JP2011254903A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article having an absorber containing traditional Chinese medicinal materials, which can prevent fungus growth in the traditional Chinese medicinal materials without impairing the function effect achieved by the materials.SOLUTION: The absorbent article 1 includes at least a liquid-permeable front surface sheet 10, a liquid impermeable back surface sheet 20, and an absorber 30 positioned between the front surface sheet 10 and the back surface sheet 20. The absorber 30 contains at least one of traditional Chinese medicinal materials and the traditional Chinese medicinal materials undergo antifungal treatment with a halogen-based antifungal agent.

Description

  The present invention relates to an absorbent article, and more particularly, to a functional absorbent article provided with a function other than an absorbing ability such as a deodorizing function.

  In recent years, absorbent articles are not only limited to the basic function of absorption and retention of excrement and the like, but have been tried to increase the added value as a product by adding other functions other than the absorption and retention function. .

  Examples of such other functions include a deodorizing function, an aroma function, an antibacterial function, and a heat function. And as a structure for providing another function, for example, the following Patent Document 1 proposes an absorbent article having an absorbent body including at least one kind of Chinese medicine material.

JP 2008-272269 A

  Absorbent articles having an absorbent containing such Chinese herbal medicine materials are often stored in humid places such as in a toilet or near a bathroom. However, fungi (molds) tend to be generated from traditional Chinese medicine as a nutrient source in a humid environment.

  Therefore, in an absorbent article having an absorbent body containing a herbal medicine material, it has been required to perform an antifungal treatment in order to suppress the occurrence of mold during storage.

  Conventionally, it is known that anti-fungal treatment has an anti-fungal effect on gamma ray irradiation. Even in an absorbent article having an absorbent containing a herbal medicine material, if a large amount of gamma rays are irradiated to the herbal medicine material, it is possible to prevent the occurrence of mold by completely killing the bacteria.

  However, there is a problem in that when irradiating a large amount of gamma rays that completely kills the bacteria, the volatile components of the Chinese herbal medicine are reduced and the aroma function is lowered. In order to maintain the merchantability of an absorbent article having an absorbent containing a herbal medicine material, irradiation with a large amount of gamma rays must be avoided.

  The present invention has been made in view of the above situation, and an object of the present invention is to prevent the occurrence of mold in a herbal medicine material without impairing the function provided by the herbal medicine in an absorbent article having an absorbent containing the herbal medicine material. To do.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have found that it is possible to suppress the occurrence of mold while maintaining the fragrance function by applying a mildew-proofing treatment to the herbal medicine material with a halogen-based fungicide. The headline and the present invention were completed. More specifically, the present invention provides the following.

  (1) An absorbent article comprising at least a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet, the absorption The body includes at least one kind of Chinese herbal medicine material, and the Chinese herbal medicine material is an absorbent article obtained by performing a first fungicidal treatment with a halogen-based fungicidal agent.

  (2) The absorbent article according to (1), wherein the halogen-based anti-fungal agent in the first anti-mold treatment is 3-iodo-2-propynyl butyl carbamate (IPBC).

  (3) The absorbent article according to (1) or (2), wherein in the first antifungal treatment, the halogen antifungal agent is applied to a surface of the Chinese herbal medicine material.

  (4) In the first antifungal treatment, the mixture of the Chinese herb medicine material and the halogen antifungal agent is applied to a sheet constituting the absorber (1) or (2) Absorbent article.

  (5) The absorbent article according to (1) or (2), wherein, in the first antifungal treatment, the Chinese herbal medicine material is in contact with a sheet containing the halogen antifungal agent.

  (6) The sheet according to (5), wherein the sheet is formed by applying the halogen-based antifungal agent to the sheet surface, and the Chinese medicine material is disposed within the application range in a plan view of the absorbent article. Absorbent article.

  (7) The absorbent article according to (6), wherein the application is printing on the surface of the sheet using a colored ink containing the halogen-based antifungal agent.

  (8) An absorbent article comprising at least a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet, the absorption The body contains at least one kind of Chinese herbal medicine material, and the Chinese herbal medicine material is subjected to a first antifungal treatment with a halogen-based antifungal agent and a second antifungal treatment with gamma irradiation. .

  (9) The method for producing an absorbent article according to (8), wherein the halogen-based anti-fungal agent in the first anti-mold treatment is 3-iodo-2-propynyl butyl carbamate (IPBC).

  (10) The halogen-type antifungal agent is a solution having a concentration of 4 ppm or more and 500 ppm (weight / weight) or less, and the solution is sprayed from 0.1 L to 10 L per 100 kg of herbal medicine material (8) or (9) Manufacturing method of absorbent article.

  (11) The method for producing an absorbent article according to (8) or (9), wherein the gamma ray irradiation dose in the second antifungal treatment is 1 KGY or more and less than 5 KGY.

  ADVANTAGE OF THE INVENTION According to this invention, generation | occurrence | production of mold | fungi in a Chinese medicine material can be suppressed in the absorbent article which has an absorber containing a Chinese medicine material, maintaining the aromatic function which a Chinese medicine material has.

It is a top view of the absorptive article in a 1st embodiment of the present invention. It is a reverse view of the absorbent article in the 1st Embodiment of this invention. It is XX sectional drawing of the absorptive article in a 1st embodiment of the present invention. It is YY sectional drawing of the absorbent article in the 1st Embodiment of this invention. It is a top view of the absorptive article in other embodiments of the present invention. It is a cross-sectional schematic diagram of the intermediate | middle absorber of the absorbent article in other embodiment of this invention.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the following embodiments, and can be implemented with appropriate modifications within the scope of the object of the present invention.

