Pet diaper and manufacturing method thereof

Abstract

To provide a diaper for a pet in which feces are hardly adhered to a pet.SOLUTION: A diaper for a pet of one embodiment has: a main body part which extends in a lateral direction arranged along a waist direction of a pet, and a vertical direction coupling a belly part and a back side of the pet and orthogonal to the lateral direction, and which includes an absorbent core. The main body part has a tail hole through which feces of the pet can pass. The diaper for a pet comprises further: a stretchable member which is fixed to the main body part in a stretched state in the vertical direction, and extends in the vertical direction, in at least, between an end edge on the belly side of the tail hole and an end edge of a back side of the absorbent core.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to pet diapers and methods for manufacturing pet diapers. [Background technology]

[0002] Patent Document 1 discloses a pet diaper to be worn by pets such as dogs and cats. The pet diaper in Patent Document 1 includes a diaper body with a tail hole formed in the buttocks covering the pet's buttocks to allow the passage of feces excreted by the pet, and a feces bag to collect the feces that has passed through the tail hole. This pet diaper absorbs urine with the water absorbent of the diaper body and collects the feces in the feces bag, thereby preventing the feces from sticking to the pet's hair, etc. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6232688 Summary of the Invention [Problem to be solved by the invention]

[0004] The tail hole formed in the pet diaper of Patent Document 1 needs to be maintained in a position facing the pet's anus in order to allow feces to pass through. However, when the pet is active, for example during a walk, the pet diaper may shift and the position of the tail hole may shift. In particular, if a gap is created between the edge of the tail hole and the pet's buttocks due to the shifting of the pet diaper, feces may enter the pet diaper through the gap and adhere to the pet.

[0005] Therefore, an object of the present invention is to provide a pet diaper that prevents feces from adhering to the pet. [Means for solving the problem]

[0006] A pet diaper according to one embodiment has a main body portion including an absorbent core, the main body portion extending in a horizontal direction aligned with the pet's waistline and a vertical direction perpendicular to the horizontal direction and connecting the pet's ventral side to its dorsal side. The main body portion has a tail hole through which the pet's feces can pass. The pet diaper further includes an elastic member fixed to the main body portion in a vertically stretched state and extending in the vertical direction at least between the ventral edge of the tail hole and the dorsal edge of the absorbent core.

[0007] In the pet diaper of the above embodiment, the elastic member extends at least between the ventral edge of the tail hole and the dorsal edge of the absorbent core, so that the region between the tail hole and the absorbent core of the main body is pulled toward the absorbent core by the elastic member and pressed against the pet's buttocks. This improves the fit of the pet diaper and reduces the likelihood of a gap occurring between the edge of the tail hole and the pet's buttocks. This makes it difficult for feces to get inside the pet diaper and for feces to stick to the pet.

[0008] In one embodiment, the main body further includes a tongue that is arranged to overlap the tail hole, the tongue having a base end connected to the edge of the tail hole and a tip end opposite the base end, and when folded back from the base end, the tail hole is opened, and the tip end of the tongue may be directed ventrally or laterally when the tongue is not folded back. In this embodiment, since the tip end of the tongue is directed ventrally or laterally, the tongue is prevented from being positioned below the pet's anus when folded back from the base end. Therefore, feces are prevented from adhering to the pet diaper during excretion.

[0009] In one embodiment, the tail hole may be formed by cutting out a part of the main body. In this embodiment, the tongue is prevented from being positioned below the pet's anus, so that feces are prevented from adhering to the pet diaper during excretion.

[0010] In one embodiment, the back edge of the absorbent core may be located more ventral than the ventral edge of the tail hole. In this embodiment, areas where the absorbent core is not located are formed on both lateral sides and the back side of the tail hole. These areas have a lower rigidity due to the absorbent core, so they flexibly deform along the pet's buttocks. This further improves the fit of the pet diaper, and makes it less likely that a gap will form between the edge of the tail hole and the pet's buttocks.

[0011] In one embodiment, the width of the tail hole opening in the lateral direction may be continuously narrowed toward the ventral side. Since the width of the anus during defecation is larger than the width of the stool, narrowing the width of the tail hole opening in the lateral direction toward the ventral side allows the stool to pass through while reducing the opening area of ​​the tail hole. Also, by reducing the opening area of ​​the tail hole, urine leakage from the tail hole can be suppressed.

[0012] In one embodiment, the elastic member may extend beyond the center of the tail hole in the longitudinal direction, so that the contraction of the elastic member causes the outer region of the body portion in the lateral direction of the tail hole to be pressed against the pet's buttocks, thereby further improving the fit of the pet diaper.

[0013] In one embodiment, the elastic member may extend beyond the rear edge of the tail hole in the longitudinal direction, so that the rear area of ​​the tail hole of the main body is pressed against the pet's buttocks by contraction of the elastic member, thereby further improving the fit of the pet diaper.

[0014] In one embodiment, when a virtual tail hole is set at a position that is symmetrical to the tail hole with respect to the center line of the main body in the vertical direction, the elastic member may extend beyond the ventral edge of the virtual tail hole. In this embodiment, since the elastic member extends beyond the center line to the ventral side, the ventral area of ​​the main body is pressed against the pet's abdomen by contraction of the elastic member. Therefore, the fit of the pet diaper can be further improved.

[0015] In one embodiment, the diaper further includes a pair of fastening tabs that are provided on the ventral side of the tail hole and extend outward from the side edges of the main body in the lateral direction, and a target portion that is provided on the dorsal side of the tail hole and engages with the pair of fastening tabs, and the elastic member may extend beyond the dorsal edges of the pair of fastening tabs in the longitudinal direction. In this embodiment, since the elastic member extends beyond the dorsal edges of the pair of fastening tabs, when the pair of fastening tabs are pulled up to engage with the target portions, the elastic member extends ventrally, and the main body is pressed against the pet by the contraction force of the elastic member. Therefore, the fit of the pet diaper can be further improved.

[0016] In one embodiment, the elastic member may extend beyond the ventral edge of the target portion in the vertical direction. Generally, pets such as dogs and cats shove their buttocks and curl their backs when defecating. In this embodiment, since the elastic member extends beyond the ventral edge of the target portion, when the pet curls its back when defecating, tension acts on the back region of the main body portion, causing the elastic member to stretch, and the contraction force of the elastic member presses the main body portion against the pet. Therefore, the fit of the pet diaper can be further improved.

[0017] The pet diaper of one embodiment further includes a waist gather that is arranged on the ventral side of the rear edge of the pair of fastening tabs and stretches laterally, and the stretch member may extend beyond the rear edge of the waist gather. In this embodiment, the stretch member extends beyond the rear edge of the waist gather, so that the stretch member is stretched toward the ventral side by contraction of the waist gather. As a result, the contraction force of the stretch member is increased, and the pet diaper is pressed against the pet, improving the fit of the pet diaper.

[0018] The pet diaper of one embodiment further comprises leak-prevention gathers arranged laterally outward of the absorbent core, and the elastic members arranged laterally outward of the leak-prevention gathers. In this embodiment, since the elastic members are arranged laterally outward of the leak-prevention gathers, the lateral side edges of the main body can be arranged in close contact with the pet's legs. This can further improve the fit of the pet diaper.

