WO2016056257A1

WO2016056257A1 - Absorbent article

Info

Publication number: WO2016056257A1
Application number: PCT/JP2015/053832
Authority: WO
Inventors: 藤本　和也; 中嶋　海陽
Original assignee: ユニ・チャーム株式会社
Priority date: 2014-10-10
Filing date: 2015-02-12
Publication date: 2016-04-14
Also published as: TW201628579A; AU2015249159C1; AU2015249159B1; JP2016077857A; TWI701022B; CN106794084B; CN106794084A; JP5769896B1

Abstract

The present invention provides an absorbent article that can sufficiently and efficiently exhibit the deodorizing function of cyclodextrin and the active ingredient controlled-release function of cyclodextrin complexes. This absorbent article (1) includes a liquid-permeable layer (2), a liquid-impermeable layer (3), an absorption layer (SA) that is positioned between the abovementioned layers, and a cyclodextrin-containing layer that is positioned between the absorption layer (SA) and the liquid-impermeable layer (3).

Description

Absorbent articles

The present invention relates to an absorbent article provided with an odor control function.

Absorbent articles such as light incontinence pads, sanitary napkins and disposable diapers are used to absorb and retain body fluids such as urine and menstrual blood discharged from the wearer. Since the body fluid absorbed by the absorbent body of the absorbent article usually gives off an unpleasant odor, an absorbent article capable of suppressing the odor due to such body fluid has been considered.

As such an absorbent article, Patent Document 1 discloses a cyclodextrin and a cyclodextrin complex containing at least three components complexed with the cyclodextrin in a layer closer to the body-facing surface than the absorption core. An absorbent article disposed is disclosed.

JP-A-2013-455587

However, since the body fluid such as urine excreted from the wearer immediately passes through the layer (for example, a surface sheet etc.) close to the body-facing surface of the absorbent article, the absorption disclosed in Patent Document 1 When the cyclodextrin and the cyclodextrin complex are disposed in a layer close to the body-facing surface of the absorbent article, as in the case of a porous article, the contact time of the cyclodextrin and the cyclodextrin complex with the body fluid is sufficient. There is a risk that the deodorizing function of cyclodextrin and the controlled release function of the active ingredient of cyclodextrin complex may not be sufficiently exhibited.

Then, an object of the present invention is to provide an absorptive article which can make the deodorizing function which cyclodextrin has, and the sustained release function of the active ingredient which a cyclodextrin complex has efficiently, and fully exhibit.

The absorbent article of the present invention comprises a liquid permeable layer, a liquid impermeable layer, an absorbent layer located between these two layers, and a cyclodextrin-containing layer located between the absorbent layer and the liquid impermeable layer. including.

According to the absorbent article of the present invention, since the cyclodextrin-containing layer is located between the absorbing layer and the liquid impermeable layer, body fluid such as urine discharged from the wearer passes through the liquid permeable layer When absorbed in the absorbent layer, the body fluid is accumulated in the lower part of the absorbent layer (that is, the part on the cyclodextrin-containing layer side) by the action of gravity, and the accumulated body fluid is contained in the cyclodextrin At least one of the cyclodextrin and the cyclodextrin complex contained in the layer can be brought into contact with a large contact area for a long time. As a result, the deodorizing function of cyclodextrin and the sustained release function of the active ingredient (eg, the flavor and the deodorant component retained in cyclodextrin) of the cyclodextrin complex can be efficiently exhibited sufficiently. In the absorbent article of the present invention, the “cyclodextrin-containing layer” means a layer containing at least one of cyclodextrin and a cyclodextrin complex described later.

ADVANTAGE OF THE INVENTION According to this invention, the absorbent article which can fully exhibit the function which cyclodextrin has efficiently can be provided.

FIG. 1 is a plan view of the light incontinence pad according to the first embodiment or the second embodiment of the present invention as viewed in the thickness direction from the top sheet side in a developed state. FIG. 2 is an end view of a cross section along line II-II 'of FIG. 1 in the light incontinence pad of the first embodiment of the present invention. FIG. 3 is a plan view for explaining a body fluid absorption area, a cyclodextrin arrangement area, an adhesive application area and a perfume application area in the light incontinence pad of FIG. FIG. 4 is an end view of a cross section along line II-II 'of FIG. 1 in the light incontinence pad of the second embodiment of the present invention.

Hereinafter, preferred embodiments of the absorbent article of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the thickness from the surface sheet (liquid permeable layer) side (that is, the side opposite to the skin of the wearer) in a developed state of the light incontinence pad 1 according to the first embodiment or the second embodiment of the present invention. FIG. 2 is a plan view seen in a direction _DT , and FIG. 2 is an end view of a cross section along line II-II ′ in the light incontinence pad 1 of FIG. 1 in the light incontinence pad of the first embodiment of the present invention; FIG. 3 is a plan view for explaining a body fluid absorption area, a cyclodextrin arrangement area, an adhesive application area and a perfume application area in the light incontinence pad of FIG. In the present specification, unless otherwise noted, “looking in the thickness direction from the liquid-permeable layer side in the developed state” is simply referred to as “plan view”.

As shown in FIGS. 1 and 3, light incontinence pad 1 of the first embodiment of the present invention, in plan view, rectangular with short sides extending in the long side in the width direction D _W extending in the longitudinal direction D _L Both longitudinal end edges have an arc-shaped bulging shape. The shape of the absorbent article in the present invention is not limited to such a shape, as long as the longer length shape than the width dimension of the longitudinal direction D _L of the length dimension in the width direction D _W, any It can be vertically elongated (e.g., rectangular, oval, wedge, etc.).

In the present specification, the direction toward the central axis C _L extending in the longitudinal direction D _L of the longitudinally long absorbent article is referred to as the inward direction in the width direction, and the direction away from the central axis C _L is It is called the outward direction in the width direction. Similarly, the direction toward the central axis C _W extending in the width direction D _W of the absorbent article, referred to the direction of the inner side in the longitudinal direction, the direction of the outer side away from the central axis C _W in the longitudinal direction It is said. Furthermore, in the thickness direction _DT of the absorbent article, the direction toward the side (skin facing surface side) facing the wearer's skin surface is referred to as the skin facing surface side, which faces the wearer's skin surface. The direction toward the opposite side (non-skin facing surface side) to the side is referred to as the non-skin facing surface direction.

The absorbent article of the present invention, as shown in FIG. 3, extends from the central axis C _L extending in the longitudinal direction D _L of the absorbent article across the width direction D _W in plan view, and a body fluid absorbent region T _a extending across the central axis C _W extending in the width direction D _W in the longitudinal direction D _L, has an area other than the body fluid absorbing region. Here, the “body fluid absorption region” refers to a region corresponding to the body fluid excretion position of the wearer when the wearer wears the absorbent article, and the type of the absorbent article, specifically, from the wearer For each type of absorbent article according to the type of excreted urine or stool, type of body fluid such as menstrual blood, age or gender of the wearer, position or area where the wearer's excretion opening abuts, structure of the absorbent layer, etc. It is an area set appropriately. Incidentally, the body fluid absorbent region T _A is generally a longitudinal length of about 1/3 or more of the total length of the longitudinal direction D _L of the absorbent article, about 1/3 or more of the total length of the width direction D _W of the absorbent article Have a length in the width direction of In addition, “a region other than the body fluid absorption region” refers to a region other than the body fluid absorption region extending in the longitudinal direction and the outward direction in the width direction from the body fluid absorption region It includes an area which does not absorb the excreted body fluid and an area which is not an area corresponding to the wearer's body fluid excretion position but which can absorb the body fluid excreted from the wearer.

