Absorbent panty-type items

The pant-type absorbent article addresses the issue of insect bites on legs by strategically placing insect repellent microcapsules in lower torso sections and leg openings, ensuring effective repellent distribution and release, thereby preventing bites.

JP7877083B2Inactive Publication Date: 2026-06-22UNI CHARM CORP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
UNI CHARM CORP
Filing Date
2022-06-22
Publication Date
2026-06-22
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing absorbent articles, particularly pant-type articles, fail to effectively prevent insect bites on the legs of active users such as older infants and the elderly due to inadequate positioning and distribution of insect repellents.

Method used

A pant-type absorbent article with insect repellent microcapsules strategically placed in specific regions, including the lower torso sections and leg openings, ensuring higher repellent concentration near the legs and efficient release through non-stretchable areas and markers for easy application.

Benefits of technology

Effectively prevents insect bites on the legs by ensuring adequate repellent distribution and release, enhancing protection for active users.

✦ Generated by Eureka AI based on patent content.

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Abstract

To effectively prevent insect bites in a wearer of a pants-type absorbent article. [Solution] A pants-type absorbent article (1) having a pair of waist-surrounding portions (1F, 1B) and a crotch portion (1C), with both left and right side portions of each of the pair of waist-surrounding portions (1F, 1B) joined by a pair of joining portions (2), each of which has an upper region (1FU, 1BU) and a lower region (1FL, 1BL) when the waist-surrounding portion (1F, 1B) is divided into two in the upper and lower directions in a stretched state, and is characterized in that an insect repellent (40) is provided in the lower region (1FL, 1BL) of at least one of the pair of waist-surrounding portions.
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Description

Technical Field

[0001] The present invention relates to a pant-type absorbent article.

Background Art

[0002] Patent Document 1 discloses applying insect-proof microcapsules formed by microencapsulating a natural plant extract showing an insect-proof effect to an absorbent article including a liquid-permeable topsheet, an absorbent core, and a liquid-impermeable backsheet. Specifically, a form of applying insect-proof microcapsules to the backsheet is disclosed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The applicant of the present application has focused on suppressing insect bites during wearing of the absorbent article. In contrast, Patent Document 1 aims to prevent pests from invading the absorbent article during the processes of distribution and storage. Therefore, the specific attachment position of the insect-proof microcapsules on the backsheet is not disclosed, and the effect of suppressing insect bites during wearing of the absorbent article is insufficient. [[ID=CO]] In addition, absorbent articles such as diapers include tape-type absorbent articles and pant-type absorbent articles. The primary users of tape-type absorbent articles are infants and the elderly who spend most of their time lying down. On the other hand, the primary users of pant-type absorbent articles are older infants who are more active, crawling and walking, and the elderly who are not bedridden. The applicant focused on the difference in movement patterns between users of tape-type and pant-type absorbent articles and conducted intensive research. As a result, it was found that users of tape-type absorbent articles are more likely to be bitten by insects on their faces than on their legs, while users of pant-type absorbent articles are more likely to be bitten by insects on their legs (especially their thighs and shins) than on their faces.

[0005] This invention has been made in view of the above-mentioned problems, and its purpose is to effectively prevent insect bites in wearers of absorbent pants. [Means for solving the problem]

[0006] The main invention for achieving the above objective is: It has vertical, horizontal, and front-to-back directions, A pair of pants-type absorbent articles having a pair of waist sections and a crotch section, wherein the left and right sides of each of the pair of waist sections are joined by a pair of joints, Having an absorbent body, The pair of torso sections each have a connecting portion for joining the left and right ends of each section, When viewed from above in the unfolded state, the central position of the pant-type absorbent article in the longitudinal direction of the absorbent body is used as a reference. Among the absorbent bodies When the portion on one side in the longitudinal direction is defined as the one-side existence region, The side portion of the one-sided region which is part of the peripheral edge along the leg opening Insect repellents are provided there. In a plan view, and in the longitudinal direction, The other end of the joint in the longitudinal direction is located on the other side of the region existing on the one side in the longitudinal direction, The aforementioned central position is located on the other side of the other end of the joint in the longitudinal direction, Regarding the one-sided region as viewed from above, the region from the one-sided end of the one-sided region in the longitudinal direction to the other-sided end of the joint in the longitudinal direction. The aforementioned repellent is not placed there. In the one-side presence region when viewed in plan view Regarding, The region from the other end of the joint in the longitudinal direction to the central position for, The repellent Placed It is a pant-type absorbent article characterized by this. Other features of the present invention will be clarified by the description in this specification and the accompanying drawings.

Effects of the Invention

[0007] According to the present invention, it is possible to effectively prevent the wearer of the pant-type absorbent article from being stung by insects.

Brief Description of the Drawings

[0008] [Figure 1] It is a schematic perspective view of the pant-type disposable diaper 1. [Figure 2] It is a schematic plan view of the diaper 1 in the unfolded and stretched state as viewed from the skin side. [Figure 3] It is a schematic cross-sectional view taken along line AA in FIG. 2. [Figure 4] It is an explanatory view of the repellent arrangement region 41. [Figure 5] It is an explanatory view of the repellent arrangement region 41. [Figure 6] FIGS. 6A and 6B are explanatory views of the repellent arrangement region 41 of a modification of the first embodiment. [Figure 7] FIGS. 7A and 7B are explanatory views of the repellent arrangement region 41 of the second embodiment. [Figure 8] It is an explanatory view of the repellent arrangement region 41 of the second embodiment.

Mode for Carrying Out the Invention

[0009] From the description in this specification and the accompanying drawings, at least the following matters will become clear. A pant-type absorbent article having an up-down direction, a left-right direction, and a front-back direction, and having a pair of torso surrounding portions and a lower crotch portion, wherein both sides of each of the pair of torso surrounding portions in the left-right direction are joined at a pair of joining portions, each of the torso surrounding portions having an upper region and a lower region when the torso surrounding portion is divided into two in the up-down direction in an extended state, and an insect repellent being provided in the lower region of at least one of the pair of torso surrounding portions.

[0010] According to such a pant-type absorbent article, a repellent is provided at a portion of the pant-type absorbent article close to the wearer's legs, and the repellent can be released around the wearer's legs. Therefore, it is possible to effectively prevent insect bites of the wearer of the pant-type absorbent article who is likely to be stung by insects.

[0011] Such a pant-type absorbent article, wherein in the torso surrounding portion provided with the repellent, the basis weight of the repellent in the lower region is higher than the basis weight of the repellent in the upper region.

[0012] According to such a pant-type absorbent article, more repellent is provided at a portion of the pant-type absorbent article close to the wearer's legs. Therefore, it is possible to effectively prevent insect bites of the wearer of the pant-type absorbent article who is likely to be stung by insects.