<Overall configuration of absorbent article>
As shown in FIGS. 1 to 4, the absorbent article 1 according to the present invention is formed in a vertically long shape, and is a liquid-permeable top sheet 10, a liquid-impermeable back sheet 20, a top sheet 10 and a back surface. It has an absorber 30 that is disposed between the sheet 20 and absorbs and holds liquid such as excrement.

  In the absorbent article 1, a strip-shaped absorbent portion 3 is formed along the longitudinal direction LD substantially at the center in the width direction WD of the absorbent article 1. The absorber 3 is composed of a top sheet 10 and an absorber 30. In addition, compressed grooves 4 and 41 are formed in the absorbing portion 3. The compressed grooves 4 and 41 are formed in an annular shape along the longitudinal direction LD, and join the top sheet 10 and a base absorbent body 31 (described later) constituting the absorbent body 30.

  Wings 2R and 2L are formed on both sides of the absorbent article 1 in the width direction WD so as to protrude outward in the width direction WD. The wings 2 </ b> R and 2 </ b> L are formed by the side sheet 11 disposed along the longitudinal direction LD on both sides in the width direction WD of the top sheet 10 and the back sheet 20.

  The back sheet 20 is disposed on the surface of the absorbent body 30 opposite to the surface on which the top sheet 10 is disposed. Moreover, as shown in FIG. 2, the slip prevention part 21 and the wing side slip prevention part 22R, 22L are formed in the surface on the opposite side to the absorber 30 in the back surface sheet 20. As shown in FIG.

  As shown in FIGS. 1 and 3, the top sheet 10 is disposed on the surface of the absorber 30 opposite to the surface on which the back sheet 20 is disposed so as to cover the absorber 30, and liquid such as excreta Is transmitted through the absorber 30 described later.

  Side sheets 11 can be disposed on both sides of the top sheet 10 in the width direction WD. The side sheet 11 is in a state in which a part of the absorbent article 1 in the longitudinal direction LD protrudes outward in the width direction WD, and forms wings 2R and 2L together with a back sheet 20 described later. Further, the side sheets 11 are joined by embossed portions (not shown) formed at substantially equal intervals along the longitudinal direction on both sides of the top sheet 10 in the width direction WD. The member constituting the side sheet 11 is preferably a water-repellent sheet.

  As shown in FIGS. 2 and 3, the back sheet 20 is disposed on the surface of the absorbent body 30 opposite to the top sheet 10 side. The back sheet 20 constitutes a leak-proof layer in the absorbent article 1. The back sheet 20 is formed of a liquid-impermeable sheet, and can be controlled so that liquid such as excrement held in the absorber 30 does not adhere to the undergarment.

<Configuration of absorber>
As shown in FIGS. 1, 3, and 4, an absorber 30 is disposed between the top sheet 10 and the back sheet 20. The absorber 30 includes at least one kind of Chinese medicine material. As herbal medicine materials, specifically, at least one of herbal medicines such as cocoon leaves, katsukiko, toki, ginseng, benevolent grass, nine-fold grasses, 蒲公英, yam, mulberry mushroom, and cocoon can be used. . In the present invention, the herbal medicine material contained in the absorbent body 30 is subjected to a fungicidal treatment with a halogen-based fungicidal agent. This will be described later.

  In the present embodiment, the absorber 30 mainly absorbs and holds the liquid such as excrement and the Chinese herbal medicine material, thereby absorbing other liquids such as excrement. And an intermediate absorber 32 having the same. By arranging the intermediate absorber 32 mixed with the herbal medicine material, the position of the absorber including the herbal medicine material can be arbitrarily selected, and the visibility on the appearance of the herbal medicine material in the absorbent article 1 can be improved. it can. However, the intermediate absorber 32 is not an essential component in the present invention. The present invention can be implemented with appropriate modifications within the scope of the object. For example, in an absorbent article in which a traditional Chinese medicine material is disposed on an absorbent body 30 that does not have the intermediate absorbent 32 as a constituent element, an absorbent article obtained by subjecting the traditional Chinese medicine material to the antifungal treatment according to the present invention is also an embodiment of the present invention. It is.

  The base absorbent body 31 absorbs and holds liquid such as excrement. Specifically, it absorbs and holds liquid such as excrement that has passed through an intermediate absorber 32 described later. The base absorbent body 31 is disposed between the top sheet 10 and the back sheet 20 and joined to the top sheet 10 by the compressed grooves 4 and 41. Further, the base absorbent body 31 and the back sheet 20 are joined to each other with a hot melt adhesive.

The base absorbent body 31 is formed, for example, by laminating pulverized pulp 311 mixed with a superabsorbent polymer and wrapping it with a tissue 312. The basis weight of the tissue 312 is formed at, for example, 15 g / m ² . Also. The basis weight of the pulverized pulp 311 is 300 to 500 g / m ² in the arrangement region of the intermediate absorber 32. Further, the basis weight of the region other than the region where the intermediate absorber 32 is disposed in the base absorber 31 is 180 to 250 g / m ² , preferably 190 to 210 g / m ² .

  The intermediate absorbent body 32 is disposed between the base absorbent body 31 and the top sheet 10, absorbs and holds liquid such as excrement transmitted from the top sheet 10, and constitutes the absorbent body 30 together with the base absorbent body 31. . Moreover, the intermediate | middle absorber 32 can have the function which the Chinese medicine material contained in the intermediate | middle absorber 32 has other than absorbing liquid, such as excrement. The intermediate absorber 32 will be described later.

