JP5769896B1 - Absorbent articles - Google Patents

Abstract

The present invention provides an absorbent article that can efficiently and sufficiently exhibit the deodorizing function of cyclodextrin and the sustained release function of an active ingredient of a cyclodextrin complex. An absorbent article (1) according to the present invention comprises a liquid permeable layer (2), a liquid impermeable layer (3), an absorbent layer positioned between the two layers, the absorbent layer and the liquid. And a cyclodextrin-containing layer located between the impermeable layers (3). [Selection] Figure 2

Description

  The present invention relates to an absorbent article having an odor suppressing function.

  Absorbent articles such as light incontinence pads, sanitary napkins, and disposable diapers are used to absorb and retain bodily 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 emits an unpleasant odor, an absorbent article capable of suppressing the odor caused by such body fluid has been studied.

  As such an absorbent article, Patent Document 1 discloses that a cyclodextrin complex containing cyclodextrin and at least three components complexed with the cyclodextrin is closer to the body-facing surface than the absorbent core. Disposed absorbent articles are disclosed.

Special table 2013-545587 gazette

  However, since body fluids such as urine discharged from the wearer immediately pass through a layer close to the body-facing surface of the absorbent article (for example, a surface sheet), the absorption disclosed in Patent Document 1 When the cyclodextrin and the cyclodextrin complex are arranged in a layer close to the body-facing surface of the absorbent article as in the case of an absorbent article, the contact time between the cyclodextrin and the cyclodextrin complex and the body fluid is sufficient. The deodorizing function of cyclodextrin and the sustained release function of the active ingredient of the cyclodextrin complex may not be sufficiently exhibited.

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

  The absorbent article of the present invention includes a liquid-permeable layer, a liquid-impermeable layer, an absorbent layer located between these 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 absorbent layer and the liquid impermeable layer, body fluid such as urine discharged from the wearer permeates the liquid permeable layer. Then, when absorbed in the absorption layer, the body fluid accumulates in the lower portion of the absorption layer (that is, the portion on the cyclodextrin-containing layer side) by the action of gravity, and the accumulated body fluid is contained in the cyclodextrin-containing layer. At least one of the cyclodextrin and the cyclodextrin complex contained in the layer can be brought into contact with a wide contact area for a long time. As a result, the deodorizing function possessed by cyclodextrin and the sustained release function of active ingredients possessed by the cyclodextrin complex (such as fragrances and deodorizing components retained in cyclodextrin) can be efficiently and sufficiently exhibited. 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 viewed from the surface sheet side in the thickness direction in a developed state. FIG. 2 is an end view of a cross section taken along the 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 region, a cyclodextrin arrangement region, an adhesive coating region, and a fragrance coating region in the light incontinence pad of FIG. 1. FIG. 4 is an end view of a cross section taken along the 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 of the light incontinence pad 1 according to the first embodiment or the second embodiment of the present invention from the surface sheet (liquid permeable layer) side (that is, the skin facing surface side of the wearer) in a developed state. FIG. 2 is a plan view seen in the direction _DT , and FIG. 2 is an end view of a cross section taken along the line II-II ′ of 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 region, a cyclodextrin arrangement region, an adhesive coating region, and a fragrance coating region in the light incontinence pad of FIG. 1. In the present specification, unless otherwise specified, “viewing in the thickness direction from the liquid-permeable layer side in a 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 ends in the longitudinal direction have an arcuate shape. In the present invention, the shape of the absorbent article is not limited to such a shape, and any shape may be used as long as the length dimension in the longitudinal direction D _L is longer than the width dimension in the width direction D _W. A vertically long shape (for example, a rectangle, an ellipse, a bowl, etc.) can be used.

In this specification, a direction toward the central axis C _L extending in the longitudinal direction D _L of the absorbent article vertically long, referred to as the direction of the inner side in the width direction, a direction away from the central axis C _L, 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 That's it. Moreover, in thickness direction _DT of an absorbent article, the direction which goes to the side (skin opposing surface side) which opposes a wearer's skin surface is called the direction of a skin opposing surface side, and opposes a wearer's skin surface. The direction toward the side opposite to the side (non-skin facing surface side) is referred to as the non-skin facing surface side.

The absorbent article of the present invention, as shown in FIG. 3, in plan view, as well as extending across the longitudinal direction D central axis extending in the _L C _L in the width direction D _W of the absorbent article, the absorbent article 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 specifically, the type of the absorbent article, specifically from the wearer. Depending on the type of body fluid such as urine, feces, menstrual blood discharged, age and sex of the wearer, the position and area where the wearer's excretion port contacts, the structure of the absorbent layer, etc., for each type of absorbent article This is an area set as appropriate. 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. Further, the “region other than the body fluid absorption region” refers to a region other than the body fluid absorption region extending from the body fluid absorption region in the outward direction in the longitudinal direction and the width direction. A region that does not absorb the discharged body fluid and a region that can absorb the body fluid discharged from the wearer, although not a region corresponding to the body fluid excretion position of the wearer, are included.

