Absorbent article

Abstract

The present absorbent article (1) includes a plurality of components, and a deodorant (40) is disposed therein. The absorbent article (1) is characterized in that at least a part of the plurality of components is bonded by a hot melt adhesive (IA) containing a tackifier having a deodorizing component, the tackifier having a deodorizing component containing at least one of alpha-pinene, beta-pinene, and camphene.

Description

Technical Field

[0001] This invention relates to an absorbent article. Background Technology

[0002] Patent document 1 discloses an absorbent article in which microencapsulated natural plant extracts exhibiting insect-repellent effects are applied. Some natural plants (such as cinnamon, rosemary, lavender, mint, eucalyptus, etc.) contain odorous components with repellent properties, and applying extracts of such natural plants to absorbent articles can keep insects away from the absorbent articles.

[0003] [Existing technical documents]

[0004] [Patent Literature]

[0005] Patent Document 1: Japanese Patent Publication No. 2012-522618 Summary of the Invention

[0006] The problem the invention aims to solve

[0007] However, the weight of insecticidal fragrance that can be contained in microcapsules is limited. Therefore, there is a risk that the insecticidal fragrance may not be effective enough. Furthermore, even if the number of microcapsules is increased to increase the weight of the insecticidal fragrance, the number of unbroken microcapsules may also increase. Then, the amount of insecticidal fragrance released to the outside does not increase, and the insecticidal effect remains insufficient.

[0008] The present invention was made in view of the above-mentioned problems, and the object of the present invention is to improve the insect-repellent effect of absorbent articles containing insect-repellent fragrances.

[0009] Solution for solving the problem

[0010] A key aspect of the invention for achieving the above objectives is an absorbent article comprising: a plurality of components; and an insecticidal fragrance disposed in the absorbent article, wherein at least a portion of the plurality of components is bonded by a hot melt adhesive containing a tackifier having an insecticidal component, the tackifier having an insecticidal component containing at least one of α-pinene, β-pinene, and camphene.

[0011] Other features of the invention will become clear from the description of this specification in conjunction with the accompanying drawings.

[0012] The effects of the invention

[0013] According to the present invention, the insect-repellent effect of absorbent articles containing insect-repellent fragrances can be improved. Attached Figure Description

[0014] [ Figure 1 ] Figure 1This is a plan view of a strip-type disposable diaper 1 in an unfolded and elongated state when viewed from the skin side.

[0015] [ Figure 2 ] Figure 2 A is a schematic cross-sectional view of the ventral side waist section 3 of diaper 1. Figure 2 B is a schematic cross-sectional view of the crotch area 5 of diaper 1. Figure 2 C is a schematic cross-sectional view of the back side waist section 7 of diaper 1.

[0016] [ Figure 3 ] Figure 3 A and Figure 3 B is an explanatory diagram showing the hot melt adhesives A1 to A9 used in the diaper 1 according to the first embodiment.

[0017] [ Figure 4 ] Figure 4 This is an exploded 3D view of the perimeter of the fastening band 30.

[0018] [ Figure 5 ] Figure 5 This is a schematic diagram showing the arrangement of the insecticidal fragrance 40 in the cross-section of the fastening band 30.

[0019] [ Figure 6 ] Figure 6 A and Figure 6 B is an explanatory diagram showing the hot melt adhesives A1 to A9 used in the diaper 1 according to the second embodiment.

[0020] [ Figure 7 ] Figure 7 A and Figure 7 B is an explanatory diagram showing a variant example of diaper 1 according to the second embodiment.

[0021] [ Figure 8 ] Figure 8 This is an exploded perspective view of the periphery of the outer cover piece 24 in the modified diaper 1.

[0022] [ Figure 9 ] Figure 9 A and Figure 9 B is an explanatory diagram showing the hot melt adhesives A1 to A9 used in diaper 1 according to other embodiments. Detailed Implementation

[0023] From the description in this specification and the accompanying drawings, at least the following will become clear.

[0024] The absorbent article includes: a plurality of components; and an insecticidal fragrance disposed in the absorbent article, at least a portion of the plurality of components being bonded by a hot melt adhesive containing an insecticidal ingredient, the adhesive having an insecticidal ingredient containing at least one of α-pinene, β-pinene, and camphene.

[0025] According to the above-mentioned absorbent articles, in addition to the insect-repellent effect of the insect-repellent fragrance, the insect-repellent effect of the hot melt adhesive containing at least one of α-pinene, β-pinene and camphene is also added, and the insect-repellent effect of the absorbent articles is improved.

[0026] In such absorbent articles, the thickener containing the insecticidal ingredient is a thickener using rosin-based resin or a thickener using terpene-based resin.

[0027] According to the above-mentioned absorbent material, the release of α-pinene, β-pinene, and camphene from the hot melt adhesive improves the insect-repellent effect of the absorbent material.

[0028] In such an absorbent article, the plurality of components include an absorbent body and a non-liquid-permeable sheet, the non-liquid-permeable sheet being disposed on the non-skin side relative to the absorbent body in the thickness direction of the absorbent article, and the hot melt adhesive containing the tackifier having the insecticidal ingredient being disposed on the non-skin side relative to the non-liquid-permeable sheet in the thickness direction.

[0029] According to the aforementioned absorbent materials, the odor of the hot-melt adhesive containing at least one of α-pinene, β-pinene, and camphene is more easily released to the outside of the absorbent material. Therefore, the insect-repellent effect is improved, and the user can easily identify the insect-repellent odor.

[0030] In this absorbent article, when viewed from a planar perspective in the thickness direction, the area where the insecticidal fragrance is disposed has a portion that overlaps with the area where the hot melt adhesive containing the tackifier having the insecticidal component is disposed.

[0031] According to the aforementioned absorbent material, by placing an insect-repellent fragrance and a hot-melt adhesive containing an insect-repellent ingredient close to each other, the amount of the active insect-repellent ingredient is locally increased in the area where they are placed, and the insect-repellent effect centered on that area is enhanced. Furthermore, the user can easily identify the insect-repellent odor.

[0032] In such an absorbent article, when the absorbent article is viewed from a planar perspective in the thickness direction, the area where the insecticidal fragrance is disposed does not have a portion overlapping with the area where the hot melt adhesive containing the tackifier having the insecticidal ingredient is disposed.

[0033] Based on the above-mentioned absorbent material, while suppressing the area to which insect-repellent fragrances are applied, it is possible to provide insect-repellent effects over a wide area of ​​the absorbent material.

[0034] In this absorbent material, the insecticidal fragrance contains a fragrance derived from any one of lemongrass, citronella, and lemon eucalyptus.

[0035] Based on the above-mentioned absorbent materials, these materials are preferred because essential oils derived from the aforementioned natural plants are relatively easy to obtain and contain many compounds that are effective in repelling insects.

[0036] In such absorbent articles, the insecticidal fragrance contains a fragrance with a boiling point higher than that of α-pinene, β-pinene, and camphene.

[0037] According to the aforementioned absorbent material, from the initial stage, it releases the odor of a hot-melt adhesive containing at least one of α-pinene, β-pinene, and camphene, thereby achieving an insect-repellent effect. Furthermore, the insect-repellent odor is recognizable to the user from the initial stage. In addition, the high-boiling-point fragrance provides a long-lasting insect-repellent effect.

[0038] In this absorbent article, the insecticidal fragrance, as a fragrance with a high boiling point, contains at least one fragrance selected from Group A below, with a boiling point higher than or equal to 200°C and lower than or equal to 220°C. Group A: citronellol, menthol, α-terpineol, linalyl acetate, isopreneol, ethyl linalool, terpineol acetate, geraniol formate, menthone, borneol, and camphor.

[0039] Based on the above-mentioned absorbent materials, Group A fragrances with higher boiling points can achieve a long-lasting insecticidal effect.