  In the absorbent part 3 of the absorbent article 1, a compressed groove 4 for joining the topsheet 10 and the base absorbent body 31 is disposed. The compressed groove 4 is formed by alternately arranging the low compression portion and the high compression portion. The compressed groove 4 is formed in an annular shape so as to be long along the longitudinal direction LD. The portions close to both ends in the longitudinal direction LD of the absorbent article 1 in the compressed groove 4 are formed to project in an arc shape so that the substantially central portion in the width direction WD is closest to the end portion. Further, a moderate arc-shaped compression groove 41 is formed inside the region surrounded by the compression groove 4 so as to connect the annular compression groove 4 in the width direction WD. An intermediate absorber 32 described later is disposed in a region surrounded by the compressed groove 41 in the absorption unit 3. In other words, the compressed grooves 4 and 41 are formed at positions excluding the arrangement region of the intermediate absorber 32.

<Configuration of intermediate absorber>
In the present embodiment, the intermediate absorbent body 32 is disposed between the second sheet 33 and the base absorbent body 31 as shown in FIGS. 1, 3, and 4. Further, the intermediate absorbent body 32 is disposed in the central region of the absorbent portion 3 and is disposed at a position excluding the portion where the compressed grooves 4 and 41 are formed.

  The intermediate absorbent body 32 is formed by wrapping a predetermined amount of a mixed absorbent body 321 obtained by mixing at least one Chinese herbal medicine material and absorbent pulp with an exterior sheet 322. And the effect which a Chinese medicine material has can have other functions in addition to the function which absorbs liquids, such as excrement.

  The function that the intermediate absorber 32 has can absorb a liquid such as excrement and can include, for example, a deodorizing function. Furthermore, you may make it have an effect of reducing the itching and the rash which may arise when the absorbent article 1 and skin are rubbed or stuffy. The traditional Chinese medicine material used for the intermediate absorber 32 can be appropriately selected based on the function required for the intermediate absorber 32.

  The selection of the herbal medicine material is selected based on the function required for the intermediate absorber 32 and is also considered from the viewpoint of the manufacturing process. Specifically, the particle size distribution and average particle size of the traditional Chinese medicine material are considered. For example, in forming the intermediate absorbent body 32, the relationship with the average particle diameter of the absorbent pulp mixed with the traditional Chinese medicine material is considered. When the average particle size is made larger than that of the absorbent pulp, the Chinese medicine material is scattered in the intermediate absorbent body 32, causing unevenness and the appearance is deteriorated. The average particle size of the traditional Chinese medicine material is preferably about half of the average particle size of the absorbent pulp. Specifically, 150 to 250 mesh is preferable.

  In addition, the selection of the herbal medicine material from the viewpoint of the manufacturing process is performed in consideration of the fluidity of the herbal medicine material at the time of manufacturing. Aggregation of powders may occur in the process of transporting Chinese medicine materials during production, and movement may be difficult to occur. In such a case, the fluidity of the whole Chinese herbal medicine material can be ensured by mixing other Chinese herbal medicine materials with high fluidity or increasing the mixing ratio.

  Specifically, the herbal medicine used for the intermediate absorber 32 is at least one of herbal medicines such as cocoon leaf, katsukiko, toki, ginseng, maternal herb, nine orchid grass, koi ei, yam, mulberry mushroom, and cocoon. One or more can be used. In this embodiment, kashiwa, Toki, and Katsuki are mixed at a ratio of 1: 1: 1. Thereby, while being able to provide the deodorizing function to the intermediate absorber 32, it can manufacture suitably. In addition, as a structure of the Chinese medicine material used for the intermediate | middle absorber 32, it can manufacture suitably the intermediate | middle absorber 32 also as a structure which uses a ginseng instead of said Katsuki.

  The traditional Chinese medicine material used for the intermediate absorber 32 is preferably colored. The color of the koji leaf used as a traditional Chinese medicine material is from green to brown, the color of Toki is brown, and the color of Katsuki is dark brown. By mixing Chinese medicine materials having these colors, the intermediate absorber 32 has a brownish brown color as a whole. Thereby, for example, a brightness difference (contrast) with the surrounding color of the white system is generated, and the intermediate absorbent body 32 can be suitably viewed from the top sheet 10 side.

The effects of cocoon leaves are warming the body, increasing appetite, promoting bile secretion and hemostasis, and can include abdominal pain, heartburn, diarrhea, constipation, nosebleeds, hematuria, and hemorrhoids.
As the effect of Toki, gynecological diseases can be mentioned as blood replacement, tonic and analgesic for poor blood color, coldness, and blood circulation disorder.
Examples of the efficacy of Kobushi include menstruation such as menstruation, blood purification, analgesia, sedatives, menstrual irregularities, menstrual pain, menopause, etc., chronic gastritis, duodenal ulcer, neurogenic gastritis.

The absorbent pulp mixed with the herbal medicine material can be the same as the absorbent pulp used for the base absorbent body 31. The absorbent pulp is preferably 50 to 70 g / m ² .