[0019] In one embodiment, the leak-proof gathers include a second contraction member extending in the vertical direction, a standing portion that stands by contraction of the second contraction member, and a vertical fixing portion that serves as a standing fulcrum for the standing portion in the vertical direction, and the vertical fixing portion may be fixed to the main body portion at a position outside the absorbent core in the vertical direction. In this embodiment, the standing portion of the leak-proof gathers is arranged in a standing state at a position outside the absorbent core in the horizontal direction, so that urine leakage can be suppressed.

[0020] In one embodiment, the stretching ratio of the stretching member may be higher than that of the second stretching member. In this embodiment, the stretching member with a relatively strong contraction force is disposed laterally outward of the leak-proof gathers, so that the side edges of the main body can be more closely fitted along the pet's legs. This improves the fit of the pet diaper.

[0021] In one embodiment, the effective length of the elastic member is longer than the effective length of the second contraction member, and the maximum width of the tail hole in the horizontal direction may be smaller than the distance between the center line along the vertical direction of the main body and the horizontal inner edge of the leak-preventing gathers. In this embodiment, since the effective length of the elastic member is longer than the effective length of the second contraction member, even if the second contraction member is cut due to the pet moving vigorously, the contraction force of the elastic member allows the pet diaper to fit the pet.

[0022] In one embodiment, the distance between the rear edge of the tail hole and the rear edge of the absorbent core in the vertical direction may be longer than the distance between the lateral side edge of the tail hole and the elastic member in the horizontal direction. In this embodiment, the distance between the rear edge of the tail hole and the rear edge of the absorbent core is set relatively long. Since the area between the rear edge of the tail hole of the main body and the rear edge of the absorbent core does not have an absorbent core and has low rigidity, the length of this area is set relatively long so that the pet diaper can fit the pet.

[0023] In one aspect, there is provided a method for continuously manufacturing a pet diaper that extends in a lateral direction along the pet's waistline and in a vertical direction perpendicular to the lateral direction and connecting the pet's ventral side to its dorsal side, and includes a top sheet, a back sheet, and an absorbent core. This method includes the steps of: conveying a strip-shaped top sheet formed by a vertically continuous top sheet and a strip-shaped back sheet formed by a vertically continuous back sheet in a conveying direction along the vertical direction; fixing a pair of elastic members to the strip-shaped back sheet in a vertically stretched state; forming a main body composite body including the strip-shaped top sheet, the strip-shaped back sheet to which the pair of elastic members are fixed, and a plurality of absorbent cores arranged at a predetermined interval in the vertical direction between the strip-shaped top sheet and the strip-shaped back sheet; forming a tail hole by making a cut along a cutting line in the main body composite body at a position between the pair of elastic members; and cutting the main body composite body together with the pair of elastic members in the lateral direction after the tail hole is formed to form a pet diaper. The cutting line has a substantially U-shape that opens in the direction opposite to the conveying direction, a substantially U-shape that opens in the lateral direction, or a ring shape.

[0024] In the method for manufacturing a pet diaper of the above aspect, the pair of elastic members are fixed to the belt-shaped backsheet in a state stretched in the vertical direction, so that when the main body composite body is cut to form the pet diaper, the pet diaper shrinks in the vertical direction due to the contractile force of the pair of elastic members. It is not easy to form a neat, continuous tail hole without distortion in the shrunken pet diaper. In contrast, in the method for manufacturing a pet diaper described above, after the tail hole is formed, the main body composite body is cut together with the pair of elastic members, so that a neat tail hole can be formed.

[0025] The manufacturing method of the pet diaper of one embodiment may further include a step of forming a pair of leg openings in the main body composite body for passing the hind legs of the pet, either simultaneously with or after the tail hole is formed. According to this embodiment, a neat tail hole can be formed.

[0026] In one embodiment, the tail hole may be formed at a position that does not overlap with the absorbent core. By forming the tail hole at a position that does not overlap with the absorbent core having high rigidity, a neat tail hole can be formed.

[0027] In one embodiment, the strip-shaped back sheet includes a strip-shaped back nonwoven fabric and a liquid-impermeable strip-shaped back film disposed between the strip-shaped back nonwoven fabric and the strip-shaped top sheet, the main body composite includes an adhesive region where the strip-shaped top sheet and the strip-shaped back film are directly bonded to each other, and a non-adhesive region where the strip-shaped top sheet and the strip-shaped back film are not directly bonded to each other, and the tail hole may be formed in the adhesive region. In this embodiment, a neat tail hole can be formed by forming the tail hole in the adhesive region where wrinkles are less likely to occur.

[0028] In one embodiment, the main body composite further includes a pair of fastening tabs and a target portion engaging with the pair of fastening tabs, and the tail hole may be formed between the absorbent core and the target portion in the longitudinal direction. Since the region between the absorbent core and the target portion is less susceptible to wrinkles in the main body composite due to the rigidity of the absorbent core, a neat tail hole can be formed by forming the tail hole between the absorbent core and the target portion. Effect of the Invention

[0029] According to various aspects of the present invention, adhesion of feces to pets can be suppressed. [Brief description of the drawings]

[0030] [Figure 1] 1 is a plan view showing a pet diaper according to one embodiment. FIG. [Diagram 2] FIG. 2 is a cross-sectional view showing a schematic diagram of the pet diaper taken along the line AA in FIG. [Diagram 3] FIG. 2 is a diagram showing a state in which the pet diaper is worn. [Figure 4] FIG. 13 shows a modified example of a tail hole. [Diagram 5] A diagram showing another modified tail hole. [Figure 6] FIG. 11 is a plan view showing a pet diaper according to another embodiment. [Figure 7] FIG. 11 is a plan view showing a pet diaper according to yet another embodiment. [Figure 8] FIG. 11 is a plan view showing a pet diaper according to yet another embodiment. [Figure 9] FIG. 11 is a plan view showing a pet diaper according to yet another embodiment. [Figure 10] FIG. 11 is a plan view showing a pet diaper according to yet another embodiment. [Figure 11] FIG. 11 is a plan view showing a pet diaper according to yet another embodiment. [Figure 12] FIG. 11 is a plan view showing a pet diaper according to yet another embodiment. [Figure 13] FIG. 11 is a plan view showing a pet diaper according to yet another embodiment. [Figure 14] 1 is a flowchart showing a method for manufacturing a pet diaper according to one embodiment. [Figure 15] FIG. 2 is a diagram illustrating an example of a manufacturing apparatus to which the method for manufacturing a pet diaper can be applied. [Figure 16] FIG. 2 is a schematic plan view of a portion of the main body composite; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] Hereinafter, an embodiment of the present disclosure will be described with reference to the drawings. In the following description, the same or equivalent elements are denoted by the same reference numerals, and redundant description will not be repeated. The dimensional ratios of the drawings do not necessarily correspond to those in the description.

[0032] Fig. 1 is a plan view of a pet diaper according to an embodiment as viewed from the front side Z1. Fig. 2 is a cross-sectional view showing a pet diaper taken along line AA in Fig. 1. Figs. 1 and 2 show the pet diaper 1 in an elongated state in which the pet diaper 1 has been elongated to a state in which no wrinkles are formed. In the following description, unless otherwise specified, the positional relationship in the elongated state will be described. In addition, in the cross-sectional view shown in Fig. 2, for the sake of convenience, each member is shown separated in the thickness direction Z, but in an actual product, they are in contact with each other in the thickness direction Z.

