Pet diapers

Abstract

To provide a pet diaper capable of suppressing urine leakage.SOLUTION: A pet diaper comprises: an absorbent body having a width direction disposed along a waist direction of a pet and a longitudinal direction for connecting from a ventral side to a dorsal side of the pet and including an absorbent core having water absorption; and a pair of fastening tabs extending outward from both edges in the width direction of the absorbent body. The absorbent body includes a tail hole formed therein for passing a tail of the pet. The absorbent body includes: a central part on which the absorbent core is disposed; and a pair of side parts projecting outward in the width direction from the edges of the absorbent core. The maximum width in the width direction of the absorbent core is larger than the maximum width in the width direction of each of the pair of side parts, and a width of at least a part in the width direction of an area located between the pair of fastening tabs out of the absorbent core is narrowed toward the tail hole.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to pet diapers. [Background technology]

[0002] Pet diapers for pets such as dogs and cats are known. For example, Patent Documents 1 and 2 listed below disclose pet diapers comprising a diaper main body including an absorbent core, a pair of fastening tabs extending outward in the width direction from both side edges of the diaper main body, and a target portion for engaging with the pair of fastening tabs. The diaper main body includes a central portion in which the absorbent core is disposed and a pair of side portions extending outward in the width direction from the side edges of the absorbent core. A tail hole for passing the pet's tail is formed in the diaper main body between the absorbent core and the target portion. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-85906 [Patent Document 2] Patent No. 4490080 Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there has been an increasing demand for diapers for small animals such as puppies, small dogs, and cats. Because small animals have short waists, diapers for these types of small animals generally have narrow side widths. If the side width is narrower than the width of the absorbent core, the absorbent core will protrude to the sides, which may cause the pet's legs to come into contact with the absorbent core when walking. When the pet's legs come into contact with the absorbent core, the pet diaper may slip, potentially causing urine leakage. On the other hand, if the width of the absorbent core is narrowed to avoid interference between the pet's legs and the absorbent core, the urine absorption performance will decrease, making urine leakage more likely.

[0005] Therefore, an object of the present disclosure is to provide a pet diaper that can suppress urine leakage. [Means for solving the problem]

[0006] One embodiment of a pet diaper comprises an absorbent body having a width direction aligned with the pet's waist and a length direction connecting the pet's belly side to its dorsal side, the absorbent body including an absorbent core with water absorption properties, and a pair of fastening tabs extending outward from both widthwise edges of the absorbent body. A tail hole is formed in the absorbent body through which the pet's tail passes. The absorbent body includes a central portion where the absorbent core is located, and a pair of side portions extending outward in the width direction from the edge of the absorbent core. The maximum width of the absorbent core in the width direction is greater than the maximum width of each of the pair of side portions, and the width of at least a portion of the region of the absorbent core located between the pair of fastening tabs narrows as it approaches the tail hole.

[0007] In this pet diaper, the maximum width of the absorbent core in the width direction is greater than the maximum width of each of the pair of side portions, allowing the absorbent core to adequately absorb urine. Furthermore, the width of at least a portion of the absorbent core located between the pair of fastening tabs narrows toward the tail hole, making it less likely for the pet's legs to come into contact with the absorbent core when walking. This reduces slippage of the pet diaper and reduces urine leakage.

[0008] In one embodiment, the maximum width of the absorbent main body in the width direction may be greater than half the maximum length of the absorbent main body in the longitudinal direction. Since small animals such as puppies often have distended abdomens, the fit of the pet diaper to small animals can be improved by making the maximum width of the absorbent main body in the width direction relatively large.

[0009] In one embodiment, the absorbent core includes a ventral end portion located on the ventral side, a dorsal end portion located on the dorsal side, and a constricted portion located between the ventral end portion and the dorsal end portion and having a width in the width direction smaller than the width of the ventral end portion and the dorsal end portion, and the longitudinal length of the constricted portion may be 80% to 90% of the total longitudinal length of the absorbent core. In this embodiment, the length of the relatively narrow constricted portion accounts for 80% to 90% of the total longitudinal length of the absorbent core, making it less likely for the pet's legs to interfere with the absorbent core when walking. Meanwhile, the ventral end portion and the dorsal end portion of the absorbent core have relatively large widths, which can prevent urine leakage from the longitudinal ends of the absorbent core.

[0010] In one embodiment, the boundary between the back end and the constricted portion may be located on the back side of the center line of the absorbent body in the longitudinal direction. By locating the boundary between the back end and the constricted portion on the back side of the center line of the absorbent body in the longitudinal direction, the constricted portion is located between the crotch of the pet, making it easier to put on the pet diaper.