[0040] In this absorbent article, the insecticidal fragrance, as a fragrance with a high boiling point, also contains at least one fragrance selected from Group C with a boiling point above 220°C and below or equal to 270°C. Group C: isoborneol acetate, p-menthane-3,8-diol, 2-(tert-butyl)cyclohexyl acetate, dihydroterpineyl acetate, nerol, 4-tert-butylcyclohexyl acetate, citronellol acetate, nerolidol acetate, geraniol acetate, ethyl linaloyl acetate, tricyclodecenyl acetate, borneol acetate, β-caryophyllene, cis-jasmone, L-carvone, noberyl acetate, menthol, and allyl octanoate.

[0041] Based on the above-mentioned absorbent materials, fragrances with higher boiling points improve the persistence of insecticidal effects.

[0042] In this absorbent material, the insecticidal fragrance is contained in microcapsules.

[0043] According to the aforementioned absorbent material, an odor of a hot-melt adhesive containing at least one of α-pinene, β-pinene, and camphene is released from the initial stage, thereby achieving an insect-repellent effect. Furthermore, the insect-repellent odor is recognizable to the user from the initial stage. In addition, by encapsulating the insect-repellent fragrance in microcapsules, the duration and intensity of the fragrance's effectiveness can be controlled, and the persistence of the insect-repellent effect can be improved.

[0044] In this absorbent article, the hot melt adhesive containing the tackifier having the insecticidal ingredient is disposed on the non-skin side of the absorbent article in the thickness direction relative to the insecticidal fragrance.

[0045] According to the aforementioned absorbent material, from the initial stage, it releases the odor of a hot-melt adhesive containing at least one of α-pinene, β-pinene, and camphene, thereby achieving an insect-repellent effect. Furthermore, the insect-repellent odor is recognizable to the user from the initial stage.

[0046] In this absorbent article, the insecticidal fragrance is disposed on the non-skin side of the absorbent article in the thickness direction relative to the hot melt adhesive containing the tackifier having the insecticidal ingredient.

[0047] Based on the aforementioned absorbent material, the insect-repelling fragrance is easily released onto the outside of the absorbent material. Therefore, the insect-repelling effect is improved, and the user can easily identify the insect-repelling scent.

[0048] In this absorbent article, the weight of the hot melt adhesive containing the thickener having the insecticidal component disposed in the absorbent article is greater than the weight of the insecticidal fragrance disposed in the absorbent article.

[0049] By increasing the weight of the hot melt adhesive with insecticidal effect, rather than increasing the weight of the insecticidal fragrance, the insecticidal effect can be improved while reducing costs.

[0050] In this absorbent article, a portion of the plurality of components are bonded by the hot melt adhesive containing the tackifier having the insecticidal component, and the other components are bonded by the hot melt adhesive not containing the tackifier having the insecticidal component.

[0051] According to the aforementioned absorbent articles, the insect-repellent effect can be improved by using hot melt adhesives containing adhesives with insect-repellent ingredients. Furthermore, by using hot melt adhesives that do not contain adhesives with insect-repellent ingredients, hot melt adhesives suitable for each part of the absorbent article can be appropriately applied.

[0052] In the following description, as an example of an absorbent article according to this embodiment, a baby strip-type disposable diaper will be described. However, absorbent articles are not limited to this, and adult disposable diapers, underwear-type disposable diapers, lightweight incontinence pads, sanitary napkins, underwear liners, etc., may also be used.

[0053] ===Basic Structure of Belt-Type Disposable Diaper 1===

[0054] Figure 1 This is a plan view of a strip-shaped disposable diaper 1 (hereinafter also referred to as "diaper") in a stretched and extended state along its length when viewed from the skin side. Figure 2 A is a schematic cross-sectional view of the ventral side waist section 3 of diaper 1. Figure 2 B is a schematic cross-sectional view of the crotch area 5 of diaper 1. Figure 2 C is a schematic cross-sectional view of the back side waist section 7 of diaper 1.

[0055] The diaper 1 has a length direction (longitudinal) and a width direction (transverse). Furthermore, the diaper 1 has an abdominal waist section 3, applied to the wearer's abdomen, a crotch section 5, applied to the wearer's groin, and a back waist section 7, arranged side-by-side in the length direction. Figure 2 As shown in Figure A, the direction in which the components of diaper 1 overlap with each other is called the thickness direction. In the thickness direction, the side that comes into contact with the wearer is called the skin side, and the side opposite to the skin side is called the non-skin side.

[0056] The diaper 1 includes an absorbent body 21, a front panel 22, a leak-proof panel 23, an outer panel 24, a pair of side panels 26, a waist gather film 28, a target tape 29, and a pair of fastening straps 30.

[0057] The absorbent core 21 has an absorbent core 211. Examples of absorbent core 211 may include an absorbent core, a SAP sheet, an air-laid sheet, etc., wherein: the absorbent core is obtained by molding liquid absorbent fibers (e.g., pulp fibers) containing a superabsorbent polymer (so-called SAP) into a predetermined shape; in the SAP sheet, the SAP layer is bonded to a hydrophilic sheet; in the air-laid sheet, the liquid absorbent fibers are formed into a sheet by an air-laying method. The absorbent core 211 may be covered with a core cover 212 made of liquid-permeable tissue paper, non-woven fabric, etc.

[0058] The front sheet 22 is a liquid-permeable sheet disposed on the skin side relative to the absorbent 21 in the thickness direction. The leak-proof sheet 23 is a non-liquid-permeable sheet disposed on the non-skin side relative to the absorbent 21 in the thickness direction. The outer sheet 24 is a sheet (e.g., a non-woven sheet) disposed on the non-skin side relative to the leak-proof sheet 23 in the thickness direction. A pair of side sheets 26 are sheets (e.g., non-woven sheets) extending outward in the width direction from both sides of the front sheet 22.

[0059] The end edge of the leg opening forming the diaper 1 is provided with a pair of leg elastic members 15 (e.g., elastic thread or stretch sheet) that are elastic in the longitudinal direction, so that the diaper 1 fits around the wearer's legs. The leg elastic members 15 are fixed between the side piece 26 and the outer piece 24 in an extended state in the longitudinal direction.

[0060] Additionally, a pair of leak-proof wall elastic members 16 (e.g., elastic lines or stretchable sheets) that extend and retract in the length direction are provided at the inner position of the leg circumference elastic member 15 in the width direction. The leak-proof wall elastic members 16 are fixed in an extended state in the length direction between the portions of the inner side portions of each side piece 26 that fold outwards in the width direction (see...). Figure 2 B). The contraction of the leak-proof wall elastic member 16 causes a portion of the side panel 26 to stand up toward the skin, thereby blocking excrement.

[0061] In the back waist section 7, the waist pleated membrane 28 is disposed between the absorbent body 21 and the leak-proof sheet 23 (see...). Figure 2 C). The waist pleat membrane 28 is a strip-shaped member that stretches along its width. The waist pleat membrane 28 gives the back waist section 7 elasticity, allowing the diaper 1 to fit snugly around the wearer's waist.

[0062] Furthermore, a pair of wings 14 are provided on both sides of the back waist portion 7 in the width direction. The wings 14 are mainly formed by side panels 26 and outer panels 24. A pair of fastening straps 30 extend from the back waist portion 7 (wings 14) to the two outer sides in the width direction (lateral direction). The fastening straps 30 are sheet members with a generally rectangular shape that is long in the width direction (e.g., hydrophobic spunbond nonwoven fabric sheet). The fastening straps 30 have a fixing portion 32 for fixing to the back waist portion 7 and an extension portion 31 extending from the back waist portion. In addition, a hook member 33 (e.g., male member of a hook and loop fastener) is provided on the skin-side surface of each fastening strap 30 to engage with the ventral waist portion 3.

[0063] The target band 29 is configured on the non-skin side of the outer piece 24 in the ventral waist section 3 (see...). Figure 2 A). The target strip 29 is a component capable of engaging with the hook member 33 of the fastening strip 30, and is formed, for example, from a non-woven fabric sheet. In this embodiment, the target strip 29 is a component having a rectangular shape extending along the width direction.

