Disposable diaper

Abstract

In the disposable diaper (1), left and right guide lines (17, 18) that come into contact along the groin, the root of the thigh, and the gluteal cleft of a wearer can be seen on the outer surface of the front transition section (FM), the middle section (M), and the rear transition section (BM). The portions in contact with the roots of the thighs are left and right linear portions (17b, 18b) extending in the longitudinal direction at positions overlapping the left and right inner stretchable materials (12L, 12R) located in the intermediate portion (M). In the rear transition portion BM and the rear portion B, the portions in contact along the gluteal cleft are left and right lower inclined portions 17c, 18c that extend obliquely from a position overlapping the left and right outer stretchable materials 11L, 11R in the rear transition portion BM to the rear ends of the left and right straight line portions 17b, 18b, and the rear transition portion BM and the rear portion B each have an upper inclined portion 17c, 18c and a lower inclined portion 18c, which extend obliquely from a position overlapping the left and right outer stretchable materials 11L, 11R in the rear transition portion BM. The outer stretchable material (11L, 11R), the inner stretchable material (12L, 12R), and the rear stretchable material (13) are disposed in a substantially arc shape in a portion that fits along the buttocks of the wearer when worn, and the inside of the portion is provided with an expansion structure that has an excrement storage space between the portion and the buttocks.

Description

Technical Field

[0001] This invention relates to disposable diapers, particularly belt-type disposable diapers. Background Technology

[0002] Patent Document 1 discloses a disposable diaper with a strap, comprising: a target strap disposed on the outer surface of the ventral portion; a fastening strap protruding from the left and right side edges of the dorsal portion, detachable relative to the target strap; left and right elastic materials disposed along the left and right side edges of the diaper from a portion of the ventral portion through the middle portion to the front half of the dorsal portion; and end wing elastic materials disposed in the left-right direction in the area without absorbent material at the center of the rear end of the dorsal portion. However, regarding this diaper, because the elastic materials are configured as described above, it is difficult to make it conform to the shape of the wearer's rounded buttocks, and it is also difficult to wear it in a proper position without leakage.

[0003] Disposable diapers with straps are mostly worn by caregivers on elderly people or patients who are lying down. As disclosed in Patent Document 1, disposable diapers with straps typically have an overall shape that is a rectangle with its middle section narrowed along its length. The diaper of this shape is placed against the buttocks, groin, and lower abdomen of the body, folded, aligned, and then secured using straps, thus completing the wearing process. However, the human body has a three-dimensional and complex shape, making it difficult to properly wear a disposable diaper with a simple and flat shape as described above in a way that prevents leakage. In particular, it is difficult to ensure that the diaper contacts the wearer's groin, the base of the thighs, and the buttocks; furthermore, it is difficult to determine an appropriate strap fixation position that can maintain such a state.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 5603391 Summary of the Invention

[0007] One object of the present invention is to provide a disposable diaper that is easy to wear properly in a manner that does not cause leakage of excrement.

[0008] One aspect of the present invention, a disposable diaper, is characterized by comprising: a main body in which an absorbent is enclosed within a plurality of sheets, the main body having an overall rectangular shape that narrows in width at its middle portion along its length, having a front portion as one end along the length and a rear portion as the other end and longer than the front portion, a front transition portion extending from the front portion to the middle portion and a rear transition portion extending from the rear portion to the middle portion narrowing in width toward the middle portion; a strap protruding outward from the left and right side edges of the rear portion of the main body; and a fastening portion provided at the protruding ends of the strap, capable of being attached and detached relative to the outer surface of the front portion or the front transition portion of the main body, from the left... An outer stretchable material, composed of a set of filamentous stretchable materials, is disposed along the left and right side edges in the length direction at the middle portion of the main body, and inclined along the left and right side edges at the rear transition portion. It is also disposed along the left and right side edges in the length direction at the rear portion (excluding the rear end) and inclined towards the left and right center lines at the rear end. An inner stretchable material, composed of a set of filamentous stretchable materials, is disposed closer to the left and right center lines than the outer stretchable materials. This inner stretchable material is disposed away from the outer stretchable material in the length direction at the middle portion of the main body, and approaches the outer stretchable material towards the rear portion at the rear transition portion. The stretchable material is arranged at an angle, with the outer stretchable material positioned along the length of the rear portion (excluding the rear end) and angled towards the left and right center lines along the outer stretchable material at the rear end. A rear stretchable material is positioned in the width direction such that it connects the left and right inner stretchable materials near the rear edge of the rear portion of the main body. Left and right guide lines are provided along the wearer's groin, the root of the thigh, and the buttocks, and these guide lines are visible on the outer surfaces of the front transition portion, the middle portion, and the rear transition portion of the main body. The guide lines along the root of the wearer's thigh are... The contact portion is a straight portion extending along the length direction at the position where it overlaps with the left and right inner elastic materials located in the middle part. The portion of the left and right guide lines that contacts the wearer's buttocks is a downwardly sloping portion extending from the position where it overlaps with the left and right outer elastic materials located in the rear transition part to the rear end of the left and right straight portions. In the rear transition part and the rear part of the main body, the portion where the outer elastic material, the inner elastic material and the rear elastic material are arranged in a generally arc shape fits along the wearer's buttocks when worn. Furthermore, the inner side of this portion has an expansion structure that provides an excrement storage space between it and the buttocks.

[0009] Regarding the disposable diaper, the portion of the left and right guide lines that contacts the wearer's groin can be an upwardly inclined portion extending from the position where it overlaps with the left and right outer stretchable material at the front transition section to the front end of the left and right straight portion.

[0010] Regarding this disposable diaper, the center point of the portion of the guide lines indicating the left and right sides that contacts the wearer's groin can be seen on the outer surface of the body.

[0011] Regarding the disposable diaper, the center line arranged on the left and right center lines of the main body can be seen on the outer surface of the main body.

[0012] Regarding the disposable diaper, left and right reference marks, which serve as the target for the installation position of the fastener and are symmetrically arranged along the left and right center lines, can be seen on the outer surface of the main body.

[0013] Regarding the disposable diaper, a set of graphic markings that are symmetrically formed or regularly arranged with lines perpendicular to the left and right center lines sandwiched between the front of the main body can be seen on the outer surface of the main body.

[0014] Regarding the disposable diaper, the pattern of the main body extending from the middle to the rear can only be seen on the outer surface of the rear, within the area surrounded by the left and right inner stretchable materials.

[0015] The disposable diaper can be such that the fastening part can be attached to or detached from the target strip provided on the outer surface at the front or front transition part of the main body.