[0011] In one embodiment, the pet diaper further includes a pair of longitudinally extending elastic members fixed to the absorbent main body in a longitudinally stretched state, wherein the width of the absorbent core in the width direction is greater than the distance between the pair of elastic members in the width direction, and the minimum width of the absorbent core may be the same as or greater than the distance between the pair of elastic members in the width direction. By increasing the width of the region located between the pair of fastening tabs, urine leakage from the ventral end of the absorbent core can be suppressed. Meanwhile, by reducing the minimum width of the absorbent core, the pet diaper can be made easier to put on a pet.

[0012] In one embodiment, when the absorbent core is divided into three equal regions in the longitudinal direction, the regions are designated as a dorsal region, an intermediate region, and a ventral region in order of proximity to the tail hole, and the area of ​​the dorsal region as viewed from the skin side of the pet may be larger than the area of ​​the ventral region as viewed from the skin side. By increasing the area of ​​the dorsal region, urine can be absorbed more effectively in the dorsal region, making it less likely that urine will leak from the tail hole.

[0013] In one embodiment, the area of ​​the middle region may be smaller than the areas of the dorsal region and the ventral region when viewed from the skin-facing side. By reducing the area of ​​the middle region, it becomes easier to put the pet diaper on a pet.

[0014] In one embodiment, the width of the absorbent core in the width direction may be smallest in the back region, which is located near the crotch of a pet, making the width of the absorbent core smallest in the back region makes it easier to put the pet diaper on a pet.

[0015] In one embodiment, the width of the absorbent core in the width direction may be smallest at a position closer to the tail hole than the longitudinal center line of the absorbent core. By minimizing the width of the absorbent core at a position closer to the tail hole than the longitudinal center line of the absorbent core, the smallest width part of the absorbent core will be located near the crotch of the pet, making it easier to put the pet diaper on the pet.

[0016] In one embodiment, the pet diaper further includes a target portion that is positioned behind the pair of fastening tabs and engages with the pair of fastening tabs, and the width of the pair of fastening tabs in the longitudinal direction may be ¾ or less of the width of the target portion in the longitudinal direction. The width of the pair of fastening tabs in the longitudinal direction may also be ½ or less of the width of the target portion in the longitudinal direction. By making the width of the pair of fastening tabs ¾ or less or ½ or less of the width of the target portion, the pair of fastening tabs can be connected to the target portion while overlapping in the direction of the pet's waist. This allows the waist length of the pet diaper to be shortened, making the pet diaper fit even small animals with small waists.

[0017] In one embodiment, the back edge of the absorbent core may be positioned more ventral than the tail hole. By positioning the back edge of the absorbent core more ventral than the tail hole, areas where the absorbent core is not positioned are formed on both sides of the width of the tail hole and on the back side. These areas have low rigidity and can flexibly deform to fit the pet's buttocks. This improves the fit of the pet diaper, making it less likely that a gap will form between the edge of the tail hole and the pet's buttocks, thereby preventing urine leakage from such gaps. [Effects of the Invention]

[0018] According to various aspects and embodiments of the present invention, urine leakage can be reduced. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a plan view showing a pet diaper according to one embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. [Figure 3] FIG. 10 is a diagram showing the state in which the pet diaper is worn. [Figure 4] FIG. 2 is a plan view of an absorbent core. [Figure 5] 10A to 10C are diagrams showing examples of fastening methods for fastening the fastening tabs. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following description, the same or equivalent elements will be denoted by the same reference numerals, and redundant description will not be repeated. The dimensional proportions of the drawings do not necessarily correspond to those in the description.

[0021] FIG. 1 is a plan view of a pet diaper according to an embodiment, viewed from the skin-facing side Z1. FIG. 2 is a cross-sectional view schematically showing the pet diaper taken along line AA in FIG. 1. FIG. 1 shows the pet diaper 1 in a stretched state, in which the pet diaper 1 has been stretched to a state where no wrinkles are formed. In the following explanation, unless otherwise specified, the positional relationship in the stretched state will be described. In addition, in the cross-sectional view shown in FIG. 2, for the sake of convenience, each component is shown spaced apart in the thickness direction Z, but in an actual product, they are in contact with each other in the thickness direction Z.

[0022] The pet diaper 1 is a diaper for pets. In this specification, the term "pet" broadly encompasses vertebrates and invertebrates, typically including pets such as dogs, cats, rabbits, and hamsters. The pet diaper 1 of one embodiment is particularly suitable for use as a diaper for small animals such as puppies, small dogs, and cats. As shown in FIG. 1 , the pet diaper 1 extends in a width direction X along the pet's waistline and a longitudinal direction Y perpendicular to the width direction X. The longitudinal direction Y extends from the pet's ventral side to its dorsal side. The thickness direction Z is perpendicular to the width direction X and the longitudinal direction Y and includes a skin-facing side Z1 that faces the pet's skin when worn and a non-skin-facing side Z2 that faces away from the pet's skin when worn. As shown in FIG. 3 , the pet diaper 1 is worn to cover the pet's ventral side, through the crotch area, and to its dorsal side.