The light incontinence pad 1 according to the first embodiment of the present invention, as shown in FIG. 2, is located on the side of the wearer's skin facing surface in the thickness direction _DT , and may be any liquid permeable non-woven fabric or plastic film. A liquid-permeable sheet comprising the liquid-permeable sheet and the liquid-permeable sheet, and an optional liquid-impermeable sheet such as a liquid-impermeable non-woven fabric or a plastic film positioned on the non-skin-facing side of the wearer , A back sheet 3 as a liquid impermeable layer, and an absorbent material located between the top sheet 2 and the back sheet 3 and containing at least an absorbent polymer 6; (e.g., air-through nonwoven fabric, etc.) is sandwiched by the absorbent sheet S _a as absorbing layer, positioned between the absorbent sheet S _a and the back sheet 3, and cyclodextrins and the absorbent polymer and the liquid retaining property object A cyclodextrin-containing layer in which a cyclodextrin-containing absorbent layer 4 containing a mixture of qualities (for example, pulp and the like) is sandwiched by two

carrier sheets

5, 5 composed of liquid-permeable sheets (for example, tissue and the like); The laminate from the top sheet to the back sheet is folded so as to sandwich the laminate from both outer sides in the width direction and joined to the laminate, and the inward edge in the width direction is a gather portion The pair of side gather sheets 8, 8 'extending in the longitudinal direction and the pair of side gather sheets 8, 8' located near the fold of the pair of side gather sheets 8, 8 ', which are free ends so as to form It is comprised by the various members containing the linear elastic members 9 and 9 'arrange | positioned 2 each at each of a sheet | seat.

In the present embodiment, the absorbent sheet S _A (absorbent layer) is not particularly limited as long as it has a function of absorbing and retaining body fluid such as urine discharged from the wearer, but preferably it is as described above. What sandwiches the absorptive material containing at least absorptive polymer 6 with liquid permeable sheets, such as two sheets of air through nonwoven fabrics, is used. Here, the “absorbent polymer” is a polymer capable of absorbing and holding water, and examples thereof include a polymer having a three-dimensional network structure in which a water-soluble polymer is appropriately crosslinked. Specific examples thereof include starch-based, acrylic acid-based, and amino acid-based particulate or fibrous polymers. Such an absorbent polymer absorbs not only water but also an odor comprising an ammonia component and the like, and therefore can exhibit a deodorizing effect.

In addition, as the absorbent polymer, a deodorant component-containing absorbent polymer in which absorbent polymer particles and an optional deodorant component are integrated can be suitably used. In addition, the deodorizing component means a component capable of eliminating the odor resulting from the odor component by adsorbing the odor component such as ammonia or dimethylamine. As such a deodorizing component, for example, activated carbon; alumina; zeolite; cyclodextrin; zeolite substituted with a bactericidal metal cation such as silver or copper, or quaternary ammonium having a bactericidal action on the surface such as activated carbon or alumina A bactericidal deodorizing component such as a complex to which a salt compound is attached; or a combination of two or more of these deodorizing components.
In addition, when urea contained in urine is decomposed by an enzyme called urease possessed by bacteria in urine, an ammonia component is generated and an ammonia odor is generated, but the above-mentioned bactericidal deodorant component is generated in the urine. Since it acts as a bactericidal agent against bacteria, it is an advantageous deodorizing component in that the decomposition of urea by the above-mentioned urease can be suppressed to prevent the generation of an ammonia odor. In addition, the effect of preventing the generation of such an ammonia odor can be obtained also when using a bactericidal agent having the same bactericidal action as the bactericidal deodorizing component, for example, such a bactericidal agent A bactericide-containing absorbable polymer in which the absorbable polymer particles and the bactericidal agent are integrated, which is obtained by spraying an aqueous solution containing the above with respect to the absorbable polymer particles, can also be suitably used in the present invention. .

The deodorant component-containing absorbent polymer can be obtained by mixing and integrating absorbent polymer particles and the above deodorant component. Further, the deodorant component-containing absorbent polymer is mixed with water to be added to the absorbent polymer particles to form a water-containing gel, and then the absorbent polymer in the state of the water-containing gel and the above-mentioned deodorant component are mixed and integrated. It can also be obtained by

In the present invention, the absorbent material that can be used for the absorbent sheet S _A (absorbent layer) is not particularly limited as long as it contains the above-mentioned absorbent polymer, and in addition to the absorbent polymer, pulp and the like It is also possible to include a liquid-retaining substance consisting of water-absorbent fibers and the like. When the absorbent material includes the absorbent polymer and the water absorbent fiber, the content of the absorbent polymer is in the range of 10 to 90% of the mass of the water absorbent fiber per unit area of the absorbent layer. In the present invention, from the viewpoint of efficiently contacting the body fluid such as urine discharged from the wearer with the cyclodextrin in the cyclodextrin-containing absorbent layer located on the non-skin facing surface side of the absorbent sheet. Preferably, the absorbent material does not contain a liquid retaining substance such as pulp.

The liquid-permeable sheet that can be used for the absorbent sheet S _A (absorbent layer) is not particularly limited as long as it is a sheet having liquid permeability, and for example, an air through nonwoven fabric, a spunbond, and a laminated nonwoven fabric (for example, , Non-woven fabrics such as SBS non-wovens, tissues, etc. can be used. From the viewpoint of liquid permeability, the liquid-permeable sheet is preferably an air through non-woven fabric.

In light incontinence pad 1 of this embodiment, the absorbent sheet S _A is the absorbent polymer 6 described above (absorbent material), the two sheets of coating the adhesive G liquid-permeable sheet 7, 7 'of Between the two liquid-permeable sheets 7, 7 'in the central area in the width direction _DW , and the area (absorbent polymer arrangement area 11) in which the absorbent polymer is arranged and the width direction D After sandwiching the absorbent polymer between the two liquid-permeable sheets 7 and 7 'so that the absorbent polymer is not present in the regions adjacent to both sides of _W, the two liquid-permeable sheets 7, the width direction D _W the absorbent polymer across edge is not disposed in the region of 7 '(the absorbent polymer blank region 12), the width direction D along fold line each extending in the longitudinal direction D _L folding the inner side of the _W (so-called, Gakumaki To) can be prepared by. When the absorbent polymer non-arranged area 12 on both end sides in the width direction of the two liquid permeable sheets 7 and 7 'is folded inward in the width direction, the skin facing surface side or the non-skin facing side It may be folded in any direction on the surface side. By folding the absorbent polymer non-arrangement regions of the two liquid permeable sheets sandwiching the absorbent polymer in this manner, the absorbent polymer is less likely to leak from the absorbent sheet, and the absorbent sheet Since the folded part (folded part) of the present invention has high rigidity by the laminated structure of four layers, the width direction _DW of the absorbent article is caused by the movement of the foot of the wearer when wearing the absorbent article. Even if a force is applied from the side, the absorbent sheet becomes difficult to deform. As a result, the absorption area of body fluid such as urine discharged from the wearer can be secured, and good absorbent performance can be maintained as an absorbent article.

In the absorbent article of the present invention, the absorbent sheet (absorbent layer) is not limited to the above-mentioned embodiment, and for example, the absorbent material may be sandwiched between one liquid permeable sheet by folding it. Alternatively, after being held in the central area in the width direction and / or the longitudinal direction of the liquid-permeable sheet so as to be surrounded by three or more liquid-permeable sheets, the area adjacent to the central area, Folding the area (absorptive material non-arranged area) in which the absorbent material is not disposed along the longitudinal direction and / or the folding direction extending in the longitudinal direction to the lateral direction and / or the longitudinal inward direction It may be produced by

Since the absorbent sheet thus produced is on the lower side (non-skin facing surface side) of the surface sheet which is a liquid permeable sheet, when body fluid such as urine discharged from the wearer passes through the surface sheet Immediately, the absorbent polymer in the absorbent sheet absorbs odor with body fluid such as urine. At this time, the absorbent polymer swells to increase the thickness of the absorbent sheet, and therefore, even when the absorbent article is subjected to body pressure due to the weight of the wearer etc., the swollen absorbent polymer acts as a pressure buffer. Acting like a layer, it is difficult for the body fluid absorbed by the absorbent polymer to return to the surface sheet (liquid permeable layer). Further, since the body fluid passes through the absorbent sheet by the action of gravity, it sufficiently secures an opportunity to contact with cyclodextrin in the cyclodextrin-containing absorbent layer located on the non-skin facing surface side of the absorbent sheet. be able to. In addition, when the body fluid stays in the absorbent sheet for a long time, the body fluid diffuses over a wide area in the surface direction of the absorbent sheet, so that the body fluid is contacted with the cyclodextrin from a wider area. It can be done. As a result, the deodorizing function of the cyclodextrin in the cyclodextrin-containing absorbent layer and the controlled release function of the active ingredient of the cyclodextrin complex can be more efficiently exhibited.