[0033] The pet diaper 1 is a diaper used for pets. In this specification, the term "pet" broadly includes vertebrates and invertebrates, and typically includes pet animals such as dogs, cats, rabbits, and hamsters. The pet diaper 1 of one embodiment is a diaper for dogs or cats. This pet diaper 1 is preferably used when taking a pet for a walk. As shown in FIG. 1, the pet diaper 1 extends in a lateral direction X arranged along the pet's waist direction and a longitudinal direction Y perpendicular to the lateral direction X. The longitudinal direction Y is a direction connecting the pet's ventral side to its dorsal side. The thickness direction Z is a direction perpendicular to the lateral direction X and the longitudinal direction Y, and includes a surface side Z1 that is applied to the pet when worn, and a back side Z2 that is directed outward when worn. As shown in FIG. 3, the pet diaper according to the embodiment is worn so as to cover the pet's ventral side through the crotch to its dorsal side.

[0034] The pet diaper 1 has a main body 2. The main body 2 includes at least a top sheet 10, a back sheet 20, and an absorbent core 30. The top sheet 10 constitutes the surface of the main body 2 that is in contact with a pet, and is disposed on the front side Z1. The top sheet 10 has liquid permeability that allows bodily fluids to pass through to the absorbent core 30. The top sheet 10 is located in the center of the longitudinal direction Y, and includes a center sheet 11 that covers the absorbent core 30, and a side sheet 12 that covers both sides of the center sheet 11 in the transverse direction X. As shown in FIG. 2, the inner part of the side sheet 12 in the transverse direction X is folded back to the back side Z2. Between the folded back side sheets 12, an elastic member (second elastic member) 13 in a state of being stretched in the longitudinal direction Y is disposed. The side sheet 12 and the elastic member 13 constitute a leak-proof gather 80. The leak-proof gather 80 is an upright leak-proof gather, and is disposed on the front side Z1 of the absorbent core 30. The leakage preventing gathers 80 will be described in detail later.

[0035] The back sheet 20 constitutes the surface of the main body 2 that is positioned on the outside when worn, and is arranged on the back side Z2. The back sheet 20 includes a liquid-impermeable back film 21 and a back nonwoven fabric 22 that is positioned on the back side Z2 relative to the back film 21. In one embodiment, the back nonwoven fabric 22 may be arranged on the front side Z1 relative to the back film 21. The length of the back film 21 in the lateral direction X may be formed shorter than the length of the back nonwoven fabric 22 in the lateral direction X, and the back nonwoven fabric 22 may extend beyond the back film 21 on both sides in the lateral direction X.

[0036] The absorbent core 30 is disposed between the top sheet 10 and the back sheet 20. The absorbent core 30 contains, for example, plant-derived pulp and a polymeric absorbent (SAP), and absorbs, for example, pet urine. As shown in FIG. 2, the upper and lower surfaces of the absorbent core 30 may be covered with a core wrap 32. The absorbent core 30 is disposed at approximately the center of the main body portion 2 in the lateral direction X. The width of the absorbent core 30 in the lateral direction X is shorter than the width of the main body portion 2 in the lateral direction X. In addition, the width of the absorbent core 30 in the lateral direction X may be partially narrowed at a position between the rear edge 30R of the absorbent core 30 and the ventral edge 30F of the absorbent core 30.

[0037] The rear edge 30R of the absorbent core 30 is located rearward of the center line CL2 in the longitudinal direction Y of the main body portion 2. The ventral edge 30F of the absorbent core 30 is located rearward of a ventral edge 2F described below. In other words, the length of the absorbent core 30 in the longitudinal direction Y is shorter than the length of the main body portion 2 in the longitudinal direction Y. In addition, the rear edge 30R of the absorbent core 30 is located rearward of a ventral edge 70F of a tail hole 70 described below.

[0038] The main body 2 has a dorsal edge 2R located on the dorsal side in the longitudinal direction Y and a ventral edge 2F located on the ventral side in the longitudinal direction Y. The dorsal edge 2R is disposed in the direction of the pet's waist on the dorsal side when worn, and the ventral edge 2F is disposed in the direction of the pet's waist on the ventral side when worn. The main body 2 also has a dorsal region 51 located on the dorsal edge 2R side, a ventral region 52 located on the ventral edge 2F side, and an intermediate region 53 located between the dorsal region 51 and the ventral region 52 in the longitudinal direction Y. A pair of extensions 14 extending outward from the main body 2 in the lateral direction X are formed in the dorsal region 51 of the main body 2. A pair of extensions 15 extending outward from the main body 2 in the lateral direction X are formed in the ventral region 52 of the main body 2. The pair of extensions 15 define a pair of leg openings 15s for passing the pet's hind legs.

[0039] A pair of fastening tabs 90 are provided on the pair of extension portions 15. The pair of fastening tabs 90 extend outward in the lateral direction X from the main body portion 2 in the vicinity of the ventral end edge 2F in the longitudinal direction Y of the main body portion 2. Each of the pair of fastening tabs 90 may have a base sheet 91 joined to the extension portion 15 and a joint portion 92 provided on the base sheet 91. The joint portion 92 is disposed on the surface of the front side Z1 of the fastening tab 90. The joint portion 92 is, for example, a mechanical fastener, and is configured to be joinable to a target portion 45 formed on the back side Z2 of the main body portion 2. The pair of fastening tabs 90 are provided on the ventral side of the tail hole 70 described later, and the target portion 45 is provided on the dorsal side of the tail hole 70. In one embodiment, the main body portion 2 does not include the target portion 45, and the joint portion 92 of the pair of fastening tabs 90 may be configured to be directly joined to the back side Z2 of the back sheet 20.

[0040] In addition, waist gathers 93 that stretch in the lateral direction X may be provided near the ventral edge 2F of the main body 2. The waist gathers 93 are disposed, for example, on the ventral side of the dorsal edges 90R of the pair of fastening tabs 90, and stretch in the lateral direction to bring the ventral region 52 into close contact with the pet's abdomen.

[0041] A tail hole 70 is formed in the main body 2. The tail hole 70 is a substantially tongue-shaped opening formed in the main body 2, for example, by making a substantially U-shaped cut 50 that opens on the dorsal side of the main body 2. The tail hole 70 is used as an excretion hole through which the pet's tail can be inserted and through which the pet's feces can pass. The tail hole 70 has a vertically elongated shape in which the maximum opening width W2 in the vertical direction Y is larger than the maximum opening width W1 in the horizontal direction X. The maximum opening width W1 of the tail hole 70 in the horizontal direction X is designed to be larger than the width of the pet's anus 98 (see FIG. 3). In one embodiment, the opening width of the tail hole 70 in the horizontal direction X may be continuously narrowed toward the ventral side.

[0042] In the embodiment shown in Fig. 1, the rear edge 70R of the tail hole 70 and the ventral edge 70F of the tail hole 70 are located rearward of the center line CL2 of the main body part 2 in the longitudinal direction Y. The center line CL2 is an imaginary line that is located at an equal distance from the rear edge 2R and the ventral edge 2F and extends along the transverse direction X. In other words, the center line CL2 is the part where a crease is formed when the pet diaper 1 is folded in half in the longitudinal direction Y, and when the pet diaper 1 is put on a pet, the area of ​​the main body part 2 that is rearward of the center line CL2 is placed against the pet's urination opening.