[0023] The pet diaper 1 has an absorbent body 2. The absorbent body 2 absorbs urine excreted by a pet wearing the pet diaper 1. The absorbent body 2 includes a top sheet 10, a back sheet 20, and an absorbent core 30. The top sheet 10 forms the surface of the absorbent body 2 that comes into contact with the pet and is arranged on the skin-facing side Z1. The top sheet 10 is liquid permeable, allowing the pet's urine to pass through to the absorbent core 30. The top sheet 10 is located in the center in the width direction X and includes a center sheet 11 that covers the absorbent core 30, and side sheets 12 that cover both sides of the center sheet 11 in the width direction X.

[0024] As shown in Fig. 2, the inner portions of the side sheets 12 in the width direction X are folded back toward the non-skin-facing side Z2. The elastic members 13, stretched in the longitudinal direction Y, are arranged between the folded back side sheets 12. The side sheets 12 and the elastic members 13 form leak-proof gathers 80. The leak-proof gathers 80 are upright leak-proof gathers, and are arranged closer to the skin-facing side Z1 than the absorbent core 30. Details of the leak-proof gathers 80 will be described later.

[0025] The back sheet 20 constitutes the surface of the absorbent main body 2 that is positioned on the outside when worn, and is arranged on the non-skin-facing side Z2. The back sheet 20 includes a liquid-impermeable back film 21 and a back nonwoven fabric 22 that is positioned closer to the skin-facing side Z2 than the back film 21. The length of the back film 21 in the width direction X is formed to be shorter than the length of the back nonwoven fabric 22 in the width direction X, and the back nonwoven fabric 22 may extend beyond the back film 21 on both sides in the width direction X.

[0026] The absorbent core 30 is disposed between the top sheet 10 and the back sheet 20. The absorbent core 30 contains, for example, water-absorbing plant-derived pulp fibers and a polymeric absorbent (SAP), and absorbs pet urine. As shown in FIG. 2, the upper and lower surfaces of the absorbent core 30 may be covered with a core wrap 38. The absorbent core 30 is disposed approximately in the center of the absorbent main body 2 in the width direction X. The maximum width W1 of the absorbent core 30 in the width direction X is shorter than the maximum width W3 of the absorbent main body 2 in the width direction X.

[0027] The back edge 30R of the absorbent core 30 is located dorsally of the center line CL2 in the longitudinal direction Y of the absorbent main body 2. The ventral edge 30F of the absorbent core 30 is located dorsally of the ventral edge 2F, which will be described later. That is, the length of the absorbent core 30 in the longitudinal direction Y is shorter than the overall length L1 in the longitudinal direction Y of the absorbent main body 2. The center line CL2 is an imaginary line that is located at equal distances from the back edge 2R and the ventral edge 2F of the absorbent main body 2, which will be described later, and extends along the width direction X. That is, the center line CL2 is the portion where a crease is formed when the pet diaper 1 is folded in half in the longitudinal direction Y. When the pet diaper 1 is put on a pet, the pet's urination opening is placed against an area on the ventral side of the center line CL2 of the absorbent main body 2.

[0028] The absorbent main body 2 has a ventral edge 2F located on the ventral side in the longitudinal direction Y, and a dorsal edge 2R located on the dorsal side in the longitudinal direction Y. The ventral edge 2F is positioned on the ventral side in the direction of the pet's waist when worn, and the dorsal edge 2R is positioned on the dorsal side in the direction of the pet's waist when worn. The distance in the longitudinal direction Y between the ventral edge 2F and the dorsal edge 2R is the total length (maximum length) L1 of the absorbent main body 2. In one embodiment, the maximum width W3 of the absorbent main body 2 in the width direction X may be greater than half of the total length L1 of the absorbent main body 2 in the longitudinal direction.

[0029] The absorbent main body 2 also has a ventral region 51 located on the ventral edge 2F side, a dorsal region 52 located on the dorsal edge 2R side, and an intermediate region 53 located between the ventral region 51 and the dorsal region 52 in the longitudinal direction Y. A pair of flap portions 14 extending outward from the absorbent main body 2 in the width direction X is formed in the dorsal region 52 of the absorbent main body 2. A pair of flap portions 15 extending outward from the absorbent main body 2 in the width direction X is formed in the ventral region 51 of the absorbent main body 2. The pair of flap portions 15 define a pair of leg openings 15s for allowing the hind legs of a pet to pass through. The width between the side edges of the pair of flap portions 15 in the width direction X corresponds to the maximum width W3 of the absorbent main body 2.

