Absorbent articles

Abstract

To enhance the insect-repellent effect of absorbent materials containing insect-repellent fragrances. [Solution] An absorbent article (1) having multiple materials and having an insect repellent fragrance (40) arranged thereon, wherein at least a portion of the multiple materials are bonded together with a hot melt adhesive (IA) containing an tackifier having an insect repellent component, and the tackifier having an insect repellent component contains at least one of α-pinene, β-pinene, and camphene.

Description

Technical Field

[0001] The present invention relates to absorbent articles.

Background Art

[0002] Patent Document 1 discloses an absorbent article to which a microencapsulated natural plant extract showing an insect repellent effect is applied. Some natural plants (for example, cinnamon, rosemary, lavender, mint, eucalyptus, etc.) contain aroma components having a repellent effect, and by applying an extract of such a natural plant to an absorbent article, insects can be prevented from approaching the absorbent article.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the weight of the insect repellent fragrance that can be contained in the microcapsules is limited. Therefore, there is a risk that the insect repellent effect by the insect repellent fragrance becomes insufficient. Further, even if the number of microcapsules is increased to increase the weight of the insect repellent fragrance, the number of undamaged microcapsules tends to increase. Then, the amount of the insect repellent fragrance released to the outside does not increase, and the insect repellent effect remains insufficient.

[0005] The present invention has been made in view of the above problems, and an object thereof is to enhance the insect repellent effect of an absorbent article in which an insect repellent fragrance is disposed.

Means for Solving the Problems

[0006] The main invention for achieving the above objective is an absorbent article having multiple materials and having an insect-repellent fragrance arranged thereon, wherein at least a portion of the multiple materials are bonded together with a hot-melt adhesive containing an tackifier having an insect-repellent component, and the tackifier having an insect-repellent component contains at least one of α-pinene, β-pinene, and camphene. Other features of the present invention will be made clearer by description in this specification and the accompanying drawings. [Effects of the Invention]

[0007] According to the present invention, the insect-repellent effect of an absorbent article containing an insect-repellent fragrance can be enhanced. [Brief explanation of the drawing]

[0008] [Figure 1] This is a plan view of a tape-type disposable diaper 1 in its unfolded and extended state, as seen from the skin side. [Figure 2] Figure 2A is a schematic cross-sectional view of the ventral waist portion 3 of diaper 1, Figure 2B is a schematic cross-sectional view of the crotch portion 5 of diaper 1, and Figure 2C is a schematic cross-sectional view of the dorsal waist portion 7 of diaper 1. [Figure 3] Figures 3A and 3B are explanatory diagrams of the hot melt adhesives A1 to A9 used in the diaper 1 of the first embodiment. [Figure 4] This is an exploded perspective view of the area around the fastening tape 30. [Figure 5] This diagram schematically shows the arrangement of insect repellent fragrance 40 in a cross-section of fastening tape 30. [Figure 6] Figures 6A and 6B are explanatory diagrams of the hot melt adhesives A1 to A9 used in the diaper 1 of the second embodiment. [Figure 7] Figures 7A and 7B are explanatory diagrams of modified examples of the diaper 1 of the second embodiment. [Figure 8] This is an exploded perspective view of the area around the outer sheet 24 in the modified diaper 1. [Figure 9]Figures 9A and 9B are explanatory diagrams of hot melt adhesives A1 to A9 used in diaper 1 of other embodiments. [Modes for carrying out the invention]

[0009] The following matters become clear from this specification and the accompanying drawings: An absorbent article having multiple materials and having an insect repellent fragrance placed thereon, wherein the multiple materials At least some of our products use hot melt adhesives that contain an tackifier with insect repellent properties. The adhesive agent, which is bonded together and contains the insect repellent component, is α-pinene, β-pinene, and An absorbent article characterized by containing at least one of the following: bi, camphene.

[0010] According to such absorbent materials, in addition to the insect-repellent effect of insect-repellent fragrances, α-pinene, A hot melt adhesive containing at least one of β-pinene and camphene. The added insect-repellent effect enhances the insect-repellent properties of absorbent materials.

[0011] The absorbent article is characterized in that the tackifier having the insect repellent component is made of a rosin-based resin or a terpene-based resin.

[0012] With such absorbent materials, α-pinene, β-pinene, and camphene are released from the hot-melt adhesive, enhancing the insect-repellent effect of the absorbent material.

[0013] The absorbent article is characterized in that the plurality of materials comprises an absorbent body and a liquid-impermeable sheet disposed on the non-skin side of the absorbent body in the thickness direction of the absorbent article, and a hot-melt adhesive containing the insect-repellent component is disposed on the non-skin side of the liquid-impermeable sheet in the thickness direction.

[0014] According to such an absorbent article, the fragrance of the hot-melt adhesive containing at least one of α-pinene, β-pinene, and camphene is likely to be released to the outside of the absorbent article. Therefore, the insect repellent effect is enhanced, and it becomes easier for the user to recognize the smell of the insect repellent.

[0015] Such an absorbent article, when the absorbent article is viewed in a plan view in the thickness direction thereof, a region where the insect repellent fragrance is disposed has a portion overlapping with a region where a hot-melt adhesive containing a tackifier having the insect repellent component is disposed. An absorbent article characterized by that.

[0016] According to such an absorbent article, since the insect repellent fragrance and the hot-melt adhesive containing a tackifier having the insect repellent component are disposed close to each other, the amount of the active ingredient of the insect repellent locally increases in that portion, and the insect repellent effect centered on that portion is enhanced. Also, it becomes easier for the user to recognize the smell of the insect repellent.

[0017] Such an absorbent article, when the absorbent article is viewed in a plan view in the thickness direction thereof, a region where the insect repellent fragrance is disposed does not have a portion overlapping with a region where a hot-melt adhesive containing a tackifier having the insect repellent component is disposed. An absorbent article characterized by that.

[0018] According to such an absorbent article, while suppressing the area where the insect repellent fragrance is disposed, an insect repellent effect can be imparted over a wide range of the absorbent article.

[0019] Such an absorbent article, wherein the insect repellent fragrance contains a fragrance derived from any of lemongrass, citronella, and lemon eucalyptus. An absorbent article characterized by that.

[0020] According to such an absorbent article, the essential oil derived from the above natural plant is relatively easy to obtain and contains many compounds that are active ingredients for insect repellent, which is preferable.

[0021] The absorbent article is characterized in that the insect repellent fragrance contains a fragrance with a boiling point higher than that of α-pinene, β-pinene, and camphene.

[0022] With such absorbent materials, the scent of a hot-melt adhesive containing at least one of α-pinene, β-pinene, and camphene is released from the initial stage, providing an insect-repellent effect. Furthermore, the insect-repellent scent can be perceived by the user from the initial stage. Furthermore, the use of fragrances with high boiling points ensures a long-lasting insect-repellent effect.

[0023] The absorbent article is characterized in that the insect repellent fragrance contains at least one fragrance selected from group (A) with a boiling point of 200°C or more and 220°C or less as the fragrance with a high boiling point. Group (A): citronellal, menthol, α-terpineol, linalyl acetate, isopulegol, ethyl linalool, terpinyl acetate, geranyl formate, menthone, borneol, camphor

[0024] With such absorbent materials, the long-lasting insect-repellent effect can be achieved by using fragrances of group (A) with high boiling points.

[0025] The absorbent article is characterized in that the insect repellent fragrance further contains at least one fragrance selected from group (C) having a boiling point higher than 220°C and 270°C or lower, as the fragrance with a high boiling point. Group (C): Isobornyl acetate, p-menthane-3,8-diol, 2-(tert-butyl)cyclohexyl acetate, dihydroterpinyl acetate, nerol, 4-tert-butylcyclohexyl acetate, citronellyl acetate, neryl acetate, geranyl acetate, ethyl linalyl acetate, tricyclodecenyl acetate, bornyl acetate, β-caryophyllene, cis-jasmone, L-carbone, nopyru acetate, pulegone, allyl octanoate

[0026] With such absorbent materials, the use of fragrances with higher boiling points further enhances the duration of the insect-repellent effect.