The herbal medicine material can use 10 to 200 g / m ² , preferably 40 to 70 g / m ² . In this embodiment, 0.0735 g is used at 47.7 g / m ² . By using this amount, it can be confirmed that the traditional Chinese medicine material is mixed in the intermediate absorber 32 through the top sheet 10. In addition, unevenness is less likely to occur in the distribution of the mixed Chinese medicine materials. In the mixed absorbent body 321, when the amount of the Chinese medicine material is less than 10 g / m ² , it is difficult to visually recognize that the Chinese medicine material is mixed through the top sheet 10. Furthermore, unevenness occurs in the distribution of the mixed Chinese medicine material. Moreover, when there are more Chinese herbal medicine materials than 200 g / m < ² >, since the quantity of the absorbed pulp in the mixed absorbent body 321 decreases, the absorption speed is deteriorated and the liquid returns easily. Moreover, since the ratio of the Chinese medicine material in the mixed absorbent body 321 is increased, the sealing performance by the exterior sheet 322 is deteriorated, and the drop of the Chinese medicine material is increased.

  As described above, the amount and ratio of the herbal medicine material and the absorbing pulp in the mixed absorbent body 321 are determined in consideration of the absorbability and productivity of the intermediate absorbent body 32 and the balance on the product appearance. Moreover, in the absorbent article 1, it is preferable that the odor emitted from the Chinese medicine material can be confirmed.

  As shown in FIG. 3, the exterior sheet 322 is a sheet that wraps a mixed absorbent body 321 made of herbal medicine material and absorbent pulp. The exterior sheet 322 is wrapped around the mixed absorbent body 321 and arranged so that the end portions of the exterior sheet 322 are stacked on the base absorbent body 31 side.

  Further, the intermediate absorber 32 is intermittently joined to the base absorber 31. Specifically, the outer absorbent sheet 322 constituting the intermediate absorbent body 32 is joined by a hot melt adhesive in which the surface on the base absorbent body 31 side and the surface of the base absorbent body 31 on the intermediate absorbent body 32 side are intermittently arranged. Is done. Here, intermittent means that the hot melt adhesive is not applied to the entire surface of the exterior sheet 322 on the base absorbent body 31 side, but the adhesive is applied so as to have a region where the hot melt adhesive is not applied. That means. For example, the adhesive is arranged on the bonding surface in the form of dots, dotted lines, lines, spirals, or the like.

The exterior sheet 322 may be a liquid-permeable sheet, and for example, a tissue can be used. Moreover, the basis weight of the exterior sheet 322 is, for example, 16 g / m ² .

<Second seat>
In the present invention, a second sheet 33 can be disposed between the intermediate absorber 32 and the top sheet 10 as necessary. As shown in FIG. 3, the second sheet 33 is disposed between the intermediate absorbent body 32 and the top sheet 10 in a folded state.

The second sheet 33 is disposed so as to cover the intermediate absorber 32, and is formed to be smaller than the region surrounded by the compressed grooves 4 and 41 in a state where the second sheet 33 is folded in half. Is preferred. Further, the second sheet 33 is formed to be the same as or larger than the area of the surface of the intermediate absorber 32 in a state where the second sheet 33 is folded in half. Specifically, the basis weight of the second sheet 33 is 20 g / m ² , and the second sheet 33 is formed by folding a sheet having a longitudinal length of 100 to 110 mm, preferably 90 to 110 mm in half.

The member used for the second sheet 33 is, for example, a fiber having a core-sheath structure in which polypropylene is used as a core and polyethylene is used as a sheath, and is formed of an air-through nonwoven fabric made of 3.3 dtex and a fiber length of 51 mm. The For example, when the second sheet 33 is used by folding a nonwoven fabric of 20 g / m ² in half, the basis weight is 40 g / m ² . The second sheet 33 is preferably formed so as to have a higher density than the top sheet 10. Since the second sheet 33 has a higher density than the top sheet 10, the liquid transfer from the top sheet 10 can be enhanced.

  Further, in the second sheet 33, the intermediate absorbent body 32 is joined to the surface on the base absorbent body 31 side in the folded state. The second sheet 33 and the intermediate absorber 32 are joined by a hot melt adhesive. By joining the intermediate absorber 32 to the second sheet 33, the intermediate absorber 32, the second sheet 33, and the top sheet 10 are more closely attached. For this reason, the user can confirm the intermediate | middle absorber 32 through the surface sheet 10 and the second sheet | seat 33 from the surface in which the surface sheet 10 in the absorbent article 1 is arrange | positioned.

<First mold prevention treatment>
Hereinafter, the first antifungal treatment, which is a feature of the present invention, will be described. The traditional Chinese medicine material contained in the absorber 30 is subjected to an antifungal treatment with a halogen antifungal agent. This is the first mold prevention treatment in the present invention. Among halogen-based antifungal agents, haloacetylene compounds having a broad antifungal spectrum in a wide pH range are preferably used. In addition, iodine compounds are preferable from the viewpoint of safety and a broad antibacterial spectrum / antifungal spectrum, and 3-iodo-2-propynylbutylcarbamate (IPBC) has a broad antibacterial, antifungal, and antialgal spectrum in a wide pH range. For example, it is effective even for small amounts of mold, yeast, algae and the like, and is usefully used as an industrial fungicide and algae.

  On the other hand, as described in JP-A No. 10-182318, haloacetylene compounds such as IPBC also have a defect of gradually decomposing and coloring at a high temperature for a long time. For this reason, there was the present condition that it was not able to apply very much to the conventional sanitary goods etc. which emphasize whiteness based on white.

  However, the absorbent article of the present invention is originally designed to include a material that tends to cause mold, a herbal medicine material, and the herbal medicine material is originally colored, so that the user can visually recognize this colored herbal medicine material. Is. For this reason, even if IPBC is decomposed and colored, the product is masked by the color of the herbal medicine itself. Thus, there is a novel point of the present invention in that a haloacetylene compound that can compensate for the disadvantage of decomposition coloring of a haloacetylene compound can be applied because of the combination of an absorbent article and a herbal medicine material.