[0030] A pair of fastening tabs 90 are provided on each of the pair of flap portions 15. The pair of fastening tabs 90 have a rectangular shape that is elongated in the width direction X when viewed from the skin-facing side Z1, and are arranged adjacent to the ventral edge 2F of the absorbent main body 2 in the longitudinal direction Y. The pair of fastening tabs extend outward in the width direction X from the side edge 2S of the absorbent main body 2. Each of the pair of fastening tabs 90 has a base sheet 91 joined to the flap portion 15 and a joining portion 92 provided on the base sheet 91. The joining portion 92 is arranged on the skin-facing side Z1 of the fastening tab 90. The joining portion 92 is, for example, a mechanical fastener, and is configured to be joinable to a target portion 45 formed on the non-skin-facing side Z2 of the absorbent main body 2. In one embodiment, the ventral edge 30F of the absorbent core 30 may be arranged between the pair of flap portions 15.

[0031] The target portion 45 is provided on the non-skin-facing side Z2 of the back region 52 of the absorbent main body 2. The target portion 45 is located closer to the back edge 2R than the pair of fastening tabs 90, and engages with the pair of fastening tabs 90. The absorbent main body 2 may be configured not to include the target portion 45, and the joining portions 92 of the pair of fastening tabs 90 may be directly joined to the back surface nonwoven fabric 22 of the backsheet 20.

[0032] 1, the target portion 45 has a strip-like shape extending in the width direction X. In one embodiment, the width L2 of the pair of fastening tabs 90 in the longitudinal direction Y is smaller than the width L3 of the target portion 45 in the longitudinal direction Y. For example, the width L2 of the pair of fastening tabs 90 may be ¾ or less, or ½ or less, of the width L3 of the target portion 45. The width L2 of the pair of fastening tabs 90 and the width L3 of the target portion 45 refer to the maximum width of the pair of fastening tabs 90 in the longitudinal direction Y and the maximum width of the target portion 45 in the longitudinal direction Y, respectively.

[0033] A tail hole 70 is formed in the absorbent main body 2. The tail hole 70 is a generally tongue-shaped opening formed in the absorbent main body 2, for example, by making a generally U-shaped cut that is open on the back side. As shown in FIG. 3, a pet's tail is passed through the tail hole 70. As shown in FIG. 1, the tail hole 70 is disposed in the longitudinal direction Y between the center line CL2 in the longitudinal direction Y of the absorbent main body 2 and the target portion 45. More specifically, the tail hole 70 is disposed on the back side of the back edge 30R of the absorbent core 30. Therefore, areas where the absorbent core 30 is not disposed are formed outside the tail hole 70 in the width direction X and on the back side of the tail hole 70.

[0034] The tail hole 70 is formed on the center line CL1 in the width direction X of the absorbent main body 2. The center line CL1 is an imaginary line that is positioned at equal distances from a pair of side edges 2S of the absorbent main body 2 in the width direction X and extends along the longitudinal direction Y. The shape of the tail hole 70 is not limited to a roughly tongue-like shape, and may be semicircular, rectangular, trapezoidal, polygonal, or elliptical. The tail hole 70 may also be a roughly tongue-shaped opening formed in the absorbent main body 2 by making a roughly U-shaped cut that is open on the ventral side.

[0035] The absorbent main body 2 is formed with a tongue 72. The tongue 72 is a flap-shaped member formed, for example, by making a cut 50 in the absorbent main body 2, and is composed of, for example, a part of the topsheet 10 and the backsheet 20. The tongue 72 is arranged so as to overlap the tail hole 70 when not folded back. The tongue 72 has a base end 72R connected to the back edge of the tail hole 70 and a tip end 72F located opposite the base end 72R. The base end 72R of the tongue 72 is connected to the middle region 53 of the absorbent main body 2. On the other hand, the tip end 72F is not connected to the middle region 53 of the absorbent main body 2 and is free. The tip end 72F of the tongue 72 faces toward the ventral side when the tongue 72 is not folded back (overlapping the tail hole 70).

[0036] The tongue 72 is configured to open the tail hole 70 by folding back from the base end 72R to the non-skin facing side Z2. As described above, in the embodiment shown in Figure 1, the tip 72F of the tongue 72 faces the ventral side, so when the tail is inserted into the tail hole 70 and the tongue 72 is folded back from the base end 72R to the non-skin facing side Z2, the tongue 72 abuts against the dorsal side of the tail.

[0037] The side sheets 12 are formed with leak-proof gathers 80. The leak-proof gathers 80 are arranged outside the absorbent core 30 in the width direction X, and prevent urine excreted into the absorbent core 30 from leaking in the width direction X. In one embodiment, the leak-proof gathers 80 include a pair of elastic members 13 extending in the longitudinal direction Y, standing portions 81 that stand up due to contraction of the pair of elastic members 13, horizontal fixing portions 82 that serve as standing fulcrums for the standing portions 81 in the width direction X, and vertical fixing portions 83 that serve as standing fulcrums for the standing portions 81 in the longitudinal direction Y.

