WO2013161716A1 - Absorbent article - Google Patents
Absorbent article Download PDFInfo
- Publication number
- WO2013161716A1 WO2013161716A1 PCT/JP2013/061661 JP2013061661W WO2013161716A1 WO 2013161716 A1 WO2013161716 A1 WO 2013161716A1 JP 2013061661 W JP2013061661 W JP 2013061661W WO 2013161716 A1 WO2013161716 A1 WO 2013161716A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- absorber
- region
- width direction
- disposed
- wearer
- Prior art date
Links
Images
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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49001—Absorbent articles specially adapted to be worn around the waist, e.g. diapers having preferential bending zones, e.g. fold lines or grooves
-
- 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
- A61F13/53—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 absorbing medium
- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/535—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
-
- 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
- A61F13/53—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 absorbing medium
- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/535—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
- A61F2013/5355—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes with terraced core
Definitions
- the present invention relates to an absorbent article having a curved portion that can bend the absorber.
- Patent Document 1 discloses an absorptivity as a disposable diaper configured such that a groove portion along the front-rear direction is formed in an absorbent body that absorbs the excrement of the wearer, and the absorbent body can be bent toward the wearer.
- An article is disclosed.
- This disposable diaper is configured such that the three grooves formed in the absorber bend when worn.
- the central groove part peripheral part is convex toward the wearer's excretion opening, and the middle groove part peripheral part located on the outer side in the width direction from the central groove part is convex to the opposite side of the central groove part, That is, it becomes concave with respect to the excretion opening.
- the disposable diaper described above has the following problems.
- the groove portion formed in the absorbent body is formed not only in the crotch region applied to the wearer's crotch but also in the rear waistline region and the front region located at the rear and front of the crotch region.
- the rear waistline region behind the crotch region is arranged so as to contact the wearer's buttocks. If a concave portion or a convex portion is formed in the rear waistline region, the absorber is not easily deformed into a curved shape in the front-rear direction, and the absorber may not be disposed along the roundness of the buttocks. Therefore, an absorber is not arrange
- the present invention can improve the absorption performance by increasing the area of the absorbent body disposed in the crotch portion of the wearer, and can improve the fit by arranging the absorbent body along the wearer's body.
- An object is to provide an absorbent article.
- the disposable diaper according to the present invention includes a front-rear direction (front-rear direction L) extending to the wearer's body front side and rear body side, a width direction (width direction W) orthogonal to the front-rear direction, and an inward direction toward the wearer.
- a crotch region (inseam region S3) applied to the crotch portion of the wearer, and a front side of the crotch region.
- An absorbent article comprising a front waistline region (front waistline region S1) disposed on the rear waistline region (rear waistline region S2) disposed behind the crotch region, and disposed at least in the crotch region
- the crotch region has an inclined portion (inclined portion 9C) that goes to the outer side in the width direction as it goes rearward in a region on the outer side in the width direction than the absorber.
- a leg-hole opening (leg-hole opening 9) is formed along the crotch region, and the crotch region is configured to allow the absorber to bend outwardly in a pair.
- a side curved portion is formed along the front-rear direction, and passes through an intermediate point in the width direction between the widthwise end of the rear waistline region and the widthwise center of the side curved portion in plan view, and the front-rear direction
- a first intersection where the intermediate line along the direction intersects with the leg opening is located on the inclined part, and in a plan view, a tangent line of the leg opening at the first intersection
- the gist is that a second intersection where a side curved line extending through the center in the width direction of the side curved portion and extending in the front-rear direction intersects is located behind the side curved portion.
- FIG. 3 is a cross-sectional view in the width direction of the disposable diaper along the line X1-X′1 shown in FIG. 2.
- FIG. 3 is a longitudinal sectional view of the disposable diaper along the line X′2-X2 shown in FIG. 2. It is the elements on larger scale of the leg periphery opening part in the expansion
- FIG. 12 is a front-rear direction cross-sectional view of the disposable diaper along the line X′3-X3 shown in FIG. 11.
- the disposable diaper according to the present embodiment is formed with a pair of side curved parts formed so that the absorbent body can be bent in an outward direction away from the wearer, and the legs around the region behind the side curved parts. It is configured to be pulled up by the opening and to suppress deformation due to the side bend.
- FIG. 1 is a schematic perspective view of the disposable diaper 1 which comprises a disposable diaper in this embodiment.
- FIG. 2 is a developed plan view of the disposable diaper 1 according to the present embodiment.
- FIG. 3 is a cross-sectional view in the width direction of the disposable diaper 1 taken along line X1-X′1 shown in FIG.
- FIG. 4 is a cross-sectional view in the front-rear direction of the disposable diaper 1 taken along line X′2-X2 shown in FIG.
- the disposable diaper 1 is a pants-type disposable diaper.
- the disposable diaper 1 includes a front-rear direction L extending to the wearer's body front side and a rear body side, a width direction W orthogonal to the front-rear direction L, an inward direction IN toward the wearer, and an outward direction toward the opposite side to the inner direction. And a thickness direction T having OUT.
- the disposable diaper 1 has a front waistline region S1 applied to the wearer's front waistline, a rear waistline region S2 applied to the wearer's back waist, and a wear in the front-rear direction L of the disposable diaper 1.
- a crotch region S3 that is applied to the person's crotch and is located between the front waistline region S1 and the rear waistline region S2.
- the crotch region S3 includes a central crotch region S32 that is narrowest when the leg is closed at the wearer's crotch region, a front crotch region S31 located between the central crotch region S32 and the front waistline region S1, and a central crotch A rear crotch region S33 located between the region S32 and the rear waistline region S2.
- the front waistline edge 4 located on one outer side in the width direction of the disposable diaper 1 in the front waistline region S1 is joined to the rear waistline edge 6 located on the one outer side in the width direction of the rear waistline region S2, and the other width
- the disposable diaper 1 is formed in a pants shape by joining the front waistline edge portion 4 ′ located on the outer side in the direction and the rear waistline edge portion 6 ′ located on the other outside in the width direction.
- a joint portion 11 is formed by joining the edges of each other, and the crotch region S3 is a region on the inner side in the front-rear direction than the joint portion 11. .
- the disposable diaper 1 is disposed in a pants-shaped state so as to surround a waist opening 8 disposed around the waist of the wearer, and to surround the wearer's legs.
- a pair of leg-hole openings 9 are formed. The configuration of the leg opening 9 will be described in detail later.
- the disposable diaper 1 includes an absorbent body 1A including a top sheet 10, an absorber 40, an absorber back sheet 30, and the like, and an exterior body 1B including a front exterior top sheet 70F, a rear exterior top sheet 70R, an exterior back sheet 80, and the like. These are joined to each other by an adhesive, heat fusion, or the like.
- the exterior body 1B includes a front exterior topsheet 70F, a rear exterior topsheet 70R, and an exterior backsheet 80, and constitutes an exterior portion of the disposable diaper 1.
- the front exterior topsheet 70F is disposed across the front waistline region S1 and the front crotch region S31.
- the rear exterior topsheet 70R is disposed across the rear waistline region S2 and the rear crotch region S33.
- the front exterior topsheet 70F and the rear exterior topsheet 70R are spaced apart in the front-rear direction, and are disposed between the exterior backsheet 80 and the absorbent main body 1A in the thickness direction.
- the front exterior topsheet 70F and the rear exterior topsheet 70R can be formed of an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, a waterproof film, or the like.
- the front exterior topsheet 70F and the rear exterior topsheet 70R according to this embodiment are formed of an SMS nonwoven fabric having a basis weight of 15 g / m 2 made of polypropylene.
- the exterior backsheet 80 is located on the outer side when worn, that is, on the side away from the wearer's skin.
- the exterior backsheet 80 is disposed from the front waistline region S1 to the rear waistline region S2.
- the front-rear direction end of the exterior backsheet 80 is folded back to the skin contact surface side, and is disposed so as to wrap around the front-end outer end in the front-rear direction of the front exterior topsheet 70F (or the rear exterior topsheet 70R).
- the exterior backsheet 80 can be formed of an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, a waterproof film, or the like.
- the exterior backsheet 80 according to this embodiment is formed of a spunbonded nonwoven fabric having a basis weight of 17 g / m 2 made of polypropylene.
- the absorbent main body 1A includes a top sheet 10, a second sheet 15, an absorber back sheet, and a leak-proof portion, and is disposed closer to the wearer than the exterior body 1B.
- the top sheet 10 is a sheet that forms a skin contact surface that can be in direct contact with the skin of the wearer.
- the top sheet 10 is disposed closer to the skin contact surface than the absorber 40.
- the top sheet 10 is formed of a liquid-permeable sheet such as a hydrophilic nonwoven fabric or woven fabric, an apertured plastic film, or an apertured hydrophobic nonwoven fabric.
- the surface sheet 10 according to the present embodiment is formed of a hydrophilic point bond nonwoven fabric having a basis weight of 23 g / m 2 made of polypropylene.
- the second sheet 15 is joined to the non-skin contact surface side of the top sheet 10.
- the second sheet 15 is disposed between the top sheet 10 and the absorber 40.
- the topsheet 10 and the second sheet 15 according to the present embodiment are joined by an adhesive.
- an air-through nonwoven fabric or an opening film is used for the second sheet 15.
- the second sheet 15 of this embodiment is formed of 30 g / m 2 (hydrophilic) air-through nonwoven fabric.
- the absorber 40 is bonded to the composite sheet and the absorber back sheet by a hot melt adhesive between the composite sheet in which the top sheet 10 and the second sheet 15 are bonded and the absorber back sheet 30.
- Hot melt adhesives are applied respectively to the composite sheet and the back sheet, for example, by a spiral coating method, respectively painted in basis weight 5g / m 2, 8g / m 2.
- the rear end portion 40R of the absorber 40 is disposed in the crotch region S3, and the front end portion of the absorber 40 is disposed in the front waist region S1 at 40F.
- the length of the absorbent body in the front-rear direction is short.
- the weight of the pulp can be reduced while maintaining. By reducing the weight of the pulp while maintaining the basis weight of the pulp, the material cost can be reduced without impairing the absorption speed of the body fluid.
- the absorber is not limited to the configuration of the present embodiment as long as at least a part of the absorber is disposed in the crotch region.
- the front end 40F of the absorber 40 may be disposed in the front waistline region, and the rear end 40R of the absorber 40 may be disposed in the rear waistline region, or the front end of the absorber 40 40F may be disposed in the crotch region, and the rear end 40R of the absorber 40 may be disposed in the rear waistline region, the front end 40F of the absorber 40 may be disposed in the crotch region, and The rear end portion 40R of the absorber 40 may be disposed in the crotch region.
- the absorber 40 is formed of a mixed powder such as pulverized pulp or superabsorbent polymer.
- the absorbent body 40 is overlapped with the first absorbent layer 41 located on the non-skin contact surface side of the wearer and the second absorbent layer 42 located on the skin contact surface side of the wearer. (See FIG. 7).
- the first absorption layer 41 is formed with a central slit that constitutes the central curved portion and a side slit that constitutes the side curved portion.
- the central slit is formed at the center in the width direction of the first absorbent layer, and the side slits are formed at both outer sides in the width direction than the central slit.
- the absorbent body 40 is configured to bend when the disposable diaper 1 is worn by a central slit, a side slit, or the like formed in the absorbent body 40. The structure of the absorber will be described in detail later.
- the absorber back sheet 30 is provided on the non-skin contact surface side of the absorber 40.
- the absorber back sheet 30 is formed of a sheet such as a liquid-impermeable film (for example, polyethylene).
- the absorber back sheet 30 is disposed in the outer direction OUT with respect to the absorber, is liquid-impermeable, and functions as a liquid-impermeable sheet.
- the absorber back sheet 30 is disposed so as to extend outward in the front-rear direction from the absorber 40.
- the rear end 30R of the absorber back sheet 30 is arranged behind the rear end 40R of the absorber 40 and in the crotch region. Further, the front end portion 30F of the absorber back sheet 30 is located in front of the front end portion 40F of the absorber 40 and is disposed in the front waistline region S1.
- the absorber back surface sheet 30 should just be arrange
- the front end 30F of the absorber backsheet 30 may be disposed in the front waistline region, and the rear end 30R of the absorber backsheet 30 may be disposed in the back waistline, or the absorber back surface
- the front end 30F of the sheet 30 may be disposed in the crotch region, and the rear end 30R of the absorber back sheet 30 may be disposed in the rear waistline region, or the front end of the absorber back sheet 30 30F may be arrange
- the leak-proof part has a leak-proof side sheet 32 and a leak-proof elastic material 33, and is arranged along the front-rear direction at the width direction end of the absorber 40.
- the leak-proof side sheet 32 is provided so as to integrally wrap the top sheet 10 and the absorber back sheet 30 at both side ends in the width direction W of the absorber 40.
- the leak-proof side sheet 32 is formed of a sheet such as a liquid-impermeable nonwoven fabric. One end in the width direction of the leak-proof side sheet 32 is joined to the non-skin surface side surface of the absorber back sheet 30, and the other end in the width direction of the leak-proof side sheet 32 is the absorber.
- the side sheet 40 is folded back from the side in the width direction to the surface sheet side and joined to the surface of the surface sheet 10 on the skin contact surface side.
- the leak-proof side sheet 32 is joined to a top sheet or the like by a hot melt adhesive.
- a plurality of hot-melt adhesives are applied with a basis weight of 0.1 g / m 2 by bead coating.
- a hydrophobic nonwoven fabric sheet can be used for the leak-proof side sheet 32.
- an SMS nonwoven fabric of polypropylene having a basis weight of 15 g / m 2 was used.
- the leak-proof elastic material 33 is stuck between the absorber back sheet 30 and the leak-proof side sheet 32 in an expanded state.
- An example of the means for fixing the leakproof elastic material is a hot melt adhesive.
- spandex is used as the leak-proof elastic material 33 and coating is directly performed by the V slot method. More specifically, three leak-proof elastic members 33 are stretched and fixed at a thickness of 780 dtex and a stretching factor of 2.3 times.
- a waist gather 3 is provided in the front waistline region S1 and the back waistline region S2.
- the waist gather 3 has an elongated waist elastic material 3 ⁇ / b> A such as a synthetic rubber disposed so as to expand and contract along the width direction W of the absorber 40.
- the waist gather 3 is continuous from one front waistline edge 4 located on the outer side in the width direction W of the absorbent article 1 in the front waistline region S1 to the other front waistline edge 4 ′, and the absorbent article in the rear waistline region S2. 1 from the rear waistline edge 6 located on the outer side in the width direction W to the other rear waistline edge 6 ′.
- the waist elastic material 3A is fixed to the front exterior topsheet 70F or the rear exterior topsheet 70R and the exterior backsheet with an adhesive (for example, a hot-melt adhesive) in a stretched state.
- an adhesive for example, a hot-melt adhesive
- the hot-melt adhesive is applied by the V slot method.
- the waist elastic material 3A is composed of spandex. In the vicinity of the waist opening 8, the waist elastic material 3 ⁇ / b> A is stretched and fixed at a thickness of 940 dtex and a stretch ratio of 3.5 times, respectively, and the thickness of 780 dtex on the inner side in the front-rear direction than the elastic material, Eight stretches are fixed at the front and rear at an expansion ratio of 3.0.
- the thickness, the expansion magnification, and the number of the waist elastic material 3A are not limited to the above, and can be variously set.
- An absorbent article can be manufactured by a method including a step of combining the absorbent layer and a step of transporting the absorbent body or the like with a belt conveyor or the like and joining with a sheet material such as a surface sheet in the course of transport.
- the other steps can be manufactured according to known manufacturing methods.
- a positional shift may occur when the first absorption layer and the second absorption layer are overlapped.
- the width of the pair of side slits arranged on the left and right becomes narrow, and regular deformation becomes impossible, or the left and right unbalanced absorber becomes an adverse effect on the absorbability and wearing feeling.
- the left and right unbalanced absorber becomes an adverse effect on the absorbability and wearing feeling.
- a central slit or a side slit in either one of the first absorption layer and the second absorption layer, it is possible to prevent a positional shift of the side slit or the like.
- each member constituting the disposable diaper 1 described above for example, a material described in JP-A-2006-346439 may be used.
- FIG. 5 is a partially enlarged view of the leg-hole opening in the developed plan view shown in FIG.
- the leg opening 9 has an inclined portion 9 ⁇ / b> C that goes to the outer side in the width direction as it goes rearward in the region on the outer side in the width direction than the absorber 40.
- the inclined portion 9C has a curved shape in plan view, and is configured by an edge portion of the exterior body 1B.
- the exterior body 1B is disposed so as to be recessed inward in the width direction with respect to the absorbent main body 1A in a region overlapping the absorber in plan view.
- the width direction outer side edge part of 1 A of absorptive main bodies forms the linear leg periphery opening part 9.
- the leg-hole opening 9 is an inclined portion 9C that is an edge toward the inner side in the width direction from the outer end in the width direction of the exterior body 1B in the crotch region, and an outer edge in the width direction of the absorbent main body 1A. It is comprised by the parallel part 9S along the front-back direction.
- FIG. 6 is a rear perspective view schematically showing a wearing state of the disposable diaper according to the embodiment.
- the leg opening 9 is in close contact with the wearer's leg.
- An absorber 40 is disposed between the leg opening 9 in the width direction.
