Disposable wearable article

Abstract

To provide a disposable wearable article capable of easily fastening a fastener part along a body shape and capable of restraining a fastening force from being decreased by repeated fastening.SOLUTION: A disposable wearable article 10 includes an absorbent core 21 that extends to a rear waist region 12 from a front waist region 11, and a target region T to which a pair of fastener parts 40 are fastened. In a state in which a skin facing surface of the front waist region 11 and a skin facing surface of the rear waist region 12 are folded in two along a transversal centerline Q so as to face each other, the absorbent core 21 is positioned on the inside in a lengthwise direction Y with respect to a centerline K1 in the lengthwise direction Y of the fastener part 40.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to disposable wearing articles such as diapers for adults or babies. [Background technology]

[0002] Conventionally, so-called open-type disposable wearing articles have been known, which have longitudinal and lateral directions and include a front waist region, a rear waist region, a crotch region, an absorbent core extending from the crotch region to the front and rear waist regions, and fasteners located on both sides of the rear waist region. For example, Patent Document 1 discloses an open-type disposable wearing article which includes fasteners extending laterally outward from both side edges of the rear waist region and which is fastened to the outer surface of the front waist region so that the article is worn on the body of a wearer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 7-308343 Summary of the Invention [Problem to be solved by the invention]

[0004] In the disposable wearing article disclosed in Patent Document 1, the fasteners improve the fit of the front and rear waist regions to the body, thereby preventing leakage of body waste.

[0005] However, in the wearing article disclosed in Patent Document 1, the absorbent core is positioned symmetrically about a transverse center line that bisects the vertical dimension, and the distance between the rear end edge of the absorbent core and the waist opening edge of the rear waist region is relatively small, so when worn, the fastener portion and the absorbent core overlap each other in the thickness direction.

[0006] In conventional open-type diapers, including the wearing article disclosed in Patent Document 1, the overlapping area between the fastener and the absorbent core has a longitudinal dimension that is 50% or more of the longitudinal dimension of the fastener. Because the fastener is formed from a non-breathable plastic film or a laminated fibrous nonwoven fabric, the relatively large overlapping area prevents evaporation of bodily fluids absorbed in the absorbent core, causing stuffiness inside the wearing article in the front waist region.

[0007] Furthermore, since the absorbent core is relatively rigid, it is difficult for it to conform to the shape of the wearer's body, and when the fastener portion is fastened onto the absorbent core, the fastener portion cannot be fastened in a state that conforms to the shape of the body, which can result in wrinkles in the fastener portion itself and a decrease in fastening strength.

[0008] Furthermore, since the fastener portion has a relatively strong fastening force, it is difficult to remove if the fastening position needs to be fine-tuned again to fit the body shape after fastening, and there is a risk that the fastening force will decrease if the fastening is repeated many times.

[0009] Furthermore, in countries overseas where Islam is widely spread, such as Indonesia, it is customary to remove the fasteners of worn articles each time prayers are held, which are held several times a day. This means that the fastening force of the articles is likely to be further reduced due to the effect of the rigidity of the absorbent core.

[0010] The object of the present invention is to provide a disposable wearing article which is an improvement over conventional wearing articles, and which has a fastener portion which can be easily fastened so as to conform to the body shape and which can prevent a decrease in fastening strength due to repeated fastening. [Means for solving the problem]

[0011] In order to solve the above problems, the present invention relates to an open-type disposable wearing article having longitudinal and lateral dimensions, a thickness direction, a transverse centerline dividing the longitudinal dimension in half, a skin-facing surface and a non-skin-facing surface located on the opposite side thereof, and including a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, and a pair of fasteners attached to both sides of the rear waist region for releasably fastening the front waist region to the rear waist region.

[0012] The disposable wearing article according to the present invention is characterized in that, when the disposable wearing article is folded in half along the transverse center line so that the skin-facing surface of the front waist region and the skin-facing surface of the rear waist region face each other, the absorbent core is located inside the longitudinal center line of the fastener portion.

[0013] The disposable wearing article according to the present invention may include at least the following embodiments, which may be adopted separately or in combination with each other.

[0014] In embodiment 1, the target area includes a target tape located on the outer surface of the front waist area, and the absorbent core is located more inward in the longitudinal direction than 1 / 3 of the longitudinal dimension of the target tape.

[0015] In the disposable wearing article of aspect 1, when the fastener portion has upper and lower fastener portions, the upper fastener portion can be fastened to a portion where there is no absorbent core by crossing the lower fastener portion over the upper fastener portion, and since the upper fastener portion is spaced a given distance from the absorbent core in the longitudinal direction Y, it is possible to prevent the absorbent core from causing wrinkles in the overlapping upper and lower fastener portions themselves, which would reduce the fastening force.

