Underpants-type disposable diaper for pets

Abstract

An underpants-type disposable diaper (1) for pets, which has an up-down direction, a left-right direction, and a front-back direction that intersect each other, is provided with an absorbent main body (10) provided with an absorbent core (12), an abdomen-side waist-encircling section (20) positioned on the front side in the front-back direction, and a back-side waist-encircling section (30) positioned on the back side in the front-back direction, the abdomen-side waist-encircling part (20) and the back-side waist-encircling part (30) are joined by a pair of side joining parts (40), the absorbent main body (10) is provided with a tail insertion part (50) through which a tail can be inserted, and the underwear-type disposable diaper (1) for pets is characterized in that the absorbent core (12) is disposed on both sides of the tail insertion part (50) in the left-right direction.

Description

Technical Field

[0001] This invention relates to disposable diapers in the form of underwear for pets. Background Technology

[0002] Pet diapers for dogs or cats are known. For example, Patent Document 1 discloses a disposable underwear-type diaper for pets, which has a waist area, a crotch area, a waist opening, a pair of leg openings, an absorbent core and a tail insertion opening, and multiple elastic waist members are arranged in the waist area.

[0003] Prior art literature

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-226110 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] Patent Document 1 describes a disposable panty-style diaper for pets that improves fit by creating a low-stress area around the waist, preventing excessive constriction. However, when dressing dogs or cats, it's often difficult to guide the pet into the correct position while holding it in place. Specifically, with panty-style diapers, the pet's hind legs must first be inserted into the leg openings, then the tail into the tail opening, and finally, the diaper must be pulled up to fit the tail and waist. Therefore, research on the wearability of panty-style diapers for pets remains insufficient.

[0008] The present invention was made in view of the aforementioned problems, and its object is to provide a disposable diaper in the form of underwear for pets that improves wearability.

[0009] Solution for solving the problem

[0010] The main invention for achieving the above-mentioned objective is a disposable pet underwear-type diaper, which has intersecting vertical, horizontal, and front-back directions. The disposable pet underwear-type diaper includes: an absorbent body with an absorbent core; a ventral waistband located on the front side in the front-back direction; and a dorsal waistband located on the rear side in the front-back direction. The ventral waistband and the dorsal waistband are joined by a pair of lateral joints on both sides in the horizontal direction. The absorbent body is provided with a tail insertion portion for inserting a tail. The absorbent core is disposed on both sides of the tail insertion portion in the horizontal direction.

[0011] Other features of the invention will become apparent from the description and accompanying drawings.

[0012] The effects of the invention

[0013] According to the present invention, a disposable diaper in the form of underwear for pets can be provided, which improves wearability. Attached Figure Description

[0014] Figure 1 This is a schematic three-dimensional view of the pet underwear-type disposable diaper 1 viewed from the back side.

[0015] Figure 2 This is a rough top view of the diaper 1 in its unfolded and stretched state, viewed from the side of the skin.

[0016] Figure 3A yes Figure 2 A rough cross-sectional view at line I-I in the middle. Figure 3B yes Figure 2 A rough cross-sectional view at line II-II in the middle.

[0017] Figures 4A-4C These are diagrams illustrating the action of putting on diaper 1.

[0018] Figure 5A This is a schematic top view of a portion of the diaper 1 in its unfolded and stretched state, viewed from the side of the skin.

[0019] Figure 5B This is a schematic top view of a portion of the diaper 1 in its unfolded and stretched state, viewed from the side of the skin.

[0020] Figure 6 This is a schematic top view of a portion of the diaper 1 in its unfolded and stretched state, viewed from the side of the skin.

[0021] Figure 7 This is a diagram showing a modified example of the configuration of the narrowed portion 12C of the absorbent core 12.

[0022] Figure 8 This is a top view of the diaper 1 in its stretched state, viewed from the ventral side.

[0023] Figure 9 This is a rough top view of the diaper 1 in its unfolded and stretched state, viewed from the side of the skin.

[0024] Figure 10 This is a schematic three-dimensional view of diaper 1 in its underwear-like state, viewed from the back.

[0025] Figure 11A This diagram illustrates the configuration of the tail insertion part 50 and the absorbent core 12. Figure 11B This is a diagram illustrating the adhesive in the section from the tail insertion part 50 to the absorbent core 12.

[0026] Figure 12 This is a diagram showing a modified example of the configuration of the tail insertion part 50.

[0027] Figure 13A This is a schematic top view illustrating the fixing of the two ends of the leak-proof wall section 16 along its length.

[0028] Figure 13B yes Figure 13A A rough cross-sectional view at line III-III in the middle.

[0029] Figure 14 This is an illustrative diagram of a modified version of diaper 1. Detailed Implementation

[0030] Based on the description in this specification and the accompanying drawings, at least the following will become clear.

[0031] Method 1 is a disposable pet underwear-type diaper, which has intersecting vertical, horizontal, and front-back directions. The disposable pet underwear-type diaper includes: an absorbent body with an absorbent core; a ventral waistband located on the front side in the front-back direction; and a dorsal waistband located on the rear side in the front-back direction. The ventral waistband and the dorsal waistband are joined by a pair of lateral joints on both sides in the horizontal direction. The absorbent body is provided with a tail insertion portion for the tail to be inserted. The absorbent core is arranged on both sides of the tail insertion portion in the horizontal direction.

[0032] According to method 1, since there are absorbent cores on both sides of the tail insertion part in the left and right directions, the rigidity of both sides of the tail insertion part in the left and right directions is improved, making it easier to maintain the shape of the tail insertion part and making it easier to insert the tail.

[0033] Method 2 is a disposable pet underwear-type diaper as described in Method 1, wherein, in the unfolded and stretched state, the absorbent core and the back waistband have overlapping portions when viewed along the thickness direction of the disposable pet underwear-type diaper.

[0034] According to method 2, after the tail is inserted into the tail insertion part, when the dorsal side waist section is held and the diaper is pulled up, the force for pulling up is easily transmitted to the absorbent core because the dorsal side waist section and the absorbent core overlap, making it easier to pull up. This facilitates tail alignment.

[0035] Method 3 is a disposable pet underwear-type diaper as described in Method 1 or 2, wherein when the area between the pair of side joints in the back waistband is defined as the back side joint area, the absorbent core and the back side joint area have overlapping portions when viewed along the thickness direction of the disposable pet underwear-type diaper.

[0036] According to method 3, after the tail is inserted into the tail insertion part, when the back side waist area is held and the diaper is pulled up, the force for pulling up is easily transmitted to the absorbent core because the back side side joint area and the absorbent core overlap, making it easy to pull up. This facilitates tail alignment.

[0037] Method 4 is a disposable pet underwear-type diaper. This disposable pet underwear-type diaper has intersecting vertical, horizontal, and front-back directions. It includes: an absorbent body with an absorbent core; a ventral waistband located at the front in the front-back direction; and a dorsal waistband located at the rear in the front-back direction. The ventral waistband and the dorsal waistband are joined by a pair of lateral joints on both sides in the horizontal direction. The absorbent body has a tail insertion portion with a tail insertion portion for tail insertion. The absorbent core, in its unfolded and extended state, has a narrowing portion between its two ends in the length direction. The width of this narrowing portion in the horizontal direction is less than the maximum width of the absorbent core in the horizontal direction.

[0038] According to method 4, since the absorbent core has a narrowing section, when the diaper is pulled up, the absorbent core can be prevented from being hooked by the back leg which is bent in the shape of the Japanese character "く", making it easier for the diaper to fit correctly.

[0039] Method 5 is a disposable pet underwear-type diaper as described in Method 4, wherein, in the unfolded and stretched state, the narrowed portion and the abdominal waist portion overlap when viewed along the thickness direction of the disposable pet underwear-type diaper.

[0040] According to method 5, the area where the flank waist intersects with the absorbent core is the part most likely to be snagged by the legs when the hind legs are inserted into the diaper and pulled up. If there is an absorbent core in this area, it will easily hinder the pulling up. By setting a narrowing part of the absorbent core in this area, the rigidity of the absorbent core in this area is reduced, making it less likely to snag.

[0041] Method 6 is a disposable pet underwear-type diaper as described in Method 4, wherein, in the unfolded and stretched state, the narrowed portion and the abdominal waist portion do not overlap when viewed along the thickness direction of the disposable pet underwear-type diaper.