Further, as shown in FIGS. 2 and 3, light incontinence pad 1 of the present embodiment, in the folded portion of the both end edge in the width direction D _W of the absorbent sheet S _A, the two liquid-permeable A liquid perfume is applied to each or any one of the areas (the perfume coated areas T _F and T ′ _F ) extending in the longitudinal direction D _L sandwiched by the

sheets

7 and 7 ′. By applying a liquid perfume to such a position, the liquid perfume comes into contact with the hot melt adhesive for fixing the absorbent sheet in the light incontinence pad 1 or the absorbent polymer. Since the adhesive property of the adhesive and the absorption performance of the absorbent polymer do not decrease, the liquid perfume can exhibit the aroma effect. Furthermore, the liquid perfume is coated at a position away from the cyclodextrin in the cyclodextrin-containing layer, so that the liquid perfume is not easily adsorbed to the non-inclusion cyclodextrin, and the aroma action of the liquid perfume is steady Can be The liquid perfume used in the absorbent article of the present invention is not particularly limited, and any conventionally known liquid perfume such as natural perfume and synthetic perfume can be used, but the absorbent article is applied to the human body. It is preferable to use a plant-derived natural flavor, considering that it is

In the absorbent article of the present invention, the position at which the absorbent sheet (absorbent layer) is disposed is not particularly limited as long as it is between the surface sheet and the cyclodextrin-containing layer, for example, non-skin of cyclodextrin-containing layer Another absorbent sheet can also be arranged at the position on the opposite surface side.

As shown in FIG. 2, light incontinence pad 1 of this embodiment is the same as the absorbent polymer area of the absorbent sheet S _A, a liquid-permeable sheet 7 located on the skin facing side of the absorbent polymer, absorbent An adhesive G for fixing the absorbent polymer is intermittently applied to each of the liquid-permeable sheets 7 ′ located on the non-skin facing surface side of the polymer 6. The application form of the adhesive G is not particularly limited as long as the adhesive G is applied intermittently, and, for example, the adhesive G extends in the longitudinal direction of the liquid-permeable sheets 7 and 7 'and in the width direction Even in the form of a plurality of lines arranged in a row, or in the form of a plurality of lines extending in the width direction of the liquid-permeable sheets 7 and 7 'and arranged in a longitudinal direction, or a plurality of dots It may be in the form of In addition, the adhesive agent G is not specifically limited, For example, a hot-melt-type adhesive agent etc. can be used.
In absorbent polymer region of the absorbent sheet S _A, the adhesive G is thus intermittently applied, bodily fluids such as urine discharged from the wearer's light incontinence pad 1, the liquid-permeable through a portion of adhesive G of the sheet 7 is not coated, it is absorbed into the absorbent polymer 6 which is fixed to the absorbent sheet in the S _a, thereby inhibiting the absorption of the absorbent sheet S _a without, it is possible to suppress the movement of the absorbent polymer 6 in the absorbent sheet in the S _a.

Moreover, as shown in FIG. 2, the adhesive G in the light incontinence pad 1 of this embodiment is the position of the adhesive G applied to the liquid-permeable sheet 7 located on the skin-facing surface side of the absorbent polymer 6 And the position of the adhesive G applied to the liquid-permeable sheet 7 'positioned on the non-skin-facing surface side of the absorbent polymer 6 do not overlap each other in the thickness direction _DT , the liquid-permeable sheet It is applied to each of 7 and 7 '. When the adhesive G is applied in this manner, a gap is less likely to be formed between the liquid-permeable sheet 7 and the liquid-permeable sheet 7 ′, and therefore an odor caused by holding a body fluid such as urine in the gap Can be reduced. Furthermore, the absorbent sheet S bodily fluids such as urine which is not absorbed by the absorbent polymer 6 in _A is the liquid-permeable sheet 7 the absorbent sheet S glue G passes through the portion that is not coated of ' _Since it can flow out to the non-skin-contacting surface side of _A , the body fluid having flowed out the absorbent sheet SA can be absorbed by the cyclodextrin-containing layer described later together with the odor caused by the body fluid.

Absorbent sheet S _A in light incontinence pad 1 of this embodiment, for example, on the surface (upper surface) skin-facing surface side of the liquid-permeable sheet 7 ', except for the area where compressed groove 14 to be described later is formed After the adhesive G is applied intermittently and the absorbent polymer is disposed in the area where the adhesive G is applied intermittently, the surface from the non-skin facing surface side (the lower surface) It can be obtained by covering the liquid-permeable sheet 7 on which the adhesive G is applied intermittently and joining them, and finally folding the above-mentioned absorbent polymer non-placement area 12.
Thus absorbent sheet S _A thus obtained is in a plan view, in the region where the compressed groove 14 is formed of the liquid-permeable sheet 7 ', the adhesive for fixing the absorbent polymer 6 since agent G is not coated, the absorbent sheet S _a, the absorbent polymer 6 has an absorbent polymer-existing region 13 does not exist locally in the absorbent polymer region 11 . The range of the absorbent polymer non-existing region 13 can be set appropriately according to the form of the compressed groove 14 to be formed, but a predetermined dimension (for example, 2 to 5 mm) outward from the peripheral edge of the compressed groove. It is preferable to set so as to extend to.

Then, light incontinence pad 1 of this embodiment has a compressed groove 14 extending to the inside of at least the absorbent sheet S _A from the skin-facing surface of the topsheet 2, the compressed groove 14, in a plan view The absorbent polymer absent region 13 is formed. The squeezed groove 14 has a top sheet 2 (liquid permeable layer), an absorbent sheet S _A (absorbent layer), a cyclodextrin-containing layer, and a back sheet (liquid impervious layer) superimposed on each other, as viewed in plan. It can form by giving a heat embossing from the skin opposing surface side of the said surface sheet 2 in the said absorptive polymer non-existence area | region 13. As shown in FIG. In the lower portion (non-skin facing surface side portion) of the bottom of the pressing groove 14, a high density portion 15 having a fiber density higher than that of the surroundings is formed by pressing.
The squeezed groove is formed in the region where the absorbent polymer is absent, so that it is possible to prevent breakage of the top sheet due to the presence of the absorbent polymer at the time of squeezing. Further, since a high density portion having a fiber density higher than that of the periphery is formed in the lower portion of the bottom portion of the pressing groove, body fluid such as urine which has flowed into the pressing groove is caused by capillary action of the high density portion. Absorption of the body fluid in the cyclodextrin-containing layer located on the lower side (non-skin facing surface side) of the absorbent sheet S _A (absorbent layer). And adsorption of odor caused by the body fluid can be performed efficiently.
The compressed groove is formed to extend from the skin-facing surface of the surface sheet 2 to the inside of the cyclodextrin-containing layer described later, or to the carrier sheet 5 'located on the back sheet side of the cyclodextrin-containing layer. May be When the compressed groove is formed in this manner, body fluid such as urine excreted from the wearer can be transferred to the cyclodextrin-containing layer more quickly, and gaps and twists occur between the layers constituting the absorbent article. It becomes difficult.
In addition to the above-mentioned compressed groove, unevenness due to embossing or the like may be imparted to the surface sheet (liquid permeable layer). When the surface sheet is provided with such irregularities, the contact area between the wearer's skin and the discharged body fluid can be reduced, so that skin rash and the like hardly occur.