[0043] As shown in FIG. 1, the dorsal edge 70R of the tail hole 70 is disposed on the ventral side of the midpoint MP between the center line CL2 of the main body 2 in the longitudinal direction Y and the ventral edge 45F of the target portion 45. In one embodiment, the maximum opening width W2 of the tail hole 70 in the longitudinal direction Y may be greater than the distance D1 between the ventral edge 70F of the tail hole 70 and the center line CL2 of the main body 2 in the longitudinal direction Y. Also, the maximum opening width W2 of the tail hole 70 in the longitudinal direction Y may be greater than the distance D2 between the dorsal edge 70R of the tail hole 70 and the midpoint MP. Specifically, the maximum opening width W2 of the tail hole 70 in the longitudinal direction Y may be 35 mm or more and 80 mm or less, more preferably 40 mm or more and 80 mm or less. Furthermore, the distance D1 between the ventral edge 70F of the tail hole 70 and the center line CL2 of the main body 2 in the longitudinal direction Y may be smaller than the distance D2 between the dorsal edge 70R of the tail hole 70 and the midpoint MP.

[0044] In addition, the ventral edge 70F of the tail hole 70 is formed on the rear side of the rear edge 70R of the absorbent core 30. Therefore, an area where the absorbent core 30 is not arranged is formed on the outside of the tail hole 70 of the main body part 2 in the lateral direction X and on the rear side of the tail hole 70 of the main body part 2. In one embodiment, the distance D3 between the ventral edge 70F of the tail hole 70 and the rear edge 70R of the absorbent core 30 may be shorter than the distance D4 between the rear edge 30R of the absorbent core 30 and the center line CL2 of the main body part 2 in the longitudinal direction Y. In other words, the rear edge 30R of the absorbent core 30 is arranged in a position close to the ventral edge 70F of the tail hole 70.

[0045] The tail hole 70 is formed on the center line CL1 of the main body 2 in the lateral direction X. The center line CL1 is an imaginary line that is located at an equal distance from a pair of side edges 2S of the main body 2 in the lateral direction X and extends along the longitudinal direction Y. In one embodiment, the maximum opening width W1 of the tail hole 70 in the lateral direction X may be smaller than the distance D5 between the center line CL1 of the main body 2 in the lateral direction X and the inner edge 80S of the leak-proof gathers 80 in the lateral direction X. In addition, the distance D6 between the rear edge 70R of the tail hole 70 and the rear edge 30R of the absorbent core 30 in the longitudinal direction Y may be larger than the distance D7 between the side edge 70S of the tail hole 70 in the lateral direction X and the elastic member 40 described later. The shape of the tail hole 70 is not limited to a substantially tongue-like shape, and may be a semicircular, rectangular, trapezoidal, polygonal or elliptical shape.

[0046] A tongue piece 72 is formed in the main body 2. The tongue piece 72 is a flap-shaped member formed, for example, by making a cut 50 in the main body 2, and is composed of, for example, a part of the top sheet 10 and the back sheet 20. The tongue piece 72 has a shape that is approximately the same as the opening shape of the tail hole 70, and is arranged so as to overlap the tail hole 70. The tongue piece 72 has a base end 72R connected to the back edge 70R of the tail hole 70, a tip end 72F located on the opposite side of the base end 72R, and a side portion 72S connecting the base end 72R and the tip end 72F. The tip end 72F is connected to the middle region 53 of the main body 2. On the other hand, the tip end 72F and the side portion 72S are not connected to the middle region 53 of the main body 2 and are free. The tip end 72F of the tongue piece 72 faces the ventral side when the tongue piece 72 is not folded back (overlapping the tail hole 70).

[0047] As shown in FIG. 3, the tongue 72 is configured to open the tail hole 70 by folding back from the base end 72R to the back side Z2. As described above, the tip 72F of the tongue 72 is directed to the ventral side, so that when the tail is inserted into the tail hole 70 and the tongue 72 is folded back from the base end 72R to the back side Z2, the tongue 72 abuts against the back side of the tail. By disposing the tongue 72 on the back side of the tail, feces are prevented from adhering to the tongue 72 during excretion. In one embodiment, the tip 72F and side 72S of the tongue 72 are temporarily fixed to the intermediate region 53 of the main body 2 via discontinuous cuts, for example, perforations, and the tip 72F and side 72S may be released from the intermediate region 53 of the main body 2 by tearing the tongue 72 along the perforations.

[0048] In one embodiment, as shown in FIG. 4, the tongue 72 may be formed by making a substantially U-shaped cut 50 that is open in the lateral direction X of the main body 2. The tip 72F of the tongue 72 shown in FIG. 4 is directed in the lateral direction X when the tongue 72 is not folded back. In the embodiment shown in FIG. 4, when a tail is inserted into the tail hole 70 and the tongue 72 is folded back to the back side Z2 starting from the base end 72R, the tongue 72 abuts against the side of the pet's tail. In another embodiment, as shown in FIG. 5, a ring-shaped cut 50 may be made around the entire edge of the tail hole 70 and a part of the main body 2 may be cut out to form a tail hole 70 without a tongue 72. Even in the embodiment shown in FIG. 4 and FIG. 5, the tongue 72 is not positioned below the anus 98 of the pet when the tail is inserted into the tail hole 70, so that feces are prevented from adhering to the pet diaper 1 during excretion.

[0049] Next, the leak-preventing gathers 80 will be described in more detail. The leak-preventing gathers 80 are disposed outside the absorbent core 30 in the lateral direction X, and suppress leakage of urine excreted into the absorbent core 30 in the lateral direction X. In one embodiment, the leak-preventing gathers 80 include an elastic member 13 extending in the longitudinal direction Y, a standing portion 81 that stands due to contraction of the elastic member 13, a horizontal fixing portion 82 that serves as a standing fulcrum for the standing portion 81 in the lateral direction X, and a vertical fixing portion 83 that serves as a standing fulcrum for the standing portion 81 in the longitudinal direction Y. The standing portion 81, the horizontal fixing portion 82, and the vertical fixing portion 83 of the leak-preventing gathers 80 are formed by the side sheet 12. The standing portion 81 is a portion of the side sheet 12 that is not connected to the center sheet 11, and the stretched elastic member 13 is disposed in the standing portion 81.

[0050] The lateral fixing portion 82 is a portion of the side sheet 12 fixed to the center sheet 11 on the outer side of the standing portion 81 in the lateral direction X, and serves as a supporting point for the standing portion 81 in the lateral direction X. The lateral fixing portion 82 may be formed over the entire area of ​​the main body portion 2 in the longitudinal direction Y at a position on the outer side of the standing portion 81 in the lateral direction X.

[0051] The vertical fixing portion 83 is a portion of the side sheet 12 fixed to the center sheet 11 on the outer side of the upright portion 81 in the vertical direction Y, and serves as a supporting point for the upright portion 81 in the vertical direction Y. In one embodiment, the vertical fixing portion 83 includes a first vertical fixing portion 83R and a second vertical fixing portion 83F. The first vertical fixing portion 83R is formed at a position inside the horizontal fixing portion 82 in the horizontal direction X and on the back side of the absorbent core 30. More specifically, the ventral edge 83I of the first vertical fixing portion 83R is disposed at a position between the ventral edge 70F of the tail hole 70 and the back side edge 30R of the absorbent core 30. The second vertical fixing portion 83F is formed at a position inside the horizontal fixing portion 82 in the horizontal direction X and on the ventral side of the absorbent core 30. That is, the vertical fixing portion 83 is fixed to the main body portion 2 at a position outside the absorbent core 30 in the vertical direction Y.