  Although a processing method is not specifically limited, In the absorber 30, it can carry out by setting it as the structure which makes an antifungal agent contact a Chinese medicine material directly. A method of dissolving and directly adhering to a solvent such as alcohol can be exemplified. As a specific example of this embodiment, a halogen-based antifungal agent is added to a herbal medicine that has been previously pulverized to have an average particle size of 150 to 250 mesh. Spray the dissolved alcohol solution. When the Chinese herbal medicine material consists of two or more kinds, each type of Chinese herbal medicine material may be sprayed with a halogen-based antifungal solution individually, or after mixing two or more kinds of Chinese herbal medicine ingredients, The material may be sprayed with a halogen-based fungicide solution.

  The treatment amount of the halogen-based fungicide at this time can be exemplified by an amount of spraying about 0.1 to 10 L of halogen-based fungicide solution having a concentration of 4 ppm or more and 500 ppm (weight / weight) per 100 kg of herbal medicine material, for example. . If it is less than 4 ppm, the antifungal effect is not sufficient, and if it is more than 500 ppm, the effect of the above-mentioned decomposed colored products may exceed the masking effect, and the merchantability of the absorbent article may be reduced. The minimum inhibitory concentration such as IPBC is several ppm to several hundred ppm depending on the bacterial species, and since the effect is obtained only by adhering to the surface of the particulate Chinese herbal medicine material, the above-mentioned addition of a small amount is sufficient to prevent mold. is there.

  Next, the herbal medicine material sprayed with the halogen-based antifungal agent is dried to volatilize the alcohol used as the solvent. The combined use of the drying step is a preferable step because the herbal medicine material can be dried to further suppress the generation of mold. As a specific drying method, for example, in the case where IPBC is used as an antifungal agent in the present embodiment, the melting point of IPBC is 66 ° C. to 68 ° C., and therefore, it should be placed in a high temperature environment of, for example, 60 ° C. or less. Can promote drying.

  In the above embodiment, the anti-fungal treatment is applied to the Chinese medicine material by spraying a solution of the halogen-type anti-fungal agent on the surface of the Chinese medicine material, but the present invention is not limited to this. For example, the absorbent article 1 may be manufactured by manufacturing a mixture obtained by mixing a Chinese herbal medicine material and a halogen-based antifungal agent, and applying the mixture to the exterior sheet 322 constituting the absorber 30.

<Second mold prevention treatment>
The antifungal effect can be further enhanced by irradiating the herbal medicine material with gamma rays simultaneously with or after drying. This is the second antifungal treatment in the present invention. Since gamma rays can reduce the initial number of bacteria, it is a preferable step because it can further suppress the generation of mold, as in the drying step described above. However, as described in the prior art, the bacteria are completely killed. On the other hand, when irradiating such a large amount of gamma rays, there is a problem that the volatile components of the herbal medicine decrease and the aromatic function of the herbal medicine material itself decreases. For this reason, in order to maintain the merchantability of an absorbent article having an absorbent containing a traditional Chinese medicine material, a large amount of gamma rays cannot be irradiated. For this reason, this second mold prevention treatment is performed in combination with the first mold prevention treatment.

  Specifically, the irradiation amount of gamma rays is preferably 1 KGY or more and less than 5 KGY. If it is less than 1KGY, even if used in combination, the effect of reducing the initial number of bacteria is insufficient, and the synergistic effect of the two-stage fungicidal effect is not recognized. On the other hand, if it is 5 KGY or more, the fragrance function of the traditional Chinese medicine material is lowered, which is not preferable.

<Method for producing absorbent article>
The mixed absorbent body 321 obtained by mixing the above-described anti-fungal treatment Chinese medicine material and absorbent pulp at a predetermined ratio is laminated on the exterior sheet 322. And the whole is wrapped so that the mixed absorbent body 321 of the laminated Chinese herbal medicine material and absorbent pulp is wound around the exterior sheet 322. In this case, the end portions of the exterior sheet 322 enclosing the mixed absorbent body 321 are stacked on each other. This laminated portion is arranged so as to be on the base absorbent body 31 side. By disposing the portion where the exterior sheet 322 is laminated on the base absorbent body 31 side, it is possible to suppress the influence of the level difference due to the laminated portion on the surface sheet 10 side. Furthermore, it is possible to suppress the influence on the appearance due to the step and the lamination of the sheets. In the present embodiment, the intermediate absorbent body 32 is formed such that the mixed absorbent body 321 containing the herbal medicine material is arranged in a planar shape and the exterior sheet 322 is wrapped, but is not limited thereto. For example, the mixed absorbent body 321 may be disposed at a substantially central portion between two laminated exterior sheets 322, and the peripheral portions of the two exterior sheets 322 may be joined with a hot melt adhesive.

  The mixed absorbent body 321 is compressed by applying a predetermined pressure in a state of being wrapped in the exterior sheet 322, and is formed into a sheet with a predetermined thickness. By this compression treatment, the voids in the intermediate absorber 32 are reduced, and the volume of the intermediate absorber 32 can be reduced. Further, by being compressed, when a constant pressure is applied during use, it becomes difficult to discharge liquid such as excrement once absorbed, and liquid return can be suppressed. Furthermore, when the liquid such as excreta is absorbed, the liquid can be prevented from diffusing on the top sheet 10.