In the light incontinence pad 1 of the present embodiment, the cyclodextrin-containing layer is the carrier sheet in which at least a portion of the cyclodextrin in the cyclodextrin-containing absorbent layer 4 is located on the non-skin facing surface side of the cyclodextrin. 5 'joined to (cyclodextrin holding sheet), and comprises a hot-melt adhesive to the longitudinal direction D continuously or intermittently extend along the _L light incontinence pad 1 (absorbent article), and further, the cyclodextrin-containing layer, in a plan view, a longitudinal D _L and the width direction D _W extending to the adhesive coated area T _H of the light incontinence pad 1, a region where the cyclodextrin is placed , anda cyclodextrin arrangement area T _C extending in the longitudinal direction D _L and the width direction D _W, both in the longitudinal direction D _L of the cyclodextrin arrangement area T _C Edge E _LC, 'both edges E _WC in _{the LC} and the width direction D _W, E' E _WC is, both edges E _LH in the longitudinal direction D _L of each of the adhesive coating regions T _H, E _'LH and both edges E _WH in the width direction D _W, than E _'WH, and is configured to be located inward in the longitudinal direction D _L and the width direction D _W.

Here, in the present specification, the “adhesive coated region” means a region in a plan view to which the adhesive is applied, and specifically, the longitudinal direction _DL and the width direction _DW of the absorbent article a extending region, the end portion of the adhesive positioned on the most outer side in the width direction D _W, formed by connecting the along the longitudinal direction D, respectively the longitudinal direction D _L on both sides of the _L 2 2 that the longitudinal imaginary straight line of the present, the end of the adhesive located on the most outer side in the longitudinal direction D _L, formed by connecting along each of the width direction D _W on both sides in the width direction D _W Point in the width direction of the virtual straight line. In FIG. 3, the two longitudinal imaginary straight line and said two widthwise imaginary straight line, the only parts (segments) for partitioning the adhesive coated area T _H, respectively adhesive coated areas both edges E _WH in the width direction D _W of the T _H, E _'WH and opposite end edges E _LH in the longitudinal direction D _L, E' are shown as _LH.

The adhesive coated regions T _H, from the viewpoint of efficiency of contact with the body fluid and a cyclodextrin discharged from the wearer, as shown in FIG. 3, in plan view, extending in the longitudinal direction D _L of the absorbent article with extending the width direction D _W across the width direction D _W a central axis C _L, longitudinal D across the central axis C _W extending in the width direction D _W of the absorbent article in the longitudinal direction D _L a region extending _L, and is preferably a region that overlaps the body fluid absorbent region T _a of the absorbent article, more preferably a region encompassing the body fluid absorbent region T _a.

Further, in the present specification, the “cyclodextrin arrangement region” means a region in a plan view in which cyclodextrin is arranged on the surface of the cyclodextrin holding sheet, and specifically, the longitudinal direction _DL and the above a region extending in the width direction D _W, the end of the cyclodextrin is located in the most outer side in the width direction D _W, tied to each of the longitudinal direction D _L on both sides of the longitudinal direction D _L 2 the two longitudinal imaginary straight line comprising, an end portion of the cyclodextrin is located in the most outward in the lengthwise direction D _L, formed by connecting to each of the widthwise direction D _W on both sides in the width direction D _W Point in the width direction of the virtual straight line. In FIG. 3, the two longitudinal imaginary straight line and said two widthwise imaginary straight line, the only parts (segments) for partitioning the cyclodextrin arrangement area T _C, respectively cyclodextrin arrangement area T _C The end edges E _WC , E ′ _WC in the width direction D _W of the and the both end edges E _LC , E ′ _LC in the longitudinal direction D _L are shown.

The cyclodextrin arrangement region T _C is a longitudinal direction D _{L of the} absorbent article in a plan view as shown in FIG. 3 from the viewpoint of, for example, the improvement of the contact efficiency between the body fluid discharged from the wearer and the cyclodextrin. longitudinal across the central axis C _L across the width direction D _W with extending the width direction D _W, the central axis C _W extending in the width direction D _W of the absorbent article in the longitudinal direction D _L extending a region extending to the D _L, preferably a region that overlaps with the body fluid absorbent region T _a of the absorbent article, more preferably a region encompassing the body fluid absorbent region T _a. If the cyclodextrin arrangement area T _C is an area including the body fluid absorption area T _A of the absorbent article, the body fluid such as urine excreted from the wearer can easily contact the cyclodextrin, and the deodorizing function of the cyclodextrin is And the sustained release function of the perfume can be exhibited more reliably.

In this embodiment, in the light incontinence pad 1, cyclodextrin in the cyclodextrin-containing layer is partially bonded to the carrier sheet 5 ′ (cyclodextrin holding sheet) made of a tissue or the like by the adhesive, and Both ends E _LC and E ′ _LC in the longitudinal direction D _L of the cyclodextrin arrangement region T _C and both ends E _WC and E ′ _WC in the width direction D _W are respectively coated with the adhesive in plan view both edges E _LH in the longitudinal direction of the region T _H, 'both edges E _WH in _LH and the width direction D _W, E' E than _WH, inwardly in the longitudinal direction D _L and the width direction D _W In the portion where cyclodextrin is held on the carrier sheet 5 'by the adhesive, it has a structure located in the cyclodextrin-containing absorbent layer 4 The cyclodextrin-containing absorbent layer 4 is a part where the cyclodextrin is difficult to move in the surface direction of the carrier sheet 5 'and cyclodextrin is not held by the adhesive on the carrier sheet 5'. Cyclodextrin can move to a certain extent in the surface direction of the carrier sheet 5 ', but both end edges E _LC and E' _LC in the longitudinal direction D _L of the cyclodextrin arrangement region T _C and the width direction D _W The adhesive which is located on the outer side of the both end edges E _WC and E ′ _WC respectively makes it more difficult to move to the outer side. Therefore, light incontinence pad 1 of the present embodiment can keep the cyclodextrin cyclodextrin-containing layer to the adhesive coated area T _H defined by the adhesive, cyclodextrin is unevenly distributed Can be effectively prevented. As a result, since the light incontinence pad 1 of the present embodiment can contact body fluid such as urine excreted from the wearer with cyclodextrin steadily, the deodorizing function of cyclodextrin (adsorption function of odor component) And the sustained release function of the active ingredient such as the perfume can be stably exhibited.

In the light incontinence pad 1 of this embodiment, the cyclodextrin arrangement area T _C said longitudinal D _L both edges in E _LC of, E _'LC and opposite end edges E _WC in the width direction D _W, E' _WC but both edges E _LH in the longitudinal direction of each of the adhesive coating regions T _H, E _'LH and opposite end edges E _WH in the width direction D _W, E' than _WH, the longitudinal D _L and the width has the structure located inward in the direction D _W, in the absorbent article of the present invention is not limited to this structure, in the longitudinal direction D _L of the cyclodextrin arrangement area T _C Either end edges E _LC , E ′ _LC or both end edges E _WC , E ′ _WC in the width direction _DW are the end edges E _LH , E ′ _LH or in the longitudinal direction of the adhesive coated area T _H both edges E _WH in the width direction D _W, than E _'WH, said longitudinal D _L It is may have a structure located inwardly in the width direction D _W. Also in the absorbent article having such a structure, it is possible to keep a certain degree of cyclodextrin of the cyclodextrin-containing layer to the adhesive coated area T _H which is defined by the adhesive, cyclodextrin It can be sufficiently prevented from becoming ubiquitous.