[0052] As described above, the standing portion 81 is disposed inside the horizontal fixing portion 82 in the horizontal direction X and inside the vertical fixing portion 83 in the vertical direction Y. The elastic member 13 stretched in the vertical direction Y is connected to the standing portion 81, and the main body portion 2 is deformed in a direction to close as the elastic member 13 contracts in the vertical direction Y. This deformation causes the standing portion 81 to rise from the horizontal fixing portion 82 as a starting point. In this way, the standing portion 81 prevents urine leakage by rising at a position that sandwiches the absorbent core 30 from the horizontal direction X.

[0053] The pet diaper 1 further includes a pair of elastic members (first elastic members) 40 that are stretchable in the length direction. As shown in FIG. 1, the pair of elastic members 40 are disposed outside the elastic members 13 of the leak-proof gathers 80 in the lateral direction X. In the embodiment shown in FIG. 1, the elastic members 40 extend over the entire area of ​​the main body 2 in the longitudinal direction Y. The elastic members 40 are fixed to the main body 2 in a state stretched in the longitudinal direction Y, thereby applying a force that deforms the main body 2 in a closing direction. The pair of elastic members 40 are, for example, rubber threads or flat rubber that are stretchable in the longitudinal direction, and are disposed along the side edges 2S of the main body 2 between the top sheet 10 and the back sheet 20 of the main body 2. The pair of elastic members 40 may extend in the longitudinal direction Y while being sewn to the top sheet 10 and the back sheet 20 of the main body 2.

[0054] In one embodiment, when the pet diaper 1 is in an extended state, the extension ratio of the elastic member 40 may be higher than the extension ratio of the elastic member 13 of the leak-proof gathers 80. The extension ratio indicates the degree of extension when the natural length of the elastic member 40 or the elastic member 13 is set to 1. The natural length of the elastic member 40 or the elastic member 13 is the length of the elastic member 40 or the elastic member 13 when no external force is applied. For example, the extension ratio of the elastic member 40 is calculated by (length of the elastic member 40 in an extended state) / (length of the elastic member 40 in a natural state). The larger the extension ratio, the greater the contractile force of the elastic member 40 or the elastic member 13. By making the extension ratio of the elastic member 40 higher than the extension ratio of the elastic member 13, the contractile force of the elastic member 40 can bring the side edge 2S of the main body 2 into close contact with the pet, and for example, even if the pet moves vigorously, the pet diaper 1 can be prevented from shifting.

[0055] In one embodiment, the effective length of the elastic member 40 may be longer than the effective length of the elastic member 13. The effective length is the length of the portion of the elastic member 40 or the elastic member 13 that actually contracts. For example, in the embodiment shown in FIG. 1, the effective length of the elastic member 40 corresponds to the length of the vertical direction Y of the main body 2, and the effective length of the elastic member 13 corresponds to the distance between the ventral edge of the first vertical fixing part 83R and the dorsal edge of the second vertical fixing part 83F. By making the effective length of the elastic member 40 longer than the effective length of the elastic member 13, the fit of the pet diaper 1 can be ensured by the contraction force of the elastic member 40 even if the elastic member 13 is cut due to, for example, a pet moving violently.

[0056] In the embodiment shown in FIG. 1, the elastic member 40 extends over the entire area of ​​the main body 2 in the vertical direction Y. Therefore, the elastic member 40 overlaps with the area extending in the horizontal direction X from the area between the tail hole 70 and the absorbent core 30. With this configuration, the contraction of the elastic member 40 pulls the area between the ventral edge 70F of the tail hole 70 of the main body 2 and the dorsal edge 30R of the absorbent core 30 toward the absorbent core 30 and presses it against the pet's buttocks. This improves the fit between the main body 2 and the pet's buttocks, making it less likely that a gap will occur between the main body 2 and the pet's buttocks. As a result, feces is less likely to enter the inside of the pet diaper 1, and feces is less likely to adhere to the pet.

[0057] In particular, in the pet diaper 1, the absorbent core 30 is not disposed in the area between the tail hole 70 of the main body 2 and the absorbent core 30, so this area has a lower rigidity by the amount of the absorbent core 30. Therefore, the area between the tail hole 70 and the absorbent core 30 flexibly deforms along the pet's buttocks, making it more difficult for a gap to form between the main body 2 and the pet's buttocks.

[0058] The elastic member 40 does not have to extend over the entire area of ​​the main body 2 in the vertical direction Y. For example, as shown in Fig. 6, the elastic member 40 may extend in the vertical direction Y at least between the ventral edge 70F of the tail hole 70 and the dorsal edge 30R of the absorbent core 30. If the elastic member 40 extends at least between the ventral edge 70F of the tail hole 70 and the dorsal edge 30R of the absorbent core 30, the contraction force of the elastic member 40 will pull the area between the tail hole 70 of the main body 2 and the absorbent core 30 toward the absorbent core 30, making it less likely that a gap will form between the main body 2 and the buttocks of the pet.

[0059] In another embodiment, the elastic member 40 may extend beyond the center position of the tail hole 70 in the longitudinal direction Y. For example, in the embodiment shown in Fig. 7, in the longitudinal direction Y, the rear edge 40R of the elastic member 40 is disposed between the rear edge 70R of the tail hole 70 and the center position of the tail hole 70, and the ventral edge 40F of the elastic member 40 is disposed at a position that coincides with the rear edge 30R of the absorbent core 30. In this embodiment, the contraction of the elastic member 40 presses the outer region of the tail hole 70 in the lateral direction X against the buttocks of the pet, so that a gap is unlikely to occur between the side edge 70S of the tail hole 70 in the lateral direction X and the buttocks of the pet.

[0060] In another embodiment, the elastic member 40 may extend beyond the rear edge 70R of the tail hole 70 in the longitudinal direction. For example, in the embodiment shown in Fig. 8, the rear edge 40R of the elastic member 40 is disposed between the rear edge 70R of the tail hole 70 and the target portion 45 in the longitudinal direction Y, and the ventral edge 40F of the elastic member 40 is disposed at a position coinciding with the rear edge 30R of the absorbent core 30 in the longitudinal direction Y. In this embodiment, the contraction of the elastic member 40 causes the rear region of the tail hole 70 of the main body portion 2 to be pressed against the pet's back, improving the fit of the pet diaper 1.

[0061] In yet another embodiment, when a virtual tail hole 75 is set at a position that is symmetrical to the tail hole 70 with respect to the center line CL2 in the vertical direction Y, the elastic member 70 may extend beyond the ventral edge 75F of the virtual tail hole 75. For example, in the embodiment shown in FIG. 9, the dorsal edge 40R of the elastic member 40 is disposed at a position that coincides with the ventral edge 70F of the tail hole 70 in the vertical direction Y, and the ventral edge 40F of the elastic member 40 is disposed between the ventral edge 75F of the virtual tail hole 75 and the fastening tab 90 in the vertical direction Y. In this embodiment, since the elastic member 40 extends beyond the center line CL2 to the ventral side, the ventral region of the main body portion 2 is pressed against the pet's abdomen by the contraction of the elastic member 40, improving the fit of the pet diaper 1.