[0016] In a second aspect, the distance in the longitudinal direction between the front edge of the absorbent core and the outer edge of the target area is greater than the dimension in the longitudinal direction of the fastener portion.

[0017] In the disposable wearing article of aspect 2, the fastener portion can be fastened to the target area without overlapping or slightly overlapping the absorbent core, which prevents the fastening force from decreasing due to deformation of the fastener portion or repeated fastening out of the target area due to the rigidity of the absorbent core when the article is worn.

[0018] In aspect 3, the fastener portion has upper and lower fastener portions aligned in the vertical direction, the upper fastener portion being spaced apart from the absorbent core in the vertical direction, and the lower fastener portion overlapping the absorbent core in the thickness direction.

[0019] In the disposable wearable article of aspect 3, the upper fastener portion does not overlap the absorbent core, so there is no risk of the upper fastener portion itself wrinkling and reducing its fastening strength. Furthermore, because the lower fastener portion overlaps the absorbent core, the front end of the absorbent core is pressed against the body, preventing it from protruding forward.

[0020] In a fourth aspect, the front edge of the absorbent core has a curved shape.

[0021] In the disposable wearing article of the fourth aspect, the front edge of the absorbent core has a curved shape, which allows the article to easily deform along the shape of the wearer's body.

[0022] In a fifth aspect, the portions of the absorbent core located outward in the longitudinal direction include regions having different stiffnesses in the longitudinal direction.

[0023] In the disposable wearing article of aspect 5, the outer portions of the absorbent core in the longitudinal direction have regions with different stiffnesses in the longitudinal direction, which can prevent a sudden change in stiffness from the region of the absorbent core with the highest stiffness, thereby preventing horizontal wrinkles in the diaper body and twisting or creases in the fastener portion due to a sudden difference in stiffness, and also reducing discomfort felt by the wearer when wearing the diaper.

[0024] In a sixth aspect, there are two or more boundaries between the regions having different rigidities.

[0025] In the disposable wearing article of aspect 6, the longitudinally outer portions of the absorbent core have multiple rigidity boundaries, and the rigidity gradually decreases toward the longitudinally outer portions, thereby preventing a sudden change in rigidity from the region where the absorbent core has the highest rigidity. This prevents a sudden difference in rigidity from causing horizontal wrinkles in the diaper body and causing twisting or creases in the fastener portion, and also reduces discomfort felt by the wearer when wearing the diaper.

[0026] In a seventh aspect, the target area has a plurality of decorative portions arranged in the horizontal direction.

[0027] In the disposable wearing article of aspect 7, the decorative portion is visible from the outside, and thus serves as a marker indicating the fastening position of the fastener portion when the diaper is worn, allowing the wearer to easily visually determine the appropriate fastening position according to the wearer's waist size. This eliminates the need to adjust the fastening position of the fastener portion 40 according to the wearer's size every time the diaper is changed, thereby improving the speed of diaper changing.

[0028] Aspect 8 has a leak-barrier sheet positioned on the non-skin-facing side of the absorbent core, and the decorative part is positioned on the leak-barrier sheet and is visible to the outside through the target area.

[0029] In the disposable wearing article of the eighth aspect, in such a case, a decorative portion can be formed even when no target tape is present in the target area.

[0030] In a ninth aspect, the front end portion of the absorbent core has a smaller mass per unit area than the remaining portion of the absorbent core.

[0031] In the disposable wearing article of the ninth aspect, even when the fastener portion overlaps the front end portion of the absorbent core, the fastener portion can be fastened together with the absorbent core in a manner that conforms to the body.

[0032] In a tenth aspect, the target tape is breathable.

[0033] In the disposable wearing article of aspect 10, the wearing article can be prevented from becoming stuffy in the area where the target tape is present. If the inner sheet contains a fragrance, the scent of the fragrance is diffused to the outside through the target tape, thereby further enhancing the fragrance's effect of masking bodily exudates.

[0034] In an eleventh aspect, the absorbent further comprises a hydrophilic or liquid-permeable inner sheet located on the skin-facing side of the absorbent core, and the inner sheet is coated with a fragrance.