[0064] When diaper 1 is put on, the unfolded diaper 1 is folded in half approximately longitudinally at the center when applied to the wearer. Next, the pair of wings 14 on the back waist section 7 are folded inward in the width direction. Finally, the hook members 33 of the fastening strap 30 are fastened to the target strap 29 on the ventral waist section 3.

[0065] However, the construction of diaper 1 is not limited to the above-described construction. For example, a construction in which diaper 1 does not have target strap 29 and the hook member 33 of fastening strap 30 directly engages with outer sheet 24 is also acceptable. Furthermore, for example, diaper 1 need not include waist pleat membrane 28 and / or outer sheet 24.

[0066] ===First Implementation Method===

[0067] Figure 3 A and Figure 3 B is an explanatory diagram showing the hot melt adhesives A1 to A9 used in the diaper 1 according to the first embodiment. Figure 3 A is a cross-sectional view showing the ventral side of diaper 1. Figure 3 B is a cross-sectional view showing the back side of diaper 1. Figure 4 This is an exploded 3D view of the perimeter of the fastening band 30. Figure 5 This is a schematic diagram showing the arrangement of the insecticidal fragrance 40 in the cross-section of the fastening band 30.

[0068] As described above, the diaper 1 is formed of multiple components such as the absorbent core 21 and the front panel 22. Figure 3 A and Figure 3 As shown in Figure B, the components of diaper 1 are bonded to adjacent components in the thickness direction using hot melt adhesives A1 to A9. In the diaper 1 of the first embodiment, all components are bonded to their own adjacent components using hot melt adhesives A1 to A9. However, the construction is not limited to this, as long as at least a portion of the plurality of components included in diaper 1 are bonded by hot melt adhesive. That is, some components can be bonded by methods other than bonding methods using hot melt adhesive (e.g., heat fusion bonding).

[0069] In addition, for example, in Figure 4 In the diagram, the areas where hot melt adhesive A4, A8, and A9 are applied are indicated by slashes. However, the hot melt adhesive can be applied to the entire area or partially within an area. That is, the hot melt adhesive can be applied in a solid manner or in a known coating pattern (e.g., spiral pattern, Ω-shaped pattern, line pattern, etc.).

[0070] Typically, hot melt adhesives consist of a raw material polymer (thermoplastic block copolymer) as the main component and a tackifier. Additionally, depending on the requirements, hot melt adhesives may include waxes, plasticizers, fillers, stabilizers, etc.

[0071] Furthermore, in the diaper 1 of the first embodiment, an insect-repelling fragrance 40 with an insect-repelling effect (insect-repelling effect, repellent effect) is disposed on the non-skin side 301 of the extension 31 of the fastening band 30. It should be noted that the non-skin side of the fastening band 30 refers to the outer side (opposite to the wearer's side) when the fastening band 30 is fastened to the target band 29 when the diaper 1 is worn, and also refers to the lower side of the fastening band 30 when the skin side surface of the diaper 1 is facing upwards in the unfolded state. Figure 1 As shown.

[0072] By incorporating an insect-repellent fragrance 40 into the diaper 1, insects such as mosquitoes can be kept away from the wearer when the diaper 1 is worn, thereby preventing insect bites. Furthermore, insects can be prevented from entering the diaper 1 during its transport and storage, thus maintaining the hygiene of the diaper 1.

[0073] Furthermore, preferably, the insecticidal fragrance 40 is contained in microcapsules (membrane material). Examples of microcapsules include those that rupture due to physical pressure (impact, friction) and release the insecticidal fragrance 40. Specifically, capsules (membrane components) using polyurethane resin, gelatin, gelatin / gum arabic, melamine resin, urea / formalin resin, etc., alone or in combination, can be exemplified.

[0074] By encapsulating the insect-repellent fragrance 40 in microcapsules, the duration and intensity of its effectiveness can be controlled. For example, the fragrance 40 can be prevented from evaporating before the diaper 1 is put on, ensuring that it functions as an insect repellent when the diaper 1 is worn. Furthermore, if a stronger effect is needed, vigorous rubbing can be applied to intensify the scent, and if the effect is perceived to be weakening, additional rubbing can be performed to break down any remaining damaged capsules. This improves the durability of the insect-repellent effect. Specifically, in the diaper 1 of the first embodiment, the insect-repellent fragrance 40 is disposed within the fastening band 30. Therefore, since the fastening band 30 is held in place when the diaper 1 is worn, the microcapsules are easily damaged, thus reliably performing the insect-repellent function when the diaper 1 is worn.

[0075] However, the weight of the insecticidal fragrance 40 that can be contained in the microcapsules is limited. Therefore, there is a risk that the insecticidal fragrance 40 may not be effective enough in repelling insects. Furthermore, even if the number of microcapsules is increased to increase the weight of the insecticidal fragrance 40, the number of unbroken microcapsules may also increase. Then, the amount of insecticidal fragrance 40 released to the outside does not increase, and the insecticidal effect remains insufficient.

[0076] Therefore, in the diaper 1 of the first embodiment, at least a portion of the plurality of components included in the diaper 1 are bonded by a hot melt adhesive containing an insect-repellent adhesive. The insect-repellent adhesive contains at least one of α-pinene, β-pinene, and camphene. α-pinene, β-pinene, and camphene are known as fragrance components with insect-repellent effects. Therefore, in the diaper 1 of the first embodiment, in addition to the insect-repellent function of the insect-repellent fragrance 40, the insect-repellent function of the hot melt adhesive containing the aforementioned fragrance component is also obtained, and the insect-repellent effect is improved. In other words, the weight of the insect-repellent fragrance 40 disposed in the diaper 1 can be reduced to the level of the insect-repellent effect of the hot melt adhesive containing the insect-repellent adhesive, thereby enabling cost reduction.

[0077] Specifically, as mentioned above, when the insecticidal fragrance 40 is contained in microcapsules, the weight of the insecticidal fragrance 40 that can be contained in the microcapsules is limited, and some microcapsules may not rupture. In other words, there is a risk that the insecticidal fragrance 40 may not be sufficiently effective at repelling insects. In this case, the insecticidal effect can be supplemented by a hot-melt adhesive containing a thickener with insecticidal components.

[0078] Tackifiers using rosin-based and terpene-based resins can be used as tackifiers with insecticidal components (that is, tackifiers containing at least one of α-pinene, β-pinene, and camphene). Examples of rosin-based resins include rosin-type resins such as gum rosin, tall oil rosin, and wood rosin; modified rosin-type resins such as hydrogenated rosin, disproportionated rosin, and polymerized rosin; and rosin esters such as glycerol esters of modified rosin and pentaerythritol esters of modified rosin. Examples of terpene-based resins include terpene resins such as α-pinene-based, β-pinene-based, and dipentene-based resins; aromatic modified terpene resins, hydrogenated terpene resins, and terpene phenolic resins. In diapers 1 formulated with a hot-melt adhesive containing such tackifier, α-pinene, β-pinene, and camphene are released, thereby achieving an insecticidal effect. In the following description, hot melt adhesives containing tackifiers with insecticidal ingredients are also referred to as "insect-resistant adhesives IA".

[0079] It should be noted that, as a tackifier that does not contain α-pinene, β-pinene, and camphene, a petroleum-based resin tackifier can be used as an example. In the following description, hot melt adhesives that do not contain tackifiers with insecticidal components are also referred to as "non-insect-resistant adhesives NA".

[0080] Furthermore, in the diaper 1 of the first embodiment, the insect repellent fragrance 40 is disposed in the non-skin side 301 of the extension 31 of the fastening band 30. In each fastening band 30, the fixing part 32 is sandwiched between the side piece 26 and the outer piece 24, and the extension 31 is exposed to the outside. Therefore, by disposing the insect repellent fragrance 40 in the extension 31 instead of the fixing part 32, the insect repellent fragrance 40 is more easily released to the outside of the diaper 1, improving the insect repellent effect.

[0081] In addition, such as Figure 5 As shown, the non-skin side portion 301 of the fastening band 30 (extension 311) is the portion of the fastening band 30 on the non-skin side relative to the intermediate position C in the thickness direction. Furthermore, the portion of the fastening band 30 on the skin side relative to the intermediate position C in the thickness direction is defined as the skin side portion 302 of the fastening band 30.