[0016] The disposable diaper may further have a protective wing, the base of which is fixed to the rear edge of the main body, and a telescopic material for the protective wing is disposed at the free end in the left-right direction, the rear telescopic material being disposed inside the base of the protective wing.

[0017] The disposable diaper may further include: left and right upright sheets for standing up along the left and right side edges in the middle part of the main body, and left and right upright stretchable materials disposed along the free ends of the left and right upright sheets.

[0018] Regarding the disposable diaper, the absorbent body may have: two constricted necks on each side, and bulges on the left and right sides located between the constricted necks.

[0019] Regarding the disposable diaper, the absorbent body may have: two constricted necks on the left and right sides, and left and right bulges located between the constricted necks, with the inner elastic material of the left and right sides disposed near the base of the left and right bulges.

[0020] This invention is not limited to the above-described objectives or solutions. A more complete understanding of the invention and the numerous effects it provides will be more readily apparent upon referring to the following detailed description and the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a bottom view of a disposable diaper of Embodiment 1 of the present invention in a state where the stretchable material has not exerted its stretching force.

[0022] Figure 2 yes Figure 1 Schematic end view of II-II of a disposable diaper.

[0023] Figure 3 yes Figure 1 Schematic end view of disposable diapers (III-III).

[0024] Figure 4 This is a photograph showing the back of the disposable diaper of the present invention in the state of being worn.

[0025] Figure 5 This is a frontal photograph showing the disposable diaper of the present invention being worn.

[0026] Figure 6 This is a bottom view of the disposable diaper of Embodiment 2 of the present invention in a state where the elastic material has not exerted its elastic force.

[0027] Figure 7 yes Figure 6 A bottom view of the film from which a disposable diaper was made.

[0028] Figure 8 This is a frontal photograph showing the disposable diaper of the present invention unfolded to the left and right sides during wear.

[0029] Figure 9 This is a frontal photograph showing the disposable diaper of the present invention fully worn and with the fastening part attached to the outer surface of the diaper body. Detailed Implementation

[0030] [Example 1]

[0031] Reference Figures 1 to 5 The disposable diaper of Embodiment 1 of the present invention will be described.

[0032] like Figure 1 As shown, the disposable diaper 1 is a strip-type disposable diaper. Regarding the main body 2 of the disposable diaper 1, the length direction is defined as the front-to-back direction, and the width direction as the left-to-right direction. The main body 2 has an overall rectangular shape where the width narrows towards the middle portion M in the length direction. The main body 2 has: a front portion F as one end in the length direction, a rear portion B as the other end and longer than the front portion F, and the middle portion M whose width is narrower than both the front portion F and the rear portion B. The front transition portion FM from the front portion F to the middle portion M and the rear transition portion BM from the rear portion B to the middle portion M narrow in width as they approach the middle portion M.

[0033] Regarding the main body 2, the liquid-retaining absorbent 3 is enclosed within multiple sheets. These multiple sheets consist of a top sheet 4, a bottom sheet 5, and an outer sheet 6.

[0034] The absorbent 3 rapidly absorbs and retains liquids such as urine excreted by the wearer. The absorbent 3 is made from raw materials including, for example, absorbent fibers obtained by descaling rolled paper pulp, and powdered or granular superabsorbent polymers. These raw materials are pneumatically conveyed to a molding die located on the periphery of the suction drum, drawn into the molding die, and stacked to form the absorbent. The absorbent 3 is formed by clamping the molded material 3a with two sheets of absorbent paper 3b and 3c.

[0035] The top sheet 4 forms the wearer-facing surface of the main body 2. The top sheet 4 is generally rectangular and covers the wearer-side surface of the absorbent body 3, and the two are fixed with adhesive or the like. The top sheet 4 is liquid-permeable, allowing liquids such as urine excreted by the wearer to pass through and move into the absorbent body 3.

[0036] The top sheet 4 is made of a liquid-permeable nonwoven fabric, such as a nonwoven fabric composed of chemical fibers such as polyethylene, polypropylene, polyester, nylon, and rayon; natural fibers such as cotton and cellulose; or a combination thereof. The top sheet 4 is not limited to the above-mentioned nonwoven fabrics, and can be made of suitable liquid-permeable materials, such as porous films, cotton paper, or sheets obtained by appropriately splicing them together.

[0037] The backing sheet 5 is roughly rectangular and covers the side of the absorbent body 3 opposite to the wearer's side, and the two are fixed together with adhesive or the like. The backing sheet 5 is liquid-impermeable to prevent excrement that has passed through the top sheet 4 and excrement that has not been absorbed or retained by the absorbent body 3 from leaking to the outside.

[0038] The substrate 5 is made of a liquid-impermeable film, such as polyethylene, polypropylene, or polyester, or a liquid-impermeable nonwoven fabric. The substrate 5 is not limited to the aforementioned film or nonwoven fabric, but can be made of a suitable liquid-impermeable material, such as a liquid-impermeable stretchable material, a material coated with a waterproof adhesive, a laminate of these materials, or a sheet material obtained by appropriately splicing them together.

[0039] The outer sheet 6 constitutes the outer surface of the main body 2. The outer sheet 6 has the same overall shape as the main body 2, but with the width of the middle portion M in the approximate length direction of the rectangle narrowed. The outer sheet 6 is configured to further cover the base sheet 5 covering the absorbent 3, and the two are fixed together with an adhesive or the like. Figure 2 and Figure 3 As shown, in this embodiment, two outer coverslip sheets 6 and 6 are stacked on the substrate 5. The three coverslip sheets are fixed together with adhesives or the like.

[0040] The outer sheet 6 is made of, for example, nonwoven fabric composed of chemical fibers such as polyethylene, polypropylene, polyester, nylon, and rayon; natural fibers such as cotton and cellulose; or combinations thereof. The liquid impermeability of the outer sheet 6 may be weaker than that of the substrate 5.

[0041] The disposable diaper 1 has two straps 7 (7L1, 7L2, 7R1, 7R2) protruding outward from the left and right side edges 2L, 2R of the rear portion B of the main body 2. The straps 7 (7L1, 7L2, 7R1, 7R2) are fixed to the vicinity of the left and right side edges 2L, 2R of the rear portion B of the main body 2 by means of adhesive, heat fusion or the like.

[0042] The band 7 is made of a nonwoven fabric, for example, chemical fibers such as polyethylene, polypropylene, polyester, nylon, and rayon; or natural fibers such as cotton and cellulose; or a combination thereof. The band 7 is not limited to the aforementioned nonwoven fabrics. For example, part or all of the band 7 can be made of a stretchable material. When part or all of the band 7 is made of a stretchable material, the stretchability of the band 7 allows for appropriate adjustment of the position of the fastening part 8 relative to the outer surface of the main body 2 when wearing the disposable diaper 1. Therefore, the fit and size compatibility of the disposable diaper 1 are further improved.

