Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
  • A61F13/47—Sanitary towels, incontinence pads or napkins
  • A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
  • A61F13/47—Sanitary towels, incontinence pads or napkins
  • A61F13/476—Sanitary towels, incontinence pads or napkins characterised by encircling the crotch region of the undergarment, e.g. with flaps
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
  • A61F13/00—Bandages or dressings; Absorbent pads
  • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
  • A61F13/56—Supporting or fastening means

Definitions

• the present invention relates to absorbent articles such as sanitary napkins.
• the back of a sanitary napkin has a stopper (also called an adhesive part) to secure the sanitary napkin to underwear.
• Patent Documents 1 to 3 describe absorbent articles having a main body, wings, and hip guards, with adhesive sections extending in the longitudinal direction of the absorbent article arranged at intervals along the longitudinal direction on the back side of the main body.
• Patent Document 1 describes that multiple adhesive sections covered with a rear release material are arranged along the longitudinal direction of the article and spaced apart in the width direction, and that the front end of the adhesive section arranged on the widthwise center side is positioned forward of the front end of the adhesive section arranged on the widthwise outer side so that the rear release material can be smoothly peeled off from the front side of the absorbent article.
• Patent Document 2 describes that a low basis weight section is provided between two adjacent adhesive sections spaced apart in the longitudinal direction, thereby preventing the adhesive sections from separating from the underwear.
• Patent Document 3 describes that a low basis weight section is provided to reduce rigidity so as not to cause discomfort to the wearer when lying down, and that a low basis weight section is arranged between two adjacent adhesive sections spaced apart in the longitudinal direction.
• JP 2014-171559 A Japanese Patent Application Laid-Open No. 2017-176449 International Publication No. 2016/103774
• An absorbent article includes a main body, a pair of wings, and a pair of hip guards.
• the main body extends along a longitudinal direction corresponding to the front-to-back direction of the wearer, and is divided into a front region, a middle region, and a rear region.
• the main body has a top sheet, a back sheet, and an absorbent body disposed between the top sheet and the back sheet.
• the pair of wings extend outward from the intermediate region in the lateral direction corresponding to the left-right direction of the wearer.
• the pair of hip guards extend laterally outward from the rear region.
• the absorbent article includes a front adhesive portion, a rear adhesive portion, wing adhesive portions, and a hip guard adhesive portion.
• the front adhesive portion is disposed on the underwear contact surface of the main body and extends continuously in the vertical direction.
• the rear adhesive portion is disposed on the underwear contact surface of the main body, and is located behind the front adhesive portion with a spaced portion in between where no adhesive portion is disposed.
• the wing adhesive portion is disposed on the underwear contacting surface of the wing.
• the hip guard adhesive portion is disposed on the underwear contact surface of the hip guard.
• the absorbent article has constricted portions between the wings and the hip guards, where both longitudinal side edges are constricted inward in the horizontal direction. When an imaginary line parallel to the lateral direction is drawn passing through the front end of the hip guard adhesive portion, the front end of the rear adhesive portion is located on the imaginary line or rearward of the imaginary line.
• plan view refers to a plan view seen from the thickness direction Z.
• inner side in the transverse direction Y means closer to the transverse direction Y toward the longitudinal center line CL that bisects the transverse direction Y of the napkin 1
• outer side in the transverse direction Y means farther away from the longitudinal center line CL in the transverse direction Y.
• Inner in the longitudinal direction X means approaching the longitudinal direction X toward the horizontal centerline that bisects the longitudinal direction X of the napkin 1
• outward in the longitudinal direction X means moving away in the longitudinal direction X toward the horizontal centerline that bisects the longitudinal direction X of the napkin 1.
• front end refers to the forward-most portion in the longitudinal direction X, i.e., the front end
• rear end refers to the rear-most portion in the longitudinal direction X, i.e., the rear end.
• the napkin 1 may be used while sleeping, and may have a length of 290 mm or more along the longitudinal direction X.
• the maximum length (total length) of the napkin 1 in the longitudinal direction X is 300 mm, and the maximum length (total width) in the horizontal direction is 160 mm.