[0035] The disposable diaper of aspect 11 is expected to have a masking effect on the odor of excrement. [Effects of the Invention]

[0036] When the disposable wearing article according to the present invention is folded in half along the transverse centerline so that the skin-facing surfaces of the front waist region and the rear waist region face each other, the absorbent core is positioned longitudinally inward of the longitudinal centerline of the fastener portion, thereby preventing the rigidity of the absorbent core from reducing fastening strength due to deformation of the fastener portion or repeated fastening that occurs when the fastener portion moves out of the target region. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a perspective view of an open-type disposable diaper according to a first embodiment of the present invention in a worn state. [Figure 2] 3 is a development view of the diaper with each elastic body stretched in the longitudinal and lateral directions of the diaper. FIG. [Figure 3] FIG. [Figure 4] 4 is a cross-sectional view taken along line IV-IV in FIG. 2. [Figure 5] This figure shows the state in which the waistband is folded in half along the transverse center line so that the skin-facing surfaces of the front waist region and the rear waist region face each other, and the side panels are folded inward laterally, and the upper and lower fastener portions are fastened to the target areas. [Figure 6] FIG. 10 is a simplified diagram showing an aspect in which the upper and lower fastener portions are fastened to the target area. [Figure 7] FIG. 7 is a view similar to FIG. 6 showing an example of a fastening mode of the upper and lower fastener portions. [Figure 8] FIG. 8 is a cross-sectional view taken along line VIII-VIII in FIG. 2. [Figure 9] FIG. 7 is a view similar to FIG. 6 showing an example of a diaper according to another embodiment. [Figure 10] FIG. 6 is a view similar to FIG. 5 of a diaper according to a second embodiment. [Figure 11] FIG. 10 is a view showing the outer surface of the front waist region of a diaper according to a third embodiment. [Figure 12] FIG. 10 is a view showing the inner side of the front waist region of the diaper according to the fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0038] The following embodiment relates to an open-type disposable wearing article shown in Figures 1 to 12, which is an example of the present invention, and includes not only essential features of the invention but also optional and preferred features. In Figure 2, each elastic body, which will be described later, is stretched against its contractile force to such an extent that gathers formed in the member to which each elastic body is attached appear to have substantially disappeared to the naked eye. For ease of explanation, in Figures 6, 7, and 9, the absorbent core 21 and upper and lower fastener portions 41 and 42 are colored light black.

[0039] First Embodiment 1 to 4, an open-type disposable diaper 10 shown as an example of a disposable wearing article of the present invention has a longitudinal direction Y, a transverse direction X, and a thickness direction Z perpendicular to the longitudinal direction Y, a longitudinal axis P extending along the longitudinal direction Y and dividing the dimension of the diaper 10 in the transverse direction X into two equal parts, and a transverse center line Q extending along the transverse direction X and dividing the dimension of the diaper 10 in the longitudinal direction Y into two equal parts, and is formed approximately symmetrically with respect to the longitudinal axis P.

[0040] The diaper 10 has a skin-contacting surface and an opposing non-skin-contacting surface, a front waist region 11, a rear waist region 12, and a crotch region 13 located between the front and rear waist regions 11, 12. The diaper 10 has a diaper body 14 forming a base, a pair of side panels 15 provided on both sides of the rear waist region 12 of the diaper body 14, and fasteners 40 attached to each of the side panels 15.

[0041] The fastener portion 40 has an upper fastener portion 41 and a lower fastener portion 42 attached to the side panel 15 at a distance from each other in the longitudinal direction Y.

[0042] When the diaper 10 is worn, the fastener portion 40 is fastened to a target area T located on the outer surface of the front waist region 11, thereby defining a waist opening 5 and a pair of leg openings 6.

[0043] The diaper body 14 has a front edge 14a and a rear edge 14b extending in the transverse direction X and spaced apart from each other in the longitudinal direction Y, and side edges 14c, 14d extending in the longitudinal direction Y and spaced apart from each other in the transverse direction X, and the side edges defining the crotch region 13 have a concave curve.

[0044] The diaper body 14 includes a liquid-permeable inner sheet 17 located on the skin-contacting side, a liquid-impermeable outer sheet 18 located on the non-skin-contacting side, an absorbent body 20 located between the inner and outer sheets 17, 18, and a liquid-impermeable or liquid-impermeable leak-proof sheet 19 located between the absorbent body 20 and the outer sheet 18. A pair of barrier cuff sheets 30 are arranged on the skin-contacting side of the inner sheet 17, spaced apart in the lateral direction X and extending in the longitudinal direction Y.

[0045] The inner sheet 17 is made of a hydrophilic or liquid-permeable fibrous nonwoven fabric, and covers the entire skin contact surface of the absorbent body 20. The inner sheet 17 has a mass of, for example, about 15 to 35 g / m 2 Various known fibrous nonwoven fabrics such as hydrophilic spunbonded fibrous nonwoven fabrics, point-bonded fibrous nonwoven fabrics, and air-through nonwoven fabrics can be used.