- the pair of leg openings 9 are arranged along the wearer's legs, and the absorbent body 40 therebetween is pulled outward in the width direction by the leg openings. The state facing the crotch of the wearer is maintained.
- an intermediate point (for example, the first intersection P1) between the widthwise end of the rear waistline region and the center of the side slit in the widthwise direction is a portion where the wearer's body swells most around the leg on the buttock side, The absorber is pulled up along the line of the opening around the leg of the part.
- an intermediate line CL passing through the intermediate point in the width direction between the width direction end 1W of the rear waistline region and the width direction center 46C of the side slit 46, and along the front-rear direction, and a leg opening
- the first intersection point P1 where 9 intersects is located on the inclined portion 9C.
- the second line where the tangent line T1 of the leg opening 9 at the first intersection P1 and the side curved line L2 passing through the center 46C in the width direction of the side slit and extending in the front-rear direction intersect.
- the intersection point P ⁇ b> 2 is configured to be located behind the side slit 46.
- the stretched state is a state in which the waist gathers 3 and the leg gathers are stretched to a state where no wrinkles such as the absorbent main body 1A and the exterior body 1B constituting the disposable diaper are formed.
- the convex deformation due to the side slits is less likely to be transmitted to the rear than the second intersection P ⁇ b> 2. Accordingly, the front side of the second intersection point P2 is deformed into a convex shape by the side slit 46, and the rear side of the second intersection point P2 is prevented from being transmitted rearward by the deformation by the side slit 46, and is kept flat. can do. Therefore, the area
- the leak-proof side sheet 32 functions as a sheet member disposed along the widthwise end of the absorber.
- the third intersection P3 has a front third intersection on the front leg opening 9 and a rear third intersection on the rear leg opening 9.
- the fourth intersection P4 where the tangent line T2 of the leg opening 9 at each third intersection and the side curved line L2 intersect is located on the outer side in the front-rear direction than the side slit 46.
- the fourth intersection P4 has a front fourth intersection on the front side curve line and a rear fourth intersection on the rear side curve line.
- the third intersection P3 is an intersection between the exterior body 1B and the absorbent main body 1A in the leg opening 9 and the lifting force of the leg opening 9 directly acts on the absorbent main body having the absorber 40.
- the fourth intersection P4 at which the tangent line T2 of the leg opening 9 at the third intersection P3 and the side curved line L2 intersect is disposed on the outer side in the front-rear direction than the side slit 46. The front and rear regions are pulled up by the leg opening.
- the front of the rear fourth intersection is deformed into a convex shape by the side slit, and the rear of the rear fourth intersection is suppressed by the side slit, and a flat state is easily maintained. Therefore, the area behind the rear fourth intersection can be arranged along the roundness of the buttocks, and the fit can be improved. Further, the rear side of the front fourth intersection is deformed into a convex shape by the side slit, and the front side of the front fourth intersection is suppressed by the side slit, and a flat state is easily maintained. Therefore, the area in front of the front fourth intersection can be arranged along the abdomen roundness, and the fit can be improved.
- the absorber 40 can be pulled up toward the wearer, and the absorber can be brought close to the crotch of the wearer. Even in the embodiment in which the leg gathers along the leg opening 9 are not provided as in the present embodiment, the absorber can be pulled up by the leg opening and the absorption performance can be improved while suppressing the material cost.
- the fourth intersection P4 where the tangent T1 of the leg opening 9 at the first intersection P1 and the absorbent main body 1A intersect is at least one of the rear end 46R and the front end 46F of the side slit 46. It is desirable to be provided so as to almost overlap. According to such a configuration, the deformation of the crotch region due to the side slit 46 is further difficult to be transmitted to the rear waistline region side or the front waistline region side.
- substantially overlap in the present embodiment is a state in which the distance between the fourth intersection P4 and the front end 46F or the rear end 46R of the side slit 46 is within 50 mm. In the present embodiment, the distance between the rear fourth intersection and the rear end 46R of the side slit is 9 mm.
- the leg opening 9 may have a curved shape in plan view, a linear shape in plan view, or a combination of a curved shape and a linear shape.
- the edge of the exterior body 1B may be linear, or the edge of the absorbent main body may be curved.
- FIG. 7 is a plan view of the absorber 40
- FIG. 8 is a perspective view of the absorber 40.
- the absorbent body 40 includes a first absorbent layer 41 and a second absorbent layer 42 that is disposed closer to the skin contact surface than the first absorbent layer 41.
- the 1st absorption layer 41 is located in a wearer's non-skin contact surface side
- the 2nd absorption layer 42 is located in a wearer's skin contact surface side.
- the absorber 40 is disposed across the crotch region S3 and the front waistline region S1.
- the length of the first absorbent layer 41 in the front-rear direction is longer than the length of the second absorbent layer 42 in the front-rear direction.
- the first absorbent layer 41 is disposed across the crotch region S3 and the front waistline region S1, and the second absorbent layer 42 is disposed in the crotch region S3.
- the length in the width direction of the first absorption layer 41 is longer than the length in the width direction of the second absorption layer 42.
- the first absorption layer 41 projects outward in the width direction from the second absorption layer 42.
- the 1st absorption layer 41 and the 2nd absorption layer 42 are comprised from cotton-like pulp and a polymer absorptive polymer (SAP).
- Absorber 40 for example, can be formed by mixing a pulp 100 ⁇ 500g / m 2 and SAP0 ⁇ 500g / m 2.
- the first absorbent layer 41 and the second absorbent layer 42 according to this embodiment is formed by mixing a pulp 260 g / m 2 and SAP160g / m 2.
- a central slit 45 and a pair of side slits 46 are formed in the first absorption layer 41.
- the central slit 45 has a vertically long shape extending along the front-rear direction L, and is formed across the central crotch region S32, the front crotch region S31, and the rear crotch region S33.
- the pair of side slits 46 are respectively formed on the outer side in the width direction than the central slit 45.
- the side slit 46 has a vertically long shape extending along the front-rear direction L, and is formed in the central crotch region S32.
- the side slits 46 are formed in the absorber 40 along the front-rear direction L such that the side slits 46 are convex in the outward direction OUT, that is, the absorber 40 is bent in a convex opposite to the central slit 45.
- FIG. 9 is a cross-sectional view (based on the line X1-X′1 in FIG. 2) schematically showing a wearing state of the disposable diaper 1.
- the crotch region S3 of the absorbent body is applied to the wearer's crotch.
- a force is applied to the absorber from the outer side in the width direction toward the inner side in the width direction by the wearer's legs and the like.
- the absorber 40 is deformed inward and outward with the central slit 45 and the side slits 46 as base points.
- the cross-sectional shape along the width direction W of the disposable diaper 1 is deformed into a wave shape, and the central crotch region S32 of the crotch region S3 of the absorber 40 is regularly folded.
- the absorbent body 40 in the crotch region S3 is appropriately folded even when the area of the absorbent body is increased in order to ensure the absorption performance, and the absorbent body 40 and the excretory opening Can be brought into close contact with each other.
- the rear end portion of the absorbent body is disposed in the crotch region, and even if the length of the absorbent body in the front-rear direction is relatively short, the absorption performance is improved, Leakage can be suppressed.
- the top surface of the absorbent body 40 comes into contact with the crotch portion of the wearer.
- the portion where the convex portion by the central slit 45 is formed is constituted only by the second absorption layer 42 and is relatively thin.
- the first absorbent layer 41 and the second absorbent layer 42 are overlapped between the convex portion due to the central slit and the convex portion due to the side slit, and the thickness is relatively thick and the rigidity is high.
- the convex portion by the central slit is supported by the portion having high rigidity between the central slit and the side slit, and the stability of the convex shape toward the wearer can be improved.
- the cross-sectional shape of the disposable diaper 1 is folded around the central slit and the side slit of the absorbent body, and is placed compactly below the crotch portion in close contact with each other. Therefore, the absorption performance can be ensured while suppressing the uncomfortable feeling near the crotch part.
- the inwardly convex portion formed by the central slit 45 is positioned so as to contact the wearer's crotch portion.
- the outwardly convex portion formed by the side slit 46 is convex toward the non-skin contact surface side, and is in a position where it is difficult to contact the wearer's excretion opening.
- the absorbent body Since the absorbent body is in close contact with the wearer's crotch, it is possible to prevent leakage of bodily fluids even when urine with a slow urine speed that is transmitted to the skin is discharged. Further, in the folded state, a dent extending in the front-rear direction is formed in the bent portion away from the skin of the absorber, so that the body fluid can be diffused outward in the front-rear direction, and side leakage is prevented. be able to. Furthermore, since the side curved portion forms a concave portion, excrement can easily enter the concave portion, and direct contact between the wearer's skin and excrement can be suppressed.
- the convex part formed by the central curved part is thin and high in height. Therefore, the cross-sectional shape when the absorbent body 40 is deformed by wearing the disposable diaper 1 is a tapered shape that becomes narrower from the non-skin contact surface side toward the skin contact surface side. It becomes easy to be inserted into a narrow gap in the crotch part, and it becomes easy to make close contact with the excretion opening. Since the urination opening and the absorbent body are in close contact with each other, the excreted urine can be absorbed quickly. Furthermore, the absorbent body easily fits in the gap between the crotch portions of the wearer, and does not give a sense of discomfort. Moreover, in the part close
- the first absorbent layer 41 has a length in the width direction that decreases from the front crotch region S31 toward the center crotch region S32, and a length in the width direction decreases from the back crotch region S33 toward the center crotch region S32. Yes.
- the first absorbent layer 41 is formed with a recessed portion 41N that is recessed inward in the width direction from the front crotch region S31 toward the center crotch region S32.
- the recessed portion 41N is located in front of the side slit 46 and functions as a deformation suppressing portion.
- the recess 41N is formed in front of the side slit 46, it is possible to make it difficult to transmit the deformation caused by the side slit 46 to the front waistline region S1. Therefore, it is possible to suppress the absorber 40 from being deformed into a convex shape in front of the recessed portion 41N and arrange the absorber 40 along the wearer's skin.
- the second absorbent layer 42 has a substantially hourglass shape.
- the second absorption layer is located in the center portion in the front-rear direction and has a narrow portion 42N having a predetermined width in the width direction W, and is located in front of the narrow portion 42N, and has a width that is longer than the narrow portion. It has a wide part 42FL and a rear wide part 42RL located on the rear side of the narrow part 42N and having a width wider than that of the narrow part.
- the side end of the narrow portion 42N, the side end of the front wide portion 42FL, and the side end of the rear wide portion 42RL are connected by a curve, and the second absorbent layer 42 has an hourglass planar shape.
- the first absorption layer 41 and the second absorption layer 42 are integrated by being pressed along the thickness direction T.
- the 1st absorption layer 41 and the 2nd absorption layer 42 may be integrated by the adhesive agent, heat sealing
- the first absorbent layer 41 is located on the non-skin contact surface side
- the second absorbent layer 42 is located on the skin contact surface side.
- the first absorbent layer 41 may be located on the skin contact surface side, located on the contact surface side.
- the outer end of the narrow portion 42N and the inner end of the side slit 46 coincide. According to such a configuration, a difference in rigidity of the absorber 40 is formed at the end portion in the width direction of the side slit 46, and the absorber can be bent stably with the side slit 46 as a base point.
- the end of the second sheet 15 is located inside the side slit.
- the region where the second sheet 15 is disposed and the region where the second sheet 15 is not disposed are different in rigidity.
- the end in the width direction of the rear wide portion 42RL extends from the inner side in the width direction toward the outer side in the width direction behind the side slit.
- the widthwise end of the rear wide portion functions as a deformation suppressing portion 42P.
- the deformation suppressing part 42P is arranged behind the side slit.
- the deformation suppressing part 42P is arranged so as to extend from the inner side in the width direction toward the outer side in the width direction as it goes rearward from the narrow part 42N of the second absorption layer 42.
- Only the first absorption layer 41 is disposed in the region in front of the deformation suppressing portion 42P, but in the region in the rear of the deformation suppressing portion 42P, the first absorption layer 41 and the second absorption layer are overlapped, A difference in rigidity of the absorber occurs in the deformation suppressing portion. Therefore, it becomes difficult to transmit the deformation in front of the deformation suppressing portion 42P to the rear.
- the deformation suppressing portions in front and rear of the side slits, it is possible to prevent the absorber from being deformed in the crotch region and to transmit the deformation to the rear waistline region and the front waistline region. Further, even when the front waistline region S1 and the rear waistline region S2 of the absorber are deformed, the deformation is difficult to be transmitted to the crotch region, so that the absorber 40 is stably bent into a convex shape in the crotch region S3. be able to.
- the deformation suppressing portion behind the side slit 46, it is possible to suppress the deformation due to the side slit from being transmitted rearward by the lifting force by the leg opening and the deformation suppressing portion.
- the deformation suppressing portion only needs to be arranged in a region behind the side slit, but more preferably, it is arranged so as to overlap at least the second intersection point P2 on the side curved portion line.
- the fifth intersection P5 between the tangent line T3 of the deformation suppressing portion 42P and the side curved portion line L2 is located behind the side slit 46, and the deformation of the side slit is changed to the fifth intersection P5. This makes it difficult to transmit to the rear, and makes it easier to maintain the area behind the fifth intersection P5 in a flat state.
- the tangent line T3 of the deformation suppressing portion 42P and the tangent line T1 of the leg opening 9 at the first intersection P1 are substantially parallel. According to this structure, the synergistic effect of the raising function by the leg periphery opening part 9 and the function which suppresses the deformation
- substantially parallel in the present embodiment is a state where the angle formed by the tangent of the deformation suppressing portion 42P and the tangent of the leg opening at the first intersection is within 10 degrees. In the present embodiment, the difference in angle between the tangent line of the deformation suppressing portion 42P and the tangent line of the leg opening at the first intersection is 2 degrees.
- the center in the front-rear direction of the side slit that constitutes the side curved portion is disposed in front of the center in the front-rear direction of the absorber, and the deformation suppressing portion 42P is disposed in the crotch region.
- the rear waistline region can be disposed along the wearer's body while the crotch region is deformed and the rear waistline region is not deformed. it can.
- the deformation suppressing portion is disposed across the rear of the side curved portion from the inner side in the width direction to the outer side in the width direction than the side slit. According to such a structure, the deformation
- the deformation suppressing unit can employ various configurations.
- the deformation suppressing portion is a constricted portion in which the side portion of the absorber is bound inward in the width direction, a slit formed in the absorber, a low weight area that is lower in weight than the surrounding weight in the absorber, It can be comprised by at least any one among the pressing part which squeezed the absorber in the thickness direction, the width expansion-contraction member which expands-contracts in the width direction, and the absorber.
- FIG. 10 is a plan view of the disposable diaper according to the first modification.
- the absorber 40 is comprised only by 1 layer.
- the absorber 40 has a substantially rectangular planar shape.
- a central slit 45 and side slits 46 are formed in the absorber. *
- the second intersection point P ⁇ b> 2 is located behind the side slit 46.
- a rear pressing portion 43R as a deformation suppressing portion is formed behind the side slit 46.
- transformation suppression part is formed also in front of the side slit.
- the front pressing part 43F and the rear pressing part 43R are formed by embossing. *
- the inclined portion 9C at the edge of the exterior body 1B and the parallel portion 9S of the absorbent main body 1A intersect at the third intersection point P3.
- the tangent line T2 of the inclined portion 9C at the third intersection P3 is arranged so as to overlap the front pressing portion and the rear pressing portion.
- FIG. 11 is a plan view of a disposable diaper according to the second modification.
- 12 is a front-rear direction cross-sectional view of the disposable diaper along the line X'3-X3 shown in FIG.
- the exterior backsheet according to Modification 2 includes a front exterior backsheet 80F joined to the front exterior topsheet 70F, and a rear exterior backsheet 80R joined to the rear exterior topsheet 70R.
- a non-woven fabric sheet 35 is provided on the non-skin contact side of the absorber back sheet 30.
- the front exterior topsheet 70F and the rear exterior topsheet 70R are provided on the non-skin contact side of the nonwoven fabric sheet 35.
- the front exterior topsheet 70F and the front exterior backsheet 80F are joined to the nonwoven fabric sheet 35 constituting the absorbent main body 1A in the vicinity of the front end portion 40F of the absorbent body 40.
- the rear exterior topsheet 70R and the rear exterior backsheet 80R are joined to the nonwoven fabric sheet 35 in the vicinity of the rear end 40R of the absorber 40.
- the absorber 40 has a first absorption layer 41 and a second absorption layer 42.
- the first absorption layer 41 and the second absorption layer 42 have the same length, and in the width direction, the first absorption layer 41 extends outward in the width direction from the second absorption layer 42. .
- a central slit and a side slit are formed in the first absorption layer 41.
- the intermediate line L1 and the leg opening 9 intersect at the first intersection P1.
- the tangent line T1 of the leg opening 9 at the first intersection P1 and the side curved line L2 intersect at the second intersection P2.
- the second intersection point P ⁇ b> 2 is located behind the side slit 46.
- a leg gather 5 is provided around the leg opening 9. At least a part of the leg gather 5 is disposed along the leg opening 9.
- the leg gathers 5 are formed by a front leg elastic member 5F disposed in the front waistline region S1, and a rear leg elastic member 5R disposed across the rear waist region S2 and the crotch region S3. .