• the absorbent article 1 comprises a main body M, a pair of wings W, and a pair of hip guards H.
• the main body M extends in a strip shape along the longitudinal direction X, and is fixed to the inner surface of the wearer's underwear when worn.
• the main body M is divided along the longitudinal direction X into a front region M1, a middle region M2, and a rear region M3.
• the intermediate region M2 includes an excretory region-facing region that faces the wearer's excretory region when worn.
• the excretory region-facing region is located at the center of the intermediate region M2 in the lateral direction Y.
• the absorbent article is a napkin 1
• the excretory region is the vaginal opening.
• the intermediate region M2 is the region where the wings W are provided.
• the napkin 1 has constricted portions 11 between the wings W and the hip guards H, where the left and right side edges 1S along the longitudinal direction X are constricted inward in the lateral direction Y.
• the front end of the hip guards H coincides with the rear end of the wings W.
• the portion of the napkin 1 that overlaps with the rear region M3 in the vertical direction X is referred to as the rear portion 80.
• the rear portion 80 includes the rear region M3 of the main body M and a pair of hip guards H.
• the rear portion 80 has a first region 21 and a second region 22.
• the first region 21 is a region in which the length (width) of the napkin 1 in the horizontal direction Y gradually increases from the front to the rear.
• the width of the napkin 1 gradually increases from the front end 81 of the rear portion 80 (corresponding to the boundary between the middle region M2 and the rear region M3) toward the rear.
• the top sheet 2 is made of a highly liquid-permeable sheet material so that it can efficiently absorb menstrual blood and other liquids from the top surface.
• the back sheet 3 and side sheets 5 are made of a less liquid-permeable sheet material so that liquids absorbed from the top sheet 2 do not easily leak out.
• the top sheet 2, back sheet 3, and side sheets 5 can be made of materials similar to those conventionally used in the relevant technical field, without any particular restrictions.
• the top sheet 2 can be made of a liquid-permeable nonwoven fabric or a perforated film.
• the back sheet 3 is provided with adhesive portions 31-34 that secure the main body M, wings W, and hip guards H to the underwear.
• the non-skin side of the napkin 1 on which the adhesive portions 31-34 are provided is referred to as the underwear-contacting surface 3a.
• the wings W are formed by laminating the side sheets 5 and the back sheet 3 in the thickness direction Z, and the underwear-contacting surface of the wings W corresponds to the non-skin side of the back sheet 3.
• the hip guard H is formed by laminating the side sheets 5 and the back sheet 3 in the thickness direction Z, and the underwear-contacting surface of the hip guard H corresponds to the non-skin side of the back sheet 3.
• the underwear-contacting surface of the main body M corresponds to the non-skin side of the back sheet 3.
• the adhesive portions 31-34 will be described later.
• the rear adhesive portions 32 are provided in a pair, one on each side of the vertical center line CL. On the underwear contact surface 3a, the pair of rear adhesive portions 32 are arranged rearward in the longitudinal direction X from the pair of front adhesive portions 31, with a separation portion 35 interposed therebetween.
• the separation portion 35 is a portion where no adhesive portion exists between the pair of front adhesive portions 31 and the pair of rear adhesive portions 32.
• the front adhesive portions 31 and the rear adhesive portions 32 are separated in the longitudinal direction X.
• Both the front adhesive portion 31 and the rear adhesive portion 32 have a rectangular shape that is long in the longitudinal direction X.
• the three vertical adhesive portions 340 are arranged so that their front ends are gradually shifted rearward toward the inside in the horizontal direction Y.
• the overall shape of the hip guard adhesive portion 34 can be considered to be a roughly trapezoid.
• the three vertical adhesive portions 340 are arranged so that their rear ends are gradually shifted rearward toward the inside in the horizontal direction Y, so the overall shape of the hip guard adhesive portion 34 can be considered to be a roughly parallelogram.
• the front edge 341 (the edge corresponding to the side located on the front side of the trapezoid or parallelogram) is inclined with respect to the horizontal direction Y. In detail, the front edge 341 is inclined diagonally rearward toward the inside of the horizontal direction Y of the napkin 1.
• the hip guard adhesive portion 34 When the pair of hip guard adhesive portions 34 has a third region between the first region 21 and the second region 22 whose width does not change along the longitudinal direction X, the hip guard adhesive portion 34 is typically positioned so that the center of the third region in the longitudinal direction X coincides with approximately the center of the hip guard adhesive portion 34 in the longitudinal direction X.