[0046] In addition, a fragrance that is expected to have a masking effect on the odor of excrement is applied to the inner sheet 17. Either natural or synthetic fragrances may be used as the fragrance, but examples that can be used without limitation include daun siri, magus incense, benzoin, beaver incense, spirit cat incense, clove oil, galbanum, jasmine absolute, melilot, mimosa, musk tonkin, and rosemary oil, which are particularly popular in Southeast Asia such as Indonesia.

[0047] The flavoring may be applied to the inner sheet 17 in a solid coating, or in any of various known coating patterns such as a stripe pattern or a dot pattern. Other known coating methods include spraying, roller coating, brush coating, and dipping the base sheet.

[0048] The outer sheet 18 forms the outer shape of the diaper body 14 and is made of a liquid-impermeable fibrous nonwoven fabric, a plastic film, or a laminate sheet thereof. When the outer sheet 18 is made of a fibrous nonwoven fabric, it has a mass of, for example, about 10 to 30 g / m. 2 Spunbond-meltblown-spunbond (SMS) fiber nonwoven fabric or spunbond fiber nonwoven fabric can be used.

[0049] The absorbent body 20 has front and rear edge portions extending in the transverse direction X and both side edge portions extending in the longitudinal direction Y, and includes a liquid-absorbent core (core material) 21 and a liquid-dispersive core wrap sheet 22 such as tissue paper that covers the absorbent core 21.

[0050] Wood fluff pulp, superabsorbent polymer particles, or a mixture thereof can be used for the absorbent core 21. The absorbent core 21 and the core wrap sheet 22 can be joined to each other using a known joining means such as a hot melt adhesive (not shown).

[0051] 2, the absorbent core 21 is positioned offset toward the rear waist region 12 with respect to the transverse centerline Q of the diaper. That is, the distance L2 between the rear end edge 21b of the absorbent core 21 and the transverse centerline Q in the longitudinal direction Y is larger than the distance L1 between the front end edge 21a of the absorbent core 21 and the transverse centerline Q in the longitudinal direction Y. As a result, the absorbent core 21 is positioned relatively farther away from the front waist opening edge of the front waist region 11, and the distance therebetween is relatively larger, compared to when the absorbent core 21 has dimensions in the longitudinal direction Y that are symmetrical with respect to the transverse centerline Q.

[0052] Although not shown, front and rear waist elastics made of a plurality of string- or strand-like elastics attached in a stretchable and contractible state in the transverse direction X may be disposed between the front and rear waist opening edges of the front and rear waist regions 11, 12 (front and rear end edges 14a, 14b of the diaper main body 14) and the front and rear end edges of the absorbent body 20 in the longitudinal direction Y. The front and rear waist elastics may be made of elastically stretchable fibrous nonwoven fabric sheets containing elastomeric fibers.

[0053] The leak-barrier sheet 19 covers the entire non-skin-contacting surface of the absorbent body 20, and can be bonded between the core wrap sheet 22 of the absorbent body 20 and the outer sheet 18 by a known bonding means such as a hot melt adhesive (not shown). The leak-barrier sheet 19 can be made of a liquid-resistant, preferably liquid-impermeable and breathable, plastic film, and can prevent body fluids absorbed by the absorbent body 20 from leaking to the outside of the diaper 10.

[0054] Leg elastics 32 are attached to the skin-contacting surface of the outer sheet 18, outside the absorbent body 20 in the lateral direction X. The leg elastics 32 are joined between the outer sheet 18 and the leak-barrier sheet 19 by a known joining means such as a hot melt adhesive (not shown). The leg elastics 32 extend in the longitudinal direction Y from the crotch region 13 to the front and rear waist regions 11, 12.

[0055] The leg elastics 32 may be a plurality of string- or strand-shaped elastic bodies attached in a stretched and contractible state in the longitudinal direction Y, or an elastically stretchable fibrous nonwoven fabric sheet containing elastomeric fibers. The leg elastics 32 form elastic side flaps with gasket function in both outer regions of the absorbent body 20 in the lateral direction X.

[0056] The barrier cuff sheet 30 has a mass of, for example, about 10 to 30 g / m 2 The barrier cuff sheet 30 has a front fastening portion and a rear fastening portion fixed to the skin-contacting surface of the inner sheet 17 and spaced apart from each other in the longitudinal direction Y, a fixed side portion (proximal portion) extending in the longitudinal direction Y, and a sleeve-shaped free side edge portion (distal edge portion) located inward from the fixed side portion in the transverse direction X.