[0082] Because the insect repellent fragrance 40 is positioned closer to the non-skin side (outer side) of the diaper 1, it is more easily released to the outside of the diaper 1. Therefore, by placing the insect repellent fragrance 40 in the non-skin side 301 of the fastening band 30 (extension 31), the fragrance is easily released to the outside of the diaper 1, improving the insect repellent effect. This also makes it easier for the user of the diaper 1 to recognize the scent of the insect repellent fragrance 40. Thus, it provides the user with anticipation of the insect repellent effect, and the user is more likely to actually experience the insect repellent effect.

[0083] It should be noted that the insect repellent fragrance 40 is disposed on the non-skin side 301 of the fastening band 30, meaning that the weight of the insect repellent fragrance 40 disposed on the non-skin side 301 is greater than that disposed on the skin side 302 of the fastening band 30. Preferably, the insect repellent fragrance 40 is disposed only on the non-skin side 301 of the fastening band 30.

[0084] As described above, when the insect repellent fragrance 40 is disposed on the non-skin side 301 of the extension 31 of the fastening band 30, the hot melt adhesive A9 used to bond the hook member 33 to the skin side surface of the extension 31 of the fastening band 30 is preferably the insect repellent adhesive IA. That is, preferably, the hot melt adhesive A9 applied near the position of the insect repellent fragrance 40 is the insect repellent adhesive IA. In this case, in the part where the insect repellent fragrance 40 and the insect repellent adhesive IA (A9) are disposed close to each other, the amount of insect-repellent active ingredient is locally increased, and the insect-repellent effect centered on this part is improved.

[0085] Specifically, in the diaper 1 of the first embodiment, such as Figure 4 As shown, in the thickness direction of the diaper 1, the area where the hot melt adhesive A9 for bonding the hook member 33 to the fastening band 30 is disposed partially overlaps with the area where the insect repellent fragrance 40 is disposed. Preferably, as described above, when the diaper 1 is viewed from a planar perspective in the thickness direction, the area where the insect repellent fragrance 40 is disposed has a portion 401 that overlaps with the area where the insect repellent adhesive A9 is disposed (see [reference]). Figure 4Therefore, in the overlapping area of ​​the insecticidal fragrance 40 and the insect-repellent adhesive IA (A9), the amount of the insecticidal active ingredient locally increases, and the insect-repellent effect centered on that area is improved. Thus, it can be said that the hot-melt adhesive A9 of the adhesive hook member 33 is preferably the insect-repellent adhesive IA.

[0086] It should be noted that, as described above, when confirming the configuration relationship between the insecticidal fragrance 40 and the insect-repellent adhesive IA, it is preferable to confirm the configuration relationship when the diaper 1 is unfolded and stretched (the same applies below). In the case of a belt-type diaper as described in this embodiment, such as Figure 1 As shown, the configuration is preferably confirmed when the diaper 1 is unfolded and stretched without wrinkles. Specifically, the stretched state refers to the state in which the diaper 1 is stretched such that the dimensions of each component of the diaper 1 match or approach the dimensions of the components themselves when the components are not affected by the elastic members of the diaper 1. Furthermore, although not shown, in the case of panty-type diapers, the configuration is preferably confirmed when the joints on the left and right sides of the waist are untied and unfolded.

[0087] Furthermore, in the first embodiment, the insect repellent fragrance 40 is disposed on the non-skin side of the diaper 1 relative to the insect repellent adhesive IA (A9) in the thickness direction, and the hook member 33 is bonded to the fastening band 30 using the insect repellent adhesive IA (A9). Therefore, the insect repellent fragrance 40 is easily released to the outside of the diaper 1, and the insect repellent effect of the fragrance 40 is improved. This also makes it easier for the user to identify the scent of the insect repellent fragrance 40.

[0088] Furthermore, preferably, not only is the hot melt adhesive A9 for the adhesive hook member 33 an insect repellent adhesive IA, but the hot melt adhesive applied to the area near the insect repellent fragrance 40 is also an insect repellent adhesive IA. For example, preferably, the hot melt adhesive A8 for securing the fastening band 30 to the side panel 26 or the hot melt adhesive A4 for securing the fastening band 30 to the outer panel 24 is an insect repellent adhesive IA. In this case, in the portion where the insect repellent fragrance 40 and the insect repellent adhesives IA (A8 and A4) are positioned close to each other, the amount of insect-repellent active ingredient is locally increased, and the insect repellent effect centered on that portion is improved.

[0089] As described above, preferably, the weight of the insect-repellent adhesive IA disposed in the diaper 1 is greater than the weight of the insect-repellent fragrance 40 disposed in the diaper. That is, instead of increasing the insect-repellent fragrance 40 to improve the insect-repellent effect, increasing the weight of the insect-repellent adhesive IA, which functions as both a component for bonding the diaper 1 and an insect-repellent component, can reduce the cost of the diaper 1.

[0090] Furthermore, the placement of the insect-repellent adhesive IA is not limited to a position near the insect-repellent fragrance 40. For example, the absorbent 21 included in the diaper 1 is a component with a relatively large thickness. Therefore, compared to the hot melt adhesive applied to the non-skin side of the absorbent 21, the odors of the hot melt adhesives A1 and A2 applied to the skin side of the absorbent 21 and the hot melt adhesive A3 applied inside the absorbent 21 are relatively difficult to release to the outside of the diaper 1. Therefore, preferably, the hot melt adhesive that bonds the non-skin side components disposed on the non-skin side of the absorbent 21 to each other is the insect-repellent adhesive IA. This makes it easier for the odor of the insect-repellent adhesive IA, which contains at least one of α-pinene, β-pinene, and camphene, to be released to the outside of the diaper 1, thereby improving the insect-repellent effect.

[0091] Specifically, the leak-proof sheet 23 (which is a non-permeable sheet) has lower air permeability compared to a permeable sheet (e.g., an outer sheet 24 formed of a non-woven fabric sheet), and the odor of the insect repellent adhesive IA is difficult to penetrate the leak-proof sheet 23. Therefore, preferably, the insect repellent adhesive IA is disposed on the non-skin side relative to the leak-proof sheet 23 in the thickness direction of the diaper 1. That is, preferably, at least some of the insect repellent adhesives IA disposed in the diaper 1 are disposed on the non-skin side relative to the leak-proof sheet 23. This makes it easier for the odor of the insect repellent adhesive IA containing at least one of α-pinene, β-pinene, and camphene to be released to the outside of the diaper 1, thereby improving the insect repellent effect.

[0092] Specifically, in this embodiment ( Figure 3 A and Figure 3 B) The hot melt adhesive relative to the leak-proof sheet 23 on the non-skin side, that is, the hot melt adhesive A6 used to bond the leak-proof sheet 23 to the outer cover sheet 24, and the hot melt adhesive A7 used to bond the outer cover sheet 24 to the target strip 29, is an insect-repellent adhesive IA. Furthermore, the hot melt adhesive relative to the absorbent 21 on the non-skin side, that is, the hot melt adhesive A4 used to bond the absorbent 21 to the waist pleated membrane 28 or the leak-proof sheet 23, and the hot melt adhesive A5 used to bond the waist pleated membrane 28 to the leak-proof sheet 23, is also an insect-repellent adhesive IA.

[0093] Furthermore, in this embodiment, the insect-repellent fragrance 40 is disposed within the fastening band 30. In this case, the insect-repellent fragrance 40 has a higher insect-repellent effect on the wearer's ventral side, while its insect-repellent effect on the wearer's dorsal side is lower compared to the ventral side. However, the hot-melt adhesive A6 for bonding the leak-proof sheet 23 to the outer sheet 24, and the hot-melt adhesive A4 for bonding the absorbent 21 to the leak-proof sheet 23, are disposed over a large area of ​​the diaper 1. Therefore, by using the insect-repellent adhesive IA with the hot-melt adhesives A6 and A4, the insect-repellent effect of the insect-repellent adhesive IA can be obtained over a large area of ​​the diaper 1. That is, in areas where the insect-repellent fragrance 40 is not disposed, the insect-repellent effect can be supplemented by the insect-repellent adhesive IA.

