JP7021864B2 - Absorbent article - Google Patents

Description

The present invention relates to an absorbent article.

In recent years, absorbent articles containing an antibacterial agent or a deodorant and further containing a fragrance have been proposed (for example, Patent Documents 1 and 2). In Patent Document 1, the antibacterial substance and the fragrance are not contained in the absorber serving as the liquid storage layer, and the antibacterial substance is arranged closer to the top sheet between the liquid-permeable top sheet and the absorber. Moreover, an absorbent article in which the fragrance is arranged closer to the absorber is disclosed. Further, in Patent Document 2, an antibacterial agent is arranged on a coating sheet covering an absorbent core constituting an absorber, and a fragrance is not contained in the absorber and the absorber is arranged in a compressed portion compressed in the thickness direction. The absorbed article has been disclosed.

Special Table 2010-533051 Gazette Japanese Unexamined Patent Publication No. 2016-067749

However, according to the absorbent article described in Patent Document 1, since the fragrance is arranged closer to the absorber than the antibacterial substance, the fragrance is less likely to volatilize from the top sheet. Further, according to the absorbent article described in Patent Document 2, an antibacterial agent and a fragrance are arranged in the squeezed portion formed on the absorber, and the body fluid is drawn into the squeezed portion, so that the body fluid comes into contact with the fragrance at the same time as the antibacterial agent. Therefore, the effect of the scent of the fragrance is reduced.

Therefore, the present invention is to provide an absorbent article in which the user can feel the scent and deodorizing effect of the fragrance.

The present invention includes a front surface sheet, a back surface sheet, and an absorber arranged between these sheets, and is located between the front area arranged on the front side of the wearer and the rear area arranged on the rear side. An absorbent article comprising a region and having a longitudinal direction extending from the anterior region to the posterior region via the intermediate region and a lateral direction orthogonal to the region, wherein the absorber is a deodorant and an antibacterial agent. It contains at least one of the agents and has a perfume placement area coated with a perfume, and at least one of the deodorant and the antibacterial agent views the absorber in a plan view and substantially covers the entire surface of the absorber. The fragrance arrangement region is arranged, and provides an absorbent article arranged closer to the surface sheet side in the thickness direction of the absorber.

According to the present invention, the scent of the fragrance is easily perceived by the user, and the odor of the body fluid transferred to the absorber can be efficiently suppressed by a deodorant or an antibacterial agent.

FIG. 1 is a plan view schematically showing a skin side surface side (surface sheet side) of a panty liner according to an embodiment of the absorbent article of the present invention. FIG. 2 is a schematic cross-sectional view of the section taken along line II-II of FIG. FIG. 3 is a schematic cross-sectional view showing an absorber included in the panty liner shown in FIG. FIG. 4 is a plan view schematically showing the skin side surface side of the panty liner, which is another embodiment of the absorbent article of the present invention. FIG. 5 is a schematic cross-sectional view of the VV line cross section of FIG.

Hereinafter, the present invention will be described based on the preferred embodiment thereof with reference to the drawings.
As shown in FIG. 1, the panty liner 1 (hereinafter, also referred to as “liner 1”), which is a preferred embodiment of the absorbent article of the present invention, has a surface sheet 2 arranged on the skin side of the wearer, and is worn. A front area 1A arranged on the front side of the wearer and a rear area 1B arranged on the rear side, provided with a back surface sheet 3 arranged on the clothing side of the person and an absorber 4 arranged between the sheets 2 and 3. And an intermediate region 1C located between them, and a vertical direction X extending from the front region 1A to the rear region 1B via the intermediate region 1C and a lateral direction Y orthogonal to the vertical direction X. Here, the intermediate region 1C is a region facing the liquid excretion portion (vaginal opening or the like) of the wearer when worn. The term "when worn" as used herein means a state in which the normal proper wearing position is maintained, and does not include the case where the absorbent article is in a state deviated from the wearing position. As shown in FIG. 2, the liner 1 has a liquid-permeable second sheet 5 between the surface sheet 2 and the absorber 4. In the liner 1, the thickness direction will be described as the Z direction.

The shape of the absorbent article of the present invention in a plan view is not particularly limited, but as shown in FIG. 1, the liner 1 has a center line CL that is long in the vertical direction X and extends in the vertical direction X. It is formed symmetrically. The vertical direction X is also a direction parallel to the center line CL. The liner 1 has a shape in which both side portions along the vertical direction X are confined inward in the horizontal direction Y in the intermediate region 1C (center of the vertical direction X).

In the liner 1, both the surface sheet 2 and the second sheet 5 are formed to contain heat-sealing fibers and are liquid permeable. As shown in FIGS. 1 and 2, in the liner 1, the front surface sheet 2, the second sheet 5, and the back surface sheet 3 each have a larger size than the absorber 4, and extend outward from the peripheral edge of the absorber 4. In those extending portions, the peripheral seal portions 6 are formed by being bonded to each other by known bonding means such as an adhesive, a heat seal, and an ultrasonic seal. The absorber 4 extends from the front region 1A to the rear region 1B, and has a rectangular shape long in the vertical direction X in a plan view. The second sheet 5 and the back surface sheet 3 and the absorber 4 may be bonded by an adhesive. Further, as shown in FIG. 2, in the liner 1, the liner 1 is provided with an adhesive portion 7 for fixing the liner 1 to clothes such as shorts on the clothing side surface of the liner 1 (the clothing side surface of the back sheet 3). The adhesive portion 7 is covered with a release sheet when not in use.

In the present specification, the skin side surface is the surface of the liner 1 and its constituent members (for example, the absorber 4) that is directed toward the wearer's skin side in the wearing state (the side relatively close to the wearer's skin). The clothing side surface is a surface (relatively far from the wearer's skin) of the liner 1 and its constituent members that faces the side opposite to the wearer's skin side in the wearing state.

As shown in FIG. 2, in the liner 1, the second sheet 5 is in contact with the clothing side surface of the surface sheet 2, and the surface sheet 2 and the second sheet 5 are arranged adjacent to each other. In the liner 1, the surface sheet 2 and the second sheet 5 have the same shape and the same dimensions in a plan view.