[0057] Within the free side edge, cuff elastics 34 made of string- or strand-like elastic members extending in the longitudinal direction Y are attached so as to be contractible in a stretched state. When worn, contraction of the cuff elastics 34 separates the free side edge from the inner sheet 17 towards the wearer's body, forming a pair of leakage-proof cuffs to prevent lateral leakage of bodily fluids.

[0058] The side panel 15 can be formed from a laminate sheet made by laminating one or more sheets, and the material for this can be, for example, a fibrous nonwoven fabric or a liquid-impermeable and breathable plastic film.

[0059] The upper and lower fastener portions 41, 42 each have a fixed portion fixed to the side panel 15 via a hot melt adhesive and a free portion extending outward in the lateral direction X from the fixed portion, and include a tab sheet 45 that forms the fixed portion and the free portion, and a plurality of hook elements 46 that form mechanical fastener means located in the free portion of the tab sheet 45. The hook elements 46 are attached to the tab sheet 45 via a base sheet made of plastic or nonwoven fabric that is fixed to the tab sheet 45.

[0060] The tab sheet 45 has a mass of, for example, about 40 to 60 g / m 2 Spunbond fiber nonwoven fabric, SMS fiber nonwoven fabric, or a laminate sheet thereof can be used.

[0061] In the illustrated example, the fastener portion 40 is fixed to the side panel 15, but it may also be fixed directly to both sides of the diaper main body 14. The fastener portion 40 may also be made up of two or more fastener portions. Furthermore, the fastener portion 40 may have a relatively large length and be arranged in a folded state when not in use.

[0062] A target tape 50 extending in the lateral direction X is disposed on the outer surface (non-skin-facing surface) of the front waist region 11. The target tape 50 is rectangular and has inner and outer edges 50a, 50b extending in the lateral direction X and side edges 50c, 50d extending between them in the longitudinal direction. The target tape 50 is formed from a sheet material having relatively high rigidity, and can be formed from, for example, a fibrous nonwoven fabric or a plastic film.

[0063] A plurality of loop elements 55 are arranged on the outer surface of the target tape 50 to which the plurality of hook elements 46 of the fastener portion 40 are releasably fastened. As shown in the illustrated example, the fastener portion 40 and the target tape 50 may be fastened by a mechanical fastener means, or the fastener portion 40 may be coated with an adhesive and fastened to the target tape 50 having a smooth surface.

[0064] The target tape 50 is preferably breathable. By making the target tape 50 breathable, the breathability within the front waist region 11 can be improved, and internal leakage can be suppressed.

[0065] 6, the front waist region 11 has a target zone T in which a target tape 50 is arranged. The target zone T has an upper target zone (target zone) T1 located in the longitudinal direction Y between the front edge 21a of the absorbent core 21 (the portion 21e located most outward in the longitudinal direction Y) and the outer edge 50b of the target tape 50, and a lower target zone T2 located below the upper target zone T1 and between the inner edge 50a of the target tape 50 and the front edge 21a of the absorbent core 21 (the portion 21e located most outward in the longitudinal direction Y).

[0066] In a state where the waist garment is folded in half along the transverse centerline Q so that the skin-facing surface of the front waist region 11 and the skin-facing surface of the rear waist region 12 face each other, the upper and lower fastener portions 41, 42 are releasably fastened to the loop elements 55 of the target tape 50. Specifically, the upper and lower fastener portions 41, 42 are fastened to the upper target region T1 of the target tape 50.

[0067] That is, the upper and lower fastener portions 41, 42 are positioned apart from the absorbent core 21 in the longitudinal direction Y and are fastened to the target tape 50 without overlapping each other. In this case, the fastener tabs 43 formed from a non-breathable plastic film or a laminated fibrous nonwoven fabric or the like prevent evaporation of bodily fluids absorbed in the absorbent core 21, thereby preventing the inside of the diaper 10 from becoming stuffy on the front waist region 11 side.

[0068] Furthermore, because the absorbent core 21 has a relatively high rigidity, it does not easily conform to the shape of the wearer's body, and when the upper and lower fastener portions 41, 42 are fastened onto the absorbent core 21, the upper and lower fastener portions 41, 42 cannot be fastened in a state that conforms to the shape of the body. As a result, wrinkles may form in the upper and lower fastener portions 41, 42 themselves, which may reduce the fastening force. In this embodiment, the upper and lower fastener portions 41, 42 are fastened to the target region T without overlapping with the absorbent core 21, thereby preventing such a reduction in fastening force.

[0069] In the target tape 50, the dimension L3 in the vertical direction Y of the upper target region T1 is larger than the dimension L4 in the vertical direction Y of the upper and lower fastener portions 41, 42. This allows the upper and lower fastener portions 41, 42 to be securely fastened in their entirety to the upper target region T1 without overlapping with the absorbent core 21.