- the rear leg elastic member 5R is disposed from the rear waistline region S2 to the crotch region S3, and is disposed so as to go inward in the width direction from the rear waistline region S2 to the crotch region S3.
- the front leg-holes elastic member 5F is disposed along the width direction in the front waistline region S1.
- the front leg elastic member 5F and the rear leg elastic member 5R in the region on the outer side in the width direction from the absorber 40 and the front leg elastic member 5F and the rear leg elastic member 5R in the region overlapping with the absorber 40 are linked and absorbed. It functions to raise the body 40 toward the wearer.
- the front leg elastic member 5F is disposed between the front exterior topsheet 70F and the exterior backsheet 80
- the rear leg elastic member 5R is disposed between the rear exterior topsheet 70R and the exterior backsheet 80.
- the waist elastic material 3A is bonded between the front exterior topsheet 70F or the rear exterior topsheet 70R and the front exterior backsheet 80F or the rear exterior backsheet 80R.
- the leakproof elastic material 33 is arranged so as to be substantially continuous with the leg gathers in plan view. By arranging the leak-proof elastic material and leg gathers in this way, it can be tightened to surround the foot of the wearer, improving the fit of the leg and improving the effect of preventing the displacement and leakage of disposable diapers. can get.
- the pants-type disposable diaper has been described.
- the present invention is not limited thereto, and may be applied to an open-type disposable diaper, an incontinence pad, a sanitary napkin, and the like. Good.
- a locking member such as a fastening tape is provided in the rear waistline region, and a target portion on which the locking member is caught is provided in the front waistline region.
- the fourth intersection where the tangent of the inclined portion and the side curve line intersect at the third intersection is located on the outer side in the front-rear direction than the side curve.
- the fourth intersection point where the tangent to the inclined portion and the side curved line at the third intersection point may be located on the inner side in the front-rear direction than the side curved portion.
- the absorbent article according to the present invention does not necessarily have to be provided with a deformation suppressing portion. Even if it is a case where a deformation
- the absorbent article may be provided with the center music part and the side music part, it should just be provided with the side music part at least, and does not need to provide both the center music part and the side music part.
- the center in the front-rear direction of the side slit may coincide with the center in the front-rear direction of the absorber, or may be arranged behind the center in the front-rear direction of the absorber.
- the side curved portion may be connected to the deformation control unit and may be curved so as to go from the inner side in the front-rear direction toward the outer side in the front-rear direction.
- the center curved part and the side curved part of this Embodiment are comprised by the slit formed in the absorber, the structure of a central curved part and a side curved part is not restricted to a slit.
- the central curved portion and the side curved portion may be configured by an elastic material that expands and contracts in the front-rear direction, may be configured by a compressed portion that compresses the absorbent body in the thickness direction, and the weight of the surroundings in the absorbent body You may be comprised by the low weight area comprised lower than.
- a slit may be formed in the absorber, and an elastic material that expands and contracts in the front-rear direction so as to overlap the slit may be provided, and the central curved portion and the side curved portion may be configured by the slit and the elastic material.
- the absorbent body 40 has a two-absorbent layer structure of a first absorbent layer 41 and a second absorbent layer 42.
- the absorbent body 40 of the wearing article according to the present invention is configured by only one absorbent layer. It may be composed of three or more layers.
- Disposable diapers (absorbent articles) 3 ... Waist gather 3A ... Waist elastic material 4, 4 '... Front waistline edge 5 ... Leg gather 5F ... Front leg circumference elastic material 5R ... Rear leg circumference elastic material 6, 6' ... Rear waistline edge 8 ... Waist circumference opening DESCRIPTION OF SYMBOLS 9 ... Leg circumference opening part 10 ... Surface sheet 15 ... Second sheet 30 ... Absorber back surface sheet 30F ... Front side edge part 30R ... Rear side edge part 32 ... Leakage prevention side sheet 33 ... Leakage prevention elastic material 35 ... Nonwoven fabric sheet 40 ... Absorption Body 41 ... first absorbent layer 41N ... dent 42 ... second absorbent layer 42FL ...
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)
Abstract
A disposable diaper (1) has an absorbent body (40) disposed in, at least, an inseam region. A pair of side slits (46) designed to allow the absorbent body to curve convexly are formed in the inseam region. In a planar view, the intersection (P2) of the following lines is located rearwards of the side slits (46): a line (T1) tangent to a leg opening at the location of a halfway line (L1) that passes through the widthwise halfway point between a widthwise edge of a rear waist region and the widthwise center of a side curved section; and a side-curved-section line (L2) that passes through the widthwise center of the side slits and extends in the front-rear direction.
Description
本発明は、吸収体を曲げることができる曲部を有する吸収性物品に関する。
The present invention relates to an absorbent article having a curved portion that can bend the absorber.
吸収性物品は、着用者の装着感向上や***物の漏れ防止を図るため、様々な工夫がなされている。例えば、特許文献1には、着用者の***物を吸収する吸収体に前後方向に沿った溝部を形成し、吸収体を着用者側に曲げることができるように構成した使い捨ておむつとしての吸収性物品が開示されている。
Absorbent articles have been devised in various ways to improve the wearer's wearing feeling and prevent excrement leakage. For example, Patent Document 1 discloses an absorptivity as a disposable diaper configured such that a groove portion along the front-rear direction is formed in an absorbent body that absorbs the excrement of the wearer, and the absorbent body can be bent toward the wearer. An article is disclosed.
この使い捨ておむつは、吸収体に形成された3本の溝部が着用時に曲がるように構成されている。中央の溝部周辺部分は、着用者の***口に向けて凸状となり、中央の溝部より中も幅方向外側に位置する中間の溝部周辺部分は、中央の溝部周辺部分と逆側に凸状、すなわち***口に対して凹状となる。
This disposable diaper is configured such that the three grooves formed in the absorber bend when worn. The central groove part peripheral part is convex toward the wearer's excretion opening, and the middle groove part peripheral part located on the outer side in the width direction from the central groove part is convex to the opposite side of the central groove part, That is, it becomes concave with respect to the excretion opening.
すなわち、吸収体には、幅方向に沿って凸状部分と凹状部分とが交互に隣接して形成される。このように構成された使い捨ておむつは、吸収体が着用時に溝部を基点にして曲がるため、吸収体がフラットな状態の使い捨ておむつと比較して、着用者の股下域に当接する吸収体の面積が大きくなり、吸収性能が高くなる。(特許文献1、図2及び図3等)
That is, convex portions and concave portions are alternately formed adjacent to each other along the width direction in the absorber. The disposable diaper configured in this way is bent with the groove as a starting point when the absorbent body is worn, and therefore, the absorbent body contacting the wearer's crotch area is smaller than the disposable diaper in a state where the absorbent body is flat. Increases the absorption performance. (Patent Document 1, FIG. 2, FIG. 3, etc.)
しかしながら、上述した使い捨ておむつにおいては、以下の問題があった。
However, the disposable diaper described above has the following problems.
吸収体に形成される溝部は、着用者の股間に当てられる股下領域のみならず、股下領域よりも後方や前方に位置する後胴回り領域や前側領域にも形成されている。
The groove portion formed in the absorbent body is formed not only in the crotch region applied to the wearer's crotch but also in the rear waistline region and the front region located at the rear and front of the crotch region.
例えば、股下領域よりも後方の後胴回り領域は、着用者の臀部に接するように配置される。この後胴回り領域に凹状部分や凸状部分が形成されていると、吸収体が前後方向において曲線状に変形し難くなり、臀部の丸みに沿って吸収体が配置されないことがある。よって、身体に沿って吸収体が配置されず、フィット性が低下するおそれがある。
For example, the rear waistline region behind the crotch region is arranged so as to contact the wearer's buttocks. If a concave portion or a convex portion is formed in the rear waistline region, the absorber is not easily deformed into a curved shape in the front-rear direction, and the absorber may not be disposed along the roundness of the buttocks. Therefore, an absorber is not arrange | positioned along a body and there exists a possibility that fit property may fall.
そこで、本発明は、着用者の股間部に配置される吸収体の面積を増やして吸収性能を向上させ、かつ着用者の身体に沿って吸収体を配置して、フィット性を高めることができる吸収性物品を提供することを目的とする。
Therefore, the present invention can improve the absorption performance by increasing the area of the absorbent body disposed in the crotch portion of the wearer, and can improve the fit by arranging the absorbent body along the wearer's body. An object is to provide an absorbent article.
本発明に係る使い捨ておむつは、着用者の身体前側と身体後側とに延びる前後方向(前後方向L)と、前記前後方向に直交する幅方向(幅方向W)と、着用者に向かう内方向(内方向IN)と、前記内方向と反対側に向かう外方向(外方向OUT)とを有し、前記着用者の股間部に当てられる股下領域(股下領域S3)と、前記股下領域の前方に配置される前胴回り領域(前胴回り領域S1)と、前記股下領域の後方に配置される後胴回り領域(後胴回り領域S2)と、を備える吸収性物品であって、少なくとも前記股下領域に配置される吸収体(吸収体40)を有しており、前記股下領域には、前記吸収体よりも幅方向外側の領域において後方に向かうにつれて前記幅方向外側に向かう傾斜部(傾斜部9C)を有し、かつ前記着用者の脚回りに沿って配置される脚回り開口部(脚回り開口部9)が形成されており、前記股下領域には、前記吸収体が前記外方向に凸に曲がることができるように構成された一対のサイド曲部が前記前後方向に沿って形成されており、平面視において、前記後胴回り領域の幅方向端部と前記サイド曲部の幅方向中心との幅方向の中間点を通り、かつ前記前後方向に沿った中間ラインと、前記脚回り開口部と、が交わる第1交点は、前記傾斜部上に位置しており、平面視において、前記第1交点における前記脚回り開口部の接線と、前記サイド曲部の幅方向中心を通り、かつ前記前後方向に延びるサイド曲部ラインと、が交わる第2交点は、前記サイド曲部よりも後方に位置することを要旨とする。
The disposable diaper according to the present invention includes a front-rear direction (front-rear direction L) extending to the wearer's body front side and rear body side, a width direction (width direction W) orthogonal to the front-rear direction, and an inward direction toward the wearer. A crotch region (inseam region S3) applied to the crotch portion of the wearer, and a front side of the crotch region. An absorbent article comprising a front waistline region (front waistline region S1) disposed on the rear waistline region (rear waistline region S2) disposed behind the crotch region, and disposed at least in the crotch region The crotch region has an inclined portion (inclined portion 9C) that goes to the outer side in the width direction as it goes rearward in a region on the outer side in the width direction than the absorber. And having the leg rotation of the wearer A leg-hole opening (leg-hole opening 9) is formed along the crotch region, and the crotch region is configured to allow the absorber to bend outwardly in a pair. A side curved portion is formed along the front-rear direction, and passes through an intermediate point in the width direction between the widthwise end of the rear waistline region and the widthwise center of the side curved portion in plan view, and the front-rear direction A first intersection where the intermediate line along the direction intersects with the leg opening is located on the inclined part, and in a plan view, a tangent line of the leg opening at the first intersection, The gist is that a second intersection where a side curved line extending through the center in the width direction of the side curved portion and extending in the front-rear direction intersects is located behind the side curved portion.
次に、実施の形態に係る吸収性物品としての使い捨ておむつの実施形態について、図面を参照しながら説明する。なお、以下の図面の記載において、同一または類似の部分には、同一または類似の符号を付している。ただし、図面は模式的なものであり、各寸法の比率などは現実のものとは異なることに留意すべきである。従って、具体的な寸法などは以下の説明を参酌して判断すべきである。また、図面相互間においても互いの寸法の関係や比率が異なる部分が含まれ得る。
Next, an embodiment of a disposable diaper as an absorbent article according to the embodiment will be described with reference to the drawings. 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.
本実施形態に係る使い捨ておむつは、吸収体が着用者から離れる外方向に凸に曲がることができるように構成された一対のサイド曲部が形成され、サイド曲部よりも後方の領域を脚回り開口部によって引き上げ、サイド曲部による変形を抑制するように構成されていることを特徴とする。
The disposable diaper according to the present embodiment is formed with a pair of side curved parts formed so that the absorbent body can be bent in an outward direction away from the wearer, and the legs around the region behind the side curved parts. It is configured to be pulled up by the opening and to suppress deformation due to the side bend.
(1)使い捨ておむつの全体概略構成
図1は、本実施形態において使い捨ておむつを構成する使い捨ておむつ1の概略斜視図である。図2は、本実施形態に係る使い捨ておむつ1の展開平面図である。図3は、図2に示すX1-X’1線に沿った使い捨ておむつ1の幅方向断面図である。図4は、図2に示すX’2-X2線に沿った使い捨ておむつ1の前後方向断面図である。使い捨ておむつ1は、パンツ型の使い捨ておむつである。 (1) Whole schematic structure of disposable diaper FIG. 1: is a schematic perspective view of thedisposable diaper 1 which comprises a disposable diaper in this embodiment. FIG. 2 is a developed plan view of the disposable diaper 1 according to the present embodiment. FIG. 3 is a cross-sectional view in the width direction of the disposable diaper 1 taken along line X1-X′ 1 shown in FIG. FIG. 4 is a cross-sectional view in the front-rear direction of the disposable diaper 1 taken along line X′2-X2 shown in FIG. The disposable diaper 1 is a pants-type disposable diaper.
図1は、本実施形態において使い捨ておむつを構成する使い捨ておむつ1の概略斜視図である。図2は、本実施形態に係る使い捨ておむつ1の展開平面図である。図3は、図2に示すX1-X’1線に沿った使い捨ておむつ1の幅方向断面図である。図4は、図2に示すX’2-X2線に沿った使い捨ておむつ1の前後方向断面図である。使い捨ておむつ1は、パンツ型の使い捨ておむつである。 (1) Whole schematic structure of disposable diaper FIG. 1: is a schematic perspective view of the
使い捨ておむつ1は、着用者の身体前側と身体後側とに延びる前後方向Lと、前後方向Lに直交する幅方向Wと、着用者に向かう内方向IN及び内方向と反対側に向かう外方向OUTを有する厚み方向Tと、を有する。
The disposable diaper 1 includes a front-rear direction L extending to the wearer's body front side and a rear body side, a width direction W orthogonal to the front-rear direction L, an inward direction IN toward the wearer, and an outward direction toward the opposite side to the inner direction. And a thickness direction T having OUT.
使い捨ておむつ1は、図2に示すように、使い捨ておむつ1の前後方向Lにおいて、着用者の前胴回りに当てられる前胴回り領域S1と、着用者の後胴回りに当てられる後胴回り領域S2と、着用者の股下に当てられ、前胴回り領域S1と後胴回り領域S2との間に位置する股下領域S3と、を有する。股下領域S3は、着用者の股間部で脚を閉じたときに最も幅が狭くなる中央股下領域S32と、中央股下領域S32と前胴回り領域S1の間に位置する前股下領域S31と、中央股下領域S32と後胴回り領域S2の間に位置する後股下領域S33と、を有する。
As shown in FIG. 2, the disposable diaper 1 has a front waistline region S1 applied to the wearer's front waistline, a rear waistline region S2 applied to the wearer's back waist, and a wear in the front-rear direction L of the disposable diaper 1. A crotch region S3 that is applied to the person's crotch and is located between the front waistline region S1 and the rear waistline region S2. The crotch region S3 includes a central crotch region S32 that is narrowest when the leg is closed at the wearer's crotch region, a front crotch region S31 located between the central crotch region S32 and the front waistline region S1, and a central crotch A rear crotch region S33 located between the region S32 and the rear waistline region S2.
前胴回り領域S1の使い捨ておむつ1の一方の幅方向外側に位置する前胴回り縁部4が、後胴回り領域S2の一方の幅方向外側に位置する後胴回り縁部6と接合され、かつ他方の幅方向外側に位置する前胴回り縁部4’が、他方の幅方向外側に位置する後胴回り縁部6’と接合されることによって、使い捨ておむつ1がパンツ型に形成される。パンツ型の使い捨ておむつの前胴回り領域及び後胴回り領域には、互いの縁部が接合された接合部11が形成されており、股下領域S3は、接合部11よりも前後方向内側の領域である。
The front waistline edge 4 located on one outer side in the width direction of the disposable diaper 1 in the front waistline region S1 is joined to the rear waistline edge 6 located on the one outer side in the width direction of the rear waistline region S2, and the other width The disposable diaper 1 is formed in a pants shape by joining the front waistline edge portion 4 ′ located on the outer side in the direction and the rear waistline edge portion 6 ′ located on the other outside in the width direction. In the front waistline region and the back waistline region of the pant-type disposable diaper, a joint portion 11 is formed by joining the edges of each other, and the crotch region S3 is a region on the inner side in the front-rear direction than the joint portion 11. .
使い捨ておむつ1には、図1に示すように、パンツ型に形成された状態で、着用者の腰回りを囲んで配置される腰回り開口部8と、着用者の脚回りを囲んで配置される一対の脚回り開口部9と、が形成される。脚回り開口部9の構成については、後述にて詳細に説明する。
As shown in FIG. 1, the disposable diaper 1 is disposed in a pants-shaped state so as to surround a waist opening 8 disposed around the waist of the wearer, and to surround the wearer's legs. A pair of leg-hole openings 9 are formed. The configuration of the leg opening 9 will be described in detail later.
