TWI701022B - Absorbent articles - Google Patents

Abstract

The present invention is to provide an absorbent article that can efficiently exhibit the deodorizing function of cyclodextrin and the sustained release function of active ingredient of cyclodextrin complex.

The absorbent article (1) of the present invention includes: a liquid-permeable layer (2); a liquid-impermeable layer (3); an absorbent layer positioned between the two layers; and the absorbent layer and the liquid-impermeable layer The cyclodextrin-containing layer between the penetrating layers (3).

Description

Absorbent articles

The present invention relates to an absorbent article with odor suppression 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. The body fluid absorbed by the absorbent body of the absorbent article usually emits an uncomfortable odor, and research on absorbent articles that can suppress the odor caused by such body fluids has been studied.

For such an absorbent article, Patent Document 1 discloses that a cyclodextrin complex containing cyclodextrin and at least three components complexed with the aforementioned cyclodextrin is arranged closer to the body than the absorbent core The surface layer of the absorbent article.

[Advanced Technical Literature] [Patent Literature]

[Patent Document 1] JP 2013-545587 A

However, body fluids such as urine discharged from the wearer immediately permeate through the layer (for example, surface sheet, etc.) near the surface of the body of the absorbent article. Therefore, the absorbent article disclosed in Patent Document 1 is a cyclodextrin And the cyclodextrin complex is arranged in the layer of the absorbent article near the surface of the body, the contact time of the aforementioned cyclodextrin and the aforementioned cyclodextrin complex with the aforementioned body fluid may not be sufficiently obtained, and the full performance may be insufficient. The deodorizing function of cyclodextrin and the slow-release function of the active ingredient possessed by cyclodextrin complex are concerned.

Herein, the present invention aims to provide an absorbent article that can efficiently and fully exhibit the deodorizing function of cyclodextrin and the sustained release function of the active ingredient of the cyclodextrin complex.

The absorbent article of the present invention includes: a liquid-permeable layer; a liquid-impermeable layer; an absorbent layer located between the two layers; and a cyclodextrin located between the aforementioned absorbent layer and the aforementioned liquid-impermeable layer Floor.

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, if body fluids such as urine discharged from the wearer pass through the liquid permeable layer and are absorbed in the absorbent layer, The body fluid is accumulated on the lower part of the absorbent layer (that is, the part on the side of the cyclodextrin-containing layer) by gravity, and the accumulated body fluid At least one of the cyclodextrin and the cyclodextrin complex contained in the cyclodextrin-containing layer is contacted for a long time with a wide contact area. As a result, the deodorizing function of cyclodextrin and the sustained release function of active ingredients (fragrance held by cyclodextrin, deodorizing ingredients, etc.) of the cyclodextrin complex can be efficiently and fully utilized. In addition, in the absorbent article of the present invention, the "cyclodextrin-containing layer" refers to a layer containing at least one of a cyclodextrin powder or a cyclodextrin complex compound described later.

According to the present invention, it is possible to provide an absorbent article that has a cyclodextrin function with high efficiency and can fully perform.

1: Light incontinence pad (absorbent article)

2: Surface sheet (liquid permeable layer)

3: Inside sheet (liquid impermeable layer)

4: Cyclodextrin contains absorbent layer

4’: Cyclodextrin layer

5: slide

5’: Slide

6: Absorbent polymer (absorbent material)

7: Liquid permeable sheet (liquid permeable sheet on the side facing the skin)

7’: Liquid permeable sheet (non-skin facing side liquid permeable sheet)

8, 8’: Side folded sheet

9, 9’: Silky elastic member

10: Cyclodextrin coated sheet

11: Absorbent polymer configuration area

12: Absorbent polymer non-configuration area

13: Non-existent area of absorbent polymer

14: Press the groove

15: High density part

40: Cyclodextrin containing layer

45: Cyclodextrin containing layer

G: Adhesive

T _A : body fluid absorption area

T _C : Cyclodextrin configuration area

T _H : Adhesive coating area

T _F , _T'F : Spice configuration area

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 an expanded state.

Fig. 2 is an end view 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 area, a cyclodextrin arrangement area, an adhesive application area, and a fragrance application area in the light incontinence pad of Fig. 1.

Fig. 4 is an end view taken along the line II-II' of Fig. 1 in the light incontinence pad of the second embodiment of the present invention.

[Forms for implementing invention]

Hereinafter, a suitable embodiment of the absorbent article of the present invention will be described in detail with reference to the drawings.

Figure 1 is a view from the surface sheet (liquid permeable layer) side (ie, the wearer’s skin facing side) in the thickness direction _DT in the unfolded state, which will be the first embodiment or the second embodiment of the present invention A top view of the light incontinence pad 1 of the present invention; FIG. 2 is an end view of the light incontinence pad 1 of FIG. 1 along the line II-II' of 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 fragrance application area in the light incontinence pad of Fig. 1. In addition, in this specification, if there is no particular emphasis, only the "expanded state viewed in the thickness direction from the liquid-permeable layer side" is referred to as "plan view."

As shown in Figures 1 and 3, the light incontinence pad 1 of the first embodiment of the present invention has a rectangular shape with long sides extending in the long direction D _L and short sides extending in the width direction D _W when viewed in plan. Both ends in the longitudinal direction have an arc-shaped bulging shape. In addition, in the present invention, the shape of the absorbent article is not limited to such a shape, as long as the length dimension in the longitudinal direction D _L is longer than the width dimension in the width direction D _W , it can be made into any lengthwise shape. Shape (for example, rectangle, oval, gourd, etc.).

In the present specification, it may be a direction towards the length _L extends in the longitudinal direction D of the center axis _L of the absorbent article referred to as C direction inner side in the width direction, from the central axis C may be remote from the _L The direction of is called the direction of the outer side in the width direction. Similarly, the direction toward the central axis C _W extending in the width direction D _W of the absorbent article can be referred to as the inward direction in the longitudinal direction, and the direction away from the aforementioned central axis C _W can be referred to as the longitudinal direction In the direction of the outer side. In addition, in the thickness direction D _{T of the} absorbent article, the direction toward the side facing the wearer's skin (skin facing side) may be referred to as the direction of the skin facing side, and the direction may be combined with The direction of the wearer's skin facing the opposite side of the facing side (non-skin facing surface side) is called the direction of the non-skin facing surface side.

The absorbent article of the present invention, is shown in Figure 3, in a plan view: a liquid absorbing region T _A, which is D in the width direction _{W is} extending across the absorbent article in the longitudinal direction D _L of the extension of the center axis C _L and D _L in the longitudinal direction extending across the width direction of the absorbent article D _W C _W central axis line extended; and region other than the region of the bodily fluid absorbent. Here, "body fluid absorption area" refers to the area corresponding to the body fluid excretion position of the wearer when the wearer installs the absorbent article. The type of absorbent article, specifically, is based on the discharge from the wearer Types of body fluids such as urine, stool, and menstrual blood; age and sex of the wearer; the position and area where the excretory opening of the wearer abuts; the structure of the absorbent layer, etc., are appropriately set according to the type of absorbent article. In addition, the liquid absorbing region T _A, typically having a length _L in the longitudinal direction over the entire length of the longitudinal direction D of about 1/3 of the absorbent article, and about 1/3 of the entire length of the absorbent article in the width direction _{W is} D above The width direction length. In addition, the "region other than the body fluid absorption region" refers to the region other than the body fluid absorption region extending from the body fluid absorption region to the outer side of the longitudinal direction and the width direction. The region includes: no The area that absorbs the body fluid discharged from the wearer and the area that is not the area corresponding to the body fluid discharge position of the wearer can absorb the body fluid discharged from the wearer.