[0038] The pair of elastic members 13 are provided on the inner side of the side sheet 12 in the width direction X and extend in the longitudinal direction Y. The pair of elastic members 13 are made of an elastic material such as rubber or spandex that is shrinkable in the longitudinal direction. The pair of elastic members 13 are arranged spaced apart from each other across the center line CL1 of the absorbent main body 2 in the width direction X, and are fixed to the side sheet 12 in a stretched state in the longitudinal direction Y. For example, the ventral side ends of the pair of elastic members 13 are arranged in the ventral region 51, and the dorsal side ends of the pair of elastic members 13 are arranged in the intermediate region 53.

[0039] The lateral fixing portions 82 are formed on the side sheets 12 at positions on the outside of the standing portions 81 in the width direction X, over substantially the entire area in the longitudinal direction Y of the absorbent main body 2. In other words, the lateral fixing portions 82 are arranged on the outside of the absorbent core 30 in the width direction X. The lateral fixing portions 82 are part of the side sheets 12, and are fixed to the center sheet 11. The lateral fixing portions 82 serve as standing fulcrums for the standing portions 81 in the width direction X.

[0040] The vertical fixing parts 83 are formed on the ventral side and the dorsal side of the absorbent main body 2 at positions inside the horizontal fixing parts 82 in the width direction X. The vertical fixing parts 83 are part of the side sheets 12 and are fixed to the center sheet 11. The vertical fixing parts 83 serve as standing fulcrums for the standing parts 81 in the longitudinal direction Y.

[0041] The standing portions 81 are formed between the vertical fixing portions 83 formed on the ventral side and the dorsal side of the absorbent main body 2. That is, the standing portions 81 are located inward of the horizontal fixing portions 82 in the width direction X and inward of the vertical fixing portions 83 in the longitudinal direction Y. The standing portions 81 are parts of the side sheets 12 that are not fixed to the center sheet 11. Elastic members 13 stretched in the longitudinal direction Y are connected to the standing portions 81. When the elastic members 13 contract in the longitudinal direction Y, the absorbent main body 2 deforms in the closing direction, and the standing portions 81 rise from the horizontal fixing portions 82 as starting points. In this way, the standing portions 81 rise at positions that sandwich the absorbent core 30 in the width direction X, thereby preventing urine leakage.

[0042] The pet diaper 1 may further include a pair of elastic members 40 that are stretchable in the longitudinal direction. As shown in FIG. 1 , the pair of elastic members 40 are arranged outward in the width direction X from the elastic members 13. In the embodiment shown in FIG. 1 , the ventral ends of the pair of elastic members 40 are arranged in the ventral region 51, and the dorsal ends of the pair of elastic members 40 are arranged in the dorsal region 52. The pair of elastic members 40 are made of an elastic material, such as rubber or spandex, that is stretchable in the longitudinal direction, and are arranged along the side edges 2S of the absorbent main body 2 between the topsheet 10 and the backsheet 20 of the absorbent main body 2. The pair of elastic members 40 may extend in the longitudinal direction Y while being sewn to the topsheet 10 and the backsheet 20 of the absorbent main body 2. When the pet diaper 1 is worn, the pair of elastic members 40 contract in the longitudinal direction Y, allowing the side edges 2S of the absorbent main body 2 to fit around the legs of the wearer.

[0043] As shown in FIG. 1 , the absorbent main body 2 includes a central region 24 where the absorbent core 30 is disposed, and a pair of side regions 25 that extend outward in the width direction X from the side edges 30S of the absorbent core 30. The central region 24 is a region of the absorbent main body 2 that overlaps the absorbent core 30 in the thickness direction Z. The pair of side regions 25 are regions of the absorbent main body 2 that include a pair of flap regions 15 that are disposed between the side edges 30S of the absorbent core 30 in the width direction X and the side edges 2S of the absorbent main body 2. The maximum width in the width direction X of the central region 24 coincides with the maximum width W1 of the absorbent core 30 in the X direction. The maximum width W1 of the absorbent core 30 in the width direction X is greater than the maximum width W2 of each of the pair of side regions 25 in the width direction X. The maximum width W2 of each of the pair of side regions 25 in the width direction X corresponds to, for example, the distance in the width direction X between the ventral edge 30F of the absorbent core 30 and the side edges of the flap regions 15.