[0062] In yet another embodiment, the elastic member 40 may extend beyond the rear edge 90R of the pair of fastening tabs 90 in the longitudinal direction Y. For example, in the embodiment shown in FIG. 10, the rear edge 40R of the elastic member 40 is disposed at a position coinciding with the ventral edge 70F of the tail hole 70 in the longitudinal direction Y, and the ventral edge 40F of the elastic member 40 is disposed between the rear edge 90R of the fastening tab 90 and the ventral edge 90F of the fastening tab 90 in the longitudinal direction Y. In this embodiment, since the elastic member 40 extends beyond the rear edge 90R of the pair of fastening tabs 90, the elastic member 40 is stretched to the ventral side by the tension of pulling up the pair of fastening tabs 90 to engage with the target portion 45, and the contraction force of the elastic member 40 presses the main body portion 2 against the pet's buttocks. Therefore, the fit of the pet diaper 1 is improved.

[0063] In yet another embodiment, the elastic member 40 may extend beyond the ventral edge 45F of the target portion 45 in the longitudinal direction. For example, in the embodiment shown in FIG. 11, the rear edge 40R of the elastic member 40 is disposed between the ventral edge 45F of the target portion 45 and the rear edge 45R of the target portion 45 in the longitudinal direction Y, and the rear edge 40F of the elastic member 40 is disposed at a position coinciding with the rear edge 30R of the absorbent core 30. Generally, pets such as dogs and cats stick out their buttocks and curl their backs when defecating. In this embodiment, the elastic member 40 extends beyond the ventral edge 45F of the target portion 45, so that the elastic member 40 extends when the pet curls its back during defecation, and the contraction force of the elastic member 40 presses the main body portion 2 against the pet's back. Therefore, the fit of the pet diaper 1 is improved.

[0064] In yet another embodiment, the elastic member 40 may extend beyond the rear edge 93F of the waist gather 93. For example, in the embodiment shown in FIG. 12, the rear edge 40R of the elastic member 40 is disposed at a position that coincides with the ventral edge 70F of the tail hole 70, and the ventral edge 40F of the elastic member 40 is disposed between the waist gather 93 and the ventral edge 2F in the longitudinal direction Y. By the elastic member 40 extending beyond the rear edge 93F of the waist gather 93, the elastic member 40 is stretched toward the ventral side by the contraction of the waist gather. Therefore, the contraction of the elastic member 40 presses the main body portion 2 against the pet's abdomen, improving the fit of the pet diaper 1.

[0065] In the embodiment shown in Fig. 1, the ventral edge 70F of the tail hole 70 is located dorsally of the center line CL2 of the main body 2 in the longitudinal direction Y, but in one embodiment, the ventral edge 70F of the tail hole 70 may be located ventrally of the center line CL2 of the main body 2 in the longitudinal direction Y. For example, in the embodiment shown in Fig. 13, the dorsal edge 70R of the tail hole 70 is located dorsally of the center line CL2, and the ventral edge 70F of the tail hole 70 is located ventrally of the center line CL2. By setting the position of the tail hole 70 in this way, the tail hole 70 is located approximately horizontally when the pet sits down, so that feces can pass through more reliably.

[0066] FIG. 3 is a diagram showing a state in which the pet diaper 1 is put on a pet. When putting the pet diaper 1 on a pet, first, the pet's tail is put out to the back side Z2 of the diaper through the tail hole 70, so that the pet's anus 98 is exposed from the tail hole 70. At this time, the tongue piece 72 is folded back to the back side Z2 starting from the base end 72R, so that the tongue piece 72 abuts against the back side of the tail. Next, the abdominal side edge 2F of the main body part 2 is put against the pet's abdomen. Then, the rear side edge 2R of the main body part 2 is put against the pet's back while the center line CL2 of the main body part 2 in the vertical direction Y is put against the pet's urination opening. 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 engaged with the outer surface of the target part 45 of the main body part 2. As a result, the pet diaper 1 is put on so as to cover the pet's abdomen, back, and crotch as shown in FIG. 3.

[0067] As described above, in the pet diaper 1 according to the embodiment described above, the tail hole 70 exposes the pet's anus 98 from the tail hole 70 of the main body 2, so that the pet's urine is received by the pet diaper 1 while the pet's feces can be discharged to the outside through the tail hole 70. In particular, in the pet diaper 1, the tail hole 70 has a vertically elongated shape, so that when the pet diaper 1 is worn on the pet, the pet's anus 98 can be reliably exposed from the main body 2. In addition, by arranging the back edge 70R of the tail hole 70 on the ventral side of the midpoint MP between the center line CL2 of the main body 2 and the ventral edge 45F of the target portion 45 in the vertical direction Y, the back edge 70R of the tail hole 70 can be reliably abutted against the back of the tail when the pet diaper 1 is worn. Therefore, the shifting of the pet diaper 1 is suppressed, and feces can be discharged to the outside of the pet diaper 1 while preventing urine leakage. It should be noted that the pet diaper 1 does not have a feces bag attached thereto for collecting feces discharged from the tail hole 70.

[0068] However, if there is a gap between the edge of the tail hole 70 and the buttocks of the pet, there is a risk that feces may enter the inside of the pet diaper 1 through the gap and adhere to the pet. In particular, in the case of soft feces, even if there is only a small gap between the edge of the tail hole 70 and the buttocks of the pet, the soft feces may enter the pet diaper 1 through the gap and spread inside the pet diaper 1. In this case, it is necessary to take the time to wash off the feces that have spread and adhered to the pet with a shower or the like. In contrast, in the pet diaper 1, the contraction of the elastic member 40 causes the area between the tail hole 70 of the main body 2 and the absorbent core 30 to be pressed against the buttocks of the pet, so that a gap is unlikely to be formed between the edge of the tail hole 70 and the buttocks of the pet. Therefore, feces are prevented from entering the inside of the pet diaper 1 through the gap and adhering to the pet.

[0069] Next, a method for manufacturing the above-mentioned pet diaper 1 will be described with reference to Figs. 14 and 15. Fig. 14 is a flow chart showing a method for manufacturing a pet diaper according to one embodiment. Fig. 15 is a schematic diagram showing an example of a manufacturing apparatus to which the method for manufacturing a pet diaper according to one embodiment is applied. This method for manufacturing a pet diaper continuously manufactures the above-mentioned pet diaper 1 by carrying out each process described below. In the following description, the terms "upstream" and "downstream" are used based on the transport direction CD described below.

[0070] As shown in FIG. 15, the manufacturing apparatus 100 includes a conveying roller 102, elastic member supplying devices 104 and 105, an absorbent core supplying device 106, a bonding device 108, a tail hole forming device 110, a folding device 112 and a cutting device 114.

[0071] In a manufacturing method of a pet diaper according to an embodiment, first, a conveying roller 102 conveys a strip-shaped topsheet 210, which is a strip-shaped sheet member formed by continuing the topsheet 10 of the pet diaper 1 in the vertical direction Y, and a strip-shaped backsheet 220, which is a strip-shaped sheet member formed by continuing the backsheet 20 of the pet diaper 1 in the vertical direction, in a conveying direction CD (step ST1). The conveying direction CD in which the strip-shaped topsheet 210 and the strip-shaped backsheet 220 are conveyed is a direction along the vertical direction Y of the pet diaper 1. The strip-shaped topsheet 210 may have a plurality of pairs of fastening tabs 90 formed at a predetermined interval in the conveying direction CD.