The light incontinence pad 1 of the first embodiment of the present invention, as shown in FIG. 2, is composed of a surface sheet 2 as a liquid permeable layer, which is located on the wearer’s skin facing side in the thickness direction D _T , Formed by any liquid-permeable sheet such as liquid-permeable nonwoven fabric, plastic film, etc.; the back sheet 3, which is the liquid-impermeable layer, is located on the non-skin facing side of the wearer and is made of liquid-impermeable any non-woven fabric, plastic film or the like without forming a liquid permeable sheet; S _a sheet as an absorbent absorbing layer, which is located between the inside surface of the sheet 2 and the sheet 3, and with two liquid permeable sheet 7 , 7 '(e.g., an air-woven fabric) clamped absorbent material comprising an absorbent polymer at least 6; cyclodextrin-containing layer 45, which is located between the absorbent sheet and the inside sheet S _a 3, and with Two carrier sheets 5, 5'formed of liquid-permeable sheets (e.g. tissue paper, etc.) sandwiching a cyclodextrin-containing absorbent material containing a mixture of cyclodextrin, absorbent polymer, and liquid-retaining material (e.g., pulp, etc.) Layer 4; a pair of side-folded sheets 8, 8'extending in the longitudinal direction, which are folded from the front sheet to the inner sheet sandwiched from the outer sides of the width direction And it is joined to the above-mentioned laminate, and the edge of the inner side in the width direction is formed as a free end; and the linear elastic members 9, 9'are located in the pair of side folds In the vicinity of the folds of the edge sheets 8, 8', two of each are formed by various members of each sheet of the pair of side folded sheets.

In the present embodiment, those functions, the absorbent sheet S _A (absorption layer), having a long absorption of urine discharged from the body fluids repackage and the like to be held is not particularly limited, but is desirable to use a two Liquid-permeable sheets such as hot-air nonwoven fabrics sandwich an absorbent material containing at least the absorbent polymer 6 described above. Here, the "absorbent polymer" is a polymer that can absorb and retain water, and examples thereof include polymers with a three-dimensional network structure that appropriately crosslinks water-soluble polymers. Specifically, starch-based, acrylic-based, and amino acid-based particulate or fibrous polymers can be cited. Such an absorbent polymer absorbs not only water but also odors formed by ammonia components and the like, so it can also exhibit a deodorizing effect.

Moreover, as for the aforementioned absorbent polymer, a deodorizing component-containing absorbent polymer or the like in which absorbent polymer particles and an arbitrary deodorizing component are integrated can also be suitably used. In addition, the deodorizing component refers to a component that can eliminate odors caused by such 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, copper, etc., attached to the surface of activated carbon, alumina, etc. A bactericidal deodorizing component such as a complex of a fourth-grade ammonium salt compound having a bactericidal effect; or a combination of two or more of these deodorizing components.

In addition, if the urea contained in urine is decomposed by the so-called urease enzyme possessed by bacteria in the urine, it will generate ammonia components and produce ammonia odor. However, the above-mentioned bactericidal deodorizing components are used for the bacteria in the urine. Since it functions as a fungicide, it is an advantageous deodorizing ingredient in that it inhibits the decomposition of urea due to the above-mentioned urease and prevents the generation of ammonia odor. In addition, the effect of preventing the generation of such ammonia odor can also be obtained when a bactericide having the same bactericidal effect as the above-mentioned bactericidal deodorizing component is used, so for example, by spraying the absorbent polymer particles containing An aqueous solution of such a bactericide can obtain absorbent polymer particles and a bactericide integrated with a bactericide containing an absorbent polymer, which can also be suitably used in the present invention.

The deodorizing component contains an absorbent polymer, and can be obtained by mixing and integrating absorbent polymer particles with the deodorizing component. In addition, the aforementioned deodorant component contains an absorbent polymer. After the absorbent polymer particles are added to water to form a hydrogel state, the absorbent polymer in the hydrogel state is mixed with the aforementioned deodorant component to make it Integration is also available.

In the present invention, the absorbent material in the absorbent sheet S _A (absorption layer) may be used, as long as those containing the absorbent polymer is not particularly limited, except that the absorbent polymer may also comprise a A liquid-retaining substance formed from water-absorbent fibers such as pulp. When the absorbent material contains the absorbent polymer and the water-absorbent fiber, the content of the absorbent polymer is per unit area of the absorbent layer, and the mass of the water-absorbent fiber is in the range of 10 to 90%. In addition, in the present invention, the so-called body fluids such as urine discharged by the wearer efficiently contact the cyclodextrin on the non-skin facing side of the absorbent sheet containing the cyclodextrin in the absorbent material layer. From a viewpoint, the aforementioned absorbent material is preferably one that uses a liquid-retaining substance that does not contain pulp or the like.

Further, in the liquid the absorbent sheet S _A (absorption layer) may be used as long as it is permeable sheet a liquid permeable sheet resistance is not particularly limited, for example, a jet of non-woven, spun-bonded, stacked nonwoven fabric (e.g., SBS non-woven Etc.), hydrophilic non-woven fabrics such as tissue paper. From the viewpoint of liquid permeability, the aforementioned liquid-permeable sheet is preferably an air-flow nonwoven fabric.

In light incontinence pad 1 according to the present embodiment, the absorbent sheet S _A, is accomplished by the above-described absorbent polymer 6 (absorbent material) and then coated arranged in two liquid-permeable sheet agent G The two liquid-permeable sheets 7, 7'between the two liquid-permeable sheets 7, 7'have a central region in the width direction D _W so that the absorbent polymer is arranged in the region (absorbent polymer arrangement region 11) The areas adjacent to both sides of the width direction D _W will not contain the absorbent polymer. After the absorbent polymer is sandwiched by the two liquid permeable sheets 7, 7', there will be no arrangement The regions of the absorbent polymer (absorbent polymer non-arrangement regions 12) on both end edges in the width direction _DW of the two liquid-permeable sheets 7, 7'respectively extend along the length The folding line in the direction D _L is folded toward the inner side of the width direction D _W (so-called wrapping) and can be produced. In addition, when the absorbent polymer non-arrangement regions 12 on both end edges in the width direction of the two liquid-permeable sheets 7, 7'are folded toward the inner side of the width direction, they may also face Fold in either direction on the skin facing side or the non-skin facing side. By folding and sandwiching the absorbent polymer non-arrangement regions of the two liquid-permeable sheets in this way, in addition to preventing the absorbent polymer from leaking from the absorbent sheet, it can also make the absorbent The folded part (folding part) of the sheet becomes a 4-layer laminated structure to increase the rigidity. Therefore, even when the absorbent article is used, it changes from the width of the absorbent article due to the movement of the wearer’s feet. With the force applied from the outer side of the D _W , the aforementioned absorbent sheet is still difficult to deform. As a result, the absorption area of body fluids such as urine discharged from the wearer can be secured, and the good absorption performance as an absorbent article can be maintained.

In addition, in the absorbent article of the present invention, the absorbent sheet (absorbent layer) is not limited to the above-mentioned aspect. For example, the absorbent material may be folded and sandwiched by one liquid-permeable sheet. Or is a method surrounded by three or more liquid-permeable sheets, and after being held in the central region in the width direction and/or the longitudinal direction of the liquid-permeable sheet, the area adjacent to the central region, That is, the area where the absorbent material is not arranged (absorptive material non-arrangement area), along the fold line extending in the length direction and/or the width direction toward the inside of the width direction and/or the length direction Fold on the side to make it.

The absorbent sheet produced in this way is located on the lower side (non-skin facing side) of the surface sheet that is the liquid permeable sheet, so if body fluids such as urine discharged from the wearer pass through the surface sheet, The absorbent polymer in the absorbent sheet immediately absorbs odors together with body fluids such as urine. In addition, the absorbent polymer swells at this time, and the thickness of the absorbent sheet increases. Therefore, even if the absorbent article is subjected to body pressure caused by the weight of the wearer, the absorbent polymer after swelling will behave like The pressure buffer layer functions like a pressure buffer layer, making it difficult for body fluids absorbed by the aforementioned absorbent polymer to flow back to the surface sheet (liquid permeable layer). In addition, since the body fluid passes through the absorbent sheet due to gravity, it is possible to sufficiently ensure that the cyclodextrin on the non-skin facing side of the absorbent sheet contains the cyclodextrin in the absorbent layer. Also, if the body fluid stays in the body for a long time In the retractable sheet, the body fluid will spread to a wide area in the surface direction of the absorbent sheet, so the body fluid can be brought into contact with the cyclodextrin from a wider area. As a result, the aforementioned cyclodextrin can be made to contain the deodorizing function of the cyclodextrin in the absorbent material layer, and the slow-release function of the active ingredient of the cyclodextrin complex compound can be made more efficient and more effective. Its play.