使い捨ておむつ1は、表面シート10、吸収体40及び吸収体裏面シート30等を含む吸収性本体1Aと、前側外装トップシート70F、後側外装トップシート70R及び外装バックシート80等を含む外装体1Bと、から構成されており、これらは互いに、接着剤や熱融着などによって接合されている。
The disposable diaper 1 includes an absorbent body 1A including a top sheet 10, an absorber 40, an absorber back sheet 30, and the like, and an exterior body 1B including a front exterior top sheet 70F, a rear exterior top sheet 70R, an exterior back sheet 80, and the like. These are joined to each other by an adhesive, heat fusion, or the like.
外装体1Bは、前側外装トップシート70F、後側外装トップシート70R、外装バックシート80を含み、使い捨ておむつ1の外装部分を構成する。前側外装トップシート70Fは、前胴回り領域S1と前股下領域S31とに跨がって配置されている。後側外装トップシート70Rは、後胴回り領域S2と後股下領域S33とに跨がって配置されている。前側外装トップシート70Fと後側外装トップシート70Rとは、前後方向に離間して配置されており、厚み方向において外装バックシート80と、吸収性本体1Aとの間に配置される。
The exterior body 1B includes a front exterior topsheet 70F, a rear exterior topsheet 70R, and an exterior backsheet 80, and constitutes an exterior portion of the disposable diaper 1. The front exterior topsheet 70F is disposed across the front waistline region S1 and the front crotch region S31. The rear exterior topsheet 70R is disposed across the rear waistline region S2 and the rear crotch region S33. The front exterior topsheet 70F and the rear exterior topsheet 70R are spaced apart in the front-rear direction, and are disposed between the exterior backsheet 80 and the absorbent main body 1A in the thickness direction.
前側外装トップシート70F及び後側外装トップシート70Rは、エアスルー不織布、スパンボンド不織布、SMS不織布、防水フィルムなどによって形成できる。本実施形態に係る前側外装トップシート70F及び後側外装トップシート70Rは、ポリプロピレンからなる目付15g/m2のSMS不織布によって形成されている。
The front exterior topsheet 70F and the rear exterior topsheet 70R can be formed of an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, a waterproof film, or the like. The front exterior topsheet 70F and the rear exterior topsheet 70R according to this embodiment are formed of an SMS nonwoven fabric having a basis weight of 15 g / m 2 made of polypropylene.
外装バックシート80は、着用時において外側に位置する、つまり、着用者の肌から離れる側に配置される。外装バックシート80は、前胴回り領域S1から後胴回り領域S2に亘って配置されている。外装バックシート80の前後方向端部は、肌当接面側に折り返され、前側外装トップシート70F(又は後側外装トップシート70R)の前後方向の外側端部を包むように配置される。
The exterior backsheet 80 is located on the outer side when worn, that is, on the side away from the wearer's skin. The exterior backsheet 80 is disposed from the front waistline region S1 to the rear waistline region S2. The front-rear direction end of the exterior backsheet 80 is folded back to the skin contact surface side, and is disposed so as to wrap around the front-end outer end in the front-rear direction of the front exterior topsheet 70F (or the rear exterior topsheet 70R).
外装バックシート80は、エアスルー不織布、スパンボンド不織布、SMS不織布、防水フィルムなどによって形成できる。本実施形態に係る外装バックシート80は、ポリプロピレンからなる目付17g/ m2のスパンボンド不織布によって形成されている。
The exterior backsheet 80 can be formed of an air-through nonwoven fabric, a spunbond nonwoven fabric, an SMS nonwoven fabric, a waterproof film, or the like. The exterior backsheet 80 according to this embodiment is formed of a spunbonded nonwoven fabric having a basis weight of 17 g / m 2 made of polypropylene.
吸収性本体1Aは、表面シート10、セカンドシート15、吸収体裏面シート及び防漏部を含み、外装体1Bよりも着用者側に配置される。
The absorbent main body 1A includes a top sheet 10, a second sheet 15, an absorber back sheet, and a leak-proof portion, and is disposed closer to the wearer than the exterior body 1B.
表面シート10は、着用者の肌に直接的に接し得る肌当接面を形成するシートである。表面シート10は、吸収体40よりも肌当接面側に配置される。表面シート10は、親水性不織布や織物、開口プラスチックフィルム、開口疎水性不織布などの液透過性のシートによって形成されている。本実施の形態に係る表面シート10は、ポリプロピレンからなる目付23g/m2の親水性ポイントボンド不織布によって形成されている。
The top sheet 10 is a sheet that forms a skin contact surface that can be in direct contact with the skin of the wearer. The top sheet 10 is disposed closer to the skin contact surface than the absorber 40. The top sheet 10 is formed of a liquid-permeable sheet such as a hydrophilic nonwoven fabric or woven fabric, an apertured plastic film, or an apertured hydrophobic nonwoven fabric. The surface sheet 10 according to the present embodiment is formed of a hydrophilic point bond nonwoven fabric having a basis weight of 23 g / m 2 made of polypropylene.
表面シート10の非肌当接面側には、セカンドシート15が接合されている。セカンドシート15は、表面シート10と吸収体40との間に配置される。セカンドシート15を設けることにより、体液の吸収速度を速くすることができ、かつ吸収後における体液の逆戻りを抑制することができる。
The second sheet 15 is joined to the non-skin contact surface side of the top sheet 10. The second sheet 15 is disposed between the top sheet 10 and the absorber 40. By providing the second sheet 15, the absorption speed of the body fluid can be increased and the return of the body fluid after absorption can be suppressed.
本実施の形態に係る表面シート10とセカンドシート15は、接着剤によって接合されている。セカンドシート15は、例えば、エアスルー不織布や、開口フィルムなどが用いられる。本実施の形態のセカンドシート15は、エアスルー不織布30g/m2(親水性)によって形成されている。
The topsheet 10 and the second sheet 15 according to the present embodiment are joined by an adhesive. For example, an air-through nonwoven fabric or an opening film is used for the second sheet 15. The second sheet 15 of this embodiment is formed of 30 g / m 2 (hydrophilic) air-through nonwoven fabric.
吸収体40は、表面シート10とセカンドシート15とが接合された複合シートと、吸収体裏面シート30との間において、複合シートと吸収体裏面シートにホットメルト型接着剤によって接合される。ホットメルト型接着剤は、複合シート及び裏面シートにそれぞれ塗工され、例えば、スパイラル塗工方法により、それぞれ目付5g/m2,8g/m2で塗られる。
The absorber 40 is bonded to the composite sheet and the absorber back sheet by a hot melt adhesive between the composite sheet in which the top sheet 10 and the second sheet 15 are bonded and the absorber back sheet 30. Hot melt adhesives are applied respectively to the composite sheet and the back sheet, for example, by a spiral coating method, respectively painted in basis weight 5g / m 2, 8g / m 2.
吸収体40の後側端部40Rは、股下領域S3内に配置されており、吸収体40の前側端部は40F、前胴回り領域S1内に配置されている。吸収体の前側端部及び後側端部の両方が前胴回り領域及び後胴回り領域内に配置される形態と比較して、吸収体の前後方向の長さが短いため、吸収体のパルプの目付けを保ちつつ、パルプの重量を低減できる。パルプの目付けを保ちながらパルプ重量を低減することにより、体液の吸収スピードを損なわずに材料費を低減することができる。
The rear end portion 40R of the absorber 40 is disposed in the crotch region S3, and the front end portion of the absorber 40 is disposed in the front waist region S1 at 40F. Compared with a configuration in which both the front end portion and the rear end portion of the absorbent body are arranged in the front waistline region and the back waistline region, the length of the absorbent body in the front-rear direction is short. The weight of the pulp can be reduced while maintaining. By reducing the weight of the pulp while maintaining the basis weight of the pulp, the material cost can be reduced without impairing the absorption speed of the body fluid.
なお、吸収体は、少なくとも一部が股下領域に配置されていればよく、本実施の形態の構成に限定されない。例えば、吸収体40の前側端部40Fが前胴回り領域内に配置され、かつ吸収体40の後側端部40Rが後胴回り領域内に配置されていてもよいし、吸収体40の前側端部40Fが股下領域内に配置され、かつ吸収体40の後側端部40Rが後胴回り領域内に配置されていてもよいし、吸収体40の前側端部40Fが股下領域内に配置され、かつ吸収体40の後側端部40Rが股下領域内に配置されていてもよい。
Note that the absorber is not limited to the configuration of the present embodiment as long as at least a part of the absorber is disposed in the crotch region. For example, the front end 40F of the absorber 40 may be disposed in the front waistline region, and the rear end 40R of the absorber 40 may be disposed in the rear waistline region, or the front end of the absorber 40 40F may be disposed in the crotch region, and the rear end 40R of the absorber 40 may be disposed in the rear waistline region, the front end 40F of the absorber 40 may be disposed in the crotch region, and The rear end portion 40R of the absorber 40 may be disposed in the crotch region.
吸収体40は、粉砕パルプや高吸収性ポリマーなどの混合粉体で形成される。吸収体40は、着用者の非肌当接面側に位置する第1吸収層41と、第1吸収層41と重ねられ、かつ着用者の肌当接面側に位置する第2吸収層42と、によって構成されている(図7参照)。
The absorber 40 is formed of a mixed powder such as pulverized pulp or superabsorbent polymer. The absorbent body 40 is overlapped with the first absorbent layer 41 located on the non-skin contact surface side of the wearer and the second absorbent layer 42 located on the skin contact surface side of the wearer. (See FIG. 7).
第1吸収層41には、中央曲部を構成する中央スリットと、サイド曲部を構成するサイドスリットと、が形成されている。中央スリットは、第1吸収層の幅方向中央に形成され、サイドスリットは、中央スリットよりも幅方向の両外側に形成されている。吸収体40に形成された中央スリットやサイドスリット等によって、使い捨ておむつ1が着用された際に吸収体40が曲がるように構成されている。なお、吸収体の構造については、後述にて詳細に説明する。
The first absorption layer 41 is formed with a central slit that constitutes the central curved portion and a side slit that constitutes the side curved portion. The central slit is formed at the center in the width direction of the first absorbent layer, and the side slits are formed at both outer sides in the width direction than the central slit. The absorbent body 40 is configured to bend when the disposable diaper 1 is worn by a central slit, a side slit, or the like formed in the absorbent body 40. The structure of the absorber will be described in detail later.
吸収体裏面シート30は、吸収体40の非肌当接面側に設けられている。吸収体裏面シート30は、液不透過性フィルムなど(例えば、ポリエチレン)のシートによって形成されている。吸収体裏面シート30は、吸収体よりも外方向OUTに配置され、かつ液不透過性であり、液不透過性シートとして機能する。吸収体裏面シート30は、吸収体40よりも前後方向外側に延出して配置されている。
The absorber back sheet 30 is provided on the non-skin contact surface side of the absorber 40. The absorber back sheet 30 is formed of a sheet such as a liquid-impermeable film (for example, polyethylene). The absorber back sheet 30 is disposed in the outer direction OUT with respect to the absorber, is liquid-impermeable, and functions as a liquid-impermeable sheet. The absorber back sheet 30 is disposed so as to extend outward in the front-rear direction from the absorber 40.
吸収体裏面シート30の後側端部30Rは、吸収体40の後側端部40Rよりも後方であって、股下領域内に配置されている。また、吸収体裏面シート30の前側端部30Fは、吸収体40の前側端部40Fよりも前方であって、前胴回り領域S1内に配置されている。
The rear end 30R of the absorber back sheet 30 is arranged behind the rear end 40R of the absorber 40 and in the crotch region. Further, the front end portion 30F of the absorber back sheet 30 is located in front of the front end portion 40F of the absorber 40 and is disposed in the front waistline region S1.
なお、吸収体裏面シート30は、少なくとも吸収体40の非肌当接面側に配置されていればよく、前後方向の位置は、本実施の形態の構成に限定されない。例えば、吸収体裏面シート30の前側端部30Fが前胴回り領域内に配置され、かつ吸収体裏面シート30の後側端部30Rが後胴回り領域内に配置されていてもよいし、吸収体裏面シート30の前側端部30Fが股下領域内に配置され、かつ吸収体裏面シート30の後側端部30Rが後胴回り領域内に配置されていてもよいし、吸収体裏面シート30の前側端部30Fが股下領域内に配置され、かつ吸収体裏面シート30の後側端部30Rが股下領域内に配置されていてもよい。
In addition, the absorber back surface sheet 30 should just be arrange | positioned at least on the non-skin contact surface side of the absorber 40, and the position of the front-back direction is not limited to the structure of this Embodiment. For example, the front end 30F of the absorber backsheet 30 may be disposed in the front waistline region, and the rear end 30R of the absorber backsheet 30 may be disposed in the back waistline, or the absorber back surface The front end 30F of the sheet 30 may be disposed in the crotch region, and the rear end 30R of the absorber back sheet 30 may be disposed in the rear waistline region, or the front end of the absorber back sheet 30 30F may be arrange | positioned in a crotch area | region, and the rear side edge part 30R of the absorber back surface sheet 30 may be arrange | positioned in a crotch area | region.
防漏部は、防漏サイドシート32と、防漏弾性材33と、を有し、吸収体40の幅方向端部において前後方向に沿って配置されている。防漏サイドシート32は、吸収体40の幅方向Wの両側端において、表面シート10、吸収体裏面シート30を一体に包むように設けられる。防漏サイドシート32は、液不透過性の不織布などのシートによって形成されている。防漏サイドシート32の幅方向の一方の端部は、吸収体裏面シート30の非肌面側の面に接合されており、防漏サイドシート32の幅方向の他方の端部は、吸収体40の幅方向側部から表面シート側に折り返され、表面シート10の肌当接面側の面に接合されている。
The leak-proof part has a leak-proof side sheet 32 and a leak-proof elastic material 33, and is arranged along the front-rear direction at the width direction end of the absorber 40. The leak-proof side sheet 32 is provided so as to integrally wrap the top sheet 10 and the absorber back sheet 30 at both side ends in the width direction W of the absorber 40. The leak-proof side sheet 32 is formed of a sheet such as a liquid-impermeable nonwoven fabric. One end in the width direction of the leak-proof side sheet 32 is joined to the non-skin surface side surface of the absorber back sheet 30, and the other end in the width direction of the leak-proof side sheet 32 is the absorber. The side sheet 40 is folded back from the side in the width direction to the surface sheet side and joined to the surface of the surface sheet 10 on the skin contact surface side.
防漏サイドシート32は、ホットメルト接着剤によって表面シート等に接合されている。本実施形態では、ビード塗工によって目付0.1g/m2でホットメルト型接着剤を複数本塗布した。また、防漏サイドシート32は、疎水性の不織布シートを用いることができ、本実施形態では、ポリプロピレンの目付15g/m2のSMS不織布を用いた。
The leak-proof side sheet 32 is joined to a top sheet or the like by a hot melt adhesive. In this embodiment, a plurality of hot-melt adhesives are applied with a basis weight of 0.1 g / m 2 by bead coating. Moreover, a hydrophobic nonwoven fabric sheet can be used for the leak-proof side sheet 32. In this embodiment, an SMS nonwoven fabric of polypropylene having a basis weight of 15 g / m 2 was used.
防漏弾性材33は、吸収体裏面シート30と防漏サイドシート32と間に、伸長状態で貼りあわされている。防漏弾性材の固定手段としては、ホットメルト型接着剤を例示できる。本実施の形態は、防漏弾性材33としてスパンデックスを用い、Vスロット方式により直接塗工している。より具体的には、防漏弾性材33は、780dtexの太さ、2.3倍の伸長倍率で3本伸長固定される。
The leak-proof elastic material 33 is stuck between the absorber back sheet 30 and the leak-proof side sheet 32 in an expanded state. An example of the means for fixing the leakproof elastic material is a hot melt adhesive. In the present embodiment, spandex is used as the leak-proof elastic material 33 and coating is directly performed by the V slot method. More specifically, three leak-proof elastic members 33 are stretched and fixed at a thickness of 780 dtex and a stretching factor of 2.3 times.
前胴回り領域S1及び後胴回り領域S2には、ウエストギャザー3が設けられる。ウエストギャザー3は、吸収体40の幅方向Wに沿って伸縮するように配設される合成ゴムなどの細長いウエスト弾性材3Aを有する。ウエストギャザー3は、前胴回り領域S1における吸収性物品1の幅方向W外側に位置する一方の前胴回り縁部4から他方の前胴回り縁部4’まで連続し、後胴回り領域S2における吸収性物品1の幅方向W外側に位置する一方の後胴回り縁部6から他方の後胴回り縁部6’まで連続する。
A waist gather 3 is provided in the front waistline region S1 and the back waistline region S2. The waist gather 3 has an elongated waist elastic material 3 </ b> A such as a synthetic rubber disposed so as to expand and contract along the width direction W of the absorber 40. The waist gather 3 is continuous from one front waistline edge 4 located on the outer side in the width direction W of the absorbent article 1 in the front waistline region S1 to the other front waistline edge 4 ′, and the absorbent article in the rear waistline region S2. 1 from the rear waistline edge 6 located on the outer side in the width direction W to the other rear waistline edge 6 ′.