[0043] Each protruding end of the band 7 (7L1, 7L2, 7R1, 7R2) is provided with a fastening part 8 (8L1, 8L2, 8R1, 8R2) that can be attached to or detached from the outer surface of the front part F or the front transition part FM of the main body 2. The fastening part 8 that can be attached to or detached from the outer surface of the main body 2 can be selected according to the material of the outer surface of the main body 2. For example, if the material constituting the outer surface of the main body 2 is non-woven fabric, a Velcro closure consisting of small hook pieces that can be detachably attached to the material can be used. Alternatively, an adhesive tape with adhesive properties can be used for the fastening part 8.

[0044] In the disposable diaper 1, a target strip 9 is provided on the surface of the outer sheet 6 of the front part F and the front transition part FM of the main body 2. The target strip 9 constitutes an outer surface that can be attached and detached from the fastening parts 8 (8L1, 8L2, 8R1, 8R2).

[0045] like Figure 1 As shown, the target strip 9 on the outer surface of the front part F and the front transition part FM of the main body 2 is printed with a mark, namely the target 10, which assists in determining the position for mounting and dismounting the fastener 8.

[0046] Furthermore, the disposable diaper 1 includes: left and right outer stretchable materials 11L and 11R, each composed of a set of filamentous stretchable material, disposed near the left and right side edges 2L and 2R of the main body 2; left and right inner stretchable materials 12L and 12R, each composed of a set of filamentous stretchable material, disposed near the left and right center line C1, compared to the left and right outer stretchable materials 11L and 11R; and a rear stretchable material 13, disposed along the width direction near the rear end edge 2B of the rear portion B of the main body 2. The rear stretchable material 13 is configured to connect the left and right inner stretchable materials 12L and 12R.

[0047] like Figure 3 As shown, the left and right outer stretchable materials 11L and 11R and the left and right inner stretchable materials 12L and 12R are stretchably joined between the two outer panels 6 and 6 using adhesives, heat fusion, or the like. Not limited to the above, for example, the left and right outer stretchable materials 11L and 11R or the left and right inner stretchable materials 12L and 12R can be joined between the outer panel 6 and the base sheet 5.

[0048] like Figure 1 and Figure 2 As shown, the disposable diaper 1 also includes a protective wing 15. The protective wing 15 is configured such that its base end is fixed near the rear end edge 2B of the rear portion B of the main body 2, and a wing-shaped stretchable material 14 is disposed along its free end in the left-right direction. The rear stretchable material 13 is disposed within the base end of the protective wing 15 and is joined with an adhesive or the like in a way that allows it to stretch and extend in the left-right direction. The wing-shaped stretchable material 14 is joined with an adhesive or the like in the free end of the protective wing 15 in a way that allows it to stretch and extend in the left-right direction. Regarding the protective wing 15, the base end side is fixed to the rear portion B of the main body 2, and the free end side can stand upright.

[0049] The left and right outer telescopic materials 11L and 11R are arranged along the left and right side edges 2L and 2R in the length direction at the middle part M of the main body 2, and are inclined along the left and right side edges 2L and 2R at the rear transition part BM. They are arranged along the left and right side edges 2L and 2R in the length direction at the rear part B except for the rear end, and are inclined toward the left and right center lines C1 at the rear end.

[0050] In addition, the left and right inner telescopic materials 12L and 12R are disposed in the length direction away from the outer telescopic materials 11L and 11R at the middle part M of the main body 2, and are inclined at the rear transition part BM in a manner that approaches the outer telescopic materials 11L and 11R as they move toward the rear part B. The rear part B, except for the rear end, is disposed in the length direction along the outer telescopic materials 11L and 11R, and is inclined at the rear end along the outer telescopic materials 11L and 11R toward the left and right center lines C1.

[0051] Furthermore, the rear telescopic material 13 is positioned in the width direction near the rear edge 2B of the rear portion B of the main body 2, connecting the left and right inner telescopic materials 12L and 12R. Thus, in the rear transition portion BM and the rear portion B of the main body 2, the outer telescopic materials 11L and 11R, the inner telescopic materials 12L and 12R, and the rear telescopic material 13 are arranged in a generally arc-shaped configuration. Furthermore, as... Figure 4 As shown, the rear transition portion BM and the rear portion B of the main body 2 fit snugly along the wearer's buttocks when worn, and have an expansion structure 16 that provides a space for collecting excrement between the body and the buttocks. Therefore, even when a large amount of excrement is discharged, it can be retained, thus more reliably preventing leakage of excrement.

[0052] According to the disposable diaper 1, at the rear transition portion BM and the rear portion B of the main body 2, the outer elastic materials 11L, 11R, the inner elastic materials 12L, 12R, and the rear elastic material 13 are arranged in a generally arc shape to fit along the wearer's rounded buttocks. Therefore, the gap between the diaper and the wearer can be eliminated, preventing leakage of excrement. Furthermore, by having an expansion structure 16 on the inner side of the portions of the rear transition portion BM and the rear portion B of the main body 2 where the outer elastic materials 11L, 11R, the inner elastic materials 12L, 12R, and the rear elastic material 13 are arranged, which provides an excrement collection space between the diaper and the buttocks when worn, this structure can be maintained even when a large amount of excrement is discharged, thus reliably preventing leakage of excrement. In this way, the belt-type disposable diaper can be worn like a shorts-type diaper with an expansion structure.

[0053] If the disposable diaper 1 is not properly worn along the wearer's groin, the base of the thighs, and the buttocks, a gap will form between the diaper and the wearer. Furthermore, the expansion structure 16, which provides sufficient capacity for collecting excrement, cannot be formed and maintained. Therefore, leakage of excrement within the excrement collection space will occur. Thus, it is important to wear the disposable diaper 1 properly.

[0054] Therefore, regarding the disposable diaper 1, on the outer surface of the main body 2 at the front transition portion FM, the middle portion M, and the rear transition portion BM, left and right guide lines 17 and 18 can be seen that contact the wearer's groin, the root of the thigh, and the buttocks. At the left and right guide lines 17 and 18, the portion contacting the wearer's root of the thigh is a left and right straight portion 17b and 18b extending along the length direction at a position overlapping with the left and right inner elastic materials 12L and 12R located in the middle portion M. The portion contacting the wearer's buttocks is a left and right downwardly sloping portion 17c and 18c extending obliquely from a position overlapping with the left and right outer elastic materials 11L and 11R located in the rear transition portion BM to the rear end of the left and right straight portions 17b and 18b. The portion that contacts the wearer's groin is the left and right upwardly inclined portion 17a and 18a, which extends obliquely from the position where it overlaps with the left and right outer stretchable materials 11L and 11R located at the front transition portion FM to the front end of the left and right straight portions 17b and 18b.