[0094] However, the components used to configure the insect-repellent adhesive IA are not limited to the components described above, as long as at least a portion of the plurality of components included in the diaper 1 is bonded by the insect-repellent adhesive IA. For example, in Figure 3 A and Figure 3 In section B, the hot melt adhesives A1 and A2 applied to the skin side relative to the absorbent 21, and the hot melt adhesive A3 applied to the interior of the absorbent 21, are non-insect-repellent adhesives NA, but may also be insect-repellent adhesives IA. Furthermore, for example, the hot melt adhesive around the fastening band 30 and the hot melt adhesive on the non-skin side relative to the absorbent 21 are not limited to insect-repellent adhesives IA, but may also be non-insect-repellent adhesives NA. Additionally, although not shown, the hot melt adhesives used to secure the leg-encircling elastic member 15 and the leak-proof wall elastic member 16, and the hot melt adhesives used to form a leak-proof wall using the side panel 26, may be insect-repellent adhesives IA.

[0095] Furthermore, in this embodiment ( Figure 3 A and Figure 3 (B) Of the plurality of components included in diaper 1, some are bonded with an insect-repellent adhesive IA, and the other components are bonded with a non-insect-repellent adhesive NA. Therefore, the insect-repellent adhesive IA improves the insect-repellent effect, while the use of the non-insect-repellent adhesive NA allows for the appropriate use of hot-melt adhesives suitable for different parts of diaper 1. However, the invention is not limited thereto; all hot-melt adhesives used in diaper 1 can be insect-repellent adhesive IA.

[0096] It should be noted that known methods can be used to confirm the fact that insect repellent adhesive IA is used in diaper 1, to identify the components or areas where insect repellent adhesive IA is applied, and to confirm the weight of insect repellent adhesive IA. For example, after separating each component from diaper 1 using a cold spray or similar method, the components and areas where insect repellent adhesive IA is applied can be visually confirmed. Alternatively, confirmation can be made by sprinkling fine colored granules (such as bamboo charcoal or cocoa powder), then brushing off the granules, and visually confirming the location where the granules adhere. Furthermore, for example, confirmation of whether the adhesive is insect repellent adhesive IA and its weight can be made by placing the component with the hot-melt adhesive in a container, sealing the container, and analyzing the components in the container using gas chromatography-mass spectrometry (GC-MS). Additionally, for example, the weight of insect repellent adhesive IA can be calculated based on the difference between the weight of the component before and after the insect repellent adhesive IA dissolves into toluene (the weight of the component in its dry state).

[0097] Similarly, known methods can be used to identify the components and areas where the insect repellent fragrance 40 is disposed. For example, for each component separated from the diaper 1, component analysis of the component using gas chromatography-mass spectrometry (GC-MS) can confirm whether the insect repellent fragrance 40 is disposed in the component and the weight of the insect repellent fragrance 40 in the component. Furthermore, when the insect repellent fragrance 40 is contained in microcapsules, the components or areas where the insect repellent fragrance 40 is disposed can be identified, for example, by observing the surface or cross-section of the component using an electron microscope.

[0098] Furthermore, as described above, in the diaper 1 of the first embodiment, the insect repellent fragrance 40 is disposed in the non-skin side 301 of the extension 31 of the fastening band 30. Furthermore, preferably, the weight of the insect repellent fragrance 40 (microcapsules) entering the interior of the fastening band 30 is greater than the weight of the insect repellent fragrance 40 positioned on the non-skin side surface 30b of the fastening band 30. This prevents the microcapsules from easily breaking down and releasing the insect repellent fragrance 40, improving the durability of the insect repellent effect. It should be noted that the non-skin side surface 30b of the fastening band 30 is a surface formed by the apex of the most prominent fiber in the nonwoven fiber layer constituting the fastening band 30. The interior of the fastening band 30 refers to its inner portion.

[0099] For this purpose, preferably, the following operation is performed. First, the average particle size (e.g., 5 μm to 15 μm) of the insecticidal fragrance 40 (microcapsules) is made smaller than the average fiber diameter (e.g., 20 μm) of the fastening band 30. Specifically, the weight of the insecticidal fragrance 40 with a particle size smaller than the average fiber diameter (20 μm) of the fastening band 30 is greater than the weight of the insecticidal fragrance 40 with a particle size larger than the average fiber diameter (20 μm) of the fastening band 30. As a result, the insecticidal fragrance 40 can more easily penetrate the interior of the fastening band 30, improving the durability of the insecticidal effect.

[0100] However, if the particle size of the insecticidal fragrance 40 is too small, static electricity is easily generated. The particles cannot move from the top of the non-skin side surface 30b of the fastening band 30 and remain above the non-skin side surface 30b. This makes it difficult for the insecticidal fragrance to penetrate into the interior of the fastening band 30. Therefore, the particle size of the microcapsules containing the insecticidal fragrance 40 is preferably 0.1 μm or more (preferably 0.5 μm or more).

[0101] Furthermore, in order to apply the insecticidal fragrance 40 to the non-skin side 301 of the fastening band 30, it is recommended to apply a liquid containing the insecticidal fragrance 40 dispersed in microcapsules to the non-skin side surface 30b of the fastening band 30. It should be noted that known methods (such as spraying, roller coating, or brushing) can be used as the application method.

[0102] Specifically, in this embodiment, an aqueous dispersion dispersed in water is coated onto the non-skin side surface 30b of the fastening band 30. This aqueous dispersion contains polyvinyl alcohol (PVA) with adhesive properties and microcapsules containing insecticidal fragrance 40. Note that it is recommended to add a hydrophilic agent (0.3%, polyoxyethylene sorbitan monooleate) to the aqueous dispersion to ensure uniform coating of the aqueous dispersion onto the fastening band 30. Furthermore, in this case, it is preferable to add an antifoaming agent (0.2%, polyoxyethylene polyoxypropylene glycol (block copolymer)) according to the added hydrophilic agent.

[0103] Furthermore, the fastening band 30 is preferably formed from a hydrophobic nonwoven fabric sheet or a nonwoven fabric sheet with a high basis weight. In this case, the aqueous dispersion does not travel far in the fastening band 30, and the microcapsules (insect repellent fragrance 40) are easily retained in the non-skin side 301 of the fastening band 30.

[0104] Furthermore, when the insect repellent fragrance 40 is disposed in the fastening band 30, the configuration is not limited to the configuration in this embodiment where the insect repellent fragrance 40 is disposed in the non-skin side 301 of the extension 31 of the fastening band 30. For example, the insect repellent fragrance 40 may be disposed in the skin side 302 of the extension 31 of the fastening band 30, or it may be disposed throughout the entire fastening band 30 in the thickness direction. Additionally, the insect repellent fragrance may be disposed in the fixing portion 32 of the fastening band 30.

[0105] Furthermore, the method for dispensing the insect repellent fragrance 40 into the diaper 1 is not limited to the method described above of applying a dispersion of the insect repellent fragrance 40 contained in microcapsules to the component. For example, a solution of the insect repellent fragrance 40 not contained in microcapsules can be applied to the component. Additionally, for example, the following methods are also acceptable: impregnating the component to which the insect repellent fragrance 40 is to be dispensed with a solution of the insect repellent fragrance 40; or kneading the insect repellent fragrance 40 into the fibers constituting the component. Alternatively, the following method is also acceptable: dispensing the insect repellent fragrance 40 kneaded into wax onto the component so that the insect repellent fragrance 40 is released by the user's friction or heating. Furthermore, in cases where a large amount of the insect repellent fragrance 40 does not penetrate the interior of the component but remains on the surface, the following method is also acceptable: covering the area where the insect repellent fragrance 40 is dispensed with tape, which the user peels off when using the diaper 1. This prevents the insect repellent fragrance from evaporating.

