JP5859621B1 - Absorbent articles - Google Patents

Abstract

An absorbent article capable of suppressing rear leakage in a state where a wearer lies on his back. An absorbent article (1) includes a first curved portion (41) extending in the width direction on the rear side of the front and rear center of the wing (3) and on the front side of the rear end edge of the absorbent core, and a first curved portion. And a second curved portion 42 that is located rearward and extends in the width direction. A first region R1 adjacent to the first music part in front of the first music part, a second region R2 adjacent to the second music part in the rear of the second music part, and the first music part and the second in the front-rear direction. An intermediate region R3 located between the curved portions. The weight of the absorbent material in the middle region is lower than the weight of the absorbent material in the first region and lower than the weight of the absorbent material in the second region. The length of the intermediate region in the front-rear direction is longer than the thickness of the absorber adjacent to the first curved portion of the first region. [Selection] Figure 1

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

 However, it has been found that the absorbent article described above has the following problems. The present applicant has investigated various deformations of the wearer's body in the sleeping state. As a result, it was found that the wearer in a sleeping state deformed by body pressure, and the absorbent article deformed into an unintended state.

 Specifically, the swell of the buttocks is crushed for the wearer lying on his back. The part where the bulge of the buttocks is crushed moves to the crotch side. The absorbent article arranged to face the wearer's crotch region is pressed by the portion where the bulge of the buttocks is crushed and deforms away from the wearer's body. As a result, a gap may be generated between the wearer's crotch region and the absorbent article, and rear leakage may occur.

  This invention is made | formed in view of the above-mentioned subject, and it aims at providing the absorbent article which can suppress a back leak in the state in which the wearer fell on his back.

  In order to solve the above-described problem, an absorbent article (absorbent article 1) according to the present disclosure has a front-rear direction (front-rear direction L) and a width direction (width direction W) orthogonal to each other, and an absorbent material is laminated. An absorbent body (absorbent body 30) having an absorbent core (absorbent core 31), a skin surface sheet (skin surface sheet 10) located closer to the skin facing surface than the absorbent body, and a non-skin facing surface than the absorbent body A main body portion (main body portion 2) having a non-skin surface sheet (non-skin surface sheet 20) positioned on the side, and extends outward in the width direction from the outer edge of the main body portion, and the non-skin surface sheet side in use An absorbent article having a wing that can be folded back into the wing, wherein the wing is located behind the center in the front-rear direction of the wing and forward of the rear end edge of the absorbent core in the width direction. From the first music part (first music part 41) that extends and the first music part And a second music part (second music part 42) extending rearward and extending in the width direction, wherein the absorbent article has a thickness direction in the first music part and the second music part. 1st area (1st field R1) adjacent to the 1st music part in the front of the 1st music part, and the 2nd in the back of the 2nd music part. A second region (second region R2) adjacent to the curved portion, and an intermediate region (intermediate region R3) located between the first curved portion and the second curved portion in the front-rear direction, The basis weight of the absorbent material in the intermediate region is lower than the basis weight of the absorbent material in the first region and lower than the basis weight of the absorbent material in the second region, and the length of the intermediate region in the front-rear direction is A portion of the first region adjacent to the first curved portion is longer than the thickness of the absorber. The gist.

  Moreover, the absorbent article (absorbent article 1) according to the present disclosure has a front-rear direction (front-rear direction L) and a width direction (width direction W) orthogonal to each other, and an absorbent core (absorbent core) laminated with an absorbent material 31) an absorber (absorber 30), a skin sheet (skin sheet 10) positioned on the skin-facing surface side of the absorber, and a non-skin positioned on the non-skin-facing surface side of the absorber A main body portion (main body portion 2) having a face sheet (non-skin face sheet 20), and a wing that extends outward in the width direction from the outer edge of the main body portion and can be folded back to the non-skin face sheet side during use. A first curved portion extending in the width direction on the rear side of the wing in the front-rear direction and on the front side of the rear end edge of the absorbent core. 1st music part 41), located behind the said 1st music part, and the front And a second music part (second music part 42) extending in the width direction, and the first music part and the second music part so that the absorbent article can bend in the thickness direction. A first region adjacent to the first music part (first region R1) in front of the first music part, and a second adjacent to the second music part in the rear of the second music part. A region (second region R2) and an intermediate region (intermediate region R3) located between the first and second curved portions in the front-rear direction, and the absorbent material of the intermediate region The basis weight is lower than the basis weight of the absorbent material in the first region and lower than the basis weight of the absorbent material in the second region, and the length in the front-rear direction of the intermediate region is 10 mm or more and 50 mm or less. It is a summary.

  ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which can suppress a back leak in the state in which the wearer laid on his back can be provided.

It is a top view of an absorptive article concerning an embodiment. It is a rear view of the absorbent article shown in FIG. It is a schematic cross section of the AA cross section shown in FIG. It is a schematic diagram for demonstrating the mounting state of the absorbent article shown in FIG. It is a top view of an absorptive article concerning a modification.

(1) Whole structure of absorbent article With reference to FIG. 1 thru | or FIG. 3, 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 taken along line AA shown in FIG. 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 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 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 extend outward in the width direction W from the outer edge 2E of the main body 2. The outer edge 2E of the main body 2 matches 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 wing 3 includes a side sheet 12 and a non-skin surface sheet 20. The center 3LC in the front-rear direction of the wing 3 is arranged 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 inner edge 12 </ b> E of the side seat 12 is folded back along the front-rear direction L in the width direction W. An elastic member 91 that expands and contracts in the front-rear direction L is disposed between the folded side sheets 12. The inner edge 12 </ b> E of the side sheet 12 is not joined to the top sheet 11. The inner edge 12E of the side seat 12 and the stretchable member 91 constitute an upright leakproof cuff. The stretchable member 91 is disposed across a first music part 41 and a second music part 42 described later in the front-rear direction L. More specifically, the front end edge 91 </ b> F of the stretchable member 91 is positioned forward of the first curved portion 41, and the rear end edge 91 </ b> R of the stretchable member 91 is positioned rearward of the second curved portion 42.

  As shown in FIG. 2, a non-skin facing surface of the non-skin surface sheet 20 is provided with an adhesive region 60 to which an adhesive for stopping the absorbent article on the underwear S is applied. The adhesive region 60 includes a first main body adhesive region 61 and a second main body adhesive region 62 disposed in the main body 2, a wing adhesive region 63 disposed in the wing 3, and a hip flap adhesive region disposed in the hip flap 4. 64. 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 region 60 is covered with a release sheet 65 in a state before use. The release sheet 65 prevents the adhesive from deteriorating before use. The release sheet 65 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 | attachment area | region deteriorates before use with the packaging sheet which wraps an absorbent article separately.

  The absorbent article 1 is provided with a first music part 41 and a second music part 42. The first music part 41 and the second music part 42 are located on the rear side of the center 3LC in the front-rear direction of the wing 3 and on the front side of the rear end edge of the absorbent core 31. The first curved portion 41 and the second curved portion 42 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 41 in front of the first music portion 41, a second region R2 adjacent to the second music portion 42 in the rear of the second music portion 42, and And an intermediate region R3 located between the first music part 41 and the second music part 42 in the front-rear direction L. The first region R <b> 1 is a region from the front end edge 30 </ b> F of the absorber 30 to the first curved portion 41. The second region R2 is a region from the rear edge 30R of the absorber 30 to the second curved portion 42. The intermediate region R3 is a region between the first music part 41 and the second music part 42.

  The basis weight of the absorbent material in the intermediate region R3 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 intermediate region R3 may be a region where the basis weight of the absorbent material is lower than that of the first region R1 or the like, and may be a region where the basis weight is 0, or the design basis weight is 0. The area | region where the absorption material mixed from area | region R1 etc. is arrange | positioned may be sufficient.

