JP5642936B2 - Anus or genital area cleaning sheet - Google Patents

Description

  The present invention relates to an anus or genital area cleaning sheet in which a fiber sheet is impregnated with an aqueous detergent.

  In order to wipe off dirt such as stool and urine attached to the buttocks and excretory part when a baby or a cared person's disposable diaper is replaced, a so-called wiping sheet that is a wet type disposable sheet is widely used. A wet-type disposable sheet is also known for cleaning the excretory part when the sanitary napkin is replaced.

  Patent Document 1 discloses an oil-in-water dispersion emulsion in a nonwoven fabric in which rayon fibers, a hydrophilic polyethylene terephthalate fiber, and a fiber web made of a heat-meltable resin are entangled three-dimensionally in order to improve the wipeability of feces and the like. A wet tissue impregnated with is disclosed.

  However, when the wet tissue of Cited Document 1 is used, for example, when replacing disposable diapers, the color of the stool touches the skin with solid stool, watery stool, or diarrheal stool, and the color cannot be removed no matter how many times it is wiped. There was room for improvement in the wipeability of stool.

  Cited Document 2 discloses a skin cleaning sheet obtained by impregnating a hydroentangled nonwoven fabric with an aqueous cleaning composition, the aqueous cleaning composition comprising a makeup containing a nonionic surfactant and an oil. A skin-cleaning sheet, particularly for facial cleansing, that removes up and sebum stains is disclosed. In the embodiment specifically disclosed as a sheet material having excellent cleaning performance in the cited document 2, in order to obtain a high detergency against makeup dirt as a sheet, a synthetic fiber having a very fineness of 0.5 d or less is used. In addition, a large amount of the nonionic surfactant in the aqueous detergent component permeating into the sheet is blended.

  However, when the sheet of the cited document 2 is used for wiping the stool around the anus or the genital area, the sheet is composed of synthetic fibers with a fine fineness. The excrement is difficult to be taken into the sheet and cannot be easily wiped off.

  Further, as a deodorant-containing sheet that can be used for various deodorization applications, a sheet in which activated carbon, an antibacterial agent, or the like is supported on a fiber sheet made of pulp fiber or the like is known. Moreover, in absorbent articles, such as a disposable diaper, what has the deodorizing effect which prevented the smell of excrement from coming out of a diaper using deodorizers, such as activated carbon, is proposed.

  For example, Patent Document 3 describes an activated carbon fine particle-containing sheet containing activated carbon fine particles, a fibrous polyvinyl alcohol-based binder, and pulp fibers. Patent Document 4 describes a deodorant antibacterial fiber product including a cancrinite-like mineral containing a metal having antibacterial properties, a clay mineral, and kraft pulp. Patent Document 5 describes a deodorant fiber product including deodorant particles obtained by copolymerizing a monomer component containing a crosslinkable vinyl monomer and a vinyl monomer having a heteroaromatic ring.

  Patent Document 6 describes a disposable diaper in which a backing member is attached to the outer surface of the back sheet via a fragrance zone. The perfume zone contains a binder having a microcapsule for masking or absorbing odor, and the microcapsule is ruptured when the lining member is peeled off during use, thereby providing a deodorizing effect.

  According to the techniques described in Patent Documents 3 to 6, a considerable deodorizing effect is achieved. However, in the sheet used for wiping the stool around the anus or the genital area or for cleaning menstrual blood, the deodorizing effect is further improved. Improvement is desired.

  On the other hand, a small amount of urine adhering to the wearer's body during use of the diaper may be denatured over a long period of time, thereby generating a urine odor. This is particularly the case in nursing care facilities and hospitals where the diaper wearer has few opportunities to bathe or the genital area is not sufficiently cleaned due to the physical condition of the care recipient and other factors. Further, after the diaper is discarded in the trash after use, the urine adhering to the diaper may rot in the trash, thereby generating a urine odor. A technique for effectively suppressing these unpleasant urine odors has not yet been proposed.

JP 2006-34997 A JP 2001-314342 A JP-A-9-173429 JP 2006-307404 A JP 2008-63711 A Special Table 2000-506426

  Accordingly, an object of the present invention is to provide an anus or genital area cleaning sheet that is excellent in wiping off excrement and hardly generates urine odor.

  The present inventors have found that phenolic compounds and indoles generated from urine are components that have a high contribution to urine odor, and these components are produced by the action of β-glucuronidase derived from bacterial cells on urine. It was found that it increased significantly.