[0042] According to method 6, especially in cases where males use this diaper, due to the shape of male sex organs, urine is more easily excreted onto the ventral side than from the groin, requiring a reliable absorption area on the ventral side. By ensuring that the narrow section does not overlap with the ventral waistband, the width of the absorbent core on the ventral side is increased, preventing leakage.

[0043] Method 7 is a disposable pet underwear-type diaper as described in any one of methods 4 to 6, wherein, in the unfolded and extended state, one side of the disposable pet underwear-type diaper in the length direction corresponds to the front side, the other side in the length direction corresponds to the rear side, and the rear end of the narrowed portion is positioned closer to the rear side than the central position in the length direction of the disposable pet underwear-type diaper.

[0044] According to method 7, if the narrowing portion does not extend to the back (rear) side beyond the central position in the length direction, the pet's hind legs are prone to snagging on the absorbent core when moving, potentially creating a force that causes the diaper to shift. By extending the narrowing portion to the back side beyond the central position, it is less likely that snagging will occur when the hind legs move, thus reducing the force that could cause shifting.

[0045] Method 8 is a disposable diaper in the form of a pet underwear as described in Method 7, wherein, in the aforementioned length direction, for the aforementioned narrowed portion, the length from the aforementioned central position to the front end is greater than the length from the aforementioned central position to the aforementioned rear end.

[0046] According to method 8, at the narrowing section, by making the length from the center of the pet underwear-type disposable diaper to the front end longer, the movement of the legs is less obstructed on both the front (abdominal) and back (dorsal) sides, thus suppressing diaper shifting due to snagging with the absorbent core.

[0047] Method 9 is a disposable pet underwear-type diaper as described in any one of methods 1 to 8, wherein, in the stretched state and in the above-mentioned vertical direction, the length from the lower end of the side joint to the lower end of the disposable pet underwear-type diaper is greater than the length from the upper end of the side joint to the lower end.

[0048] According to method 9, the length from the lower end of the side joint to the lower end of the disposable pet underwear-type diaper is the length of the diaper's leg opening. This leg opening length makes it easy to insert the legs and pull them up. In addition, because the area covering the pet's waist is reduced, the diaper becomes more comfortable for the pet to wear.

[0049] Method 10 is a disposable diaper for pets in the form of underwear as described in any one of methods 1 to 9, wherein the abdominal waist member constituting the abdominal waist portion and the back waist member constituting the back waist portion are independent members, and in the extended state, the length of the abdominal waist member is less than the length of the back waist member in the vertical direction.

[0050] According to method 10, if the length of the abdominal waistband component is too long, it will hook with the waistband component when the hind leg is inserted, making it difficult for the leg to be inserted. However, by shortening the length of the abdominal waistband component, the situation where the leg is difficult to insert can be avoided.

[0051] Method 11 is a disposable diaper in the form of a pet underwear as described in Method 10, wherein, in the unfolded and extended state, the abdominal waistband member and the dorsal waistband member are rectangular in shape when viewed from above.

[0052] According to method 11, since the waist component is rectangular, the possibility of snagging when the hind legs are inserted can be further reduced.

[0053] Method 12 is a disposable pet underwear-type diaper as described in any one of methods 1 to 11, wherein, in the unfolded and extended state, when the area between the pair of side joints in the abdominal waistband is designated as the abdominal side joint area, and the area between the pair of side joints in the back waistband is designated as the back side joint area, the length of overlap between the abdominal side joint area and the absorbent body in the length direction of the disposable pet underwear-type diaper is greater than the length of overlap between the back side joint area and the absorbent body in the length direction.

[0054] According to method 12, especially when males use this disposable pet diaper, due to the morphology of male sex organs, urine is more easily excreted onto the ventral side compared to the groin. With the aforementioned configuration, the absorbent area on the ventral side is reliably ensured, and the contraction of the hairy dorsal side is less obstructed. Therefore, the diaper is less likely to shift and leak.

[0055] Method 13 is a disposable pet underwear-type diaper as described in any one of Methods 1 to 12, wherein, in the unfolded and extended state, when the area between the pair of side joints in the abdominal waistband is designated as the abdominal side joint area, and the area between the pair of side joints in the back waistband is designated as the back side joint area, the length by which the abdominal side joint area and the absorbent core overlap in the length direction of the disposable pet underwear-type diaper is greater than the length by which the back side joint area and the absorbent core overlap in the length direction.

[0056] According to method 13, especially when males use this diaper, due to the morphology of male sex organs, urine is more easily excreted to the ventral side than to the groin. With the above-described structure, the absorbent area on the ventral side is reliably ensured, and the contraction of the hairy dorsal side is not easily hindered. Therefore, the diaper is less likely to shift and leak.

[0057] Method 14 is a disposable diaper for pets in the form of underwear as described in any one of methods 1 to 13, wherein when the portion lower in the vertical direction than the pair of side joints is defined as the crotch area, the tail insertion portion is disposed on the lower side obtained by dividing the crotch area into two parts in the vertical direction.

[0058] According to method 14, the position of the tail insertion part can be adjusted to fit the pet's body size.

[0059] Method 15 is a disposable pet underwear-type diaper as described in any one of methods 1 to 14, wherein a post-treatment belt is provided on the non-skin side of the back waistband, the post-treatment belt being used to keep the disposable pet underwear-type diaper rolled up when it is disposed of after use.

[0060] According to method 15, most of the urine excreted into the diaper will flow to the front (abdominal) side of the diaper, which is closer to the crotch area. Therefore, after use, roll the diaper up with the abdominal waistband facing inward, and finally fix the post-treatment belt on the back side, so that post-treatment can be performed without contacting the urine.

[0061] Method 16 is a disposable pet underwear-type diaper as described in any one of methods 1 to 15, wherein the abdominal waistband and the back waistband each have a plurality of waistband elastic members that stretch in the left-right direction. In the unfolded state, the disposable pet underwear-type diaper has intersecting length, left-right and thickness directions. The disposable pet underwear-type diaper has a pair of leak-proof wall portions provided on both sides of the absorbent body in the left-right direction and able to stand upright toward the skin side in the thickness direction. For the pair of leak-proof wall portions, the abdominal end in the length direction is fixed by a pair of abdominal end fixing portions in a manner that prevents it from standing upright toward the skin side of the absorbent body, and the back end in the length direction is fixed by a pair of back end fixing portions in a manner that prevents it from standing upright toward the skin side of the absorbent body. In the length direction, the inner end of the abdominal end fixing portion is positioned inside the waistband elastic member located at the innermost side in the abdominal waistband.

[0062] According to method 16, by utilizing the contraction of the waist elastic member of the abdominal waist section, the leak-proof wall section can stand up to prevent leakage. If the abdominal end fixing part is located at a position outside the length direction of the waist elastic member that is the innermost part in the length direction of the abdominal waist section, it is difficult to stand up. However, by being positioned at a position inside the length direction of the waist elastic member that is the innermost part in the length direction, the leak-proof wall section can stand up easily.

[0063] Method 17 is a disposable diaper in the form of a pet underwear as described in Method 16, wherein the inner end of the aforementioned abdominal end fixing portion is positioned in the length direction at a position further inward than the inner end of the aforementioned abdominal waist portion.

[0064] According to method 17, the leak-proof wall can be raised to prevent leakage by utilizing the contraction of the waist elastic member of the abdominal waist section. If the abdominal end fixing part is located on the outer side in the length direction than the inner end of the abdominal waist section, it is difficult to raise it. However, if it is located on the inner side than the inner end of the abdominal waist section, the leak-proof wall can be raised easily.

[0065] Method 18 is a disposable pet underwear-type diaper as described in any one of methods 1 to 17, wherein the disposable pet underwear-type diaper has an indicator that changes color upon contact with excrement, and in the unfolded and extended state, the indicator is positioned such that it extends across the center of the length direction of the disposable pet underwear-type diaper.

[0066] According to method 18, by setting the indicator in the center across the length of the disposable pet underwear-type diaper, the changer can easily recognize the change of the indicator when the diaper is being worn.

[0067] Method 19 is a disposable pet underwear-type diaper as described in Method 18, wherein the aforementioned indicator and the aforementioned tail insertion portion have overlapping portions when viewed along the thickness direction of the aforementioned disposable pet underwear-type diaper.

[0068] According to method 19, by extending the indicator mark all the way to the position where it overlaps with the tail insertion part, the person replacing the indicator mark can more easily confirm the change of the indicator mark.