And, FIG. 2 and FIG. 3, a light incontinence pad 1 according to the present embodiment, the folded portions are at both ends in the edge side of the absorbent sheet S _A D _W is the width direction is, in extending 2 is the liquid permeable sheet 7,7 _'L D region of the longitudinal direction of the sandwich (fragrance application region T _F, T' _F) according to any one of the individual or coated with a liquid fragrance. By applying the liquid fragrance to such a position, the liquid fragrance will not come into contact with the hot-melt adhesive or the absorbent polymer used to fix the absorbent sheet in the light incontinence pad 1. Therefore, the adhesive force of the aforementioned adhesive or the absorption performance of the aforementioned absorbent polymer will not be reduced, and the aroma effect caused by the aforementioned liquid fragrance can be exerted. Furthermore, by coating the liquid fragrance at a position away from the cyclodextrin in the aforementioned cyclodextrin-containing layer, the liquid fragrance is difficult to be adsorbed by the non-clad cyclodextrin, and the fragrance of the aforementioned liquid fragrance can be improved. The role does play. In addition, 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 if it is considered that the absorbent article is suitable for humans , It is ideal to use natural fragrance from plants.

In the absorbent article of the present invention, the aforementioned absorbent The position of the sheet (absorbent layer) is not particularly limited as long as it is located between the aforementioned surface sheet, that is, the cyclodextrin-containing layer. For example, it may also be placed on the non-skin facing side of the cyclodextrin-containing layer. Absorbent sheet.

As shown, a light incontinence pad patterns 12 of the present embodiment, the absorbent polymer arranged in the region S _A is the absorbent sheet, the absorbent polymer located in the skin facing side of the liquid-permeable sheet 7 , The liquid-permeable sheet 7'positioned on the non-skin facing surface of the absorbent polymer 6 is intermittently coated with the adhesive G for fixing the absorbent polymer. The coating form of the adhesive G is not particularly limited as long as the adhesive G is applied intermittently. For example, it may extend in the longitudinal direction of the liquid-permeable sheets 7, 7'and be arranged in the width direction. It can also be in the form of a plurality of lines extending in the width direction of the liquid-permeable sheet 7, 7'and arranged in the longitudinal direction; or it can be in the form of a plurality of dots. In addition, the adhesive G is not particularly limited, and, for example, a hot-melt adhesive can be used.

The absorbent polymer arranged in the region of the absorbent sheet S _A, G so adhesive is intermittently applied to the case, the discharged lighter incontinence pad 1 repackage the body fluid such as urine does not pass through the coating liquid part G of the adhesive sheet 7, an absorbent in the absorbent polymer is fixed to the inside of the absorbent sheet S 6 _a is absorbed, so it will not hinder the absorbent sheet S _a, can inhibit the absorptive sheet S _a The movement of the absorbent polymer 6 in.

In addition, as shown in FIG. 2, the adhesive G in the light incontinence pad 1 of this embodiment is an adhesive applied to the liquid-permeable sheet 7 on the side facing the skin of the absorbent polymer 6. The position of the agent G and the position of the adhesive G applied to the liquid-permeable sheet 7'on the non-skin facing side of the absorbent polymer 6 are applied so as not to overlap each other in the thickness direction _DT In each of the liquid-permeable sheets 7, 7'. When the adhesive G is applied in this way, it is difficult to form a gap between the liquid-permeable sheet 7 and the liquid-permeable sheet 7'. Therefore, by retaining body fluids such as urine in the gap, the occurrence of generated odor can be reduced. Furthermore, there is no absorbent polymer in the absorbent sheet S _A 6 absorbed body fluids such as urine, because the agent portion may then G permeable sheet 7 'is not coated by the fluid out of the absorbent sheet S _a non-skin contact surface side, it can be described later together with the cyclodextrin in the odor absorbing layer containing the absorbent sheet S _a flowing fluid caused by the causes of the bodily fluid.

Light incontinence pad according to the present embodiment, an absorbent sheet S _A 1, for example the skin in the liquid permeable sheet 7 'of the surface of the opposite side (above), except a region to be described later is formed outside of the press grooves 14, The adhesive G is applied intermittently, the absorbent polymer is placed in the area where the adhesive G is intermittently applied, and then the surface (lower surface) on the non-skin facing side is applied intermittently. The liquid-permeable sheet 7 of the cloth adhesive G is joined together, and finally obtained by folding the above-mentioned absorbent polymer non-arrangement area 12.

The absorbent sheet thus obtained S _A in a plan view, in a region where the liquid-permeable sheet 7 'of the grooves 14 of the press, since there is no adhesive coating fixing the absorbent polymer with G 6, so that the the absorbent sheet S _a, having an absorbent polymer in the absorbent polymer 11 disposed within the region 6 does not exist locally absent area 13 of the absorbent polymer. In addition, the range of the absorptive polymer non-existent region 13 can be appropriately set in accordance with the form of the press slat 14 formed, but it is set to a predetermined size (for example, 2~5 mm) from the periphery of the press slat 14 The extension of the foreign party is ideal.

Further, light incontinence pad 1 according to the present embodiment, the surface sheet having the facing surface of skin 2 to at least the interior of the absorbent sheet S _A press grooves 14, the press grooves 14 are formed in a plan view In the aforementioned absorptive polymer non-existing area 13. The squeeze groove 14 is a surface sheet 2 (liquid permeable layer) that can be formed into a surface sheet 2 (liquid permeable layer) by applying heat embossing from the skin facing side of the surface sheet 2 in the absorptive polymer non-existent area 13 in a plan view sheet S _a (absorption layer), and the back sheet layer comprising a cyclodextrin (liquid impermeable layer) stacked state. In addition, in the lower part of the bottom of the squeeze groove 14 (the non-skin facing surface side part), a high-density part 15 having a higher fiber density than the surroundings is formed by squeezing.

The aforementioned press grooves are formed in the non-existent area of the absorbent polymer, so that the breakage of the surface sheet caused by the intervening of the absorbent polymer during pressing can be prevented. In addition, since a high-density part with a higher fiber density than the surrounding is formed on the lower part of the bottom of the press slat groove, the body fluids such as urine flowing into the press slat can be further enhanced by the capillary phenomenon of the high-density part. rapidly down side (non-skin facing surface side), while the lower side may be a cyclodextrin (for non-skin facing side) of the absorbent sheet S _a (absorption layer) containing layer is performed more efficiently The absorption of the aforementioned body fluids and the absorption of the odor caused by the body fluids.

In addition, the pressing groove may be formed from the skin-facing surface of the surface sheet 2 to the inside of the cyclodextrin-containing layer described later; or in place The carrier sheet 5'on the back sheet side of the cyclodextrin-containing layer is formed. If the squeeze groove is formed in this way, in addition to allowing body fluids such as urine discharged from the wearer to quickly migrate to the cyclodextrin-containing layer, gaps and distortions are unlikely to occur between the layers constituting the absorbent article.

In addition, the surface sheet (liquid permeable layer) may be provided with irregularities such as embossing in addition to the aforementioned press grooves. If such irregularities are provided on the surface sheet, the contact area between the wearer's skin and the discharged body fluids can be reduced, so skin rashes and other cloth are likely to occur.