Examples of the heat-sealing fibers contained in the surface sheet 2 and the second sheet 5 include polyolefin fibers such as polyethylene, polypropylene and polyvinyl alcohol, polyester fibers, polyethylene-polypropylene composite fibers and the like. The form of the composite fiber is not particularly limited, and a core-sheath type, a side-by-side type, or the like can be appropriately selected.

In the liner 1, it is sufficient that the recessed pressing portion 8 extending from the surface sheet 2 to the second sheet 5 is intermittently arranged in at least the intermediate region 1C. In the liner 1, the pressing portion 8 is as shown in FIG. Are intermittently arranged not only in the intermediate region 1C but also over the entire area from the front region 1A to the rear region 1B. In the liner 1, as shown in FIG. 2, the pressing portion 8 does not extend to the absorber 4, and the surface sheet 2 and the second sheet 5 are integrated in the pressing portion 8. The pressing portion 8 is formed by embossing applied from the skin side surface side of the surface sheet 2 toward the second sheet 5. In the liner 1, the embossing for forming the pressing portion 8 may be any one that can melt and pressurize the heat-sealing fibers contained in the surface sheet 2 and the second sheet 5, and for example, heat embossing and ultrasonic embossing. Processing and the like can be mentioned. Since the pressing portion 8 does not extend to the absorber 4 in the liner 1, the pressing portion 8 is different from the leak-proof groove formed by integrally pressing the surface sheet and the absorber.

The shape and dimensions of the pressing portion 8 in a plan view are not particularly limited, but in the liner 1, as shown in FIG. 1, the shapes and dimensions of the plurality of pressing portions 8 in a plan view are the same. Each has a perfect circular shape in a plan view. The plan view shape of the pressing portion 8 may be, for example, an elliptical shape, a polygonal shape, or the like, in addition to the circular shape, and the plan view shapes and dimensions of the plurality of pressing portions 8 are different from each other. May be.

In the liner 1, the position of the pressing portion 8 is not particularly limited as long as it is arranged in the intermediate region 1C, but in the present embodiment, as shown in FIG. It is intermittently arranged in each of the first direction P, which is a direction intersecting both the vertical direction X and the horizontal direction Y, and the second direction Q intersecting the first direction P. Then, a plurality of first discontinuous lines 8P extending in the first direction P formed by intermittently arranging the pressing portions 8 in the first direction P are arranged in parallel with each other at predetermined intervals in the second direction Q. At the same time, a plurality of second discontinuous lines 8Q extending in the second direction Q formed by intermittently arranging the pressing portions 8 in the second direction Q are parallel to each other at predetermined intervals in the first direction P. It is arranged. In the liner 1, the arrangement intervals of the pressing portions 8 and 8 are uniform in each of the first discontinuous line 8P and the second discontinuous line 8Q.

The absorber 4 has at least one of a deodorant and an antibacterial agent and a perfume arrangement region to which a perfume is applied, and the liner 1 has hydrophilic fibers. Typical hydrophilic fibers are cellulosic fibers such as pulp. As the cellulosic fiber, those conventionally used for absorbent articles can be used without particular limitation, and examples thereof include natural cellulose fiber, marcelled cellulose fiber, dissolved cellulose fiber and cellulose fiber derivative. One type can be used alone or two or more types can be used in combination. Further, as the hydrophilic fiber, a hydrophilic synthetic fiber such as polyvinyl alcohol fiber and polyacrylonitrile fiber, and a hydrophobic synthetic fiber such as polyethylene terephthalate fiber, polyethylene fiber, polypropylene fiber and polyester fiber are used as a hydrophilic agent such as a surfactant. It is also possible to use a hydrophilized product. When the absorbent body 4 is an absorbent sheet, its main constituent fibers, that is, constituent fibers having a content of more than 50% by mass with respect to the total mass of the sheet base material are usually hydrophilic fibers.

As the constituent fibers of the absorber 4, fibers other than the hydrophilic fibers may be used, and two or more kinds of fibers may be combined. As the other fiber, a heat-sealing fiber that can be melted by heating and adheres to each other can also be used. Specifically, for example, a polyolefin fiber such as polyethylene, polypropylene and polyvinyl alcohol, a polyester fiber, a polyethylene- Examples thereof include polypropylene composite fibers. The form of the composite fiber is not particularly limited, and a core-sheath type, a side-by-side type, or the like can be appropriately selected.

The deodorant possessed by the absorber 4 is a substance that can directly act on the odor, that is, adsorb, neutralize, decompose, etc., and exhibit a deodorizing effect, and is also used in the art. Although a substance widely used for deodorizing can be used, a porous deodorizing granule is preferable because it has a wide deodorizing spectrum for odor. Examples of the porous deodorant granules include inorganic deodorant granules and organic deodorant granules. The shape of the deodorant granules is not particularly limited, and examples thereof include a spherical shape, a bale shape, and an indefinite shape. The inorganic deodorant granules are deodorant granules mainly composed of an inorganic compound, that is, deodorant granules in which the compound serving as the skeleton of the deodorant granules is an inorganic compound. The organic deodorant granules are deodorant granules mainly composed of organic compounds, that is, deodorant granules in which the compound that forms the skeleton of the deodorant granules is an organic compound.

Preferred inorganic deodorant granules include canclinite-like minerals, zeolites, montmorillonite, activated carbon and the like. Among these, porous deodorant granules having polarity are preferable because they are suitable for deodorizing water-soluble odor-causing substances, and further, canclinite-like minerals and zeolites have a wide deodorizing spectrum. preferable. Since activated carbon belongs to non-polarity, it is effective in deodorizing organic odorous components, and examples thereof include coconut shell charcoal, charcoal, bituminous coal, peat, and lignite. However, it is preferable that activated carbon is not contained from the viewpoint of preventing the organic fragrance component from being adsorbed and deteriorating the odor.

The canclinite-like mineral has a structure similar to that of an aluminosilicate-based compound. The canclinite-like mineral referred to in the present specification is JCPDS (Joint Committee on Powder Diffraction Standards) No. 20-379, 20-743, 25-776, 25-1499, 25-1500, 30-1170, 31-1272, 34-176, 35-479, 35-653, 38-513, 38-514, 38- It has one or more X-ray diffraction patterns selected from the group consisting of 515 and 45-1373. The X-ray diffraction pattern preferably has a main peak at d = 0.365 ± 0.015 nm.