As described above, in the light incontinence pad 1 of the present embodiment, the cyclodextrin-containing layer includes two cyclodextrin-containing absorbent layers 4 including the cyclodextrin, and a mixture of the absorbent polymer and the liquid-retaining substance. In the absorbent article of the present invention, the structure is not limited to the above-described structure. For example, the cyclodextrin-containing layer may be used to break up one liquid-permeable sheet together with any form of cyclodextrin, such as powder, if necessary together with the absorbent polymer and / or the liquid-retaining substance. As in the second embodiment, which is sandwiched between or surrounded by three or more liquid-permeable sheets, or as in the second embodiment described later, one liquid-permeable sheet (cyclodextrin-coated sheet) from the non-skin opposing surface side It can be configured to be coated. When a plurality of liquid permeable sheets are used as a carrier sheet, each liquid permeable sheet may use the same type of liquid permeable sheet or may use different types of liquid permeable sheets.

The liquid-permeable sheet used for the carrier sheet in the present invention may be, for example, any sheet-like fibrous structure such as nonwoven fabric (including tissue) consisting of an aggregate of fine fibers such as pulp, woven fabric and the like. The basis weight of the fiber structure is not particularly limited, but it is, for example, 1 to 50 g / m ² , preferably 5 to 30 g / m ² , more preferably 10 to ²⁰ , from the viewpoint of liquid permeability and cyclodextrin outflow prevention. It is 20 g / m ² .

In addition, the fiber structure can permeate body fluid discharged from the wearer, and cyclodextrin does not pass between the constituent fibers of the fiber structure and flow out of the cyclodextrin-containing layer (for example, It is preferable to have an inter-fiber distance smaller than the particle diameter of cyclodextrin powder described later. As such a fiber structure, for example, a fiber structure in which an inter-fiber distance of 1 to 300 μm occupies 90% or more of the whole is mentioned, and preferably, an inter-fiber distance of 10 to 150 μm is 90% or more of the whole. The fiber structure which occupies

Here, the inter-fiber distance of the fiber structure can be measured using a mercury porosimeter (manufactured by Shimadzu Corporation) or the like in accordance with the mercury intrusion method (JIS R 1655). In this mercury intrusion method, the pressure applied to mercury when mercury is injected between constituent fibers of a fiber structure to be measured, and the volume of mercury pushed into the space between constituent fibers of the fiber structure. The information on the structure of the fibrous structure can be obtained by measuring

Specifically, the inter-fiber distance of the fiber structure can be measured using a mercury porosimeter according to the following procedure.
1) Cut a fiber structure to be measured into 24 mm × 15 mm to prepare a measurement sample. Three measurement samples are prepared.
2) After setting the three measurement samples in a sample cell of a mercury porosimeter (manufactured by Shimadzu Corporation) so as not to overlap with each other, the structure of the fiber structure while gradually changing the pressure applied to the mercury Measure the volume of mercury (i.e. pore volume) pushed into the space between the fibers (i.e. the pores). The measurement is performed under an environment of 22 ° C. and 65% RH.
3) Calculate the pore diameter D (μm) of the pores (that is, the inter-fiber distance (μm) of the fiber structure) according to the following formula (1), and determine the relationship between the pore diameter D and the pore volume Obtained as a distribution curve (differential integral curve) of the pore diameter D. Various measurement conditions in the following equation (1) are that the surface tension of mercury is 0.483 N / m, the contact angle is 130 °, and the mercury pressure is 0 to 414 MPa (absolute pressure).

(Wherein, D is the pore diameter (inter-fiber distance), γ is the surface tension of mercury, θ is the contact angle, and P is the pressure.)
4) From the distribution curve of the obtained pore diameter D, calculate the ratio of the volume of pores having a pore diameter D of 1 to 300 μm (or 10 to 150 μm) to the total volume of pores having a pore diameter D of 0 to 500 μm .
5) The above operations 2) to 4) are performed three times, and the average value of the volume ratio obtained is taken as the ratio (%) of the inter-fiber distance of 1 to 300 μm (or 10 to 150 μm) to the whole.

Moreover, in the light incontinence pad 1 of the present embodiment, the cyclodextrin-containing layer is a carrier comprising the cyclodextrin in the cyclodextrin-containing absorbent layer 4 and a tissue disposed on the non-skin facing surface side of the cyclodextrin. Although the sheet 5 'is partially bonded by the adhesive, in the absorbent article of the present invention, the bonding form of the cyclodextrin and the carrier sheet (liquid permeable sheet) is limited to such a form. For example, cyclodextrin may be bonded to a liquid permeable sheet disposed on the skin-facing surface side of the cyclodextrin, and the cyclodextrin may be a skin-facing surface side of the cyclodextrin and non-skin. You may each be joined with the liquid-permeable sheet arrange | positioned on both the opposing surface side.

Here, cyclodextrin is a cyclic oligosaccharide in which glucopyranose units are linked by an α-1,4 bond, and in general, the number of glucopyranose units contained in one cyclodextrin molecule is 6 -Cyclodextrin, 7 as β-cyclodextrin, 8 as γ-cyclodextrin. Cyclodextrin can include other molecules (for example, active ingredients such as perfumes and deodorant components, odor components of excrement, etc.) inside the cyclic structure due to the presence of water etc. Can be released by external action such as environmental change. The cyclodextrin used in the absorbent article of the present invention is not particularly limited, and may be chemically modified (eg, methylated or acetylated) in addition to α-, β-, γ-cyclodextrin and / or a mixture thereof For example, α-, β-, γ-cyclodextrin and / or a mixture thereof can be used. In addition, in the absorbent article of this invention, the "cyclodextrin" contains the cyclodextrin etc. which hold | maintained various active ingredients, such as a fragrance | flavor, besides the cyclodextrin which is not included.

In the absorbent article of the present invention, as the cyclodextrin, it is preferable to use cyclodextrin carrying any perfume such as natural perfume and synthetic perfume. The cyclodextrin carrying such a perfume has the function of gradually releasing the perfume held in the cyclodextrin by contact with a body fluid such as urine excreted from the wearer, so the cyclodextrin was released The perfume can mask the odor of the body fluid, and the unclathrated cyclodextrin after releasing the perfume can adsorb an odor component such as an ammonia component contained in the body fluid. Therefore, if cyclodextrin which holds such a perfume is used, the odor which arises from bodily fluids, such as urine excreted from a wearer, can be controlled effectively.

In addition, the fragrance to be held by the cyclodextrin is not particularly limited, and any fragrance such as a conventionally known natural fragrance or synthetic fragrance can be used, but the absorbent article is to be applied to the human body In view of the above, it is preferable to use a plant-derived natural flavor. Moreover, it is preferable that the fragrance which the said cyclodextrin is made to hold | maintain is the same component as the above-mentioned liquid fragrance. Even if the body fluid such as urine excreted from the wearer comes into contact with the cyclodextrin holding the perfume if the perfume is the same component, and the perfume is released from the cyclodextrin, different due to the respective perfume There is no possibility that the smells will be mixed to change the smell, and there will not be an unpleasant smell in which a plurality of smells are mixed. Furthermore, when body fluid such as urine is expelled from the wearer, in addition to the scent by the liquid perfume, a scent by the perfume released from the cyclodextrin is generated, so the scent emitted from the absorbent article is enhanced The odor at the time of discharge of the body fluid can be masked more strongly.