[0069] Method 20 is a disposable diaper in the form of a pet underwear as described in Method 18 or 19, wherein one side of the length direction corresponds to the front side, and the other side of the length direction corresponds to the rear side, and in the length direction, the rear end of the indicator is located closer to the front side than the rear end of the absorbent core.

[0070] According to method 20, by extending the indicator all the way to the vicinity of the rear end of the absorbent core, it is easier for the wearer to confirm changes in the indicator during use.

[0071] Method 21 is a disposable diaper of the type of underwear for pets as described in any one of methods 1 to 20, wherein, in the unfolded and extended state, the distance from the outer edge of the tail insertion portion to the absorbent core disposed on both sides of the tail insertion portion in the left-right direction is greater than the maximum thickness of the absorbent core.

[0072] According to method 21, by having a distance from the outer edge of the tail insertion portion to the absorbent core position, leakage due to breakage of the sheet member between the outer edge and the absorbent core can be prevented.

[0073] Method 22 is a disposable diaper for pets in the form of underwear as described in Method 21, wherein, in the interval from the outer edge of the tail insertion portion to the absorbent core disposed on both sides of the tail insertion portion in the left-right direction, there is a hot melt adhesive that bonds the non-skin side of the sheet member that is closer to the skin side than the absorbent core to the skin side of the sheet member.

[0074] According to method 22, by joining with a hot melt adhesive, the absorbent core is difficult to expose to the outside from the tail insertion part.

[0075] Method 23 is a disposable pet underwear-type diaper as described in any one of methods 1 to 22, wherein, in the unfolded and extended state, the absorbent core has a narrowing portion between the two ends in the length direction of the absorbent core, the width of the narrowing portion in the left-right direction is less than the maximum width of the absorbent core in the left-right direction, one side of the disposable pet underwear-type diaper in the length direction corresponds to the front side, the other side in the length direction corresponds to the rear side, and the rear end of the narrowing portion is located at a position closer to the front side than the rear end of the tail insertion portion.

[0076] According to method 23, if the narrowing portion is set beyond the rear end of the tail insertion portion, the presence of absorbent cores on both sides of the tail insertion portion in the left and right directions will decrease, potentially making it difficult to maintain the shape of the tail insertion portion. On the other hand, if the narrowing portion does not extend to the dorsal side, there is also a possibility that the absorbent cores may hinder leg movement. By setting the narrowing portion forward of the rear end of the tail insertion portion, it is easier to simultaneously maintain the shape of the tail insertion portion and facilitate leg insertion.

[0077] Method 24 is a disposable pet underwear-type diaper as described in any one of methods 1 to 22, wherein, in the unfolded and extended state, the absorbent core has a narrowing portion between the two ends of the absorbent core in the length direction, the width of the narrowing portion in the left-right direction is less than the maximum width of the absorbent core in the left-right direction, one side of the disposable pet underwear-type diaper in the length direction corresponds to the front side, the other side of the length direction corresponds to the rear side, and the tail insertion portion is disposed at a position closer to the rear side than the rear end of the narrowing portion.

[0078] According to method 24, since the tail insertion part and the narrowing part do not overlap, it can be ensured that the absorbent cores arranged on both sides of the tail insertion part in the left and right directions can easily transmit the pulling force to the surrounding area of ​​the tail insertion part when the diaper is pulled up.

[0079] Method 25 is a disposable pet underwear-type diaper as described in Method 24, wherein, in the length direction, the length from the rear end of the narrowed portion to the front end of the tail insertion portion is less than the length from the front end to the rear end of the tail insertion portion.

[0080] According to method 25, when the tail insertion portion and the narrowing portion do not overlap, it is easy to transmit a pulling force to the tail insertion portion. On the other hand, due to the narrowing portion, it is easy to match the leg openings of the diaper. Therefore, the narrowing portion is preferably provided to a position close to the tail insertion portion, thereby not easily hindering the movement of the legs.

[0081] ===Implementation Methods===

[0082] Hereinafter, the embodiments of the present invention, including disposable diapers in the form of underwear, will be described with reference to the accompanying drawings.

[0083] Figure 1 This is a schematic perspective view of the pet underwear-type disposable diaper 1 (hereinafter also referred to as "diaper 1") viewed from the back side. Figure 2 This is a rough top view of the diaper 1 in its unfolded and stretched state, viewed from the side of the skin. Figure 3A yes Figure 2 A rough cross-sectional view at line I-I in the middle. Figure 3B yes Figure 2 A rough cross-sectional view at line II-II in the middle.

[0084] Disposable pet diapers (underwear type 1) are diapers for pets. In this instruction manual, "pet" refers to any animal, including vertebrates and invertebrates, typically pets such as dogs, cats, rabbits, and hamsters.

[0085] The unfolded state of diaper 1 refers to the state in which the pair of lateral joints 40 on both sides of diaper 1 are separated from each other, and diaper 1 is opened and unfolded into a flat shape. The stretched state of diaper 1 refers to the state in which the elastic members of diaper 1 are stretched to the point that the wrinkles of diaper 1 are no longer discernible. Specifically, it means that the stretching continues until the dimensions of each component constituting diaper 1 are the same as or close to the dimensions of its individual components (i.e., the dimensions in the state where the elasticity of the components is not apparent).

[0086] Diaper 1 Figure 1 The diaper shown in its underwear-like configuration has vertical, horizontal, and front-back directions. The diaper 1 has a waist opening (BH) and a pair of leg openings (LH). Vertically, the waist side is designated as the upper side, and the crotch side as the lower side. Front-back, the side that will become the pet's abdomen is designated as the front side, and the side that will become the pet's back is designated as the back side. The horizontal direction follows the direction of the pet's waist. Furthermore, the diaper 1... Figure 3A as well as Figure 3B As shown, the direction in which the material layers constituting diaper 1 are laid is called the thickness direction. In the thickness direction, when worn, the side facing the pet's skin is designated as the skin side, and the opposite side is designated as the non-skin side. Furthermore, in Figure 2 In its unfolded state, the diaper 1 has intersecting length directions, left-right directions, and thickness directions. Figure 2 The center direction (referring to the direction running through the paper) is the vertical direction, which also runs from the pet's belly to its back. That is, one side of the length direction corresponds to the front side of the front-back direction, and the other side of the length direction corresponds to the back side of the front-back direction. The left-right direction corresponds to... Figure 1 The left and right directions are the same in the underwear-style state.

[0087] The diaper 1 has: an absorbent body 10; an abdominal waistband 20 covering the ventral side of the pet; and a dorsal waistband 30, which is a separate component from the abdominal waistband 20 and covers the dorsal side of the pet. Therefore, the diaper 1 of this embodiment is a so-called three-part type, in which the non-skin side of the absorbent body 10, which is lower than the abdominal waistband 20 and the dorsal waistband 30, is exposed to the outside.

[0088] like Figure 2 as well as Figure 3AAs shown, the non-skin side of the front end of the absorbent body 10 in the longitudinal direction is bonded to the skin side of the abdominal waistband 20 by an adhesive or the like, and the non-skin side of the rear end of the absorbent body 10 in the longitudinal direction is bonded to the skin side of the back waistband 30 by an adhesive or the like. From Figure 2 Starting with the diaper 1 in its unfolded state, the absorbent body 10 is folded in half with the abdominal waistband 20 and the back waistband 30 facing each other. The two sides of the abdominal waistband 20 and the two sides of the back waistband 30 are joined together by welding (e.g., heat welding or ultrasonic welding) to form a pair of side joints 40, thereby making the diaper 1 into an underwear type.

[0089] The absorbent core 10 comprises: an absorbent core 12 for absorbing excrement; a liquid-permeable top sheet 11 disposed on the skin side of the absorbent core 12; a liquid-impermeable back sheet 13 disposed on the non-skin side of the absorbent core 12; and an outer sheet 14, which are bonded together by an adhesive or the like. As the absorbent core 12, an example is a core body formed into a predetermined shape from a material containing a highly absorbent polymer in absorbent fibers such as pulp fibers. The absorbent core 12 may also be covered by a core-covering sheet 17 made of liquid-permeable thin paper or non-woven fabric. Furthermore, as the absorbent core 12, examples include a SAP sheet obtained by attaching a SAP layer to a hydrophilic sheet, or an air-laid sheet obtained by forming absorbent fibers into a sheet shape using an air-laid method.

[0090] Additionally, the absorbent body 10 has elastic leg members 15 (e.g., rubber cords) on both sides in the left-right direction that extend and retract in the length direction (up-down direction). Thus, the diaper 1 matches the pet's leg circumference.