  The present invention has been made based on the above knowledge, the aqueous cleaning agent is an anus or genital area cleaning sheet impregnated with 1 to 10 parts by weight with respect to 1 part by weight of the fiber sheet, the aqueous cleaning agent, It solves the above-mentioned problem by providing a sheet for cleaning the anus or genital area, characterized in that it contains 0.001 to 0.1% by weight of a β-glucuronidase inhibitor and 80 to 99.9% by weight of water. is there.

  The anus or genital area cleaning sheet of the present invention excels in excretion of excrement and contains a β-glucuronidase inhibitor that suppresses generation / increase of causative substances of urine odor. Demonstrates excellent deodorizing effect on objects.

FIG. 1 is a perspective view schematically showing a first embodiment of the anus or genital area cleaning sheet of the present invention. FIG. 2 is a partially enlarged view of a cross section taken along the line II-II in FIG. FIG. 3 is a perspective view schematically showing a second embodiment of the anus or genital area cleaning sheet of the present invention. 4 is a partially enlarged view of a section taken along line IV-IV in FIG.

  Hereinafter, the anus or genital periphery cleaning sheet (hereinafter also referred to as a cleaning sheet) of the present invention will be described based on its preferred embodiments. 1 and 2 show a first embodiment of the cleaning sheet of the present invention.

  The cleaning sheet 1A of the first embodiment is formed by impregnating a predetermined amount of a water-based cleaning agent into a fiber sheet, and uses a nonwoven fabric (spun lace nonwoven fabric) as the fiber sheet. As shown in FIGS. 1 and 2, the cleaning sheet 1 </ b> A (nonwoven fabric) has a convex portion 2 and a concave portion 3 formed as a whole. The aqueous detergent contains 0.001 to 0.1% by weight of a β-glucuronidase inhibitor and 80 to 99.9% by weight of water as essential components. Hereinafter, this aqueous cleaning agent will be described.

  The aqueous detergent used in the present invention contains a β-glucuronidase inhibitor. By including a β-glucuronidase inhibitor in the cleaning sheet around the anus or genital area, when the excrement adhered to the body is wiped off with the cleaning sheet, or the body is wiped with the cleaning sheet in advance. In this way, a β-glucuronidase inhibitor can be present on the wearer's body. A β-glucuronidase inhibitor can suppress the increase of phenolic compounds and indoles, which are causative substances of urine odor, and can continuously suppress the generation of unpleasant urine odor. In addition, for example, when the used cleaning sheet is rolled up with a used diaper and discarded, an unpleasant urine odor is generated in the disposable diaper due to the action of the β-glucuronidase inhibitor. It becomes possible to suppress.

  β-glucuronidase is an enzyme that hydrolyzes a compound (glucuronide) in which various alcohols, phenols, amines and the like are conjugated with glucuronide, and is present in many organisms such as bacteria, fungi, plants, and animals. In the present invention, β-glucuronidase derived from bacteria and fungi is important because microorganisms are greatly involved in the degradation of urine excreted outside the body. Specific examples include β-glucuronidase derived from Escherichia coli, Lactobacillus brevis, Propionibacterium acnes, Clostridium perfringens, Staphylococcus haemolyticus, Streptococcus agalactiae, Streptococcus pyogenes, Haemophilus somunus, Shigela sonnei, Aspergillus niger and the like. Β-glucuronidase derived from these microorganisms is classified into an enzyme group having a common domain. Furthermore, β-glucuronidase derived from human plasma is also classified into a similar protein group.

  The β-glucuronidase inhibitor used in the present invention is a β-glucuronidase inhibitor whose activity is suppressed by 60% or more by adding 0.1 wt% in the reaction solution in the following method for measuring the β-glucuronidase activity inhibition rate. The thing which shows activity. Furthermore, it is preferable that the activity is suppressed by 80% or more by adding 0.01% by weight in the reaction solution.

<Method for measuring inhibition rate of β-glucuronidase activity>
100 μL of 2 mM p-nitrophenyl-β-D-glucuronide (PNPG) aqueous solution, 40 μL of 0.5 M phosphate buffer (pH 6.8), 38 μL of ion-exchanged water, various compounds or plant extracts in a γ-ray sterilized container 2 μL of 10 or 1 wt% DPG (dipropylene glycol) solution was added, followed by addition of 20 μL of β-glucuronidase aqueous solution adjusted to 16 units / mL, and the enzyme reaction was performed in a 37 ° C. constant temperature bath for 2 hours. For some compounds, the same experiment was conducted for a 0.1 wt% DPG solution (the concentrations of the supplied compound and the plant extract in the reaction solution were 0.1 wt% and 0.00%, respectively). 01% by weight and 0.001% by weight). In addition, the reaction was performed in the same manner for 2 hours by using DPG instead of the compound and plant extract as a control and using each sample and control with ion-exchanged water added instead of an enzyme solution as a blank. It was. The reaction solution was diluted with 0.2 M glycine buffer (pH 10.4), and the absorbance at a wavelength of 400 nm was measured. From the measured value, the β-glucuronidase activity inhibition rate is determined according to the following formula. In the following formula, change in control absorbance = (absorbance of control−absorbance of blank for each control), and change of sample absorbance = (absorbance of sample−absorbance of blank for each sample). β-glucuronidase activity inhibition rate (%) = [(control absorbance change−sample absorbance change) / (control absorbance change) × 100