[0013] Such a pant-type absorbent article having an absorbent body and an outer member disposed on the non-skin side of the absorbent body, the outer member having an elastic member that expands and contracts in the left-right direction in the torso surrounding portion, each of the torso surrounding portions having a non-expandable region where the elastic member cannot expand and contract in the region where the absorbent body is located, and at least a part of the repellent being provided in the non-expandable region of the torso surrounding portion.

[0014] <000011​

[0015] The pants-type absorbent article is characterized in that the repellent is encapsulated in a plurality of microcapsules, the waist portion on which the repellent is provided has a marker portion indicating the area on which the repellent is provided, and at least a portion of the repellent is provided on the same side in the front-to-back direction in the area where the non-stretchable portion and the marker portion overlap in the front-to-back direction.

[0016] With this type of pant-style absorbent material, the visibility of the marker located in the non-stretchable area, where wrinkles are less likely to occur due to the elastic material, is improved. Furthermore, because the repellent is provided in the non-stretchable area (absorbent body), the highly rigid absorbent core acts as a base, making it easier for the user to rub the marker. As a result, the microcapsules break more efficiently, and the repellent is released more easily.

[0017] The pants-type absorbent article is characterized in that it has an absorbent core that absorbs excrement, and at least a portion of the repellent is provided in the area around the waist where the absorbent core is located.

[0018] With these types of absorbent pants, the repellent is less likely to pass through the absorbent core and be released to the skin, but is more likely to be released to the outside, thus producing an insect-repellent effect.

[0019] The absorbent pant-type article is characterized in that multiple regions where the repellent is provided are arranged in a row with spacing between them in the vertical direction.

[0020] With this type of absorbent pant, it is possible to apply the repellent to a wide area in the vertical direction of the absorbent pant while keeping the amount of repellent to a minimum. Therefore, an insect-repellent effect is generated over a wide area in the vertical direction of the absorbent pant.

[0021] The absorbent pant-type article is characterized in that multiple areas on which the repellent is provided are arranged in a row with spacing between them in the left-right direction.

[0022] With this type of absorbent pant, it is possible to apply the repellent to a wide area in the left-right direction of the absorbent pant while keeping the amount of repellent to a minimum. Therefore, an insect-repellent effect is generated over a wide area in the left-right direction of the absorbent pant.

[0023] The pants-type absorbent article is characterized in that it has an absorbent core that absorbs excrement, and the repellent is provided in the area around the waist where the absorbent core is not located.

[0024] With these types of absorbent pants, it is possible to prevent the repellent's effectiveness from being reduced by the odor of the excrement absorbed by the absorbent core.

[0025] The absorbent pant-type article is characterized in that, in the lower region of the waist area, the region where the repellent is provided is continuously provided in the left-right direction from a position overlapping the left joint in the front-rear direction to a position overlapping the right joint in the front-rear direction.

[0026] With this type of absorbent pant, since the repellent is provided at the seam, the repellent is located at the highest point of the leg opening of the absorbent pant, that is, the part where the legs are most exposed, thereby enhancing the insect-repellent effect around the wearer's legs.

[0027] The absorbent pant-type article is characterized in that the left end of the area where the repellent is provided is located to the right of the right end of the left joint, and the right end of the area where the repellent is provided is located to the left of the left end of the right joint.

[0028] With these pant-type absorbent items, the repellent is not placed at the seams that tend to protrude when worn, thus suppressing the adhesion of the repellent to the wearer's clothing.

[0029] The pants-type absorbent article comprises an absorbent body and an outer covering member positioned on the non-skin side of the absorbent body, wherein the outer covering member has an extension portion extending downward from at least one of the pair of waist portions, and the repellent is also provided on the extension portion.

[0030] With this type of absorbent pant, insect repellent is added to the part of the absorbent pant closest to the wearer's legs, thus effectively preventing insect bites on the wearer's legs.

[0031] The absorbent pant-type article is characterized in that, in the lower region of the waist portion, the region where the repellent is provided is located above and spaced apart from the lower end of the waist portion.

[0032] With this type of absorbent pant, even if the lower edge of the waistband rolls up due to the wearer's leg movements, the area where the repellent is applied is less likely to be covered by the rolled-up portion. Therefore, the repellent is more easily released to the outside, resulting in an insect-repellent effect.

[0033] The absorbent pant-type article is characterized in that each waist portion has an expandable / contractible region made of an elastic member that expands / contracts in the left-right direction, and in the waist portion where the repellent is provided, the expandable / contractible region in the lower region has a higher force for stretching a unit length region in the vertical direction to a predetermined length in the left-right direction than the expandable / contractible region in the upper region.

[0034] With this type of absorbent pant, the repellent is placed in areas where wrinkles are likely to form due to the elastic material. Therefore, in the unused state (non-stretched state), the repellent is easily covered by the wrinkles, suppressing the release of the repellent. As a result, more of the repellent is more likely to be retained in the absorbent pant until it is worn.

[0035] The absorbent pant-type article is characterized in that each waist portion has an expandable / contractible region that is expandable / contractible by an elastic member that expands / contracts in the left-right direction, the expandable / contractible region of one of the pair of waist portions has a higher force for stretching a unit length region in the vertical direction to a predetermined length in the left-right direction than the expandable / contractible region of the other waist portion, and the basis weight of the repellent in one waist portion is higher than the basis weight of the repellent in the other waist portion.

[0036] With this type of absorbent pant, more repellent is provided in areas where wrinkles are likely to form due to the elastic material. As a result, the repellent is more easily covered by wrinkles when unused (non-stretched), suppressing its release. Therefore, more repellent is more likely to be retained in the absorbent pant until it is worn.

[0037] The absorbent pant-type article is characterized in that each waist portion has an expandable / contractible region that is expandable / contractible by an elastic member that expands / contracts in the left-right direction, the expandable / contractible region of one of the pair of waist portions has a higher force for stretching a unit length region in the vertical direction to a predetermined length in the left-right direction than the expandable / contractible region of the other waist portion, and the basis weight of the repellent in one waist portion is lower than the basis weight of the repellent in the other waist portion.

[0038] With this type of absorbent pant, more repellent is placed in areas where wrinkles are less likely to occur due to the elastic material. As a result, the areas with repellent are more easily exposed to the outside while worn, and the repellent is released more easily, thus increasing the insect repellent effect.

[0039] Furthermore, a pant-type absorbent article having vertical, horizontal, and front-to-back directions, a pair of waist sections, a crotch section, a waist opening, and a pair of leg openings, characterized in that an insect repellent is provided on at least a portion of the peripheral edge along the leg openings.

[0040] With this type of absorbent pant, a repellent is provided in the part of the absorbent pant closest to the wearer's legs, allowing the repellent to be released around the wearer's legs. Therefore, insect bites on the legs, which are prone to being bitten, can be effectively prevented for the wearer of the absorbent pant.