[0091] Furthermore, the absorbent body 10 has a pair of leak-proof wall portions 16 on both sides in the left-right direction, which can stand upright towards the skin. As an example, in this embodiment, the pair of leak-proof wall portions 16 are bent at multiple locations along the length direction such that the two sides of the outer cover sheet 14 constituting the outer cover of the absorbent body 10 are located on the skin side of the top sheet 11. Figure 3B Furthermore, a leak-proof wall portion 16 is formed by providing a leak-proof wall elastic member 161 (e.g., a rubber rope) that extends and retracts along the length direction at the folded-back location.

[0092] like Figure 3AAs shown, the ventral waist portion 20 and the dorsal waist portion 30 each have: skin-friendly side panels 21 and 31 and non-skin-friendly side panels 22 and 32 made of soft non-woven fabric or the like; and multiple waist elastic members 23 and 33 (e.g., rubber cords) that extend and retract in the left-right direction. The multiple waist elastic members 23 and 33 are arranged at intervals in the vertical direction on the ventral waist portion 20 and the dorsal waist portion 30, and are fixed to the panels in a state of lateral extension. Therefore, the ventral waist portion 20 and the dorsal waist portion 30 can extend and retract in the left-right direction to match the pet's waist size.

[0093] In addition, such as Figure 2 As shown, in their unfolded and extended state, the abdominal waist member constituting the abdominal waist portion 20 and the back waist member constituting the back waist portion 30 are rectangular in shape when viewed from above. The vertical length of the abdominal waist portion 20 is approximately the same as the length of the side joint portion 40. The back waist portion 30 has: a waist side portion 30A that overlaps with the abdominal waist portion 20; and a crotch side portion 30B that extends downward (lower than the side joint portion 40) compared to the waist portion 20. Furthermore, the planar shapes of the abdominal waist member constituting the abdominal waist portion 20 and the back waist member constituting the back waist portion 30 can also be different. Additionally, the vertical lengths of the abdominal waist portion 20 and the back waist portion 30 can also be the same.

[0094] Additionally, the absorbent body 10 is provided with a tail insertion portion 50 through which a pet's tail can be inserted. The tail insertion portion 50 can be, for example, a generally U-shaped cut. However, the shape of the tail insertion portion 50 is not limited to a generally U-shaped shape; it can also be semi-circular, rectangular, trapezoidal, polygonal, or elliptical. Furthermore, when the tail insertion portion 50 is formed by a cut, it is not limited to the shapes described above; for example, it can be formed in a cross shape. The cut of the tail insertion portion 50 can be a continuous cut or a tear-resistant seam or similar structure that can tear the individual components constituting the cut (here, the top piece 11, the core covering piece 17, the back piece 13, and the outer piece 14). Additionally, other cuts may be provided to enlarge the size of the tail insertion portion 50. Furthermore, the tail insertion portion 50 is not limited to a cut; it can also be an opening through which the tail can be inserted. Details regarding the arrangement of the tail insertion portion 50 and the absorbent core 12 will be described later.

[0095] The above describes the basic structure of diaper 1, but the structure of diaper 1 is not limited to the above. For example, diaper 1 can also be a two-part type diaper, which can be formed by a single continuous component to create a ventral waistband 20 and a back waistband 30, and an outer component at the crotch area connecting the ventral waistband 20 and the back waistband 30. Furthermore, the waistband elastic component 23, 33 or the leg elastic component 15 may not be a rubber cord, but rather a sheet-like elastic component (elastic membrane or elastic nonwoven fabric).

[0096] <How to put on a disposable pet diaper (underwear type)>

[0097] Next, we will explain the actual actions involved in putting a diaper on a pet. Figures 4A-4C These are diagrams illustrating the action of putting on diaper 1. Figures 4A-4C The image shows a dog wearing diaper 1. First, the person changing the diaper lifts the pet's hind legs, and then... Figure 4A As shown, insert the hind legs one by one into the leg opening LH. Next, pull up the diaper 1 until it reaches near the pet's tail, as shown. Figure 4B As shown, insert the tail into the tail insertion part 50. Finally, as... Figure 4C As shown, pull the diaper 1 upwards and diagonally towards the front of the pet's body. While pulling it up, the person changing the diaper firmly holds the abdominal waist section 20 and the back waist section 30 and pulls them up to match the diaper 1 to the pet's waist. At the same time, pull the tail insertion section 50 up until the inside (root) of the tail is aligned.

[0098] Thus, when putting on pet underwear-type diapers for pets, not only the pet's hind legs but also the tail must be inserted into the tail insertion part 50. For example, when putting on healthy and active pets, it is often difficult to put them on correctly, and further research is needed on the wearability of pet underwear-type diapers.

[0099] Firstly, as the first issue, when wearing such a disposable underwear-type diaper, if there is no absorbent core 12 around the tail insertion part 50 after inserting the pet's hind legs into the leg opening LH, the shape of the tail insertion part 50 will be deformed, and there is a possibility that the tail will be difficult to insert.

[0100] Additionally, as a second topic, when dressing pets in disposable diapers (like underwear), such as... Figure 4C As shown, the diaper 1 needs to be pulled up diagonally upwards at the end. At this time, there is a problem that the absorbent core 12 may get caught on the pet's hind legs.

[0101] Firstly, regarding the first issue, in the diaper 1 of this embodiment, absorbent cores 12 are arranged on both sides of the tail insertion portion 50 in the left-right direction. Specifically, in this embodiment, as... Figure 3A as well as Figure 3B As shown, regions 12NX without the absorbent core 12 are provided at predetermined distances from the tail insertion portion 50 inwards and outwards. That is, by providing cuts in such regions 12NX to form the tail insertion portion 50, leakage of material constituting the absorbent core 12 from the tail insertion portion 50 is prevented. Furthermore, as... Figure 3B As shown, absorbent cores 12 are provided on both sides of the tail insertion portion 50 in the left-right direction, in the portion further out than region 12NX. By having absorbent cores 12 on both sides of the tail insertion portion 50 in the left-right direction, the rigidity of both sides of the tail insertion portion 50 in the left-right direction is increased, making it easier to maintain the shape of the tail insertion portion 50 and making it easier to insert the tail.

[0102] Figure 5A as well as Figure 5B This is a schematic top view of a portion of the diaper 1 in its unfolded and stretched state, viewed from the skin side. (See attached image.) Figure 5A As shown, in the diaper 1 of this embodiment, the absorbent core 12 and the back waistband 30 have overlapping portions when viewed along the thickness direction of the diaper 1. Figure 5A (The part indicated by a slash). When putting diaper 1 on the pet, after inserting the tail into the tail insertion part 50 (see...). Figure 4B The person changing the diaper uses their hand to grasp the back waistband 30 and pull up the diaper 1 (see reference). Figure 4C By having overlapping portions between the back waistband 30 and the absorbent core 12, the force required to pull up the diaper 1 is easily transmitted to the absorbent core 12. Furthermore, as described above, since absorbent cores 12 are also present on both sides of the tail insertion portion 50 in the left-right direction, the force required to pull up is also transmitted to the absorbent cores 12 on both sides of the tail insertion portion 50, making it easier to pull up the diaper in a more aligned position.

[0103] In addition, such as Figure 5B As shown, when the area between a pair of side joints 40 in the back waistband 30 of the diaper 1 of this embodiment is designated as the back side joint area 40BR, the absorbent core 12 and the back side joint area 40BR have an overlapping portion when viewed along the thickness direction of the diaper 1. Figure 5B The portion indicated by diagonal lines in the middle). The back side lateral joint area 40BR is specifically the area enclosed by the lateral joints 40 on both sides in the left and right directions, the upper end of the back waist section 30, and the lower end of the waist side section 30A. Figure 5B(The area enclosed by a bold double-dotted line). Furthermore, the dorsal lateral joint region 40BR is the area where the changing person directly applies pulling force when holding the dorsal waist section 30 and the ventral waist section 20 and pulling up the diaper 1 while wearing it. After inserting the tail into the tail insertion part 50, when the changing person holds the dorsal waist section 30 and pulls up the diaper, because the dorsal lateral joint region 40BR and the absorbent core 12 overlap, the pulling force is more easily transmitted to the absorbent core 12, making it easier to pull up. Therefore, the tail is easier to match.