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

  The second music part 42 is located behind the first music part 41. The 2nd music part 42 is a boundary from which rigidity changes. The rigidity of the area on the front side of the second curved part 42 is different from the rigidity of the area on the rear side of the second curved part 42. More specifically, the basis weight of the absorbent material in the region on the front side of the second curved portion 42 is lower than the basis weight of the absorbent material in the region on the rear side of the second curved portion 42. Therefore, the rigidity on the front side of the second music part 42 is lower than the rigidity on the rear side of the second music part 42.

  The length of the intermediate region R3 in the front-rear direction L is longer than the thickness of the absorber 30 in the portion adjacent to the first curved portion 41 in the first region R1. In the configuration in which the thickness of the absorber 30 in the first region R1 changes, the length in the front-rear direction of the intermediate region R3 is larger than the thickness of the absorber 30 in the portion adjacent to the first curved portion 41. What is necessary is just to be comprised long, and it may be comprised shorter than the thickness of the other part (for example, center part of the front-back direction) of 1st area | region.

  Moreover, it is preferable that the length of the intermediate | middle area | region R3 is 10 mm or more and 50 mm or less in the front-back direction. In the configuration in which the length in the front-rear direction of the intermediate region R3 is changed, the length in the front-rear direction at the center in the width direction of the intermediate region R3 may be 10 mm or more and 50 mm or less. More preferably, the length of the intermediate region R3 in the front-rear direction is 10 mm or more and 30 mm or less.

  The distance L1 between the center 41WC in the width direction of the first curved portion 41 and the center 3LC in the front-rear direction of the wing is preferably 25 mm or more. Moreover, it is desirable that the distance L1 between the center 41WC in the width direction of the first curved portion 41 and the center in the front-rear direction of the wing is 80 mm or less. In addition, in the structure in which the 1st music part 41 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 41 and the center of the front-back direction of a wing is 25 mm or more and 80 mm or less If it is.

  The first music part 41 and the second music part 42 are curved in a convex shape toward the rear in plan view. More specifically, the center in the width direction of the first music part 41 is located behind the outer edge of the first music part 41. The center of the first music portion 41 in the width direction is a convex shape toward the rear. The center in the width direction of the second music part 42 is located behind the outer edge of the second music part 42. The center in the width direction of the second curved portion 42 is a convex shape toward the rear. In addition, the distance in the front-back direction of 42 of the 1st music part 41 and the 2nd music part may be constant, and may be changing.

  The first music part 41, the second music part 42, and the intermediate region R3 do not overlap the adhesive region 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 61 </ b> R of the first main body adhesive region 61 is positioned forward of the first curved portion 41, and the front end edge 62 </ b> F of the second main body adhesive region 62 is positioned rearward of the second curved portion 42.

  The outer edge 41 </ b> E of the first music part 41 and the outer edge 42 </ b> E of the second music part 42 are located on the outer edge of the absorbent core 31. That is, the 1st music part 41 and the 2nd music part 42 are formed over the width direction whole region of an absorption core. The absorbent core 31 is divided in the front-rear direction L by the first music part 41 and the second music part 42. In the absorbent body 30 of the present embodiment, the outer edge of the absorbent core 31 and the outer edge of the absorbent body 30 substantially coincide. Therefore, in the drawing, the outer edge 41E of the first curved portion 41 and the outer edge 42E of the second curved portion 42 are shown to coincide with the outer edge 30E of the absorbent body 30.

  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. In FIG. 1, the middle and high portions 33 are indicated by hatching. 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 R <b> 1 and is adjacent to the first curved portion 41.

  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.

  In the cross section along the front-rear direction L of the absorbent article 1 shown in FIG. 3, the rear surface 33RS of the middle-high portion 33 extending in the thickness direction T from the rear end edge 33R of the middle-high portion 33, the non-skin facing surface of the middle-high portion 33, Is greater than the angle β formed by the front surface 33FS of the middle-high portion 33 extending in the thickness direction T from the front edge 33F of the middle-high portion 33 and the non-skin facing surface of the middle-high portion 33. The angle α is an angle formed by the rear surface 33RS of the middle-high portion 33 and the non-skin facing surface of the middle-high portion 33 extending forward from the rear end edge 33R of the middle-high portion 33. Further, the angle β is an angle formed by the front surface 33FS of the middle-high portion 33 and the non-skin facing surface of the middle-high portion 33 extending rearward from the front end edge 33F of the middle-high portion 33.