As shown in FIG. 2, the light incontinence pad 1 according to the first embodiment of the present invention is located on the skin facing surface side of the wearer in the thickness direction _DT , and is optional such as a liquid-permeable nonwoven fabric or a plastic film. A liquid-permeable sheet, which is a liquid-permeable layer, and a liquid-permeable layer, and a liquid-impermeable non-woven sheet or plastic film which is located on the non-skin facing side of the wearer. , Two liquid-permeable sheets 7 and 7 ′ each composed of 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 the 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 material layer 4 containing a mixture of quality (for example, pulp and the like) is sandwiched between carrier liquids 5 and 5 'composed of two liquid-permeable sheets (for example, tissues and the like); The laminate from the top sheet to the back sheet is folded so as to be sandwiched from both outer sides in the width direction and joined to the laminate, and the inner edge in the width direction has a gather portion. A pair of side gather sheets 8 and 8 'extending in the longitudinal direction, which are free ends so as to be formed, and located near the folds of the pair of side gather sheets 8 and 8' and the pair of side gathers Each of the sheets is composed of various members including two linear elastic members 9 and 9 'arranged on each sheet.

In the present embodiment, the absorbent sheet S _A (absorbing layer) is not particularly limited as long as it has a function of absorbing and holding bodily fluids such as urine discharged from the wearer, but preferably as described above. A material in which an absorbent material containing at least the absorbent polymer 6 is sandwiched between two liquid-permeable sheets such as an air-through nonwoven fabric is used. Here, the “absorbent polymer” is a polymer that can absorb and retain water, and examples thereof include a polymer having a three-dimensional network structure in which a water-soluble polymer is appropriately crosslinked. Specific examples include starch-based, acrylic acid-based, and amino acid-based particulate or fibrous polymers. Since such an absorptive polymer absorbs not only water but also an odor composed of an ammonia component or the like, a deodorizing effect can be exhibited.

Moreover, as the absorptive polymer, a deodorant component-containing absorptive polymer in which absorptive polymer particles and an optional deodorant component are integrated can be suitably used. The deodorant component means a component that can eliminate odors caused by these odor components by adsorbing odor components such as ammonia and dimethylamine. Examples of such deodorizing components include activated carbon; alumina; zeolite; cyclodextrin; zeolite substituted with bactericidal metal cations such as silver and copper, and quaternary ammonium having a bactericidal action on the surface of activated carbon, alumina, and the like. Examples include a bactericidal deodorant component such as a complex to which a salt compound is attached; or a combination of two or more of these deodorant 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 ammonia odor is generated, but the above bactericidal deodorant component is contained in the urine. Since it acts as a bactericide against bacteria, it is an advantageous deodorizing component in that it can prevent the generation of ammonia odor by suppressing the decomposition of urea by urease. Moreover, since the effect of preventing the generation of such an ammonia odor can be obtained even when a bactericide having the same bactericidal action as the bactericidal deodorant component is used, for example, such a bactericide A disinfectant-containing absorptive polymer in which absorptive polymer particles and a disinfectant are integrated, which is obtained by spraying an aqueous solution containing the absorptive polymer particles, can also be suitably used in the present invention. .

  The deodorant component-containing absorbent polymer can be obtained by mixing and integrating the absorbent polymer particles and the deodorant component. Further, the deodorant component-containing absorbent polymer is made by adding water to the absorbent polymer particles to form a hydrogel, and then mixing the absorbent polymer in the hydrogel state with the deodorant component. It can also be obtained by making them.

In the present invention, the absorbent material that can be used for the absorbent sheet S _A (absorbing layer) is not particularly limited as long as it contains the above-described absorbent polymer, and other than the absorbent polymer, such as pulp. A liquid-retaining substance made of water-absorbing fibers can also be included. When the absorptive material contains the absorptive polymer and water-absorbing fibers, the content of the absorptive polymer is in the range of 10 to 90% of the mass of the water-absorbing fibers per unit area of the absorbent layer. In the present invention, from the viewpoint of efficiently contacting body fluid such as urine discharged from the wearer with cyclodextrin in the cyclodextrin-containing absorbent layer located on the non-skin facing surface side of the absorbent sheet. The absorbent material preferably does not contain a liquid-retaining substance such as pulp.

The liquid permeable sheet that can be used for the absorbent sheet S _A (absorbing layer) is not particularly limited as long as it is a liquid permeable sheet. For example, an air-through nonwoven fabric, a spunbond, a laminated nonwoven fabric (for example, , SBS nonwoven fabric, etc.) and hydrophilic nonwoven fabric such as tissue can be used. From the viewpoint of liquid permeability, the liquid-permeable sheet is preferably an air-through nonwoven 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 The two liquid-permeable sheets 7 and 7 ′ are arranged in the central region in the width direction _DW between the two liquid-permeable sheets 7 and 7 ′, and the region in which the absorbent polymer is disposed (absorbent polymer placement region 11) and the width direction D After sandwiching the absorbent polymer between the two liquid permeable sheets 7 and 7 'so that the absorbent polymer does not exist in the regions adjacent to both sides of _W, the two liquid permeable sheets 7, A region where the absorbent polymer is not disposed on both side edges in the width direction _DW of 7 ′ (absorbent polymer non-arrangement region 12) is each along the fold line extending in the longitudinal direction D _L in the width direction D. folding the inner side of the _W (so-called, Gakumaki To) can be prepared by. When the absorbent polymer non-arrangement region 12 on both side edges in the width direction of the two liquid-permeable sheets 7, 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. In this way, by folding each absorbent polymer non-arranged region of the two liquid-permeable sheets sandwiching the absorbent polymer, the absorbent polymer is difficult to leak from the absorbent sheet, and the absorbent sheet Since the rigidity of the folded portion (folded portion) is increased due to the four-layer structure, the width of the absorbent article D _W outwards due to the movement of the wearer's foot when the absorbent article is worn. Even if a force is applied from the side, the absorbent sheet is hardly deformed. As a result, an absorption area of body fluid such as urine discharged from the wearer can be secured, and good absorption performance as an absorbent article can be maintained.