[0104] Additionally, return Figure 2 Regarding the second issue mentioned above, the absorbent core 12 of this embodiment has a narrowing portion 12C between its two ends in the longitudinal direction, the width of which in the lateral direction is smaller than the maximum width of the absorbent core 12 in the lateral direction. This narrowing portion 12C is the part that is sandwiched between the pet's two hind legs when the pet is wearing the diaper 1. By reducing the width of this portion in the lateral direction, the absorbent core 12 easily fits between the pet's hind legs. Furthermore, due to the narrowing portion 12C, when worn, when... Figure 4C When you pull the diaper 1 up at an angle as shown, it is easy to avoid the absorbent core 12 getting caught on the back leg which is bent in the shape of the Japanese character "く".

[0105] In addition, such as Figure 2 As shown, the rear end 12Cb of the narrowing portion 12C of the absorbent core 12 is positioned rearward from the central position CL in the length direction of the diaper 1. If the narrowing portion 12C does not extend to a position rearward (back side) from the central position CL in the length direction, when the pet moves its hind legs, its legs may easily hook onto the absorbent core 12, potentially creating a force that causes the diaper 1 to shift. Therefore, by extending the narrowing portion 12C of the absorbent core 12 to a position backward from the central position CL in the length direction, it is less likely that a force causing shifting due to the legs hooking onto the absorbent core 12 will be applied when the pet moves its hind legs.

[0106] In addition, as in Figure 2 As shown, for the narrowing portion 12C of the absorbent core 12, the length L1 from the central position CL to the front end 12Ca in the longitudinal direction is greater than the length L2 from the central position CL to the rear end 12Cb. Since the front (ventral) side of the diaper 1 is prone to snagging on the pet's legs, by lengthening the portion (L1) of the narrowing portion 12C from the central position CL to the front (ventral) side, the movement of the legs is less likely to be obstructed on the front (ventral) side. With this configuration, the shifting of the diaper 1 due to snagging between the legs and the absorbent core 12 can be suppressed.

[0107] In addition, in this embodiment, such as Figure 2As shown, the rear end 12Cb of the narrowing portion 12C is located forward of the rear end 50eb of the tail insertion portion 50. If the narrowing portion 12C is set beyond the rear end 50eb of the tail insertion portion 50, the arrangement of the absorbent cores 12 on both sides of the tail insertion portion 50 in the left-right direction will be reduced, and it may be difficult to maintain the shape of the tail insertion portion 50. On the other hand, if the narrowing portion 12C does not extend towards the back from the central position CL, it may also be possible for the absorbent cores 12 to obstruct leg movement. By setting the narrowing portion 12C forward of the rear end 50eb of the tail insertion portion 50, it is easy to simultaneously maintain the shape of the tail insertion portion 50 and facilitate leg insertion.

[0108] Figure 6 This is a schematic top view of a portion of the diaper 1 in its unfolded and stretched state, viewed from the skin side. (See attached image.) Figure 6 As shown, the absorbent core 12 of the diaper 1 in this embodiment has a narrowing portion 12C, which overlaps with the abdominal waistband portion 20 when viewed along the thickness direction of the diaper 1. Figure 6 (The part indicated by a diagonal line). The area where the abdominal waist circumference 20 intersects with the absorbent body 10 ( Figure 6 The portion indicated by the bold arrow is the part most likely to be snagged by the legs when the diaper 1 is inserted and pulled up while wearing it. If there is an absorbent core 12 in this part, there is a possibility that it will hinder the pulling up. By providing a narrowing portion 12C of the absorbent core 12 in such a part as in this embodiment, the rigidity of the absorbent body 10 in this part is reduced, making it less likely to snag on the legs.

[0109] In addition, as described above, the narrowing portion 12C of this embodiment has a portion that overlaps with the abdominal waist portion 20 when viewed along the thickness direction, but it is not limited to this. Figure 7 This diagram shows a modified example of the configuration of the narrowed portion 12C of the absorbent core 12. In this modified example, the narrowed portion 12C and the ventral waist portion 20 are configured not to overlap when viewed along the thickness direction of the diaper 1. Especially in cases where males use the diaper 1, due to the shape of male sex organs, urine is more easily excreted in large quantities towards the ventral side compared to the crotch, requiring a reliable absorption area to be ensured on the ventral side. By ensuring that the narrowed portion 12C does not overlap with the ventral waist portion 20, the width of the absorbent core 12 on the ventral side is increased, making it easier to prevent leakage.

[0110] Figure 8 This is a top view of the diaper 1 in its stretched state, viewed from the ventral side. Preferably, as shown... Figure 8As shown, in the extended state, and in the vertical direction, the length L4 from the lower end 40dw of the side joint 40 to the lower end 1dw of the diaper 1 is greater than the length L3 from the upper end 40up of the side joint 40 to the lower end 40dw. This longer length L4 from the lower end 40dw of the side joint 40 to the lower end 1dw of the diaper 1, i.e., the longer leg opening of the diaper 1, makes it easier to insert the legs when wearing the diaper 1 and to pull it up. Furthermore, because the area covering the pet's waist is smaller, it becomes more comfortable for the pet to wear.

[0111] Furthermore, as described above, in this embodiment, the abdominal waist member constituting the abdominal waist portion 20 and the back waist member constituting the back waist portion 30 are independent components. And, as... Figure 8 As shown, in the vertical direction, the length L20 of the ventral waist member is less than the length L30 of the dorsal waist member. If the length of the ventral waist member (L20) is long, it will get caught on the waist member when the pet's hind legs are inserted, making it difficult to insert the legs. By setting the length of the ventral waist member (L20) to be short, the situation where it is difficult to insert the legs can be avoided.

[0112] Furthermore, in the diaper 1 of this embodiment, the abdominal waistband member constituting the abdominal waistband portion 20 and the back waistband member constituting the back waistband portion 30 are both rectangular in shape when viewed from above. These rectangular abdominal and back waistband members further reduce the possibility of snagging when the hind legs are inserted while wearing the diaper 1. However, the shapes of the abdominal and back waistband members are not limited to these shapes; for example, they can be any shape, such as having a roughly trapezoidal lower end in the vertical direction.

[0113] Figure 9 This is a rough top view of the diaper 1 in its unfolded and stretched state, viewed from the side of the skin. (See attached image.) Figure 9 As shown, here, the area between a pair of side joints 40 in the abdominal waistband 20 of the diaper 1 of this embodiment is defined as the abdominal side joint area 40FR. Specifically, the abdominal side joint area 40FR is the area enclosed by the side joints 40 on both sides in the left-right direction and the upper and lower ends of the abdominal waistband 20 (in... Figure 9 (The area enclosed by a bold double-dotted line on the ventral side). Furthermore, the back waist portion 30 also corresponds to the aforementioned... Figure 5BSimilarly, the area between a pair of side joints 40 is designated as the dorsal side joint region 40BR. Furthermore, preferably, as in the diaper 1 of this embodiment, the length L5 of the overlap between the ventral side joint region 40FR and the absorbent body 10 in the longitudinal direction is greater than the length L6 of the overlap between the dorsal side joint region 40BR and the absorbent body 10 in the longitudinal direction. Especially when the diaper 1 is used by males, due to the morphology of male sex organs, urine is more easily excreted in large quantities towards the ventral side compared to the groin. With this configuration, the absorbent area on the ventral side of the diaper 1 can be reliably ensured, while not easily hindering the contraction of the furry part of the pet, i.e., the dorsal side. Therefore, the diaper 1 is less prone to shifting and leakage.

[0114] Furthermore, regarding the ventral lateral junction region 40FR (dorsal lateral junction region 40BR) and the absorbent core 12, it is preferable that, as in this embodiment, the length L7 of the overlap between the ventral lateral junction region FR and the absorbent core 12 in the length direction of the diaper 1 is greater than the length L8 of the overlap between the dorsal lateral junction region BR and the absorbent core 12 in the length direction. With this configuration, as described above, even when worn by males, the absorbent area on the ventral side can be reliably ensured, and the contraction of the hairy dorsal side is less likely to be hindered. Therefore, the diaper 1 is less likely to shift and leakage is less likely to occur.

[0115] Figure 10 This is a simplified three-dimensional view of diaper 1 in its underwear-like configuration, viewed from the back. (See image below.) Figure 10 As shown, the portion of the diaper 1 located lower in the vertical direction than the pair of side joints 40 is designated as the crotch area MA. The dividing line DV1 is the line that divides the crotch area MA into two parts in the vertical direction. Furthermore, in the diaper 1, the tail insertion part 50 is preferably positioned on the lower side obtained by dividing the crotch area MA into two parts in the vertical direction. With this configuration, it is easy to achieve a position of the tail insertion part 50 that matches the body size of each pet.