  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.

  In addition, the measurement of “the angle of the middle and high parts of the absorber” in this specification is performed by the following measurement method. In the absorbent article packaged by the package, the package is opened, the folded absorbent article is unfolded, a photograph is taken from the side of the absorbent article, and the angles α and β shown in FIG. Measure with a protractor.

(2) Wearing state of absorbent article Next, the wearing state of the absorbent article 1 configured as described above will be described. 4 is a cross-sectional view based on the AA cross section of FIG. 1 in a state where the absorbent article 1 is attached to the wearer. FIG. 4A 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. 4B shows a state in which the cross-sectional view shown in FIG. 4A 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. 4B, for convenience of explanation, the wearer's body is not pressed by the bedding. . FIG. 4B 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.4 (c) has shown the state which the body of the wearer who laid on his back was pressed and deform | transformed by the bedding. In the state shown in FIG. 4C, the region overlapping the body and bedding line in FIG. 4B is deformed. 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 and swells from the base of the leg to the leg tip side. The 2nd music part 42 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 41 is arrange | positioned at the end part of the crotch side of the part where the collar part was crushed. Therefore, the intermediate region R3 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.

(3) Action / effect The center 3LC in the front-rear direction of the wing is a position facing the excretion opening of the wearer. A first music part 41 and a second music part 42 are provided behind the wing 3. A deformation starting point of the first music part 41 and a deformation starting point of the second music part 42 are formed at a position corresponding to the buttocks behind the excretion opening of the wearer. Therefore, the absorbent article 1 is flexibly deformed along with the deformation of the buttocks when the swelling of the buttocks is crushed.

  Further, an intermediate region R <b> 3 in which the basis weight of the absorbent material is relatively low is provided between the first music part 41 and the second music part 42. The intermediate region R3 is easily deformed flexibly because the basis weight of the absorbent material is low. When the crushed portion of the buttock moves to the crotch side, the deformation of the buttock is absorbed by the intermediate region R3, and the wearer can easily continue to apply the first region R1 and the second region R2. Further, the first region R1 and the second region R2 are divided by the intermediate region R3, and the propagation of force from the first region R1 to the second region R2 is suppressed.

  Furthermore, the length of the intermediate region R3 in the front-rear direction L is longer than the thickness of the absorber 30 in the portion adjacent to the first curved portion 41 in the first region R1. The deformation of the buttocks is absorbed by the intermediate region R3, and a step that absorbs the deformation of the buttocks is formed behind the first region R1. Thereby, the front side can be arranged to face the wearer's excretion opening with respect to the middle region R3, and the rear side can be arranged to face the wearer's buttocks with respect to the middle region R3. Therefore, the gap between the absorbent article and the body can be reduced, and rear leakage can be suppressed.

  Further, the length of the intermediate region R3 in the front-rear direction L is 10 mm or more. For example, when the length of the middle region in the front-rear direction is less than 10 mm, the portion where the bulge of the heel portion is crushed may not be sufficiently absorbed. On the other hand, when the length of the intermediate region R3 in the front-rear direction is 10 mm or more, the deformation of the collar portion can be effectively absorbed.

  The length of the intermediate region R3 in the front-rear direction L is 50 mm or less. When the length in the front-rear direction L of the intermediate region R3 is 50 mm or less, the body fluid that has flowed to the buttocks side can be absorbed by the second region R2 while absorbing deformation of the body by the intermediate region R3. Therefore, menstrual blood can be prevented from flowing to the buttocks side. On the other hand, if the length of the intermediate region R3 in the front-rear direction L is longer than 50 mm, the user feels anxiety that menstrual blood flows to the buttocks side, making it difficult to obtain a sense of security at the time of wearing.