  In the absorbent article of the present invention, the absorbent sheet (absorbing layer) is not limited to the above-described embodiment. For example, the absorbent material is sandwiched by folding one liquid-permeable sheet. Alternatively, after being held in the central region 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 region adjacent to the central region, Folding the region where the absorbent material is not disposed (absorbent material non-arrangement region) inward in the width direction and / or the longitudinal direction along a fold line extending in the longitudinal direction and / or the width direction You may produce by.

  Since the absorbent sheet produced in this way is on the lower side (non-skin facing surface side) of the top sheet that is a liquid-permeable sheet, when body fluid such as urine discharged from the wearer passes through the top sheet. Immediately, the absorbent polymer in the absorbent sheet absorbs odor along with body fluids such as urine. In addition, since the absorbent polymer swells at that time and the thickness of the absorbent sheet increases, even when the absorbent article is subjected to body pressure due to the weight of the wearer, the swollen absorbent polymer is pressure-buffered. Acting like a layer, the body fluid absorbed by the absorbent polymer is unlikely to return to the top sheet (liquid permeable layer). In addition, since the body fluid passes through the absorbent sheet by the action of gravity, it sufficiently secures an opportunity to contact the 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 range in the surface direction of the absorbent sheet, so that the body fluid comes into contact with the cyclodextrin from a wider area. Can be made. As a result, the deodorizing function of the cyclodextrin in the cyclodextrin-containing absorbent layer and the sustained release function of the active ingredient of the cyclodextrin complex can be exhibited more efficiently and effectively.

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 'region extending in the longitudinal direction D _L sandwiched (perfume coating region T _F, T' sheet 7, 7 _F) each or either one of the liquid fragrance is applied. By applying the liquid fragrance at such a position, the liquid fragrance may come into contact with the hot melt adhesive for fixing the absorbent sheet in the light incontinence pad 1 or the absorbent polymer. Therefore, the fragrance effect of the liquid fragrance can be exerted without deteriorating the adhesive strength of the adhesive or the absorption performance of the absorbent polymer. Further, since the liquid fragrance is applied at a position away from the cyclodextrin in the cyclodextrin-containing layer, the liquid fragrance is hardly adsorbed by the non-inclusion cyclodextrin, and the fragrance action of the liquid fragrance is steady. Can be demonstrated. The liquid fragrance used in the absorbent article of the present invention is not particularly limited, and any conventionally known liquid fragrance such as natural fragrance or synthetic fragrance can be used, but the absorbent article is applied to the human body. In consideration of the fact, it is preferable to use a plant-derived natural fragrance.

  In the absorbent article of the present invention, the position where the absorbent sheet (absorbing layer) is disposed is not particularly limited as long as it is between the topsheet and the cyclodextrin-containing layer. Another absorptive sheet can also be arrange | positioned in the position of the opposing 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 intermittently applied. For example, the adhesive G extends in the longitudinal direction of the liquid-permeable sheets 7 and 7 ′ and extends in the width direction. Even in the form of a plurality of lines arranged side by side, it may extend in the width direction of the liquid-permeable sheets 7 and 7 ′ and may be in the form of a plurality of lines arranged in the longitudinal direction, or a plurality of dots. It may be a form. In addition, the adhesive G is not specifically limited, For example, a hot-melt-type adhesive 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 ′ located on the non-skin facing surface side of the absorbent polymer 6 so as not to overlap each other in the thickness direction _DT. It is coated on each of 7 and 7 '. When the adhesive G is applied in this way, it becomes difficult to form a gap between the liquid-permeable sheet 7 and the liquid-permeable sheet 7 ′, and therefore, odor generated by holding 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 contact surface side of _A , the bodily fluid that has flowed out of the absorbent sheet SA can be absorbed by the cyclodextrin-containing layer described later together with the odor caused by the bodily 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 region where the adhesive G is intermittently applied, the surface (lower surface) on the non-skin facing surface side is further formed thereon. The liquid-permeable sheet 7 on which the adhesive G is intermittently applied is covered and bonded, and finally the absorbent polymer non-arranged region 12 is folded.
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 . In addition, although the range of this absorptive polymer non-existence area | region 13 can be suitably set according to the aspect of the pressing groove 14 formed, a predetermined dimension (for example, 2-5 mm) outward from the periphery of the said pressing groove It is preferable to set so that it may 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 absence region 13 is formed. The compressed groove 14 is in a state in which the top sheet 2 (liquid permeable layer), the absorbent sheet S _A (absorbing layer), the cyclodextrin-containing layer, and the back sheet (liquid impermeable layer) are overlapped, in plan view. It can form by performing a heat embossing from the skin opposing surface side of the said surface sheet 2 in the said absorptive polymer absence area | region 13. FIG. In addition, the high density part 15 whose fiber density is higher than the periphery is formed in the lower part (non-skin opposing surface side part) of the bottom part of the pressing groove 14 by pressing.
Since the said pressing groove is formed in an absorptive polymer non-existing area | region, the tearing of the surface sheet etc. which originates in an absorptive polymer interposing at the time of pressing can be prevented. Further, since a high density portion having a higher fiber density than the surroundings is formed in the lower portion of the bottom of the compressed groove, body fluid such as urine that has flowed into the compressed groove is capillaryized in the high density portion. In the cyclodextrin-containing layer located on the lower side (non-skin facing side) of the absorbent sheet S _A (absorbing layer). And adsorption of odor caused by the body fluid can be performed efficiently.
Moreover, the said pressing groove is formed so that it may reach from the skin opposing surface of the said surface sheet 2 to the inside of the cyclodextrin containing layer mentioned later, or the carrier sheet 5 'located in the back sheet side of a cyclodextrin containing layer. May be. When the compressed groove is formed in this way, urine and other body fluids discharged from the wearer can be transferred to the cyclodextrin-containing layer more quickly, and gaps and kinks occur between the layers of the absorbent article. It becomes difficult.
The topsheet (liquid permeable layer) may be provided with irregularities by embossing or the like in addition to the above-mentioned compressed groove. When such unevenness is imparted to the surface sheet, the contact area between the wearer's skin and the discharged body fluid can be reduced, so that skin irritation or the like hardly occurs.