[0116] In addition, such as Figure 2 , Figure 3A as well as Figure 10 As shown, on the non-skin side of the back waistband 30, a post-treatment belt 70 is provided for keeping the diaper 1 rolled up when it is disposed of after use. The post-treatment belt 70 is a generally rectangular strip member (belt member) that is longer in the vertical direction, and has a belt fixing part 71 on one side in the vertical direction (length direction). Figure 2The back-treatment tape 70 (represented by a diagonal line) has an adhesive portion 72 on the opposite side in the vertical (length) direction. The tape fixing portion 71 is formed of adhesive or the like, and the back-treatment tape 70 is fixed to the non-skin side of the non-skin side panel 32 of the back waistband 30 in a non-peelable manner by this tape fixing portion 71. Adhesive is applied to the adhesive portion 72. Before use of the diaper 1, a portion of the back-treatment tape 70 is folded so that the adhesive portion 72 faces inward, preventing the adhesive portion 72 from being exposed to the outside and protecting the adhesive surface of the adhesive portion 72.

[0117] When discarding a used diaper 1, the diaper 1, rolled up lengthwise with the absorbent body 10 inside, is stretched while unfolding the folded post-treatment strip 70 to expose the adhesive portion 72, which is then wrapped around the diaper 1 sideways. This keeps the diaper 1 rolled up, preventing excrement or other waste adhering to the inside of the diaper 1 (absorbent body 10) from leaking out during disposal. Since most of the urine excreted on the diaper 1 flows forward (abdominal side) compared to the crotch area, by providing the post-treatment strip 70 on the non-skin side of the back waistband 30, after use, the diaper can be rolled up with the abdominal waistband 20 inside, and the post-treatment strip 70 fixed on the back side, allowing the person changing the diaper to perform post-treatment without contact with the urine.

[0118] Figure 11A This diagram illustrates the configuration of the tail insertion part 50 and the absorbent core 12. Figure 11B This diagram illustrates the adhesive used in the section from the tail insertion part 50 to the absorbent core 12. Figure 11A For ease of explanation, only the absorbent core 12 and the tail insertion part 50 in the diaper 1 in its unfolded and extended states are shown in a general sense. Figure 3A as well as Figure 3B As shown, in the absorbent core 12, there are regions 12NX where the absorbent core 12 is absent, located at predetermined distances from the tail insertion portion 50 inwards and outwards. Figure 11A In the diagram, the region 12NX where the absorbent core 12 is absent is shown by an elliptical dashed line. The absorbent core 12 is absent in the portion further inward than this region 12NX. However, the range of the region 12NX where the absorbent core 12 is absent in this embodiment is an example and is not limited thereto. Nevertheless, in the left-right direction, the distance K1 from the outer edge of the tail insertion portion 50 to the absorbent cores 12 disposed on both sides of the tail insertion portion 50 in the left-right direction is preferably greater than the maximum thickness of the absorbent core 12. By having a distance K1 from the outer edge of the tail insertion portion 50 to the absorbent core 12, leakage due to breakage of the sheet members (in this embodiment, the top sheet 11, the core-covering sheet 17, the back sheet 13, and the outer sheet 14) between the outer edge and the absorbent core 12 can be prevented.

[0119] In addition, as a method for determining the maximum thickness of the absorbent core 12, for example, the portion of the diaper 1 in its unfolded state where the absorbent core 12 is present is first cut along the thickness direction, and a magnified photograph of the cut surface is taken using a digital microscope such as the Keyence VHX-1000. Based on this magnified photograph, the separation dimension from the skin-side end to the non-skin-side end of the absorbent core 12 is measured. The same measurement is performed on 10 portions, and the maximum value is set as the maximum thickness of the absorbent core 12.

[0120] exist Figure 11B The image further magnifies the area around the tail insertion portion 50, and also shows the area around it. Figure 11A Similarly, the region 12NX where the absorbent core 12 is absent is shown by an elliptical dashed line. (e.g.) Figure 11B As shown, in the region 12NX where the absorbent core 12 is absent, a hot-melt adhesive HMA is present to bond the non-skin side of the skin-side core-covering sheet 17a (the sheet member closer to the skin than the absorbent core 12) and the skin side of the non-skin-side core-covering sheet 17b (the non-skin-side sheet member) located on the non-skin side. Furthermore, in the case where the core-covering sheet 17 is not provided, in the region 12NX where the absorbent core 12 is absent, the non-skin side of the top sheet 11 and the skin side of the back sheet 13 are bonded by the hot-melt adhesive HMA.

[0121] Specifically, in the section from the outer edge of the tail insertion portion 50 in the left-right direction to the absorbent cores 12 disposed on both sides of the tail insertion portion 50 in the left-right direction (the section from the outer edge of the tail insertion portion 50 to the outer edge of region 12NX in the left-right direction), a hot melt adhesive HMA is also provided to bond the non-skin side of the skin-side core covering sheet 17a (the sheet member closer to the skin side than the absorbent core 12) to the skin side of the non-skin-side core covering sheet 17b (the sheet member on the non-skin side). By bonding the section from the outer edge of the tail insertion portion 50 to the absorbent core 12 with the hot melt adhesive HMA, the absorbent core 12 is less likely to leak out of the tail insertion portion 50. In addition, it is preferable to apply at least two strips of hot melt adhesive HMA in the section from the outer edge of the tail insertion portion 50 to the absorbent cores 12 disposed on both sides of the tail insertion portion 50 in the left-right direction. This configuration further prevents the material constituting the absorbent core 12 from escaping from the tail insertion portion 50.

[0122] Figure 12This diagram shows a modified example of the arrangement of the tail insertion portion 50. In this modified example, the absorbent core 12 also has a narrowing portion 12C. Furthermore, in this modified example, the tail insertion portion 50 is positioned rearward than the rear end 12Cb of the narrowing portion 12C. By ensuring that the tail insertion portion 50 does not overlap with the narrowing portion 12C, the absorbent cores 12 arranged on both sides of the tail insertion portion 50 in the left-right direction can be more effectively secured. Consequently, the pulling force transmitted to the absorbent core 12 when the diaper 1 is pulled up is also more easily transmitted to the area around the tail insertion portion 50.

[0123] Furthermore, in a configuration where the tail insertion portion 50 is positioned rearward than the rear end 12Cb of the narrowing portion 12C, as in this modified example, it is preferable that, in the length direction, the length L10 from the rear end 12Cb of the narrowing portion 12C to the front end 50ea of ​​the tail insertion portion 50 is less than the length L50 from the front end 50ea to the rear end 50eb of the tail insertion portion 50 (see reference). Figure 12 When the tail insertion portion 50 and the narrowing portion 12C do not overlap, it is easy to transmit a pulling force to the tail insertion portion 50. On the other hand, the leg openings of the diaper 1 are easily matched due to the presence of the narrowing portion 12C. Therefore, the narrowing portion 12C is preferably provided to a portion close to the tail insertion portion 50, thereby not easily hindering the movement of the legs.

[0124] Figure 13A This is a schematic top view illustrating the fixing of the two ends of the leak-proof wall section 16 along its length. Figure 13B yes Figure 13A A schematic cross-sectional view at line III-III. The leak-proof wall portion 16 of the absorbent body 10 is fixed at its longitudinal ventral (front) end using a pair of ventral end fixing portions 16Ex, 16Ex formed by an adhesive such as a hot-melt adhesive, in a manner that prevents it from rising towards the skin side of the absorbent body 10. For example... Figure 13B As shown, the ventral end fixing portion 16Ex has: a skin-side fixing portion 16Ea that fixes the skin-side portion 16ou, which is located on the skin side in the thickness direction, and a non-skin-side portion 16in, which is located on the non-skin side in the thickness direction, which is located closer to the skin side portion 16ou; and a non-skin-side fixing portion 16Eb that fixes the non-skin-side portion 16in of the leak-proof wall portion 16 to the top plate 11 by an adhesive or the like.