[0055] The method of wearing the disposable diaper 1 using the guide lines 17 and 18 will be described. First, the straight portions 17b and 18b of the left and right guide lines 17 and 18 are brought into contact with the boundary between the wearer's thigh and crotch, i.e., the root of the thigh. Next, the left and right downward sloping portions 17c and 18c are brought into contact with the boundary between the wearer's thigh and buttocks, i.e., the gluteal cleft. Finally, the left and right upward sloping portions 17a and 18a are brought into contact with the wearer's groin. Afterward, the fastening portions 8 (8L1, 8L2, 8R1, 8R2) provided on the outer surface of the front portion F or the front transition portion FM of the main body 2 are attached to the straps 7 (7L1, 7L2, 7R1, 7R2) for fixation.

[0056] As described above, the guide lines 17 and 18 are first made to contact the root of the wearer's thigh, then along the buttock crease, and finally along the groin. In this state, the disposable diaper 1 can be worn easily and reliably. The portion of the rear transition portion BM and the rear portion B of the main body 2, which is equipped with the outer elastic material 11L, 11R, the inner elastic material 12L, 12R, and the rear elastic material 13, fits along the wearer's rounded buttocks. Furthermore, the inner side of this portion has an expansion structure 16 that provides an excrement storage space between it and the buttocks.

[0057] Furthermore, regarding the disposable diaper 1, the center points 19L and 19R of the left and right sides of the portion of the guide lines 17 and 18 that contact the root of the wearer's thigh, i.e., the center positions of the straight portions 17b and 18b, are visible on the outer surface of the main body 2.

[0058] In the method of wearing the disposable diaper 1 with the aforementioned guide lines 17 and 18, when the straight portions 17b and 18b are brought into contact along the boundary between the wearer's thigh and crotch, i.e. the root of the thigh, the straight portions 17b and 18b can be easily and accurately identified through the left and right center points 19L and 19R.

[0059] like Figure 1 and Figure 3 As shown, the main body 2 of the disposable diaper 1 includes left and right upright sheets 20L and 20R for standing upright along the fold lines 20L1 and 20R1 of the left and right side edges 2L and 2R in the middle portion M. The left and right upright sheets 20L and 20R are fixed to the top sheet 4 with adhesive or the like between the fold line 20L1 and the left side edge 2L, between the fold line 20R1 and the right side edge 2R, along the front edge 2F, and along the rear edge 2B. The unfixed portions of the left and right upright sheets 20L and 20R are formed from the top sheet 4 as upright portions standing upright along the fold lines 20L1 and 20R.

[0060] Left and right elevating elastic materials 21L and 21R, each composed of a set of filamentous elastic material, are disposed along the free ends 20L2 and 20R2 of the left and right elevating sheets 20L and 20R in the front-back direction. The left and right elevating elastic materials 21L and 21R are joined in a way that allows them to stretch in the front-back direction between the two layers of the left and right elevating sheets 20L and 20R folded back at their free ends 20L2 and 20R2.

[0061] By contracting the left and right upright stretchable materials 21L and 21R in the front-to-back direction, the upright portions of the left and right upright sheets 20L and 20R are pleated and stand up from the top sheet 4. When wearing the disposable diaper 1, the upright portions of the left and right upright sheets 20L and 20R fit snugly against the wearer, preventing excrement from leaking to the outside.

[0062] The left and right upright sheets 20L and 20R are made of, for example, nonwoven fabric with liquid impermeability or water repellency. Alternatively, they can be made of the same raw materials as the base sheet 5 or the outer sheet 6.

[0063] The outer telescopic materials 11L and 11R, the inner telescopic materials 12L and 12R, the rear telescopic material 13, the wing telescopic material 14, and the erecting telescopic materials 21L and 21R are made of stretchable materials such as natural rubber, polyurethane resin, and olefin elastomers.

[0064] like Figure 1As shown, the absorbent body 3 has a front part 3F, a middle part 3M, and a rear part 3B corresponding to the lower abdomen, crotch, and buttocks of the wearer, respectively. Between the front part 3F and the middle part 3M, there are left and right first constricted necks 3d and 3e, which are narrowed in the left and right directions. Between the middle part 3M and the rear part 3B, there are left and right second constricted necks 3f and 3g, which are narrowed in the left and right directions.

[0065] The middle portion 3M of the absorbent body 3 has left and right bulges 3L and 3R that bulge outward significantly between the first and second constricted necks 3d and 3f on the left side and between the first and second constricted necks 3e and 3g on the right side. Therefore, the disposable diaper 1 arranges the left and right bulges 3L and 3R of the absorbent body 3 along the wearer's thighs, thereby increasing the absorbency of the middle portion M of the main body 2 and preventing excrement from leaking from the left and right sides.

[0066] By appropriately aligning the width between the two roots of the left and right bulges 3L and 3R of the absorbent body 3 with the width of the wearer's crotch area, the disposable diaper 1 improves the fit to the wearer's crotch area. The width between the two roots of the left and right bulges 3L and 3R of the absorbent body 3 is the distance between the line connecting the two innermost points of the first and second constrictions 3d and 3f on the left side and the line connecting the two innermost points of the constrictions 3e and 3g on the right side. The width between the two roots of the left and right bulges 3L and 3R of the absorbent body 3 is appropriately selected according to the size of the disposable diaper 1, for example, it can be appropriately selected between 80mm and 120mm.

[0067] The set of filamentous stretchable materials constituting the left and right inner stretchable materials 7L and 7R overlaps with the left and right bulges 3L and 3R of the absorbent body 3 and is arranged parallel to each other in the front-back direction. Therefore, since the left and right bulges 3L and 3R are supported by the left and right inner stretchable materials 7L and 7R, and the absorption force of the middle part 3M is increased, lateral leakage of excrement can be prevented.

[0068] [Example 2]

[0069] Reference Figures 6 to 9 The disposable diaper of Embodiment 2 of the present invention will be described below. Where the elements of Embodiment 2 use the same names and symbols as those of Embodiment 1, and where the elements are the same as those of Embodiment 1, the description is omitted. Reference will also be made to Embodiment 2 where necessary. Figures 2 to 5 .