Preferred organic deodorant particles include particles obtained by copolymerizing a monomer component containing a crosslinkable vinyl monomer and a vinyl monomer having a heteroaromatic ring (hereinafter, also referred to as vinyl copolymerized particles).

The crosslinkable vinyl monomer is a monomer having two or more vinyl groups. Examples of the crosslinkable vinyl monomer include divinylbenzene, trivinylbenzene, ethylene glycol di (meth) acrylate and the like, and divinylbenzene is preferable.

The vinyl monomer having a heteroaromatic ring is not particularly limited as long as it is a compound containing a vinyl group and a heteroaromatic ring. The heteroaromatic ring is an aromatic ring made of a cyclic organic compound and contains an oxygen atom, a sulfur atom, a nitrogen atom and the like in addition to a carbon atom as constituent elements. Examples of those containing a nitrogen atom include those having one nitrogen atom in the ring such as pyridine, pyrrole and quinoline, and those having two nitrogen atoms such as imidazole, pyrimidine, pyrazine and pyrazole in the ring. Further, those having a sulfur atom such as thiophene and thiazole in the ring and those having oxygen such as furan in the ring are exemplified. It is considered that the lone electron pair of the heteroatom enhances the adsorption of malodorous substances and is involved in the chemical bond of metal ions. Among these, pyridine, imidazole, and pyrimidine are preferable. Examples of the vinyl monomer having a heteroaromatic ring include 2-vinylpyridine, 4-vinylpyridine, 1-vinylimidazole, 2-vinylpyrimidine and the like, and 2-vinylpyridine and 4-vinylpyridine are preferable.

In the vinyl copolymer particles, in addition to the crosslinkable vinyl monomer and the vinyl monomer having a heteroaromatic ring, other monomers copolymerizable with these can be used as the monomer component. Examples of the other monomer include aromatic vinyl monomers, unsaturated acid esters, unsaturated acids and the like. Examples of the aromatic vinyl monomer include styrene, α-methylstyrene, vinyltoluene, ethylvinylbenzene, vinylbenzyl chloride and the like, and examples of the unsaturated acid ester include methyl (meth) acrylate and ethyl (meth) acrylate. , (Meta) propyl acrylate, (meth) butyl acrylate, 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, glycidyl (meth) acrylate and the like are exemplified and non-existent. Examples of the saturated acid include (meth) acrylic acid. Further, acrylonitrile, methacrylonitrile and the like can also be used. Among these, aromatic vinyl monomers are preferable, and styrene is particularly preferable. In the present specification, (meth) acrylate means acrylate or methacrylate, and (meth) acrylic acid means acrylic acid or methacrylic acid.

Preferred organic deodorant granules include 2,6-diphenyl-p-phenylene oxide-based polymer, divinylbenzene / styrene copolymer, divinylbenzene / 2-vinylpyridine copolymer, and styrene / divinylbenzene / 2-vinylpyridine. Examples thereof include copolymers. Further, as the porous polymer used for the organic deodorant granules, those described in JP-A-2008-62029, JP-A-2008-63711, and JP-A-2010-138344 can be used. Particularly preferable organic deodorant particles are particles obtained by copolymerizing a monomer component containing a crosslinkable vinyl monomer and a vinyl monomer having a heteroaromatic ring (hereinafter, also referred to as vinyl copolymerized particles), similarly to the deodorant particles. ).

The average particle size of the deodorant granules used in the present invention is preferably 0.1 μm or more, more preferably 1 μm or more, and preferably 100 μm or less, still more preferably 50 μm or less. If the average particle size of the deodorant granules is too small, the effect of adsorbing odors is poor, and if the average particle size of the deodorant particles is too large, the absorbent sheet forming the absorber 4 is particularly prepared by the wet papermaking method as described later. In the case of manufacturing, the texture of the manufactured absorbent sheet may deteriorate. Since the deodorant granules are unevenly distributed in the absorbent sheet having a poor texture, there is a concern that the deodorizing function may be deteriorated, and the physical strength of the sheet may be deteriorated. The average particle size of the deodorant granules is measured by the following method.

<Measuring method of average particle size of deodorant granules>
The average particle size of the deodorized particles can be measured according to a conventional method using a laser diffraction / scattering type particle size distribution measuring device (for example, LA-920 manufactured by HORIBA, Ltd.). The measurement conditions are as follows.
-Measurement cell: Flow cell-Particle size standard: Volume-Dispersion medium: Appropriate solvent with good particle dispersibility, such as ethanol / distilled water = 90/10% by mass
・ Dispersion method: stirring, built-in ultrasonic wave 3 minutes ・ Transmittance: 70-90%
-Sample concentration: 0.1%

Further, the peak of the pore size of the deodorant granules used in the present invention is from the viewpoint of the odor adsorption effect and the fragrance component volatilized from the fragrance described later, which is difficult to adsorb, and the fragrance is difficult to be altered or reduced. It is preferably smaller than the size of the component, preferably 0.1 μm or less, more preferably 0.04 μm or less, and preferably 0.005 μm or more. The peak of the pore size of the deodorant granules is measured by the following method.

<Measuring method of peak pore diameter of deodorant granules>
The peak of the pore size of the deodorant granules can be measured by a multi-point method using liquid nitrogen using a pore distribution measuring device (Nippon Bell Co., Ltd., trade name: BELSORP mini II). The peak top in the pore distribution is defined as the peak of the pore diameter. The measurement sample is pretreated by heating at 110 ° C. for 1 hour.
As the antibacterial agent possessed by the absorber 4, as an antibacterial agent capable of exhibiting a deodorizing effect by acting on a source of odor and suppressing the generation of odor, for example, a quaternary ammonium salt compound, a phenolic hydroxyl group such as polyphenol, etc. Examples thereof include compounds having the above, and one of these can be used alone or in combination of two or more. The form of this type of antibacterial agent is not particularly limited, and may be a liquid, powder, or the like.

On the other hand, a preferable type of antibacterial agent that adsorbs an odor or a source of odor is a metal-supported porous deodorant granule (also referred to as an antibacterial granule) that carries an antibacterial metal of a metal or a metal ion. Is. As the porous deodorant granules that support the metal, there are inorganic deodorant granules and organic deodorant granules as in the above-mentioned porous deodorant granules. The shape of the metal-supported porous deodorant granules is not particularly limited, and examples thereof include a spherical shape, a bale shape, and an indefinite shape. In the present invention, any metal-supported porous deodorant granules can be used, and one of these can be used alone or in combination of two or more.