ウエスト弾性材3Aは、前側外装トップシート70F又は後側外装トップシート70Rと、外装バックシートに、伸長された状態で接着剤(例えばホットメルト型接着剤)によって固定されている。本実施形態では、Vスロット方式でホットメルト型接着剤が塗工されている。
The waist elastic material 3A is fixed to the front exterior topsheet 70F or the rear exterior topsheet 70R and the exterior backsheet with an adhesive (for example, a hot-melt adhesive) in a stretched state. In this embodiment, the hot-melt adhesive is applied by the V slot method.
ウエスト弾性材3Aは、スパンデックスによって構成されている。ウエスト弾性材3Aは、腰回り開口部8近傍において、940dtexの太さ、3.5倍の伸長倍率でそれぞれ6本伸長固定され、かつ当該弾性材よりも前後方向内側において、780dtexの太さ、3.0倍の伸長倍率で前後それぞれ8本伸長固定される。なお、ウエスト弾性材3Aの太さ、伸長倍率及び本数は、上記に限られず、種々設定することができる。
The waist elastic material 3A is composed of spandex. In the vicinity of the waist opening 8, the waist elastic material 3 </ b> A is stretched and fixed at a thickness of 940 dtex and a stretch ratio of 3.5 times, respectively, and the thickness of 780 dtex on the inner side in the front-rear direction than the elastic material, Eight stretches are fixed at the front and rear at an expansion ratio of 3.0. In addition, the thickness, the expansion magnification, and the number of the waist elastic material 3A are not limited to the above, and can be variously set.
このように構成された吸収性物品の製造方法としては、例えば、吸収体の第1吸収層を成形する工程と、吸収体の第2吸収層を成形する工程と、第1吸収層と第2吸収層とを合体させる工程と、ベルトコンベア等で吸収体等を搬送し、搬送する過程で表面シート等のシート材と接合する工程と、を含む方法によって吸収性物品を製造することができる。なお、その他の工程は、公知の製造方法に従って製造し得る。
As a manufacturing method of the absorbent article comprised in this way, the process of shape | molding the 1st absorption layer of an absorber, the process of shape | molding the 2nd absorption layer of an absorber, a 1st absorption layer, and 2nd, for example An absorbent article can be manufactured by a method including a step of combining the absorbent layer and a step of transporting the absorbent body or the like with a belt conveyor or the like and joining with a sheet material such as a surface sheet in the course of transport. The other steps can be manufactured according to known manufacturing methods.
また、第1吸収層と第2吸収層の両方に、中央スリットやサイドスリットを設けた場合、第1吸収層と第2吸収層とを重ね合わせるときの位置ずれが生じることがある。例えば、幅方向に位置ずれが生じると、左右に配置された一対のサイドスリットの幅が狭くなり、規則的な変形ができなくなったり、左右アンバランスな吸収体となり、吸収性や装着感に悪影響を及ぼしたりするおそれがある。しかし、第1吸収層と第2吸収層のうちいずれか一方に、中央スリットやサイドスリットを設けることにより、サイドスリット等の位置ずれを防止できる。
In addition, when a central slit or a side slit is provided in both the first absorption layer and the second absorption layer, a positional shift may occur when the first absorption layer and the second absorption layer are overlapped. For example, if a displacement occurs in the width direction, the width of the pair of side slits arranged on the left and right becomes narrow, and regular deformation becomes impossible, or the left and right unbalanced absorber becomes an adverse effect on the absorbability and wearing feeling. There is a risk of causing However, by providing a central slit or a side slit in either one of the first absorption layer and the second absorption layer, it is possible to prevent a positional shift of the side slit or the like.
なお、上述した使い捨ておむつ1を構成する各部材は、例えば、特開2006-346439号公報に記載された材料を用いてもよい。
In addition, for each member constituting the disposable diaper 1 described above, for example, a material described in JP-A-2006-346439 may be used.
(2)脚回り開口部の形状
図5は、図2に示す展開平面図における脚回り開口部の部分拡大図である。脚回り開口部9は、吸収体40よりも幅方向外側の領域において後方に向かうにつれて幅方向外側に向かう傾斜部9Cを有する。傾斜部9Cは、平面視にて曲線形状であり、外装体1Bの縁部によって構成されている。 (2) Shape of leg-hole opening FIG. 5 is a partially enlarged view of the leg-hole opening in the developed plan view shown in FIG. Theleg opening 9 has an inclined portion 9 </ b> C that goes to the outer side in the width direction as it goes rearward in the region on the outer side in the width direction than the absorber 40. The inclined portion 9C has a curved shape in plan view, and is configured by an edge portion of the exterior body 1B.
図5は、図2に示す展開平面図における脚回り開口部の部分拡大図である。脚回り開口部9は、吸収体40よりも幅方向外側の領域において後方に向かうにつれて幅方向外側に向かう傾斜部9Cを有する。傾斜部9Cは、平面視にて曲線形状であり、外装体1Bの縁部によって構成されている。 (2) Shape of leg-hole opening FIG. 5 is a partially enlarged view of the leg-hole opening in the developed plan view shown in FIG. The
外装体1Bは、平面視において吸収体と重なる領域において、吸収性本体1Aよりも幅方向内側に凹んで配置されている。当該領域においては、吸収性本体1Aの幅方向外側端部が直線状の脚回り開口部9を形成している。すなわち、脚回り開口部9は、股下領域における外装体1Bの幅方向外側端部から幅方向内側に向かう縁部である傾斜部9Cと、吸収性本体1Aの幅方向外側の縁部であって前後方向に沿った平行部9Sと、によって構成されている。
The exterior body 1B is disposed so as to be recessed inward in the width direction with respect to the absorbent main body 1A in a region overlapping the absorber in plan view. In the said area | region, the width direction outer side edge part of 1 A of absorptive main bodies forms the linear leg periphery opening part 9. As shown in FIG. That is, the leg-hole opening 9 is an inclined portion 9C that is an edge toward the inner side in the width direction from the outer end in the width direction of the exterior body 1B in the crotch region, and an outer edge in the width direction of the absorbent main body 1A. It is comprised by the parallel part 9S along the front-back direction.
図6は、実施の形態に係る使い捨ておむつの着用状態を模式的に示す背面斜視図である。脚回り開口部9は、着用者の脚回りに密着する。幅方向において脚回り開口部9の間には、吸収体40が配置されている。着用者が使い捨ておむつ1を着用した状態では、一対の脚回り開口部9がそれぞれ着用者の脚回りに沿って配置され、その間の吸収体40が、脚回り開口部によって幅方向外側に引っ張られ、着用者の股間に対向した状態が維持される。
FIG. 6 is a rear perspective view schematically showing a wearing state of the disposable diaper according to the embodiment. The leg opening 9 is in close contact with the wearer's leg. An absorber 40 is disposed between the leg opening 9 in the width direction. In a state in which the wearer wears the disposable diaper 1, the pair of leg openings 9 are arranged along the wearer's legs, and the absorbent body 40 therebetween is pulled outward in the width direction by the leg openings. The state facing the crotch of the wearer is maintained.
特に、幅方向において後胴回り領域の幅方向端部とサイドスリットの中心との中間点(例えば、第1交点P1)は、臀部側の脚回りにおいて最も着用者の身体が膨らむ部分であり、当該部分の脚回り開口部のラインに沿って吸収体が引き上げられる。
In particular, an intermediate point (for example, the first intersection P1) between the widthwise end of the rear waistline region and the center of the side slit in the widthwise direction is a portion where the wearer's body swells most around the leg on the buttock side, The absorber is pulled up along the line of the opening around the leg of the part. *
伸長状態の平面視において、後胴回り領域の幅方向端部1Wとサイドスリット46の幅方向中心46Cとの幅方向の中間点を通り、かつ前後方向に沿った中間ラインCLと、脚回り開口部9とが交わる第1交点P1は、傾斜部9C上に位置している。更に、伸長状態の平面視において、第1交点P1における脚回り開口部9の接線T1と、サイドスリットの幅方向中心46Cを通り、かつ前後方向に延びるサイド曲部ラインL2と、が交わる第2交点P2は、サイドスリット46よりも後方に位置するように構成されている。
In a plan view in the extended state, an intermediate line CL passing through the intermediate point in the width direction between the width direction end 1W of the rear waistline region and the width direction center 46C of the side slit 46, and along the front-rear direction, and a leg opening The first intersection point P1 where 9 intersects is located on the inclined portion 9C. Furthermore, in a plan view in the extended state, the second line where the tangent line T1 of the leg opening 9 at the first intersection P1 and the side curved line L2 passing through the center 46C in the width direction of the side slit and extending in the front-rear direction intersect. The intersection point P <b> 2 is configured to be located behind the side slit 46.
なお、伸長状態とは、使い捨ておむつを構成する吸収性本体1A及び外装体1B等の皺が形成されない状態まで、ウエストギャザー3及びレッグギャザー等を伸長させた状態である。
The stretched state is a state in which the waist gathers 3 and the leg gathers are stretched to a state where no wrinkles such as the absorbent main body 1A and the exterior body 1B constituting the disposable diaper are formed.
第1交点の脚回り開口部の接線T1とサイド曲部ラインL2とが交わる第2交点は、サイドスリットよりも後方に配置されているため、サイドスリット46よりも後方の領域が、脚回り開口部9によって引き上げられる。
Since the second intersection where the tangent line T1 of the leg opening at the first intersection and the side curved line L2 intersect is arranged behind the side slit, the area behind the side slit 46 is the leg opening. Pulled up by part 9.
脚回り開口部9によって引き上げられることにより、サイドスリットによる凸状の変形が第2交点P2よりも後方に伝わり難くなる。したがって、第2交点P2よりも前方は、サイドスリット46によって凸状に変形し、第2交点P2よりも後方は、サイドスリット46による変形が後方に伝達することを抑制し、フラットな状態を維持することができる。よって、第2交点よりも後方の領域を、臀部の丸みに沿って配置でき、フィット性を高めることができる。
By being pulled up by the leg opening 9, the convex deformation due to the side slits is less likely to be transmitted to the rear than the second intersection P <b> 2. Accordingly, the front side of the second intersection point P2 is deformed into a convex shape by the side slit 46, and the rear side of the second intersection point P2 is prevented from being transmitted rearward by the deformation by the side slit 46, and is kept flat. can do. Therefore, the area | region behind a 2nd intersection can be arrange | positioned along the roundness of a collar part, and fit property can be improved.
また、伸長状態の平面視において、脚回り開口部9を構成する外装体1Bと、吸収性本体1Aの防漏サイドシート32と、は、第3交点P3において交わっている。防漏サイドシート32は、吸収体の幅方向端部に沿って配置されるシート部材として機能する。第3交点P3は、前側の脚回り開口部9上における前第3交点と、後側の脚回り開口部上における後第3交点とを有する。伸長状態の平面視において、各第3交点における脚回り開口部9の接線T2と、サイド曲部ラインL2と、が交わる第4交点P4は、サイドスリット46よりも前後方向外側に位置する。第4交点P4は、前側のサイド曲部ライン上における前第4交点と、後側のサイド曲部ライン上における後第4交点とを有する。
Further, in the plan view in the extended state, the exterior body 1B constituting the leg opening 9 and the leak-proof side sheet 32 of the absorbent main body 1A intersect at the third intersection P3. The leak-proof side sheet 32 functions as a sheet member disposed along the widthwise end of the absorber. The third intersection P3 has a front third intersection on the front leg opening 9 and a rear third intersection on the rear leg opening 9. In plan view in the extended state, the fourth intersection P4 where the tangent line T2 of the leg opening 9 at each third intersection and the side curved line L2 intersect is located on the outer side in the front-rear direction than the side slit 46. The fourth intersection P4 has a front fourth intersection on the front side curve line and a rear fourth intersection on the rear side curve line.
第3交点P3は、脚回り開口部9における外装体1Bと吸収性本体1Aとの交点であり、脚回り開口部9の引き上げ力が吸収体40を有する吸収性本体に直接作用する点である。この第3交点P3の脚回り開口部9の接線T2と、サイド曲部ラインL2と、が交わる第4交点P4は、サイドスリット46よりも前後方向外側に配置されているため、サイドスリットよりも前側と後側の領域が、脚回り開口部によって引き上げられる。
The third intersection P3 is an intersection between the exterior body 1B and the absorbent main body 1A in the leg opening 9 and the lifting force of the leg opening 9 directly acts on the absorbent main body having the absorber 40. . The fourth intersection P4 at which the tangent line T2 of the leg opening 9 at the third intersection P3 and the side curved line L2 intersect is disposed on the outer side in the front-rear direction than the side slit 46. The front and rear regions are pulled up by the leg opening.
具体的には、後第4交点よりも前方は、サイドスリットによって凸状に変形し、後第4交点よりも後方は、サイドスリットによる変形が抑制され、フラットな状態が維持され易い。よって、後第4交点よりも後方の領域を、臀部の丸みに沿って配置でき、フィット性を高めることができる。また、前第4交点よりも後方は、サイドスリットによって凸状に変形し、前第4交点よりも前方は、サイドスリットによる変形が抑制され、フラットな状態が維持され易い。よって、前第4交点よりも前方の領域を、腹部の丸みに沿って配置でき、フィット性を高めることができる。
Specifically, the front of the rear fourth intersection is deformed into a convex shape by the side slit, and the rear of the rear fourth intersection is suppressed by the side slit, and a flat state is easily maintained. Therefore, the area behind the rear fourth intersection can be arranged along the roundness of the buttocks, and the fit can be improved. Further, the rear side of the front fourth intersection is deformed into a convex shape by the side slit, and the front side of the front fourth intersection is suppressed by the side slit, and a flat state is easily maintained. Therefore, the area in front of the front fourth intersection can be arranged along the abdomen roundness, and the fit can be improved.
また、脚回り開口部によってサイドスリット46よりも前後方向外側の領域を引き上げることにより、吸収体40を着用者側に引き上げ、吸収体を着用者の股間部に近づけることができる。本実施の形態のように、脚回り開口部9に沿うレッグギャザーを備えない形態においても、脚回り開口部によって吸収体を引き上げ、材料費を抑えながら吸収性能の向上を図ることができる。
Further, by pulling up the region on the outer side in the front-rear direction with respect to the side slit 46 by the leg opening, the absorber 40 can be pulled up toward the wearer, and the absorber can be brought close to the crotch of the wearer. Even in the embodiment in which the leg gathers along the leg opening 9 are not provided as in the present embodiment, the absorber can be pulled up by the leg opening and the absorption performance can be improved while suppressing the material cost.
更に、第1交点P1における脚回り開口部9の接線T1と、吸収性本体1Aとが交わる第4交点P4は、サイドスリット46の後側端部46Rと前側端部46Fのうち少なくともいずれか一方とほぼ重なるように設けることが望ましい。このような構成によれば、サイドスリット46による股下領域の変形が更に後胴回り領域側や前胴回り領域側に伝わり難くなる。
Further, the fourth intersection P4 where the tangent T1 of the leg opening 9 at the first intersection P1 and the absorbent main body 1A intersect is at least one of the rear end 46R and the front end 46F of the side slit 46. It is desirable to be provided so as to almost overlap. According to such a configuration, the deformation of the crotch region due to the side slit 46 is further difficult to be transmitted to the rear waistline region side or the front waistline region side.
なお、本実施形態における「ほぼ重なる」とは、第4交点P4と、サイドスリット46の前側端部46F又は後側端部46Rとの距離が50mm以内の状態である。本実施の形態においては、後第4交点とサイドスリットの後側端部46Rとの距離は、9mmである。
Note that “substantially overlap” in the present embodiment is a state in which the distance between the fourth intersection P4 and the front end 46F or the rear end 46R of the side slit 46 is within 50 mm. In the present embodiment, the distance between the rear fourth intersection and the rear end 46R of the side slit is 9 mm.
なお、脚回り開口部9は、平面視において曲線形状であってもよいし、平面視において直線形状であってもよいし、曲線形状と直線形状との組み合わせによって構成されていてもよい。例えば、外装体1Bの縁部が直線状であってもよいし、吸収性本体の縁部が曲線状であってもよい。
The leg opening 9 may have a curved shape in plan view, a linear shape in plan view, or a combination of a curved shape and a linear shape. For example, the edge of the exterior body 1B may be linear, or the edge of the absorbent main body may be curved.
(3)吸収体の構造
図7は、吸収体40の平面図であり、図8は、吸収体40の斜視図である。図7及び図8に示すように、吸収体40は、第1吸収層41と、第1吸収層41よりも肌当接面側に配置される第2吸収層42とを有する。第1吸収層41は、着用者の非肌当接面側に位置し、第2吸収層42は、着用者の肌当接面側に位置する。 (3) Structure of Absorber FIG. 7 is a plan view of theabsorber 40, and FIG. 8 is a perspective view of the absorber 40. As shown in FIGS. 7 and 8, the absorbent body 40 includes a first absorbent layer 41 and a second absorbent layer 42 that is disposed closer to the skin contact surface than the first absorbent layer 41. The 1st absorption layer 41 is located in a wearer's non-skin contact surface side, and the 2nd absorption layer 42 is located in a wearer's skin contact surface side.