[0106] Next, the insect-repellent fragrance 40 will be described. There are no particular limitations on the insect-repellent fragrance 40, as long as it exerts an insect-repellent effect. Here, among fragrances with insect-repellent effects, the boiling points of α-pinene (155°C to 156°C), β-pinene (165°C to 167°C), and camphene (159°C) contained in the insect-repellent adhesive IA are relatively low. Therefore, preferably, the insect-repellent fragrance 40 is a fragrance with a boiling point higher than that of α-pinene, β-pinene, and camphene.

[0107] In this case, the α-pinene, β-pinene, and camphene, which have low boiling points, contained in the insect-repellent adhesive IA evaporate relatively quickly, thereby achieving an insect-repellent effect. In the initial stage, that is, when the user removes the diaper 1 from the packaging or puts on the diaper 1, the insect-repellent effect is achieved. Furthermore, from the initial stage, the insect-repellent scent is recognizable to the user (attracting the user). This provides the user with anticipation of the insect-repellent effect, making it easier for the user to actually experience the effect. On the other hand, the high-boiling-point fragrance contained in the insect-repellent fragrance 40 requires time to evaporate. Therefore, the high-boiling-point fragrance can improve the persistence of the insect-repellent effect.

[0108] Flavorings with boiling points higher than α-pinene preferably contain at least one flavoring selected from Group A below with a boiling point higher than or equal to 200°C and lower than or equal to 220°C.

[0109] Group A fragrances include: citronellol, menthol, α-terpineol, linalyl acetate, isopreneol, ethyl linalool, terpineol acetate, geraniol formate, menthone, borneol, and camphor. It should be noted that, in addition to the above fragrances, insect repellent fragrance 40 also contains solvents (e.g., isopropyl myristate).

[0110] Thus, while achieving the durability of the insect-repellent fragrance 40, the fragrance is more likely to volatilize at the appropriate time and exert its insect-repellent effect when the diaper 1 is worn.

[0111] In addition to fragrances from Group A, the insecticidal fragrance 40 preferably contains at least one fragrance selected from Group C with a boiling point higher than 220°C and lower than or equal to 270°C, as a fragrance with a boiling point higher than α-pinene, etc. Group C fragrances include: isoborneol acetate, p-menthane-3,8-diol, 2-(tert-butyl)cyclohexyl acetate, dihydroterpineyl acetate, nerol, 4-tert-butylcyclohexyl acetate, citronellol, nerol acetate, geraniol acetate, ethyl linaloyl acetate, tricyclodecenyl acetate, borneol acetate, β-caryophyllene, cis-jasmone, L-carvone, noberyl acetate, menthol, and allyl octanoate. In this case, adding a fragrance with a boiling point higher than that of Group A fragrances can improve the persistence of the insecticidal effect. Here, as mentioned above, the insecticidal fragrance 40 is not limited to fragrances containing only Group A fragrances, or fragrances containing at least one Group A fragrance and at least one Group C fragrance. For example, spices containing only Group C spices can be used.

[0112] Furthermore, preferably, the insecticidal fragrance 40 is contained in microcapsules. In this case, the persistence of the insecticidal fragrance 40 is improved. Therefore, the insecticidal effect is achieved by releasing the low-boiling-point α-pinene, β-pinene, and camphene contained in the insecticidal adhesive IA from the initial stage. In addition, the insecticidal scent can be recognized by the user from the initial stage. On the other hand, the insecticidal fragrance 40 contained in microcapsules can improve the persistence of the insecticidal effect.

[0113] Furthermore, preferably, the insecticidal fragrance 40 contains a variety of fragrances with different boiling points. Specifically, preferably, the insecticidal fragrance 40 includes: at least one fragrance selected from group A above; and at least one fragrance selected from group B with a boiling point of 150°C or higher and lower than 200°C and lower than the boiling point of the fragrances in group A above. In this case, the user can identify the scent of the insecticidal fragrance 40 in the initial stage using the fragrance selected from group B. The insecticidal effect is achieved using the fragrance selected from group A.

[0114] Group B fragrances include: menthol, tetrahydrolinalool, dihydromyrcenol, ocimenol, ocimene, myrcene, α-phellandrene, α-terpinene, γ-terpinene, terpinene, 3-carene, 1-heptanol, 2-heptanol, 3-heptanol, 1-octanol, 2-octanol, 3-octanol, 2-nonanol, 3,5,5-trimethyl-1-hexanol, cis-3-hexenol, trans-2-hexenol, 2,4-hexadien-1-ol, 1-octen-3-ol, 2,6-nonadienol, tetrahydrogalactosyl, 4-thujol, n-heptanol, n-octanol, 3,5,5-trimethylhexanol, cis-3-hexenol, 2,4-hexadienol, 2,6- Nonadienal, heptanal dimethyl acetal, octanal dimethyl acetal, citral dimethyl acetal, 2-heptanone, 2-octanone, 3-octanone, 2-nonanone, 3-nonanone, methyl heptanone, frankincone, acetylfuran, linalool oxide, menthol furan, 1,8-cineole, 1,4-cineole, 2,2,6-trimethyl-6-vinyltetrahydropyran, cis-3-hexenyl carbamate, isoprene acetate, hexyl acetate, cis-3-hexenyl acetate, trans-2-hexenyl acetate, heptanyl acetate, hexyl propionate, cis-3-hexenyl butyrate, cis-3-hexenyl isobutyrate, ethyl 2-methylvalerate, ethyl heptanate, and allyl hexanoate.

[0115] Furthermore, preferably, in the insecticidal fragrance 40, the weight ratio of fragrance from group A is higher than that from group B. In this case, the high weight ratio of fragrance from group A can adequately ensure the insecticidal effect and its durability. On the other hand, although the weight ratio of fragrance from group B is lower, the function of fragrance from group B can be aided by α-pinene and the like contained in the insect-repellent adhesive IA. That is, the user can identify the insecticidal effect by the scent, providing the user with a sense of anticipation for the insecticidal effect.

[0116] The insect-repellent fragrance 40 according to this embodiment has the following characteristics. As a fragrance, 30 to 40% citronellol; 10 to 15% 1,8-cineole; 10 to 15% isoborneol acetate; and less than 1% other fragrances are added to 50% isopropyl myristate as a solvent (by weight; this also applies hereinafter). At least one fragrance selected from group B is included in less than 1% of the "other fragrances." For example, menthol is included.

[0117] Furthermore, all fragrances in groups A, B, and C are free of allergens. Therefore, they provide peace of mind to users regarding allergic reactions. The fragrances in groups A through C do not include any of the following 26 fragrances that are labeled as allergens under the European Union (EU) Cosmetics Directive (76 / 768 / EEC). Therefore, they provide peace of mind to users regarding allergic reactions.

[0118] The 26 fragrances are α-isomethylionone, pentylcinnamaldehyde, pentylcinnamyl alcohol, anisyl alcohol, benzyl alcohol, benzyl benzoate, benzyl cinnamate, benzyl salicylate, butylphenyl methylpropionaldehyde, cinnamaldehyde, cinnamyl alcohol, citral, citronellol, coumarin, eugenol, farnesol, geraniol, hexylcinnamaldehyde, hydroxycitronellol, hydroxyisohexyl-3-cyclohexenylformaldehyde, isoeugenol, limonene, linalool, methyl 2-octynolate, oakmoss extract, and treemoss extract. Here, the term "does not contain" these fragrances indicates that they are substantially absent, not that they are completely absent (completely non-existent). If the fragrance content in an insecticidal fragrance (solvent + fragrance) is less than 1%, it can be considered substantially absent.

[0119] Furthermore, the fragrances in groups A, B, and C do not inhibit the adhesive properties of the hot melt adhesive. Therefore, the fragrances that evaporate in the packaging (packaging component) before the diaper 1 is used act on the hot melt adhesive, preventing the diaper 1 from peeling off, etc. This allows the performance of the diaper 1 to be properly maintained.