• approximately the center here refers to the point (center) that divides the length of the relevant area (hip guard adhesive portion 34, third region) in the vertical direction X in half, but it may also be offset forward or backward in the vertical direction X from the center as long as the above-mentioned effects are achieved, in which case the offset should preferably be 5 mm or less.
• an adhesive-free region 36 is provided in the first region 21, where no adhesive portion is present across the entire width in the horizontal direction Y.
• adhesive-present regions where adhesive portions are present are located in front of and behind the adhesive-free region 36.
• the length of the adhesive-free region 36 in the vertical direction X is shorter than that of the separation portion 35, and the adhesive-free region 36 includes a portion of the separation portion 35.
• the adhesive-free region 36 is located in front of the hip guard adhesive portion 34.
• a cross-shaped adhesive-free region is present in the region surrounding the outer edges of the pair of front adhesive portions 31 and the pair of rear adhesive portions 32 (the region surrounded by connecting the outer vertices of the rectangular adhesive portions 31 and 32 in the horizontal direction Y and in the vertical direction X).
• the gap 35 roughly corresponds to the horizontal line of the cross in the cross-shaped adhesive-free area.
• a separation portion 35 where no adhesive portion exists is provided in the first region 21, which is susceptible to a large twisting force 65 acting diagonally backward from the above-mentioned middle region M2, and an adhesive-free region 36 where no adhesive portion exists across the entire width in the lateral direction Y.
• the adhesive-free regions of the napkin 1 are not fixed to the underwear.
• the wing adhesive parts 33 or hip guard adhesive parts 34 can be peeled off due to vigorous movements by the wearer, preventing the napkin 1 from unintentionally deforming, causing the edges of the napkin 1 to come into contact with the groin or buttocks and causing discomfort when wearing the napkin, and also preventing leakage due to undesirable deformation of the napkin 1.
• an imaginary line 67 is drawn parallel to the horizontal direction Y and passing through the front end 34a of the hip guard adhesive portion 34.
• the rear adhesive portion 32 is positioned so that its front end 32a is located on the imaginary line 67 or behind the imaginary line 67.
• the front end 32a of the rear adhesive portion 32 is located behind the imaginary line 67.
• the areas with adhesive portions have higher rigidity than the areas without adhesive portions, and the boundary between the areas with and without adhesive portions is prone to bending due to the difference in rigidity.
• the front end 32a of the rear adhesive portion 32 is positioned rearward of the imaginary line 67, and as shown in Figure 6(A), the difference in rigidity causes the napkin 1 to easily deform along a curve 66 that is convex rearward in a plan view near the boundary between the adhesive-free region 36 and the region behind it when worn, as shown in Figure 6(A).
• the presence of the adhesive-free region 36 in front of the hip guard adhesive portion 34 means that the area of the napkin 1 corresponding to the adhesive-free region 36 is less likely to deform in response to deformations in the underwear when the wearer moves, making the hip guard adhesive portion 34 less likely to peel off. Therefore, the napkin 1 can effectively maintain a state in which a gap is less likely to form between the hip guard H and the buttocks, which is achieved by positioning the front end 32a of the rear adhesive portion 32 rearward of the imaginary line 67.
• the napkin 1 is comfortable to wear and is unlikely to cause the wearer discomfort due to peeling of the wing adhesive portions 33 and hip guard adhesive portions 34, or discomfort due to leakage.
• the rear edge 1a which is the rear edge of the napkin 1 deforms along a curve 66 that convex toward the rear in a planar view as shown in Figure 6 (A) below due to the difference in rigidity between the area with the adhesive portion and the area without the adhesive portion, making it easier for the napkin 1 to conform to the curved surface of the buttocks, thereby preventing the rear edge 1a of the napkin 1 from rolling up.
• the front adhesive portion 31 may be located at the constricted portion 11 .
• the presence of the adhesive portion increases the rigidity of the napkin 1 near the constricted portion 11, making the absorbent body 4 near the constricted portion 11 less likely to deform, and ensuring a good amount of liquid that can be absorbed.
• the front adhesive portion 31 may be arranged to extend continuously from the front region M1 to the middle region M2 and then to the rear region M3, and the position of the separation portion 35 in the vertical direction X may be arranged to be closer to the hip guard adhesive portion 34 than to the wing adhesive portion 33, as shown in FIG. 2 .