図7は、吸収体40の平面図であり、図8は、吸収体40の斜視図である。図7及び図8に示すように、吸収体40は、第1吸収層41と、第1吸収層41よりも肌当接面側に配置される第2吸収層42とを有する。第1吸収層41は、着用者の非肌当接面側に位置し、第2吸収層42は、着用者の肌当接面側に位置する。 (3) Structure of Absorber FIG. 7 is a plan view of the
吸収体40は、股下領域S3と前胴回り領域S1とに跨がって配置されている。第1吸収層41の前後方向の長さは、第2吸収層42の前後方向の長さよりも長い。第1吸収層41は、股下領域S3と前胴回り領域S1とに跨って配置され、第2吸収層42は、股下領域S3内に配置されている。第1吸収層41の幅方向の長さは、第2吸収層42の幅方向の長さよりも長い。第1吸収層41は、第2吸収層42よりも幅方向外側に張り出している。
The absorber 40 is disposed across the crotch region S3 and the front waistline region S1. The length of the first absorbent layer 41 in the front-rear direction is longer than the length of the second absorbent layer 42 in the front-rear direction. The first absorbent layer 41 is disposed across the crotch region S3 and the front waistline region S1, and the second absorbent layer 42 is disposed in the crotch region S3. The length in the width direction of the first absorption layer 41 is longer than the length in the width direction of the second absorption layer 42. The first absorption layer 41 projects outward in the width direction from the second absorption layer 42.
第1吸収層41及び第2吸収層42は、綿状パルプと高分子吸収性ポリマー(SAP)とから構成されている。吸収体40は、例えば、パルプ100~500g/m2とSAP0~500g/m2とを混合させて形成することができる。本実施の形態に係る第1吸収層41及び第2吸収層42は、パルプ260g/m2とSAP160g/m2とを混合させて形成されている。
The 1st absorption layer 41 and the 2nd absorption layer 42 are comprised from cotton-like pulp and a polymer absorptive polymer (SAP). Absorber 40, for example, can be formed by mixing a pulp 100 ~ 500g / m 2 and SAP0 ~ 500g / m 2. The first absorbent layer 41 and the second absorbent layer 42 according to this embodiment is formed by mixing a pulp 260 g / m 2 and SAP160g / m 2.
第1吸収層41には、中央スリット45と、一対のサイドスリット46とが形成されている。中央スリット45は、前後方向Lに沿って延在する縦長の形状を有し、中央股下領域S32、前股下領域S31及び後股下領域S33に跨って形成されている。このように中央スリット45を形成することにより、吸収体の幅方向中央部分を着用者側である内方向INに凸に曲がり易くすることができる。また、吸収体の前後方向への体液等の拡散性を高め、広い範囲において体液等を拡散させて、吸収性能を向上させることができる。
In the first absorption layer 41, a central slit 45 and a pair of side slits 46 are formed. The central slit 45 has a vertically long shape extending along the front-rear direction L, and is formed across the central crotch region S32, the front crotch region S31, and the rear crotch region S33. By forming the central slit 45 in this way, the central portion in the width direction of the absorber can be easily bent convexly in the inward direction IN on the wearer side. Moreover, the diffusibility of the body fluid etc. to the front-back direction of an absorber can be improved, a body fluid etc. can be diffused in a wide range, and absorption performance can be improved.
一対のサイドスリット46は、中央スリット45よりも幅方向外側にそれぞれ形成されている。サイドスリット46は、前後方向Lに沿って延在する縦長の形状を有し、中央股下領域S32に形成されている。サイドスリット46は、外方向OUTに凸、つまり吸収体40が中央スリット45と逆の凸に曲がるように、前後方向Lに沿って吸収体40に形成されている。
The pair of side slits 46 are respectively formed on the outer side in the width direction than the central slit 45. The side slit 46 has a vertically long shape extending along the front-rear direction L, and is formed in the central crotch region S32. The side slits 46 are formed in the absorber 40 along the front-rear direction L such that the side slits 46 are convex in the outward direction OUT, that is, the absorber 40 is bent in a convex opposite to the central slit 45.
次いで、吸収体の変形態様について説明する。図9は、使い捨ておむつ1の着用状態を模式的に示す断面図(図2のX1-X’1線基準)である。図9に示すように、使い捨ておむつ1が着用されると、吸収体の股下領域S3は、着用者の股間に当てられる。着用者の脚等によって、吸収体には、幅方向外側から幅方向内側に向かって力が掛かる。幅方向外側から幅方向内側に向かって吸収体40に力が掛かると、中央スリット45とサイドスリット46とを基点として吸収体40が内方向と外方向とに変形する。使い捨ておむつ1の幅方向Wに沿った断面形状は、波状に変形し、吸収体40の股下領域S3の中央股下領域S32は、規則的に折り畳まれた状態となる。
Next, the deformation mode of the absorber will be described. FIG. 9 is a cross-sectional view (based on the line X1-X′ 1 in FIG. 2) schematically showing a wearing state of the disposable diaper 1. As shown in FIG. 9, when the disposable diaper 1 is worn, the crotch region S3 of the absorbent body is applied to the wearer's crotch. A force is applied to the absorber from the outer side in the width direction toward the inner side in the width direction by the wearer's legs and the like. When force is applied to the absorber 40 from the outer side in the width direction toward the inner side in the width direction, the absorber 40 is deformed inward and outward with the central slit 45 and the side slits 46 as base points. The cross-sectional shape along the width direction W of the disposable diaper 1 is deformed into a wave shape, and the central crotch region S32 of the crotch region S3 of the absorber 40 is regularly folded. *
このように、吸収体が折り畳まれることにより、吸収性能を確保するために吸収体の面積を大きくした場合であっても、股下領域S3の吸収体40を適切に折り畳み、吸収体40と***口とを密着させることができる。例えば、本実施の形態のように、吸収体の後側端部が股下領域内に配置され、吸収体の前後方向の長さが比較的短い形態であっても、吸収性能を高め、体液の漏れを抑制できる。
In this way, even when the absorbent body is folded, the absorbent body 40 in the crotch region S3 is appropriately folded even when the area of the absorbent body is increased in order to ensure the absorption performance, and the absorbent body 40 and the excretory opening Can be brought into close contact with each other. For example, as in the present embodiment, the rear end portion of the absorbent body is disposed in the crotch region, and even if the length of the absorbent body in the front-rear direction is relatively short, the absorption performance is improved, Leakage can be suppressed.
吸収体40は、中央スリット45によって内方向INに凸となった吸収体40の頂面が着用者の股間部に当接する。中央スリット45による凸状部分が形成される部分は、第2吸収層42のみによって構成されており、比較的厚みが薄い。一方、中央スリットによる凸状部分とサイドスリットによる凸状部分との間は、第1吸収層41と第2吸収層42とが重なっており、比較的厚みが厚く、剛性が高い。中央スリットとサイドスリットとの間の剛性が高い部分によって中央スリットによる凸状部分を支持し、着用者側に向かう凸形状の安定性を向上させることができる。
In the absorbent body 40, the top surface of the absorbent body 40, which is convex in the inward direction IN by the central slit 45, comes into contact with the crotch portion of the wearer. The portion where the convex portion by the central slit 45 is formed is constituted only by the second absorption layer 42 and is relatively thin. On the other hand, the first absorbent layer 41 and the second absorbent layer 42 are overlapped between the convex portion due to the central slit and the convex portion due to the side slit, and the thickness is relatively thick and the rigidity is high. The convex portion by the central slit is supported by the portion having high rigidity between the central slit and the side slit, and the stability of the convex shape toward the wearer can be improved.
また、着用者が両脚を閉じると、使い捨ておむつ1の断面形状は、吸収体の中央スリット及びサイドスリットを基点に折り畳まれ、互いに密着した状態で、股間部の下方においてコンパクトに配置される。よって、股間部近傍の違和感を抑制しつつ、吸収性能を確保することができる。
Further, when the wearer closes both legs, the cross-sectional shape of the disposable diaper 1 is folded around the central slit and the side slit of the absorbent body, and is placed compactly below the crotch portion in close contact with each other. Therefore, the absorption performance can be ensured while suppressing the uncomfortable feeling near the crotch part.
このとき、中央スリット45によって形成される内方向への凸状部分は、着用者の股間部と当接するように位置する。一方、サイドスリット46によって形成される外方向への凸状部分は、非肌当接面側に凸状であり、着用者の***口と当接し難い位置となる。
At this time, the inwardly convex portion formed by the central slit 45 is positioned so as to contact the wearer's crotch portion. On the other hand, the outwardly convex portion formed by the side slit 46 is convex toward the non-skin contact surface side, and is in a position where it is difficult to contact the wearer's excretion opening.
着用者の股間部において吸収体が密着しているので、肌伝いするような尿速の遅い尿が排出された場合であっても、体液の漏れを防止できる。また、折り畳まれた状態で、吸収体の肌から離れた部分の曲部においては、前後方向に延びる凹みが形成されるため、体液を前後方向外側へ拡散させることができ、横漏れを防止することができる。更に、サイド曲部は、凹部を形成するため、当該凹部に***物が入り込み易く、着用者の肌と***物が直接接触することを抑制できる。
Since the absorbent body is in close contact with the wearer's crotch, it is possible to prevent leakage of bodily fluids even when urine with a slow urine speed that is transmitted to the skin is discharged. Further, in the folded state, a dent extending in the front-rear direction is formed in the bent portion away from the skin of the absorber, so that the body fluid can be diffused outward in the front-rear direction, and side leakage is prevented. be able to. Furthermore, since the side curved portion forms a concave portion, excrement can easily enter the concave portion, and direct contact between the wearer's skin and excrement can be suppressed.
中央曲部によって形成される凸状部分は、厚みが薄くかつ高さが高い。よって、使い捨ておむつ1を着用して吸収体40が変形したときの断面形状は、非肌当接面側から肌当接面側に向かって狭くなる先細り形状である。股間部の狭い隙間に挿入され易くなり、***口と密着し易くなる。排尿口と吸収体とが密着するため、***された尿を迅速に吸収することができる。さらに、吸収体が着用者の股間部の隙間に収まり易く、違和感を与えにくい。また、着用者の股間部の肌に近い部分においては、吸収体の厚みが薄く、肌から遠い部分で厚みが厚くなるように折り畳まれるため、違和感なくフィットさせることができる。
The convex part formed by the central curved part is thin and high in height. Therefore, the cross-sectional shape when the absorbent body 40 is deformed by wearing the disposable diaper 1 is a tapered shape that becomes narrower from the non-skin contact surface side toward the skin contact surface side. It becomes easy to be inserted into a narrow gap in the crotch part, and it becomes easy to make close contact with the excretion opening. Since the urination opening and the absorbent body are in close contact with each other, the excreted urine can be absorbed quickly. Furthermore, the absorbent body easily fits in the gap between the crotch portions of the wearer, and does not give a sense of discomfort. Moreover, in the part close | similar to the skin of a wearer's crotch part, since the thickness of an absorber is thin and it folds so that thickness may become thick in a part far from skin, it can be made to fit without discomfort.
次いで、第1吸収層41と第2吸収層42の詳細な構成について説明する。第1吸収層41は、前股下領域S31から中央股下領域S32に向かって幅方向の長さが短くなり、かつ後股下領域S33から中央股下領域S32に向かって幅方向の長さが短くなっている。第1吸収層41には、前股下領域S31から中央股下領域S32に向かって幅方向内側に凹んだ凹み部41Nが形成されている。凹み部41Nは、サイドスリット46よりも前方に位置しており、変形抑制部として機能する。
Next, detailed configurations of the first absorption layer 41 and the second absorption layer 42 will be described. The first absorbent layer 41 has a length in the width direction that decreases from the front crotch region S31 toward the center crotch region S32, and a length in the width direction decreases from the back crotch region S33 toward the center crotch region S32. Yes. The first absorbent layer 41 is formed with a recessed portion 41N that is recessed inward in the width direction from the front crotch region S31 toward the center crotch region S32. The recessed portion 41N is located in front of the side slit 46 and functions as a deformation suppressing portion.
サイドスリット46よりも前方に凹み部41Nが形成されているため、サイドスリット46による変形を前胴回り領域S1に伝達し難くすることができる。よって、凹み部41Nよりも前方において、吸収体40が凸状に変形することを抑制し、吸収体40を着用者の肌に沿わせて配置することができる。
Since the recess 41N is formed in front of the side slit 46, it is possible to make it difficult to transmit the deformation caused by the side slit 46 to the front waistline region S1. Therefore, it is possible to suppress the absorber 40 from being deformed into a convex shape in front of the recessed portion 41N and arrange the absorber 40 along the wearer's skin.
第2吸収層42は、略略砂時計型の形状である。第2吸収層は、前後方向における中央部分に位置し、かつ幅方向Wにおいて所定の幅を有する幅狭部42Nと、幅狭部42Nの前側に位置し、幅狭部よりも幅が長い前幅広部42FLと、幅狭部42Nの後側に位置し、幅狭部よりも幅が長い後幅広部42RLと、を有している。幅狭部42Nの側端、前幅広部42FLの側端、及び後幅広部42RLの側端は、曲線で結ばれており、第2吸収層42は砂時計型の平面形状を有する。
The second absorbent layer 42 has a substantially hourglass shape. The second absorption layer is located in the center portion in the front-rear direction and has a narrow portion 42N having a predetermined width in the width direction W, and is located in front of the narrow portion 42N, and has a width that is longer than the narrow portion. It has a wide part 42FL and a rear wide part 42RL located on the rear side of the narrow part 42N and having a width wider than that of the narrow part. The side end of the narrow portion 42N, the side end of the front wide portion 42FL, and the side end of the rear wide portion 42RL are connected by a curve, and the second absorbent layer 42 has an hourglass planar shape.
第1吸収層41と第2吸収層42とは、厚み方向Tに沿って押圧されることによって一体化している。なお、第1吸収層41と第2吸収層42とは、接着剤や熱融着などによって一体化されていてもよい。また、吸収体40は、第1吸収層41が非肌当接面側に位置し、第2吸収層42が肌当接面側に位置しているが、第2吸収層42が非肌当接面側に位置し、第1吸収層41が肌当接面側に位置してもよい。
The first absorption layer 41 and the second absorption layer 42 are integrated by being pressed along the thickness direction T. In addition, the 1st absorption layer 41 and the 2nd absorption layer 42 may be integrated by the adhesive agent, heat sealing | fusion, etc. In the absorbent body 40, the first absorbent layer 41 is located on the non-skin contact surface side, and the second absorbent layer 42 is located on the skin contact surface side. The first absorbent layer 41 may be located on the skin contact surface side, located on the contact surface side.
幅方向において、幅狭部42Nの外側端部と、サイドスリット46の内側端部とは一致している。このような構成によれば、サイドスリット46の幅方向端部に吸収体40の剛性差が形成され、サイドスリット46を基点に安定的に吸収体を屈曲させることができる。
In the width direction, the outer end of the narrow portion 42N and the inner end of the side slit 46 coincide. According to such a configuration, a difference in rigidity of the absorber 40 is formed at the end portion in the width direction of the side slit 46, and the absorber can be bent stably with the side slit 46 as a base point.
更に、図2に示すように、幅方向において、セカンドシート15の端部は、サイドスリットよりも内側に位置している。セカンドシート15が配置された領域と、セカンドシート15が配置されていない領域(セカンドシート15の幅方向の端部よりも幅方向外側の領域)は、剛性が異なる。セカンドシートの有無による剛性差を設けることにより、サイドスリット46によって構成されるサイド曲部を基点に曲がり易くなる。
Furthermore, as shown in FIG. 2, in the width direction, the end of the second sheet 15 is located inside the side slit. The region where the second sheet 15 is disposed and the region where the second sheet 15 is not disposed (region outside the width direction end of the second sheet 15) are different in rigidity. By providing a difference in rigidity depending on the presence or absence of the second sheet, it becomes easy to bend around the side curved portion formed by the side slit 46 as a base point.
また、後幅広部42RLの幅方向端部は、サイドスリットよりも後方において、サイドスリットの幅方向内側から幅方向外側に向かって延出している。この後幅広部の幅方向端部は、変形抑制部42Pとして機能している。
Further, the end in the width direction of the rear wide portion 42RL extends from the inner side in the width direction toward the outer side in the width direction behind the side slit. The widthwise end of the rear wide portion functions as a deformation suppressing portion 42P.
変形抑制部42Pは、サイドスリットよりも後方に配置されている。変形抑制部42Pは、第2吸収層42の幅狭部42Nから後方に向かうにつれて幅方向内側から幅方向外側に向かって延びるように配置されている。変形抑制部42Pよりも前方の領域は、第1吸収層41のみが配置されているが、変形抑制部42Pよりも後方の領域は、第1吸収層41と第2吸収層が重なっており、変形抑制部で吸収体の剛性差が生じる。よって、変形抑制部42Pよりも前方における変形が、後方に伝達し難くなる。
The deformation suppressing part 42P is arranged behind the side slit. The deformation suppressing part 42P is arranged so as to extend from the inner side in the width direction toward the outer side in the width direction as it goes rearward from the narrow part 42N of the second absorption layer 42. Only the first absorption layer 41 is disposed in the region in front of the deformation suppressing portion 42P, but in the region in the rear of the deformation suppressing portion 42P, the first absorption layer 41 and the second absorption layer are overlapped, A difference in rigidity of the absorber occurs in the deformation suppressing portion. Therefore, it becomes difficult to transmit the deformation in front of the deformation suppressing portion 42P to the rear.