Furthermore, in the absorbent article of the present invention, the combination of an unincorporated cyclodextrin (a cyclodextrin which does not hold a fragrance) and a cyclodextrin which holds a fragrance adds to the effect of the cyclodextrin which holds the above-mentioned fragrance. Therefore, since it is possible to secure a certain amount or more of unincorporated cyclodextrin in the absorbent article, it is possible to more surely express the adsorption effect of the odorous component by the unincorporated cyclodextrin, and absorbability The deodorizing action of the article can be further increased. It is preferable to use 5 to 50% by mass of cyclodextrin which is not included, with respect to the total amount of cyclodextrin used. In addition to the inclusion complex in which the perfume is contained inside the cyclic structure of the cyclodextrin molecule, the cyclodextrin molecule retaining the perfume is associated with the cyclodextrin molecule and the perfume by various intermolecular forces, intermolecular interactions, etc. Including those that

The form of cyclodextrin used in the absorbent article of the present invention is not particularly limited, and various forms can be used, but the dispersibility, easiness of handling at the time of production, urine excreted from the wearer, etc. From the viewpoint of improving the contact efficiency with the body fluid, etc., it is preferable to use as a cyclodextrin powder having a particle size adjusted with a binder such as maltocyclodextrin, pullulan and gum arabic. The particle size of the cyclodextrin powder is not particularly limited, and for example, one having a size of about 5 μm to 300 μm, preferably 10 μm to 100 μm can be used, but the carrier sheet adjacent to the cyclodextrin (liquid permeable sheet) It is particularly preferable to have a particle size greater than the inter-fiber distance of the fiber structure constituting When the particle size of the cyclodextrin powder is greater than the inter-fiber distance of the fiber structure constituting the carrier sheet, the cyclodextrin powder passes between the constituent fibers of the fiber structure and the cyclodextrin-containing layer Since it can be prevented from flowing out, it is possible to stably and sufficiently exert the deodorizing function of cyclodextrin and the sustained release function of an active ingredient such as a fragrance.

In addition, the particle size of the above-mentioned cyclodextrin powder can be measured by a dry laser diffraction scattering method using a laser diffraction / scattering type particle size distribution measuring apparatus (for example, Microtrac MT3300EXII manufactured by Nikkiso Co., Ltd.). In this dry laser diffraction scattering method, while a powder sample is dispersed by air, the sample is irradiated with a laser beam, and the particle size distribution based on volume is measured from the diffraction scattering pattern, and in the present specification, The median diameter (D50) obtained from the particle size distribution is used as the particle size of the powder. Specific measurement conditions by the dry laser diffraction scattering method are as follows.
Number of measurements: 1 measurement time: 10 seconds Dispersion pressure: 100 kPa
Particle permeability: transmission Particle refractive index: 1.81
Particle shape: non-spherical solvent: air (air)
Solvent refractive index: 1.00
Measurement range: 0.243 to 2000 μm

In addition to the above-mentioned non-inclusion cyclodextrin and cyclodextrin which retains a flavor, the cyclodextrin powder or cyclodextrin has cyclodextrin which retains any active ingredient such as a deodorant ingredient, and / or a binder or absorption. A small amount (for example, 10% by mass or less) of an optional functional component such as a sex component (for example, pulp or absorbent polymer), an adsorptive component (for example, zeolite, silica gel, activated carbon or the like) may be included. Examples of the active ingredient include conventionally known deodorant ingredients, antibacterial ingredients, and mixtures thereof. Cyclodextrin having such an active ingredient can be combined with a cyclodextrin molecule by various intermolecular forces, intermolecular interactions, etc. in addition to an inclusion complex in which the active ingredient is included inside the cyclic structure of the cyclodextrin molecule. It includes those associated with the active ingredient.

The cyclodextrin (that is, the cyclodextrin complex) retaining the active ingredient gradually releases the active ingredient retained in the cyclodextrin by contacting with the water contained in the body fluid such as urine excreted from the wearer And has a function to express the action of the active ingredient. Such a cyclodextrin complex can be easily obtained, for example, by adding a fragrance and an active ingredient to a solution containing unclathrated cyclodextrin and stirring and mixing. Further, the presence or absence of the inclusion of cyclodextrin can be confirmed by elemental analysis or the like using X-rays.

In the light incontinence pad 1 of the present embodiment, the cyclodextrin-containing layer includes the cyclodextrin-containing absorbent layer 4 including the cyclodextrin described above, and a mixture of the absorbent polymer and the liquid-retaining substance (for example, pulp). A structure sandwiched by carrier sheets 5 and 5 'consisting of two liquid permeable sheets (eg, tissue etc.) positioned on the skin-facing surface side and the non-skin-facing surface side of the cyclodextrin-containing absorbent layer 4 Further, at least a portion of the cyclodextrin in the cyclodextrin-containing absorbent layer 4 is a carrier positioned on the non-skin facing surface side of the cyclodextrin-containing absorbent layer 4 by a hot melt adhesive. It is hold | maintained on the surface of skin opposing surface side of sheet | seat 5 '(cyclodextrin holding sheet | seat). When the cyclodextrin-containing layer is configured in this manner, when the body fluid such as urine discharged from the wearer reaches the cyclodextrin-containing layer, the body fluid acts as a gravitation to act on the cyclodextrin-containing absorbent layer. In order to move to a lower part (non-skin facing surface side) part in 4 and stay in the part, the cyclodextrin in which the body fluid retained in the part is held on the surface of the carrier sheet 5 'on the skin facing surface side A state in which the cyclodextrin is in contact can be formed, and the deodorizing function of cyclodextrin and the sustained release function of an active ingredient such as a fragrance can be exhibited more efficiently and more effectively.

Such a cyclodextrin-containing layer is obtained by using a hot-melt type adhesive 2 for the cyclodextrin-containing absorbent layer 4 containing the cyclodextrin described above, and the mixture of the above-mentioned absorbent polymer and the above-mentioned liquid-retaining substance. It can be obtained by bonding to a single carrier sheet 5, 5 '. Specifically, while the carrier sheet 5 '(cyclodextrin holding sheet) made of a tissue or the like is on the side facing the wearer's skin facing up, the carrier sheet 5' is held stationary or conveyed. an adhesive coating step of coating along a direction corresponding to the adhesive on the surface skin-facing surface side of the carrier sheet 5 'in the longitudinal direction D _L of the light incontinence pad 1, a cyclodextrin, cyclodextrin arrangement step of arranging at least on the upper surface of the adhesive of the adhesive in the coating adhesives coated region T _H, the mixture of the absorbent polymer and the liquid retaining material (e.g., pulp) by placing at least the adhesive and the cyclodextrin on the surface of the adhesive coating in the region T _H in the carrier sheet 5 ', cyclodextrin-containing In the cyclodextrin-containing absorbent layer forming step of forming the absorbent layer 4, and on the surface of the cyclodextrin-containing absorbent layer 4 facing the skin, the carrier sheet 5 is disposed with or without an adhesive. Through the carrier sheet disposing step, the cyclodextrin-containing layer described above can be obtained.

In the cyclodextrin disposing step, the method of disposing the cyclodextrin on the surface of the adhesive coated on the carrier sheet is not particularly limited, and even if it is disposed in the above-mentioned granular state, Even when disposed in a dispersion medium (eg, polysiloxane oil, mineral oil, etc.), solvents (eg, diols such as propylene glycol, dipropylene glycol, 1,3-butanediol, etc., triethyl citrate, phthalate) You may arrange | position in the state of the solution which melt | dissolved in ester type organic solvents, such as acid diethyl.

Further, in the cyclodextrin arrangement step, the arrangement means of cyclodextrin is not particularly limited. For example, any form such as spray form, plural streaks, omega form and the like using a non-contact type or contact type coater. It can be coated with Cyclodextrins, in plan view, also be applied without any gaps to the cyclodextrin arrangement region T _C, the region where the cyclodextrin is not in the cyclodextrin arrangement region T _C (i.e., cyclodextrin absent region) more It may be coated to be formed. In particular, cyclodextrins arrangement area T _C comprises an overlapping area overlapping with the bodily fluid absorbent region T _A of the absorbent article, it is preferable to coat such cyclodextrin absent region in the overlapping region is formed with a plurality. When such a cyclodextrin-free region is formed, the region functions as a passage for body fluid such as urine excreted from the wearer, so that the body fluid is inhibited by the cyclodextrin-containing absorbent layer. Instead, it can penetrate in the thickness direction _DT of the absorbent article. As a result, the absorbent article of the present invention can exhibit excellent absorption performance as well as deodorizing function.