• napkins with a relatively long overall length (over 290 mm) like the napkin 1 of this embodiment are generally suitable for use when sleeping, when it is easy to lie on your back.
• the area near the separation portion 35 is in a position where the wearer's body pressure is likely to be applied.
• the adhesive portion is less likely to remain on the underwear when the napkin is removed from the underwear, making the napkin easier to handle.
• a tab tape T is releasably adhered to the outer surface of the exterior sheet 13, thereby maintaining the shape of the package.
• the napkin 1 is folded in three, and has folded portions L1 and L2 extending along the transverse direction Y formed by the folding.
• the laminate may include additional components other than the exterior sheet and napkin, if necessary.
• the laminate may include a release sheet for covering the wing adhesive portion 33 and the hip guard adhesive portion 34 on the napkin.
• the absorbent body 4 has a front high basis weight region 72 and a rear high basis weight region 71.
• the folded portions L1 and L2 do not overlap the high basis weight region.
• the high basis weight region will be described later.
• the hip guard adhesive portion 34 has a front edge 341 that is generally inclined obliquely backward and inward in the lateral direction Y.
• the hip guard adhesive portion 34 is configured as a collection of three vertical adhesive portions 340, and the positions of the front ends of the three vertical adhesive portions 340 are sequentially shifted rearward toward the inside in the lateral direction Y, but this is not limiting.
• the front ends of the three vertical adhesive portions 340 that make up the hip guard adhesive portion 34A may all be positioned in the same position in the vertical direction X, and the front edge of the hip guard adhesive portion 34A may be generally parallel to the horizontal direction Y.
• the front end 32a of the rear adhesive portion 32 is located rearward of the imaginary straight line 67 that passes through the front end 34Aa of the hip guard adhesive portion 34A.
• the positions of the front ends of the three vertical adhesive portions 340 constituting the hip guard adhesive portion 34B may be configured to be shifted forward in order toward the inside in the lateral direction Y, so that the front and rear end edges of the hip guard adhesive portion 34B as a whole are configured to be inclined diagonally forward toward the inside in the lateral direction Y.
• the vertical adhesive portion 340 located furthest outward in the horizontal direction Y is positioned towards the rear of the napkin 1 overall, thereby preventing the rear edge 1a of the napkin 1 from rolling up near both sides in the horizontal direction Y (near the rear corners of the napkin 1).
• the front end 32a of the rear adhesive portion 32 is located rearward of an imaginary line 67 passing through the front end 34Ba of the hip guard adhesive portion 34B.
• the round compression groove 6 has a pair of left and right vertical compression grooves 61 extending in the vertical direction X, and a front horizontal compression groove 62 and a rear horizontal compression groove 63 extending in the horizontal direction Y.
• the pair of vertical compression grooves 61 are provided over substantially the entire length of the main body M, from the front region M1 of the main body M, through the middle region M2, to the rear region M3.
• the front horizontal compression groove 62 connects the front ends of each of the pair of vertical compression grooves 61
• the rear horizontal compression groove 63 connects the rear ends of each of the pair of vertical compression grooves 61.
• the first horizontal compressed groove 12 extends in the horizontal direction Y in the rear region M3.
• the first horizontal compressed groove 12 is located rearward of the front high basis weight region 72 provided in the absorbent core 7, and has an arc shape that convex rearward in plan view, roughly following the shape of the rear edge of the front high basis weight region 72.
• the first horizontal compressed groove 12 is shaped to connect with the center of each of the pair of vertical compressed grooves 61 in the vertical direction X.
• the compression grooves provided in the separation portion 35 of the main body M may be a pair of left and right vertical compression grooves 61 extending in the vertical direction, as shown in Figure 2.
• the vertical compression grooves 61 extend over the entire length of the separation portion 35 in the vertical direction X, substantially overlap in plan view with the vertical groove portions 10x provided in the absorbent core 7 described below, and are located on both left and right edges of the separation portion 35.
• the absorbent core 7 has a gap 75 in the low rigidity region where only the low basis weight region 73 and the groove 10 are present, between the region where the rear high basis weight region 71 is located and the region where the front high basis weight region 72 is located in the longitudinal direction X.