サイドスリットの前方と後方に、変形抑制部を設けることにより、股下領域に吸収体を変形させた状態で配置する一方、その変形を後胴回り領域及び前胴回り領域に伝わることを抑制できる。更に、吸収体の前胴回り領域S1及び後胴回り領域S2が変形した場合であっても、その変形が股下領域に伝達し難くなるため、股下領域S3において吸収体40を安定的に凸状に折り曲げることができる。
By providing the deformation suppressing portions in front and rear of the side slits, it is possible to prevent the absorber from being deformed in the crotch region and to transmit the deformation to the rear waistline region and the front waistline region. Further, even when the front waistline region S1 and the rear waistline region S2 of the absorber are deformed, the deformation is difficult to be transmitted to the crotch region, so that the absorber 40 is stably bent into a convex shape in the crotch region S3. be able to.
特に、サイドスリット46の後方に変形抑制部を設けることにより、脚回り開口部による引き上げ力と変形抑制部とによって、サイドスリットによる変形が後方に伝わることを抑制できる。
Particularly, by providing the deformation suppressing portion behind the side slit 46, it is possible to suppress the deformation due to the side slit from being transmitted rearward by the lifting force by the leg opening and the deformation suppressing portion.
変形抑制部は、サイドスリットよりも後方の領域に配置されていればよいが、より好適には、サイド曲部ライン上の少なくとも第2交点P2と重なるように配置されていることが望ましい。変形抑制部と第2交点P2とが重なるように構成することにより、脚回り開口部9による引き上げ力と変形抑制部との相乗効果によって、サイドスリットの変形を更に後方に伝わり難くできる。
The deformation suppressing portion only needs to be arranged in a region behind the side slit, but more preferably, it is arranged so as to overlap at least the second intersection point P2 on the side curved portion line. By configuring the deformation suppressing portion and the second intersection point P2 to overlap each other, it is possible to further prevent the side slit deformation from being further transmitted to the rear due to the synergistic effect of the lifting force by the leg opening 9 and the deformation suppressing portion.
また、図5に示すように、変形抑制部42Pの接線T3と、サイド曲部ラインL2との第5交点P5は、サイドスリット46よりも後方に位置し、サイドスリットの変形を第5交点P5よりも後方に伝わり難くし、第5交点P5よりも後方の領域をフラットな状態に維持し易くなる。
Further, as shown in FIG. 5, the fifth intersection P5 between the tangent line T3 of the deformation suppressing portion 42P and the side curved portion line L2 is located behind the side slit 46, and the deformation of the side slit is changed to the fifth intersection P5. This makes it difficult to transmit to the rear, and makes it easier to maintain the area behind the fifth intersection P5 in a flat state.
更に、変形抑制部42Pの接線T3と、第1交点P1における脚回り開口部9の接線T1とは、略平行であることが望ましい。この構成によれば、脚回り開口部9による引き上げ機能と、変形抑制部による変形を抑制する機能との相乗効果を高めることができる。
Furthermore, it is desirable that the tangent line T3 of the deformation suppressing portion 42P and the tangent line T1 of the leg opening 9 at the first intersection P1 are substantially parallel. According to this structure, the synergistic effect of the raising function by the leg periphery opening part 9 and the function which suppresses the deformation | transformation by a deformation | transformation suppression part can be heightened.
なお、本実施形態における「ほぼ平行」とは、変形抑制部42Pの接線と、第1交点における脚回り開口部の接線とがなす角度が、10度以内の状態である。本実施の形態においては、変形抑制部42Pの接線と第1交点における脚回り開口部の接線との角度の差は、2度である。
Note that “substantially parallel” in the present embodiment is a state where the angle formed by the tangent of the deformation suppressing portion 42P and the tangent of the leg opening at the first intersection is within 10 degrees. In the present embodiment, the difference in angle between the tangent line of the deformation suppressing portion 42P and the tangent line of the leg opening at the first intersection is 2 degrees.
サイド曲部を構成するサイドスリットの前後方向の中心は、吸収体の前後方向の中心よりも前方に配置されており、変形抑制部42Pは、股下領域内に配置されている。このように、サイドスリット46及び変形抑制部42Pを配置することにより、股下領域を変形させつつ、後胴回り領域を変形させないようにして、後胴回り領域を着用者の身体に沿って配置することができる。
The center in the front-rear direction of the side slit that constitutes the side curved portion is disposed in front of the center in the front-rear direction of the absorber, and the deformation suppressing portion 42P is disposed in the crotch region. In this way, by arranging the side slit 46 and the deformation suppressing portion 42P, the rear waistline region can be disposed along the wearer's body while the crotch region is deformed and the rear waistline region is not deformed. it can.
変形抑制部は、サイドスリットよりも幅方向内側から幅方向外側まで、サイド曲部の後方を跨がって配置されている。このような構成によれは、サイド曲部の後方においてサイド曲部による変形を抑制することができる。
The deformation suppressing portion is disposed across the rear of the side curved portion from the inner side in the width direction to the outer side in the width direction than the side slit. According to such a structure, the deformation | transformation by a side curved part can be suppressed in the back of a side curved part.
なお、変形抑制部は、種々の構成を採用することができる。具体的には、変形抑制部は、吸収体の側部が幅方向に内側に括れた括れ部、吸収体に形成されたスリット、吸収体において周囲の目付よりも低い目付である低目付領域、吸収体を厚み方向において圧搾した圧搾部、幅方向において伸縮する幅伸縮部材、及び吸収体の剛性差のうち少なくともいずれかによって構成することができる。
It should be noted that the deformation suppressing unit can employ various configurations. Specifically, the deformation suppressing portion is a constricted portion in which the side portion of the absorber is bound inward in the width direction, a slit formed in the absorber, a low weight area that is lower in weight than the surrounding weight in the absorber, It can be comprised by at least any one among the pressing part which squeezed the absorber in the thickness direction, the width expansion-contraction member which expands-contracts in the width direction, and the absorber.
(4)変形例
次に、変形例1及び変形例2に係る使い捨ておむつについて、図面を参照しながら説明する。なお、上述した実施形態に係る使い捨ておむつ1と同一部分には同一の符号を付して、相違する部分を主として説明する。 (4) Modification Next, disposable diapers according toModification 1 and Modification 2 will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part as the disposable diaper 1 which concerns on embodiment mentioned above, and a different part is mainly demonstrated.
次に、変形例1及び変形例2に係る使い捨ておむつについて、図面を参照しながら説明する。なお、上述した実施形態に係る使い捨ておむつ1と同一部分には同一の符号を付して、相違する部分を主として説明する。 (4) Modification Next, disposable diapers according to
図10は、変形例1に係る使い捨ておむつの平面図である。変形例1に係る使い捨ておむつは、吸収体40が1層のみで構成されている。吸収体40は、略長方形の平面形状である。吸収体には、中央スリット45とサイドスリット46とが形成されている。
FIG. 10 is a plan view of the disposable diaper according to the first modification. As for the disposable diaper which concerns on the modification 1, the absorber 40 is comprised only by 1 layer. The absorber 40 has a substantially rectangular planar shape. A central slit 45 and side slits 46 are formed in the absorber. *
中間ラインL1と脚回り開口部9とが交わる第1交点P1における脚回り開口部9の接線T1とサイド曲部ラインL2とは、第2交点P2において交わっている。第2交点P2は、サイドスリット46よりも後方に位置する。また、サイドスリット46よりも後方には、変形抑制部としての後圧搾部43Rが形成されている。更に、サイドスリットの前方にも、変形抑制部としての前圧搾部43Fが形成されている。前圧搾部43F及び後圧搾部43Rは、エンボス加工によって形成されている。
The tangent line T1 of the leg opening 9 and the side curved line L2 at the first intersection P1 where the intermediate line L1 and the leg opening 9 intersect each other at the second intersection P2. The second intersection point P <b> 2 is located behind the side slit 46. Further, a rear pressing portion 43R as a deformation suppressing portion is formed behind the side slit 46. Furthermore, the front pressing part 43F as a deformation | transformation suppression part is formed also in front of the side slit. The front pressing part 43F and the rear pressing part 43R are formed by embossing. *
また、外装体1Bの縁部の傾斜部9Cと、吸収性本体1Aの平行部9Sと、は、第3交点P3において交わっている。第3交点P3の傾斜部9Cの接線T2は、前圧搾部及び後圧搾部と重なるように配置されている。このように、前圧搾部及び後圧搾部が設けられているため、サイドスリット46による変形が前圧搾部及び後圧搾部を超えて前後方向外側に伝わることを効果的に抑制できる。
Further, the inclined portion 9C at the edge of the exterior body 1B and the parallel portion 9S of the absorbent main body 1A intersect at the third intersection point P3. The tangent line T2 of the inclined portion 9C at the third intersection P3 is arranged so as to overlap the front pressing portion and the rear pressing portion. Thus, since the front pressing part and the rear pressing part are provided, it can suppress effectively that the deformation | transformation by the side slit 46 is transmitted to the front-back direction outer side exceeding a front pressing part and a rear pressing part.
図11は、変形例2に係る使い捨ておむつの平面図である。図12は、図11に示すX’3-X3線に沿った使い捨ておむつの前後方向断面図である。変形例2に係る外装バックシートは、前側外装トップシート70Fに接合される前側外装バックシート80Fと、後側外装トップシート70Rに接合される後側外装バックシート80Rと、を有する。外装バックシートを前後方向に離間して配置することにより、外装バックシートを構成するシート材の面積を少なくすることができ、コストを低減することができる。
FIG. 11 is a plan view of a disposable diaper according to the second modification. 12 is a front-rear direction cross-sectional view of the disposable diaper along the line X'3-X3 shown in FIG. The exterior backsheet according to Modification 2 includes a front exterior backsheet 80F joined to the front exterior topsheet 70F, and a rear exterior backsheet 80R joined to the rear exterior topsheet 70R. By disposing the exterior backsheet so as to be separated in the front-rear direction, the area of the sheet material constituting the exterior backsheet can be reduced, and the cost can be reduced.
吸収体裏面シート30の非肌当接側には、不織布シート35が設けられている。前側外装トップシート70F及び後側外装トップシート70Rは、不織布シート35の非肌当接側に設けられている。不織布シート35が設けられていることにより、外装トップシート及び外装バックシートが前後方向に離間する形態において、吸収性本体1Aの吸収体裏面シート30がむき出しになることを防止することができる。
A non-woven fabric sheet 35 is provided on the non-skin contact side of the absorber back sheet 30. The front exterior topsheet 70F and the rear exterior topsheet 70R are provided on the non-skin contact side of the nonwoven fabric sheet 35. By providing the nonwoven fabric sheet 35, it is possible to prevent the absorbent back sheet 30 of the absorbent main body 1A from being exposed in a form in which the exterior top sheet and the exterior back sheet are separated in the front-rear direction.
前側外装トップシート70F及び前側外装バックシート80Fは、吸収体40の前側端部40F近傍において、吸収性本体1Aを構成する不織布シート35に接合されている。後側外装トップシート70R及び後側外装バックシート80Rは、吸収体40の後側端部40R近傍において、不織布シート35に接合されている。
The front exterior topsheet 70F and the front exterior backsheet 80F are joined to the nonwoven fabric sheet 35 constituting the absorbent main body 1A in the vicinity of the front end portion 40F of the absorbent body 40. The rear exterior topsheet 70R and the rear exterior backsheet 80R are joined to the nonwoven fabric sheet 35 in the vicinity of the rear end 40R of the absorber 40.
吸収体40は、第1吸収層41と第2吸収層42とを有している。前後方向において、第1吸収層41と第2吸収層42とは、同じ長さであり、幅方向において、第1吸収層41は、第2吸収層42よりも幅方向外側に延出している。第1吸収層41には、中央スリット及びサイドスリットが形成されている。
The absorber 40 has a first absorption layer 41 and a second absorption layer 42. In the front-rear direction, the first absorption layer 41 and the second absorption layer 42 have the same length, and in the width direction, the first absorption layer 41 extends outward in the width direction from the second absorption layer 42. . A central slit and a side slit are formed in the first absorption layer 41.
中間ラインL1と脚回り開口部9とは、第1交点P1において交わっている。第1交点P1における脚回り開口部9の接線T1と、サイド曲部ラインL2とは、第2交点P2において交わっている。第2交点P2は、サイドスリット46よりも後方に位置する。
The intermediate line L1 and the leg opening 9 intersect at the first intersection P1. The tangent line T1 of the leg opening 9 at the first intersection P1 and the side curved line L2 intersect at the second intersection P2. The second intersection point P <b> 2 is located behind the side slit 46.
脚回り開口部9の周囲には、レッグギャザー5が設けられる。レッグギャザー5の少なくとも一部は、脚回り開口部9に沿って配置されている。レッグギャザー5は、前胴回り領域S1に配置される前脚回り弾性材5Fと、後胴回り領域S2と股下領域S3とに跨がって配置される後脚回り弾性材5Rと、によって形成されている。
A leg gather 5 is provided around the leg opening 9. At least a part of the leg gather 5 is disposed along the leg opening 9. The leg gathers 5 are formed by a front leg elastic member 5F disposed in the front waistline region S1, and a rear leg elastic member 5R disposed across the rear waist region S2 and the crotch region S3. .
後脚回り弾性材5Rは、後胴回り領域S2から股下領域S3にかけて配置されており、後胴回り領域S2から股下領域S3に向かうにつれて幅方向内側に向かうように配置されている。前脚回り弾性材5Fは、前胴回り領域S1において、幅方向に沿って配置されている。吸収体40よりも幅方向外側の領域の前脚回り弾性材5F及び後脚回り弾性材5Rと、吸収体40と重なる領域の前脚回り弾性材5F及び後脚回り弾性材5Rとが連動し、吸収体40を着用者側に引き上げるように機能する。
The rear leg elastic member 5R is disposed from the rear waistline region S2 to the crotch region S3, and is disposed so as to go inward in the width direction from the rear waistline region S2 to the crotch region S3. The front leg-holes elastic member 5F is disposed along the width direction in the front waistline region S1. The front leg elastic member 5F and the rear leg elastic member 5R in the region on the outer side in the width direction from the absorber 40 and the front leg elastic member 5F and the rear leg elastic member 5R in the region overlapping with the absorber 40 are linked and absorbed. It functions to raise the body 40 toward the wearer.
前脚回り弾性材5Fは、前側外装トップシート70Fと外装バックシート80との間に配置され、後脚回り弾性材5Rは、後側外装トップシート70Rと外装バックシート80との間に配置されている。また、ウエスト弾性材3Aは、前側外装トップシート70F又は後側外装トップシート70Rと、前側外装バックシート80F又は後側外装バックシート80Rとの間に接合されている。
The front leg elastic member 5F is disposed between the front exterior topsheet 70F and the exterior backsheet 80, and the rear leg elastic member 5R is disposed between the rear exterior topsheet 70R and the exterior backsheet 80. Yes. The waist elastic material 3A is bonded between the front exterior topsheet 70F or the rear exterior topsheet 70R and the front exterior backsheet 80F or the rear exterior backsheet 80R.
防漏弾性材33は、レッグギャザーと平面視で略連なるように配置されている。このように防漏弾性材とレッグギャザーを配置することにより、着用者の足繰りを囲むように締め付けることができ、脚繰りのフィット性が向上し、使い捨ておむつのズレや漏れの防止する効果が得られる。
The leakproof elastic material 33 is arranged so as to be substantially continuous with the leg gathers in plan view. By arranging the leak-proof elastic material and leg gathers in this way, it can be tightened to surround the foot of the wearer, improving the fit of the leg and improving the effect of preventing the displacement and leakage of disposable diapers. can get.
(5)その他の実施形態
上述したように、本発明の実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなる。 (5) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the description and drawings constituting a part of this disclosure limit the present invention. Should not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.
上述したように、本発明の実施形態を通じて本発明の内容を開示したが、この開示の一部をなす論述及び図面は、本発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例及び運用技術が明らかとなる。 (5) Other Embodiments As described above, the contents of the present invention have been disclosed through the embodiments of the present invention. However, it is understood that the description and drawings constituting a part of this disclosure limit the present invention. Should not. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.
例えば、上述した実施形態では、パンツ型の使い捨ておむつとして説明したが、本発明は、これに限定されるものではなく、オープン型の使い捨ておむつ、失禁用パッド及び生理用ナプキンなどに適用してもよい。
For example, in the above-described embodiment, the pants-type disposable diaper has been described. However, the present invention is not limited thereto, and may be applied to an open-type disposable diaper, an incontinence pad, a sanitary napkin, and the like. Good.
オープン型の使い捨ておむつにおいては、例えば、後胴回り領域には、ファスニングテープ等の係止部材が設けられ、前胴回り領域には、係止部材が引っかかるターゲット部が設けられている。
In an open-type disposable diaper, for example, a locking member such as a fastening tape is provided in the rear waistline region, and a target portion on which the locking member is caught is provided in the front waistline region.