  As the β-glucuronidase inhibitor in the present invention, those having the aforementioned β-glucuronidase inhibitory activity can be used. Specifically, for example, plant extracts such as goby tannin, tendered yak, akebi; glucarolactone, globanone, mussenone delta, ambrade, sibetone, oxalide, methyl octyne carbonate, estragole, musk TM-II, musk Z-4, 2-phenylcyclopentenone, vetiverol, methylionene-G, cyclamenal hydride, noukaton, D-glucaro-1,4-lactone, cis-jasmon, turpinyl acetate, orbitone, linalyl acetate, phenylethyl isoamyl ether, methyl ionene-A Perfumes such as Muscon, and cationic surfactants can be used. Commercially available products can be used as the cationic surfactant, and examples thereof include sanizol and coatamine (both trade names) manufactured by Kao. Sanizole includes Sanizol B-50 (alkyl benzyl dimethyl ammonium chloride), Sanizole C (alkyl benzyl dimethyl ammonium chloride), Sanizole P (cetyl phosphoric acid benzalkonium), and the like. Coatamine includes coatamine 24P (lauryltrimethylammonium chloride), coatamine 60W (cetyltrimethylammonium chloride), coatamine 86P (conctearyltrimethylammonium chloride), coatamine 86W (stearyltrimethylammonium chloride), coatamine D2345P (dialkyldimethylammonium chloride). ), Cotamine D86P (distearyldimethylammonium chloride), Cotamine E-80K (octadecyloxypropyltrimethylammonium chloride) and the like.

  In the present invention, as the β-glucuronidase inhibitor, those isolated from animals and plants may be used, or those chemically synthesized may be used. In addition, plant extracts such as essential oils containing these compounds, for example, vetiver oil, basil oil, clove oil, cinnamon oil, grapefruit oil and the like may be used as they are as β-glucuronidase inhibitors. Two or more of these compounds or plant extracts may be used in combination.

  In the present invention, the β-glucuronidase inhibitor is preferably at least one selected from the group consisting of the aforementioned plant extract, fragrance, and cationic surfactant, and in particular, from the plant extract and the cationic surfactant. One or more selected from the group consisting of In particular, from the viewpoint of the enzyme inhibitory effect and the dispersion stability of the aqueous detergent, gobicitannin is preferred as the plant extract, glucarolactone and globanone are preferred as the fragrance, and sanizole is preferably used as the cationic surfactant. .

  The concentration of the β-glucuronidase inhibitor in the aqueous detergent used in the present invention is 0.01 to 2.0% by weight, particularly 0.05 to 1.0% by weight, especially 0.1 to 0.5% by weight. % Is preferable in terms of deodorizing effect, storage stability of chemicals, wiping properties, skin irritation, and odor transfer to other products.

  Further, the concentration of water in the aqueous cleaning agent used in the present invention is 80 to 99.9% by weight, particularly 85 to 99.7% by weight, and particularly 90 to 99.5% by weight. It is preferable in terms of use feeling such as slime.

The aqueous detergent used in the present invention preferably further contains a nonionic surfactant in addition to the aforementioned β-glucuronidase inhibitor and water. By including a nonionic surfactant in the water-based cleaning agent, the stool color wiping property is further improved. The main cause of the stool color is bilirubin is hemoglobin metabolite, non-ionic surfactants are, effectively acting on the bilirubin.

  The nonionic surfactant to be contained in the aqueous detergent is preferably HLB 8-16, more preferably 13-14, considering the use in aqueous systems and the ability to wipe off the stool color attached to the skin. It is. The molecular weight of the nonionic surfactant is preferably 300 to 1000, more preferably 550 to 750. When the HLB and molecular weight of the nonionic surfactant contained in the aqueous detergent are within the above ranges, the aqueous detergent is more preferable because it is easy to achieve both good cleaning performance and stability. In the present specification, the molecular weight means a value determined by the sum of products of the atomic weight and the number of atoms based on the chemical formula unless otherwise specified.