In the light incontinence pad 1 of the present embodiment, the cyclodextrin-containing layer includes at least part of the cyclodextrin in the cyclodextrin-containing absorbent material layer 4 on the non-skin facing surface side of the cyclodextrin. 5 ′ (cyclodextrin holding sheet) and a hot melt type adhesive that extends continuously or intermittently along the longitudinal direction D _L of the light incontinence pad 1 (absorbent article), 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 A cyclodextrin arrangement region T _C extending in the longitudinal direction D _L and the width direction D _W , and both in the longitudinal direction D _L of the cyclodextrin arrangement region 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 application region” means a region in a plan view where the adhesive is applied, and specifically, the longitudinal direction D _L and the width direction D _W 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 The area surrounded by the virtual straight line in the width direction. 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 this 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, 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 The area surrounded by the virtual straight line in the width direction. 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 width direction D _W both edges in E _WC, E _'WC and the longitudinal direction D across the _L edge E _LC, E' of the show as _LC.

The cyclodextrin arrangement area T _C, from the viewpoint of improvement of contact efficiency between the fluid and the cyclodextrin discharged from the wearer, as shown in FIG. 3, in plan view, the longitudinal direction D _L of the absorbent article 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. When cyclodextrin arrangement area T _C is a region containing body fluid absorption region T _A of the absorbent article, body fluids such as urine discharged from the wearer tends to contact with cyclodextrin, deodorizing functions of the cyclodextrins And the sustained release function of the fragrance can be more reliably exhibited.

In the present embodiment, the light incontinence pad 1 is such that the cyclodextrin in the cyclodextrin-containing layer is partially bonded to the carrier sheet 5 ′ (cyclodextrin holding sheet) made of tissue or the like by the adhesive, and in plan view, the cyclodextrin said longitudinal direction D across the _L edges E _LC arrangement region T _C, E _'LC and opposite end edges E _WC in the width direction D _W, E' _WC is, each of the adhesive coating 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 the cyclodextrin is held on the carrier sheet 5 ′ by the adhesive, since the structure is located, the inside of the cyclodextrin-containing absorbent layer 4 is It is difficult for rhodextrin to move in the surface direction of the carrier sheet 5 ′, and in the portion where the cyclodextrin is not held on the carrier sheet 5 ′ by the adhesive, the cyclodextrin-containing absorbent layer 4 'although it is possible to move to a certain extent in the plane direction of both edges E _LC in the lengthwise direction D _L of cyclodextrin arrangement area T _C, E' cyclodextrin inner said carrier sheet 5 _LC and the width direction D _W The adhesives located on the outer sides of both end edges E _WC and E ′ _{WC in} FIG. 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, the light incontinence pad 1 of the present embodiment can steadily contact body fluids such as urine discharged from the wearer with the cyclodextrin, so that the deodorization function (odor component adsorption function) possessed by the cyclodextrin And the sustained release function of active ingredients such as fragrances and fragrances can be stably and sufficiently 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 Although it has a structure located on the inner side in the direction _DW , the absorbent article of the present invention is not limited to such a structure, and in the longitudinal direction D _L of the cyclodextrin arrangement region T _C. opposite edges E _LC, E _'LC or both edges E _WC in the width direction D _W, E' one of _WC is, both edges E _LH in the longitudinal direction of the adhesive coating regions T _H, E _'LH or 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 Uneven distribution can be sufficiently prevented.

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

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

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

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

（式中、Ｄは孔径（繊維間距離）、γは水銀の表面張力、θは接触角、Ｐは圧力を表す。）
４）得られた孔径Ｄの分布曲線から、孔径Ｄが０〜５００μｍである細孔の合計容積に対する、孔径Ｄが１〜３００μｍ（又は１０〜１５０μｍ）である細孔の容積の割合を算出する。
５）上記２）〜４）の操作を３回行い、得られた容積の割合の平均値を、１〜３００μｍ（又は１０〜１５０μｍ）の繊維間距離が全体に占める割合（％）とする。 Specifically, the interfiber distance of the fiber structure can be measured according to the following procedure using a mercury porosimeter.
1) A fiber structure, which is an object to be measured, is cut into 24 mm × 15 mm to produce a measurement sample. Three samples for measurement 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 each other, the structure of the fiber structure is gradually changed while the pressure applied to the mercury is gradually changed. The volume of mercury (ie, pore volume) pushed into the space between the fibers (ie, pores) is measured. The measurement is performed in an environment of 22 ° C. and 65% RH.
3) According to the following formula (1), the pore diameter D (μm) of the pores (that is, the interfiber distance of the fiber structure (μm)) is calculated, and the relationship between the pore diameter D and the pore volume is calculated as follows. Obtained as a distribution curve (differential / integral curve) of pore diameter D. The various measurement conditions in the following formula (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).