[0070] The "dimension L3 in the longitudinal direction Y of the upper target zone T1" can be said to mean the distance in the longitudinal direction Y between the front end edge 21a of the absorbent core 21 and the outer end edge 50b of the target zone T.

[0071] Furthermore, "the dimension L4 in the vertical direction Y of the upper and lower fastener portions 41, 42" refers to the dimension in the vertical direction Y between the upper edge 41a of the upper fastener portion 41 and the lower edge 42b of the lower fastener portion 42. The hook element 46 is attached to the tab sheet 45 via the base sheet, but since the dimensions in the vertical direction Y of the tab sheet 45 and the base sheet to which the hook element 46 is fixed are approximately the same, the dimension L4 in the vertical direction Y of the upper and lower fastener portions 41, 42 refers to the vertical dimension of the fastening region in which the hook element 46 is arranged. Note that when there is a single fastener portion 40, it refers to the dimension in the vertical direction Y between the upper and lower edges of the fastener portion 40.

[0072] In this embodiment, the front edge 21a of the absorbent body 21 is curved. If the front edge 21a of the absorbent core 21 were straight, sharp corners would be formed between the straight side edges, making it difficult to conform to the rounded shape of the body. However, the curved front edge 21a makes it easier to deform to conform to the shape of the body. Therefore, even when the lower fastener portion 42 overlaps the front edge of the absorbent core 21, the lower fastener portion 42 will conform to the shape of the body together with the absorbent core 21, making it less likely to wrinkle and eliminating the risk of a decrease in fastening force.

[0073] In the target area T, a front end edge 21a of the absorbent core 21 and a front end edge 22a of the core wrap sheet 22, which extend in the transverse direction X and are spaced apart from each other in the longitudinal direction Y, are located.

[0074] In the target region T, the number of stacked components (sheets) gradually decreases toward the outside in the longitudinal direction Y, and the rigidity gradually decreases. That is, since the number of stacked components (sheets) in the thickness direction Z changes at the front edge 21a of the absorbent core 21 and the front edge 22a of the core wrap sheet 22, it can be said that a rigidity boundary is formed extending in the transverse direction X along these front edges 21a, 22a.

[0075] Specifically, the correlation of stiffness in the target area T is as follows: first portion 51 located between the inner edge 50a of the target tape 50 and the front edge 21a of the absorbent core 21 (the portion 21e located most outward in the longitudinal direction Y)>second portion 52 located between the front edge 21a of the absorbent core 21 (the portion 21e located most outward in the longitudinal direction Y) and the front edge 22a of the core wrap sheet 22 (the portion 21e located most outward in the longitudinal direction Y)>third portion 53 located between the front edge 22a of the core wrap sheet 22 (the portion 21e located most outward in the longitudinal direction Y) and the outer edge 50b of the target tape 50.

[0076] As described above, the target region T has regions with different rigidities in the longitudinal direction Y, and has multiple rigidity boundaries, with the rigidity gradually decreasing outward in the longitudinal direction Y, thereby preventing a sudden change in rigidity from occurring in the region where the most rigid absorbent core 21 is located. This prevents a sudden difference in rigidity from causing horizontal wrinkles in the diaper body 14 and twisting or wrinkling of the upper and lower fastener portions 41, 42, and also reduces discomfort felt by the wearer when wearing the diaper.

[0077] 7 shows an example of another usage mode of the upper and lower fastener portions 41, 42, in which the lower fastener portion 42 is fastened in a state in which it is overlapped on the tab sheet 45 of the upper fastener portion 41. In particular, in diapers for adults, the fastening force may be further strengthened by pulling the lower fastener portion 42 upward in this manner, and fastening the upper and lower fastener portions 41, 42 to the target zone T in a state in which the upper and lower fastener portions 41, 42 overlap and cross each other.

[0078] In such a fastening mode, it is necessary for the upper fastener portion 41 to be firmly fastened to the target area T without being affected by the rigidity of the absorbent core 21, so it is preferable that the absorbent core 21 be positioned more inward in the longitudinal direction Y than 1 / 3 of the longitudinal dimension L5 of the target tape 50.

[0079] In such a case, as shown in the figure, the upper fastener portion 41 can be fastened to a portion where the absorbent core 21 is not present, with the lower fastener portion 42 crossed over the upper fastener portion 41, and since the upper fastener portion 41 is spaced a given distance from the absorbent core 21 in the vertical direction Y, the influence of the absorbent core 21 can be prevented from causing wrinkles in the upper and lower fastener portions 41, 42 that are stacked on top of each other, thereby preventing a decrease in the fastening force.