[0070] like Figure 6As shown, the disposable diaper 1 of Embodiment 2 is a belt-type disposable diaper. On the outer surface of the main body 2 of the disposable diaper 1, the following can be seen: the center line 19 arranged in a dotted line on the left and right center lines C1 of the main body 2; the left and right guide lines 17 and 18 that contact the wearer's groin, the root of the thigh and the buttocks; the left and right reference marks 10L and 10R that are symmetrically arranged with the left and right center lines C1 as the target for the installation position of the fastening part 8; a set of graphic marks 10 that are symmetrically formed or regularly arranged with the left and right center lines C1 and the lines H1 that are orthogonal to the left and right center lines on the front part F and the front transition part FM of the main body 2; the left and right center points 19L and 19R that indicate the center positions of the left and right guide lines 17 and 18 in the length direction; and the pattern 22 that extends to the middle part M, the rear transition part BM and the rear part B of the main body 2.

[0071] like Figure 7 As shown, the center line 19, the left and right guide lines 17 and 18, the left and right reference marks 10L and 10R, the set of graphic marks 10, the left and right center points 19L and 19R, and the pattern 22 are printed on the film 5. Figure 6 As shown, apart from the center line 19F (described later), the left and right guide lines 17 and 18, the left and right center points 19L and 19R, and the pattern 22 are visible through the two outer sheets 6 and 6 covering the film 5. The center line 19F, the left and right reference marks 10L and 10R, and the set of graphic marks 10 are visible through the two outer sheets 6 and 6 covering the film 5 and the target strip 9 fixed to the sheets 6 and 6.

[0072] This set of graphic markings 10 serves as markings for properly mounting the fastening portions 8 (8L1, 8L2, 8R1, 8R2) of the straps 7 (7L1, 7L2, 7R1, 7R2) to the outer surface of the front portion F and the front transition portion FM of the body 2. For example... Figure 7As shown, the set of graphic marks 10 is symmetrically formed or regularly arranged, sandwiching the left and right center lines C1 of the main body 2 and sandwiching lines H1 orthogonal to the left and right center lines C1. More specifically, regarding the set of graphic marks 10, there are 3 columns on each side starting from the left and right center lines C1, with 5 squares in each column arranged with gaps between them. Among them, the second columns of graphics 10L and 10R on the left and right sides located on the orthogonal lines H1 have shapes different from the squares as described later. Regarding the set of graphic marks 10, the further away from the left and right center lines C1, the greater the gap between them in the direction of the left and right center lines C1. Therefore, the two rows of graphics on the left side, which are located above the orthogonal lines H1, are arranged at an angle from the upper left to the lower right, and the two rows of graphics on the right side, which are located above the orthogonal lines H1, are arranged at an angle from the upper right to the lower left. In addition, the two rows of graphics located on the left side, which are lower than the orthogonal line H1, are tilted from the lower left to the upper right, and the two rows of graphics located on the right side, which are lower than the orthogonal line H1, are tilted from the lower right to the upper left.

[0073] The set of graphic markings 10 includes a pair of left and right reference markings 10L and 10R located on the orthogonal line H1 and having features that distinguish them from other graphics. The left and right reference markings 10L and 10R are in the shape of a four-leaf clover, with only the upper left leaf of the left reference marking 10L and the upper right leaf of the right reference marking 10R hollow. In this way, the left and right reference markings 10L and 10R have features that distinguish them from other graphics, such as different shapes, sizes, or colors, and are therefore conspicuous. They serve as markings for determining the position of each fastening part 8 of each strap 7 on the outer surface of the main body 2. Therefore, it is easy to determine the appropriate wearing position of the diaper 1 for the wearer based on these markings, and it is also easy to achieve this appropriate wearing position subsequently.

[0074] The left and right reference marks 10L and 10R, and the graphic marks 10La and 10Ra adjacent to the reference marks 10L and 10R respectively, are larger than the other graphics. Therefore, the reference marks 10L and 10R and the area around them are easy to identify, so the strap 7 can be easily pulled up or down toward the area to install the fastener 8.

[0075] like Figure 6 and Figure 7As shown, the center line 19 is arranged in a dashed form on the left and right center lines C1 of the main body 2. Among the center lines 19, the size marking center line 19F, which intersects the orthogonal line H1 at the front F, and the size marking center line 19B, which is located approximately in the center of the rear B, are larger in length and width than the other center lines 19, and are marked with the letter "M" indicating the size of the diaper. The center line 19 is visible on the outer surface of the main body 2, and the position of the left and right center lines of the main body 2 can be easily identified. Therefore, when the disposable diaper 1 is worn on the human body, it can be positioned with reference to the center line 19.

[0076] The left and right guide lines 17 and 18 respectively have portions that contact the wearer's groin, the root of the thigh, and the buttocks, namely, the left and right upward sloping portions 17a and 18a, the straight portions 17b and 18b, and the left and right downward sloping portions 17c and 18c. Figure 6 As shown, regarding the left and right guide lines 17 and 18, the left and right straight portions 17b and 18b are arranged at positions overlapping with the left and right bulges 3L and 3R of the absorber 3 and the left and right inner stretchable materials 12L and 12R. The left and right upward inclined portions 17a and 18a are arranged along the left and right side edges of the front portion 3F of the absorber 3, and the left and right downward inclined portions 17c and 18c are arranged along the left and right side edges of the rear portion 3B of the absorber 3.

[0077] In detail, the portions of the left and right guide lines 17 and 18 that contact the root of the wearer's thigh are the left and right straight portions 17b and 18b extending along the length direction at the position where they overlap with the left and right inner elastic materials 12L and 12R located in the middle part M. The portions that contact the wearer's buttocks are the left and right downward sloping portions 17c and 18c extending obliquely from the position where they overlap with the left and right outer elastic materials 11L and 11R located in the rear transition part BM to the rear end of the left and right straight portions 17b and 18b. The portions that contact the wearer's groin are the left and right upward sloping portions 17a and 18a extending obliquely from the position where they overlap with the left and right outer elastic materials 11L and 11R located in the front transition part FM to the front end of the left and right straight portions 17b and 18b.

[0078] like Figure 6 and Figure 7 As shown, the left and right center points 19L and 19R respectively indicate the center positions of the left and right guide lines 17 and 18 along their length direction, forming a roughly bullet shape with the arc-shaped portions arranged opposite each other. When the straight portions 17b and 18b of the left and right guide lines 17 and 18 are brought into contact along the root of the wearer's thigh, the center positions of the straight portions 17b and 18b can be easily and accurately identified by the left and right center points 19L and 19R.