[0041] ===Implementation Method=== As an example of the pant-type absorbent article according to this embodiment, we will describe it using a pant-type disposable diaper for infants as an example. However, the pant-type absorbent article according to this embodiment is not limited to the above and can also be used as a pant-type disposable diaper for adults, a shorts-type sanitary napkin, etc.

[0042] ===Basic Composition of a Pants-Type Disposable Diaper 1=== Figure 1 is a schematic perspective view of a pull-up type disposable diaper 1 (hereinafter also referred to as "diaper 1"). Figure 2 is a schematic plan view of diaper 1 in its unfolded and stretched state, as seen from the skin side. Figure 3 is a schematic cross-sectional view along line AA in Figure 2.

[0043] The unfolded state of diaper 1 refers to the state in which the pair of joints 2 provided on both sides of the pant-type diaper 1 are separated and diaper 1 is opened and laid flat. The stretched state of diaper 1 refers to the state in which the elastic material of diaper 1 is stretched to the extent that the wrinkles of diaper 1 are no longer visible. Specifically, this refers to the state in which the diaper 1 is stretched until the dimensions of each component constituting diaper 1 match or are close to the dimensions of the individual component (i.e., the dimensions when the elastic material is not stretched).

[0044] As shown in Figure 1, the pant-type diaper 1 has vertical, horizontal, and front-to-back directions, and the diaper 1 has a waist opening BH and a pair of leg openings LH. In the front-to-back direction, the side facing the wearer's abdomen is the front, and the side facing the wearer's back is the back. Furthermore, as shown in Figure 3, the diaper 1 has a thickness direction, and in the thickness direction, the side that comes into contact with the wearer is the skin side, and the opposite side is the non-skin side.

[0045] Diaper 1 has an absorbent body 10 and outer covering members 20 and 30 positioned on the non-skin side of the absorbent body 10. Diaper 1 in this embodiment is a so-called three-piece type, and the outer covering members have a front outer covering member 20 and a rear outer covering member 30, and the non-skin side of the absorbent body 10 below the front outer covering member 20 and the rear outer covering member 30 is exposed to the outside.

[0046] As shown in Figure 2, the non-skin side of the longitudinal front end of the absorbent body 10 is joined to the skin side of the front outer casing member 20 with an adhesive, and the non-skin side of the longitudinal rear end of the absorbent body 10 is joined to the skin side of the rear outer casing member 30 with an adhesive. From the unfolded state of the diaper 1 shown in Figure 2, the absorbent body 10 is folded in half so that the front outer casing member 20 and the rear outer casing member 30 face each other, and the left and right sides of the front outer casing member 20 and the left and right sides of the rear outer casing member 30 are joined by welding (for example, heat welding or ultrasonic welding) to form a pair of joints 2, thereby transforming the diaper 1 into a pant-type diaper.

[0047] In this embodiment, in the diaper 1, the area in the vertical direction where the joint portion 2 is located (i.e., the area from the upper end 2a to the lower end 2b of the joint portion 2) is referred to as the "pair of waist portions 1F, 1B", and the area below the pair of waist portions 1F, 1B is referred to as the "crotch area 1C". Furthermore, the front waist portion in the front-to-back direction (the area enclosed by points abcd in Figure 2) is referred to as the "front waist portion 1F", and the rear waist portion (the area enclosed by points efgh in Figure 2) is referred to as the "rear waist portion 1B".

[0048] Furthermore, the front torso section 1F has an upper region 1FU (the region enclosed by points aicj) and a lower region 1FL (the region enclosed by points ibjd) when the front torso section 1F is divided vertically into two parts when it is extended. Similarly, the rear torso section 1B has an upper region 1BU (the region enclosed by points kflh) and a lower region 1BL (the region enclosed by points ekgl) when the rear torso section 1B is divided vertically into two parts when it is extended.

[0049] The absorbent body 10 comprises a liquid-permeable top sheet 11, an absorbent core 12 for absorbing excrement, a liquid-impermeable back sheet 13, and an outer sheet 14, all of which are bonded together with an adhesive or the like. An example of the absorbent core 12 is a material formed by molding a liquid-absorbent fiber, such as pulp fiber, containing a superabsorbent polymer into a predetermined shape. The absorbent core 12 may also be covered with a liquid-permeable core wrap sheet, such as tissue paper or nonwoven fabric. Other examples of the absorbent core 12 include an SAP sheet, which has an SAP layer attached to a hydrophilic sheet, and an airlaid sheet, which is formed from liquid-absorbent fibers using an airlaid method.

[0050] Furthermore, the absorbent body 10 has leg-circumference elastic members 15 (e.g., elastic thread) on both sides in the left-right direction that stretch in the longitudinal direction (up-down direction). This allows the diaper 1 to fit around the wearer's legs.

[0051] Furthermore, the absorbent body 10 has leak-proof wall portions 16 that can be raised on the skin side at both sides in the left-right direction. For example, the leak-proof wall portions 16 are formed by folding both sides of the outer sheet 14 inward in the left-right direction so that they are positioned on the skin side of the top sheet 11, and providing a leak-proof elastic member 161 (e.g., elastic thread) that expands and contracts in the longitudinal direction at the folded portion.

[0052] As shown in Figure 3, the front outer member 20 and the rear outer member 30 each have a skin-facing sheet 21, 31 and a non-skin-facing sheet 22, 32 made of a flexible nonwoven fabric or the like, and a plurality of waist elastic members 23, 33 (e.g., elastic thread) that stretch in the left-right direction. The plurality of waist elastic members 23, 33 are arranged in the waist sections 1F, 1B with spacing in the vertical direction and are fixed to the sheet in a state of being stretched in the left-right direction. Therefore, the front outer member 20 and the rear outer member 30 are stretchable in the left-right direction and fit the wearer's waist.

[0053] Furthermore, the front exterior member 20 has a printed sheet 24 (for example, a resin film such as polyethylene or polypropylene) between the skin-facing sheet 21 and the non-skin-facing sheet 22. Although not shown, the rear exterior member 30 may also have a printed sheet between the skin-facing sheet 31 and the non-skin-facing sheet 32.

[0054] Furthermore, as shown in Figure 2, the front exterior member 20 has a rectangular shape. On the other hand, the rear exterior member 30 has an extension 34 that extends downward from the rectangular rear body circumference 1B. The extension 34 has a roughly trapezoidal shape, with its length in the left-right direction decreasing towards the bottom.

[0055] The basic structure of diaper 1 has been described above, but the structure of diaper 1 is not limited to that. For example, diaper 1 may be a two-piece type diaper, in which the front outer member 20 and the rear outer member 30 are formed from a single continuous member (see Figure 8 described later), or an outer member for the crotch area connecting the front outer member 20 and the rear outer member 30 may be provided. In addition, the waist elastic members 23, 33 and the leg elastic members 15 may be sheet-like elastic members (stretchable film or stretchable nonwoven fabric) instead of elastic threads.