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

  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 or the like disposed on the non-skin facing 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, the cyclodextrin may be bonded to a liquid-permeable sheet disposed on the skin-facing surface side of the cyclodextrin, and the cyclodextrin may be bonded to the skin-facing surface side and non-skin of the cyclodextrin. You may respectively join with the liquid-permeable sheet arrange | positioned at both of the opposing surface side.

  Here, cyclodextrin is a cyclic oligosaccharide in which glucopyranose units are linked by α-1,4 bonds. Generally, a cyclodextrin unit containing six glucopyranose units in one molecule of cyclodextrin is α -Cyclodextrin, 7 are called β-cyclodextrin and 8 are called γ-cyclodextrin. Cyclodextrins can include other molecules (for example, active ingredients such as fragrances and deodorizing ingredients, odorous ingredients of excrement, etc.) inside the cyclic structure due to the presence of moisture, 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 is chemically modified (for example, methylated or acetylated) in addition to α-, β-, γ-cyclodextrin and / or a mixture thereof. Α-, β-, γ-cyclodextrin and / or a mixture thereof can be used. In addition, in the absorbent article of the present invention, “cyclodextrin” includes cyclodextrin retaining various active ingredients such as fragrances in addition to non-inclusion cyclodextrin.

  In the absorbent article of the present invention, the cyclodextrin is preferably a cyclodextrin holding an arbitrary fragrance such as a natural fragrance or a synthetic fragrance. Since the cyclodextrin holding such a fragrance has a function of gradually releasing the fragrance held in the cyclodextrin by contacting with body fluid such as urine discharged from the wearer, the released The fragrance can mask the odor of the body fluid and can adsorb odor components such as ammonia component contained in the body fluid by the non-inclusion cyclodextrin after releasing the fragrance. Therefore, when a cyclodextrin holding such a fragrance is used, odors generated from body fluids such as urine discharged from the wearer can be effectively suppressed.

  In addition, the fragrance | flavor hold | maintained in the said cyclodextrin is not restrict | limited in particular, Although arbitrary fragrance | flavors, such as a conventionally well-known natural fragrance | flavor and a synthetic | combination fragrance | flavor, can be used, an absorbent article shall be applied to a human body. In view of the above, it is preferable to use a plant-derived natural fragrance. Moreover, it is preferable that the fragrance | flavor made to hold | maintain to the said cyclodextrin is the same component as the above-mentioned liquid fragrance | flavor. When each fragrance is the same component, even if a body fluid such as urine discharged from the wearer comes into contact with the cyclodextrin holding the fragrance, and the fragrance is released from the cyclodextrin, it differs due to the respective fragrance. The scents are not mixed and the scent is not changed, and an unpleasant scent mixed with a plurality of scents is not generated. Further, when body fluid such as urine is discharged from the wearer, in addition to the fragrance by the liquid fragrance, the fragrance by the fragrance released from the cyclodextrin is generated, so the fragrance emitted from the absorbent article is enhanced. The odor when discharging the body fluid can be masked more strongly.

  Furthermore, in the absorbent article of the present invention, when a non-inclusion cyclodextrin (cyclodextrin not retaining a fragrance) and a cyclodextrin retaining a fragrance are used in combination, in addition to the effect of the cyclodextrin retaining the fragrance described above, In addition, since a certain amount or more of the non-inclusion cyclodextrin can be secured in the absorbent article, the adsorption action of the odor component by the non-inclusion cyclodextrin can be expressed more reliably, and the absorbency The deodorizing action of the article can be further increased. The non-inclusion cyclodextrin is preferably used in a proportion of 5 to 50% by mass with respect to the total amount of cyclodextrin used. In addition to cyclodextrin containing a fragrance, the cyclodextrin molecule and the fragrance are associated by various intermolecular forces and intermolecular interactions in addition to the inclusion complex in which the fragrance is included inside the cyclic structure of the cyclodextrin molecule. Including

  The form of cyclodextrin used in the absorbent article of the present invention is not particularly limited, and various forms can be used. Dispersibility, ease of handling during production, urine discharged from the wearer, etc. From the viewpoint of improving the contact efficiency with the body fluid, it is preferable to use it as a cyclodextrin powder having a particle size adjusted with a binder such as maltocyclodextrin, pullulan or gum arabic. The particle size of the cyclodextrin granular material is not particularly limited, and for example, about 5 μm to 300 μm, preferably 10 μm to 100 μm, can be used, but a carrier sheet (liquid permeable sheet) adjacent to the cyclodextrin It is particularly preferable to have a particle size larger than the inter-fiber distance of the fiber structure constituting the. When the particle size of the cyclodextrin powder is larger than the inter-fiber distance of the fiber structure constituting the carrier sheet, the cyclodextrin-containing layer passes between the constituent fibers of the fiber structure. Can be prevented, so that the deodorizing function of cyclodextrin and the sustained release function of active ingredients such as fragrances can be stably and sufficiently exerted.