脚回り開口部の形状において、第3交点における傾斜部の接線とサイド曲部ラインとが交わる第4交点は、サイド曲部よりも前後方向外側に位置することが望ましい。しかし、本発明に係る吸収性物品は、第3交点における傾斜部の接線とサイド曲部ラインとが交わる第4交点が、サイド曲部よりも前後方向内側に位置していてもよい。
In the shape of the leg opening, it is desirable that the fourth intersection where the tangent of the inclined portion and the side curve line intersect at the third intersection is located on the outer side in the front-rear direction than the side curve. However, in the absorbent article according to the present invention, the fourth intersection point where the tangent to the inclined portion and the side curved line at the third intersection point may be located on the inner side in the front-rear direction than the side curved portion.
また、本発明に係る吸収性物品は、必ずしも変形抑制部が設けられていなくてもよい。変形抑制部を備える場合であっても、サイド曲部ライン上の第2交点とずれて配置されていてもよく、幅方向においてサイドスリットを跨がって配置されていなくてもよい。
Moreover, the absorbent article according to the present invention does not necessarily have to be provided with a deformation suppressing portion. Even if it is a case where a deformation | transformation suppression part is provided, it may be arrange | positioned and shifted | deviated from the 2nd intersection on a side curved part line, and does not need to be arrange | positioned ranging over the side slit in the width direction.
また、吸収性物品は、中央曲部及びサイド曲部を備えていてもよいが、少なくともサイド曲部を備えていればよく、中央曲部及びサイド曲部の両方を備えていなくてもよい。サイドスリットの前後方向の中心は、吸収体の前後方向の中心と一致していてもよいし、吸収体の前後方向の中心よりも後方に配置されていてもよい。サイド曲部は、変形制御部とつながり、前後方向内側から前後方向外側に向かって幅方向外側に向かうように湾曲した形であってもよい。
Moreover, although the absorbent article may be provided with the center music part and the side music part, it should just be provided with the side music part at least, and does not need to provide both the center music part and the side music part. The center in the front-rear direction of the side slit may coincide with the center in the front-rear direction of the absorber, or may be arranged behind the center in the front-rear direction of the absorber. The side curved portion may be connected to the deformation control unit and may be curved so as to go from the inner side in the front-rear direction toward the outer side in the front-rear direction.
更に、本実施の形態の中央曲部及びサイド曲部は、吸収体に形成されたスリットによって構成されているが、中央曲部及びサイド曲部の構成は、スリットに限られない。中央曲部及びサイド曲部は、前後方向に伸縮する弾性材によって構成されていてもよいし、吸収体を厚み方向に圧縮した圧搾部によって構成されていてもよいし、吸収体において周囲の目付よりも低く構成された低目付領域によって構成されていてもよい。更に、吸収体にスリットを形成し、かつスリットに重なるように前後方向に伸縮する弾性材を設け、スリットと弾性材とによって中央曲部及びサイド曲部を構成してもよい。
Furthermore, although the center curved part and the side curved part of this Embodiment are comprised by the slit formed in the absorber, the structure of a central curved part and a side curved part is not restricted to a slit. The central curved portion and the side curved portion may be configured by an elastic material that expands and contracts in the front-rear direction, may be configured by a compressed portion that compresses the absorbent body in the thickness direction, and the weight of the surroundings in the absorbent body You may be comprised by the low weight area comprised lower than. Furthermore, a slit may be formed in the absorber, and an elastic material that expands and contracts in the front-rear direction so as to overlap the slit may be provided, and the central curved portion and the side curved portion may be configured by the slit and the elastic material.
本実施形態では、吸収体40は、第1吸収層41と第2吸収層42との2吸収層構造であるが、本発明に係る着用物品の吸収体40は、1吸収層のみによって構成されていてもよいし、3層以上で構成されていてもよい。
In the present embodiment, the absorbent body 40 has a two-absorbent layer structure of a first absorbent layer 41 and a second absorbent layer 42. However, the absorbent body 40 of the wearing article according to the present invention is configured by only one absorbent layer. It may be composed of three or more layers.
このように、本発明は、ここでは記載していない様々な実施の形態などを含むことは勿論である。従って、本発明の技術的範囲は、上述の説明から妥当な特許請求の範囲に係る発明特定事項によってのみ定められるものである。
Thus, it goes without saying that the present invention includes various embodiments that are not described herein. Accordingly, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.
なお、日本国特許出願2012―098252号(2012年4月23日出願)の全内容が、参照により、本願明細書に組み込まれている。
Note that the entire content of Japanese Patent Application No. 2012-098252 (filed on April 23, 2012) is incorporated herein by reference.
着用者の股間部に配置される吸収体の面積を増やして吸収性能を向上させ、かつ着用者の身体に沿って吸収体を配置して、フィット性を高めることができる吸収性物品を提供できる。
It is possible to provide an absorbent article capable of improving the absorption performance by increasing the area of the absorbent body disposed in the crotch portion of the wearer and improving the fit by arranging the absorbent body along the wearer's body. .
1…使い捨ておむつ(吸収性物品)
3…ウエストギャザー
3A…ウエスト弾性材
4,4’…前胴回り縁部
5…レッグギャザー
5F…前脚回り弾性材
5R…後脚回り弾性材
6,6’…後胴回り縁部
8…腰回り開口部
9…脚回り開口部
10…表面シート
15…セカンドシート
30…吸収体裏面シート
30F…前側端部
30R…後側端部
32…防漏サイドシート
33…防漏弾性材
35…不織布シート
40…吸収体
41…第1吸収層
41N…凹み部
42…第2吸収層
42FL…前幅広部
42N…幅狭部
42RL…後幅広部
45…中央スリット
46…サイドスリット
70F…前側外装トップシート
70R…後側外装トップシート
80…外装バックシート
80F…前側外装バックシート
80R…後側外装バックシート
S1…前胴回り領域
S2…後胴回り領域
S3…股下領域
S31…前股下領域
S32…中央股下領域
S33…後股下領域 1. Disposable diapers (absorbent articles)
3 ... Waist gather 3A ... Waistelastic material 4, 4 '... Front waistline edge 5 ... Leg gather 5F ... Front leg circumference elastic material 5R ... Rear leg circumference elastic material 6, 6' ... Rear waistline edge 8 ... Waist circumference opening DESCRIPTION OF SYMBOLS 9 ... Leg circumference opening part 10 ... Surface sheet 15 ... Second sheet 30 ... Absorber back surface sheet 30F ... Front side edge part 30R ... Rear side edge part 32 ... Leakage prevention side sheet 33 ... Leakage prevention elastic material 35 ... Nonwoven fabric sheet 40 ... Absorption Body 41 ... first absorbent layer 41N ... dent 42 ... second absorbent layer 42FL ... wide front part 42N ... narrow part 42RL ... wide rear part 45 ... center slit 46 ... side slit 70F ... front exterior topsheet 70R ... rear side Exterior top sheet 80 ... Exterior backsheet 80F ... Front exterior backsheet 80R ... Rear exterior backsheet S1 ... Front waistline area S2 ... Rear waistline area S3 ... Inseam Frequency S31 ... Previous crotch region S32 ... central crotch region S33 ... rear crotch region
3…ウエストギャザー
3A…ウエスト弾性材
4,4’…前胴回り縁部
5…レッグギャザー
5F…前脚回り弾性材
5R…後脚回り弾性材
6,6’…後胴回り縁部
8…腰回り開口部
9…脚回り開口部
10…表面シート
15…セカンドシート
30…吸収体裏面シート
30F…前側端部
30R…後側端部
32…防漏サイドシート
33…防漏弾性材
35…不織布シート
40…吸収体
41…第1吸収層
41N…凹み部
42…第2吸収層
42FL…前幅広部
42N…幅狭部
42RL…後幅広部
45…中央スリット
46…サイドスリット
70F…前側外装トップシート
70R…後側外装トップシート
80…外装バックシート
80F…前側外装バックシート
80R…後側外装バックシート
S1…前胴回り領域
S2…後胴回り領域
S3…股下領域
S31…前股下領域
S32…中央股下領域
S33…後股下領域 1. Disposable diapers (absorbent articles)
3 ... Waist gather 3A ... Waist
Claims (8)
- 着用者の身体前側と身体後側とに延びる前後方向と、前記前後方向に直交する幅方向と、前記着用者に向かう内方向と、前記内方向と反対側に向かう外方向と、を有し、
前記着用者の股間部に当てられる股下領域と、前記股下領域の前方に配置される前胴回り領域と、前記股下領域の後方に配置される後胴回り領域と、を備える吸収性物品であって、
少なくとも前記股下領域に配置される吸収体を有しており、
前記股下領域には、前記吸収体よりも幅方向外側の領域において後方に向かうにつれて前記幅方向外側に向かう傾斜部を有し、前記着用者の脚回りに沿って配置される脚回り開口部が形成されており、
前記股下領域には、前記吸収体が前記外方向に凸に曲がることができるように構成された一対のサイド曲部が前記前後方向に沿って形成されており、
平面視において、前記後胴回り領域の幅方向端部と前記サイド曲部の幅方向中心との幅方向の中間点を通り、かつ前記前後方向に沿った中間ラインと、前記脚回り開口部と、が交わる第1交点は、前記傾斜部上に位置しており、
平面視において、前記第1交点における前記脚回り開口部の接線と、前記サイド曲部の幅方向中心を通り、かつ前記前後方向に延びるサイド曲部ラインと、が交わる第2交点は、前記サイド曲部よりも後方に位置することを特徴とする、吸収性物品。 A front-rear direction extending to the wearer's front side and back side, a width direction orthogonal to the front-rear direction, an inward direction toward the wearer, and an outward direction opposite to the inward direction ,
An absorbent article comprising a crotch region applied to the wearer's crotch region, a front waistline region disposed in front of the crotch region, and a rear waistline region disposed behind the crotch region,
Having an absorbent body disposed at least in the crotch region;
In the crotch region, there is a leg opening that is arranged along the circumference of the wearer's leg, and has an inclined portion that goes to the outer side in the width direction as it goes rearward in the outer region in the width direction than the absorber. Formed,
In the crotch region, a pair of side curved portions configured so that the absorber can bend in the outward direction is formed along the front-rear direction,
In plan view, an intermediate line passing through the intermediate point in the width direction between the widthwise end of the rear waistline region and the widthwise center of the side curved portion, and along the front-rear direction, the leg-hole opening, Is located on the inclined portion,
In plan view, the second intersection where the tangent of the leg opening at the first intersection and the side curve line passing through the center in the width direction of the side curve and extending in the front-rear direction intersects the side An absorptive article characterized by being located behind a curved part. - 前記吸収体の少なくとも前記幅方向端部に沿って配置されるシート部材を更に備えており、
平面視において、前記シート部材の幅方向端部と前記傾斜部とは、第3交点において交わっており、
平面視において、前記第3交点における前記傾斜部の接線と、前記サイド曲部ラインと、が交わる第4交点は、前記サイド曲部よりも前後方向外側に位置することを特徴とする、請求項1に記載の吸収性物品。 A sheet member disposed along at least the widthwise end of the absorbent body;
In plan view, the widthwise end of the sheet member and the inclined portion intersect at a third intersection point,
The fourth intersection point where the tangent of the inclined portion at the third intersection point and the side curve portion line intersect with each other in a plan view is located on the outer side in the front-rear direction than the side curve portion. 2. The absorbent article according to 1. - 前記サイド曲部よりも前後方向外側には、前記サイド曲部による前記吸収体の変形が後方に伝わることを抑制できるように変形抑制部が形成されている、請求項1又は請求項2に記載の吸収性物品。 The deformation suppression part is formed in the front-back direction outer side rather than the said side curved part so that it can suppress that the deformation | transformation of the said absorber by the said side curved part is transmitted back. Absorbent articles.
- 前記変形抑制部は、前記サイド曲部ライン上の少なくとも前記第2交点と重なるように配置されている、請求項3に記載の吸収性物品。 The absorbent article according to claim 3, wherein the deformation suppressing portion is disposed so as to overlap at least the second intersection point on the side curved portion line.
- 前記変形抑制部は、前記吸収体の側部が前記幅方向に内側に括れた括れ部、前記吸収体に形成されたスリット、前記吸収体において周囲の目付よりも低い目付である低目付領域、前記吸収体を厚み方向において圧搾した圧搾部、前記幅方向において伸縮する幅伸縮部材、及び前記吸収体の剛性差のうち少なくともいずれかによって構成される、請求項3又は請求項4に記載の吸収性物品。 The deformation suppressing portion is a constricted portion in which a side portion of the absorber is bound inward in the width direction, a slit formed in the absorber, and a low weight area that is lower in weight than the surrounding weight in the absorber. The absorption according to claim 3 or 4, comprising at least one of a compressed portion obtained by pressing the absorber in the thickness direction, a width elastic member that expands and contracts in the width direction, and a difference in rigidity of the absorber. Sex goods.
- 前記変形抑制部は、前記サイド曲部よりも前記幅方向内側から前記サイド曲部よりも前記幅方向外側まで配置され、前記前後方向外側に向かうにつれて前記幅方向外側に向かって延びている、請求項3から請求項5のいずれかに記載の吸収性物品。 The deformation suppressing portion is disposed from the inner side in the width direction to the outer side in the width direction than the side curved portion than the side curved portion, and extends toward the outer side in the width direction toward the outer side in the front-rear direction. Item 6. The absorbent article according to any one of Items 3 to 5.
- 前記サイド曲部の前記前後方向の中心は、前記吸収体の前記前後方向の中心よりも前方に配置されており、
前記変形抑制部は、前記股下領域内に配置され、前記股下領域の変形が前記後胴回り領域に伝わることを抑制するように形成されている、請求項3から請求項6のいずれかに記載の吸収性物品。 The center in the front-rear direction of the side curved portion is disposed in front of the center in the front-rear direction of the absorber,
The said deformation | transformation suppression part is arrange | positioned in the said crotch area | region, and it is formed so that the deformation | transformation of the said crotch area | region may be transmitted to the said back waistline area | region. Absorbent article. - 前記股下領域の前記幅方向中心には、前記吸収体が前記内方向に凸に曲がることができるように構成された中央曲部が形成されており、
前記サイド曲部は、前記中央曲部よりも前記幅方向外側に設けられている、請求項1から請求項7のいずれかに記載の吸収性物品。 At the center in the width direction of the crotch region is formed a central curved portion configured so that the absorber can bend in the inward direction,
The absorbent article according to any one of claims 1 to 7, wherein the side curved portion is provided on the outer side in the width direction than the central curved portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012098252A JP5919082B2 (en) | 2012-04-23 | 2012-04-23 | Absorbent articles |
JP2012-098252 | 2012-04-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013161716A1 true WO2013161716A1 (en) | 2013-10-31 |
Family
ID=49483035
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/061661 WO2013161716A1 (en) | 2012-04-23 | 2013-04-19 | Absorbent article |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP5919082B2 (en) |
WO (1) | WO2013161716A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5980262B2 (en) * | 2014-04-02 | 2016-08-31 | ユニ・チャーム株式会社 | Disposable diapers |
JP6872946B2 (en) * | 2017-03-28 | 2021-05-19 | 大王製紙株式会社 | Absorbent article |
JP7305852B1 (en) | 2022-07-15 | 2023-07-10 | ユニ・チャーム株式会社 | Pants-type absorbent article |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011136094A (en) * | 2009-12-28 | 2011-07-14 | Unicharm Corp | Absorptive article |
JP2011177309A (en) * | 2010-02-27 | 2011-09-15 | Unicharm Corp | Disposable wearing article |
-
2012
- 2012-04-23 JP JP2012098252A patent/JP5919082B2/en active Active
-
2013
- 2013-04-19 WO PCT/JP2013/061661 patent/WO2013161716A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011136094A (en) * | 2009-12-28 | 2011-07-14 | Unicharm Corp | Absorptive article |
JP2011177309A (en) * | 2010-02-27 | 2011-09-15 | Unicharm Corp | Disposable wearing article |
Also Published As
Publication number | Publication date |
---|---|
JP2013223689A (en) | 2013-10-31 |
JP5919082B2 (en) | 2016-05-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5351617B2 (en) | Absorbent article and method for manufacturing absorbent article | |
JP5897829B2 (en) | Disposable wearing items | |
JP5945446B2 (en) | Absorbent articles | |
JP5945423B2 (en) | Disposable wearing items | |
US8956338B2 (en) | Wearing article with waist belt member | |
EP2026728B1 (en) | Disposable pull-on garment | |
WO2011105412A1 (en) | Disposable wearing article | |
JP5947610B2 (en) | Absorbent articles | |
JP5848069B2 (en) | Disposable wearing items | |
KR20120092610A (en) | Wearing article | |
JP5848068B2 (en) | Disposable wearing items | |
TWI663967B (en) | Absorbent article | |
KR101600656B1 (en) | Pant-type disposable wearing article | |
WO2014087969A1 (en) | Absorbent article | |
JP5777271B2 (en) | Wearing article | |
JP2014000217A (en) | Absorbent article and method for manufacturing absorbent article | |
CN107847376B (en) | Absorbent article | |
JP2008161207A (en) | Disposable pants-type wearing article | |
JP5919082B2 (en) | Absorbent articles | |
JP6255203B2 (en) | Absorbent articles | |
JP2011177427A (en) | Diaper | |
JP3699610B2 (en) | Disposable absorbent article | |
JP6181818B1 (en) | Absorbent articles | |
WO2019220934A1 (en) | Panty-type absorbent article | |
JP2014188109A (en) | Shorts type disposable diaper |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13782159 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 13782159 Country of ref document: EP Kind code of ref document: A1 |