• the front high basis weight region 72 is positioned opposite the excretory area (vaginal opening), and the rear high basis weight region 71 is positioned opposite the intergluteal cleft, and the gap 75 in the low rigidity region allows the napkin 1 to easily deform along the shape of the body to wrap around the buttocks in the longitudinal direction.
• the absorbent core 7 has multiple vertical grooves 10x, multiple horizontal grooves 10y, multiple front high basis weight blocks 72a, multiple rear high basis weight blocks 71a, and multiple low basis weight blocks 73a, each defined by a front circumferential groove 10a and a rear circumferential groove 10b.
• the vertical grooves 10x, the horizontal grooves 10y, the front circumferential grooves 10a, and the rear circumferential grooves 10b they are referred to as grooves 10.
• the grooves 10 are formed, for example, as recesses extending downward from the upper surface of the absorbent core 7 in the thickness direction Z.
• the rear high basis weight region 71 is formed by a plurality of (two in this embodiment) rear high basis weight blocks 71a, and its outer shape in plan view is formed by the rear circumferential groove portion 10b.
• the front high basis weight region 72 is formed by a plurality of (14 in this embodiment) front high basis weight blocks 72a, and its outline in plan view is formed by the front circumferential groove portion 10a.
• the low basis weight region 73 is formed by a plurality of (54 in this embodiment) low basis weight blocks 73a.
• the rear high basis weight block 71a and the front high basis weight block 72a are regions in which the constituent fibers of the absorbent body 4 have a higher basis weight and higher rigidity than the low basis weight block 73a.
• the high-rigidity front high basis weight region 72 is provided facing the excretory area, making the middle region M2 of the main body M less likely to deform unintentionally, and maintaining good liquid absorption of liquid from the excretory area.
• the rear high basis weight region 71 facing the intergluteal cleft, the rear region M3 of the main body M is less likely to deform unintentionally, and maintaining good liquid absorption of liquid flowing toward the rear of the napkin 1.
• the amount of liquid that can be absorbed can be increased.
• the rear high basis weight block 71a and the front high basis weight block 72a are typically thicker than the low basis weight block 73a and protrude upward. This allows the front high basis weight region 72 and the rear high basis weight region 71 to improve the fit of the napkin 1 in the excretory area and the buttocks cleft, effectively preventing leakage.
• the rear high basis weight blocks 71a and front high basis weight blocks 72a which have relatively high basis weights, are indicated by dense dots
• the low basis weight blocks 73a are indicated by sparse dots
• the area corresponding to the separation portion 35 has low rigidity due to the absence of an adhesive portion, but rigidity can be increased by providing a rear high basis weight area 71.
• the napkin 1 is provided with a configuration in the separation area 35 of the absorbent body 4 that provides high-rigidity areas to the absorbent body 4, such as the rear high-basis-weight area 71 and the vertical compressed grooves 61.
• This configuration makes it less likely for undesirable deformation to occur in the area of the napkin 1 corresponding to the separation area 35, and reduces the impact of this undesirable deformation on the wing adhesive areas 33 and hip guard adhesive areas 34, further preventing peeling of the wing adhesive areas 33 and hip guard adhesive areas 34.
• each adhesive portion can be set as appropriate depending on the overall length of the napkin 1, but the numerical ranges described below are preferred for napkins with an overall length of 290 mm to 450 mm.
• the maximum width of the pair of wings W and the maximum width of the pair of hip guards H are the same, and these correspond to the width of the napkin 1.
• the length in the vertical direction X will be referred to as the "vertical width”
• the length in the horizontal direction Y will be referred to as the "horizontal width.”
• each of the vertical adhesive portions 340 constituting the hip guard adhesive portion 34 is offset in the vertical direction X as shown in Figure 2, the vertical width of the entire hip guard adhesive portion 34, i.e., the vertical length from the front end of the forward-most vertical adhesive portion 340 to the rear end of the rearmost vertical adhesive portion 340, is preferably 17 mm to 50 mm, from the perspective of preventing sagging of the hip guard when the absorbent article is worn for long periods of time.
• the napkin 1H comprises a main body M, a pair of wings W, a pair of hip guards H, and a pair of three-dimensional gathers G.
• the hip guard adhesive portion 34H is shaped like a single rectangle.