[0056] ===First Embodiment: Repellent Placement Area 41=== Figures 4 and 5 are explanatory diagrams of the repellent placement area 41, showing the front body circumference 1F in an extended state.

[0057] Diaper 1 is equipped with "insect repellent 40". Insect repellent 40 is an insect repellent (insect repellent) against pests such as mosquitoes, gnats, midges, and flies, and is a synthetic compound or natural plant extract containing an insect-repellent component. For example, citronellal, 1,8-cineole, linalyl acetate, DEET (N,N-diethyl-3-methylbenzamide), sesquiterpenes, ethyl ethylbutylacetylaminopropionate, picaridin, pyrethroid, cinnamon, rosemary, lavender, peppermint, eucalyptus, citronella, lemon eucalyptus, and other similar substances can be used. The repellent 40 can be selected according to the target pests and the person wearing the diaper. In this embodiment, an isolated fragrance extracted from lemongrass was used. This imparts an insect-repellent component (citronellal) to diaper 1.

[0058] Furthermore, it is preferable that the repellent 40 is an allergen-free substance. For example, it is preferable that it substantially does not contain any of the 26 substances that are required to be labeled as allergens under the EU (European Union) Cosmetics Directive (76 / 768 / EEC) (i.e., their proportion in the repellent 40 is 1% or less). In addition, it is preferable that the repellent 40 does not interfere with the adhesive performance of the hot melt adhesive used in the diaper 1.

[0059] In this embodiment, the repellent 40 is contained within a microcapsule (membrane material). The microcapsule is a capsule having a diameter of 1 to 1000 μm and a space that encloses a core material (repellent 40). Examples of materials for the microcapsule include urethane resin, gelatin, gelatin-acalycium gum, melamine resin, urea, formalin resin, sugars, etc. In this embodiment, microcapsules made of urethane resin that disintegrate upon physical impact are used. However, the microcapsule is not particularly limited as long as the membrane material disintegrates upon physical stimulation (e.g., pressure, impact, heat, vibration, light, etc.) or chemical stimulation (e.g., contact with liquid), releasing the repellent 40 contained within.

[0060] Because the repellent 40 is contained in microcapsules, a large amount of the repellent 40 is retained in the diaper 1 until it is put on. When the diaper 1 is put on, the diaper 1 rubs due to the wearer's movements, or the wearer rubs or grasps the area where the repellent 40 is located, causing physical stimulation that breaks the microcapsules and releases the repellent 40 to the outside of the diaper 1. However, the repellent 40 does not necessarily have to be contained in microcapsules.

[0061] One method for providing the repellent 40 to the diaper 1 is to coat the diaper 1 with a liquid in which microcapsules containing the repellent 40 are dispersed. The liquid (dispersion medium) used to disperse the microcapsules is preferably one that does not dissolve or swell the microcapsules and maintains the function of the repellent 40. Various known methods for coating include spraying, roller coating, and brush coating. Other methods for providing the repellent 40 to the diaper 1 include, for example, immersing the materials constituting the diaper 1 in a dispersion (solution) of the repellent 40, kneading the repellent 40 into the fibers of the materials constituting the diaper 1, or mixing particulate repellent 40 into the fibers of the materials constituting the diaper 1.

[0062] As mentioned above, diaper 1 is a pull-up type diaper in which the left and right sides of each of the two waist sections 1F and 1B are joined by a pair of connecting parts 2. As a result of diligent research, the applicant has found that the main target users of pull-up type diapers (older infants who are actively crawling and walking) are more susceptible to insect bites on their legs (especially their thighs and shins) than on their faces.

[0063] Therefore, in diaper 1, an insect repellent 40 is provided in the lower regions 1FL and 1BL of at least one of the pair of waist portions 1F and 1B. In the diaper 1 of the first embodiment, as shown in Figures 4 and 5, the repellent 40 is provided in the lower region 1FL of the front waist portion 1F. In other words, the repellent 40 is provided in the area of ​​the front outer covering member 20 and the absorbent body 10 located in the lower region 1FL of the front waist portion 1F.

[0064] By doing so, the repellent 40 is provided in a part of the diaper 1 closer to the wearer's legs, compared to, for example, the case where the repellent 40 is provided only in the upper areas 1FU and 1BU of the waist area 1F and 1B. Therefore, the repellent 40 is released around the wearer's legs, preventing insect bites on the wearer's legs. In other words, it is possible to effectively prevent insect bites on the wearer of the pant-type diaper 1, which is prone to leg bites. Also, in hot weather when insect bites are common, infants often wear shorts. Therefore, by providing the repellent 40 in the lower areas 1FL and 1BL of the waist area 1F and 1B, the repellent 40 is more easily released to the outside from the leg openings of the clothing, enhancing the insect repellent effect. In addition, infants sometimes wear one-piece clothing such as rompers. In this case as well, by providing the repellent 40 in the lower regions 1FL and 1BL of the waist area 1F and 1B, the repellent 40 is less likely to remain inside the clothing and is more likely to be released to the outside through the leg openings of the clothing.

[0065] Specifically, as shown in Figure 3, the repellent 40 is provided (coated) on the non-skin side of the non-skin side sheet 22, which is a part of the front outer covering member 20 located in the lower region 1FL of the front waist circumference portion 1F. By providing the repellent 40 on the non-skin side of the diaper 1 in this way, the repellent 40 is more easily released to the outside of the diaper 1, thereby enhancing the insect repellent effect.

[0066] However, the above is not limited to the above, and the repellent 40 may also be provided on other parts located in the lower region 1FL of the front waist portion 1F. For example, the repellent 40 may be provided on the skin side of the non-skin side sheet 22 of the front exterior member 20, or on the skin side sheet 21 or the printed sheet 24. In addition, the repellent 40 may be provided on the absorbent core 12 of the absorbent body 10, the back sheet 13 or the exterior sheet 14. Furthermore, there may be more than one material to which the repellent 40 is provided.

[0067] Furthermore, it is sufficient that at least a portion of the repellent 40 is provided in the lower regions 1FL and 1BL of the body sections 1F and 1B, and the repellent 40 may also be provided in the upper regions 1FU and 1BU. However, in the body section where the repellent 40 is provided (in this case, the front body section 1F), the basis weight (g / m²) of the repellent 40 in the upper region (1FU) is... 2 ) is greater than the basis weight (g / m²) of the repellent 40 in the lower region (1FL). 2 It is preferable that the area (m²) of the upper region (1 FU) is higher. In other words, the total weight (g) of the repellent 40 provided in the upper region (1 FU) is greater than the area (m²) of the upper region (1 FU) in the extended state. 2 The value obtained by dividing by ) represents the total weight (g) of the repellent 40 provided in the lower region (1FL) by the area (m²) of the lower region (1FL) in the extended state. 2 It is preferable that the value is greater than the value obtained by dividing by ).