[0125] Similarly, the leak-proof wall portion 16 is fixed at its rear end in the longitudinal direction by a pair of rear end fixing portions 16Ey, 16Ey formed by an adhesive material such as a hot melt adhesive, in a manner that prevents it from standing upright towards the skin side of the absorbent body 10. Therefore, in the longitudinal direction, the portion of the outer piece 14 between the ventral end fixing portion 16Ex and the rear end fixing portion 16Ey is the portion where the leak-proof wall portion 16 can stand upright.

[0126] Furthermore, the diaper 1 of this embodiment is as follows: Figure 13A As shown, in the longitudinal direction, the inner end 16Exi of the abdominal end fixing portion 16Ex is positioned closer to the innermost waist elastic member 23mi among the multiple waist elastic members 23 disposed in the abdominal waist portion 2. When the diaper 1 is worn, the contraction of each waist elastic member 23 in the abdominal waist portion 20 causes the leak-proof wall portion 16 to stand up to prevent leakage. If the inner end 16Exi of the abdominal end fixing portion 16Ex of the leak-proof wall portion 16 is positioned further outward in the longitudinal direction (upper side in the vertical direction) than the innermost waist elastic member 23mi, the leak-proof wall portion 16 is difficult to stand up. However, by being positioned closer to the innermost waist elastic member 23mi (lower side in the vertical direction), the leak-proof wall portion 16 stands up easily.

[0127] Furthermore, the position of the abdominal end fixing portion 16Ex is not limited to the position described above. For example, the inner end 16Exi of the abdominal end fixing portion 16Ex may also be positioned in the longitudinal direction further inward than the inner end 20ei of the abdominal waist portion 20. By positioning the inner end 16Exi of the abdominal end fixing portion 16Ex further in the longitudinal direction, the leak-proof wall portion 16 is easier to stand upright, thus preventing leakage.

[0128] Figure 14 This is an illustrative diagram of a modified version of diaper 1. In Figure 14 In a modified example, the diaper 1, in its unfolded and stretched state, also includes an indicator mark 80. This indicator mark 80 is disposed along the length direction at the center of the absorbent body 10 in the left-right direction and changes color upon contact with excrement. Specifically, the indicator mark 80 is a detection part for detecting at least one of urine and feces, and is preferably provided in the thickness direction between the absorbent core 12 and the backing sheet 13. The indicator mark 80 can be a conventional indicator mark containing a pH indicator agent, as used in conventional diapers. For example, the pH of the excrement is used as a reaction factor, and a color reaction occurs upon contact with urine or feces, thereby detecting the excretion of urine or feces. That is, the indicator mark 80 contains pigment, and a color change occurs through the color development of this pigment, allowing the wearer to detect the excretion of urine or feces.

[0129] In this modified example, two indicator marks 80 spaced apart in the left and right directions are arranged along the length direction. However, the arrangement or number of indicator marks 80 can be appropriately changed according to the type (urine or feces) or amount of excrement being detected. Furthermore, the indicator marks 80 are preferably positioned in the diaper 1 at a central position CL spanning the length direction. By arranging the indicator marks 80 at a central position CL spanning the length direction, changes in the indicator marks 80 are easily identifiable when the pet is wearing the diaper 1.

[0130] In addition, Figure 14 In a modified example, the indicator mark 80 and the tail insertion part 50 are in the thickness direction of the diaper 1 ( Figure 14 The overlapping parts are visible when viewed from the direction that runs through the paper. Since diaper 1 is a pet diaper, the waistband on the abdomen is facing down when worn, making it difficult to discern changes in the indicator mark 80 on the abdomen. Therefore, by extending the indicator mark 80 to overlap with the tail insertion part 50, it is easier for the person changing the diaper to confirm changes in the indicator mark 80 when the pet is wearing diaper 1.

[0131] Additionally, the indicator sign 80 is preferably configured to be in Figure 14 In the extended and unfolded states shown, the rear end 80eb of the indicator mark 80 is positioned forward of the rear end 12eb of the absorbent core 12. Since the indicator mark 80 is used to detect the discharge of urine or feces, it does not need to be positioned beyond the area where the absorbent core 12 is located. However, when the indicator mark 80 extends to a position close to the rear end 12eb of the absorbent core 12, the user can more easily identify changes in the indicator mark 80.

[0132] ===Other===

[0133] The above-described embodiments are intended to facilitate understanding of the present invention and are not intended to limit the interpretation of the invention. The present invention can be modified and improved without departing from its concept, and its equivalents are naturally included.

[0134] In the above-described embodiment, in the unfolded and extended state of the diaper 1, the absorbent core 12 is disposed not only on both sides of the tail insertion portion 50 in the lateral direction, but also on both sides (front and rear) in the longitudinal direction. However, this is not a limitation. For example, the tail insertion portion 50 may be configured without the absorbent core 12 on the rear side (back side) in the longitudinal direction. That is, the tail insertion portion 50 may be formed in a shape in which the rear end 50e of the tail insertion portion 50 extends to the rear end of the absorbent core 12. If the absorbent core 12 is not present around the tail insertion portion 50, the shape of the tail insertion portion 50 will be distorted, making it difficult to insert the tail. However, if the absorbent core 12 is disposed on both sides of the tail insertion portion 50 in the lateral direction and on the front side (ventral side) in the longitudinal direction, the shape of the tail insertion portion 50 can be maintained when the diaper 1 is worn.

[0135] Explanation of reference numerals in the attached figures

[0136] 1. Disposable diapers (underwear type) for pets

[0137] 1dw lower end

[0138] 10 Absorbent Subject

[0139] 11 Top Film

[0140] 12 Absorbent Core

[0141] 12C Narrowing section

[0142] 12Ca front end

[0143] 12Cb backend

[0144] 13 Backing film

[0145] 14 outer packaging plates

[0146] 15. Leg circumference elastic component

[0147] 16 Leak-proof wall section

[0148] 16Ea Skin-side fixation point

[0149] 16Eb Non-skin side fixation portion

[0150] 16Ex ventral end fixing part

[0151] 16Exi internals

[0152] 16Ey Backside End Fixing Part

[0153] 16-inch non-skin side

[0154] 16ou Side of skin

[0155] 17-core coated sheet

[0156] 17a Skin Side Core Covering Patch

[0157] 17b Non-skin-side core-covered tablet

[0158] 20. Waist circumference on the abdomen

[0159] 20ei inner end

[0160] 21 Side view of skin

[0161] 22 Non-skin side panels

[0162] 23. Waist elastic component

[0163] 30 Back and waist area

[0164] 30A Waist and Side

[0165] 30B Crotch Side

[0166] 31 Side view of skin

[0167] 32 Non-skin side panels

[0168] 33. Waist elastic component

[0169] 40 Lateral joint

[0170] 40BR dorsal and lateral joint area

[0171] 40dw lower end

[0172] 40FR Ventral-lateral junction area

[0173] 40up upper

[0174] 50 Tail insertion part

[0175] 50ea front-end

[0176] 50eb backend

[0177] 70 Post-processing belt

[0178] 71 with fixing part

[0179] 72 Adhesion section

[0180] 80 Indicator Sign

[0181] 80eb backend

[0182] 161 Leak-proof wall elastic component

Claims

1. A disposable diaper in the form of underwear for pets, the disposable diaper having intersecting vertical, horizontal, and front-back directions. The above-mentioned disposable diapers for pets in the form of underwear include: An absorbent body having an absorbent core; a ventral waist portion located on the front side in the aforementioned front-rear direction; and a back waist portion located on the rear side in the aforementioned front-rear direction. On both sides in the aforementioned left-right direction, the aforementioned abdominal waist portion and the aforementioned back waist portion are joined by a pair of lateral joints. The absorbent body is provided with a tail insertion portion through which the tail can be inserted, characterized in that, The absorbent cores are arranged on both sides of the tail insertion part in the left and right directions.

2. The disposable pet underwear-type diaper as described in claim 1, characterized in that, In its unfolded and extended state, the absorbent core and the back waistband overlap when viewed along the thickness direction of the disposable pet underwear-type diaper.

3. The disposable pet underwear-type diaper as described in claim 1 or 2, characterized in that, When the area between the pair of side joints in the back waistband is defined as the back side joint area, the absorbent core and the back side joint area overlap when viewed along the thickness direction of the disposable diaper for pet underwear.