  The pressure applied to the intermediate absorber 32 in this compression treatment is preferably 2.0 to 3.3 kgf. When the pressure is less than 2.0 kgf, the liquid permeation rate in the intermediate absorbent 32 is improved, but the restraining force by the exterior sheet 322 is small during conveyance during production, and the mixed absorbent is dropped. In addition, when the pressure is higher than 3.3 kgf, the permeation rate of the liquid such as excrement in the intermediate absorbent body 32 is slow.

  Next, the intermediate absorber 32 is joined to the second sheet 33. Specifically, first, the second sheet 33 is laminated on the top sheet 10 in a folded state, and joined together with a hot melt adhesive. The intermediate absorbent body 32 is laminated on the surface of the second sheet 33 on the base absorbent body 31 side, and is joined by a hot melt adhesive. In this case, the intermediate absorbent body 32 is formed into a sheet having a predetermined thickness by the above-described compression process, and is cut into a predetermined size and laminated on the second sheet 33.

  The length of the intermediate absorber 32 in the longitudinal direction LD is 55 to 85 mm, preferably 45 to 100 mm. The length in the width direction WD is 20 to 30 mm, preferably 20 to 35 mm. In the present embodiment, the length in the longitudinal direction LD is 65 mm, and the length in the width direction WD is 28 mm. When the length in the longitudinal direction LD is smaller than 45 mm, or the length in the width direction WD is smaller than 20 mm, it is difficult to visually recognize the Chinese medicine material when the basis weight is suitable for the intermediate absorber 32. Become. In addition, if a larger amount of Chinese medicine material necessary for deodorization is encapsulated, there is an adverse effect such as dropping off the Chinese medicine material, which makes conveyance difficult. When the length in the longitudinal direction LD is greater than 85 mm, or when the length in the width direction WD is greater than 35 mm, the intermediate absorber 32 overlaps with the compressed grooves 4 and 41 surrounding the periphery. Then, the portion where the intermediate absorbent body 32 overlaps is compressed together with the compressed grooves 4 and 41, so that the herbal medicine material is visually recognized by the compressed grooves 4 and 41 and may be regarded as foreign matter.

  Side sheets 11 are disposed along the longitudinal direction LD on both sides of the width direction WD on the opposite side of the top sheet 10 from the second sheet 33, and the hot melt adhesive together with the top sheet 10 and the side sheets 11. And / or by embossing.

  Next, a base absorbent body 31 is further laminated on the surface of the laminated intermediate absorbent body 32 opposite to the second sheet 33 so as to cover the intermediate absorbent body 32, and the base absorbent body 31 and the top sheet 10 are attached. The compressed grooves 4 and 41 are formed so as to be integrated. In this case, the compressed grooves 4 and 41 are formed at positions excluding the arrangement region of the intermediate absorber 32. In other words, the intermediate absorber 32 is disposed in a region surrounded by the compressed groove 4 and the compressed groove 41. The intermediate absorber 32 is disposed at the approximate center in the width direction WD and the longitudinal direction LD of the absorber 3 and is disposed at a place where the compressed grooves 4 and 41 are not formed by the embossing process. Accordingly, the herbal medicine material is not compressed by the compressed grooves 4 and 41. For this reason, it prevents that the visibility on the external appearance by the color of a Chinese medicine material appearing to be scattered by compressing the Chinese medicine material by the compression grooves 4 and 41 deteriorates. Further, by forming the compressed grooves 4 and 41, a predetermined rigidity can be given to the absorbent article 1, so that the absorbent article 1 is swung or liquid such as excrement diffuses on the surface of the absorbent portion 3. This can be suppressed.

  Moreover, the intermediate | middle absorber 32 and the base absorber 31 are intermittently joined by the hot melt adhesive in the surface which mutually contacts. Specifically, on the surface where the intermediate absorbent body 32 and the base absorbent body 31 are in contact with each other, the hot melt adhesive is intermittently disposed so that they are joined to each other. Since the hot melt adhesive is liquid-impermeable, disposing the hot melt adhesive intermittently does not impede liquid permeation from the intermediate absorbent body 32 to the base absorbent body 31.

  Therefore, the intermediate absorbent body 32 is bonded to the surfaces contacting the second sheet 33 and the base absorbent body 31. In addition, since the second sheet 33 is joined to the topsheet 10, the intermediate absorbent body 32 is indirectly joined to the topsheet 10, and the topsheet 10 and the base absorbent body 31 are joined indirectly. Thereby, it can suppress that a Chinese herbal medicine material comes out of the exterior sheet | seat 322 when the absorbent article 1 twists at the time of mounting | wearing of the absorbent article 1. FIG. Furthermore, the visibility of the Chinese medicine material in the intermediate | middle absorber 32 can be maintained from the surface sheet 10 side.

  Moreover, it is preferable that the intermediate | middle absorber 32 is arrange | positioned in the position assumed that the body excretion opening | mouth in the absorbent article 1 contacts at least. By arrange | positioning in the said position, liquids, such as excrement, are discharged | emitted and can be absorbed immediately. Moreover, since it arrange | positions in the position nearest to liquids, such as excrement which is an odor generation source, a deodorizing function can be exhibited suitably.

  The back sheet 20 is disposed on the surface of the base absorbent body 31 opposite to the surface on which the intermediate absorbent body 32 is disposed, and is joined by a hot melt adhesive.