[0027] An absorbent article characterized in that the insect repellent fragrance is contained in microcapsules.

[0028] With such absorbent materials, the scent of a hot-melt adhesive containing at least one of α-pinene, β-pinene, and camphene is released from the initial stage, providing an insect-repellent effect. Furthermore, the insect-repellent scent can be perceived by the user from the initial stage. Furthermore, by encapsulating the insect-repellent fragrance in microcapsules, it is possible to control the timing and intensity of the fragrance's function, as well as enhance the duration of the insect-repellent effect.

[0029] The absorbent article is characterized in that, in the thickness direction of the absorbent article, the hot melt adhesive containing the tackifier having the insect repellent component is positioned on the non-skin side of the insect repellent fragrance.

[0030] According to such absorbent articles, of α-pinene, β-pinene, and camphene... The scent of hot melt adhesive containing at least one of these ingredients is released from the initial stage, providing an insect repellent effect. This can be achieved. Furthermore, the scent of insect repellent can be made known to users from the early stages.

[0031] In such an absorbent article, the insect repellent fragrance is distributed in the thickness direction of the absorbent article. , rather than a hot melt adhesive containing the aforementioned insect repellent component, the non-skin side is positioned An absorbent article characterized by being [likely a specific material or feature].

[0032] With such absorbent materials, insect repellent fragrances are more easily released to the outside of the absorbent material. This enhances the insect repellent effect and makes the scent of the insect repellent more easily recognizable to users.

[0033] Such absorbent article, comprising a hot melt adhesive containing the insect repellent component The weight of the adhesive is greater than that of the insect repellent fragrance when placed on the absorbent article. Absorbent articles with distinctive features.

[0034] With such absorbent materials, instead of increasing the weight of insect repellent fragrance, the insect repellent effect is By increasing the weight of a certain hot melt adhesive, the cost can be reduced while enhancing its insect-repellent effect. It is possible.

[0035] An absorbent article characterized in that some of the plurality of materials are bonded together with a hot melt adhesive containing a tackifier having the insect repellent component, and other parts of the plurality of materials are bonded together with a hot melt adhesive that does not contain the tackifier having the insect repellent component.

[0036] With such absorbent materials, the insect-repellent effect can be enhanced by using a hot-melt adhesive containing an insect-repellent tackifier. Furthermore, by also using a hot-melt adhesive that does not contain an insect-repellent tackifier, it is possible to select the appropriate hot-melt adhesive for each part of the absorbent material.

[0037] The following description will use a tape-type disposable diaper for children as an example of an absorbent article according to the embodiment. However, the absorbent article is not limited to the above, and can also be adult disposable diapers, pull-up type disposable diapers, light incontinence pads, sanitary napkins, panty liners, etc.

[0038] ===Basic components of tape-type disposable diapers 1=== Figure 1 is a plan view of a tape-type disposable diaper 1 (hereinafter also referred to as "diaper") as seen from the skin side when unfolded and extended in the longitudinal direction. Figure 2A is a schematic cross-sectional view of the ventral waist portion 3 of diaper 1, Figure 2B is a schematic cross-sectional view of the crotch portion 5 of diaper 1, and Figure 2C is a schematic cross-sectional view of the dorsal waist portion 7 of diaper 1.

[0039] Diaper 1 has a longitudinal direction (vertical direction) and a width direction (horizontal direction). Diaper 1 also has a ventral waist portion 3 that is placed against the wearer's abdominal side, a crotch portion 5 that is placed against the wearer's crotch, and a dorsal waist portion 7 that is placed against the wearer's back, all arranged in the longitudinal direction. As shown in Figure 2A, the direction in which the components constituting diaper 1 are stacked is called the thickness direction. In the thickness direction, the side that is in contact with the wearer is called the skin side, and the opposite side is called the non-skin side.

[0040] Diaper 1 comprises an absorbent core 21, a top sheet 22, a leak-proof sheet 23, an outer sheet 24, a pair of side sheets 26, a waist gather film 28, a target tape 29, and a pair of fastening tapes 30.

[0041] The absorbent body 21 has an absorbent core 211. Examples of the absorbent core 211 include a material formed by molding a liquid-absorbing fiber such as pulp fiber containing a superabsorbent polymer (so-called SAP) into a predetermined shape, an SAP sheet in which an SAP layer is attached to a hydrophilic sheet, and an airlaid sheet in which liquid-absorbing fibers are formed into a sheet by the airlaid method. The absorbent core 211 may be covered with a core wrap 212 such as liquid-permeable tissue paper or nonwoven fabric.

[0042] The top sheet 22 is a liquid-permeable sheet positioned on the skin side of the absorbent 21 in the thickness direction. The leak-proof sheet 23 is a liquid-impermeable sheet positioned on the non-skin side of the absorbent 21 in the thickness direction. The outer sheet 24 is a sheet (e.g., nonwoven fabric) positioned on the non-skin side of the leak-proof sheet 23 in the thickness direction. The pair of side sheets 26 are sheets (e.g., nonwoven fabric) that extend outward in the width direction from both sides of the top sheet 22 in the width direction.

[0043] The edges forming the leg openings of the diaper 1 are provided with a pair of leg-area elastic members 15 (e.g., elastic thread or elastic sheet) that expand and contract in the longitudinal direction, so that the diaper 1 fits around the wearer's legs. The leg-area elastic members 15 are fixed in an extended state in the longitudinal direction between the side sheet 26 and the outer sheet 24.

[0044] Furthermore, a pair of leak-proof elastic members 16 (e.g., elastic thread or elastic sheet) that expand and contract in the longitudinal direction are provided inside the leg-around elastic member 15 in the width direction. The leak-proof elastic members 16 are fixed in an extended state in the longitudinal direction between the portions where the inner side of the side sheet 26 in the width direction is folded back to the outside in the width direction (see Figure 2B). When the leak-proof elastic members 16 contract, a part of the side sheet 26 stands up on the skin side, and excrement is blocked.

[0045] In the dorsal waist area 7, a waist gather film 28 is positioned between the absorbent material 21 and the leak-proof sheet 23 (see Figure 2C). The waist gather film 28 is a strip-shaped member that stretches and contracts along its width. The waist gather film 28 provides elasticity to the dorsal waist area 7, allowing the diaper 1 to fit the wearer's waist.

[0046] Furthermore, a pair of flap portions 14 are provided on both sides of the width direction of the dorsal waist portion 7. The flap portions 14 are mainly composed of a side sheet 26 and an outer sheet 24. A pair of fastening tapes 30 extend outwards on both sides in the width direction (lateral direction) from the dorsal waist portion 7 (flap portions 14). The fastening tape 30 is a sheet member (for example, a hydrophobic spunbond nonwoven fabric) that is long in the width direction and has a fixing portion 32 that is fixed to the dorsal waist portion 7 and an extending portion 31 that extends from the dorsal waist portion. In addition, a hook material 33 (for example, the male member of a hook-and-loop fastener) that engages with the ventral waist portion 3 is provided on the skin side of the fastening tape 30.

[0047] The target tape 29 is positioned on the non-skin side of the outer sheet 24 of the ventral girth portion 3 (see Figure 2A). The target tape 29 is a member that can engage with the hook material 33 of the fastening tape 30, and is made of, for example, nonwoven fabric. In this embodiment, the target tape 29 is a rectangular member along the width direction.

[0048] When diaper 1 is put on, the unfolded diaper 1 is placed against the wearer and folded in half approximately in the longitudinal direction. Next, the pair of flap portions 14 of the dorsal waist portion 7 are folded inward in the width direction. Finally, the hook material 33 of the fastening tape 30 is secured to the target tape 29 of the ventral waist portion 3.