  The length in the front-rear direction L of the intermediate region R3 is 10 mm or greater and 50 mm or less. When the length in the front-rear direction of the intermediate region R3 that is relatively easily deformed is not less than mm and not more than 50 mm, the intermediate region R3 can absorb body deformation by the intermediate region R3. The intermediate region R3 absorbs the deformation of the buttocks and makes it easier to continue to apply the first region R1 and the second region R2 to the wearer. Further, the first region R1 and the second region R2 are divided by the intermediate region R3, and the propagation of force from the first region R1 to the second region R2 is suppressed. Thereby, the front side can be arranged to face the wearer's excretion opening with respect to the middle region R3, and the rear side can be arranged to face the wearer's buttocks with respect to the middle region R3. Therefore, the gap between the absorbent article and the body can be reduced, and rear leakage can be suppressed.

  The distance L1 between the center 41WC in the width direction W of the first curved portion 41 and the center 3LC in the front-rear direction L of the wing 3 is not less than 25 mm and not more than 80 mm. As a result of various investigations by the present applicant, the deformation start point on the crotch side in the buttocks is often located more than 25 mm behind the center of the wing 3 in the front-rear direction L. Therefore, when the distance L1 between the center 41WC in the width direction W of the first curved portion 41 and the center 3LC in the front-rear direction L of the wing 3 is 25 mm or more, the first curved portion 41 and the intermediate portion are used as the deformation starting point on the crotch side of the buttocks. Region R3 is located. When the distance L1 between the center 41WC in the width direction W of the first curved portion 41 and the center 3LC in the front-rear direction L of the wing 3 exceeds 80 mm, the buttocks swell the most and the body pressure of the buttocks is most affected by the first pressure. The curved portion 41 and the intermediate region are located, and there is a possibility that an uncomfortable feeling may occur.

  The first music part 41 and the second music part 42 are curved in a convex shape toward the rear in plan 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 41, the second music part 42, and the intermediate region R3 are separated from the body, the first music part 41, the second music part 42, and the intermediate region R3 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.

  The adhesive region 60 does not overlap the first curved portion 41, the second curved portion 42, and the intermediate region R3 in the thickness direction T. The part stopped by the underwear of the absorbent article 1 (the part provided with the adhesive region) is easily deformed following the underwear. For example, when the body is crushed while lying on its back when the first music part 41, the second music part 42, and the intermediate region R3 are attached to the underwear via the adhesive region, the absorbent article follows the underwear. Is deformed. The absorbent article may follow the underwear and become unintended deformation, and a gap may be formed between the wearer and the absorbent article. However, since the 1st music part 41, the 2nd music part 42, and middle field R3 are not stopped by underwear, they can change freely. Therefore, even when the first region R1 and the second region R2 are deformed together with the underwear, the force transmitted from the underwear is divided by the intermediate region R3, and the deformation of the wearer's body can be absorbed by the intermediate region R3.

  The middle-high portion 33 is adjacent to the first curved portion 41 in the first region R1. The thickness of the middle / high portion 33 is thicker than the thickness of the region other than the middle / high portion of the absorber 30. When the middle high portion 33 and the first curved portion 41 of the first region R1 are adjacent to each other, the difference in rigidity and thickness between the first region R1 and the intermediate region R3 is increased, and a clearer deformation starting point is formed. Therefore, the intermediate region R3 and the first region R1 can be arranged along the body in different shapes.

  The angle α formed by the rear surface 33RS of the middle-high portion 33 and the non-skin facing surface of the middle-high portion 33 is larger than the angle β formed by the front surface 33FS of the middle-high portion 33 and the non-skin facing surface of the middle-high portion 33. When the angle between the side surface of the absorber and the non-skin facing surface of the absorber is large, the absorber is non-skin facing surface than when the angle between the side surface of the absorber and the non-skin facing surface of the absorber is small Easy to bend from the starting point. For example, when the angle of the front surface of the middle-high portion 33 is large, a folding start point is formed on the front surface of the middle-high portion 33, and the fit of the front surface of the middle-high portion 33 may be reduced. However, since the angle formed by the front surface of the mid-high portion 33 and the non-skin facing surface is relatively small, the front surface of the mid-high portion 33 is not easily broken, and the fit of the front surface of the mid-high portion 33 can be maintained. On the other hand, since the angle formed between the rear surface of the mid-high portion 33 and the non-skin facing surface is relatively large, a folding start point is easily formed on the rear surface of the mid-high portion 33.