  According to the present embodiment, the intermediate absorber 32 is joined to the second sheet 33. For this reason, the intermediate | middle absorber 32, the 2nd sheet | seat 33, and the surface sheet 10 can be stuck, and a user can recognize presence of the intermediate | middle absorber 32 from the surface sheet 10 side. Thereby, a user can make a user recognize the feature of the absorptive article 1 easily. In the present embodiment, the second sheet 33 is disposed between the top sheet 10 and the intermediate absorbent body 32, but the second sheet 33 is not disposed, and the intermediate sheet is disposed between the top sheet 10 and the base absorbent body 31. The body 32 may be arranged.

  Moreover, in this embodiment, although the absorbent article 1 does not form what is called a three-dimensional gather, you may arrange | position a three-dimensional gather. For example, the end of the side sheet 11 on the side of the top sheet 10 is folded back along the longitudinal direction LD, the thread rubber is sandwiched in a stretched state at a constant magnification, and fixed to the folded portion of the side sheet 11 to form a three-dimensional gather. can do.

  Moreover, in this embodiment, although the intermediate | middle absorber 32 of the absorbent article 1 is used as a sanitary napkin, it is not restricted to this. For example, the intermediate absorbent body 32 can be similarly disposed in a panty liner or a diaper (for adults and children). Furthermore, it is possible to use the intermediate absorber 32 independently. For example, the intermediate absorbent body 32 can be disposed so as to be sandwiched between cloth napkins.

  As described above, according to the present invention, in the absorbent article 1 having the absorbent body 30 containing the traditional Chinese medicine material, by applying the anti-mold treatment by spraying the halogen-type anti-mold agent to the traditional Chinese medicine material, It is possible to prevent the occurrence of mold in the traditional Chinese medicine material without impairing the function to be provided. Moreover, generation | occurrence | production of mold | fungi can be prevented more effectively by irradiating a predetermined amount of gamma rays to a Chinese medicine material in addition to the said process.

  Moreover, the deodorizing effect can be expected from the absorbent article 1 by using the traditional Chinese medicine material for the intermediate absorbent body 32.

  Further, when the absorbent article 1 is attached to the user's body and heated by the body temperature, the volatile components contained in the Chinese medicine material are used after passing through the exterior sheet 322, the second sheet 33, and the top sheet 10 wrapped with the Chinese medicine material. Penetrates the person's skin. With this action, for example, it is possible to expect other effects such as reducing itinerary-specific symptoms such as itching. At this time, since the halogen-type fungicide fixed to the Chinese medicine powder does not volatilize at body temperature, it stays on the surface of the Chinese medicine material, and the fungicide does not act on the user's body.

  Moreover, when the intermediate | middle absorber 32 absorbs the bodily fluid discharged | emitted from the user's body, a water-soluble component will melt | dissolve from the Chinese medicine material mixed with the pulp, and it will infiltrate a wearer's skin. At this time, since the halogen-based antifungal agent hardly dissolves in water, it stays on the surface of the Chinese herbal medicine and is safe because the antifungal agent does not come into contact with the user's body.

  In addition, in this invention, it is also possible to perform a mold-proofing process with a higher effect by performing in combination with another mold-proofing process after the mold-proofing process by a halogen-type mold-proofing agent. Specifically, for example, other antifungal agent treatment such as treatment with paraben and hinokitiol, sterilization with electromagnetic radiation other than gamma rays, and the like can be performed in combination.

<Other embodiments>
FIG. 5 is a top view of an absorbent article according to another embodiment of the present invention, and FIG. 6 is a schematic cross-sectional view of the intermediate absorbent body 32a. In this embodiment, the halogen antifungal agent is not directly attached to the surface of the Chinese herbal medicine material, and the Chinese herbal medicine material is in contact with the sheet containing the halogen antifungal agent, so that The point which is the aspect which gives a halogen-type antifungal agent indirectly to a Chinese medicine material differs from said 1st embodiment.

  Specifically, as shown in FIG. 6, the intermediate absorber 32a is composed of two upper and lower exterior sheets 322a and a mixed absorber 321 disposed therebetween, and the outer peripheral edge of the intermediate absorber 32a is heated. Or it is joined with an adhesive or the like. A halogen-based antifungal agent 5 is previously applied and formed on both inner surface sides of the exterior sheet 322a by a conventionally known printing method or the like, and a mixed absorbent body 321 is disposed at the center. As a result, as shown in FIG. 5, in a plan view, the mixed absorbent body 321 containing the herbal medicine material is disposed within the application range of the halogen-based antifungal agent 5. By disposing within this range, the antifungal effect of the antifungal agent can surely act on the whole Chinese herbal medicine material.

  The halogen-type fungicide 5 may be applied by converting the halogen-type fungicide 5 into an ink or coloring the ink. By coloring, as shown in FIG. 5, the colored halogen-based antifungal agent 5 is formed along the outer peripheral edge of the intermediate absorber 32a, and it is easy for the consumer to visually recognize that the herbal medicine is blended. There is an effect.

  Examples of the present invention will be described below, but the present invention is not limited to the following examples.

<Example 1>
The intermediate absorber 32 was produced as follows. Three kinds of Kampo, Toki, and Katsuki were used as herbal medicine materials. 3 L of an alcohol solution of IPBC having a concentration of 300 ppm was sprayed on 300 kg of each herbal medicine material. After the herbal medicine material sprayed with IPBC was dried, each Chinese medicine material was mixed at a ratio of 1: 1: 1 by 15.9 g / m ² each basis and 0.0245 g / piece, respectively. It was mixed with absorbent pulp having a basis weight of 58.7 g / m ² and 0.09 g / piece and wrapped in a tissue of 16 g / m ² to form a sheet. And the said intermediate | middle absorber 32 was inserted in the absorbent article 1, and the sample was produced.