[0044] The absorbent core 30 will be described in more detail below. FIG. 4 is a plan view of the absorbent core 30 according to one embodiment. As shown in FIG. 4, the ventral edge 30F of the absorbent core 30 has a width W1 in the width direction X. The ventral edge 30F of the absorbent core 30 is the widest portion of the absorbent core 30. The dorsal edge 30R of the absorbent core 30 has a width W5 in the width direction X. The width W5 of the dorsal edge 30R of the absorbent core 30 may be the same as the width W1 of the ventral edge 30F of the absorbent core 30. The width of the ventral edge 30F of the absorbent core 30, i.e., the maximum width W1 of the absorbent core 30 in the width direction X, is greater than the distance 13D between a pair of elastic members 13 in the width direction X.

[0045] As shown in FIG. 4 , the absorbent core 30 includes a ventral end 41 disposed on the ventral side, a dorsal end 42 disposed on the dorsal side, and a constricted portion 43 disposed between the ventral end 41 and the dorsal end 42. The ventral end 41 is a region including the ventral edge 30F of the absorbent core 30, and has a width W1 in the width direction X. The dorsal end 42 is a region including the dorsal edge 30R of the absorbent core 30, and has a width W5 in the width direction X. That is, the ventral end 41 and the dorsal end 42 have a constant width in the width direction X. The constricted portion 43 is a region where the width of the absorbent core 30 is narrowed. The width of the constricted portion 43 in the width direction X is smaller than the width W1 of the ventral end 41 and the width W5 of the dorsal end 42 throughout the entire region of the constricted portion 43.

[0046] The constricted portion 43 includes a narrowed portion 36 whose width is narrowest in the width direction X. The width W6 of the narrowed portion 36 is smaller than the width W1 of the ventral end 41 and the width W5 of the dorsal end 42. The width of the constricted portion 43 narrows continuously or stepwise from the boundary between the ventral end 41 and the constricted portion 43 toward the narrowed portion 36. In other words, the boundary between the ventral end 41 and the constricted portion 43 can be said to be the starting point of the constriction of the absorbent core 30. Similarly, the width of the constricted portion 43 narrows continuously or stepwise from the boundary between the dorsal end 42 and the constricted portion 43 toward the narrowed portion 36. In other words, the boundary between the dorsal end 42 and the constricted portion 43 can be said to be the starting point of the constriction of the absorbent core 30. In one embodiment, the minimum width of the absorbent core 30 in the width direction X, i.e., the width W6 of the narrowed portion 36, may be greater than the distance 13D between the pair of elastic members 13.

[0047] The narrowed portion 36 is located closer to the ventral side (the edge 30F side) than the center line CL2 in the longitudinal direction Y of the absorbent main body 2, and closer to the dorsal side (the tail hole 70 side) than the center line 30C in the longitudinal direction Y of the absorbent core 30. The center line 30C is an imaginary line that is located at equal distances from the ventral edge 30F and the dorsal edge 30R of the absorbent core 30 and extends along the width direction X. Therefore, in the longitudinal direction Y, the narrowed portion 36 is formed closer to the boundary between the dorsal end portion 42 and the constricted portion 43 than to the boundary between the ventral end portion 41 and the constricted portion 43. By forming the narrowed portion 36 at the above-mentioned position, the narrowed portion 36 can be positioned near the pet's crotch. This makes it easier to put on and take off the pet diaper 1.

[0048] As shown in FIG. 4 , the boundary between the ventral end 41 and the constricted portion 43 is located on the ventral side of the center line CL2 in the longitudinal direction Y of the absorbent main body 2. On the other hand, the boundary between the dorsal end 42 and the constricted portion 43 is located on the dorsal side of the center line CL2 in the longitudinal direction Y of the absorbent main body 2. The length of the constricted portion 43 in the longitudinal direction Y is longer than the lengths of the ventral end 41 and the dorsal end 42 in the longitudinal direction Y. The length of the ventral end 41 refers to the distance in the longitudinal direction Y between the ventral edge 30F of the absorbent core 30 and the boundary between the ventral end 41 and the constricted portion 43, and the length of the dorsal end 42 refers to the distance in the longitudinal direction Y between the dorsal edge 30R of the absorbent core 30 and the boundary between the dorsal end 42 and the constricted portion 43. Furthermore, the length of the constricted portion 43 in the longitudinal direction Y refers to the distance in the longitudinal direction Y between the boundary between the ventral end 41 and the constricted portion 43 and the boundary between the dorsal end 42 and the constricted portion 43. For example, the length of the constricted portion 43 may be 80% or more and 90% or less of the total length in the longitudinal direction Y of the absorbent core 30 (i.e., the distance in the longitudinal direction Y between the ventral end 30F and the dorsal end 30R of the absorbent core 30).