  The elastic member 91 is disposed across the first music part 41 and the second music part 42 in the front-rear direction L. Therefore, the first region R1 on the front side of the first curved portion 41 and the second region R2 on the rear side of the second curved portion 42 can be brought close by the contraction of the elastic member 91. Therefore, even if a wrinkle occurs in the intermediate region R3 due to the deformation of the first music part 41 or the like, the wrinkle can be brought close.

  The outer edge 41 </ b> E of the first music part 41 and the outer edge 42 </ b> E of the second music part 42 are located on the outer edge of the absorbent core 31. Therefore, the entire width direction of the absorbent core 31 is easily deformed starting from the first curved portion 41 and the second curved portion 42. Moreover, since 1st area | region R1 and 2nd area | region R2 are parted in the front-back direction L, it can suppress that one deformation | transformation state propagates to the other.

(4) Absorbent article according to modified example Next, an absorbent article 1A according to the modified example will be described. In the description of the absorbent article 1A according to the modified example, 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.

  1 A of absorbent articles which concern on a modification have the pressing part 80 which compressed at least 30 to the thickness direction. As for the pressing part 80 of this Embodiment, the surface sheet 11 and the absorber 30 are compressed in the thickness direction. The pressing part 80 has the 1st pressing part 81 arrange | positioned at 1st area | region R1, and the 2nd pressing part 82 arrange | positioned at 2nd area | region R2.

  The first pressing part 81 has a pair of first front and rear pressing parts 81L extending in the front-rear direction, and a first width pressing part 81W that is positioned in front of the first front and rear pressing parts 81L and extends in the width direction. 81 L of 1st front-back pressing parts are located in the outer side of the width direction rather than the center of the width direction of 1st area | region R1.

  In addition, 81 L of 1st front-back pressing parts may be formed so that it may incline with respect to the straight line along the front-back direction L, and is formed of the straight line along the front-back direction L, and the 1st front-back pressing part 81L. The angle (acute angle side) is 45 degrees or less. On the other hand, the first width pressing part 81W may be formed so as to be inclined with respect to a straight line along the width direction W, and an angle formed by the straight line along the width direction W and the first width pressing part 81W. (Acute angle side) is less than 45 degrees.

  The middle / high portion 33 is surrounded by the first width pressing portion 81 </ b> W, the pair of first front and rear pressing portions 81 </ b> L, and the first music portion 41. The pair of first front-rear pressing parts 81 </ b> L are arranged along the outer edge of the middle-high part 33. Since the pressing part 80 surrounds the middle-high part 33, it becomes easy to maintain the swelling of the middle-high part 33, and the middle-high part 33 fits with a wearer's excretion opening | mouth.

  The first music part 41 and the second music part 42 have a linear shape along the width direction. Moreover, the outer edge 41E of the 1st music part 41 and the outer edge 42E of the 2nd music part 42 are located in the outer side of the width direction rather than the 1st front-back pressing part 81L. In the configuration in which the position in the width direction of the first front / rear pressing part 81L changes as in the modification shown in FIG. 5, at least the rear end edge of the first front / rear pressing part 81L (the first curved part 41 and The portion closest to the second music portion 42 suffices to be located on the outer side in the width direction with respect to the first front / rear pressing portion 81 </ b> L.