[0068] By doing so, more repellent 40 is placed in the part of the diaper 1 closest to the wearer's legs, making it easier for the repellent 40 to be released around the wearer's legs. Therefore, insect bites on the legs, which are prone to being bitten, can be prevented more effectively for the wearer of the pull-up type diaper 1.

[0069] Furthermore, confirmation that the repellent 40 is provided in the lower regions 1FL and 1BL of the waist sections 1F and 1B can be performed using a well-known method. First, the waist sections 1F and 1B (absorbent body 10 + outer covering members 20 and 30) to be measured are cut out from the diaper 1, and the cut-out waist sections 1F and 1B are further divided into upper and lower halves to form samples of the lower regions 1FL and 1BL. By analyzing the components of these samples using, for example, a gas chromatography apparatus (Agilent 7890B or an equivalent apparatus), it can be confirmed whether or not the samples of the lower regions 1FL and 1BL contain insect-repellent components (repellent 40). In addition, if the repellent 40 is contained in microcapsules, the presence or absence of microcapsules (repellent 40) can be confirmed by observing the samples of the lower regions 1FL and 1BL with an electron microscope.

[0070] Furthermore, the basis weight (g / m²) of the repellent 40 in the upper region 1FU, 1BU 2) and the basis weight (g / m²) of the repellent 40 in the lower region 1FL, 1BU. 2 The comparison of these can also be performed using the gas chromatography apparatus described above. (1) First, the waist circumference portion 1F, 1B (absorbent body 10 + outer material 20, 30) to be measured is cut out from diaper 1 and separated into the lower region 1FL, 1BL and the upper region 1FU, 1BU. The separated lower regions 1FL, 1BL and upper regions 1FU, 1BU are further cut into smaller samples of a predetermined size (for example, 20mm x 40mm in the vertical x horizontal directions). (2) Next, the finely cut sample is immersed in water or otherwise used to dissolve the microcapsules, and a mixture of the repellent 40 (an ingredient with insect-repellent properties) and other ingredients (solvent, etc.) is extracted from the sample. (3) The mixture extracted from each sample is analyzed for its components using a gas chromatography apparatus. For each sample, the peak values ​​of the repellent 40 (insect-repellent component) and the other components (solvent, etc.) are obtained, and the ratio of the repellent peak value to the peak value of the other components (repellent peak value / other component peak value) is calculated. This ratio is considered to correspond to the amount of repellent 40 present in the sample. (4) Finally, the average value of the proportion of repellent (peak value of repellent / peak value of other components ≈ amount of repellent 40) of multiple samples constituting the upper region 1FU,1BU is calculated and taken as equivalent to the basis weight of repellent 40 in the upper region 1FU,1BU. In addition, the average value of the proportion of repellent (peak value of repellent / peak value of other components ≈ amount of repellent 40) of multiple samples constituting the lower region 1FL,1BL is calculated and taken as equivalent to the basis weight of repellent 40 in the lower region 1FL,1BL, and compared. Furthermore, a comparison of the basis weight of the repellent 40 in the front body section 1F and the rear body section 1B, as described later, can also be performed in the same manner.

[0071] Here, the area in diaper 1 where the repellent 40 is provided is also referred to as the "repellent placement area 41". The repellent placement area 41 in diaper 1 can also be identified in the same way as described above. That is, the repellent placement area 41 can be identified by cutting diaper 1 into small samples, analyzing the components of each sample using a gas chromatography apparatus, and confirming whether or not the repellent 40 is present. Alternatively, the repellent placement area 41 can be identified by observing the finely cut samples with an electron microscope to confirm the presence or absence of microcapsules (repellent 40).

[0072] In the diaper 1 of the first embodiment, as shown in Figure 5, the repellent placement area 41 is longer in the left-right direction than in the up-down direction of the diaper 1, and extends continuously in the left-right direction from the left end to the right end of the front waist circumference portion 1F. Three of these areas are arranged side by side with gaps in the up-down direction.

[0073] Therefore, in diaper 1, at least a portion of the repellent 40 is provided in the area where the absorbent core 12 is located within the waist area 1F, 1B (in this case, the front waist area 1F) where the repellent 40 is provided. In other words, when diaper 1 is unfolded, at least a portion of the absorbent core 12 and the repellent placement area 41 overlap each other in the thickness direction of diaper 1.

[0074] In this case, the repellent 40 placed in a position overlapping with the absorbent core 12 (especially the repellent 40 placed on the non-skin side of the absorbent core 12) has difficulty passing through the dense and thick absorbent core 12. Therefore, the repellent 40 is more likely to be released to the outside of the diaper 1 than to be released towards the skin. Thus, the insect-repellent effect of the diaper 1 is enhanced.

[0075] Furthermore, the front outer casing member 20 and the rear outer casing member 30 have waist elastic members 23 and 33 in the waist sections 1F and 1B. Each waist section 1F and 1B has a non-stretchable region NS in the area where the absorbent body 10 is located, where the waist elastic members 23 and 33 cannot stretch or contract. This prevents the absorbent body 10 (absorbent core 12) from contracting due to the waist elastic members 23 and 33, thus preventing a gap from forming between the diaper 1 and the wearer. In the drawings, only the stretchable parts of the waist elastic members 23 and 33 are shown, but there may be parts of the waist elastic members 23 and 33 that do not stretch or contract in the non-stretchable region NS.

[0076] Furthermore, it is preferable that at least a portion of the repellent 40 is provided in the non-stretchable area NS of the waist area 1F, 1B (in this case, the front waist area 1F) where the repellent 40 is provided. This prevents the repellent 40 from being covered by wrinkles that form in the waist area 20, 30 due to the waist elastic members 23, 33, and makes it easier for the repellent 40 to be released to the outside of the diaper 1. Thus, the insect-repellent effect of the diaper 1 is enhanced. However, this is not limited to this, and the repellent 40 does not necessarily have to be provided in the non-stretchable area NS.

[0077] Furthermore, if the repellent 40 is encapsulated in multiple microcapsules, as shown in Figures 1 and 4, the torso sections 1F and 1B (in this case, the front torso section 1F) where the repellent 40 is provided should have a marker section 50 indicating the area where the repellent 40 is provided. This makes it easier for the user to easily and correctly recognize the area where the repellent 40 is provided.

[0078] The marker portion 50 in this embodiment is formed by printing in a color different from the surrounding color (e.g., white) (e.g., green or yellow). Specifically, the marker portion 50 printed on the print sheet 24 is visible from the outside of the diaper 1 through the non-skin side sheet 22. Furthermore, the marker portion 50 shown in Figure 4 has the words "AntiMos" indicating that the diaper 1 has an insect (mosquito) repellent effect, and the words "Rub here" indicating the action to destroy the microcapsules. Therefore, a user who sees the marker portion 50 can destroy the microcapsules when putting on the diaper 1 or at a desired timing while wearing it, thereby releasing more repellent 40.