In the light incontinence pad 1 of this embodiment, the cyclodextrin-containing layer is formed by bonding at least a part of the cyclodextrin in the cyclodextrin-containing absorbent layer 4 to the non-skin facing surface of the cyclodextrin side of the carrier sheet 5 '(sheet holding cyclodextrin), and comprises a light incontinence pad 1 along (absorbent article) D _L of the longitudinal direction continuously or intermittently extend the hot-melt adhesive, and further, The aforementioned cyclodextrin-containing layer has: when viewed from a plan view, an adhesive coating area T _H extending in the longitudinal direction D _L and the width direction D _W of the light incontinence pad 1 and an area where the cyclodextrin is arranged And it is the cyclodextrin arrangement region T _C that extends in the longitudinal direction D _L and the width direction D _W , and the end edges E _LC and E _LC in the longitudinal direction D _L constituting the cyclodextrin arrangement region T _{C are} E 'and both edges of the _LC in the width direction D _W E _WC, E' _WC, respectively than that of the both edges and then E _LH application regions of the T _H D _L in the longitudinal direction, E _'LH E _WH both edges and the width direction of D _W, E _'WH is located more near the inner side in the longitudinal direction and the width direction D _L D _W.

Here, the "adhesive application area" in this specification means the area where the adhesive is applied in a plan view, specifically, in the longitudinal direction _DL and the width direction D of the absorbent article the extended area _W, and it is defined by the length, respectively, along the direction D _L and connected to each of the long sides in the direction of length D _L of the two directions around the imaginary line D in the width direction located on the most outer side of the _W The region at the end of the adhesive; and two imaginary straight lines in the width direction, which are connected along the width direction D _W on both sides of the width direction D _W , surround the length direction D _{L and are} the outermost The area at the end of the adhesive on the square side. Further, in FIG. 3, the longitudinal direction of the two imaginary straight lines and the width direction of the imaginary straight line 2, only the division-based adhesive applied portion T _H region (line), respectively, followed by application regions of T _H E _WH both end edges in the width direction of the D _W, E 'on both end edges E _{LH WH} and the longitudinal direction D _L, E' _LH FIG.

The adhesive coating area T _H is from the viewpoint of the contact efficiency between the body fluid discharged by the wearer and the cyclodextrin, as shown in FIG. 3, when viewed from a plan view, D _W spans the absorbent article in the width direction The central axis C _L extending in the longitudinal direction D _L extends in the width direction D _W , and the central axis C _W extending in the aforementioned longitudinal direction D _L across the width direction D _W of the absorbent article and extended in the longitudinal direction D _L region, and a region T _a region overlapping with the absorbent article to absorb the body fluid is over, and the region comprising the bodily fluid absorbent zone T _a is more desirable.

In addition, the term "cyclodextrin arrangement area" in this specification means an area in a plan view where cyclodextrin is arranged on the surface of the cyclodextrin holding sheet, specifically, it means the area in the longitudinal direction _DL And the region extending in the width direction D _W , that is, two imaginary straight lines in the longitudinal direction that are connected in the longitudinal direction D _L on both sides of the longitudinal direction D _L are located at the most in the width direction D _W. cyclodextrin area outer side end portion; and a 2 in the width direction respectively connected to the width direction _{W is} D D _{W is} formed on both sides of the width direction of the imaginary straight lines around the longitudinal direction D The area at the end of the cyclodextrin on the outermost side of _L. In addition, in FIG. 3, the two imaginary straight lines in the longitudinal direction and the two imaginary straight lines in the width direction are only the part (line segment) that divides the cyclodextrin placement area T _C , respectively, as the cyclodextrin placement area T _C the both edges in the width direction D _W E _WC, 'E _{LC WC} and both edges of the long direction of D _L, E' E _LC expressed.

This cyclodextrin arrangement area T _C is from the viewpoint of improving the contact efficiency of the body fluid discharged by the user with the cyclodextrin, etc., as shown in FIG. 3, when viewed from the top, it spans in the width direction D _W the center axis C _L extending in the direction of the length of the absorbent article and D _L in the width direction D _W extension, and extends in the width direction of the absorbent article across the length _L D D _W direction of the central axis C _W and extending in the longitudinal direction D _L region, and a region T _a region overlapping with the absorbent article to absorb the body fluids is desirable, and the regions containing T _a body fluid absorbent region is more desirable. If the fluid cyclodextrin arrangement region T _C comprising a body fluid absorbent article, then the region of the absorption zone T _A, the urine discharged from the apparatus used, etc. are easily accessible to the cyclodextrin, the cyclodextrin can be more reliably play It has deodorizing function and slow-release function of spices.

In this embodiment, the light incontinence pad 1 is a carrier sheet 5'(cyclodextrin holding sheet) formed by the aforementioned adhesive and partially bonded to the carrier sheet 5'(cyclodextrin holding sheet) formed by the cyclodextrin in the cyclodextrin containing layer. and, in plan view, because the region having the aforementioned configuration cyclodextrin both edges E _LC T _C D _L of the longitudinal direction in both ends of edges E _WC E _'LC and the width direction of D _W, E _'WC, respectively than that of the both edges and then E _LH T _H of the application region in the longitudinal direction, E' and E _{WH LH} both edges of the width in the direction D _W, E 'in the _long-WH The direction D _L and the width direction D _W are located closer to the inner side. Therefore, in the portion where the cyclodextrin is held on the carrier sheet 5'by the adhesive, the cyclodextrin contains an absorbent layer It is difficult for the cyclodextrin within 4 to move toward the surface of the carrier sheet 5', and in the portion where the cyclodextrin is not held by the adhesive on the carrier sheet 5', the cyclodextrin contains the absorbent material layer 4 cyclodextrin is within 'is moved to a certain extent the direction of the plane, but are located at both edges by E _LC of the long direction of the arrangement region D _L T _C ratio of cyclodextrin of, E' in the support plate 5 _LC and the both edges in the width direction D _W E _WC, E _'WC is located closer to the outer side of the adhesive, it is difficult to move toward the outer side than the even. Thus, a light incontinence pad 1 according to the present embodiment, the cyclodextrin can contain cyclodextrin-based layer is retained within the inner then followed by the application region T _H, and may be effective in the prevention of specified Offset of cyclodextrin. As a result, the light incontinence pad 1 of the present embodiment is capable of reliably contacting cyclodextrin with body fluids such as urine discharged from the wearer, thereby enabling the deodorizing function of cyclodextrin (odor The adsorption function of gas components) and the slow-release function of active ingredients such as fragrances can be stably and fully exerted.

Further, in the present embodiment, a light incontinence pad, although having: both edges of the cyclodextrin _L T _C of the arrangement region of the long direction D E _LC, E _'LC D _W and the width direction of both edges E _WC, E _'WC, respectively, and then both edges than the E _LH T _H of the application region in the longitudinal direction, E' _LH D _W and the width direction of both edges E _{WH, E'WH has a structure} in which the longitudinal direction D _L and the width direction D _W are located on the inner side, but the absorbent article of the present invention is not limited to such a structure as long as it has: the cyclodextrin arrangement area E _LC both edges of the long axis direction D _L T _C of the 'E _{WC LC} or both edges of the width direction of D _W, E' E _WC according to any one of the adhesive coated area ratio of T E _LH on both end edges of the longitudinal direction _H, 'E _{WH LH} or both edges of the width in the direction D _W, E' E _WH more in the longitudinal direction is located in the D _L or the width direction D _W The square side structure is sufficient. Even the absorbent article having such a configuration, still within the cyclodextrin cyclodextrin-containing layer, followed by a certain extent retained by the application region followed by the T _H, can be sufficiently prevented under a cyclodextrin agent Fine offset.

As described above, in the light incontinence pad 1 of this embodiment, the cyclodextrin-containing layer has carrier sheets 5 and 5'sandwiched by two liquid-permeable sheets to contain the cyclodextrin and the absorbent The cyclodextrin, which is a mixture of a liquid polymer and the aforementioned liquid-retaining substance, has a structure containing the absorbent material layer 4, but the absorbent article of the present invention is not limited to the above-mentioned structure. For example, the aforementioned cyclodextrin-containing layer is capable of allowing cyclodextrin in any form such as powder or granular substance to be combined with the aforementioned absorbent polymer and/or the aforementioned liquid-retaining substance as needed to permeate one sheet of liquid The sheet is folded and sandwiched, or surrounded by three or more liquid-permeable sheets, or, as in the second embodiment described later, one liquid-permeable sheet (ring The dextrin-coated sheet) is formed by covering the non-skin facing surface side. In addition, when a plurality of liquid-permeable sheets are used as the carrier sheet, the liquid-permeable sheets of the same type may be used for the liquid-permeable sheets, or different kinds of liquid-permeable sheets may be used.