[0072] The strip-shaped back sheet 220 includes a liquid-impermeable strip-shaped back film 221 formed by the back film 21 being continuous in the longitudinal direction Y, and a strip-shaped back nonwoven fabric 222 formed by the back nonwoven fabric 22 being continuous in the longitudinal direction Y. When the strip-shaped top sheet 210 and the strip-shaped back sheet 220 are bonded together, the strip-shaped back sheet 220 is disposed between the strip-shaped back nonwoven fabric 222 and the strip-shaped top sheet 210. As described later, the strip-shaped top sheet 210 and the strip-shaped back sheet 220 are cut by the cutting device 114 so that the length in the longitudinal direction Y is a predetermined dimension, whereby the top sheet 10 and the back sheet 20 are formed from the strip-shaped top sheet 210 and the strip-shaped back sheet 220, respectively. The strip-shaped back sheet 220 may be provided with target portions 45 arranged at a predetermined interval in the conveyance direction CD and engaged with a pair of fastening tabs 90.

[0073] Next, the elastic member supplying device 104 fixes a pair of elastic members 13 to the strip-shaped topsheet 210 (step ST2). The pair of elastic members 13 are fixed to the strip-shaped topsheet 210 in a state stretched in the conveying direction CD, i.e., the longitudinal direction Y. Next, the elastic member supplying device 105 fixes a pair of elastic members 40 to the strip-shaped backsheet 220 (step ST3). The pair of elastic members 40 are fixed to the strip-shaped backsheet 220 in a state stretched in the conveying direction CD, i.e., the longitudinal direction Y. The strip-shaped topsheet 210 to which the pair of elastic members 13 are fixed and the strip-shaped backsheet 220 to which the pair of elastic members 40 are fixed are transported downstream in the conveying direction CD.

[0074] Next, the absorbent core supplying device 106 arranges a plurality of absorbent cores 30 on the strip-shaped back sheet 220 (step ST4). The plurality of absorbent cores 30 are arranged on the strip-shaped back sheet 220 at a predetermined interval in the conveying direction CD. Next, in a state in which the strip-shaped back sheet 220, the plurality of absorbent cores 30, and the strip-shaped top sheet 210 are laminated in order, the bonding device 108 forms a bonding region R1 using, for example, a hot melt adhesive (HMA) to bond the strip-shaped back sheet 220 and the strip-shaped top sheet 210 together (step ST5). This forms a main body composite 200 including the strip-shaped top sheet 210, the strip-shaped back sheet 220, and the plurality of absorbent cores 30 arranged at a predetermined interval in the longitudinal direction Y between the strip-shaped top sheet 210 and the strip-shaped back sheet 220. The formed main body composite 200 is conveyed downstream in the conveying direction CD.

[0075] FIG. 16 is a plan view that shows a schematic view of a part of the main body composite 200. As shown in FIG. 16, the main body composite 200 includes an adhesive region R1 and a non-adhesive region R2. In FIG. 16, the white portion corresponds to the adhesive region R1, and the shaded portion corresponds to the non-adhesive region R2. The adhesive region R1 is a region where the strip-shaped top sheet 210 and the strip-shaped back film 221 are directly adhered to each other by the adhering device 108. The non-adhesive region R2 is a region where the strip-shaped top sheet 210 and the strip-shaped back film 221 are not directly adhered to each other. Specifically, the non-adhesive region R2 is a region where the absorbent core 30 is interposed between the strip-shaped top sheet 210 and the strip-shaped back film 221, and a region where the strip-shaped top sheet 210 and the strip-shaped back nonwoven fabric 222 are adhered to each other.

[0076] Next, the tail hole forming device 110 forms a tail hole 70 in the main body composite 200 at a position downstream of the bonding device 108 (step ST6). As shown in FIG. 15, the tail hole forming device 110 includes a pair of rotatable rollers 110A, a cutter 110B for forming the tail hole 70, and a cutter 110C for forming a pair of leg openings 15s. The cutter 110B is attached to the outer circumferential surface of one of the pair of rollers 110A and has a substantially U-shaped cutting edge. The cutter 110B makes a cut 50 along a substantially U-shaped cutting line that opens in the opposite direction (upstream side) of the conveying direction CD in the main body composite 200 passing between the pair of rollers 110A, thereby forming the tail hole 70 (step ST6). In other words, the cut 50 has a substantially U-shape that protrudes toward the downstream side of the conveying direction CD. As shown in FIG. 16, the tail hole 70 is formed in the main body composite body 200 at a position between the absorbent core 30 and the target portion 45 in the longitudinal direction Y and at a position between the pair of elastic members 40 in the transverse direction X.

[0077] The generally U-shaped cut 50 forms a tongue-shaped piece 72. The tip 72F of the tongue piece 72 faces the downstream side in the conveying direction CD when the tongue piece 72 is not folded back. The tail hole 70 is opened by folding back the tongue piece 72 to the back side.

[0078] In one embodiment, in step ST6, the tail hole 70 may be formed by making a substantially U-shaped cut that opens in the lateral direction X (direction perpendicular to the conveying direction CD). In other words, the tail hole forming device 110 forms a substantially U-shaped cut that protrudes in the lateral direction X. As a result, as shown in FIG. 4, when the tongue piece 72 is not folded back, a tongue piece 72 is formed whose tip portion 72F faces the lateral direction X. The tongue piece 72 is folded back to the back side to open the tail hole 70.

[0079] In another embodiment, in step ST6, a cut may be made along a circular cutting line to form the tail hole 70. Here, the circular cutting line means a line that cuts out a part of the main body complex 200 all around, and the planar shape is not limited to a circular ring, but includes any ring shape such as a rectangular ring or a polygonal ring. By cutting out a part of the main body complex 200 by making a cut along a cutting line having a circular planar shape, a tail hole 70 without a tongue piece 72 is formed as shown in FIG. 5.

[0080] In one embodiment, the tail hole 70 is formed in the adhesive region R1 of the main body composite body 200. Since the adhesive region R1 is an area where the strip-shaped top sheet 210 and the strip-shaped back film 221 are directly adhered to each other, wrinkles are unlikely to occur in the main body composite body 200 when the incisions 50 are formed, and it is possible to form a clean, continuous tail hole 70 with little distortion.

[0081] The cutter 110B cuts a part of both sides of the main body complex 200 to form parts in the main body complex 200 corresponding to the pair of extension parts 14 and the pair of extension parts 15, and also forms a pair of leg openings 15s for passing the hind legs of the pet. The pair of leg openings 15s may be formed simultaneously with the tail hole 70, or may be formed after the tail hole 70 is formed and before the main body complex 200 is folded by the folding device 112. The main body complex 200 with the tail hole 70 and the pair of leg openings 15s formed therein is transported downstream in the transport direction CD.

[0082] A tail hole sensor 122 may be provided downstream of the tail hole forming device 110. The tail hole sensor 122, for example, images the area of ​​the main body complex 200 where the tail hole 70 is formed, and determines whether or not the tail hole 70 is formed in an appropriate position in the main body complex 200 by performing image recognition processing on the captured image. If the tail hole sensor 122 determines that the tail hole 70 is not formed in the main body complex 200, the tail hole sensor 122 notifies the operator of the manufacturing apparatus 100 of information indicating that there is a problem with the tail hole 70.