[0049] However, the configuration of diaper 1 is not limited to the above. For example, diaper 1 may not have a target tape 29, and the hook material 33 of the fastening tape 30 may be directly attached to the outer sheet 24. They may be engaged. Also, for example, the diaper 1 may be attached to the waist gather film 28 or outer shell. It is not necessary to have element 24.

[0050] ===First Embodiment=== Figures 3A and 3B show the hot melt adhesive A1~ used in diaper 1 of the first embodiment. This is an explanatory diagram for A9. Figure 3A is a cross-sectional view of the ventral side of diaper 1, and Figure 3B is a cross-sectional view of the dorsal side of diaper 1. This is a cross-sectional view. Figure 4 is an exploded perspective view of the area around the fastening tape 30. Figure 5 is a cross-sectional view. This diagram schematically shows the arrangement of insect repellent fragrance 40 in the cross-section of fastening tape 30. .

[0051] As mentioned above, diaper 1 is composed of multiple materials such as absorbent material 21 and top sheet 22. As shown in Figures 3A and 3B, each material of diaper 1 is adjacent in the thickness direction. The materials in contact with each other are joined with hot melt adhesives A1 to A9. Diaper 1 of the first embodiment So, all the materials are bonded to adjacent materials with hot melt adhesives A1-A9. Furthermore, and not limited to this, if at least some of the multiple materials that diaper 1 contains are hot It is sufficient if they are bonded with hot melt adhesive. In other words, some materials can be bonded with hot melt adhesive. The parts may be bonded using a method other than the bonding method (for example, heat welding).

[0052] Furthermore, for example, in Figure 4, the areas where hot melt adhesives A4, A8, and A9 are placed are indicated by diagonal lines, but the hot melt adhesive may be placed over the entire area or partially within the area. In other words, the hot melt adhesive may be applied as a solid coating or in a well-known coating pattern (e.g., spiral pattern, Ω pattern, line pattern, etc.).

[0053] Generally, hot melt adhesives consist of a base polymer (thermoplastic block copolymer) as the main component and a tackifier. Additionally, waxes, plasticizers, fillers, stabilizers, etc., may be included in hot melt adhesives as needed.

[0054] Furthermore, in the diaper 1 of the first embodiment, an insect repellent fragrance 40 having an insect repellent effect (insect-repellent effect, repellent effect) is placed on the non-skin side 301 of the extended portion 31 of the fastening tape 30. The non-skin side of the fastening tape 30 is the side that is on the outside (opposite side from the wearer) when the fastening tape 30 is fastened to the target tape 29 when the diaper 1 is worn, and is the side that is on the bottom of the fastening tape 30 when the unfolded diaper 1 is positioned with the skin side facing upwards, as shown in Figure 1.

[0055] The presence of insect-repellent fragrance 40 in diaper 1 prevents mosquitoes and other insects from approaching the wearer while wearing diaper 1, thereby reducing the risk of insect bites. Furthermore, it helps prevent insects from entering diaper 1 during distribution and storage, keeping diaper 1 hygienic.

[0056] Furthermore, it is preferable that the insect repellent fragrance 40 is contained in microcapsules (membrane material). Examples of microcapsules include those that break down due to physical pressure (impact, friction) and release the insect repellent fragrance 40 inside. Specifically, examples of capsules (membrane material) include those using urethane resin, gelatin, gelatin-gum arabic, melamine resin, urea-formaldehyde resin, etc., either alone or in combination.

[0057] Because the insect repellent fragrance 40 is contained in microcapsules, the timing and intensity of the fragrance's function can be controlled. For example, it is possible to prevent the insect repellent fragrance 40 from evaporating before the diaper 1 is worn, and to ensure that the insect repellent function is activated while the diaper 1 is being worn. Furthermore, in situations where a stronger effect is needed, the fragrance can be intensified by rubbing it harder, or if the effect is felt to be weakening, it can be rubbed again to break any remaining capsules, thereby increasing the duration of the insect repellent effect. In particular, in the diaper 1 of the first embodiment, the insect repellent fragrance 40 is placed on the fastening tape 30. Therefore, because the fastening tape 30 is gripped when the diaper 1 is put on, the microcapsules are easily broken, ensuring that the insect repellent function is reliably activated while the diaper 1 is being worn.

[0058] However, the weight of insect repellent fragrance 40 that can be contained in microcapsules is limited. Therefore, there is a risk that the insect repellent effect of the insect repellent fragrance 40 may be insufficient. In addition, even if the number of microcapsules is increased to increase the weight of insect repellent fragrance 40, the number of microcapsules that do not break tends to increase. In that case, the amount of insect repellent fragrance 40 released to the outside does not increase, and the insect repellent effect remains insufficient.

[0059] Therefore, in the diaper 1 of the first embodiment, at least a portion of the multiple materials that make up the diaper 1 are bonded together with a hot-melt adhesive containing an insect repellent component. The insect repellent component containing an insect repellent component contains at least one of α-pinene, β-pinene, and camphene. α-pinene, β-pinene, and camphene are known as fragrance components that have 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, an insect repellent function is also obtained from the hot-melt adhesive containing the above fragrance component, thus enhancing the insect repellent effect. In other words, the weight of the insect repellent fragrance 40 placed in the diaper 1 can be reduced by the amount of the insect repellent effect from the hot-melt adhesive containing the insect repellent component, thereby reducing the cost of the diaper 1.

[0060] In particular, when the insect repellent fragrance 40 is contained in microcapsules, as mentioned above, there may be limitations on the weight of the insect repellent fragrance 40 that can be contained in the microcapsules, or some microcapsules may not break. In other words, there is a risk that the insect repellent effect of the insect repellent fragrance 40 may be insufficient. In such cases, the insect repellent effect can be supplemented with a hot melt adhesive containing an adhesive agent that has an insect repellent component.

[0061] Examples of tackifiers containing insect repellent components, namely tackifiers containing at least one of α-pinene, β-pinene, and camphene, include those using rosin-based resins or terpene-based resins. Examples of rosin-based resins include gum rosin, tall rosin, wood rosin, and other rosins; modified rosins such as hydrogenated rosin, disproportionated rosin, and polymerized rosin; and rosin esters such as glycerin esters of modified rosin and pentaerythritol esters. Examples of terpene-based resins include α-pinene-based, β-pinene-based, and dipentene-based terpene resins, as well as aromatically modified terpene resins, hydrogenated terpene resins, and terpene phenol resins. In diaper 1, which contains a hot-melt adhesive with these tackifiers, α-pinene, β-pinene, and camphene are released, providing an insect repellent effect. In the following explanation, hot melt adhesives containing an insect repellent component and a tackifier will also be referred to as "insect-repellent adhesive IA".

[0062] Examples of tackifiers that do not contain α-pinene, β-pinene, or camphene include those using petroleum-based resins. In the following explanation, hot melt adhesives that do not contain tackifiers with insect repellent components will also be referred to as "non-insect repellent adhesives NA".

[0063] Furthermore, in the diaper 1 of the first embodiment, the insect repellent fragrance 40 is placed on the non-skin side 301 of the extension portion 31 of the fastening tape 30. Of the fastening tape 30, the fixing portion 32 is sandwiched between the side sheet 26 and the outer sheet 24, and the extension portion 31 is exposed to the outside. Therefore, because the insect repellent fragrance 40 is placed on the extension portion 31 rather than the fixing portion 32, the insect repellent fragrance 40 is more easily released to the outside of the diaper 1, and the insect repellent effect is enhanced.