[0079] The pattern is 22. Figure 7 The film 5 shown is printed on the main body 2, and as shown Figure 6 The portion M, the rear transition portion BM, and the rear portion B, which extend to the main body 2, are visible through the outer sheet 6, 6 constituting the outer surface of the main body 2. Figure 6 or Figure 4 As shown, the pattern 22 is only visible on the outer surface of the expansion structure 16 formed on the left and right outer elastic materials 11L and 11R, the left and right inner elastic materials 12L and 12R, and the inner side of the rear elastic material 13, which are arranged to surround the wearer's buttocks. Therefore, when wearing the disposable diaper 1, the area where the expansion structure 16 is formed can be easily identified by the pattern 22, making it easy to wear the diaper body 2 at the appropriate position on the wearer's buttocks.

[0080] Reference Figure 8 and Figure 9 When the disposable diaper 1 is worn by the wearer, firstly, the straight portions 17b and 18b of the left and right guide lines 17 and 18 are brought into contact along the boundary between the wearer's thigh and crotch, i.e., the root of the thigh. Next, the downward sloping portions 17c and 18c of the left and right guide lines 17 and 18 are brought into contact along the boundary between the wearer's thigh and buttocks, i.e., the gluteal cleft. Finally, the upward sloping portions 17a and 18a of the left and right guide lines 17 and 18 are brought into contact along the wearer's groin. Afterward, it is secured by attaching the fastening portions 8 (8L1, 8L2, 8R1, 8R2) of the straps 7 (7L1, 7L2, 7R1, 7R2) to the outer surface of the front part F or the front transition part FM of the main body 2. By using this method for wearing, it is possible to easily and reliably achieve the following: the portion of the rear transition portion BM and the rear portion B of the main body 2, which is equipped with the outer elastic materials 11L and 11R, the inner elastic materials 12L and 12R, and the rear elastic material 13, fits along the wearer's buttocks, and the inner side of this portion has an expansion structure 16 with sufficient capacity for excrement storage space between it and the buttocks.

[0081] like Figure 8 As shown, when the rear portion B of the main body 2 of the disposable diaper 1 is placed under the buttocks of the wearer, the middle portion M is in contact with the crotch, and the front portion F is placed above the lower abdomen, the proper positioning of the main body 2 is facilitated by aligning the center line 19 along the left-right center line from the wearer's navel to the crotch. Furthermore, when the fastening portion 8 of the strap 7 is attached to the outer surface of the main body 2, as... Figure 8As shown, the reference marks 10L and 10R on the left and right are used as markers, as follows: Figure 9 As shown, firstly, while pulling the lower left strap 7L2 upwards towards the upper right (L2), the fastening part 8L2 is installed on the outer surface. Then, while pulling the lower right strap 7R2 upwards towards the upper left (R2), the fastening part 8R2 is installed on the outer surface. Next, while pulling the upper left strap 7L1 downwards towards the lower right (7L1), the fastening part 8R1 is installed on the outer surface. Then, while pulling the upper right strap 7R1 downwards towards the lower left (R1), the fastening part R1 is installed on the outer surface. This allows the main body 2 to fit snugly against the human body, making it easy to wear in a way that prevents leakage of excrement.

[0082] According to Embodiment 2, the disposable diaper 1 has a center line 19 disposed on the left and right center lines C1 of the main body 2, left and right guide lines 17 and 18 contacting the wearer's groin, the root of the thigh, and the buttocks, and left and right reference marks 10L and 10R symmetrically arranged with the left and right center lines C1 as targets for the installation position of the fastening part 8. These markings are printed on the backing sheet 5 of the main body 2 and can be seen through the outer sheet 6, 6, and even the target strip 9 constituting the outer surface of the main body 2. Therefore, based on the center line 19, the position of the left and right center lines of the main body 2 can be easily and accurately identified, making it easy to position the diaper on the wearer's left and right center lines. Furthermore, based on the left and right guide lines 17 and 18, it is easy for the main body 2 to contact the wearer's groin, the root of the thigh, and the buttocks. Moreover, based on the left and right reference marks 10L and 10R, it is easy to determine the appropriate installation position of the diaper 1 for the wearer, and it is also easy to reproduce the appropriate installation position thereafter. Therefore, it is possible to provide disposable diapers that are easy to wear properly without leakage.

[0083] In the disposable diaper 1 of Embodiment 2, a set of graphic marks 10, together with the center line 19, the left and right guide lines 17 and 18, and the left and right reference marks 10L and 10R, are printed on the film 5 of the main body 2. They are symmetrically formed or regularly arranged between the left and right center lines C1 and between the front part F and the front transition part FM of the main body 2, and can be seen through the outer sheet 6, 6 and the target strip 9 constituting the outer surface of the main body 2. Furthermore, the further away from the left and right center lines C1 each graphic mark 10 is, the greater the spacing between them in the direction of the left and right center lines. In addition, the set of graphic marks 10 includes the left and right reference marks 10L and 10R. Furthermore, the left and right reference marks 10L and 10R are larger and different in shape than the other graphic marks 10 in the set. Therefore, based on the left and right reference marks 10L and 10R, it is easy to determine the appropriate installation position of the diaper 1 for the wearer, and it is also easy to reproduce the appropriate installation position later. In addition, by first pulling the lower left strap 7L2 towards the upper right direction L2 while installing the fastening part 8L2 on the outer surface, and then pulling the lower right strap 7R2 towards the upper left direction R2 while installing the fastening part 8R2 on the outer surface, and then pulling the upper left strap 7L1 towards the lower right direction 7L1 while installing the fastening part 8R1 on the outer surface, and then pulling the upper right strap 7R1 towards the lower left direction R1 while installing the fastening part R1 on the outer surface, the diaper body 2 is made to fit snugly against the human body, thus making it easy to wear in a way that does not cause excrement leakage.

[0084] In the disposable diaper 1 of Embodiment 2, the center points 19L and 19R, which together with the center line 19, the left and right guide lines 17 and 18, and the left and right reference marks 10L and 10R, indicating the center positions of the left and right guide lines 17 and 18 in the length direction, are printed on the backing sheet 5 of the main body 2 and can be seen through the outer sheet 6, 6 constituting the outer surface of the main body 2. Therefore, the center positions of the left and right guide lines 17 and 18 can be easily and accurately identified through the left and right center points 19L and 19R, and the left and right guide lines 17 and 18 can contact the wearer's groin, the root of the thigh, and the buttock crease.