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

In addition, the aforementioned fiber structure is capable of allowing the body fluid discharged from the wearer to penetrate, and has such a degree that it does not allow the cyclodextrin to pass between the constituent fibers of the fiber structure and flow out from the aforementioned cyclodextrin-containing layer (for example, The distance between the fibers is preferably smaller than the particle diameter of the cyclodextrin powder described later. As such a fiber structure, for example, a fiber structure in which the distance between fibers of 1 to 300 μm accounts for more than 90% of the total fiber structure, and ideally a fiber structure in which the distance between fibers of 10 to 150 μm accounts for more than 90% of the total fiber Construct.

Here, the distance between the fibers of the fiber structure is based on the mercury intrusion method (JIS R 1655), and can be measured using a mercury porosimeter (manufactured by Shimadzu Corporation) or the like. This mercury intrusion method measures the pressure applied to the mercury and the space between the constituent fibers of the fiber structure when the mercury is pressed into the fiber structure that is the object to be measured. The volume of mercury inside can obtain information about the structure of the aforementioned fiber structure.

Specifically, the inter-fiber distance of the fiber structure can be measured using a mercury porosimeter according to the following procedure.

1) The fiber structure of the object to be measured is cut into a size of 24 mm×15 mm to prepare a sample for measurement. Three pieces of this measurement sample were made.

2) After setting the three measurement samples in the sample cell of the mercury porosimeter (manufactured by Shimadzu Corporation) so as not to overlap each other, the pressure applied to the mercury is gradually changed while the measurement is The volume (that is, the pore volume) of mercury squeezed into the space between the fibers (that is, the pores) of the fiber structure. In addition, the measurement is performed under an environment of 22°C and 65%RH.

3) Calculate the pore diameter D (μm) (that is, the distance between the fibers of the fiber structure (μm)) of the aforementioned pores according to the following formula (1), and calculate the relationship between the pore diameter D and the aforementioned pore volume as the aforementioned pore diameter The distribution curve of D (differential, integral curve) is obtained. In addition, 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).

[Number 1] D=-4 γ cos θ /P. . . (1) (In the formula, D system represents the pore diameter (distance between fibers), γ system represents the surface tension of mercury, θ system represents contact angle, and P system represents pressure.)

4) Based on the obtained distribution curve of pore diameter D, calculate the ratio of the volume of pores with pore diameter D of 1 to 300 μm (or 10 to 150 μm) to the total volume of pores with pore diameter D of 0 to 500 μm.

5) Perform the operations in 2)~4) above 3 times, and compare the obtained volume The average of the ratio is regarded as the ratio (%) of the distance between the fibers of 1 to 300 μm (or 10 to 150 μm) to the total.

In addition, in the light incontinence pad 1 of this embodiment, the cyclodextrin-containing layer is the cyclodextrin contained in the aforementioned cyclodextrin-containing absorbent layer 4, and the cyclodextrin is arranged on the non-skin facing surface of the cyclodextrin The carrier sheet 5'made of thin paper on the side is partially bonded by the aforementioned adhesive. However, in the absorbent article of the present invention, the bonding form of the cyclodextrin and the carrier sheet (liquid permeable sheet) is It is not limited to such a form. For example, the cyclodextrin may be bonded to the liquid-permeable sheet arranged on the side facing the skin of the cyclodextrin, or the cyclodextrin may be separately arranged The liquid-permeable sheet on both the skin-facing surface side and the non-skin-facing surface side of this cyclodextrin is joined.

Here, the cyclodextrin is a cyclic oligosaccharide formed by the glucopyranose unit by α-1,4 bonding. Generally speaking, the glucopyranose unit contained in one molecule of the cyclodextrin In terms of quantity, 6 are α-cyclodextrin, 7 are β-cyclodextrin, and 8 are γ-cyclodextrin. Cyclodextrin, due to the presence of moisture, and other molecules (such as active ingredients such as fragrances or deodorizing ingredients, odor components of excreta, etc.) can be trapped inside the ring structure. At the same time, it can be Other clathrated molecules are released with external effects such as environmental changes. The cyclodextrin used in the absorbent article of the present invention is not particularly limited. In addition to α-, β-, γ-cyclodextrin and/or a mixture of these, it may also be chemically modified (for example, a (Alkylated or ethylated) α-, β-, γ-cyclodextrin and/or mixtures of these. In addition, in the absorbent article of the present invention, the "cyclodextrin" contains the In addition to cyclodextrin, cyclodextrin holding various active ingredients such as fragrance and the like are also included.

In the absorbent article of the present invention, cyclodextrin is used, and it is ideal to retain the cyclodextrin formed by any fragrance such as natural fragrance or synthetic fragrance. The cyclodextrin system that retains this kind of fragrance has the function of slowly releasing the fragrance retained by the cyclodextrin by contact with body fluids such as urine discharged from the user. The released fragrance can cover the odor of the aforementioned body fluid, and at the same time, the uncathrated cyclodextrin after the release of the fragrance can adsorb odor components such as ammonia contained in the aforementioned body fluid. Therefore, if cyclodextrin which retains such fragrance is used, the odor generated by body fluids such as urine discharged from the wearer can be effectively suppressed.

In addition, the fragrance retained by the cyclodextrin is not particularly limited, and any conventionally known fragrances such as natural fragrances or synthetic fragrances can be used. However, considering that the absorbent article is suitable for the human body, natural plant-derived Spices are ideal. In addition, it is preferable that the fragrance retained by the aforementioned cyclodextrin has the same ingredients as the aforementioned liquid fragrance. If the fragrances are of the same ingredient, even if the body fluids such as urine discharged from the user come into contact with the cyclodextrin that retains the fragrance, and the fragrance is released from the cyclodextrin, it will not be produced by each fragrance. When the different scents are mixed with each other to change the scent, there is no unpleasant scent due to the mixing of multiple scents. Even when the body fluids such as urine are discharged from the wearer, in addition to the fragrance caused by the aforementioned liquid fragrance, the fragrance caused by the fragrance released from the aforementioned cyclodextrin will also be generated, so the fragrance emitted from the aforementioned absorbent article will be It is strengthened to cover the odor when the body fluid is discharged more strongly.

Furthermore, in the absorbent article of the present invention, if the unclasped cyclodextrin (cyclodextrin without fragrance retention) is used together with the fragrance retention cyclodextrin, the above-mentioned fragrance retention cyclodextrin will be used together. The resultant effect can also ensure a certain amount of uncladded cyclodextrin in the absorbent article, so it can more reliably show the adsorption effect of the odor components caused by the unclasped cyclodextrin, which can be more Increase the deodorizing effect of absorbent articles. The unclad cyclodextrin should preferably be used at a ratio of 5-50% by mass relative to the total amount of cyclodextrin used. In addition, the fragrance-holding cyclodextrin includes not only a clathrate complex in which the fragrance is clathed inside the ring structure of the cyclodextrin molecule, but also includes various intermolecular forces or intermolecular interactions. It is formed by combining cyclodextrin molecules with spices.