Moreover, in the absorbent article of the present invention, the coating amount of cyclodextrin is not particularly limited, and can be appropriately set according to the desired deodorizing performance, absorption performance, etc. For example, per absorbent article It can be 20 mg to 100 mg. Furthermore, as shown in FIG. 3, the cyclodextrin is a fluid absorption region T of the absorbent article in plan view, as shown in FIG. 3, from the viewpoint of increasing the chance of contact with cyclodextrin and body fluid such as urine excreted from the wearer. It is preferable to arrange | position in the area | region containing _A.

In the present embodiment, the cyclodextrin-containing absorbent layer 4 in the cyclodextrin-containing layer contains cyclodextrin, and a mixture of the absorbent polymer and the liquid-retaining substance, and functions as an absorbent layer. In the present embodiment, the cyclodextrin-containing absorbent layer is not particularly limited as long as it is a layer having absorbency containing cyclodextrin, but the cyclodextrin-containing absorbent layer is composed of cyclodextrin, an absorbent polymer and pulp. Those containing a mixture are preferred. When the cyclodextrin-containing absorbent layer is used in such an embodiment, in the cyclodextrin-containing absorbent layer, the aggregate of pulp reaches the cyclodextrin-containing absorbent layer as a capillary fluid by capillary action. Since it acts to diffuse in a wide range in the dextrin-containing absorbent layer, the body fluid can be absorbed and held in a wide range of places in the cyclodextrin-containing absorbent layer, and the absorbent article has excellent absorption performance as an absorbent article. The cyclodextrin-containing absorbent layer is capable of absorbing and retaining the body fluid, so that the cyclodextrin-containing cyclodextrin is contained even when the amount of body fluid such as urine excreted from the wearer is large. The body fluid held inside the absorbent layer is contained in the cyclodextrin-containing absorbent layer. It can be steadily contact over a long period of time in cyclodextrin.

In the cyclodextrin-containing absorbent layer, the content of the absorbent polymer and the liquid-retaining substance is not particularly limited, but the content is 60 parts by mass or less and 40 parts by mass or more per 100 parts by mass in total. Is preferred. In the cyclodextrin-containing absorbent layer, when the content of the absorbing polymer is 60 parts by mass or less, the amount of the body fluid that can be in contact with the cyclodextrin and the contact time can be increased since the body fluid which is not absorbed by the absorbing polymer tends to be present. When the content of the liquid retaining substance is 40 parts by mass or more, the body fluid is more likely to be diffused more widely by the capillary phenomenon of the liquid retaining substance, so that the body fluid and the cyclodextrin are more A wide range of areas can be contacted.

In the light incontinence pad 1 of the present embodiment, at least a part of cyclodextrin in the cyclodextrin-containing absorbent layer 4 of the cyclodextrin-containing absorbent layer 4 is a hot-melt adhesive in which the carrier sheet 5 '(cyclo In the absorbent article of the present invention, the adhesive for bonding the cyclodextrin and the cyclodextrin holding sheet is not particularly limited, and any conventionally known adhesive is used. Can be used.

Further, in the light incontinence pad 1 of the present embodiment, together with the adhesive extends in the longitudinal direction D _L between the carrier sheet 5 'and the (cyclodextrin holding sheet) cyclodextrin-containing absorbent layer 4, A plurality of rows are arranged in the width direction _DW . When the adhesive is disposed in this manner, in plan view, a region where the adhesive is not present in the adhesive coating in the region T _H (i.e., adhesive absence region) is partially formed, the region the thickness but to function as a passage of a body fluid such as urine discharged from the wearer, the body fluid, said without being hindered by the adhesive, while being diffused in the longitudinal direction D _L of the cyclodextrin holding sheet The cyclodextrin holding sheet can be penetrated to the non-skin facing surface side in the direction _{DT, and when} the body fluid penetrates from the skin facing surface side of the cyclodextrin holding sheet to the non-skin facing surface side The body fluid diffused in the surface direction of the cyclodextrin holding sheet is brought into contact with the cyclodextrin in a wide range by spreading while diffusing in the surface direction of the Door can be. As a result, the absorbent article of the present invention can effectively exhibit the deodorizing function of a cyclodextrin and the sustained release function of a perfume more effectively while having a good absorption performance as an absorbent article. .

In the light incontinence pad 1 of the present embodiment, the application form of the adhesive is not particularly limited. For example, a linear solid line such as a straight line, a wave shape, a spiral shape, a zigzag shape, or an omega shape in planar view Alternatively, it can be applied in any form such as a dotted line; a dot shape; a geometric pattern such as a grid shape. The adhesive for bonding said cyclodextrin with said cyclodextrin holding sheet, in plan view, so that the adhesive is present without a gap in the adhesive coating in the region T _H, planar form It can also be coated on the cyclodextrin holding sheet by (so-called, solid coating). When the adhesive is applied in the form of such a solid coating, the adhesive intrudes between the constituent fibers of the fiber structure constituting the cyclodextrin holding sheet to be filled in the voids in the fiber structure, The cyclodextrin held by the cyclodextrin holding sheet is less likely to permeate the liquid permeable sheet and flow out of the cyclodextrin-containing layer, and the strength of the liquid permeable sheet is increased so that it is not easily broken when worn. Also, shrinkage due to heat is less likely to occur. As a result, since the absorbent article of the present invention can stably maintain the structure of the cyclodextrin-containing layer, the deodorizing function of the cyclodextrin in the cyclodextrin-containing layer and the sustained release function of the perfume can be further enhanced. It can be made to exhibit stably and more reliably. In the absorbent article having a structure in which cyclodextrin is bonded to the sheet positioned on the skin-facing surface side of the cyclodextrin as in the second embodiment described later, the adhesive is retained in the cyclodextrin as described above. When the sheet is overcoated, the adhesive will inhibit the liquid permeability of the cyclodextrin holding sheet, which is not preferable.

In the absorbent article of the present invention, the coating amount of the adhesive is not particularly limited, and can be appropriately set according to the desired adhesive strength, liquid permeability, deodorizing performance, etc. It can be 40 g / m ² , preferably 2 to 20 g / m ² , and more preferably 4 to 10 g / m ² .

Next, a second embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of the light incontinence pad according to the first embodiment of the present invention, and is also a plan view of the light incontinence pad according to the second embodiment of the present invention. 4 is an end view of a cross section along line II-II 'of FIG. 1 in the light incontinence pad of the second embodiment of the present invention. In the light incontinence pad 1 according to the second embodiment, a cyclodextrin-containing layer (in the first embodiment, the cyclodextrin-containing absorbent layer 4 in the first embodiment) is a cyclodextrin layer 4 'composed only of cyclodextrin. At least a part of the cyclodextrin is held on the surface (holding surface) on the non-skin facing surface side of the liquid-permeable sheet 7 ′ located between the surface sheet 2 and the cyclodextrin layer 4 ′. And the liquid permeable sheet 7 ′ is a liquid disposed on the skin facing surface side of the absorbent material, with the absorbent material such as the absorbent polymer 6 held on the surface opposite to the holding surface. with permeable sheet 7, an absorbent sheet S _a that forms a _(absorption layer), and the cyclodextrin, cyclodextrin coating of liquid-permeable sheet of tissue or the like In the same manner as in the above-described embodiment except that it is coated from the non-skin facing surface side by the belt 10 (that is, the cyclodextrin-containing layer includes the cyclodextrin layer 4 'and the cyclodextrin-coated sheet 10). The configuration of

In the light incontinence pad 1 of the present embodiment, since the cyclodextrin-containing layer is composed only of cyclodextrin, it is possible to increase the chance that body fluid such as urine excreted from the wearer comes into contact with the cyclodextrin. While being able to do, the thickness of the layer containing said cyclodextrin can be made thin, and arbitrary product designs, such as slimming according to the amount of absorption, can be realized.