[0120] It should be noted that insecticidal fragrances that impede the adhesive properties of hot melt adhesives include: limonene, phenylacetaldehyde, methyl salicylate, thymol, isoeugenol methyl ester, coumarin, β-phenylethanol, cymene, eugenol, carvacrol, phenethyl acetate, safrole, benzyl acetate, styrax acetate, anisyl acetate, cinnamyl acetate, cuminaldehyde, diphenyloxide, and cinnamyl formate. Fragrances in groups A through C do not contain any of these (the definition of "does not contain" for these fragrances is the same as above).

[0121] Here, fragrances can be broadly categorized into natural fragrances and synthetic fragrances. Synthetic fragrances are chemically synthesized and therefore do not contain various fragrance components. Synthetic fragrances include isolated fragrances, fully synthetic fragrances, semi-synthetic fragrances, and biosynthetic fragrances. For example, by using only synthetic fragrances, it is possible to appropriately avoid the presence of substances not included in the insect repellent fragrance 40 (e.g., the aforementioned allergens or substances that inhibit hot melt adhesives).

[0122] However, the invention is not limited thereto, and the insect repellent fragrance 40 may contain natural fragrances. Examples of natural fragrances may include natural essential oils, which are fragrances extracted directly from natural plants. Specifically, the insect repellent fragrance 40 preferably contains a fragrance derived from any one of lemongrass, citronella, and lemon eucalyptus. In this case, an insect-repellent component (e.g., citronellal, citral, geraniol, geraniyl acetate, isoprene, citronellol, etc.) is applied to the diaper 1. Furthermore, since natural essential oils are relatively readily available and contain many compounds that can serve as effective insect repellent components, these materials are preferred.

[0123] ===Second Implementation Method===

[0124] Figure 6 A and Figure 6 B is an explanatory diagram showing the hot melt adhesives A1 to A9 used in the diaper 1 according to the second embodiment. Figure 7 A and Figure 7 B is an explanatory diagram showing a variant example of diaper 1 according to the second embodiment. Figure 6 A and Figure 7 A is a cross-sectional view showing the ventral side of diaper 1. Figure 6 B and Figure 7 B is a cross-sectional view showing the back side of diaper 1. Figure 8 This is an exploded perspective view of the periphery of the outer covering 24 of the modified diaper 1. In the following description, the differences in construction between the diaper 1 according to the second embodiment and the diaper 1 according to the first embodiment will be primarily explained.

[0125] In the diaper 1 of the second embodiment, the insect repellent fragrance 40 is disposed in the outer covering sheet 24. As described above, since the leak-proof sheet 23 has relatively low breathability, it is preferable that the insect repellent fragrance 40 is disposed on the non-skin side relative to the leak-proof sheet 23 in the thickness direction of the diaper 1. That is, preferably, as in this embodiment, the insect repellent fragrance 40 is disposed on the outer covering sheet 24, or as described later. Figure 9 As shown in Figure A, the insect repellent fragrance 40 is disposed on the target strip 29. This allows the scent of the insect repellent fragrance 40 to be released more easily to the outside of the diaper 1, thereby improving the insect repellent effect. This also makes it easier for the user of the diaper 1 to recognize the scent of the insect repellent fragrance 40.

[0126] Furthermore, in the case where the insect repellent fragrance 40 is disposed in the fastening band 30 in the diaper 1 as in the first embodiment, the insect repellent fragrance 40 is disposed on the wearer's abdominal side. On the other hand, since the outer cover 24 forms the external shape of the diaper 1, the insect repellent fragrance 40 can be disposed not only on the wearer's abdominal side, but also at positions on the diaper 1 corresponding to the wearer's desired areas, such as the back or around the legs. In addition, the insect repellent fragrance 40 can be disposed over a large area of ​​the diaper 1.

[0127] Furthermore, the insecticidal fragrance 40 can be disposed throughout the entire outer cover 24 in the thickness direction, and can be disposed on the skin-side or non-skin-side of the outer cover 24. Specifically, preferably, by applying the insecticidal fragrance 40, for example, from the skin-side of the outer cover 24, a larger amount of the insecticidal fragrance 40 can be disposed in the portion located on the skin-side at the middle position relative to the thickness direction of the outer cover 24. In this case, the persistence of the insecticidal fragrance 40 can be improved. Alternatively, by applying the insecticidal fragrance 40, for example, from the non-skin-side of the outer cover 24, a larger amount of the insecticidal fragrance 40 can be disposed in the portion located on the non-skin-side at the middle position relative to the thickness direction of the outer cover 24. In this case, the insecticidal fragrance 40 is easily released to the outside of the diaper 1, thereby improving the insecticidal effect and making it easier for the user to identify the scent of the insecticidal fragrance 40.

[0128] In addition, the outer casing 24 has such Figure 6 As shown in Figure A, the area covered by target band 29 from the non-skin side, and as... Figure 6 B shows the outermost layer (non-skin side surface) of diaper 1. When the insect repellent fragrance 40 is disposed in the portion of the outer covering 24 located inside the target strip 29, the target strip 29 is preferably a breathable sheet (e.g., a non-woven fabric sheet). Therefore, compared to the insect repellent fragrance 40 disposed in a portion that does not overlap with the target strip, the portion of the outer covering 24 that overlaps with the target strip 29 (…)… Figure 6 The insect-repellent fragrance 40 in A) can suppress immediate volatilization. On the other hand, the part disposed on the outermost layer of the diaper 1, which is the outer cover 24 ( Figure 6 The insect-repellent fragrance 40 in B) is easily released to the outside of the diaper 1, thereby improving the insect-repellent effect and making it easier for users to identify the scent of the insect-repellent fragrance 40.

[0129] Similarly, in the diaper 1 of the second embodiment, at least a portion of the plurality of components are bonded together by an insect-repellent adhesive IA containing an adhesive agent having an insect-repellent component (at least one of α-pinene, β-pinene, and camphene). This improves the insect-repellent effect of the diaper 1.

[0130] For example, preferably, the hot melt adhesive A7 used to bond the target strip 29 to the outer cover 24 is an insect repellent adhesive IA. In other words, preferably, the insect repellent adhesive IA is disposed on the non-skin side relative to the insect repellent fragrance 40 in the thickness direction of the diaper 1.

[0131] This makes it easier for the odor of the insect-repellent adhesive IA, containing at least one of α-pinene, β-pinene, and camphene, to be released onto the exterior of the diaper 1. Therefore, the insect-repellent effect of the insect-repellent adhesive IA is improved, and the user can easily identify the scent of the insect-repellent fragrance. On the other hand, the immediate evaporation of the insect-repellent fragrance 40 disposed on the skin side relative to the insect-repellent adhesive IA can be suppressed, and the persistence of the insect-repellent fragrance 40 can be improved.

[0132] In addition, Figure 6 In section A, the insect-repellent fragrance 40 is disposed in the portion of the outer cover 24 that overlaps with the target strip 29. Therefore, when the diaper 1 is viewed from a planar perspective in the thickness direction, the area where the insect-repellent fragrance 40 is disposed has a portion that overlaps with the area where the insect-repellent adhesive IA is disposed. In this case, in the portion where the insect-repellent fragrance 40 and the insect-repellent adhesive IA overlap, the amount of the insect-repellent active ingredient locally increases, and the insect-repellent effect centered on this portion is enhanced.

[0133] Furthermore, as described in the first embodiment, the odor of the hot melt adhesive disposed on the non-skin side relative to the absorbent 21 and the leak-proof sheet 23 is easily released to the outside of the diaper 1. Therefore, in Figure 6 A and Figure 6 In B, the hot melt adhesive A4 used to bond the absorber 21 to the waist pleated film 28 or the leak-proof sheet 23, the hot melt adhesive A5 used to bond the waist pleated film 28 to the leak-proof sheet 23, and the hot melt adhesive A6 used to bond the leak-proof sheet 23 to the outer cover sheet 24 are also insect-repellent adhesives IA.