[0083] Next, the folding device 112 folds the pair of extension parts 14 and the pair of extension parts 15 inside the main body composite body 200 (step ST7). Next, the cutting device 114 cuts the main body composite body 200 along the lateral direction X to divide the main body composite body 200 into a plurality of pet diapers 1. As shown in FIG. 15, the cutting device 114 includes a pair of rotatable rollers 114A and a cutter 114B for cutting the main body composite body 200. The cutter 114B is attached to the outer circumferential surface of one of the pair of rollers 114A and extends along the axial direction of the roller 114A. The main body composite body 200 conveyed by the pair of rollers 114A is cut together with the pair of elastic members 13 and the pair of elastic members 40 to divide the main body composite body 200 into a plurality of pet diapers 1. As a result, a plurality of pet diapers 1 are manufactured.

[0084] When the main body composite body 200 is cut, the pet diaper 1 is contracted in the vertical direction Y by the contraction force of the pair of elastic members 40. It is not easy to form a continuous and beautiful tail hole 70 without distortion in the contracted pet diaper 1. In particular, when the cutting line of the incision 50 has a substantially U-shape opened in the opposite direction to the conveying direction CD, a substantially U-shape opened in the horizontal direction X, or a ring shape, the area of ​​the start point of the incision becomes relatively wide, so that the shear force applied to the pet diaper 1 is dispersed, and a distorted tail hole 70 or a discontinuous tail hole 70 where the incision is interrupted is likely to be formed. In contrast, in the manufacturing method of the pet diaper 1 described above, after the tail hole 70 is formed by the tail hole forming device 110, the main body composite body 200 is cut along the horizontal direction X by the cutting device 114 together with the pair of elastic members 40, so that a beautiful tail hole 70 can be formed.

[0085] Although various embodiments of the pet diaper and the manufacturing method of the pet diaper have been described above, the present invention is not limited to the above-mentioned embodiments, and various modifications can be made without changing the gist of the invention. In other words, it should be noted that the above-mentioned embodiments are for illustrative purposes only and do not limit the scope of the present invention. The above-mentioned various embodiments can be combined within a range that does not cause any contradiction. [Explanation of symbols]

[0086] 1...pet diaper, 2...main body portion, 2S...side edge, 10...surface sheet, 13...elastic member, 20...back sheet, 30...absorbent core, 40...elastic member, 45...target portion, 70...tail hole, 72...tongue, 72F...tip portion, 72R...base end portion, 75...virtual tail hole, 80...leak-proof gathers, 81...standing portion, 83...vertical fixing portion, 90...fastening tab, 93...waist gathers, 98...anus, CL1, CL2...center line, MP...midpoint, W1, W2...maximum opening width.

Claims

1. A pet diaper having a main body portion including an absorbent core, the main body portion extending in a lateral direction disposed along a pet's waistline and in a vertical direction perpendicular to the lateral direction and connecting the pet's ventral side to its dorsal side, The main body is provided with a tail hole through which the pet's feces can pass, A pair of fastening tabs are provided on the ventral side of the tail hole and extend outward from the side edges of the main body in the lateral direction; A target portion provided on the rear side of the tail hole and engaging with the pair of fastening tabs; an elastic member that is fixed to the main body portion in a state stretched in the longitudinal direction and that extends in the longitudinal direction at least between the ventral edge of the tail hole and the dorsal edge of the absorbent core; Further comprising: The tail hole is formed by making an annular cut around the entire circumference of the edge of the tail hole and cutting out a part of the main body, A pet diaper, wherein in the vertical direction, the tail hole is positioned between a center line of the main body portion in the vertical direction and a midpoint between the center line and the ventral edge of the target portion.

2. A pet diaper as described in claim 1, wherein the distance between the ventral edge of the tail hole and the center line is smaller than the distance between the dorsal edge of the tail hole and the midpoint in the vertical direction.

3. A pet diaper as described in claim 1 or 2, wherein the maximum opening width of the tail hole in the vertical direction is greater than the distance between the ventral edge of the tail hole and the center line of the main body portion in the vertical direction.

4. The slit further comprises upstanding leak-proof gathers arranged laterally outboard of the absorbent core, The pet diaper according to any one of claims 1 to 3, wherein the rear side standing fulcrum of the leakage-prevention gathers is located on the ventral side of the ventral edge of the tail hole.

5. The leak-proof gathers include a second elastic member extending in the vertical direction on the inner side of the horizontal direction than the elastic member, an upright portion which stands up due to contraction of the second elastic member, a first vertical fixing portion which serves as a fulcrum for the upright portion on the dorsal side, and a second vertical fixing portion which serves as a fulcrum for the upright portion on the ventral side; The pet diaper according to claim 4, wherein the first vertical fixed portion is disposed between the ventral edge of the tail hole and the dorsal edge of the absorbent core.

6. A pet diaper as described in claim 5, wherein the second vertical fixing portion is positioned on the abdominal side relative to the absorbent core.

7. The pet diaper according to any one of claims 1 to 6, wherein the dorsal edge of the absorbent core is positioned on the ventral side of the ventral edge of the tail hole.

8. The pet diaper according to any one of claims 1 to 7, wherein an opening width of the tail hole in the lateral direction continuously narrows toward the abdominal side.

9. The pet diaper according to any one of claims 1 to 8, wherein the elastic member extends beyond a central position of the tail hole in the longitudinal direction.

10. The pet diaper according to any one of claims 1 to 9, wherein the elastic member extends beyond the rear edge of the tail hole in the longitudinal direction.

11. A pet diaper as described in any one of claims 1 to 10, wherein when a virtual tail hole is set at a position that is linearly symmetrical to the tail hole with respect to the center line of the main body portion in the vertical direction, the elastic member extends beyond the ventral edge of the virtual tail hole.

12. A pet diaper as described in any one of claims 1 to 11, wherein the elastic member extends beyond the rear edges of the pair of fastening tabs in the vertical direction.

13. The pet diaper of claim 12, wherein the elastic member extends beyond the ventral edge of the target portion in the longitudinal direction.

14. The waist gathers are arranged on the ventral side of the back side edges of the pair of fastening tabs and are stretchable in the lateral direction. The pet diaper according to claim 12 or 13, wherein the elastic member extends beyond the rear edge of the waist gather.

15. Further comprising a leak-preventing gather disposed at a position outside the absorbent core in the lateral direction, The pet diaper according to any one of claims 1 to 14, wherein the elastic member is disposed at a position further outboard than the leakage-preventing gathers in the lateral direction.

16. The pet diaper according to claim 5 or 6, wherein an elongation ratio of the first elastic member is higher than an elongation ratio of the second elastic member.

17. The effective length of the telescopic member is greater than the effective length of the second telescopic member; The pet diaper according to claim 16, wherein a maximum opening width of the tail hole in the lateral direction is smaller than a distance between a center line of the main body portion in the lateral direction and an inner edge of the leakage-preventing gathers in the lateral direction.

18. A pet diaper as described in any one of claims 1 to 17, wherein the distance between the rear edge of the tail hole and the rear edge of the absorbent core in the vertical direction is greater than the distance between the lateral side edge of the tail hole and the elastic member in the horizontal direction.

Images