In the light incontinence pad 1 of the present embodiment, the non-skin facing surface side of the liquid-permeable sheet 7 ′ in which at least a part of the cyclodextrin is located between the surface sheet and the cyclodextrin layer 4 ′. The liquid-permeable sheet 7 'is held on a holding surface, and the liquid-permeable sheet 7' holds an absorbent material such as an absorbent polymer 6 on the surface opposite to the holding surface (that is, the surface on the skin facing surface side). The absorbent sheet S _A (absorbent layer) is formed together with the liquid-permeable sheet 7 disposed on the skin-facing side of the absorbent material. When the light incontinence pad 1 configured in this manner, when the body fluid such as urine discharged from the wearer has reached the absorbent sheet S _A, the body fluid, the absorbent sheet in the S _A by the action of gravity for camping in partial shifts to portion of the lower (non-skin facing side), fluid held partial is, while spreading in the planar direction of the absorbent sheet S _a, the liquid-permeable sheet 7 By gradually penetrating the fluid, the body fluid can be brought into contact with the cyclodextrin held on the non-skin-facing side of the liquid-permeable sheet 7 'in a wider area. As a result, the deodorizing function of cyclodextrin and the controlled release function of an active ingredient such as a fragrance can be more efficiently exhibited.

Note that in the light incontinence pad 1 of the second embodiment, the absorbent sheet S _A, can be prepared similarly to the absorbent sheet in light incontinence pad 1 of the first embodiment described above. And In this second embodiment, the skin-facing side of the absorbent sheet S _A surface (i.e., the non-skin facing side of the liquid-permeable holding surface of the sheet 7 'constituting the absorbent sheet) above a was coated along a direction corresponding to a hot-melt adhesive in the longitudinal direction D _L of the light incontinence pad 1, at least of the adhesive in the adhesive coating regions T _H which is applied Forming cyclodextrin layer 4 'by placing cyclodextrin on the surface of the adhesive, and further covering cyclodextrin coated sheet 10 consisting of liquid permeable sheet on cyclodextrin layer 4'. in, that it said joined to the absorbent sheet S _a, obtaining a cyclodextrin-containing layer comprising the cyclodextrin-containing absorbent layer 4 and the cyclodextrin cover sheet 10 Can.

Further, in the light incontinence pad 1 of the present embodiment, the cyclodextrin held by the liquid permeable sheet 7 ′ is coated from the non-skin opposing surface side with a cyclodextrin coated sheet 10 made of a liquid permeable sheet such as a tissue. Therefore, the cyclodextrin can be steadily held on the holding surface of the liquid-permeable sheet 7 ', and the cyclodextrin is deodorant function and the sustained release function of active ingredients such as perfume is stably exhibited. It can be done.

In the present embodiment, the cyclodextrin-coated sheet 10 is preferably made of the same material as the carrier sheet in the light incontinence pad 1 of the first embodiment described above, that is, a fiber structure such as a tissue. When such a fiber structure is used as the cyclodextrin-coated sheet 10, the body fluid that has reached the cyclodextrin-coated sheet 10 can be diffused in the surface direction of the cyclodextrin-coated sheet 10; It can be made to contact with the cyclodextrin located in the skin opposing surface side of the said cyclodextrin coated sheet 10 in a wide range area | region. In addition, when using the above-mentioned fiber structure as said cyclodextrin coated sheet 10, the said fiber structure is a grade which does not pass through between the constituent fibers of a fiber structure (for example, the cyclodextrin powder mentioned above). It is preferred to have an inter-fiber distance smaller than the particle size.

The present invention can be applied to various absorbent articles such as, for example, panty liners, sanitary napkins and disposable diapers, in addition to the light incontinence pads of the above-described embodiments. In addition, the absorbent article of the present invention is not limited to the embodiments described above, and can be appropriately combined or changed without departing from the object and the purpose of the present invention. In the present specification, the ordinal numbers such as "first" and "second" are used to distinguish the items to which the ordinal numbers are attached, and mean the order, priority, importance, etc. of each item. It is not something to do.

1 Light incontinence pad (absorbent article)
2 Surface sheet (liquid permeable layer)
3 back sheet (liquid impervious layer)
4 Cyclodextrin-containing absorbent layer 4 'Cyclodextrin layer 5 Carrier sheet 5' Carrier sheet 6 Absorbent polymer (absorbent material)
7 skin opposite surface side liquid permeable sheet 7 'non-skin opposite surface side liquid permeable sheet 8, 8' side gather sheet 9, 9 'thread-like elastic member 10 cyclodextrin coated sheet 11 absorbent polymer arrangement area 12 absorbent polymer non Arrangement area 13 Absorbent polymer absent area 14 Squeezed groove 15 Density part G Adhesive T _A Body fluid absorption area T _C Cyclodextrin arrangement area T _H Adhesive application area T _F , T ' _F Perfume arrangement area

Claims

An absorbent article comprising a liquid permeable layer, a liquid impermeable layer, an absorbent layer located between the two layers, and a cyclodextrin-containing layer located between the absorbent layer and the liquid impermeable layer.
The absorbent article according to claim 1, wherein the absorbent layer comprises an absorbent polymer and a liquid-permeable sheet holding the absorbent polymer, and does not contain pulp fibers.
The absorbent layer has a longitudinal direction, a width direction, and a thickness direction, and the absorbent polymer is sandwiched by the liquid permeable sheet in the thickness direction, and is an absorbent present in the central region in the width direction. And an absorbent polymer non-arrangement region adjacent to the absorbent polymer arrangement region in the width direction, and the liquid-permeable sheet is a fold extending in the longitudinal direction in the absorbent polymer non-arrangement region The absorbent article according to claim 1, wherein the absorbent article is folded inward in the width direction by a line.
The absorbent layer has an absorbent polymer non-existing area where the absorbent polymer is not locally present in the absorbent polymer arrangement area in a plan view, and the absorbent article is the liquid-permeable layer The absorbent according to claim 3, further comprising a pressing groove extending from the surface facing the skin to at least the inside of the absorbent layer, wherein the pressing groove is formed in the region where the absorbent polymer is absent in plan view. Sex goods.
The absorbent article according to any one of claims 1 to 4, wherein the cyclodextrin-containing layer comprises a cyclodextrin complex comprising a cyclodextrin carrying a perfume and a cyclodextrin carrying no perfume.
The absorbent article according to any one of claims 1 to 5, wherein the cyclodextrin-containing layer comprises cyclodextrin powder particles containing at least one of cyclodextrin and a cyclodextrin complex, and an absorbent material. .
The absorbent material is a mixture of an absorbent polymer and a liquid-retaining substance, and comprises 60 parts by mass or less and 40 parts by mass or more of the absorbent polymer and the liquid-retaining substance per 100 parts by mass of the total of them. The absorbent article according to claim 6.
The cyclodextrin-containing layer further includes a cyclodextrin holding sheet located between the cyclodextrin powder and the absorbent material and the liquid impermeable layer and holding at least a portion of the cyclodextrin powder. The absorbent article of Claim 6 or 7 containing.
The cyclodextrin-containing layer is located between cyclodextrin powder and at least one of cyclodextrin and a cyclodextrin complex, the cyclodextrin powder and the liquid impermeable layer, and the cyclodextrin powder. The absorbent according to any one of claims 1 to 5, further comprising: a cyclodextrin-coated sheet for covering granules, wherein at least a part of the cyclodextrin granules are fixed to the absorption layer. Goods.
The absorbent article according to any one of the preceding claims, wherein the absorbent layer comprises a perfume.
The absorbent article according to claim 10, wherein the absorbent layer contains the perfume in an area other than the body fluid absorbent area of the absorbent article.