In order to maintain a structure that fits the body, it is preferable that the first region R1 in front of the first music part 41 and the second region R2 in the rear of the second music part 42 are surely divided. . In a state in which the absorbent article 1 is worn, the first region R1 and the first music part 41 are sandwiched between the legs of the wearer, enter into the width, and rise to the skin facing surface side. Therefore, it fits the body. On the other hand, the 2nd music part 42 and 2nd field R2 maintain a flat shape, and make good fit nature and the good feeling of attachment. Therefore, if the width of the outer edge of the first curved portion 41 is narrower than that of the first front / rear compressed portion, the wrinkles are generated near the deformation starting point (mainly the first curved portion 41) in conjunction with the front side movement of the first region and the like. As a result, it becomes difficult to obtain the effect of dividing the first region and the second region. However, since the outer edge 41 </ b> E of the first music part 41 and the outer edge 42 </ b> E of the second music part 42 are located on the outer side in the width direction with respect to the pressing part 80, The deformation starting point by the first music part 41 and the second music part 42 can be formed in the area to reach. Therefore, the entire region in the width direction of the middle and high portions can be easily deformed, and the effect of dividing the first region and the second region can be obtained.

  Moreover, the absorption core 31 is arrange | positioned in the width direction outer side of the 1st music part 41, the outer side of the width direction of intermediate region R3, and the width direction outer side of the 2nd music part 42. Therefore, the absorbent core according to the modification is not divided in the front-rear direction by the first music part 41 and the second music part 42. For example, when the absorbent core is divided in the front-rear direction by the first music part 41 and the second music part 42, the first music part 41 and the second music part 42 are deformed from the starting point in the state before mounting, and unintended wrinkles occur. May occur.

  However, since the absorbent core is not divided in the front-rear direction by the first music part 41 and the second music part 42, the first music part 41 and the second music part 42 are prevented from being deformed from the starting point in the state before being mounted, Unintentional wrinkles can be prevented.

(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 intermediate region will be described. Table 1 shows a comparative evaluation result of the length of the intermediate region. 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. The absorbent articles of Examples 1 to 4 and the absorbent articles of Comparative Examples 1 to 3 have different lengths in the front-rear direction of the intermediate region R3, but the other configurations are the same.

  A comparative evaluation test was conducted by 20 women using napkins. In the evaluation test, the practitioner was asked to visually recognize and use the target sample and asked the following questions.

  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 there a less anxiety about the absorbency than 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.

The absorbent article which concerns on Examples 1-4 is 10-50 mm in the length of the front-back direction of an intermediate | middle area | region, and the result of being favorable about both maintenance evaluation of fit property and evaluation of anxiety with respect to absorptivity. I was able to get it. From the result, it was found that the length of the intermediate region in the front-rear direction is preferably 10 mm or more and 50 mm or less. More specifically, it has been found that when the length of the intermediate region in the front-rear direction is 10 mm or more, good results are obtained with respect to fit. In addition, it was found that when the length of the intermediate region is 50 mm or less, anxiety about absorbability can be suppressed.

  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 collapsed 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, when the length of the middle region in the front-rear direction is 10 mm or more, it is possible to cover the bulge from the crotch-side end of the crushed portion of the wearer's buttocks to the protruding leg-side end of the buttocks. I understood.

1: Absorbent article 2: Body part 2E: Outer edge 3: Wing 3LC: Center of wing front and rear direction 4: Hip flap 10: Skin sheet 11: Surface sheet 12: Side sheet 20: Non-skin sheet 30: Absorption Body 33: Middle-high part 41: 1st music part 42: 2nd music part 60: adhesion area 61: 1st main body adhesion area 62: 2nd main body adhesion area 63: wing adhesion area 64: hip flap adhesion area 80: pressing part 81: 1st pressing part 82: 2nd pressing part 91: Elastic member R1: 1st area | region R2: 2nd area | region R3: Intermediate area L: Front-back direction T: Thickness direction T1: Skin facing surface side T2: Non-skin facing Surface side W: width direction

Claims (12)