The form of the cyclodextrin used in the absorbent article of the present invention is not particularly limited, and various forms can be used. However, it is in terms of dispersibility, ease of handling during manufacture, lift, and body fluids such as urine discharged from the wearer. From the viewpoint of contact efficiency and the like, it is preferable to use a cyclodextrin powder whose particle size is adjusted with a bond of maltodextrin cyclodextrin, pullulan, gum arabic, etc. The particle size of the cyclodextrin powder is not particularly limited. For example, about 5μm~300μm can be used, ideally 10μm~100μm, but it has a larger size than the carrier sheet (liquid permeable sheet) adjacent to the cyclodextrin that constitutes The particle size of the fiber structure with a large inter-fiber distance is particularly desirable. If the particle diameter of the cyclodextrin powder is larger than the distance between the fibers of the fiber structure constituting the carrier sheet, the cyclodextrin powder or particles can be prevented from passing between the fibers constituting the fiber structure and from the cyclodextrin Containing layer flows out, so it can stabilize the slow-release function of active ingredients such as deodorant function of cyclodextrin and fragrance, and make It is fully utilized.

In addition, the particle size of the above-mentioned cyclodextrin powders can be obtained by, for example, dry laser diffraction scattering using a laser diffraction/scattering particle size distribution measuring device (for example, Microtrac MT3300EXII manufactured by Nikkiso Co., Ltd.) Method to determine. In this dry laser diffraction scattering method, the sample is dispersed with air while the sample is irradiated with laser light, and the particle diameter distribution based on the volume is measured from the diffraction and scattering pattern. In this manual, the system will The median diameter (D50) obtained from the aforementioned particle diameter distribution is used as the particle diameter of the aforementioned powder. The specific measurement conditions caused by the dry laser diffraction scattering method are as follows.

Number of measurements: 1 time

Measuring time: 10 seconds

Dispersion pressure: 100kPa

Particle penetration: penetration

Refractive index of particles: 1.81

Particle shape: non-spherical

Solvent: Air

Refractive index of solvent: 1.00

Measuring range: 0.243~2000μm

In addition, the aforementioned cyclodextrin powder may be a cyclodextrin containing a small amount of any active ingredients such as deodorizing components in addition to the above-mentioned cyclodextrins and fragrances. Any function of refined, and/or bond or absorbent component (such as pulp or absorbent polymer, etc.), absorbent component (such as zeolite, silica gel, activated carbon, etc.) Ingredients (for example, 10% by mass or less). Examples of the active ingredient system include conventionally known deodorant ingredients, antibacterial ingredients, and mixtures thereof. This type of cyclodextrin that retains the active ingredient is not only a clathrate complex with the aforementioned active ingredient clathrated inside the ring structure of the cyclodextrin molecule, but also includes various intermolecular forces or intermolecular It is formed by the interaction between the cyclodextrin molecule and the aforementioned active ingredient.

The cyclodextrin (i.e. cyclodextrin complex) that retains the aforementioned active ingredients has the ability to slowly release the cyclodextrin by contacting the moisture contained in body fluids such as urine discharged from the wearer The retained active ingredient enables the function of the aforementioned active ingredient to be exhibited. Such cyclodextrin complexes can be easily obtained, for example, by adding perfumes and active ingredients to a solution containing unclathed cyclodextrin, and stirring and mixing. In addition, the presence or absence of the inclusion of cyclodextrin can be confirmed by elemental analysis using X-rays.

In the light incontinence pad 1 of this embodiment, the cyclodextrin-containing layer contains the above-mentioned cyclodextrin, the cyclodextrin-containing absorbent layer which is a mixture of the aforementioned absorbent polymer and the aforementioned liquid-retaining substance (such as pulp, etc.) 4. It has carrier sheets 5, 5'formed by two liquid-permeable sheets (such as tissues, etc.) on the skin-facing side and the non-skin-facing side of the cyclodextrin-containing absorbent layer 4 In addition, at least a part of the cyclodextrin in the aforementioned cyclodextrin-containing absorbent material layer 4 is held by a hot-melt adhesive to be located on the aforementioned cyclodextrin-containing absorbent layer 4 The carrier sheet 5'(cyclodextrin holding sheet) on the non-skin facing side is on the surface of the skin facing side. If the cyclodextrin-containing layer is constructed in this way, When the body fluid such as urine discharged by the user reaches the cyclodextrin-containing layer, the body fluid moves to the inner and lower side of the cyclodextrin-containing absorbent layer 4 (not the side facing the skin) by gravity. The part of the carrier sheet 5'stays in this part, so that the body fluid staying in this part can easily come into contact with the cyclodextrin held on the surface of the carrier sheet 5'opposite to the skin, and the cyclodextrin can be The deodorizing function and the sustained release function of active ingredients such as fragrances can be more efficiently and effectively exerted.

This type of cyclodextrin-containing layer is formed by incorporating the cyclodextrin containing the above-mentioned cyclodextrin, a mixture of the aforementioned absorbent polymer and the aforementioned liquid-retaining substance into the absorbent layer 4, and using a hot-melt type adhesive The agent can be obtained by joining two carrier sheets 5, 5'. Specifically, through the adhesive coating process, the carrier sheet 5'(cyclodextrin holding sheet) made of tissue paper, etc., is placed on the side facing the user’s skin, and the carrier sheet 5 'side in a static state or conveyed, at the side of the carrier sheet 5' of the upper surface of the skin facing side of the aforementioned adhesive, corresponding to the light _L along the direction of the length of the incontinence pad 1 and the direction D be coated; cyclodextrin configuration and engineering, based on the cyclodextrin disposed at least on the adhesive of the adhesive coating is applied within the region T _H of the agent, and then surface; and a cyclodextrin containing absorbent material layer forming step, the absorbent polymer-based substance and a liquid held (e.g., pulp and the like) of the mixture, the carrier sheet disposed on the 5 'region of the adhesive coating within the at least the T _H agents and then the cyclodextrin On the surface of the essence, the cyclodextrin-containing absorbent material layer 4 is formed; and the carrier sheet arrangement process is on the surface of the aforementioned cyclodextrin-containing absorbent material layer 4 on the side of the skin opposite to the skin, with or without an adhesive. By disposing the carrier sheet 5, the above-mentioned cyclodextrin-containing layer can be obtained.

In the aforementioned cyclodextrin disposing process, the method of disposing the aforementioned cyclodextrin on the surface of the adhesive that has been coated on the aforementioned carrier sheet is not particularly limited, and can maintain the state of the aforementioned powder and granular substance directly. The configuration can also be dispersed in a dispersion medium (such as polysiloxane oil, mineral oil, etc.), or it can be dissolved in a solvent (such as propylene glycol, dipropylene glycol, 1,3-butanediol) Dihydric alcohols such as triethyl citrate, diethyl phosphonate and other ester-based organic solvents, etc.) are arranged in the state of a solution.

In addition, in the aforementioned cyclodextrin disposition process, the disposition means of cyclodextrin is not particularly limited. For example, non-contact or contact coating can be used, in any of spray form, multiple stripes, Ω form, etc. Form and be coated. Cyclodextrin can also be applied without gaps in the cyclodextrin configuration area T _C when viewed from the top view, or it can form a plurality of areas without cyclodextrin in the cyclodextrin configuration area T _C (that is, the ring Dextrin does not exist in the area) to be applied. In particular, the cyclodextrin-based arrangement region T _C T _A region containing the overlapping area overlapping with the absorbent article to absorb the body fluid, to form a plurality of cyclodextrin should not present over the area to be coated in the overlapping area. If such a cyclodextrin non-existent area is formed, the area can function as a passage for body fluids such as urine discharged from the wearer. Therefore, the aforementioned body fluids will not be hindered by the cyclodextrin-containing absorbent layer. It penetrates into the thickness direction D _{T of the} absorbent article. As a result, the absorbent article of the present invention can exhibit a deodorizing function and excellent absorption performance.

In addition, in the absorbent article of the present invention, the amount of cyclodextrin applied is not particularly limited, and can be appropriately set according to the desired deodorizing performance, absorption performance, etc., for example, it can be set per absorbent article It is 20mg~100mg. Furthermore, the aforementioned cyclodextrin, from the viewpoint of increasing the chance of contact between body fluids such as urine discharged by the user, and cyclodextrin, as shown in FIG. 3, when viewed from above, it is arranged to absorb within the area of the article comprising a body fluid absorbent zone T _a is over.