[0079] However, the marker portion 50 is not limited to those illustrated in Figure 4, and may be, for example, a pattern or a plain colored area. Also, the material on which the marker portion 50 is printed is not limited to the print sheet 24, and may be printed on other materials (nonwoven fabric, etc.) that make up the diaper 1. Furthermore, the marker portion 50 may be formed by compressing the diaper 1 in the thickness direction to create a compressed portion (unevenness), or the waist elastic members 23, 33 may be colored, or the microcapsules (the repellent 40 itself) may be colored to form a marker portion 50 of a different color from the surrounding area.

[0080] Furthermore, it is preferable that the non-stretchable area NS and the marker area 50 of the waist area 1F, 1B overlap in the front-to-back direction on the same side, and that at least a portion of the repellent 40 is provided in the overlapping area. In other words, when the diaper 1 is unfolded, it is preferable that at least a portion of each other of the non-stretchable area NS, the marker area 50, and the repellent area 41 overlap in the thickness direction of the diaper 1.

[0081] By doing so, the marker portion 50 is located in the non-stretchable region NS, where there are fewer wrinkles caused by the elastic members 23 and 33 around the waist, thus improving the visibility of the marker portion 50. Also, because the absorbent body 10 (non-stretchable region NS) and the repellent placement region 41 overlap, the highly rigid absorbent core 12 acts as a base, making it easier for the user to rub the repellent placement region 41. As a result, the microcapsules break more efficiently, and the repellent 40 is more easily released to the outside of the diaper 1. However, this is not limited to this, and the marker portion 50 and the repellent 40 do not necessarily have to be provided in the non-stretchable region NS.

[0082] Furthermore, as shown in Figure 5, the repellent placement areas 41 are arranged in a row at intervals in the vertical direction of the diaper 1 on the front waist area 1F. In this case, since the repellent 40 is not concentrated in one part of the diaper 1, the amount of repellent 40 to be placed on the diaper 1 can be reduced while providing the repellent 40 over a wide area in the vertical direction of the diaper 1. Therefore, an insect repellent effect is generated over a wide area in the vertical direction of the diaper 1. However, this is not the only option, and the repellent placement areas 41 may be provided without spacing in the vertical direction.

[0083] In this embodiment, the width (vertical length) of one repellent placement area 41 is set to approximately 5 mm, and the vertical spacing between the repellent placement areas 41 is set to 2.5 mm. Therefore, the repellent 40 is provided in an area with a vertical length of approximately 20 mm. In other words, since the repellent 40 is provided in an area about the length of a user's fingertip, it is easy for the user to rub the repellent placement area 41 with the pad of their finger.

[0084] Furthermore, by arranging multiple repellent placement areas 41 at intervals, it becomes easier to adjust the number of microcapsules that break, i.e., the amount of repellent 40 released, according to the size of the area rubbed by the user. In this embodiment, the marker portion 50 (Figure 1) has areas between the repellent placement areas 41 that are colored in the same way as the repellent placement areas 41. However, the marker portion 50 may also have colored areas spaced vertically to match the repellent placement areas 41. In this way, the user can rub three colored areas (repellent placement areas 41) if they want to increase the insect repellent effect, or rub one colored area (repellent placement area 41) if they want to obtain a moderate insect repellent effect, making it easier to adjust the amount of repellent 40 released.

[0085] Furthermore, in the first embodiment, the repellent placement area 41 is continuously provided in the left-right direction in the lower area 1FL of the front waist portion 1F, from a position overlapping with the left joint portion 2 in the front-rear direction (thickness direction) to a position overlapping with the right joint portion 2 in the front-rear direction. As a result, the repellent 40 is provided in the parts of the diaper 1 that are close to each of the pair of leg openings LH, making it easier for the repellent 40 to be released near both of the wearer's legs. In addition, the repellent placement area 41 can overlap with the absorbent body 10 and the absorbent core 12. Moreover, because the repellent 40 is provided at the pair of joints 2, the repellent 40 is provided near the apex of the leg opening LH of the diaper 1, that is, near the part where the legs are most exposed, thus more effectively preventing insect bites on the wearer's legs.

[0086] Furthermore, in the manufacturing process of diaper 1, a pair of joints 2 can be formed after the repellent 40 has been applied to the front waist area 1F. In this case, when forming the joints 2 by welding or the like, the microcapsules located at the formation site of the joints 2 can be destroyed. Therefore, diaper 1 can be sealed in a package (packaging bag) with some of the microcapsules on diaper 1 destroyed. As a result, the package becomes filled with the repellent 40, and the effect of the repellent 40 is more easily imparted to the entire diaper 1. In addition, the user who opens the package can feel the repellent 40 and recognize that diaper 1 has an insect-repellent effect. To confirm that the microcapsules located at joints 2 have been destroyed during the manufacturing process, it is advisable to examine diaper 1 immediately after removing it from the package using an electron microscope. In other words, this can be confirmed by checking that the number of destroyed microcapsules located at joints 2 is greater than the number of destroyed microcapsules located in other parts of the diaper.

[0087] Furthermore, in the diaper 1 of the first embodiment, the repellent 40 is provided on the front waist area 1F, but not on the rear waist area 1B. Also, infant diapers 1 are often sealed in the package without being folded. For this reason, it is preferable to arrange multiple diapers 1 in the package in the direction of their thickness so that the front waist area 1F of one diaper 1 and the rear waist area 1B of another diaper 1 come into contact. By doing so, the effect of the repellent 40 provided on the front waist area 1F of one diaper 1 is more easily transferred to the rear waist area 1B of another diaper 1. Thus, the insect repellent effect is more easily generated in the rear waist area 1B of the diaper 1 as well.

[0088] Furthermore, in the lower regions 1FL and 1BL of the waist sections 1F and 1B, it is preferable that the area where the repellent 40 is provided is located above and spaced apart from the lower end (1Fa) of the waist sections 1F and 1B (in this case, the front waist section 1F). This makes it less likely that the repellent area 41 will be covered by the lifted portion when the lower end of the waist sections 1F and 1B is lifted by the wearer's leg movements while wearing the diaper 1. As a result, the repellent 40 is more reliably released to the outside, and the insect repellent effect is achieved. However, the repellent 40 may be provided up to the lower end of the waist sections 1F and 1B.

[0089] Furthermore, the torso sections 1F and 1B have expandable and contractible regions (excluding the non-expandable region NS) that can be expanded and contracted by the torso elastic members 23 and 33. In the torso sections 1F and 1B (in this case, the front torso section 1F) where the repellent 40 is provided, it is preferable that the force required to stretch a region of a unit length in the vertical direction to a predetermined length in the left-right direction is higher in the expandable and contractible regions of the lower regions 1FL and 1BL than in the expandable and contractible regions of the upper regions 1FU and 1BU.