[0064] Furthermore, the non-skin side portion 301 of the fastening tape 30 (extension portion 311) is as shown in Figure 5. This refers to the part of the fastening tape 30 that is on the non-skin side of the midpoint C in the thickness direction. Furthermore, the part of the fastening tape 30 that is closer to the skin than the midpoint C in the thickness direction is fastened This is the skin-facing side 302 of the rubbing tape 30.

[0065] The insect repellent fragrance 40 is released to the outside of diaper 1 to the extent that it is placed on the non-skin side (outside) of diaper 1. It is easily released. Therefore, insects can get into the non-skin side 301 of the fastening tape 30 (extension portion 31). The placement of the insect-repellent fragrance 40 makes it easier for the insect-repellent fragrance 40 to be released to the outside of the diaper 1. Furthermore, the insect repellent effect is enhanced. Also, users of diaper 1 recognize the scent of insect repellent fragrance 40. It becomes cheaper. As a result, it can give users a sense of expectation regarding the insect repellent effect, and also the user - This makes it easier to feel the insect repellent effect.

[0066] Furthermore, an insect repellent fragrance 40 is placed on the non-skin side 301 of the fastening tape 30. This means that the non-skin side 301 of the fastening tape 30 has more than the skin side 302. The weight of the insect repellent fragrance 40 is arranged. Preferably, fastening tape The insect repellent fragrance 40 is placed only on the non-skin side 301 of 30.

[0067] In this way, insect repellent fragrance 4 is applied to the non-skin side portion 301 of the extension portion 31 of the fastening tape 30. If 0 is present, the hot melt adhesive A9 used to adhere the hook material 33 to the skin side of the extension portion 31 of the fastening tape 30 should be replaced with insect repellent adhesive IA. In other words, the hot melt adhesive A9 applied in a position close to the insect repellent fragrance 40 should be replaced with insect repellent adhesive IA. By doing so, the amount of the active ingredient in the insect repellent increases locally in the area where the insect repellent fragrance 40 and the insect repellent adhesive IA (A9) are placed close together, and the insect repellent effect centered on that area is enhanced.

[0068] In particular, in the diaper 1 of the first embodiment, as shown in Figure 4, in the thickness direction of the diaper 1, the area where the hot melt adhesive A9 for bonding the hook material 33 to the fastening tape 30 is placed and the area where the insect repellent fragrance 40 is placed partially overlap. Thus, when the diaper 1 is viewed in plan in the thickness direction, it is preferable that the area where the insect repellent fragrance 40 is placed has a portion 401 (see Figure 4) that overlaps with the area where the insect repellent adhesive IA is placed. By doing so, the amount of the active ingredient in the insect repellent increases locally in the area where the insect repellent fragrance 40 and the insect repellent adhesive IA (A9) overlap, and the insect repellent effect centered on that area is enhanced. From this point of view as well, it is preferable to use the insect repellent adhesive IA instead of the hot melt adhesive A9 for bonding the hook material 33.

[0069] As mentioned above, when checking the arrangement of the insect repellent fragrance 40 and the insect repellent adhesive IA, it is best to do so with the diaper 1 unfolded and stretched (the same applies hereafter). In the case of a tape-type diaper, as in this embodiment, it is best to check with the diaper 1 unfolded and stretched without wrinkles, as shown in Figure 1. Specifically, the stretched state means that the diaper 1 is stretched until the dimensions of each material constituting the diaper 1 match or are close to the dimensions of the individual material, without being affected by the elastic member. Although not shown in the figures, in the case of a pant-type diaper, it is best to check with the left and right seams around the waist undone and the diaper unfolded.

[0070] Furthermore, in the first embodiment, in the thickness direction of the diaper 1, the insect repellent fragrance 40 is positioned on the non-skin side of the insect repellent adhesive IA(A9) that adheres the hook material 33 to the fastening tape 30. As a result, the insect repellent fragrance 40 is more easily released to the outside of the diaper 1, and the insect repellent effect of the insect repellent fragrance 40 is enhanced. In addition, the user is more likely to recognize the scent of the insect repellent fragrance 40.

[0071] Furthermore, it is advisable to use insect-repellent adhesive IA not only for the hot-melt adhesive A9 used to bond the hook material 33, but also for any hot-melt adhesive applied in close proximity to the insect-repellent fragrance 40. For example, it is advisable to use insect-repellent adhesive IA for the hot-melt adhesive A8 used to fix the fastening tape 30 to the side sheet 26, and for the hot-melt adhesive A4 used to fix the fastening tape 30 to the exterior sheet 24. By doing so, the amount of the active ingredient in the insect repellent increases locally in areas where the insect-repellent fragrance 40 and insect-repellent adhesive IA (A8, A4) are placed close together, thereby enhancing the insect-repellent effect centered on those areas.

[0072] Thus, it is preferable that the weight of the insect-repellent adhesive IA is greater than that of the insect-repellent fragrance 40 when placed in the diaper 1. In other words, instead of increasing the amount of insect-repellent fragrance 40 to enhance the insect-repellent effect, the cost of the diaper 1 can be reduced by increasing the weight of the insect-repellent adhesive IA, which has both the function of bonding the materials of the diaper 1 and the function of insect repellent.

[0073] Furthermore, the placement of the insect-repellent adhesive IA is not limited to a position close to the insect-repellent fragrance 40. For example, the absorbent material 21 of the diaper 1 is a relatively thick material. Therefore, the scent of hot-melt adhesives A1 and A2 applied to the skin side of the absorbent material 21, and hot-melt adhesive A3 applied to the inside of the absorbent material 21, is less likely to be released to the outside of the diaper 1 compared to the scent of hot-melt adhesive applied to the non-skin side of the absorbent material 21. Therefore, it is preferable to use the insect-repellent adhesive IA as the hot-melt adhesive that bonds the non-skin side materials, which are positioned on the non-skin side of the absorbent material 21. By doing so, the scent of the insect-repellent adhesive IA, which contains at least one of α-pinene, β-pinene, and camphene, is more easily released to the outside of the diaper 1, thereby enhancing the insect-repellent effect.

[0074] In particular, the leak-proof sheet 23, which is a liquid-impermeable sheet, has lower breathability compared to a liquid-permeable sheet (for example, the outer sheet 24 made of nonwoven fabric), and the scent of the insect-repellent adhesive IA does not easily pass through the leak-proof sheet 23. Therefore, it is preferable that the insect-repellent adhesive IA be positioned on the non-skin side of the leak-proof sheet 23 in the thickness direction of the diaper 1. In other words, it is preferable that at least a portion of the insect-repellent adhesive IA placed in the diaper 1 be positioned on the non-skin side of the leak-proof sheet 23. By doing so, the scent of the insect-repellent adhesive IA, which contains at least one of α-pinene, β-pinene, and camphene, is more easily released to the outside of the diaper 1, thereby enhancing the insect-repellent effect.

[0075] Specifically, in this embodiment (Figures 3A and 3B), the hot melt adhesives on the non-skin side of the leak-proof sheet 23, namely hot melt adhesive A6 that bonds the leak-proof sheet 23 to the outer sheet 24 and hot melt adhesive A7 that bonds the outer sheet 24 to the target tape 29, are insect-repellent adhesives IA. In addition, the hot melt adhesives on the non-skin side of the absorbent body 21, namely hot melt adhesive A4 that bonds the absorbent body 21 to the waist gather film 28 or the leak-proof sheet 23 and hot melt adhesive A5 that bonds the waist gather film 28 to the leak-proof sheet 23, are also insect-repellent adhesives IA.

[0076] Furthermore, in this embodiment, an insect repellent fragrance 40 is placed on the fastening tape 30. In this case, the insect repellent effect of the insect repellent fragrance 40 is high on the wearer's ventral side and lower on the wearer's dorsal side compared to the ventral side. However, the hot melt adhesive A6 that bonds the leak-proof sheet 23 to the outer sheet 24, and the hot melt adhesive A4 that bonds the absorbent material 21 to the leak-proof sheet 23, are placed over a wide area of ​​the diaper 1. Therefore, by replacing such hot melt adhesives A6 and A4 with insect repellent adhesive IA, an insect repellent effect can be obtained over a wide area of ​​the diaper 1 by the insect repellent adhesive IA. In other words, in areas where the insect repellent fragrance 40 is not placed, the insect repellent effect can be supplemented by the insect repellent adhesive IA.