[0134] However, the invention is not limited thereto, as long as at least a portion of the plurality of components included in the diaper 1 is bonded by an insect-repellent adhesive IA. For example, in Figure 7 A and Figure 7 In the variant shown in B, only the hot melt adhesive A7 that bonds the target strip 29 to the outer cover 24 is an insect-repellent adhesive IA. Furthermore, as... Figure 8 As shown, the insect-repellent fragrance 40 is disposed in the portion of the outer sheet 24 that does not overlap with the target strip 29 in the thickness direction of the diaper 1. In other words, it is acceptable that the area where the insect-repellent fragrance 40 is disposed does not overlap with the area where the insect-repellent adhesive IA is disposed when the diaper 1 is viewed from a planar perspective in the thickness direction. In this case, the area where the insect-repellent fragrance 40 is not disposed achieves an insect-repellent effect through the insect-repellent component (α-pinene, β-pinene, or camphene) contained in the insect-repellent adhesive IA. That is, an insect-repellent effect can be achieved over a large area of ​​the diaper 1 through the insect-repellent adhesive IA, while cost reduction is achieved by limiting the area where the insect-repellent fragrance 40 is disposed.

[0135] ===Other Implementation Methods===

[0136] Although the above embodiments of the present invention have been described, they are intended to facilitate understanding of the invention and not to limit its interpretation. Furthermore, variations or modifications can be made to the invention within the scope of its spirit, and it goes without saying that the invention also includes equivalent solutions.

[0137] Figure 9 A and Figure 9 B is an explanatory diagram showing the hot melt adhesives A1 to A9 used in diaper 1 according to other embodiments. In the above embodiments, the case where the insect repellent fragrance 40 is disposed in the fastening band 30 or the outer sheet 24 has been illustrated, but the present invention is not limited thereto. The insect repellent fragrance 40 may be disposed in any of the plurality of components included in diaper 1. For example, the insect repellent fragrance 40 may be disposed inside the absorbent body 21.

[0138] Additionally, for example, such as Figure 9 A and Figure 9 As shown in Figure B, the insect-repellent fragrance 40 can be incorporated into the target strip 29. Also in this case, preferably, at least a portion of the plurality of components included in the diaper 1 are bonded by the insect-repellent adhesive IA. This improves the insect-repellent effect.

[0139] Furthermore, in this configuration, since the target strip 29 forms the outermost layer (non-skin side surface) of the diaper 1, the insect repellent fragrance 40 is positioned on the non-skin side relative to the hot melt adhesive (insect repellent adhesive IA) in the thickness direction. Therefore, the insect repellent fragrance 40 is easily released to the outside of the diaper 1, improving the insect repellent effect and making it easier for the user to identify the insect repellent fragrance 40.

[0140] Furthermore, when the diaper 1 is put on, the fastening band 30 is fastened to the target band 29. Therefore, preferably, the hot melt adhesive around the fastening band 30 (e.g., adhesive A9 for bonding the hook member 33 to the fastening band 30) is an insect repellent adhesive IA. In this case, in the portion where the insect repellent fragrance 40 and the insect repellent adhesive IA are positioned close to each other, the amount of insect-repellent active ingredient is locally increased, and the insect repellent effect centered on that portion is improved.

[0141] Explanation of reference numerals in the attached figures

[0142] 1: Diapers (absorbent materials)

[0143] 3: Abdominal side waist, 5: Crotch, 7: Back side waist

[0144] 15: Leg circumference elastic component; 16: Leak-proof wall elastic component;

[0145] 21: Absorber; 22: Front panel;

[0146] 23: Leak-proof sheet (non-permeable sheet)

[0147] 24: Outer panel; 26: Side panel;

[0148] 28: Waist fold membrane,

[0149] 29: Target zone

[0150] 30: Fastening band; 31: Extension; 32: Fixing part; 33: Hook component.

[0151] 40: Insect-repelling spices,

[0152] A1 to A9: Hot melt adhesives

[0153] IA: Insect-repellent adhesive (a hot melt adhesive containing a tackifier with insecticidal ingredients)

[0154] NA: Non-insect-resistant adhesive (hot melt adhesive that does not contain tackifiers with insect-repellent ingredients)

Claims

1. An absorbent article comprising: Multiple components; as well as Insect-repellent fragrances incorporated into the absorbent article. At least a portion of the plurality of components are bonded together by a hot melt adhesive containing an adhesive agent with insecticidal components. The thickener contains an insecticidal component comprising at least one of α-pinene, β-pinene, and camphene. An elastic thread capable of stretching is provided at the end edge of the leg opening forming the absorbent article. The absorbent article also includes two fastening straps extending outwards in the width direction from the back waist, each fastening strap having a male component of a hook-and-loop fastener on its skin-side surface that engages with the ventral waist. The insecticidal fragrance is contained in microcapsules, and The weight of the hot melt adhesive containing the thickener having the insecticidal ingredient in the absorbent article is greater than the weight of the insecticidal fragrance in the absorbent article.

2. The absorbent article according to claim 1, characterized in that, The tackifier containing the insecticidal ingredient is a rosin-based resin tackifier or a terpene-based resin tackifier.

3. The absorbent article according to claim 1 or 2, characterized in that, The plurality of components include an absorbent and a liquid-impermeable sheet. The non-permeable sheet is a sheet disposed on the non-skin side relative to the absorbent body in the thickness direction of the absorbent article, and The hot melt adhesive containing the tackifier having the insecticidal component is disposed on the non-skin side relative to the non-liquid-permeable sheet in the thickness direction.

4. The absorbent article according to claim 1, characterized in that, When the absorbent article is viewed from a planar perspective in the thickness direction, The area where the insecticidal fragrance is disposed has a portion that overlaps with the area where the hot melt adhesive containing the tackifier having the insecticidal ingredient is disposed.

5. The absorbent article according to claim 1, characterized in that, When the absorbent article is viewed from a planar perspective in the thickness direction, The area where the insecticidal fragrance is applied does not overlap with the area where the hot melt adhesive containing the tackifier having the insecticidal ingredient is applied.

6. The absorbent article according to claim 1, characterized in that, The insecticidal fragrance contains a fragrance derived from any one of lemongrass, citronella, and lemon eucalyptus.

7. The absorbent article according to claim 1, characterized in that, The insecticidal fragrance contains fragrances with boiling points higher than those of α-pinene, β-pinene, and camphene.

8. The absorbent article according to claim 7, characterized in that, The insecticidal fragrance, being a fragrance with a high boiling point, contains at least one fragrance selected from Group A below, with a boiling point higher than or equal to 200°C and lower than or equal to 220°C. Group A: Citronellol, Menthol, α-terpineol, Linaloyl acetate, Isopreneol, Ethyl linalool, Terpineol acetate, Geraniol formate, Menthone, Borneol, and Camphor.

9. The absorbent article according to claim 8, characterized in that, The insecticidal fragrance, being a fragrance with a high boiling point, also contains at least one fragrance selected from group C below, with a boiling point higher than 220°C and lower than or equal to 270°C. Group C: Isoborneol acetate, p-menthane-3,8-diol, 2-(tert-butyl)cyclohexyl acetate, dihydroterpineyl acetate, nerol, 4-tert-butylcyclohexyl acetate, citronellol acetate, nerolithyl acetate, geraniol acetate, ethyl linaloyl acetate, tricyclodecenyl acetate, borneol acetate, β-caryophyllene, cis-jasmone, L-carvone, noberyl acetate, menthol, and allyl octanoate.

10. The absorbent article according to claim 1, characterized in that, The hot melt adhesive containing the tackifier having the insecticidal ingredient is disposed on the non-skin side of the absorbent article in the thickness direction relative to the insecticidal fragrance.

11. The absorbent article according to claim 1, characterized in that, The insecticidal fragrance is disposed on the non-skin side of the absorbent article in the thickness direction relative to the hot melt adhesive containing the tackifier having the insecticidal ingredient.

12. The absorbent article according to claim 1, characterized in that, A portion of the plurality of components are bonded together by the hot melt adhesive containing the tackifier having the insecticidal component, and Other components of the plurality of components are bonded together by the hot melt adhesive which does not contain the tackifier having the insecticidal component.

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