[0090] In other words, it is desirable that the tensile stress in the lower regions 1FL and 1BL where the repellent 40 is provided is high, and that wrinkles easily form in the lower regions 1FL and 1BL due to the waist elastic members 23 and 33. This makes it easier for the repellent placement region 41 to be covered by the wrinkles that form in the waist portions 1F and 1B when the waist elastic members 23 and 33 are not stretched, that is, when the diaper 1 is unused. As a result, the repellent 40 is less likely to be released before the diaper 1 is used, and the repellent 40 is more likely to be retained in the diaper 1 until it is worn.

[0091] However, conversely, the stretchable area in the lower region 1FL,1BL may require less force (tensile stress) to stretch a unit length in the vertical direction by a predetermined length in the horizontal direction compared to the stretchable area in the upper region 1FU,1BU. In other words, wrinkles may be less likely to form in the lower region 1FL,1BL where the repellent 40 is provided. This makes it easier for the repellent area 41 to be exposed to the outside and less likely to be covered by wrinkles while the diaper 1 is worn, thus facilitating the release of the repellent 40 to the outside.

[0092] Furthermore, the expansion and contraction region of one of the pair of body sections 1F and 1B is assumed to have a higher force (tensile stress) required to stretch a unit length in the vertical direction by a predetermined length in the horizontal direction compared to the expansion and contraction region of the other body section. In this case, the basis weight of the repellent 40 in one body section (here, the front body section 1F) should be higher than the basis weight of the repellent 40 in the other body section (here, the rear body section 1B).

[0093] In other words, it is best to place more repellent 40 in the torso area where the tensile stress is higher. By doing so, in the state before diaper 1 is used, the area with more repellent 40 is more likely to be covered by wrinkles, making it difficult for the repellent 40 to be released. Therefore, more repellent 40 is more likely to be retained in diaper 1 until it is put on.

[0094] However, conversely, the basis weight of the repellent 40 in the waist section with higher tensile stress (in this case, the rear waist section 1B) of the pair of waist sections 1F and 1B may be lower than the basis weight of the repellent 40 in the other waist section (in this case, the front waist section 1F). By doing so, when the diaper 1 is worn, the area where more repellent 40 is provided is less likely to be covered by wrinkles and is exposed to the outside, making it easier for more repellent 40 to be released.

[0095] To adjust the tensile stress in the body sections 1F and 1B, it is advisable to adjust the number of body elastic members 23 and 33, the thickness of the thread-like body elastic members 23 and 33, and the stretch ratio when fixing the body elastic members 23 and 33 to the sheet.

[0096] Furthermore, a comparison of the tensile stress in the upper region 1FU,1BU and the tensile stress in the lower region 1FL,1BL can be performed using the following method with a tensile testing machine. (1) First, the absorbent body 10 and the outer casing members 20 and 30 are separated using a cold spray or the like, and the torso circumference portion 1F and 1B to be measured is taken out from the outer casing members 20 and 30. The taken torso circumference portion 1F and 1B (outer casing members 20 and 30) is divided into two parts, upper and lower, to prepare samples of the upper region 1FU and 1BU and samples of the lower region 1FL and 1BL. Furthermore, if the torso area 1F,1B has a non-stretchable region NS, the non-stretchable region NS is removed from the sample, and the sample is separated into multiple parts so that it forms a rectangle. For example, in Figure 5, the sample of the upper region 1FU is separated into three samples: the region above the non-stretchable region NS, and the region to the left and right of the non-stretchable region NS. Similarly, the sample of the lower region 1BU is separated into two samples: the region to the left and the region to the right of the non-stretchable region NS. (2) Next, for each sample, the ends of the sample corresponding to the left-right direction of diaper 1 are gripped by the chucks of the tensile testing machine. The distance between the chucks is adjusted so that the sample is neither slack nor stretched. Then, the distance between the chucks is widened at a predetermined speed on the tensile testing machine, and the load is obtained when the sample is stretched to a predetermined length in the left-right direction. (3) Next, measure the vertical length of each sample. Then, convert the load (N) obtained in (2) into a value per unit width (mm) in the vertical direction (N / mm) and use this as the tensile stress of the upper region 1FU,1BU and the lower region 1FL,1BL. Furthermore, if the samples from the upper regions 1FU and 1BU, and the samples from the lower regions 1FL and 1BL are separated in order to exclude the non-stretchable region NS, the tensile stress (N / mm) for each separated sample is calculated, and the average value is used as the tensile stress for the upper regions 1FU and 1BU, and the tensile stress for the lower regions 1FL and 1BL.

[0097] Furthermore, a comparison of the tensile stress of the front waist section 1F and the tensile stress of the rear waist section 1B can also be performed using the above method with a tensile testing machine. It is preferable to prepare samples without dividing the waist sections 1F and 1B (exterior members 20 and 30) removed from the diaper 1 into two halves.

[0098] ===Variations of the First Embodiment=== Figures 6A and 6B are explanatory diagrams of the repellent placement area 41 of a modified example of the first embodiment. For example, as shown in Figure 6A, the repellent 40 may be provided in both the lower area 1FL of the front body section 1F and the lower area 1BL of the rear body section 1B, or the areas (coating patterns) in which the repellent 40 is provided may differ between the front and rear sections. Also, as shown in Figure 6B, the repellent 40 may be provided in the lower area 1BL of the rear body section 1B, but not in the lower area 1FL of the front body section 1F or throughout the entire front body section 1F. In addition, although not shown, if the repellent 40 is provided in the lower areas 1FL and 1BL of at least one of the pair of body sections 1B and 1F, the repellent 40 may be provided in the upper areas 1FU and 1BU of the other body section. Furthermore, although not shown in the figures, the repellent placement area 41 in the lower regions 1FL and 1BL of the torso sections 1F and 1B may extend continuously in the vertical direction to the upper regions 1FU and 1BU and the lower extension section 34.

[0099] Furthermore, while the repellent placement areas 41 were provided continuously in the left-right direction in the diaper 1 illustrated in Figures 4 and 5, the pattern (coating pattern) of the repellent placement areas 41 is not limited to this. For example, as shown in Figure 6A, multiple areas where the repellent 40 is provided may be arranged side by side with gaps between them in the left-right direction. In this case, the amount of repellent 40 provided in the diaper 1 can be reduced while providing the repellent 40 over a wide area in the left-right direction of the diaper 1. Therefore, an insect repellent effect is generated over a wide area in the left-right direction of the diaper 1.

[0100] Furthermore, as shown in the front of Figure 6A, when the repellent placement areas 41 are spaced apart in the left-right direction, it becomes easier to adjust the release points of the repellent 40. For example, if the wearer wants to enhance the insect repellent effect on one of their legs, they can rub the repellent placement area 41 closer to that leg. Also, as shown in the rear of Figure 6A, when multiple repellent placement areas 41 are arranged at narrow intervals in the left-right direction, it becomes easier to adjust the size of the area the user rubs (the number of repellent placement areas 41), and thus easier to adjust the amount of repellent 40 released.