Having a front-rear direction and a width direction orthogonal to each other;
A main body comprising an absorbent body having an absorbent core laminated with an absorbent material, a skin sheet positioned on the skin facing surface side of the absorber, and a non-skin surface sheet positioned on the non-skin facing surface side of the absorber. And
The absorbent article has a wing that extends outward in the width direction from the outer edge of the main body and can be folded back to the non-skin sheet when in use.
A first curved portion extending in the width direction on the rear side of the front-rear direction center of the wing and on the front side of the rear end edge of the absorbent core; and a rear side of the first curved portion; and A second curved portion extending in the width direction is provided,
The first curved portion and the second curved portion are defined by a boundary where rigidity changes, and the absorbent article can be bent 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. An intermediate region located between the portion and the second music portion,
The weight of the absorbent material in the intermediate region is lower than the weight of the absorbent material in the first region and lower than the weight of the absorbent material in the second region;
Wherein the longitudinal length of the intermediate region, rather long than the thickness of the absorber of the portion adjacent to the first track portion of the first region,
The outer edge of the said 1st music part and the outer edge of the said 2nd music part are absorbent articles located in the outer edge of the said absorption core .   The absorbent article according to claim 1, wherein a length of the intermediate region in the front-rear direction is 10 mm or more.   The absorbent article according to claim 2, wherein the length of the intermediate region in the front-rear direction is 50 mm or less.   The absorbent article according to any one of claims 1 to 3, 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 wing is 25 mm or more and 80 mm or less.   The absorptive article according to any one of claims 1 to 4 in which said 1st music part and said 2nd music part curve convexly toward back in plane view. The non-skin surface sheet of the main body is provided with an adhesive region having an adhesive for stopping the absorbent article in underwear,
The absorptive article according to any one of claims 1 to 5 in which said 1st music part, said 2nd music part, and said middle field do not overlap said adhesion field in the thickness direction. The absorber has a mid-high portion positioned on the inner side in the width direction than the outer edge of the absorber,
The thickness of the middle high portion is thicker than the thickness of the outer edge of the absorber in the first region,
The absorptive article according to any one of claims 1 to 6 in which said middle high part is adjacent to said 1st music part in said 1st field.   In the cross section in the front-rear direction of the absorbent article, the angle formed by the rear surface of the middle-high portion extending in the thickness direction from the rear edge of the middle-high portion and the non-skin facing surface of the middle-high portion is the height of the middle-high portion. The absorptive article according to claim 7 larger than an angle which a front surface of said middle high part extended in said thickness direction from a front end edge and a non-skin opposing surface of said middle high part make. It has a squeezed part compressed in the thickness direction of the absorber,
The absorptive article according to claim 7 or 8 with which said pressing part is arranged along the outside edge of said middle and high part.   The absorptive article according to claim 9 in which the outside edge of said 1st music part and the outside edge of said 2nd music part are located in the outside of said width direction rather than said pressing part. Comprising a stretchable member that stretches in the front-rear direction;
The said elastic member is an absorbent article in any one of Claims 1-10 arrange | positioned ranging over the said 1st music part and the said 2nd music part in the said front-back direction. Having a front-rear direction and a width direction orthogonal to each other;
A main body comprising an absorbent body having an absorbent core laminated with an absorbent material, a skin sheet positioned on the skin facing surface side of the absorber, and a non-skin surface sheet positioned on the non-skin facing surface side of the absorber. And
The absorbent article has a wing that extends outward in the width direction from the outer edge of the main body and can be folded back to the non-skin sheet when in use.
A first curved portion extending in the width direction on the rear side of the front-rear direction center of the wing and on the front side of the rear end edge of the absorbent core; and a rear side of the first curved portion; and A second curved portion extending in the width direction is provided,
The first curved portion and the second curved portion are defined by a boundary where rigidity changes, and the absorbent article can be bent 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. An intermediate region located between the portion and the second music portion,
The weight of the absorbent material in the intermediate region is lower than the weight of the absorbent material in the first region and lower than the weight of the absorbent material in the second region;
Wherein the longitudinal length of the intermediate region state, and are more and 50mm or less 10 mm,
The outer edge of the said 1st music part and the outer edge of the said 2nd music part are absorbent articles located in the outer edge of the said absorption core .

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