• the three-dimensional gathers G are provided on the sides of the main body M in the horizontal direction Y, and are arranged in pairs on the left and right so as to extend in the vertical direction X.
• the three-dimensional gathers G stand up in the thickness direction Z while being worn, and have the function of preventing leakage of liquid in the horizontal direction Y. Note that "standing up in the thickness direction” means standing up towards the wearer.
• the three-dimensional gathers G are arranged along the entire longitudinal length of the main body M.
• the three-dimensional gathers G are configured so that at least a portion of them can stand up when contracted in the vertical direction X.
• the three-dimensional gathers G are formed by folding the inner side in the horizontal direction Y of the side sheets 5 arranged on the sides of the main body M in the horizontal direction Y back to the outer side in the horizontal direction Y.
• the sheet material forming the three-dimensional gathers G is not limited to the side sheets 5, and may be a sheet material separate from the side sheets 5.
• the three-dimensional gather G has a standing region G1, a front fixing region G2, and a rear fixing region G3.
• the standing region G1 is configured to be able to stand in the thickness direction of the main body M.
• the standing region G1 is a portion of the folded-back portion of the side sheet 5 that is not joined to the main body M.
• the standing region G1 is disposed across the middle region M2 and extends to a portion of the front region M1 and the rear region M3.
• the front fixing region G2 and the rear fixing region G3 are non-standing portions.
• the three-dimensional gathers G are formed by arranging elastic members 14 stretchable in the vertical direction X on a sheet member.
• the elastic members 14 are, for example, thread-like or strip-like elastic members, and multiple members are provided in the napkin 1H.
• the elastic members 14 are arranged throughout the three-dimensional gathers G in the standing region G1, front fastening region G2, and back fastening region G3, but they need only be arranged in at least the standing region G1.
• the elastic members 14 are attached in a stretched state in the vertical direction X to the side sheet 5, which is stretched in the XY plane.
• the rear end G1a and front end G1b of the standing region G1 are parts where the stretching force of the gathers is particularly strong.
• the front adhesive portion 31 and the rear adhesive portion 32 are located in the area sandwiched between a pair of three-dimensional gathers G in a planar view, and the rear end G1a and front end G1b of the standing region G1 do not overlap the adhesive portion in a planar view.
• the area of napkin 1H corresponding to the three-dimensional gathers G is not fixed to the underwear when worn, and the standing region G1 is more likely to stand up from the main body M toward the skin.
• the rear end G1a which is the part of the three-dimensional gathers G where the contractile force is particularly strong, so that it does not overlap the adhesive part in a plan view, and to provide a separation part 35 in the rear part 80, so that the rear end G1a of the standing region G1 is located within the area that overlaps with the separation part 35 of the main body M in the vertical direction X, or is located further inward in the vertical direction X than this area.
• the rear end G1a is located within the area that overlaps with the separation part 35 of the main body M in the vertical direction X.
• the area of the napkin 1H corresponding to the separation portion 35 is not fixed to the underwear, making it easier for the contractile force of the three-dimensional gathers G to pull the absorbent body 4 closer, improving the ability of the standing region G1 to stand up.
• part of the standing region G1 overlaps with the wearer's buttocks.
• the napkin 1H can maintain a stable standing state of the standing region G1, and the three-dimensional gathers G can easily fill in any gaps that occur between the napkin and the wearer's body, improving the effectiveness of preventing leakage.
• the absorbent articles to which this invention can be applied are not limited to sanitary napkins.
• the present invention can be applied to pad-type absorbent articles similar to sanitary napkins, such as urine absorption pads and panty liners.
• the absorbent article of the present invention provides a comfortable fit even when worn for long periods of time.

Landscapes

• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• Engineering & Computer Science (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Vascular Medicine (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Absorbent Articles And Supports Therefor (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=96773796

Family Applications (1)

Country Status (2)

Citations (4)

• 2024
  • 2024-02-16 JP JP2024021749A patent/JP2025125665A/ja active Pending
• 2025
  • 2025-02-14 WO PCT/JP2025/004910 patent/WO2025173762A1/ja active Pending

Patent Citations (4)

Also Published As

Similar Documents

Legal Events