[0049] Furthermore, the length of the dorsal end portion 42 in the longitudinal direction Y may be longer than the length of the ventral end portion 41 in the longitudinal direction Y. As a result, as shown in FIG. 4 , when the absorbent core 30 is divided into three equal regions in the longitudinal direction Y, namely, the dorsal region 31, the intermediate region 32, and the ventral region 33 in order of proximity to the tail hole 70, the area of ​​the dorsal region 31 as viewed from the skin side Z1 may be larger than the area of ​​the ventral region 33 as viewed from the skin side Z1. By increasing the area of ​​the dorsal region 31, urine can be effectively absorbed in the dorsal region 31, thereby suppressing urine leakage through the tail hole 70. Furthermore, the area of ​​the intermediate region 32 as viewed from the skin side Z1 may be smaller than the areas of the dorsal region 31 and the ventral region 33 as viewed from the skin side Z1. By reducing the area of ​​the intermediate region 32, the pet diaper 1 can be easily put on and taken off.

[0050] The narrowed portion 36 of the absorbent core 30 may be disposed in the back region 31. That is, the width of the absorbent core 30 in the width direction X is smallest in the back region 31.

[0051] As shown in Figures 1 and 4, the absorbent core 30 includes a region (hereinafter referred to as "tab region 35") located between a pair of fastening tabs 90. The tab region 35 is arranged to straddle the boundary between the ventral end 41 and the constricted portion 43. Therefore, a portion of the ventral side of the tab region 35 has a constant width W1, and a portion of the dorsal side of the tab region 35 has a width smaller than the width W1. In other words, the width of the portion of the dorsal side of the tab region 35 in the width direction X narrows as it approaches the tail hole 70 (dorsal side).

[0052] FIG. 3 shows the pet diaper 1 on a pet. When putting the pet diaper 1 on a pet, first, the pet's tail is passed through the tail hole 70 and extended to the non-skin-facing side Z2 of the diaper. At this time, the tongue 72 is folded back to the non-skin-facing side Z2 so that the tongue 72 is positioned on the back side of the tail. Next, the ventral edge 2F of the absorbent main body 2 is placed against the pet's belly. Then, the area around the center line CL2 of the absorbent main body 2 in the longitudinal direction Y is placed against the pet's urination opening, while the dorsal edge 2R of the absorbent main body 2 is placed against the pet's back. Next, the pair of fastening tabs 90 are pulled toward the pet's back in the waist direction, and the pair of fastening tabs 90 are fastened to the outer surface of the target portion 45 of the absorbent main body 2. As a result, the pet diaper 1 is put on the pet so as to cover the pet's belly, back, and crotch, as shown in FIG. 3.

[0053] At this time, if the pet's waist circumference is larger than the width W4 between the ends of the pair of fastening tabs 90 (see FIG. 1), the pair of fastening tabs are coupled to the target portion 45 so as not to overlap each other in the pet's waist circumference direction, as shown in FIG. 5(a). On the other hand, if the pet's waist circumference is smaller than the width W4 between the ends of the pair of fastening tabs 90, the pair of fastening tabs 90 are coupled to the target portion 45 in a state where they overlap each other in the pet's waist circumference direction, as shown in FIG. 5(b). By arranging the pair of fastening tabs 90 so that they overlap each other in the pet's waist circumference direction, the length of the waist circumference of the pet diaper is shortened, so that the pet diaper can fit even small animals with very small waist circumferences.

[0054] If the width W2 of the pair of side portions 25 of the pet diaper 1 is smaller than the maximum width W1 of the absorbent core 30, when the pet diaper 1 is put on a pet, the absorbent core 30 will protrude laterally, which may cause the pet's legs to come into contact with the absorbent core 30 while walking. In contrast, in the pet diaper 1 described above, the width of a portion of the back side of the tab region 35 in the width direction X narrows as it approaches the tail hole 70, making it less likely for the pet's legs to come into contact with the absorbent core 30. Meanwhile, when the pair of fastening tabs 90 are joined to the target portion 45, the ventral end 41 of the absorbent core 30 is in close contact with the pet's abdomen, making it less likely for the absorbent core 30 to come into contact with the pet's legs. In the pet diaper 1, the width of the ventral end 41 is the same as the maximum width W1 of the absorbent main body 2, which prevents the pet's legs from interfering with the absorbent core 30 and allows the ventral end 41 to effectively absorb the pet's urine. This prevents urine leakage from the pet diaper 1.

[0055] Furthermore, in the pet diaper 1, the width L2 of the pair of fastening tabs 90 in the longitudinal direction Y is less than or equal to three-quarters of the width L3 of the target portion in the longitudinal direction Y. Therefore, even when the pair of fastening tabs 90 are fastened to the target portion 45 while overlapping in the pet's waist direction as shown in FIG. 5(b), most or all of the pair of fastening tabs 90 can be engaged with the target portion 45. This prevents the pair of fastening tabs 90 from coming off the target portion 45, allowing the pet diaper 1 to fit a small pet. This prevents the pet diaper 1 from shifting, particularly backward shifting, which occurs when the ventral edge 2F of the absorbent main body 2 moves toward the pet's crotch area.