In addition, the particle size of the above-mentioned cyclodextrin powder particles can be measured by a dry laser diffraction scattering method using a laser diffraction / scattering particle size distribution measuring device (for example, Microtrack MT3300EXII manufactured by Nikkiso Co., Ltd.). This dry laser diffraction scattering method is to measure the volume-based particle size distribution from the diffraction scattering pattern by irradiating the sample with laser light while dispersing the powder sample with air. In this specification, The median diameter (D50) obtained from the particle size distribution is used as the particle size of the granular material. Specific measurement conditions by the dry laser diffraction scattering method are as follows.
Number of measurements: 1 time Measurement time: 10 seconds Dispersion pressure: 100 kPa
Particle permeability: transmission Particle refractive index: 1.81
Particle shape: Non-spherical Solvent: Air
Solvent refractive index: 1.00
Measurement range: 0.243 to 2000 μm

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

  The cyclodextrin retaining the active ingredient (ie, cyclodextrin complex) gradually releases the active ingredient retained in the cyclodextrin by contact with moisture contained in body fluids such as urine discharged from the wearer. And has a function of expressing the action of the active ingredient. Such a cyclodextrin complex can be easily obtained by, for example, adding a fragrance or an active ingredient to a solution containing unincluded cyclodextrin and stirring and mixing. The presence or absence of inclusion of cyclodextrin can be confirmed by elemental analysis using X-rays.

  In the light incontinence pad 1 of the present embodiment, the cyclodextrin-containing layer includes a cyclodextrin-containing absorbent material layer 4 including the above-described cyclodextrin and a mixture of the absorbent polymer and the liquid-retaining substance (for example, pulp). Is sandwiched between carrier sheets 5 and 5 'composed of two liquid-permeable sheets (for example, tissues) positioned on the skin facing surface side and the non-skin facing surface side of the cyclodextrin-containing absorbent layer 4 And at least a part of the cyclodextrin in the cyclodextrin-containing absorbent layer 4 is located on the non-skin facing surface side of the cyclodextrin-containing absorbent layer 4 by a hot melt adhesive. It is held on the surface of the sheet 5 ′ (cyclodextrin holding sheet) on the skin facing surface side. 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 is subjected to the action of gravity to cause the cyclodextrin-containing absorbent layer. 4 is transferred to the lower part (non-skin facing surface side) of 4 and stays there, so that the bodily fluid remaining in the part is held on the skin facing surface side surface of the carrier sheet 5 ′ In which the cyclodextrin has a deodorizing function and a sustained release function of an active ingredient such as a fragrance can be more efficiently and effectively exhibited.

Such a cyclodextrin-containing layer can be prepared by using a hot-melt adhesive and a cyclodextrin-containing absorbent material layer 4 containing the above-described cyclodextrin and the mixture of the absorbent polymer and the liquid-retaining substance. It can be obtained by bonding to a single carrier sheet 5, 5 ′. Specifically, with the carrier sheet 5 ′ (cyclodextrin holding sheet) made of tissue or the like facing up on the surface facing the wearer's skin, the carrier sheet 5 ′ is stationary or while being 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 The carrier sheet 5 is disposed on the surface of the cyclodextrin-containing absorbent layer 4 on the skin-facing surface side, with or without an adhesive, to form the absorbent layer 4 and the cyclodextrin-containing absorbent layer 4. The above cyclodextrin-containing layer can be obtained through the carrier sheet arranging step.

  In the cyclodextrin arranging step, the method for arranging the cyclodextrin on the surface of the adhesive coated on the carrier sheet is not particularly limited, Even if it is arranged in a dispersed state in a dispersion medium (for example, polysiloxane oil, mineral oil, etc.), diols such as propylene glycol, dipropylene glycol, 1,3-butanediol, triethyl citrate, phthalate It may be arranged in the state of a solution dissolved in an ester organic solvent such as diethyl acid).

Further, in the cyclodextrin arrangement step, the cyclodextrin arrangement means is not particularly limited, and for example, any form such as a spray form, a plurality of streaks, and an omega form using a non-contact type or contact type coater. Can be applied. Even if cyclodextrin is applied without any gap in the cyclodextrin arrangement region T _C in a plan view, there are a plurality of regions in which the cyclodextrin does not exist in the cyclodextrin arrangement region T _C (that is, the cyclodextrin-free region). You may apply so that it may be formed. In particular, the cyclodextrin arrangement region T _C preferably includes an overlapping region that overlaps with the body fluid absorption region T _{A of the} absorbent article, and coating is performed so that a plurality of cyclodextrin-free regions are formed in the overlapping region. When such a cyclodextrin-free region is formed, the region functions as a passage for bodily fluids such as urine discharged from the wearer, so that the bodily fluid is inhibited by the cyclodextrin-containing absorbent layer. And can penetrate into 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 a deodorizing function.

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, absorbent performance, etc. For example, per absorbent article It can be 20 mg to 100 mg. Further, from the viewpoint of increasing the chance of contact between the body fluid such as urine discharged from the wearer and the cyclodextrin, the cyclodextrin has a body fluid absorption region T of the absorbent article in a plan view as shown in FIG. It is preferable to arrange in the region including _A.