[0077] However, the materials on which the insect-repellent adhesive IA is applied are not limited to those described above; it is sufficient that at least some of the multiple materials of the diaper 1 are bonded with the insect-repellent adhesive IA. For example, in Figures 3A and 3B, hot melt adhesives A1 and A2 are applied to the skin side of the absorbent material 21, and The hot melt adhesive A3 applied to the inside of the absorbent body 21 is a non-insect-repellent adhesive NA. However, these may be insect-repellent adhesive IA. Also, for example, fastening tape 30 The surrounding hot melt adhesive and the hot melt adhesive on the non-skin side of the absorbent material 21 are insect-repellent adhesives. The adhesive is not limited to IA; a non-insect-repellent adhesive NA may also be used. Also, although not shown in the illustration, the leg area Hot melt adhesive for fixing the elastic member 15 and the leak-proof wall elastic member 16, and side sheet The hot melt adhesive, etc., used to form a leak-proof wall using 26 is an insect-repellent adhesive IA. That's good too.

[0078] Furthermore, in this embodiment (Figures 3A and 3B), some of the multiple materials that the diaper 1 has are, The materials are bonded together with insect-repellent adhesive IA, and some of the other materials are bonded together with non-insect-repellent adhesive NA. It is bonded together. Therefore, the insect-repellent adhesive IA enhances the insect-repellent effect, while the non-insect-repellent adhesive By also using NA, it is possible to use different hot melt adhesives suitable for each part of the diaper. This is possible. However, it is not limited to this, and applies to all hot melt adhesives used in diapers. It may also be insect-repellent adhesive IA.

[0079] Furthermore, it is necessary to confirm that insect-repellent adhesive IA is used in diaper 1, and that insect-repellent adhesive IA is distributed The materials and areas in which they are placed, as well as the weight of the insect-repellent adhesive IA, should be checked using the well-known method. Good. For example, for materials or areas where insect-repellent adhesive IA is placed, cold spray After separating each material from diaper 1 using a method such as the above, it can be visually inspected, or colored fine particles such as bamboo charcoal or cocoa powder can be sprinkled on each material, the particles can be brushed off, and the material can be inspected at the points where the particles adhere. Furthermore, for example, whether or not it is insect repellent adhesive IA, and its weight, can be confirmed by placing the material containing the hot melt adhesive in a container, sealing it, and analyzing the components in the container using a gas chromatograph (GC-MS). In addition, for example, the weight of insect repellent adhesive IA can be calculated from the difference in weight of the material (weight of the material in a dry state) before and after dissolving the insect repellent adhesive IA in toluene.

[0080] Similarly, the materials and areas where the insect repellent fragrance 40 is placed should be identified using well-known methods. For example, by analyzing the components of each material separated from the diaper 1 using a gas chromatograph (GC-MS), it is possible to confirm whether or not the insect repellent fragrance 40 is placed on the material, and the weight of the insect repellent fragrance 40. In addition, if the insect repellent fragrance 40 is contained in microcapsules, the materials and areas where the insect repellent fragrance 40 is placed can be identified, for example, by examining the surface or cross-section of the material with an electron microscope.

[0081] Furthermore, as mentioned above, in the diaper 1 of the first embodiment, the insect repellent fragrance 40 is placed on the non-skin side 301 of the extended portion 31 of the fastening tape 30. Moreover, it is preferable that the weight of the insect repellent fragrance 40 (microcapsules) embedded inside the fastening tape 30 is greater than the weight of the insect repellent fragrance 40 located on the non-skin side 30b of the fastening tape 30. This prevents the microcapsules from easily disintegrating and releasing the insect repellent fragrance 40, thereby increasing the duration of the insect repellent effect. The non-skin side 30b of the fastening tape 30 is the surface with the most protruding fiber of the nonwoven fiber layer constituting the fastening tape 30 as its apex, and the part inside this is considered the interior of the fastening tape 30.

[0082] To achieve this, the following should be done. First, the average particle size of the insect repellent fragrance 40 (microcapsules) (e.g., 5-15 μm) should be smaller than the average fiber diameter of the fastening tape 30 (e.g., 20 μm). Specifically, the weight of insect repellent fragrance 40 with a particle size smaller than the average fiber diameter of the fastening tape 30 (20 μm) should be greater than the weight of insect repellent fragrance 40 with a particle size larger than the average fiber diameter of the fastening tape 30 (20 μm). Doing so will allow the insect repellent fragrance 40 to penetrate the inside of the fastening tape 30 more easily, increasing the duration of the insect repellent effect.

[0083] However, if the particle size of the insect repellent fragrance 40 is too small, static electricity will easily be generated, causing it to remain on the non-skin side 30b of the fastening tape 30 without rolling, making it difficult for it to penetrate into the fastening tape 30. For this reason, the particle size of the microcapsules containing the insect repellent fragrance 40 should be 0.1 μm or larger (preferably 0.5 μm or larger).

[0084] Furthermore, in order to place the insect repellent fragrance 40 on the non-skin side 301 of the fastening tape 30, it is preferable to apply a liquid containing dispersed insect repellent fragrance 40 encapsulated in microcapsules to the non-skin side 30b of the fastening tape 30. The application method can be any well-known method, such as spraying, roller coating, or brush application.

[0085] Specifically, in this embodiment, an aqueous dispersion is obtained by dispersing microcapsules containing PVA (polyvinyl alcohol) with adhesive properties and insect repellent fragrance 40 in water, and this dispersion is applied to the non-skin side 30b of the fastening tape 30. In order to uniformly apply the aqueous dispersion to the fastening tape 30, it is advisable to add a hydrophilic agent (0.3%, polyoxyethylene sorbitan monooleate) to the aqueous dispersion. In addition, when doing so, it is advisable to add an antifoaming agent (0.2%, polyoxyethylene polyoxypropylene glycol (block copolymer)) along with the hydrophilic agent.

[0086] Furthermore, it is preferable to use a hydrophobic nonwoven fabric or a nonwoven fabric with a relatively high basis weight for the fastening tape 30. Doing so will prevent the aqueous dispersion from moving much within the fastening tape 30, and the microcapsules (insect repellent fragrance 40) will be more likely to remain on the non-skin side 301 of the fastening tape 30.

[0087] Furthermore, when the insect repellent fragrance 40 is placed on the fastening tape 30, it is not limited to placing it on the non-skin side portion 301 of the extended portion 31 of the fastening tape 30, as in this embodiment. For example, the insect repellent fragrance 40 may be placed on the skin side portion 302 of the extended portion 31 of the fastening tape 30, or on the entire thickness of the fastening tape 30. It may also be placed on the fixing portion 32 of the fastening tape 30.

[0088] Furthermore, the method of placing the insect repellent fragrance 40 on the diaper 1 is not limited to the method of applying a dispersion of the insect repellent fragrance 40 contained in microcapsules to the material, as described above. For example, a solution of the insect repellent fragrance 40 that is not contained in microcapsules may be applied to the material. Alternatively, the material on which the insect repellent fragrance 40 is placed may be impregnated with a solution of the insect repellent fragrance 40, or the insect repellent fragrance 40 may be kneaded into the fibers that make up the material. Alternatively, the insect repellent fragrance 40 may be kneaded into wax and placed on the material so that the insect repellent fragrance 40 is released when the user rubs it or heat is applied. In addition, if a large amount of the insect repellent fragrance 40 does not penetrate into the material but remains on the surface, the area on which the insect repellent fragrance 40 is placed may be covered with tape, and the user may remove the tape when using the diaper 1. This prevents the insect repellent fragrance from volatilizing.