<Example 2>
In the same manner as in Example 1 except that 3 KGY gamma rays were further irradiated to the dried Chinese medicine material after spraying the alcohol solution of IPBC, i.e., gamma rays were irradiated in addition to IPBC spraying as an antifungal treatment. The example created by doing this was taken as Example 2.

<Comparative Example 1>
Except that the IPBC alcohol solution was not sprayed and the subsequent drying step was not performed, that is, a comparative example 1 was prepared by performing only gamma ray irradiation as a mold-proofing treatment.

<Comparative example 2>
An example prepared in the same manner as Comparative Example 1 except that the dose of gamma rays was set to 5 KGY was set as Comparative Example 2.

  Table 1 shows the results of evaluating the antifungal treatment effect of the absorbent article 1 for the examples and comparative examples.

The measurement of the effect of the mold prevention treatment of the absorbent article 1 was performed according to the following procedure.
1) Under the conditions of constant temperature and humidity at a temperature of 28 ° C. and a humidity of 95%, 18 samples of each example of the absorbent article 1 and the comparative example are left for 4 weeks.
2) A visual inspection is performed 4 weeks after the start of standing, and the number of molds and the rate of occurrence are measured.
3) The aromaticity (odor) of the Chinese medicine was measured by sensory evaluation 4 weeks after the start of standing.

  Furthermore, Table 2 shows the results of evaluating the details of the effect of antifungal treatment by gamma ray irradiation on Chinese medicine materials.

The detailed measurement of the antifungal effect by gamma irradiation on Chinese herbal medicine materials was carried out by the following procedure.
1) In the same manner as in Example 1, among the Chinese herbal medicines used as samples, the mixture of three kinds of kakiha, Toki and Katsuki was mixed at a ratio of 1: 1: 1.
2) The Chinese medicine material used as each sample was subjected to spraying of an alcohol solution of IPBC and the subsequent drying step under the same conditions as in Example 1.
3) As described above, the number of fungi that had been allowed to stand on the medium for 10 days was compared between samples irradiated with anti-fungal treatment with IPBC and irradiated with 3KGY gamma rays and those not irradiated with gamma rays.
4) As the medium, 3M Yeast & Mold Petri Film was used and allowed to stand at room temperature for 10 days.

  As can be seen from Table 1, generation of mold cannot be prevented only by irradiating with 3 KGY gamma rays as seen in the results of Comparative Example 1. However, on the other hand, as can be seen from the result of Comparative Example 2, when gamma rays of 5 KGY or more are irradiated, generation of mold can be prevented, but the aromatic function of Chinese medicine is impaired. As can be seen from the results of Example 1, mold prevention treatment with IPBC can effectively prevent mold generation while maintaining the aromatic function of Chinese medicine. In addition, as can be seen from Table 2, by performing the anti-fungal treatment by the irradiation of 3KGY gamma rays in addition to the anti-fungal treatment by IPBC, it is possible to reduce the initial number of fungi. This can be prevented more reliably.

DESCRIPTION OF SYMBOLS 1 Absorbent article 4,41 Compression groove 10 Top sheet 20 Back sheet 30 Absorber 31 Base absorber 32 Intermediate absorber 33 Second sheet 321 Mixed absorber 322 Exterior sheet

Claims (11)

An absorbent article comprising at least a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet,
The absorber includes at least one kind of herbal medicine material,
The herbal medicine material is an absorbent article obtained by performing a first antifungal treatment with a halogen-based antifungal agent.   The absorptive article according to claim 1 in which said halogen mold prevention agent in said 1st mold prevention processing is 3-iodo-2-propynyl butyl carbamate (IPBC).   The absorptive article according to claim 1 or 2 by which said halogen antifungal agent is given to the surface of said Chinese medicine material in said 1st antifungal treatment.   The absorbent article according to claim 1 or 2, wherein in the first antifungal treatment, a mixture obtained by mixing the Chinese herb medicine material and the halogen antifungal agent is applied to a sheet constituting the absorber.   The absorbent article according to claim 1 or 2, wherein, in the first antifungal treatment, the Chinese medicine material is in contact with a sheet containing the halogen antifungal agent.   6. The absorbent article according to claim 5, wherein the sheet is formed by applying the halogen-based antifungal agent to the surface of the sheet, and the Chinese medicine material is disposed within the application range in a plan view of the absorbent article. .   The absorptive article according to claim 6 using the coloring ink containing said halogen system antifungal agent, and said application is printing on said sheet surface. An absorbent article comprising at least a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body disposed between the top sheet and the back sheet,
The absorber includes at least one kind of herbal medicine material,
The method of manufacturing an absorbent article, wherein the Chinese herbal medicine material is subjected to a first antifungal treatment with a halogen-type antifungal agent and a second antifungal treatment with gamma irradiation.   The method for producing an absorbent article according to claim 8, wherein the halogen-based anti-fungal agent in the first anti-fungal treatment is 3-iodo-2-propynyl butyl carbamate (IPBC).   10. The absorbent article according to claim 8 or 9, wherein the halogen antifungal agent is a solution having a concentration of 4 ppm or more and 500 ppm (weight / weight) or less, and the solution is sprayed from 0.1 L to 10 L per 100 kg of herbal medicine material. Method.   The method for producing an absorbent article according to claim 8 or 9, wherein the gamma ray irradiation dose in the second antifungal treatment is 1 KGY or more and less than 5 KGY.

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