[0080] As described above, the inner sheet 17 of the diaper body 14 is coated with a fragrance such as Down Siri, and the target tape 50 is breathable. The target tape 50 only slightly overlaps the absorbent core 21, and the breathability of the target tape 50 is not obstructed for the most part by the absorbent core 21. Therefore, the scent of the fragrance on the inner sheet 17 is diffused to the outside via the target tape 50, and the fragrance can more effectively mask bodily exudates than when the target tape 50 is non-breathable and / or when most of the target tape overlaps the absorbent core 21.

[0081] Referring to FIG. 8, the front end 25 of the absorbent core 21 has a smaller mass per unit area than the remaining portion of the absorbent core 21.

[0082] Specifically, the dimension of the front end portion 25 of the absorbent core 21 in the thickness direction Z decreases toward the outside in the longitudinal direction Y, and the rigidity of the front end portion 25 is lower than that of other portions of the absorbent core 21. As a result, even when the fastener portion 40 overlaps the front end portion 25 of the absorbent core 21, the fastener portion 40 can be fastened together with the absorbent core 21 in a manner that conforms to the body.

[0083] Figure 9 is a view similar to Figure 5 of an example of another embodiment, and in this embodiment, the diaper body 14 is folded in half along the transverse center line Q so that the skin-facing surface of the front waist region 11 and the skin-facing surface of the rear waist region 12 face each other, and the upper and lower fastener portions 41, 42 are fastened to the target region T, and a portion of the lower fastener portion 42 slightly overlaps the absorbent core 21.

[0084] Because the absorbent core 21 has a relatively high rigidity, when worn, its front end 25 may move away from the body and protrude forward, which may cause leakage of bodily fluids. As in this embodiment, the front end 25 of the absorbent core 21 is pressed against the wearer's body by the lower fastener portion 42, thereby preventing the front end 25 of the absorbent core 21 from protruding forward.

[0085] The absorbent core 21 is located inward in the longitudinal direction Y of the center line K1 of the lower fastener portion 42 in the longitudinal direction Y. Here, the "center line K1 of the lower fastener portion 42 in the longitudinal direction Y" refers to an imaginary line that bisects the dimension L5 (see Figure 7) of the lower fastener portion 42 in the longitudinal direction Y.

[0086] In this way, even if the lower fastener portion 42 slightly overlaps the absorbent core 21, the absorbent core 21 is positioned inward in the longitudinal direction Y of the center line K1 of the fastener portion 40, so that the overlapping area between the lower fastener portion 42 and the absorbent core 21 is relatively small. This prevents the front end portion 25 of the absorbent core 21 from protruding forward by the lower fastener portion 42, while minimizing stuffiness inside the diaper 10 and a decrease in the fastening strength of the fastener portion 40, which may be caused by the lower fastener portion 42 and the absorbent core 21 being stacked together.

[0087] Second Embodiment 10, in this embodiment, only one fastener portion 40 is attached to each side panel 15. Although not shown, even in such a case, the fastener portion 40 is fastened in the target region T in a state where it does not overlap or only slightly overlaps with the absorbent core 21.

[0088] In other words, when the fastener portion 40 is attached to the target area T, it is spaced a given distance from the absorbent core 21 in the vertical direction Y, or the front end edge 21a of the absorbent core 21 is positioned below the center line that bisects the dimension in the vertical direction Y, thereby achieving the technical effect described above.

[0089] Third Embodiment 11, in this embodiment, the target area T has a plurality of decorative portions 61, 62, 63 aligned in the horizontal direction X. Specifically, the target tape 50 is formed from a plastic film and a fibrous nonwoven fabric located on its outer surface, and the decorative portions 61, 62, 63 are printed on the plastic film forming the target tape 50 and are visible to the outside through the fibrous nonwoven fabric.

[0090] Furthermore, decorative portions 61, 62, and 63 having the same decorative elements are arranged side by side in the lateral direction X on both the left and right sides of the target tape 50. By fastening the upper and lower fastener portions 41 and 42 to the decorative portion 61 located at the innermost position in the lateral direction X, it is possible to tightly fasten the waist of the wearer. On the other hand, by fastening the upper and lower fastener portions 41 and 42 to the decorative portion 63 located at the outermost position in the lateral direction X, the waist opening of the diaper 10 becomes larger, so that even a wearer with a relatively large waist size can wear the diaper without feeling any pressure.

[0091] In this way, the decorative portions 61, 62, 63 are visible from the outside, and thus serve as markers indicating the fastening position of the fastener portion 40 when wearing the diaper 10, making it easy to visually identify the appropriate fastening position that matches the wearer's waist size. This eliminates the need to adjust the fastening position of the fastener portion 40 according to the size every time the diaper 10 is changed, thereby improving the speed of changing the diaper 10.