[0056] 4, the width of the tab region 35 of the absorbent core 30 is greater than the distance 13D between the pair of elastic members 13 in the width direction X, and therefore the rigidity of the tab region 35 makes it easier for the standing portions 81 of the leak-proof gathers 80 to stand up. Furthermore, the minimum width W6 of the absorbent core is equal to or less than the distance 13D between the pair of elastic members 13, and therefore the pet diaper 1 can be easily put on even small animals with close-spaced hind legs.

[0057] Although various embodiments of pet diapers have been described above, the present invention is not limited to the above-described embodiments and various modifications can be made without departing from the spirit of the invention. In other words, it should be noted that the above-described embodiments are for illustrative purposes only and do not limit the scope of the present invention. The various embodiments described above can be combined within a consistent range.

[0058] 4, the width of part of the tab region 35 in the width direction X narrows as it approaches the tail hole 70, but in one embodiment, the width of the tab region 35 may narrow continuously or stepwise over the entire longitudinal area of ​​the tab region 35 as it approaches the tail hole 70. In addition, the ventral edge 30F of the absorbent core 30 may be located closer to the ventral side than the pair of flap portions 15. [Explanation of symbols]

[0059] 1...pet diaper, 13...elastic member, 24...central portion, 25...side portion, 30...absorbent core, 31...dorsal region, 32...intermediate region, 33...ventral region, 41...ventral end, 42...dorsal end, 43...constricted portion, 45...target portion, 70...tail hole, 90...fastening tab.

Claims

1. an absorbent body having a width direction aligned with the waist direction of the pet and a length direction connecting the belly side to the back side of the pet, and including an absorbent core having water absorption properties; a pair of fastening tabs extending outward from both widthwise edges of the absorbent main body; Equipped with The absorbent body has a tail hole through which the pet's tail passes, The absorbent main body includes a central portion in which the absorbent core is disposed, and a pair of side portions extending outward in the width direction from the end edges of the absorbent core, the maximum width of the absorbent core in the width direction is greater than the maximum width of each of the pair of side portions in the width direction; The absorbent core includes a ventral end portion having a constant width in the width direction, a dorsal end portion disposed on the dorsal side of the ventral end portion and having a constant width in the width direction, and a constricted portion disposed between the ventral end portion and the dorsal end portion and having a shape constricted inward in the width direction, the constricted portion includes a narrowed portion that is narrowest in the width direction, and when the absorbent core is divided into three equal regions in the longitudinal direction, the regions are designated as a dorsal region, an intermediate region, and a ventral region in order of proximity to the tail hole, the narrowed portion is located in the dorsal region, The narrowed portion is located on the abdominal side of the center line of the absorbent main body in the longitudinal direction. , pet diapers.

2. The pet diaper according to claim 1 , wherein the maximum width of the absorbent body in the width direction is greater than half the maximum length of the absorbent body in the longitudinal direction.

3. A pet diaper as described in claim 1 or 2, wherein the longitudinal length of the constricted portion is 80% or more and 90% or less of the total longitudinal length of the absorbent core.

4. The pet diaper according to claim 3 , wherein a boundary between the rear end portion and the constricted portion is located on the rear side of a center line of the absorbent main body in the longitudinal direction.

5. The absorbent body further includes a pair of elastic members fixed to the absorbent body in a state stretched in the longitudinal direction and extending in the longitudinal direction, a width of the abdominal end portion of the absorbent core in the width direction is greater than a distance between the pair of elastic members in the width direction; A pet diaper as described in any one of claims 1 to 4, wherein the minimum width of the absorbent core is the same as or greater than the distance between the pair of elastic members in the width direction.

6. A pet diaper described in any one of claims 1 to 5, wherein the area of ​​the dorsal region as viewed from the skin side of the pet is larger than the area of ​​the ventral region as viewed from the skin side.

7. The pet diaper according to claim 6, wherein an area of ​​the middle region is smaller than an area of ​​the back region and an area of ​​the ventral region when viewed from the skin-facing side.

8. a target portion disposed on the rear side of the pair of fastening tabs and engaging with the pair of fastening tabs; The pet diaper according to any one of claims 1 to 7, wherein the width of the pair of fastening tabs in the longitudinal direction is ¾ or less of the width of the target portion in the longitudinal direction.

9. a target portion disposed on the rear side of the pair of fastening tabs and engaging with the pair of fastening tabs; The pet diaper according to any one of claims 1 to 8, wherein the width of the pair of fastening tabs in the longitudinal direction is equal to or less than half the width of the target portion in the longitudinal direction.

10. The pet diaper according to any one of claims 1 to 9, wherein the back edge of the absorbent core is positioned closer to the ventral side than the tail hole.

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