As the metal-supported inorganic deodorant granules preferable in the present invention, since bacteria are easily contacted and the growth of bacteria is easily suppressed, an antibacterial metal composed of a metal or a metal ion is supported on the porous inorganic deodorant granules. It is a metal-supported inorganic deodorant granule. The inorganic deodorant granules that support the metal are preferably those having a polarity that has a good affinity with the water of the excrement liquid, and specific examples thereof include canclinite-like minerals, zeolites, montmorillonite, and the like, and are inorganic. As the antibacterial granules, a canclinite-like mineral (hereinafter, also referred to as a metal-substituted canclinite-like mineral) carrying an antibacterial metal, a zeolite, or the like is preferable. A particularly preferred metal-supported inorganic deodorant granule is a metal-substituted canclinite-like mineral. The metal-substituted canclinite-like mineral is one in which the metal element in the canclinite-like mineral is replaced with a metal element having antibacterial activity. Metal-substituted canclinite-like minerals have a wide deodorizing spectrum and have various malodors such as alkaline odors such as ammonia, amines and pyridines, acidic odors such as lower fatty acids and mercaptans, and neutral odors such as esters, ketones and aldehydes. It has a good deodorizing effect against bad odors. In addition, the particles of the metal-substituted canclinite-like mineral have a tetrapod-like, konpeito-like or sea urchin-like shape, and have the advantage of having extremely good adhesion to fiber materials such as pulp due to the shape. ing.

Examples of the metal having antibacterial activity in the metal-substituted canclinite-like mineral include silver, copper, zinc, zirconium and the like. Preferred metal-substituted canclinite-like minerals include those carrying silver as an antibacterial metal and those carrying zinc as an antibacterial metal described in Japanese Patent No. 3292726 and Japanese Patent No. 4836597 (Mizusawa Chemical Industry Co., Ltd.). Manufactured by Co., Ltd .: The trade name "Mizukanite HP" (main components are silicon dioxide, zinc oxide, aluminum oxide; the supporting metal is zinc; the metal supporting amount is 30% by mass)).

The porous deodorant granules carrying the metal of the present invention are preferable because the organic deodorant granules have a good affinity with organic compounds and have an advantage that contact with bacteria is likely to occur. As the metal-supported organic deodorant granules preferable in the present invention, an antibacterial metal composed of a metal or a metal ion is supported (contained) on the surface of the porous organic deodorant granules from the viewpoint that bacteria easily come into contact with the organic deodorant granules and suppress the growth of the bacteria. ) Is preferably a metal-supported organic deodorant granule. As the organic deodorant granules supporting the metal, the organic deodorant granules listed as the above-mentioned deodorant can be used. Preferred organic deodorant granules include 2,6-diphenyl-p-phenylene oxide-based polymer, divinylbenzene / styrene copolymer, divinylbenzene / 2-vinylpyridine copolymer, and styrene / divinylbenzene / 2-vinylpyridine. Examples thereof include copolymers.

Examples of the metal ions carried (contained) in the porous organic deodorant granules include silver ion, zinc ion, aluminum ion, cobalt ion, zirconium ion, cerium ion, iron ion, copper ion and nickel ion. Examples thereof include platinum ion, and silver ion and zinc ion are preferable. The vinyl copolymer particles can carry metal ions on the surface of their pores by a coordinate bond with a heteroaromatic ring present on the surface layer of the polymer. In this case, malodorous gases such as ammonia, amines, mercaptans, and fatty acids are adsorbed on the vinyl copolymer particles by coordination bonds with metal ions. The metal ion content of the vinyl copolymer particles is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, based on the vinyl copolymer particles. The upper limit of the metal ion content in the vinyl copolymer particles is not particularly limited, but is preferably 10% by mass or less, more preferably 5% by mass or less, based on the vinyl copolymer particles. The metal ion content in the vinyl copolymer particles can be measured using, for example, monochrome excited EDX fluorescent X-rays.

The metal salt used for supporting the metal ion on the organic deodorant granules is not particularly limited as long as it is soluble in water or an organic solvent. Examples of the metal salt include silver nitrate, aluminum nitrate, cobalt nitrate, zirconium nitrate, cerium nitrate, iron (II) nitrate, iron (III) nitrate, copper nitrate, nickel nitrate, silver acetate, cerium chloride and iron chloride (II). ), Iron (III) Chloride, Zinc Chloride, Copper Chloride, Silver Perchlorate, Aluminum Perchlorate, Platinum Perchlorate, Zinc Perchlorate, Zirconium Perchlorate, Silver Sulfate, Aluminum Sulfate, Copper Sulfate, Zinc Sulfate Etc., and these may be used alone or in combination of two or more. Particularly preferred are silver nitrate, silver acetate, and zinc chloride.

At least one of the deodorant and the antibacterial agent is substantially arranged on the entire surface of the absorber 4 in a plan view of the absorber. The content of these deodorant and antibacterial agent is not particularly limited, and can be appropriately set according to the type of deodorant and antibacterial agent, the specification form of the absorbent article, and the like.

In the liner 1, the content of the deodorant in the absorber 4 is preferably 0.1 g / m ² or more, more preferably 0.2 g / m ² or more, and preferably 0.9 g / m in terms of basis weight. m ²
Below, it is more preferably 0.7 g / m ² or less. The content of the antibacterial agent in the absorber 4 is preferably 0.1 g / m ² or more, more preferably 0.2 g / m ² or more, and preferably 1.5 g / m ² or less in terms of basis weight. , More preferably 1.0 g / m ² or less. The content of the deodorant is preferably 0.7% by mass or more, more preferably 0.9% by mass or more, and preferably 7.0% by mass or less, still more preferably, with respect to the total mass of the absorber 4. Is 5.0% by mass or less. The content of the antibacterial agent is preferably 0.7% by mass or more, more preferably 0.9% by mass or more, and preferably 7.0% by mass or less, more preferably 7.0% by mass or less, based on the total mass of the absorber 4. It is preferably 5.0% by mass or less. If the content of the deodorant and antibacterial agent is too low, there is little point in using them, and conversely, if the content is too high, the absorption performance of the absorber deteriorates, and the deodorant cannot be retained in the absorber and falls off. In particular, when the absorbent sheet forming the absorbent body 4 is manufactured by the wet paper making method as described later, there is a risk that the physical strength of the absorbent sheet may decrease.