In this embodiment, the cyclodextrin-containing absorbent layer 4 in the cyclodextrin-containing layer contains cyclodextrin, a mixture of the absorbent polymer and the liquid-retaining substance, and functions as an absorbent layer. In this embodiment, the cyclodextrin-containing absorbent layer is not particularly limited as long as it has an absorbent layer containing cyclodextrin, but the cyclodextrin-containing absorbent layer contains cyclodextrin, The mixture with absorbent polymer and pulp is ideal. If such an aspect is used as the cyclodextrin-containing absorbent material layer, in the cyclodextrin-containing absorbent material layer, the assembly system of pulp will act to make the body fluids reaching the cyclodextrin-containing absorbent material layer borrow Due to the capillary phenomenon, it diffuses into a wide area in the cyclodextrin-containing absorbent material layer, so the aforementioned body fluids can be absorbed and retained in a wide range of places in the cyclodextrin-containing absorbent material layer, and it is excellent as an absorbent article At the same time, because the cyclodextrin-containing absorbent layer can absorb and retain the body fluids, even when the amount of body fluids such as urine discharged from the wearer is large, it can still be retained The cyclodextrin contains the body fluids inside the absorbent material layer, and can surely contact the cyclodextrin in the aforementioned cyclodextrin absorbent material layer after a long time.

Moreover, in the aforementioned cyclodextrin containing an absorbent layer, the aforementioned absorption Although the content of the sexual polymer and the aforementioned liquid-retaining substance is not particularly limited, it is desirable to contain 60 parts by mass or less and 40 parts by mass or more per 100 parts by mass in total. In the cyclodextrin-containing absorbent layer, if the content of the absorbent polymer is 60 parts by mass or less, body fluids that are not absorbed by the absorbent polymer are likely to be present, so the body fluids that can come into contact with the aforementioned cyclodextrin The amount and contact time increase, and if the content of the liquid-retaining substance is 40 parts by mass or more, the capillary phenomenon of the liquid-retaining substance easily spreads body fluids over a wide range, so the aforementioned Body fluids come into contact with the aforementioned cyclodextrin in a wide range.

In the light incontinence pad 1 of the present embodiment, the cyclodextrin contains the absorbent material layer 4, and the cyclodextrin contains at least a part of the cyclodextrin in the absorbent material layer 4 through the hot-melt adhesive and the aforementioned carrier The sheet 5'(cyclodextrin-retaining sheet) is used for bonding, but in the absorbent article of the present invention, the adhesive for bonding the aforementioned cyclodextrin and the cyclodextrin-retaining sheet is not particularly limited, and any conventionally known ones can be used.之adhesive.

Further, in the present embodiment, a light incontinence pad 1, the adhesive, based on the carrier sheet 5 '(the cyclodextrin remains sheet) between the cyclodextrin and the absorber layer 4 comprising, extending in the longitudinal direction D _L At the same time, they are arranged in plural in the aforementioned width direction D _W. If the adhesive is so configured, in the plan view, is formed in the region of the part then T _H Have application regions of adhesive is present (i.e., the absence of adhesive region), the region-based urine as discharged from repackage the fluid passage play function, etc., and therefore, the fluid is not blocked by the adhesive, the cyclodextrin may be holding the sheet at the side of the diffusion length D _L direction toward one side in the thickness direction of the non-skin of D _T When the body fluid penetrates from the skin-facing side of the cyclodextrin holding sheet to the non-skin-facing side, the body fluid is diffused in the direction of the surface of the cyclodextrin holding sheet. , The body fluid spreading in the surface direction of the cyclodextrin holding sheet can be brought into contact with the cyclodextrin in a wide area. As a result, the absorbent article of the present invention not only has good absorption performance as an absorbent article, but also can make the deodorizing function of cyclodextrin and the slow-release function of fragrance more effective and efficient. .

In the light incontinence pad 1 of the present embodiment, the application form of the aforementioned adhesive is not particularly limited. For example, it may be linear or wavy, spiral, zigzag, Ω-shaped, and other linear solids when viewed from above. Lines or dotted lines; dots; grids and other geometric patterns to be coated. And, engaging the cyclodextrin with cyclodextrin holding the adhesive sheet is used, in a top view the bonding agent can also be present without a gap in the application region followed by T _H, in the planar form (so-called The entire surface of the coating), coated on the aforementioned cyclodextrin holding sheet. If the adhesive is applied in such a fully spread form, the adhesive will penetrate between the constituent fibers of the fibrous structure constituting the cyclodextrin holding sheet and fill the voids in the fibrous structure. Therefore, the adhesive is already covered by the cyclodextrin The cyclodextrin held by the holding sheet is difficult to penetrate the liquid-permeable sheet and flow out from the cyclodextrin-containing layer, and the strength of the liquid-permeable sheet is increased, so that it is not easy to break during loading. It is also difficult to shrink by heat. As a result, the absorbent article of the present invention can stably maintain the structure of the containing layer in the cyclodextrin containing layer, so that the deodorizing function of the cyclodextrin in the cyclodextrin containing layer and the sustained release of fragrance can be achieved The function is more stable and more reliable. In addition, as in the second embodiment described later, cyclodextrin is an absorbent article having a structure that is bonded to the sheet on the side facing the skin of the cyclodextrin. If it is applied to the cyclodextrin-retaining sheet, the liquid permeability of the cyclodextrin-retaining sheet will be impeded because it should be an adhesive.

In addition, in the absorbent article of the present invention, the coating amount of the aforementioned adhesive is not particularly limited, and can be appropriately set according to the desired adhesive strength, liquid permeability, deodorizing performance, etc., for example, it can be set to 1-40 g/ m ² , the ideal system is 2-20g/m ² , and the ideal system is 4-10g/m ² .

Next, the 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 a first embodiment of the present invention, and is also a plan view of a light incontinence pad according to a second embodiment of the present invention. 4 is an end view of the light incontinence pad of the second embodiment of the present invention taken along the line II-II' of FIG. 1. In the light incontinence pad 1 described in this second embodiment, the layer containing cyclodextrin (the cyclodextrin-containing absorbent material layer 4 in the first embodiment) is a cyclodextrin composed of only cyclodextrin Fine layer 4'; at least a part of the cyclodextrin is held on the non-skin facing surface of the liquid-permeable sheet 7'between the surface sheet 2 and the cyclodextrin layer 4'(holding Surface), and the liquid-permeable sheet 7'is an absorbent material that holds an absorbent polymer 6 or the like on the side opposite to the holding surface, and is arranged on the side of the skin facing the absorbent material the liquid-permeable sheet 7, together form a absorbent sheet S _a (absorption layer); and the cyclodextrin is a cyclodextrin, etc. tissue by liquid cover sheet 10 formed between the permeable sheet, and the non-skin The opposing surface side is covered (that is, the cyclodextrin-containing layer 40 contains the cyclodextrin layer 4'and the aforementioned cyclodextrin-coated sheet 10), and has the same configuration as the above-mentioned embodiment.

In the light incontinence pad 1 of this embodiment, the layer containing cyclodextrin is composed of cyclodextrin only. Therefore, body fluids such as urine discharged from the wearer can come into contact with the aforementioned cyclodextrin. Opportunities are increased, and at the same time, the thickness of the layer containing the aforementioned cyclodextrin can be reduced, and any product design such as thinning can be realized in accordance with the absorption amount.

In addition, the light incontinence pad 1 of this embodiment is a non-skin pair of the liquid-permeable sheet 7'that is held between the surface sheet and the cyclodextrin layer 4'at least part of the cyclodextrin The holding surface on the facing side, and the liquid-permeable sheet 7', maintains the absorbency of the absorbent polymer 6, etc. on the surface opposite to the holding surface (that is, the surface on the side facing the skin) material, with the skin being disposed in the absorbent materials of the liquid-permeable sheet 7 opposite surface side, the absorbent sheet formed of S _a (absorption layer) together. With this configuration when the light incontinence pad 1, when the body fluid such as urine discharged from the wearer reaches the loaded absorbent sheet S _A, because the fluid migration under the action of gravity in the absorbent sheet to the S _A portion side (non-skin facing surface of the side) and is retained in this portion, thus remaining in the side portion of the body fluids to the surface direction of the absorbent sheet S _a diffusion to the side of the liquid-permeable sheet 7 'slowly impregnated , The body fluid and the cyclodextrin held on the non-skin facing side of the liquid permeable sheet 7'can be brought into contact in a wide range. As a result, the deodorizing function and the sustained release function of active ingredients such as fragrances contained in the cyclodextrin can be more efficiently and effectively exerted.