4. A disposable diaper in the form of underwear for pets, wherein the disposable diaper has intersecting vertical, horizontal, and front-back directions. The above-mentioned disposable diapers for pets in the form of underwear include: An absorbent body having an absorbent core; a ventral waist portion located on the front side in the aforementioned front-rear direction; and a back waist portion located on the rear side in the aforementioned front-rear direction. On both sides in the aforementioned left-right direction, the aforementioned abdominal waist portion and the aforementioned back waist portion are joined by a pair of lateral joints. The absorbent body described above is characterized by having a tail insertion portion having a tail insertion portion through which a tail can be inserted. In its unfolded and elongated state, the absorbent core has a narrowing portion between its two ends in the longitudinal direction, and the width of the narrowing portion in the left-right direction is less than the maximum width of the absorbent core in the left-right direction.

5. The disposable pet underwear-type diaper as described in claim 4, characterized in that, In its unfolded and extended state, the aforementioned narrowed portion and the aforementioned ventral waist portion overlap when viewed along the thickness direction of the aforementioned disposable pet underwear-type diaper.

6. The disposable pet underwear-type diaper as described in claim 4, characterized in that, In its unfolded and extended state, the aforementioned narrowed portion and the aforementioned ventral waist portion do not overlap when viewed along the thickness direction of the aforementioned disposable pet underwear-type diaper.

7. The disposable pet diaper in the form of underwear as described in any one of claims 4 to 6, characterized in that, In its unfolded and extended state, one side of the aforementioned disposable pet underwear-type diaper along its length corresponds to the front side, and the other side along its length corresponds to the rear side. The rear end of the aforementioned narrowed portion is positioned further back than the center position along the length of the aforementioned disposable pet underwear-type diaper.

8. The disposable pet underwear-type diaper as described in claim 7, characterized in that, In the aforementioned length direction, for the aforementioned narrowing portion, the length from the aforementioned central position to the front end is greater than the length from the aforementioned central position to the aforementioned rear end.

9. The disposable pet diaper in the form of underwear as described in any one of claims 1 to 8, characterized in that, In the extended state, and in the aforementioned vertical direction, the length from the lower end of the aforementioned side joint to the lower end of the aforementioned pet underwear-type disposable diaper is greater than the length from the upper end of the aforementioned side joint to the aforementioned lower end.

10. The disposable pet underwear-type diaper as described in any one of claims 1 to 9, characterized in that, The abdominal waistband component constituting the aforementioned abdominal waistband portion and the back waistband component constituting the aforementioned back waistband portion are independent components. In the extended state, and in the aforementioned vertical direction, the length of the abdominal waist member is less than the length of the back waist member.

11. The disposable pet underwear-type diaper as described in claim 10, characterized in that, In the unfolded and extended state, the aforementioned ventral waist member and the aforementioned dorsal waist member are rectangular in shape when viewed from above.

12. The disposable pet diaper in the form of underwear as described in any one of claims 1 to 11, characterized in that, In the unfolded and extended state, when the area between the pair of lateral joints in the aforementioned abdominal waist portion is defined as the abdominal lateral joint area, and the area between the pair of lateral joints in the aforementioned back waist portion is defined as the back lateral joint area, The length by which the aforementioned ventral side joint region overlaps with the aforementioned absorbent body in the length direction of the aforementioned pet underwear-type disposable diaper is greater than the length by which the aforementioned dorsal side joint region overlaps with the aforementioned absorbent body in the aforementioned length direction.

13. The disposable pet underwear-type diaper as described in any one of claims 1 to 12, characterized in that, In the unfolded and extended state, when the area between the pair of lateral joints in the aforementioned abdominal waist portion is defined as the abdominal lateral joint area, and the area between the pair of lateral joints in the aforementioned back waist portion is defined as the back lateral joint area, The length by which the aforementioned ventral side joint region overlaps with the aforementioned absorbent core in the length direction of the aforementioned pet underwear-type disposable diaper is greater than the length by which the aforementioned dorsal side joint region overlaps with the aforementioned absorbent core in the aforementioned length direction.

14. The disposable pet underwear-type diaper as described in any one of claims 1 to 13, characterized in that, When the portion that is lower in the vertical direction than the aforementioned pair of lateral joints is defined as the crotch area, The aforementioned tail insertion part is disposed on the lower side, which is obtained by dividing the aforementioned crotch area into two parts in the aforementioned vertical direction.

15. The disposable pet underwear-type diaper as described in any one of claims 1 to 14, characterized in that, A post-treatment belt is provided on the non-skin side of the back waistband, which is used to keep the disposable pet underwear-type diaper rolled up when it is disposed of after use.

16. The disposable pet diaper in the form of underwear as described in any one of claims 1 to 15, characterized in that, The aforementioned abdominal waist section and the aforementioned back waist section each have multiple elastic waist members that extend and retract in the aforementioned left-right direction. In its unfolded state, the aforementioned disposable pet underwear-style diapers have intersecting length, lateral, and thickness directions. The aforementioned disposable diaper for pets has a pair of leak-proof walls located on both sides of the absorbent body in the left-right direction and able to stand upright towards the skin side in the thickness direction. For the aforementioned pair of leak-proof wall portions, the ventral end portion in the longitudinal direction is fixed by a pair of ventral end fixing portions in a manner that prevents it from standing upright towards the skin side of the absorbent body, and the dorsal end portion in the longitudinal direction is fixed by a pair of dorsal end fixing portions in a manner that prevents it from standing upright towards the skin side of the absorbent body. In the aforementioned length direction, the inner end of the aforementioned ventral end fixing portion is positioned further inward than the aforementioned waist elastic member located at the innermost side in the aforementioned ventral waist portion.

17. The disposable pet underwear-type diaper as described in claim 16, characterized in that, The inner end of the aforementioned abdominal end fixing portion is positioned in the length direction at a position that is more inward than the inner end of the aforementioned abdominal waist portion.

18. The disposable pet diaper in the form of underwear as described in any one of claims 1 to 17, characterized in that, The aforementioned disposable pet diapers in the form of underwear have a color-changing indicator that changes color upon contact with excrement. In its unfolded and extended state, the aforementioned indicator is positioned at the center of the length of the aforementioned disposable pet underwear-type diaper.

19. The disposable pet underwear-type diaper as described in claim 18, characterized in that, The aforementioned indicator and the aforementioned tail insertion portion overlap when viewed along the thickness direction of the aforementioned disposable pet underwear-type diaper.

20. The disposable pet underwear-type diaper as described in claim 18 or 19, characterized in that, One side along the aforementioned length direction corresponds to the aforementioned front side, and the other side along the aforementioned length direction corresponds to the aforementioned rear side. In the aforementioned length direction, the rear end of the aforementioned indicator is located at a position closer to the front side than the rear end of the aforementioned absorbent core.

21. The disposable pet underwear-type diaper as described in any one of claims 1 to 20, characterized in that, In the unfolded and extended state, the distance from the outer edge of the tail insertion portion to the absorbent core disposed on both sides of the tail insertion portion in the left-right direction is greater than the maximum thickness of the absorbent core.

22. The disposable pet underwear-type diaper as described in claim 21, characterized in that, In the interval from the outer edge of the aforementioned tail insertion portion to the absorbent core disposed on both sides of the aforementioned tail insertion portion in the left-right direction, there is a hot melt adhesive that bonds the non-skin side of the sheet member that is closer to the skin side than the absorbent core to the skin side of the sheet member.

23. The disposable pet underwear-type diaper as described in any one of claims 1 to 22, characterized in that, In the unfolded and elongated state The absorbent core has a narrowing portion between its two ends along its length, and the width of this narrowing portion in the left-right direction is smaller than the maximum width of the absorbent core in the left-right direction. The aforementioned disposable pet underwear-style diaper has one side along its length corresponding to the front side, and the other side along its length corresponding to the back side. The rear end of the aforementioned narrowing portion is located at a position closer to the front side than the rear end of the aforementioned tail insertion portion.

24. The disposable pet underwear-type diaper as described in any one of claims 1 to 22, characterized in that, In the unfolded and elongated state The absorbent core has a narrowing portion between its two ends along its length, and the width of this narrowing portion in the left-right direction is smaller than the maximum width of the absorbent core in the left-right direction. The aforementioned disposable pet underwear-style diaper has one side along its length corresponding to the front side, and the other side along its length corresponding to the back side. The aforementioned tail insertion portion is positioned at a position relative to the rear side of the aforementioned narrowing portion.

25. The disposable pet underwear-type diaper as described in claim 24, characterized in that, In the aforementioned length direction, the length from the rear end of the aforementioned narrowed portion to the front end of the aforementioned tail insertion portion is less than the length from the front end of the aforementioned tail insertion portion to the rear end.

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