The absorber 4 of the present invention has at least one of the above-mentioned deodorant and antibacterial agent, and a fragrance-coated region KT. The fragrance that forms the fragrance arrangement region KT may be any fragrance that can volatilize the fragrance component into the atmosphere under atmospheric pressure, and there is no particular limitation on ordinary fragrances that can perceive the fragrance in an environment of normal temperature and pressure. It can be used, and those conventionally used in absorbent articles can be used. As the fragrance, for example, a highly volatile fragrance component having a boiling point of about 250 ° C. or lower, or a medium volatile fragrance component having a boiling point of about 250 to about 300 ° C. is preferably used.

Examples of the highly volatile fragrance component include anisole, benzaldehyde, benzyl acetate, benzyl alcohol, benzyl formate, isobornyl acetate, citronellal, citronellol, citronellyl acetate, paracimen, decanal, dihydrolinalool, dihydromilsenol, and dimethylphenylcarbinol. Eucalyptor, 1-Carvone, Geraniol, Geraniol, Geraniol acetate, Geranilnitrile, Neryl acetate, Nonyl acetate, Linalool, Linalool, Linalool acetate, Phenylethyl alcohol, α-Pinene, β-Pinene, γ-Pinene, α- Examples thereof include yonon, β-yonone, γ-yonone, α-terpineol, β-terpineol, terpinyl acetate, tentalome and the like, and one of these can be used alone or in combination of two or more.

Examples of the above-mentioned medium volatile fragrance components include amilcinnamaldehyde, methyl dihydrojasmonate, isoamyl salicylate, β-cariophyllene, sedren, sedrill methyl ether, katsura alcohol, coumarin, dimethylbenzyl carvinyl acetate, isooigenol, and γ-methylyonone. , Heliotropin, hexyl salicylate, cis-3-hexenyl salicylate, phenylhexanol, pentalide and the like, and one of these can be used alone or in combination of two or more.

In the liner 1, the fragrance contained in the absorber 4 includes, in addition to the above-mentioned highly volatile and medium volatile fragrance components, or in addition to these fragrance components, rose fragrance, lavender fragrance, jasmine fragrance, and Iran Iran. A fragrance composition containing a fragrance having a fragrance tone can also be used. Examples of such a fragrance composition include nerol, lavandulol, jasmar, cyclopiden and the like, and one of these can be used alone or in combination of two or more. The fragrance includes the above-mentioned fragrance material alone, and a combination of fragrance materials composed of multiple fragrances (fragrance composition), such as natural essential oils and compounding bases, diluted and adjusted with a solvent. Is included. For example, as the fragrance, a fragrance composition containing a fragrance having a rose, lavender, jasminum, or Iran-Iran-like fragrance can be used.

The absorber 4 of the absorbent article of the present invention is a core wrap of an absorbent core in which fibers such as pulp fibers are stacked or a mixed fiber in which particles of a water-absorbing polymer are held in the fibers. Although it may be coated with a sheet, the liner 1 is formed of a sheet-shaped absorbent sheet as shown in FIG. The sheet-shaped absorbent sheet may be any as long as it can hold the above-mentioned deodorant or antibacterial agent, and may be, for example, a fiber sheet such as woven fabric, non-woven fabric, knitted fabric, or paper, or a resin film or the like. It may be a composite sheet in which two or more of these are laminated.

In addition to at least one of the above-mentioned deodorant and antibacterial agent and the above-mentioned fragrance, the absorption sheet may further contain other components as long as the gist of the present invention is not deviated. Examples of other components include paper strength reinforcing agents. As the paper strength reinforcing agent, for example, polyamine / epichlorohydrin resin, dialdehyde starch, sponge, carboxymethyl cellulose and the like can be used. These paper strength reinforcing agents may be used alone or in combination of two or more.

In the present invention, at least one of the deodorant and the antibacterial agent is substantially arranged on the entire surface of the absorber 4 in a plan view. Here, "substantially arranged on the entire surface of the absorber 4" means that the deodorant or antibacterial agent is arranged on the entire area of the absorber 4 when the absorber 4 is viewed in a plan view. It means that the ratio of the area is 80% or more. In the liner 1, as described above, the absorber 4 is formed of an absorbent sheet. The absorber 4 (absorbent sheet) used for the liner 1 is a dry sheet manufactured according to the wet papermaking method, a dry sheet manufactured by the airlaid method, a sheet in which a water-absorbing polymer is fixed to an aggregate of hydrophilic fibers and the like. Examples thereof include a sheet formed by spraying a particulate water-absorbent polymer between two non-woven fabrics, and the liner 1 uses a dry sheet manufactured according to a wet papermaking method. Specifically, the absorbent sheet produced according to the known wet papermaking method can be produced, for example, by the production method having the following steps (i) and (ii).
(I) A step of dehydrating a suspension containing the above-mentioned hydrophilic fiber, at least one of the above-mentioned deodorant and antibacterial agent, and water using a papermaking net to form a wet paper containing the deodorant.
(Ii) The step of drying the wet paper or the wet paper.
The steps (i) and (ii) can be carried out according to a conventional method using a known wet paper machine.
In the absorption sheet produced by the production method having the above steps (i) and (ii), at least one of the deodorant and the antibacterial agent is uniformly dispersed in the absorption sheet, and the absorber 4 is viewed in a plan view. It is arranged on the entire surface of the absorber 4.

In the liner 1, the fragrance arrangement region KT of the absorber 4 is formed by applying the fragrance. In the fragrance arrangement region KT, a suspension containing the above-mentioned fragrance was applied to the absorber 4, for example, by using a spray method, a brush coating method, a dipping method, a bar coater, a gravure coater, various roll coaters, or the like. It is formed by coating by a coating method. Further, it is a method of applying or containing a powder in which a fragrance component is encapsulated in a compound such as cyclodextrin, a porous granule carrying a fragrance, a microcapsule containing a fragrance, or the like in the absorber 4. However, it is preferable to apply a suspension containing a fragrance to form the fragrance because it is easy to design the fragrance arrangement position and the like.