[0085] In the disposable diaper 1 of Embodiment 2, a pattern 22 extending to the middle portion M, the rear transition portion BM, and the rear portion B of the main body 2, together with the center line 19, the left and right guide lines 17 and 18, and the left and right reference marks 10L and 10R, is printed on the base film 5 of the main body 2 and can be seen through the outer sheet 6, 6 constituting the outer surface of the main body 2. Furthermore, the pattern 22 is only visible on the outer surface of the rear portion B and the rear transition portion BM of the main body 2 on the stretchable materials 11L and 11R, 12L and 12R that are arranged to surround the wearer's buttocks, and on the outer surface of the expansion structure 16 formed inside 13. Therefore, when wearing the disposable diaper 1, the area where the expansion structure 16 is formed can be easily identified by the pattern 22, making it easy to wear the diaper body 2 at the appropriate position on the wearer's buttocks.

[0086] In the disposable diaper 1 of Example 2, the main body 2 includes: a liquid-permeable top sheet 4 that holds the absorbent 3 and a liquid-impermeable bottom sheet 5; and transparent or translucent outer sheets 6 and 6 that cover the bottom sheet 5 and serve as the outer surface of the diaper main body 2. The lines 19, 17, and 18, the marks 10, 10L, and 10R, and the dots 19L and 19R are printed on the bottom sheet 5 and are visible through the outer sheets 6 and 6. Therefore, by focusing on the materials of the bottom sheet 5 to be printed and the outer sheets 6 and 6 constituting the outer surface, it is possible to achieve a clear print that is visible from the outer surface.

[0087] In the disposable diaper 1 of Embodiment 2, a transparent or semi-transparent target strip 9 is fixed on the outer sheet 6, 6 constituting the outer surface of the main body 2, which allows the fastening part 8 to be installed and removed. Therefore, even when viewed through the target strip 9, the lines, marks, or dots can be seen. Furthermore, regardless of the material of the outer sheet 6, 6 constituting the outer surface of the diaper main body 2, the fastening part 8 can be installed and removed.

[0088] [Other Embodiments]

[0089] The disposable diaper of the present invention is not limited to the foregoing embodiments, but includes, for example, variations that can be understood from the embodiments and variations that do not change the essence of the present invention.

[0090] For example, the disposable diaper of the present invention is not limited to disposable diapers provided with the target band 9. The target band 9 may be omitted, and the fastening part 8 may be attached to or detached from the outer sheet 6 constituting the outer surface at the front part F and the front transition part FM of the main body 2.

[0091] The target 10 can be printed on the outer sheet 6 constituting the outer surface of the main body 2 at the front part F and the front transition part FM, without the target strip 9. Alternatively, a transparent target strip can be provided on the target 10 printed on the outer sheet 6. Alternatively, the target 10 may not be present.

[0092] The set of graphic markers 10 is not limited to squares; it can be circles, rhombuses, or other shapes. Furthermore, it is not limited to the case where three columns are set starting from the left and right center lines C1 of the main body 2; it can be four or five columns.

[0093] The lines, the marks, the dots, and the patterns can be printed on the outer sheet 6 that constitutes the outer surface of the main body 2.

[0094] The disposable diaper of the present invention may not have the outer sheet 6, and the backing sheet 5 can also serve as the outer sheet. In this case, the backing sheet 5 is preferably made of a non-woven fabric or the like that is impermeable to liquid and can hold the fastening part 8 in place. The outer surface of the backing sheet 5 may be printed with the target 10 that assists in determining the mounting and dismounting position of the fastening part 8, or the target strip 9 with the target 10 printed on it may be fixed thereon.

[0095] The rear telescopic material 13 can be directly disposed in the width direction near the rear edge 2B of the rear part B of the main body 2, without the telescopic material 14 for the wing and the wing.

[0096] The left and right guide lines 17 and 18 shall at least have a portion that contacts the root of the wearer's thigh, i.e., a left and right straight portion 17b and 18b extending along the length direction at the position where it overlaps with the left and right inner elastic materials 12L and 12R located in the middle part M, and a portion that contacts the wearer's buttocks, i.e., a left and right downwardly inclined portion 17c and 18c extending obliquely from the position where it overlaps with the left and right outer elastic materials 11L and 11R located in the rear transition part BM to the rear end of the left and right straight portions 17b and 18b. Thus, it is easy to achieve that the portions of the rear transition part BM and the rear part B of the main body 2, which are equipped with the outer elastic materials 11L and 11R, the inner elastic materials 12L and 12R, and the rear elastic material 13, fit along the wearer's rounded buttocks, and that the inner side of this portion has an expansion structure 16 with an excrement collection space between it and the buttocks.

[0097] The left and right guide lines 17 and 18 may not extend obliquely from the part that contacts the wearer's groin, i.e., from the position where they overlap with the left and right outer elastic materials 11L and 11R located in the front transition portion FM, to the left and right upwardly inclined portions 17a and 18a at the front end of the left and right straight portions 17b and 18b. However, by further including the left and right upwardly inclined portions 17a and 18a, it is easier and more reliable to achieve that the portions of the rear transition portion BM and the rear portion B of the main body 2, in which the outer elastic materials 11L and 11R, the inner elastic materials 12L and 12R, and the rear elastic material 13 are disposed, fit along the wearer's rounded buttocks, and that the expansion structure 16, which has an excrement storage space between the buttocks and the inner side of the portion, is provided.

[0098] The disposable diaper of the present invention may not have the left and right center points 19L and 19R. However, when the center points 19L and 19R are present, in the method of wearing the disposable diaper, when the straight portions 17b and 18b of the left and right guide lines 17 and 18 come into contact along the boundary between the wearer's thigh and crotch, i.e., the root of the thigh, the straight portions 17b and 18b can be easily and correctly identified by the left and right center points 19L and 19R.

[0099] The disposable diaper of the present invention may be without the center line 19, the set of graphic marks 10, the reference marks 10L and 10R, or the pattern 22.

[0100] The disposable diaper of the present invention may not have the left and right upright sheets 20L and 20R and the upright stretchable materials 21L and 21R. For example, a disposable diaper without the aforementioned left and right upright sheets 20L and 20R and the upright stretchable materials 21L and 21R is suitable for use by wearers with low urine volume or for those who wish to manufacture a simple and inexpensive structure.

[0101] In the disposable diaper of the present invention, the absorbent body 3 may not have the two constricted necks 3d, 3e, 3f, and 3g on each side, nor the left and right bulges 3L and 3R located between the constricted necks. In addition, the left and right inner elastic materials 12L and 12R may not be disposed near the base of the left and right bulges 3L and 3R.

[0102] Industrial availability

[0103] This invention enables the provision of a belt-type disposable diaper that provides an excellent fit when worn and has sufficient capacity to store excrement so as to prevent excrement leakage.