[0101] Furthermore, as shown in Figure 6A, the repellent 40 may be provided in areas of the waist area 1F, 1B where the absorbent core 12 is not located. In other words, when the diaper 1 is unfolded, the absorbent core 12 and the repellent placement area 41 may not overlap in the thickness direction of the diaper 1. By doing so, it is possible to prevent the odor of the excrement absorbed by the absorbent core 12 from mixing with the repellent 40, which could reduce the effectiveness of the repellent 40 or create an unpleasant odor.

[0102] Furthermore, as shown in Figure 6A, the left edge 40a of the area where the repellent 40 is provided may be located to the right (inward) of the right edge 2a of the left joint 2, and the right edge 40b of the area where the repellent 40 is provided may be located to the left (inward) of the left edge 2b of the right joint 2. In other words, the repellent 40 may not be provided at the joint 2. By doing so, since the joint 2 is highly rigid and prone to protruding while the diaper 1 is being worn, it is possible to prevent the repellent 40 provided at the joint 2 from coming into strong contact with the wearer's clothing and adhering to the clothing.

[0103] Furthermore, as shown in Figure 6B, if the rear outer casing member 30 has an extension 34 that extends downward from the rear waist portion 1B, the repellent 40 may also be provided on the extension 34. By doing so, the repellent 40 is further provided on the part of the diaper 1 that is close to the wearer's legs, thereby effectively preventing insect bites on the wearer's legs. Although not shown, the front outer casing member 20 may also have an extension that extends downward from the front waist portion 1F, and the repellent 40 may be provided on that extension.

[0104] ===Second Embodiment=== Figures 7A, 7B, and 8 are explanatory diagrams of the repellent placement area 41 in the second embodiment. In the diaper 1 of the second embodiment, the repellent 40 is provided on at least a portion of the peripheral edge along the leg opening 1L. In this way, the repellent 40 is provided on the part of the diaper 1 that is close to the wearer's legs. Therefore, the repellent 40 is released around the wearer's legs, effectively preventing insect bites on the wearer of the pant-type diaper 1, which is prone to bites on the legs.

[0105] The diaper 1 illustrated in Figures 4 and 5 (a three-piece type in which the repellent 40 is provided in the lower region 1FU of the front waist circumference portion 1F, which does not have an extended portion) also has the repellent 40 provided in a part of the peripheral edge along the leg circumference opening 1L. In other words, some of the diapers 1 of the first embodiment are also included in the diapers 1 of the second embodiment.

[0106] Furthermore, as shown in Figure 7A, the diaper 1 may also have a repellent 40 provided on the lower regions 1FL, 1BL of at least one of the pair of waist portions 1F, 1B (in this case, the lower region 1FL of the front waist portion 1F) and on the sides of the absorbent body 10. In other words, in the diaper 1 of the first embodiment, the repellent 40 may be provided on the sides of the absorbent body 10. In this case, since the repellent 40 is provided over a wider area of ​​the periphery along the leg opening 1L, insect bites on the wearer's legs can be prevented more effectively.

[0107] Furthermore, as shown in Figure 7B, the repellent 40 may not be provided in the lower regions 1FL and 1BL of the body sections 1F and 1B, but rather on the side of the absorbent body 10. In this case as well, the repellent 40 is provided on a part of the peripheral edge along the leg opening 1L.

[0108] Furthermore, as shown in Figure 8, in a two-piece type diaper 1 formed by a single outer material that extends from the front waist portion 1F to the rear waist portion 1B, the repellent 40 may be provided on the side end of the outer material 60. In this case as well, the repellent 40 is provided on a part of the peripheral edge along the leg opening 1L.

[0109] The embodiments described above are provided to facilitate understanding of the present invention and are not intended to limit its interpretation. The present invention can be modified and improved without departing from its spirit, and it goes without saying that equivalents thereof are included. [Explanation of symbols]

[0110] 1. Diaper (pants-type absorbent item), 2. Joint, 1F Front waist area, 1B Rear waist area, 1C Crotch area, 1FL, 1BL lower area, 1FU, 1BU upper area, 10 Absorbent body, 11 Top sheet, 12 Absorbent core, 13 Back seat, 14 Exterior seat, 15 Leg elastic components, 16 Leak-proof wall section, 161 Leak-proof wall elastic member, 20 Front exterior member, 21 Skin-side sheet, 22 Non-skin-side sheet, 23 Elastic member around the torso (elastic member), 24 Printed sheet, 30 Rear exterior member, 31 Skin-side sheet, 32 Non-skin-side sheet, 33 Elastic member around the torso (elastic member), 40 (insect) repellent, 41 area where repellent is placed, 50 Marker section, LH: Leg opening, BH: Torso opening

Claims

1. It has vertical, horizontal, and front-to-back directions, A pair of pants-type absorbent articles having a pair of waist sections and a crotch section, wherein the left and right sides of each of the pair of waist sections are joined by a pair of joints, Having an absorbent body, The pair of torso sections each have a connecting portion for joining the left and right ends of each section, When viewed from above in an unfolded state, with respect to the central position of the pant-type absorbent article in the longitudinal direction of the absorbent body, if one side of the absorbent body in the longitudinal direction is defined as the one-side existence region, An insect repellent is provided on the side of the aforementioned one-sided region, which is part of the peripheral edge along the leg opening. In a plan view, and in the longitudinal direction, The other end of the joint in the longitudinal direction is located on the other side of the region existing on the one side in the longitudinal direction, The aforementioned central position is located on the other side of the other end of the joint in the longitudinal direction, In a plan view of the one-sided region, the repellent is not placed in the region from the one-sided end of the one-sided region in the longitudinal direction to the other-sided end of the joint in the longitudinal direction. In a plan view of the one-sided region, the repellent is placed in the region from the other end of the joint in the longitudinal direction to the central position. A pant-type absorbent article characterized by the following features.

2. The pant-type absorbent article according to Claim 1, In the aforementioned one-sided region, when the distance from the other end of the joint in the longitudinal direction to the central position is divided into two in the longitudinal direction, it has a third region on the one side and a fourth region on the other side. A pant-type absorbent article characterized in that the area of ​​the portion where the repellent is placed in the fourth region is larger than the area of ​​the portion where the repellent is placed in the third region.

3. A pant-type absorbent article according to claim 1 or 2, A pant-type absorbent article characterized in that multiple portions on which the repellent is placed are arranged in a row with spacing between them in the left-right direction.

4. A pant-type absorbent article according to any one of claims 1 to 3, Each of the aforementioned body sections has an upper region and a lower region when the body section is divided into two parts in the longitudinal direction in an extended state. An insect repellent is provided in the lower region of at least one of the pair of body parts. In the torso area where the repellent is provided, A pant-type absorbent article characterized in that the basis weight of the repellent in the lower region is higher than the basis weight of the repellent in the upper region.

Citation Information

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