The content of the fragrance in the absorber 4 is not particularly limited, and can be appropriately set according to the type of fragrance, the mode of use in the absorbent article, and the like. For example, the content of the fragrance in the absorber 4 is 0.3 mg or more, preferably 0.5 mg or more, and 5.0 mg or less, preferably 3.0 mg or less, per absorbent article (liner 1). .. If the content of the fragrance is too low, it makes little sense to use it, and if it is too high, the fragrance leaks out and affects the adhesive strength of the adhesive, or the fragrance is too strong when stored or used. Therefore, the scent may be transferred to the surroundings or the person may feel uncomfortable.

In the present invention, the fragrance arrangement region KT is arranged closer to the surface sheet 2 side in the thickness direction Z of the absorber 4. Here, the fact that the fragrance arrangement region KT is arranged closer to the surface sheet 2 in the thickness direction Z means that a large amount of fragrance component is present on the skin surface side of the absorber 4, and the fragrance coating region. An absorber without a coated area is layered on the clothing surface side of the KT, or a powder in which a fragrance component is encapsulated in a compound such as cyclodextrin, a porous granule carrying a fragrance, or a fragrance. This is achieved by supporting the microcapsules or the like encapsulating the substance 4 only on the skin surface side of the absorber 4. In the present invention, it is preferable to superimpose the absorber on which the coating area is not formed on the clothing surface side of the fragrance coating area KT for the reason that the design of the fragrance arrangement position and the like is easy.

In the liner 1, as shown in FIGS. 2 and 3, the absorber 4 has a laminated portion 4L in which a plurality of absorbing sheets are laminated. The laminated portion 4L may be formed by stacking a plurality of separate absorbing sheets, but the liner 1 is formed by folding one absorbing sheet. Specifically, one absorption sheet having a rectangular shape in a plan view, which is longer in the horizontal direction Y than the liner 1, is used, and the portion corresponding to the center line CL of the one absorption sheet is along the vertical direction X. The above-mentioned suspension containing the fragrance is applied in a band shape to form the fragrance arrangement region KT. Next, in the one absorption sheet in which the fragrance arrangement region KT is formed, both side portions along the vertical direction X are folded back to the clothing side surface side of the absorption sheet, and the ends of the both side portions are laterally folded by the folding back. A laminated portion 4L composed of three absorbing sheet portions formed by overlapping each other at the central portion of Y (the portion where the center line CL is located) is formed. The folded absorbent sheet having such a laminated structure is used as the absorber 4 in the liner 1. The fragrance arrangement region KT is arranged in the central portion 4C between the side portions 4S and 4S rather than the side portions 4S and 4S along the vertical direction X of the absorber 4 in a plan view and is arranged in the vertical direction X. It is postponed. Here, "both sides 4S, 4S"
Means the portions located at both ends of the intermediate region 1C of the absorber 4 when the portion having the shortest length in the lateral direction Y is divided into three equal parts in the lateral direction Y. The "central portion 4C" means a portion located in the middle of the intermediate region 1C of the absorber 4 when the portion having the shortest length in the lateral direction Y is divided into three equal parts in the lateral direction Y. ..

In the liner 1, as shown in FIGS. 2 and 3, laminated portions 4L composed of three absorbing sheets are arranged in the central portion 4C of the absorber 4 having the fragrance arrangement region KT, and both side portions of the absorber 4. A portion consisting of two absorbent sheets is arranged in each of the 4Ss. Therefore, in the liner 1, the fragrance arrangement region KT is arranged only on the absorption sheet closest to the surface sheet 2 side in the laminated portion 4L composed of three absorption sheets. In the liner 1, the fragrance arrangement region KT is arranged over the entire length of the absorber 4 in the vertical direction X.

The material for forming each part of the liner 1 described above will be described.
As the front surface sheet 2 and the back surface sheet 3, those usually used in absorbent articles such as panty liners and menstrual napkins can be used without particular limitation.
As the surface sheet 2, for example, a liquid-permeable hydrophilic non-woven fabric or a perforated film can be used, and these non-woven fabrics and films are generally thermoplastic resins such as polyethylene and polypropylene and other polyolefin resins and polyethylene terephthalate. It is composed of polyester resin and the like.
As the back sheet 3, for example, a liquid-impermeable film, a liquid-impermeable non-woven fabric, or the like can be used, and the liquid-impermeable film may have moisture permeability.
The second sheet 5 is a constituent member of an absorbent article, which is also called a sub-layer sheet in the present technical field, and improves the permeability of the body fluid from the surface sheet 2 to the absorber 4, and the surface of the body fluid absorbed by the absorber 4. It is a sheet that plays a role of reducing liquid return to the sheet 2. As the second sheet 5, a hydrophilic non-woven fabric or a hydrophilic fiber aggregate can be used, and examples of the non-woven fabric include an air-through nonwoven fabric, a point-bonded nonwoven fabric, a resin-bonded nonwoven fabric, a spunlaced nonwoven fabric, and an air-laid nonwoven fabric.

In the liner 1 of the above-described embodiment of the present invention, as shown in FIGS. 1 and 2, the fragrance arrangement region KT is arranged closer to the surface sheet 2 side in the thickness direction Z of the absorber 4. As described above, since the fragrance arrangement region KT is arranged closer to the surface sheet 2, the fragrance from the surface sheet 2 is highly volatile. Since at least one of the deodorant and the antibacterial agent is substantially arranged on the entire surface of the absorber 4 in a plan view, the odor of the body fluid transferred to the absorber 4 is deodorized. It can be efficiently suppressed with an agent or an antibacterial agent. As described above, the liner 1 has a simple structure in which either one of the deodorant and the antibacterial agent and the fragrance are arranged on the absorber 4, but the deodorant and antibacterial properties are efficiently expressed and the fragrance is used. It is possible to achieve both reliable recognition of the scent of the wearer.