[0104] In addition, the present invention can be used to provide a belt-type disposable diaper that is easy to wear properly without causing excrement leakage.

[0105] Symbol Explanation

[0106] 1. Disposable diapers;

[0107] 2. Main body;

[0108] 2F···Tip edge;

[0109] 2B...rear edge;

[0110] 2L···Left side edge;

[0111] 2R···Right edge;

[0112] 3. Absorber;

[0113] 3d and 3f... left side of the neck retraction;

[0114] 3e and 3g... right-side neck retraction;

[0115] 3L and 3R... bulge section;

[0116] 4. Top film;

[0117] 5. Film negatives;

[0118] 6···Exterior sheets;

[0119] 7 (7L1, 7R1, 7L2, 7R2)... belt;

[0120] 8 (8L1, 8R1, 8L2, 8R2) ... Fastening parts;

[0121] 9. Target zone;

[0122] 10. Target (a set of graphic markers);

[0123] 10L and 10R... reference markings;

[0124] 11L and 11R... outer expansion joint material;

[0125] 12L and 12R...inner expansion material;

[0126] 13. Rear end expansion material;

[0127] 14. Expandable material for the wings;

[0128] 15. Wings;

[0129] 16. Expansion structure;

[0130] Guide lines 17 and 18...

[0131] The upper sloping portions of 17a and 18a...

[0132] 17b and 18b...the straight lines;

[0133] 17c and 18c... downward sloping portion;

[0134] 19. Centerline;

[0135] 19L and 19R... center point;

[0136] 20L and 20R... upright sheets;

[0137] 20L2 and 20R2... free ends;

[0138] 21L and 21R... use telescopic material for upright erection;

[0139] 22. Pattern;

[0140] F···Front part;

[0141] FM...Pre-transition section;

[0142] M···middle section;

[0143] BM... post-transition section;

[0144] B...rear part;

[0145] C1···Left and right center lines;

[0146] H1...the line perpendicular to the left and right center lines

Claims

1. A disposable diaper, wherein, have: The absorber is enclosed in multiple sheets. The main body has an overall rectangular shape in which the width of the middle portion narrows in the length direction. It has a front portion as one end in the length direction and a rear portion as the other end, which is longer than the front portion. A front transition portion from the front portion to the middle portion and a rear transition portion from the rear portion to the middle portion narrow in width as they approach the middle portion. A band that protrudes outward from the left and right side edges of the rear part of the body; A fastening part is provided at the protruding end of the belt, which can be attached to and detached relative to the outer surface of the front part or the front transition part of the main body. An outer stretchable material is made of a set of filamentous stretchable materials on the left and right sides. The outer stretchable material is arranged along the left and right side edges in the length direction at the middle part of the main body, and is arranged obliquely along the left and right side edges at the rear transition part. It is arranged along the left and right side edges in the length direction at the rear part except for the rear end, and is arranged obliquely toward the left and right center lines at the rear end. An inner stretchable material, composed of a set of filamentous stretchable materials, is configured to be closer to the left and right center lines than the outer stretchable materials on the left and right sides. The inner stretchable material is disposed in the length direction away from the outer stretchable material at the middle part of the main body. At the rear transition part, it is inclined to approach the outer stretchable material as it moves toward the rear part. At the rear part, except for the rear end, it is disposed along the length direction of the outer stretchable material. At the rear end, it is inclined to the left and right center lines along the outer stretchable material. A rear telescopic material, the rear telescopic material being disposed in the width direction such that it connects the left and right inner telescopic materials near the rear rear edge of the main body; and Along the left and right guide lines that contact the wearer's groin, the root of the thigh, and the buttocks, these guide lines are visible on the outer surface of the front transition section, the middle section, and the rear transition section of the main body. The portion of the left and right guide lines that contacts the root of the wearer's thigh is a straight section extending along the length direction at the position where it overlaps with the left and right inner elastic material located in the middle. The portion of the left and right guide lines that contacts the wearer's buttocks is a downwardly sloping portion extending from the position where it overlaps with the left and right outer stretchable material at the rear transition section to the rear end of the left and right straight portion. In the rear transition portion and the rear portion of the main body, the outer stretchable material, the inner stretchable material and the rear stretchable material are arranged in a generally arc shape to fit along the wearer's buttocks when worn, and the inner side of the portion has an expansion structure that has an excrement storage space between it and the buttocks.

2. The disposable diaper according to claim 1, characterized in that, The portion of the left and right guide lines that contacts the wearer's groin is the left and right upward sloping portion extending obliquely from the position where it overlaps with the left and right outer stretchable material at the front transition section to the front end of the left and right straight portion.

3. The disposable diaper according to claim 1, characterized in that, The center point of the guide lines indicating the left and right sides, along the central part of the wearer's thigh root contact area, is visible on the outer surface of the body.

4. The disposable diaper according to claim 1, characterized in that, The center line, which is positioned on the left and right center lines of the main body, is visible on the outer surface of the main body.

5. The disposable diaper according to claim 1, characterized in that, Left and right reference marks, which serve as the target for the installation position of the fastener and are symmetrically arranged along the left and right center lines, are visible on the outer surface of the main body.

6. The disposable diaper according to claim 1, characterized in that, A set of graphic markings, symmetrically arranged or regularly formed with lines perpendicular to the left and right center lines sandwiched between the front of the main body, is visible on the outer surface of the main body.

7. The disposable diaper according to claim 1, characterized in that, The pattern extending from the middle to the rear of the main body is visible only on the outer surface of the rear, within the area surrounded by the left and right inner stretchable materials.

8. The disposable diaper according to claim 1, characterized in that, The fastener can be attached to or detached from the target strip provided on the outer surface at the front or front transition portion of the main body.

9. The disposable diaper according to claim 1, characterized in that, The disposable diaper also has protective wings, the base of which is fixed to the vicinity of the rear end edge of the main body, and elastic material for the protective wings is arranged at the free end in the left-right direction. The rear telescopic material is located inside the base end of the wing.

10. The disposable diaper according to claim 1, characterized in that, The disposable diaper also includes: left and right upright sheets for standing upright along the lines of the left and right side edges in the middle part of the main body, and left and right upright stretchable materials disposed along the free ends of the left and right upright sheets.

11. The disposable diaper according to claim 1, characterized in that, The absorber has two constricted necks on each side and two bulges on the left and right sides located between the constricted necks.

12. The disposable diaper according to claim 1, characterized in that, The absorber has two constricted necks on each side and two bulges located between the constricted necks on the left and right sides. The left and right inner telescopic materials are disposed near the base of the left and right bulges.

Images