  In the present embodiment, the cyclodextrin-containing absorbent material 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 has absorptivity containing cyclodextrin, but the cyclodextrin-containing absorbent layer is composed of cyclodextrin, absorbent polymer, and pulp. What contains a mixture is preferable. When the above-described cyclodextrin-containing absorbent layer is used in such an embodiment, a pulp aggregate causes the bodily fluid that has reached the cyclodextrin-containing absorbent layer to be circulated by capillary action in the cyclodextrin-containing absorbent layer. Since it acts to diffuse over a wide area in the dextrin-containing absorbent layer, it can absorb and retain the body fluid in a wide range of locations in the cyclodextrin-containing absorbent layer, and has excellent absorption performance as an absorbent article. The cyclodextrin-containing absorbent layer can absorb and retain the bodily fluid, so that even when the amount of bodily fluid such as urine discharged from the wearer is large, the cyclodextrin-containing The body fluid retained inside the absorbent layer is transferred to 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 contents of the absorbent polymer and the liquid retaining substance are not particularly limited, but include 60 parts by mass or less and 40 parts by mass or more per 100 parts by mass in total. It is preferable. In the cyclodextrin-containing absorbent material layer, when the content of the absorbent polymer is 60 parts by mass or less, there is a tendency that there is a body fluid that is not absorbed by the absorbent polymer. Therefore, the amount and contact time of the body fluid that can contact the cyclodextrin When the content of the liquid retentive substance is 40 parts by mass or more, the bodily fluid is more easily diffused by the capillary phenomenon of the liquid retentive substance. The contact can be made in a wide range.

  In the light incontinence pad 1 of the present embodiment, the cyclodextrin-containing absorbent layer 4 includes at least a part of the cyclodextrin in the cyclodextrin-containing absorbent layer 4 by the hot-melt adhesive. In the absorbent article of the present invention, the adhesive for joining the cyclodextrin and the cyclodextrin holding sheet is not particularly limited, and any conventionally known adhesive 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, Arranged in a plurality of rows 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 penetrate into the non-skin facing surface side in the direction _{DT and} the body fluid permeates from the skin facing surface side to the non-skin facing surface side of the cyclodextrin holding sheet. 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 osmosis while diffusing in the surface direction of Door can be. As a result, the absorbent article of the present invention can exhibit the deodorizing function and the sustained-release function of the fragrance that cyclodextrin has more effectively and more efficiently while having 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, and for example, a linear solid line such as a straight line, a wave shape, a spiral shape, a zigzag shape, and an omega shape in plan view. Or it can apply in arbitrary forms, such as broken lines; dot 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 (So-called solid coating) can be applied onto the cyclodextrin holding sheet. When the adhesive is applied in such a solid coating form, the adhesive enters between the fibers of the fiber structure constituting the cyclodextrin holding sheet and fills the voids in the fiber structure. The cyclodextrin held by the cyclodextrin holding sheet does not easily flow out of the cyclodextrin-containing layer through the liquid-permeable sheet, and is difficult to break when worn by increasing the strength of the liquid-permeable sheet. In addition, 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 and the perfume sustained-release function of the cyclodextrin in the cyclodextrin-containing layer are further improved. Stable and more reliable. In the absorbent article having a structure in which cyclodextrin is bonded to a sheet located on the skin-facing surface side of the cyclodextrin as in the second embodiment described later, the adhesive is retained as described above. If the sheet is applied to the sheet, the liquid permeability of the cyclodextrin holding sheet is inhibited by the adhesive, 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 desired adhesive strength, liquid permeability, deodorizing performance, etc. 40 g / ^{m 2,} preferably 2 to 20 g / ^{m 2,} more preferably be a 4~10g / ^{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 a light incontinence pad according to the first embodiment of the present invention and a plan view of the light incontinence pad according to the second embodiment of the present invention. FIG. 4 is an end view of a cross section taken along the line II-II ′ of FIG. 1 in the light incontinence pad of the second embodiment of the present invention. The light incontinence pad 1 according to the second embodiment is a cyclodextrin layer 4 ′ in which a layer containing cyclodextrin (in the first embodiment, a cyclodextrin-containing absorbent layer 4) is composed only of cyclodextrin. In addition, 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 top sheet 2 and the cyclodextrin layer 4 ′. And the liquid permeable sheet 7 ′ holds the absorbent material such as the absorbent polymer 6 on the surface opposite to the holding surface and is disposed on the skin facing surface side of the absorbent material. 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 The same as in the above-described embodiment, except that the coating 10 is coated from the non-skin facing surface side (that is, the cyclodextrin-containing layer includes the cyclodextrin layer 4 ′ and the cyclodextrin-coated sheet 10). It has the composition of.

  In the light incontinence pad 1 of the present embodiment, since the layer containing cyclodextrin is composed only of cyclodextrin, the body fluid such as urine discharged from the wearer can increase the chance of contact with the cyclodextrin. In addition, the thickness of the cyclodextrin-containing layer can be reduced, and any product design such as thinning according to the amount of absorption can be realized.

Further, in the light incontinence pad 1 of the present embodiment, at least a part of the cyclodextrin is on the non-skin facing surface side of the liquid-permeable sheet 7 ′ located between the top sheet and the cyclodextrin layer 4 ′. The liquid permeable sheet 7 ′ is held on the holding surface and holds the absorbent material such as the absorbent polymer 6 on the surface opposite to the holding surface (that is, the surface facing the skin). to, the liquid-permeable sheet 7 disposed on the skin facing side of the absorbent material to form the absorbent sheet S _{a (the} absorption layer). 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 The body fluid can be gradually infiltrated into and contacted with the cyclodextrin held on the non-skin facing surface side of the liquid-permeable sheet 7 'in a wider range. As a result, the deodorizing function of cyclodextrin and the sustained release function of active ingredients such as fragrances can be exhibited more efficiently and more effectively.