Further, in the liner 1, as shown in FIGS. 1 and 2, the fragrance arrangement region KT is arranged closer to the surface sheet 2 side in the thickness direction Z of the absorber 4, and the absorber 4 is viewed in a plan view. Therefore, the absorber 4 is arranged in the central portion 4C between the side portions 4S and 4S rather than the side portions 4S and 4S along the vertical direction X, and extends in the vertical direction X. Then, at least one of the deodorant and the antibacterial agent is arranged on the entire surface of the absorber 4. Therefore, it is difficult for the fragrance to inhibit the absorption of the body fluid into the absorber, and the fragrance of the fragrance arrangement region KT arranged at a specific position of the absorber 4 and the deodorant arranged in the region other than the fragrance arrangement region KT. It is possible to prevent a decrease in fragrance and a decrease in deodorant or antibacterial property due to the interaction of the agent or antibacterial agent with each other. In particular, in the liner 1, the absorber 4 is formed of an absorbent sheet, and the fragrance arrangement region KT is arranged only on the absorbent sheet closest to the surface sheet 2 side in the laminated portion 4L, so that the above effect is further enhanced. It can be played and the scent of fragrance is easy to maintain.

Further, in the liner 1, as shown in FIGS. 1 and 2, a pressing portion 8 extending from the surface sheet 2 to the second sheet 5 is intermittently arranged in the intermediate region 1C. Therefore, the wearer's body fluid can be quickly absorbed from the surface sheet to the second sheet 5 and quickly transferred to the absorber 4 while being diffused through the recessed pressing portion 8. Therefore, with respect to the body fluid absorbed in the absorber 4, the deodorant performance or the antibacterial performance can be exhibited by using the entire deodorant or antibacterial agent arranged in the absorber 4. In particular, if the pressing portion 8 does not reach the absorber 4, the body fluid that has reached the surface of the absorber 4 is easily diffused over the entire surface of the absorber 4, so that a high deodorizing effect can be easily obtained.

From the viewpoint of ensuring that the above effects are more reliably achieved, the liner 1 preferably has one or more of the following configurations.

The basis weight per absorbent sheet forming the absorber 4 is not particularly limited and may be appropriately set according to the intended use of the absorbent article, but when used for the liner 1, it is preferably 15 g / m ² . Above, more preferably 20 g / m ² or more, preferably 50 g / m ² or less, still more preferably 40 g / m ² or less. The thickness of one absorbent sheet forming the absorber 4 is not particularly limited and may be appropriately set according to the intended use of the absorbent article, but when used for the liner 1, it is preferably 0.05 mm. The above is more preferably 0.1 mm or more, preferably 2.0 mm or less, still more preferably 1.0 mm or less. Unless otherwise specified, the thickness of the absorbent sheet per sheet means the thickness measured by the following method (thickness under a load of 0.5 cN / cm ² (= 0.05 kPa)).

<Measuring method of sheet thickness>
A circular plate weighing 2.5 g and having a radius of 12.5 mm is placed on the measuring table, and the position of the upper surface of the circular plate in that state is set as the reference point P1 for measurement. Next, the circular plate is removed, the measurement target is placed on the measuring table, the circular plate is placed again on the measuring table, and the position of the upper surface of the circular plate in that state is defined as position P2. A laser displacement meter (CCD laser displacement sensor LK-080 manufactured by KEYENCE CORPORATION) is used as the measuring device. The difference between the reference point P1 and the position P2 is defined as the thickness of the object to be measured, that is, the thickness of the absorber under a pressure of 0.5 cN / cm ² (= 0.05 kPa).

Although the present invention has been described above based on the embodiment thereof, the present invention can be appropriately modified without being limited to the above embodiment.
For example, in the above-mentioned liner 1, the absorber 4 is formed of a sheet-shaped absorbent sheet as shown in FIG. 2, but the absorber 4 is made of pulp fiber or the like as shown in FIGS. 4 and 5. The absorbent core 41 in which hydrophilic fibers are stacked or the absorbent core 41 which is a mixed fiber in which particles of a water-absorbing polymer are held in the fibers may be coated with a core wrap sheet 42. In the case of the absorber 4 as shown in FIGS. 4 and 5, in order to arrange the fragrance arrangement region KT closer to the surface sheet 2 side of the absorber 4, the suspension containing the above-mentioned fragrance is placed in one core. A coating method using, for example, a spray method, a brush coating method, a dipping method, a bar coater, a gravure coater, various roll coaters, etc. along the vertical direction X in the portion of the wrap sheet 42 corresponding to the center line CL. The core wrap sheet 42 forming the fragrance arrangement region KT is applied to cover the absorbent core 41 which is a fiber stack, and both sides of the sheet along the vertical direction X are the absorbent. The core 41 may be folded back toward the side surface of the clothing, and the ends of both side portions may be overlapped with each other at the central portion in the lateral direction by the folding back. Alternatively, the absorbent core 41 is applied from the skin side surface side of the absorbent core 41 along the portion corresponding to the center line CL by the above coating method to form a fragrance arrangement region KT, and the absorbent core 41 having the fragrance arrangement region KT formed is core-wrapped. It may be covered with the sheet 42. As shown in FIGS. 4 and 5, the liner 1 can have the same effect as the liner 1 shown in FIGS. 1 and 2 described above.

Further, from the viewpoint of improving absorbency and leak-proof property, a leak-proof groove (round emboss) is formed on the skin side surface of the liner 1 in which the surface sheet 2, the second sheet 5 and the absorber 4 are integrally compacted. It may be formed.
Further, as shown in FIG. 2, the liner 1 has a second sheet 5 between the surface sheet 2 and the absorber 4, but may not have the second sheet 5.

The absorbent article of the present invention is not limited to the panty liner as in the above embodiment, and broadly includes articles used for absorbing body fluid (urine, loose stool, menstrual blood, sweat, etc.) discharged from the human body, and is used for menstruation. It also includes napkins, menstrual shorts, deployable disposable diapers, pants-type disposable diapers and the like.

Further, the following additional notes are disclosed with respect to the above-described embodiment of the present invention.