[0089] Next, the insect repellent fragrance 40 will be described. The insect repellent fragrance 40 is not particularly limited as long as it is a fragrance that has an insect repellent effect. However, the boiling points of α-pinene (155-156°C), β-pinene (165-167°C), and camphene (159°C) contained in the insect repellent adhesive IA are relatively low among fragrances that have an insect repellent effect. Therefore, it is preferable that the insect repellent fragrance 40 contains a fragrance with a higher boiling point than α-pinene, β-pinene, and camphene.

[0090] By doing so, the low boiling point α-pinene, β-pinene, and can contained in the insect repellent adhesive IA are effectively removed. Fen evaporates relatively quickly, providing insect-repellent effects. In the initial stages, i.e., when the user When removing diaper 1 from the package or when putting on diaper 1, insect repellent effect is obtained. It can also help users become aware of the insect repellent scent from the early stages. (Appeal) (It can be used.) As a result, it can give users a sense of expectation regarding the insect repellent effect, Furthermore, users will be able to more easily experience the insect repellent effect. On the other hand, the boiling point of the insect repellent fragrance 40 High-boiling-point fragrances take time to evaporate. Therefore, high-boiling-point fragrances provide a longer-lasting insect repellent effect. It can improve.

[0091] Specifically, fragrances with a higher boiling point than α-pinene, etc., are those selected from group (A) with a boiling point of It is preferable to include at least one fragrance with a temperature between 200°C and 220°C. The fragrances in group (A) are citronellal, menthol, α-terpineol, and linalyl acetate. Tate, isopulegol, ethyllinalool, terpinyl acetate, geranyl formate, me These are ton, borneol, and camphor. In addition, the insect repellent fragrance 40 contains the above fragrance. It contains a solvent (for example, isopropyl myristate).

[0092] By doing so, the insect repellent fragrance 40 will have lasting effects, and the above will be released at an appropriate time. The fragrance becomes more easily dispersed, and the insect repellent effect is exerted while wearing diaper 1.

[0093] Furthermore, it is preferable that the insect repellent fragrance 40 includes, in addition to the fragrances of group (A), at least one fragrance selected from group (C) with a boiling point higher than 220°C and 270°C or lower, as a fragrance with a higher boiling point than α-pinene, etc. The fragrances of group (C) include isobornyl acetate, p-menthane-3,8-diol, 2-(tert-butyl)cyclohexyl acetate, dihydroterpinyl acetate, nerol, 4-tert-butylcyclohexyl acetate, cyto These include loneryl acetate, neryl acetate, geranyl acetate, ethyl linalyl acetate, tricyclodecenyl acetate, bornyl acetate, β-caryophyllene, cis-jasmone, L-carbone, nopyru acetate, pulegone, and allyl octanoate. By doing so, fragrances with higher boiling points than those in group (A) are added, making it possible to enhance the duration of the insect repellent effect. However, the insect repellent fragrance 40 is not limited to containing only fragrances from group (A) or containing at least one fragrance each from group (A) and group (C), as described above, but may contain only fragrances from group (C), for example.

[0094] Furthermore, it is preferable that the insect repellent fragrance 40 is contained in microcapsules. This increases the persistence of the insect repellent fragrance 40. As a result, α-pinene, β-pinene, and camphene, which have low boiling points and are contained in the insect repellent adhesive IA, are released from the initial stage, providing an insect repellent effect. In addition, the insect repellent scent can be recognized by the user from the initial stage. On the other hand, the insect repellent fragrance 40 contained in microcapsules can enhance the persistence of the insect repellent effect.

[0095] Furthermore, it is preferable that the insect repellent fragrance 40 contains multiple fragrances with different boiling points. Specifically, the insect repellent fragrance 40 preferably contains at least one fragrance selected from group (A) and at least one fragrance selected from group (B) with a boiling point between 150°C and 200°C, which has a lower boiling point than the fragrances in group (A). By doing so, the fragrance selected from group (B) allows the user to recognize the scent of the insect repellent fragrance 40 at an early stage. Then, the fragrance selected from group (A) provides the insect repellent effect.

[0096] (B) The fragrances are menthane, tetrahydrolinalool, dihydromyrcenol, osimenol, ocimene, myrcene, α-phellandrene, α-terpinene, γ-terpinene, terpinolene, 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, tetrahydromugol, 4-thujanol, n-heptanal, n-octanal, 3,5,5-trimethylhexanal, cis-3-hexenal, 2,4-hexadienol These are 2,6-nonadienal, heptanal dimethylacetal, octanal dimethylacetal, citral dimethylacetal, 2-heptanone, 2-octanone, 3-octanone, 2-nonanone, 3-nonanone, methylheptenone, fencone, acetylfuran, linalool oxide, mentfuran, 1,8-cineole, 1,4-cineole, 2,2,6-trimethyl-6-vinyltetrahydropyran, cis-3-hexenyl formate, prenyl acetate, hexyl acetate, cis-3-hexenyl acetate, trans-2-hexenyl acetate, heptyl acetate, hexyl propionate, cis-3-hexenyl butyrate, cis-3-hexenyl isobutyrate, ethyl 2-methylvalerate, ethyl heptanoate, and allyl hexanoate.

[0097] Furthermore, it is preferable that the insect repellent fragrance 40 has a higher weight ratio of group (A) than of group (B). By doing so, the higher weight ratio of group (A) fragrance can appropriately ensure the insect repellent effect and its duration. On the other hand, even if the weight ratio of group (B) fragrance is low, the function of group (B) can be supplemented by α-pinene, etc., contained in the insect repellent adhesive IA. In other words, the insect repellent effect can be perceived by the user through the scent, and the user can be given a sense of expectation regarding the insect repellent effect.

[0098] The insect repellent fragrance 40 according to this embodiment is as follows: To 50% isopropyl myristate (by weight; the same applies hereinafter) as a solvent, 30-40% citronellal, 10-15% 1,8-cineole, 10-15% isobornyl acetate, and less than 1% of other fragrances are added. The "other fragrances" of less than 1% include at least one fragrance selected from group (B). For example, menthane is included.

[0099] Furthermore, the fragrances in groups (A), (B), and (C) are all allergen-free substances. Therefore, they can provide users with peace of mind regarding allergies. In addition, none of the fragrances in groups (A) through (C) contain any of the following 26 fragrances that are required to be labeled as allergens under the EU (European Union) Cosmetics Directive (76 / 768 / EEC). Therefore, they can provide users with peace of mind regarding allergies.

[0100] The 26 fragrances are α-isomethyl ionone, amyl cinnamyl alcohol, amyl cinnamyl alcohol, anise alcohol, benzyl alcohol, benzyl benzoate, benzyl cinnamate, benzyl salicylate, butylhenyl methylpropional, cinnamyl alcohol, citral, citronellol, coumarin, eugenol, farnesol, geraniol, hexyl cinnamal, hydroxycitronellal, hydroxyisohexyl 3-cyclohexene carboxaldehyde, isoeugenol, limonene, linalool, methyl 2-octinate, moss extract, and Ebernia furfrasea extract. Here, "not included" for these fragrances means that the above fragrances are substantially not included, not that the above fragrances are completely absent (not present at all). If the ratio of the fragrance in question to the insect repellent fragrance (solvent + fragrance) is 1% or less, it can be said that it is not effectively present.

[0101] Furthermore, the fragrances in groups (A), (B), and (C) do not interfere with the adhesive performance of the hot melt adhesive. Therefore, the fragrances that volatilize within the package (packaging material) before diaper 1 is used act on the hot melt adhesive, preventing diaper 1 from peeling off or other issues. Therefore, it becomes possible to properly maintain the performance of diaper 1.