Further, in the second embodiment of a light incontinence pad 1, the absorbent sheet S _A, may be based of the above-described first embodiment, and a light incontinence pad 1. The absorbent sheet was produced in the same manner. Then in the second embodiment, based on the skin surface of the absorbent sheet S _A on the opposite side (i.e., liquid-absorptive sheet constituting the non-skin facing side of the permeable sheet holding surface 7 ') on , after the hot-melt type adhesive is applied along the light incontinence and the direction corresponding to the direction of length D _L of the pad 1, in which the adhesive has been coated with the adhesive coated area of at least T _H Cyclodextrin is disposed on the surface of the adhesive, thereby forming a cyclodextrin layer 4'. Furthermore, the cyclodextrin layer 4'is coated with a cyclodextrin-coated sheet 10 made of a liquid-permeable sheet , whereby the obtained absorbent sheet has been engaged with the S _a, containing the cyclodextrin and the cyclodextrin-containing absorbent material layer 4 and the covering sheet 10 cyclodextrins containing layer.

In addition, the light incontinence pad 1 of this embodiment is a cyclodextrin held by the liquid-permeable sheet 7', and is a cyclodextrin-coated sheet 10 made of a liquid-permeable sheet of tissue, etc. The non-skin facing side is covered, so the cyclopaste can be accurately and firmly held on the holding surface of the liquid-permeable sheet 7', and the deodorizing function of the cyclodextrin and the slow-release mechanism of active ingredients such as fragrances can be achieved Can play stably.

In this embodiment, the cyclodextrin-coated sheet 10 is preferably made of the same material as the carrier sheet of the light incontinence pad 1 of the first embodiment described above, that is, a fibrous structure such as tissue paper. If you use this As the cyclodextrin-coated sheet 10, the body fluid that reaches the cyclodextrin-coated sheet 10 can be diffused toward the surface of the cyclodextrin-coated sheet 10. Therefore, the body fluid can be The cyclodextrin on the skin-facing side of the cyclodextrin-coated sheet 10 makes contact in a wide area. In addition, when the above-mentioned fiber structure is used as the cyclodextrin-coated sheet 10, the fiber structure has a degree that does not allow the cyclodextrin to pass between the constituent fibers of the fiber structure (for example, more than the above-mentioned cyclodextrin The distance between the fibers is ideal if the particle size of the powder is smaller.

The present invention is applicable to various absorbent articles such as sanitary pads, sanitary napkins, disposable diapers, etc., in addition to the light incontinence pads applicable to the above-mentioned embodiments. . In addition, the absorbent article of the present invention is not limited by the above-mentioned embodiment, and can be combined and changed appropriately within a range that does not deviate from the purpose and spirit of the present invention. In addition, in this manual, the ordinal numbers such as "first" and "second" are only used to distinguish the items to which the ordinal number is assigned, and do not mean the order, priority, importance, etc. of the items .

1‧‧‧Light incontinence pads (absorbent articles)

2‧‧‧Surface sheet (liquid permeable layer)

3‧‧‧Inside sheet (liquid impermeable layer)

4‧‧‧Cyclodextrin contains absorbent layer

5‧‧‧Carrier

5’‧‧‧Carrier

6‧‧‧Absorbent polymer (absorbent material)

7‧‧‧Skin-facing liquid permeable sheet

7’‧‧‧Non-skin facing liquid permeable sheet

8, 8’‧‧‧Side folded sheet

9, 9’‧‧‧Silk elastic member

11‧‧‧Absorbent polymer configuration area

12‧‧‧Absorbent polymer non-allocation area

13‧‧‧Absorbent polymer non-existent area

14‧‧‧Press groove

15‧‧‧High Density Department

G‧‧‧Adhesive

T _C ‧‧‧Cyclodextrin configuration area

T _H ‧‧‧Adhesive coating area

T _F, T _'F ‧‧‧ region arranged perfume

S _A ‧‧‧Absorbent sheet

Claims (8)

An absorbent article comprising: a liquid-permeable layer; a liquid-impermeable layer; an absorption layer between the two layers; and a cyclodextrin-containing layer between the aforementioned absorbent layer and the aforementioned liquid-impermeable layer An absorbent article, wherein the absorbent layer has a longitudinal direction, a width direction, and a thickness direction, and is provided with: an absorbent polymer; a liquid permeable sheet holding the absorbent polymer; and fixing the absorbent polymer The adhesive for the liquid-permeable sheet; and the fragrance present in the end region of the width direction of the absorbent layer. The absorbent layer is formed by sandwiching the absorbent polymer by the liquid-permeable sheet Is formed in the thickness direction and has: an absorbent polymer arrangement area existing in the central region of the width direction; and an absorbent polymer non-arrangement area adjacent to the absorbent polymer arrangement area in the width direction, The liquid-permeable sheet is formed by folding the absorbent polymer non-arrangement area in the longitudinal direction toward the inner side of the width direction by extending a folding line in the longitudinal direction, and is formed between the folding line and the liquid-permeable sheet Between the two end edges in the width direction, the fragrance is present in the region sandwiched in the thickness direction by the liquid permeable sheet, and the adhesive is intermittently applied to the liquid permeable sheet. And is applied to the position of the liquid-permeable sheet located on the skin-facing side of the absorbent polymer; and applied to the liquid-permeable sheet located on the non-skin-facing side of the absorbent polymer Position, so as to be coated on the thin liquid permeability without overlapping each other in the thickness direction sheet. The absorbent article as described in item 1 of the scope of patent application, wherein the absorbent layer does not contain pulp fibers. The absorbent article described in item 1 or item 2 of the scope of patent application, wherein the absorbent layer has an absorbent polymer in which the absorbent polymer is not locally present in the absorbent polymer arrangement area in a plan view. In the presence area, the absorbent article has a press sipe extending from the skin facing surface of the liquid permeable layer to at least the inside of the absorbent layer, and the press sipe is formed in the absorptive polymer non-existing area in a plan view. The absorbent article according to item 1 or item 2 of the scope of the patent application, wherein the cyclodextrin-containing layer contains: a cyclodextrin complex formed from a cyclodextrin that retains a fragrance; and does not retain the fragrance Cyclodextrin. The absorbent article described in item 1 or item 2 of the scope of the patent application, wherein the cyclodextrin-containing layer includes: a cyclodextrin powder and an absorbent material, and the cyclodextrin powder and particles include a cyclodextrin At least one of the complexes of quinine and cyclodextrin. For the absorbent article described in item 5 of the scope of the patent application, wherein the absorbent material is a mixture of an absorbent polymer and a liquid-retaining substance, so that the absorbent polymer and the liquid-retaining substance are each A total of 100 parts by mass includes 60 parts by mass or less and 40 parts by mass or more. Such as the absorbent article described in item 5 of the scope of patent application, which Wherein, the cyclodextrin-containing layer further comprises: the cyclodextrin powder and granular material and the cyclodextrin which is located between the absorbent material and the liquid impermeable layer and retains at least a part of the cyclodextrin powder and granular material Keep it thin. The absorbent article described in item 1 or item 2 of the scope of the patent application, wherein the cyclodextrin-containing layer includes: a cyclodextrin powder or granular material, which includes at least one of a cyclodextrin and a cyclodextrin complex And a cyclodextrin-coated sheet, which is located between the cyclodextrin powder and particles and the liquid impermeable layer, and is covered with the cyclodextrin powder and particles, and at least a part of the cyclodextrin powder and particles are held in The aforementioned absorbent layer.

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