<1> A front area arranged on the front side of the wearer, a rear area arranged on the rear side, and an intermediate area located between them, including a front surface sheet, a back surface sheet, and an absorber arranged between these sheets. An absorbent article having a longitudinal direction extending from the anterior region to the posterior region via the intermediate region and a lateral direction orthogonal to the longitudinal direction, wherein the absorber is a deodorant and an antibacterial agent. At least one of the deodorant and the antibacterial agent is arranged on substantially the entire surface of the absorber with a plan view of the absorber. The fragrance arrangement region is an absorbent article that is arranged closer to the surface sheet side in the thickness direction of the absorber.
<2> The fragrance arrangement region is arranged in the central portion between both side portions and extends in the vertical direction rather than each of the side portions along the vertical direction of the absorber in a plan view of the absorber. The absorbent article according to <1>.
<3> The absorber has a laminated portion in which a plurality of absorbent sheets are laminated, and the fragrance arrangement region is arranged on the absorbent sheet closest to the surface sheet in the laminated portion. <1 > Or the absorbent article according to <2>.
<4> The absorbent article according to <3>, wherein the laminated portion is formed by folding one absorbent sheet.
<5> A liquid-permeable second sheet is provided between the surface sheet and the absorber, and a recessed pressing portion extending from the surface sheet to the second sheet is intermittently arranged in the intermediate region. The absorbent article according to any one of <1> to <4>.
<6> The absorbent article according to any one of <1> to <5>, wherein the deodorant is a porous deodorant granule.
<7> The absorbent article according to <6>, which contains an inorganic deodorant granule as the porous deodorant granule.
<8> The absorbent article according to <7>, wherein the inorganic deodorant granules are a canclinite-like mineral or zeolite.
<9> The absorbent article according to any one of <1> to <7>, which does not contain activated carbon.
<10> The absorbent article according to any one of <6> to <8>, which contains organic deodorant granules as the deodorant.
<11> The absorbent article according to <10>, wherein the organic deodorant particles include particles obtained by copolymerizing a monomer component containing a crosslinkable vinyl monomer and a vinyl monomer having a heteroaromatic ring.
<12> The absorbent article according to any one of <6> to <10>, wherein the average particle size of the deodorant granules is 0.1 μm or more and 100 μm or less, preferably 1 μm or more and 50 μm or less.
<13> The peak of the pore diameter of the porous deodorant granules is 0.005 μm or more, 0.1 μm or less, preferably 0.04 μm or less, according to any one of <6> to <11>. Absorbent article.
<14> The absorbent article according to any one of <1> to <13>, which comprises a quaternary ammonium salt compound or a compound having a phenolic hydroxyl group as the antibacterial agent.
<15> The absorbability according to any one of <1> to <14>, wherein the antibacterial agent includes an antibacterial granule in which the porous deodorant granule carries an antibacterial metal composed of a metal or a metal ion. Goods.
<16> The absorbent article according to <15>, which contains an inorganic deodorant granule as a porous deodorant granule carrying the antibacterial metal.
<17> The absorbent article according to <16>, wherein the inorganic deodorant granules are a canclinite-like mineral or zeolite.
<18> The absorbent article according to any one of <15> to <17>, wherein the antibacterial metal is silver, copper, zinc or zirconium.
<19> The absorbent article according to any one of <15> to <18>, which contains an organic deodorant granule as a porous deodorant granule carrying the antibacterial metal.
<20> The organic deodorant granules are 2,6-diphenyl-p-phenylene oxide-based polymer, divinylbenzene / styrene copolymer, divinylbenzene / 2-vinylpyridine copolymer, styrene / divinylbenzene / 2-. The absorbent article according to <19>, which is a vinylpyridine copolymer.
<21> The metal ion as the antibacterial metal is silver ion, zinc ion, aluminum ion, cobalt ion, zirconium ion, cerium ion, iron ion, copper ion, nickel ion or platinum ion, preferably silver. An absorbent article of <19> or <20> which is an ion or a zinc ion.
<22> The content of the fragrance in the absorber is 0.3 mg or more, preferably 0.5 mg or more, and 5.0 mg or less, preferably 3.0 mg or less per absorbent article. <1> ~ The absorbent article according to any one of <21>.
<23> The absorber is formed of an absorbent sheet, and the basis weight per absorbent sheet is 15 g / m ² or more, preferably 20 g / m ² or more, and 50 g / m ² or less, preferably 40.
The absorbent article according to any one of <1> to <22>, which is g / m ² or less.
<24> The absorbent article according to <23>, wherein the thickness per absorbent sheet is 0.05 mm or more, preferably 0.1 mm or more, and 2.0 mm or less, preferably 1.0 mm or less.
<25> The absorbent article according to any one of <1> to <24>, wherein the absorbent article is a panty liner.

1 Panty liner (absorbent article)
2 Front sheet 3 Back sheet 4 Absorber (absorbent sheet)
5 Second sheet 6 Peripheral seal part 7 Adhesive part 8 Pressing part 1A Front area 1B Rear area 1C Intermediate area KT Perfume placement area X Vertical direction Y Horizontal direction

Claims (5)

It includes a front sheet, a back sheet, and an absorber arranged between these sheets, and includes an anterior region arranged on the front side of the wearer and a rear region arranged on the rear side, and an intermediate region located between them. An absorbent article having a longitudinal direction extending from the anterior region to the posterior region via the intermediate region and a lateral direction orthogonal to the longitudinal direction.
The absorber contains at least one of a deodorant and an antibacterial agent and has a perfume placement region coated with a perfume.
The absorber has a laminated portion in which a plurality of absorbent sheets are laminated, and has a laminated portion.
At least one of the deodorant and the antibacterial agent is substantially arranged on the entire surface of the absorber with a plan view of the absorber.
The fragrance arrangement region is arranged on the absorption sheet closest to the surface sheet side in the laminated portion in the thickness direction of the absorber.
The fragrance arrangement region includes a center line extending in the vertical direction between the bilateral portions of the absorber rather than each of the bilateral portions along the vertical direction of the absorbent body in a plan view. It is located in the center and extends vertically,
The absorbent article has a liquid permeable second sheet between the surface sheet and the absorbent body.
An absorbent article in which recessed pressing portions extending from the surface sheet to the second sheet are intermittently arranged in the intermediate region. The absorbent article according to claim 1, wherein the laminated portion is formed by folding one absorbent sheet. The absorbent article according to claim 1 or 2, wherein the pressing portion is arranged over the entire area from the front region to the rear region. The absorbent article according to any one of claims 1 to 3, wherein the pressing portion does not extend to the absorber. The absorbent article according to any one of claims 1 to 4, wherein the absorber comprises only the laminated portion.

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