[0102] Furthermore, limonene and foxtail grass are used as insect repellent fragrances that can inhibit the adhesive performance of hot melt adhesives. Phenylacetaldehyde, methyl salicylate, thymol, methylisoeugenol, bear Phosphorus, β-phenylethyl alcohol, cymene, eugenol, carvacrol, phen Ethyl acetate, safrole, benzyl acetate, styraryl acetate, anisyl Luacetate, cinnamyl acetate, cumin aldehyde, diphenyl oxide, formic acid Cinnamyl can be cited. Among the fragrances of group (A) to group (C), any of these None of these are included (the definition of "not included" is the same as above).

[0103] Furthermore, fragrances can be broadly divided into natural fragrances and synthetic fragrances. Synthetic fragrances are chemically produced... Because it is a synthetically produced fragrance, it does not contain various fragrance components. This includes isolated fragrances, fully synthetic fragrances, semi-synthetic fragrances, and biosynthetic fragrances. For example, synthetic fragrances only By using this method, substances that you do not want to include in the insect repellent fragrance 40 (for example, the allergens mentioned above) can be excluded. This makes it possible to properly avoid contamination by substances (such as those that inhibit hot-melt adhesives).

[0104] However, the insect repellent fragrance 40 may also contain natural fragrances, without being limited to the above. Examples include natural essential oils, which are directly derived from natural plants, etc. This is a fragrance extracted from a source. Specifically, the insect repellent fragrance 40 contains lemongrass, citronella, Furthermore, it is preferable to include a fragrance derived from either lemon eucalyptus. This will repel insects. Ingredients with insect-repellent properties (e.g., citronellal, citral, geraniol, geranyl acetate, isopulegol, citronellol, etc.) are added to diaper 1. Natural essential oils are also preferred because they are relatively easy to obtain and contain many compounds that are effective insect repellents.

[0105] ===Second Embodiment==== Figures 6A and 6B are explanatory diagrams of the hot melt adhesives A1 to A9 used in the diaper 1 of the second embodiment. Figures 7A and 7B are explanatory diagrams of modified examples of the diaper 1 of the second embodiment. Figures 6A and 7A are cross-sectional views of the ventral side of the diaper 1, and Figures 6B and 7B are cross-sectional views of the dorsal side of the diaper 1. Figure 8 is an exploded perspective view of the area around the outer sheet 24 in the modified diaper 1. The following will mainly describe the differences between the diaper 1 of the second embodiment and the diaper 1 of the first embodiment.

[0106] In the diaper 1 of the second embodiment, an insect repellent fragrance 40 is placed on the outer sheet 24. As mentioned above, since the leak-proof sheet 23 has relatively low breathability, it is preferable that the insect repellent fragrance 40 be positioned on the non-skin side of the diaper 1 in the thickness direction, rather than on the leak-proof sheet 23. That is, it is preferable to place the insect repellent fragrance 40 on the outer sheet 24 as in this embodiment, or on the target tape 29 as shown in Figure 9A described later. Doing so makes it easier for the scent of the insect repellent fragrance 40 to be released to the outside of the diaper 1, thereby increasing the insect repellent effect. In addition, it makes it easier for the user of the diaper 1 to recognize the scent of the insect repellent fragrance 40.

[0107] Furthermore, when the insect repellent fragrance 40 is placed on the fastening tape 30, as in the diaper 1 of the first embodiment, the insect repellent fragrance 40 is placed on the wearer's abdominal side. On the other hand, since the outer sheet 24 forms the outer shape of the diaper 1, the insect repellent fragrance 40 is not limited to the wearer's abdominal side, but can be placed at any desired location on the diaper 1, such as the back or around the legs. In addition, the insect repellent fragrance 40 can be placed over a wide area of ​​the diaper 1.

[0108] Furthermore, the insect repellent fragrance 40 may be distributed over the entire thickness of the outer sheet 24, or it may be distributed on the skin-facing or non-skin-facing side of the outer sheet 24. Specifically, it is preferable to apply the insect repellent fragrance 40 from the skin-facing side of the outer sheet 24, so that more of the fragrance 40 is distributed to the skin-facing side of the outer sheet 24 than the midpoint in the thickness direction. In this case, the persistence of the insect repellent fragrance 40 can be increased. Alternatively, the insect repellent fragrance 40 may be applied from the non-skin-facing side of the outer sheet 24, so that more of the fragrance 40 is distributed to the non-skin-facing side of the outer sheet 24 than the midpoint in the thickness direction. In this case, the insect repellent fragrance 40 is more easily released to the outside of the diaper 1, increasing the insect repellent effect, and the user is more likely to recognize the scent of the insect repellent fragrance 40.

[0109] Furthermore, as shown in Figure 6A, the outer sheet 24 has a portion that is covered by the target tape 29 from the non-skin side, and as shown in Figure 6B, a portion that becomes the outermost layer (non-skin side) of the diaper 1. When the insect repellent fragrance 40 is placed on the portion of the outer sheet 24 inside the target tape 29, the target tape 29 is preferably made of a breathable sheet (e.g., nonwoven fabric). Therefore, the insect repellent fragrance 40 placed on the portion of the outer sheet 24 that overlaps with the target tape 29 (Figure 6A) is less likely to volatilize quickly compared to the insect repellent fragrance 40 placed on the portion that does not overlap. On the other hand, the insect repellent fragrance 40 placed on the portion of the outer sheet 24 that becomes the outermost layer of the diaper 1 (Figure 6B) is more easily released to the outside of the diaper 1, increasing the insect repellent effect, and making it easier for the user to recognize the scent of the insect repellent fragrance 40.

[0110] In the diaper 1 of the second embodiment, at least some of the multiple materials are bonded together with an insect-repellent adhesive IA containing an tackifier having an insect-repellent component (at least one of α-pinene, β-pinene, and camphene). This enhances the insect-repellent effect of the diaper 1.

[0111] For example, the hot melt adhesive A7 used to bond the target tape 29 to the outer sheet 24 may be replaced with insect-repellent adhesive IA. In other words, in the thickness direction of the diaper 1, the insect-repellent adhesive IA should be positioned on the non-skin side of the insect-repellent fragrance 40.

[0112] This makes it easier for the fragrance 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. As a result, the insect-repellent effect of the insect-repellent adhesive IA is enhanced, and the insect-repellent fragrance becomes more easily recognized by the user. On the other hand, the insect-repellent fragrance 40, which is positioned closer to the skin than the insect-repellent adhesive IA, is prevented from evaporating quickly, thereby increasing the persistence of the insect-repellent fragrance 40.

[0113] Furthermore, in Figure 6A, the insect repellent fragrance 40 is placed in the area of ​​the outer sheet 24 that overlaps with the target tape 29. Therefore, when the diaper 1 is viewed in plan in the thickness direction, the area where the insect repellent fragrance 40 is placed overlaps with the area where the insect repellent adhesive IA is placed. As a result, the amount of the active insect repellent ingredient increases locally in the area where the insect repellent fragrance 40 and the insect repellent adhesive IA overlap, enhancing the insect repellent effect centered on that area.

[0114] Furthermore, as explained in the first embodiment, the scent of the hot melt adhesive, which is positioned on the non-skin side of the absorbent material 21 and the leak-proof sheet 23, is easily released to the outside of the diaper 1. For this reason, in Figures 6A and 6B, the hot melt adhesive A4 that bonds the absorbent material 21 to the waist gather film 28 or the leak-proof sheet 23, the hot melt adhesive A5 that bonds the waist gather film 28 to the leak-proof sheet 23, and the hot melt adhesive A6 that bonds the leak-proof sheet 23 to the outer sheet 24 are also insect-repellent adhesives IA.

