhesive region. The absorber has a middle and high portion located in the width direction inner side than the outer edge of the absorber in the excretory opening contact region,
The thickness of the middle high portion is thicker than the thickness of the outer edge of the absorber in the first region,
The absorbent article according to any one of claims 1 to 8, wherein the middle-high part is adjacent to the first curved part in the first region. The absorbent body includes a first compressed portion compressed in the thickness direction,
The absorptive article according to claim 9 in which said 1st pressing part is arranged along the outside edge of said middle-high part. A skin sheet provided on the skin side of the absorbent body;
A core wrap for wrapping the absorbent core,
The non-joining area | region where the said skin sheet and the said core wrap are not joined in the said 1st intermediate | middle area | region has extended continuously along the said width direction. Absorbent articles. Having a core wrap around the absorbent core;
The core wrap includes a first wrap portion on the skin surface side from the absorbent core, and a second wrap portion on the non-skin surface side from the absorption core,
The first wrap portion and the second wrap portion are joined in a compressed state to each other at the first intermediate region via the absorbent core or without going through the absorbent core. The absorbent article in any one of Claims 1-11.   The first bending guiding portion configured to extend along the center line in the rear side region and bend the absorbent article is provided in any one of claims 1 to 7. The absorbent article as described.   The absorbent article according to claim 13, wherein the first bending guide part is connected to the first intermediate region.   The absorptive article according to claim 13 or 14 in which said 1st bending guidance part has reached the back side rather than the center of said back side field in said front and rear direction. A skin sheet provided on the skin side of the absorbent body;
A core wrap for wrapping the absorbent core,
The core wrap includes a first wrap portion on the skin surface side from the absorbent core, and a second wrap portion on the non-skin surface side from the absorption core,
In the first bending guide portion, a non-joined region where the skin sheet and the core wrap are not joined is continuously extended along the front-rear direction,
The first wrap portion and the second wrap portion are joined to each other in a compressed state at the first bending guide portion via the absorption core or without the absorption core. The absorbent article in any one of Claims 13-15.   The absorption according to any one of claims 13 to 16, wherein a pair of longitudinal squeezing parts are provided that extend in the front-rear direction on both sides of the first bending guide part and are squeezed with the absorber. Sex goods.   The absorbent article according to claim 17, wherein the pair of longitudinal pressing portions does not reach the first intermediate region.   The absorbent body includes a second bending guide portion configured to extend outward from the first bending guide portion in the width direction in the rear side region and bend the absorbent article. The absorbent article according to any one of claims 13 to 18. The absorbent body has a second bending guide portion configured to extend from the first bending guide portion to the outside in the width direction in the rear side region and bend the absorbent article.
The absorbent article according to prior Symbol pair of longitudinally compressing portion is formed at intervals in the longitudinal direction at said second folding induction unit, according to claim 17 or claim 18. The first bending guide portion includes a second intermediate region extending along the center line, and a third curved portion and a fourth curved portion extending in the front-rear direction across the second intermediate region,
The third music part and the fourth music part are configured such that the absorbent article can bend in the thickness direction,
The basis weight of the absorbent material in the second intermediate region is lower than the basis weight of the absorbent material on the outer side in the width direction than the first bending guide portion. Absorbent article.

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