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 A cyclodextrin layer 4 ′ is formed by disposing cyclodextrin on the surface of the adhesive, and a cyclodextrin-coated sheet 10 made of a liquid-permeable sheet is further coated on the 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 do.

  Further, the light incontinence pad 1 of the present embodiment is such that the cyclodextrin held in the liquid permeable sheet 7 ′ is covered from the non-skin facing surface side by the cyclodextrin coated sheet 10 made of a liquid permeable sheet such as tissue. Therefore, the cyclodextrin can be steadily held on the holding surface of the liquid-permeable sheet 7 ′, and the deodorizing function of the cyclodextrin and the sustained release function of active ingredients such as fragrances can be stably exhibited. Can be made.

  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. The cyclodextrin-coated sheet 10 can be brought into contact with the cyclodextrin located on the skin facing surface side in a wide range. In addition, when using the above-mentioned fiber structure as the said cyclodextrin coating sheet 10, the said fiber structure is a grade which cyclodextrins do not pass between the constituent fibers of a fiber structure (for example, the cyclodextrin granular material mentioned above). It is preferable to have an interfiber distance (smaller than the particle size).

  The present invention can be applied to various absorbent articles such as panty liners, sanitary napkins, disposable diapers, etc., 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 above-described embodiments, and can be appropriately combined and changed without departing from the object and spirit of the present invention. In this specification, ordinal numbers such as “first” and “second” are for distinguishing the items with the ordinal numbers, and mean the order, priority, importance, etc. of each item. Not what you want.

1 Light incontinence pad (absorbent article)
2 Top 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 facing surface side liquid permeable sheet 7 'Non skin facing surface side liquid permeable sheet 8, 8' Side gather sheet 9, 9 'Threaded elastic member 10 Cyclodextrin-coated sheet 11 Absorbing polymer arrangement region 12 Absorbing polymer non- placement region 13 absorbent polymer absent region 14 compressed groove 15 high density portion G adhesives T _A body fluid absorbent region T _C cyclodextrin arrangement area T _H adhesive coated region T _F, T _'F perfumes arrangement region

Claims (8)

An absorbent article comprising a liquid-permeable layer, a liquid-impermeable layer, an absorbent layer located between these layers, and a cyclodextrin-containing layer located between the absorbent layer and the liquid-impermeable layer. ,
The absorbent layer has a longitudinal direction, a width direction, and a thickness direction. The absorbent layer, a liquid-permeable sheet that holds the absorbent polymer, and the absorbent polymer are fixed to the liquid-permeable sheet. An adhesive, and a fragrance present in an end region in the width direction of the absorbent layer ,
The absorbent layer is formed by sandwiching the absorbent polymer in the thickness direction by the liquid permeable sheet, and the absorbent polymer arrangement region present in the center region in the width direction, and the absorption An absorbent polymer non-arrangement region adjacent to the width direction in the width direction, and the liquid-permeable sheet extends inward in the width direction by a fold line extending in the longitudinal direction in the absorbent polymer non-arrangement region. The fragrance is formed in the region between the fold line and the widthwise end of the liquid permeable sheet and is sandwiched in the thickness direction by the liquid permeable sheet. Exists,
The adhesive is intermittently applied to the liquid permeable sheet and is applied to the liquid permeable sheet located on the skin-opposing surface side of the absorbent polymer; It is applied to the liquid permeable sheet so that the position applied to the liquid permeable sheet located on the skin facing surface side does not overlap with each other in the thickness direction,
The absorbent article.   The absorptive article according to claim 1 in which said absorption layer does not contain pulp fiber. The absorbent layer has an absorbent polymer non-existing region where the absorbent polymer is not locally present in the absorbent polymer arrangement region in a plan view, and the absorbent article includes the liquid permeable layer. It has a pressing groove which extends from the skin facing surface to at least the inside of the absorption layer, and the pressing groove is formed in the absorbent polymer-free region in a plan view. Absorbent articles. The said cyclodextrin content layer is an absorptive article as described in any one of Claims 1-3 containing the cyclodextrin complex which consists of cyclodextrin which hold | maintained the fragrance | flavor, and the cyclodextrin which does not hold | maintain the said fragrance | flavor. The absorptive article according to any one of claims 1 to 4 in which said cyclodextrin content layer contains cyclodextrin granular material containing at least one of cyclodextrin and a cyclodextrin complex, and an absorptive material. . The absorptive material is a mixture of an absorptive polymer and a liquid retentive substance, and contains the absorptive polymer and the liquid retentive substance per 60 parts by mass in total of 60 parts by mass or less and 40 parts by mass or more, respectively. The absorbent article according to claim 5. The cyclodextrin-containing layer further includes a cyclodextrin holding sheet that is located between the cyclodextrin powder and the absorbent material and the liquid-impermeable layer and holds at least a part of the cyclodextrin powder. The absorptive article according to claim 5 or 6 containing. The cyclodextrin-containing layer is located between the cyclodextrin powder containing at least one of cyclodextrin and a cyclodextrin complex, the cyclodextrin powder and the liquid-impermeable layer, and the cyclodextrin powder. The absorptivity as described in any one of Claims 1-4 including the cyclodextrin coating sheet | seat which coat | covers a granular material, and at least one part of the said cyclodextrin granular material is being fixed to the said absorption layer. Goods.

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