[0115] However, the above is not limited to the above; it is sufficient that at least some of the multiple materials of the diaper 1 are bonded with insect-repellent adhesive IA. For example, in the modified examples shown in Figures 7A and 7B, only the hot-melt adhesive A7 used to bond the target tape 29 to the outer sheet 24 is made of insect-repellent adhesive IA. Furthermore, as shown in Figure 8, the insect-repellent fragrance 40 is placed in the portion of the outer sheet 24 that does not overlap with the target tape 29 in the thickness direction of the diaper 1. In other words, when the diaper 1 is viewed in plan in its thickness direction, the area where the insect-repellent fragrance 40 is placed may not overlap with the area where the insect-repellent adhesive IA is placed. In this case, in areas where the insect repellent fragrance 40 is not present, the insect repellent contained in the insect repellent adhesive IA The insect-repellent effect is obtained through the insect-repelling components (α-pinene, β-pinene, and camphene). In other words, By reducing the surface area of ​​the insect repellent fragrance 40, cost reduction is achieved, and the insect repellent adhesive IA is used. This provides insect-repellent effects over a wide area of ​​the diaper.

[0116] ===Other Examples=== The embodiments of the present invention have been described above, but the above embodiments make it easier to understand the present invention. This is intended to achieve this, and is not intended to limit the scope of the present invention. This invention may be modified or improved without departing from its purpose, and the present invention does not include equivalents thereof. It goes without saying that this is included.

[0117] Figures 9A and 9B show hot melt adhesive A used in diaper 1 of other embodiments. Diagrams 1-A9 are explanatory diagrams. In the above embodiment, the insect repellent fragrance 40 is fastened with fastening tape. The example given is when it is placed on 30 or the outer sheet 24, but it is not limited to this. Diaper 1 The insect repellent fragrance 40 may be placed in any of the multiple materials that the material possesses. For example, An insect repellent fragrance 40 may be placed inside the container 21.

[0118] Furthermore, as shown in Figures 9A and 9B, for example, insect repellent fragrance is applied to the target tape 29. 40 may also be placed. In this case as well, it is preferable that at least some of the multiple materials that diaper 1 has are bonded with insect-repellent adhesive IA. Doing so can enhance the insect-repellent effect.

[0119] Furthermore, in this case, since the target tape 29 forms the outermost layer (non-skin side) of the diaper 1, the insect repellent fragrance 40 is positioned on the non-skin side rather than the hot melt adhesive (insect repellent adhesive IA) in the thickness direction. As a result, the insect repellent fragrance 40 is more easily released to the outside of the diaper 1, increasing its insect repellent effect, and also making it easier for the user to recognize the insect repellent fragrance 40.

[0120] Furthermore, when diaper 1 is worn, the fastening tape 30 is secured to the target tape 29. For this reason, it is preferable to use insect-repellent adhesive IA for the hot melt adhesive around the fastening tape 30 (for example, A9 which adheres the hook material 33 to the fastening tape 30). By doing so, the amount of active insect repellent ingredients increases locally in the area where the insect repellent fragrance 40 and the insect repellent adhesive IA are placed close together, thereby enhancing the insect repellent effect centered on that area. [Explanation of symbols]

[0121] 1. Diapers (absorbent material), 3. Ventral torso area, 5. Lower leg area, 7. Dorsal torso area, 15 Leg-related elastic members, 16 Leak-proof wall elastic members, 21 absorbent layer, 22 top sheet, 23. Leak-proof sheet (liquid-impermeable sheet), 24 exterior seats, 26 side seats, 28 Waist Gather Film, 29 Target tape, 30 Fastening tape, 31 Extension part, 32 Fixing part, 33 Hook material, 40. Insect repellent fragrance, A1-A9 Hot melt adhesive, IA insect-repellent adhesive (hot melt adhesive containing an tackifier with insect-repellent properties), NA Non-insect-repellent adhesive (hot melt adhesive that does not contain tackifiers with insect-repellent components)

Claims

1. An absorbent article having multiple materials and containing an insect-repellent fragrance, At least some of the aforementioned materials are bonded together with a hot-melt adhesive containing an insect repellent component. The tackifier having the insect repellent component is characterized by containing at least one of α-pinene, β-pinene, and camphene.

2. The absorbent article according to claim 1, The absorbent article is characterized in that the tackifier having the insect repellent component is made of a rosin-based resin or a terpene-based resin.

3. An absorbent article according to claim 1 or 2, The aforementioned plurality of materials comprises an absorbent and a liquid-impermeable sheet positioned on the non-skin side of the absorbent in the thickness direction of the absorbent article, An absorbent article characterized in that, in the thickness direction, a hot melt adhesive containing the insect repellent component and a tackifier is arranged on the non-skin side of the liquid-impermeable sheet.

4. An absorbent article according to any one of claims 1 to 3, The absorbent article is characterized in that, when viewed in plan in the thickness direction, the area where the insect repellent fragrance is placed overlaps with the area where the hot melt adhesive containing the insect repellent component is placed.

5. An absorbent article according to any one of claims 1 to 3, The absorbent article is characterized in that, when viewed in plan in the thickness direction, the area where the insect repellent fragrance is placed does not overlap with the area where the hot melt adhesive containing the insect repellent component is placed.

6. An absorbent article according to any one of claims 1 to 5, The aforementioned insect repellent fragrance is characterized by containing a fragrance derived from lemongrass, citronella, or lemon eucalyptus in an absorbent article.

7. An absorbent article according to any one of claims 1 to 6, The aforementioned insect repellent fragrance is characterized by containing a fragrance with a higher boiling point than α-pinene, β-pinene, and camphene.

8. The absorbent article according to claim 7, The aforementioned insect repellent fragrance is characterized by containing at least one fragrance selected from group (A) with a boiling point of 200°C or higher and 220°C or lower as the fragrance with a high boiling point. (A) Group: Citronellal, Menthol, α-Terpineol, Linalyl Acetate, Isopulegol, Ethyl Linalool, Terpinyl Acetate, Geranyl Formate, Menthone, Borneol, Camphor

9. The absorbent article according to claim 8, The aforementioned insect repellent fragrance is characterized in that, as the fragrance with a high boiling point, it further contains at least one fragrance selected from group (C) having a boiling point higher than 220°C and 270°C or lower, which is used in the absorbent article. (C) Group: Isobornyl acetate, p-menthane-3,8-diol, 2-(tert-butyl)cyclohexyl acetate, dihydroterpinyl acetate, nerol, 4-tert-butylcyclohexyl acetate, citronellyl acetate, neryl acetate, gerani Luacetate, ethyl linalyl acetate, tricyclodecenyl acetate, bornyl acetate Cetate, β-caryophyllene, cis-jasmon, L-carbone, nopilacetate, Pulegone, allyl octanoate

10. An absorbent article according to any one of claims 1 to 9, The aforementioned insect repellent fragrance is contained in microcapsules, and is an absorbent article. 。

11. An absorbent article according to any one of claims 1 to 10, In the thickness direction of the absorbent article, a hot tackifier containing the insect repellent component is provided. The melt adhesive is characterized by being positioned on the non-skin side of the insect repellent fragrance. Astringent goods.

12. An absorbent article according to any one of claims 1 to 10, In the thickness direction of the absorbent article, the insect repellent fragrance is a viscosity having the insect repellent component. The adhesive is positioned on the non-skin side of the hot melt adhesive containing the bonding agent. Astringent goods.

13. An absorbent article according to any one of claims 1 to 12, An absorbent article characterized in that the hot melt adhesive containing the insect repellent component is distributed in a larger weight than the insect repellent fragrance in the absorbent article.

14. An absorbent article according to any one of claims 1 to 13, Some of the aforementioned materials are bonded together with a hot-melt adhesive containing an tackifier having the insect repellent component. An absorbent article characterized in that some of the aforementioned multiple materials are bonded together with a hot melt adhesive that does not contain an insect repellent component.

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