[0092] Unlike the illustrated example, the decorative portions 61, 62, and 63 may be printed on the outer sheet 18 or the leak-proof sheet 19, rather than on the target tape 50. In such a case, the decorative portions 61-63 can be formed even when the target tape 50 is not present in the target area T.

[0093] <Fourth embodiment> 12, in this embodiment, the fastener portion 40 is attached to the edge portion of the rear waist opening of the rear waist region 12. Specifically, the distance R1 between the rear waist opening edge 14b and the upper edge 40a of the fastener portion 40 in the longitudinal direction Y is 0 to 15 mm, and preferably 3 to 10 mm.

[0094] In such a case, since the fastener portion 40 is at an even higher position when worn, it does not overlap with the absorbent core 21 when fastened to the target area T, and the influence of the absorbent core 21 can prevent the fastener portion 40 itself from wrinkling, which would reduce the fastening force.

[0095] Unless otherwise specified, various known materials commonly used in this field may be used without limitation for the respective constituent materials of the diaper 10 of the present invention. Furthermore, terms such as "first" and "second" used in this specification are used simply to distinguish between similar elements, positions, etc. [Explanation of symbols]

[0096] 10. Disposable wearable items (disposable diapers) 11 Front waist area 12 Back waist area 13 Crotch area 21 absorbent core 21a Front edge of absorbent core 40 Fastener part 41 Upper fastener 42 Lower fastener 50 Target Tape 51 Part 1 52 Part 2 53 Part 3 61 Decoration Department 62 Decorative section 63 Decoration Department K1 Center line of the fastener part in the longitudinal dimension L3: The longitudinal distance between the front edge of the absorbent core and the outer edge of the target area L5 Vertical dimension of target tape T target area T1 Lower target area T2 Upper target area X horizontal direction Y vertical direction

Claims

1. A disposable open-type wearing article having a longitudinal direction, a lateral direction, a thickness direction, a transverse center line dividing the longitudinal dimension in half, a skin-facing surface and a non-skin-facing surface located on the opposite side thereof, and including a front waist region, a rear waist region, a crotch region located between the front and rear waist regions, and a pair of fasteners attached to both sides of the rear waist region for releasably fastening the front waist region to the rear waist region, The garment further includes an absorbent core extending from the front waist region to the rear waist region, and a target region to which the pair of fastener portions are fastened, a disposable wearing article characterized in that, when the disposable wearing article is folded in half along the transverse center line so that the skin-facing surface of the front waist region and the skin-facing surface of the rear waist region face each other, the absorbent core is located inside the longitudinal center line of the fastener portion.

2. 2. The disposable wearing article according to claim 1, wherein the target area includes a target tape located on the outer surface of the front waist area, and the absorbent core is located more inward in the longitudinal direction than one-third of the longitudinal dimension of the target tape.

3. 3. The disposable wearing article according to claim 1, wherein a distance in the longitudinal direction between the front edge of the absorbent core and the outer edge of the target area is greater than a dimension in the longitudinal direction of the fastener portion.

4. 3. The disposable wearing article according to claim 1, wherein the fastener portion has upper and lower fastener portions aligned in the vertical direction, the upper fastener portion being spaced apart from the absorbent core in the vertical direction, and the lower fastener portion overlapping the absorbent core in the thickness direction.

5. 3. The disposable wearing article according to claim 1, wherein the front edge of the absorbent core has a curved shape.

6. The disposable wearing article according to claim 1 or 2, wherein the portions of the absorbent core positioned outward in the longitudinal direction include regions having different stiffnesses in the longitudinal direction.

7. The disposable wearing article according to claim 6, wherein there are two or more boundaries between the regions having different stiffnesses.

8. The disposable wearing article according to claim 1 or 2, wherein the target area has a plurality of decorative portions arranged in the horizontal direction.

9. 8. The disposable wearing article according to claim 7, further comprising a leak-barrier sheet located on a non-skin-facing side of the absorbent core, wherein the decorative portion is located on the leak-barrier sheet and is visible to the outside through the target area.

10. 3. The disposable wearing article according to claim 1, wherein the front end portion of the absorbent core has a mass per unit area smaller than that of the remaining portion of the absorbent core.

11. The disposable wearing article according to claim 2 , wherein the target tape is breathable.

12. 12. The disposable wearing article according to claim 11, further comprising a hydrophilic or liquid-permeable inner sheet located on the skin-facing side of the absorbent core, the inner sheet being coated with a fragrance.

Images