  Note that HLB is an index indicating a hydrophilic-lipophilic balance, and in the present invention, a value calculated using the following equation by Oda and Teramura et al. Is used. HLB = (Σinorganic value / Σorganic value) × 10

  In addition, as another effect of using a nonionic surfactant whose HLB and molecular weight are in the above ranges, the aqueous detergent impregnated in the fiber sheet is likely to be released to the skin, that is, does not migrate to the skin. In addition, the amount of the water-based cleaning agent held on the fiber sheet is reduced. In the cleaning sheet of the present invention containing the nonionic surfactant, it is possible to reduce the amount of water-based cleaning agent impregnated into the fiber sheet to some extent due to the effect of reducing the amount of the sheet retained. Even if the amount is reduced, the water-based cleaning agent is excellent in releasability, so the amount of the water-based cleaning agent that migrates to the skin is substantially the same as before the amount of impregnation is reduced. Further, when a water-decomposable sheet (third embodiment), which will be described later, is used as the fiber sheet according to the present invention, the fiber sheet is water-degradable (a property that quickly disintegrates at the fiber level when thrown into a large amount of water). Therefore, if the amount of impregnation of the aqueous detergent increases, the wet strength of the fiber sheet decreases, and the operability may decrease, such as the fiber sheet tearing during the stool wiping operation. By using the ionic surfactant, the amount of impregnation can be reduced, so that such inconvenience due to water disintegration can be avoided. Moreover, reduction of the amount of water-based cleaning agent impregnation is also advantageous in terms of production cost.

  As the nonionic surfactant, a nonionic surfactant having a polyalkylene oxide skeleton in the main chain is 90% by weight or more, particularly 95% by weight or more, especially 100% by weight in the total nonionic surfactant. The inclusion is preferred.

  As the nonionic surfactant having the polyalkylene oxide skeleton in the main chain, a compound represented by the following general formula (1) (polyethylene glycol higher fatty acid ester), a compound represented by the following general formula (2) ( Use of one or more selected from the group consisting of (polyoxyethylene alkyl ether) and a compound represented by the following general formula (3) (polyoxyalkylene alkyl ether) is less irritating to the skin, Since the wiping property of the attached stool color is high, it is preferable.

_{R 1 COO- (CH 2 CH 2} O) n -H (1)
[In the formula _(1), R 1 CO represents an acyl group of a saturated or unsaturated 4 to 30 carbon atoms, n is a number of 1 to 50 in weight average. ]

In the formula (1), R ₁ CO represents a saturated or unsaturated acyl group having 4 to 30 carbon atoms, particularly those having 10 to 22 carbon atoms, such as caprynoyl group, lauroyl group, myristoyl group, palmitoyl group, stearoyl. Groups are preferred. Moreover, n shows the number of 1-50 by a weight average, and especially 10-30 are preferable since the wiping property of the color of the stool attached to skin becomes higher. Examples of the polyethylene glycol higher fatty acid ester represented by the general formula (1) include polyoxyethylene (n = 12) monolaurate.

_{R 2 O- (CH 2 CH 2} O) n -H (2)
[In the formula (2), R ₂ represents a hydrocarbon group and a saturated or unsaturated straight-chain or branched-chain having 4 to 30 carbon atoms, n is a number of 1 to 50 in weight average. ]

In the above formula (2), R ₂ represents a linear or branched, saturated or unsaturated hydrocarbon group having 4 to 30 carbon atoms, particularly a saturated or unsaturated alkyl group having 4 to 30 carbon atoms, especially Preferred are those having 12 to 18 carbon atoms, such as lauryl group, myristyl group, palmityl group, stearyl group, and oleyl group. Moreover, n shows the number of 1-50 by a weight average, and especially 4-10 are preferable since the wiping property of the color of the stool attached to the skin becomes higher. Examples of the polyoxyethylene alkyl ether represented by the general formula (2) include polyoxyethylene (n = 9) lauryl ether, polyoxyethylene (n = 5) lauryl ether, and the like.

_{R 3 O- (CH 2 CH 2} O) n - (CH 2 CH (CH 3) O) m -H (3)
[In the formula (3), R ₃ represents a linear or branched hydrocarbon group having 4 to 30 carbon atoms and a saturated or unsaturated hydrocarbon group, n represents a weight average of 0 to 50, and m represents a weight average. The number of 1-50 is shown. ]

In said formula (3), R < ₃ > shows a C4-C30 linear or branched and saturated or unsaturated hydrocarbon group, especially a C4-C30 saturated or unsaturated alkyl group. Particularly preferred are those having 12 to 22 carbon atoms, such as lauryl group, myristyl group, palmityl group, stearyl group, and oleyl group. Moreover, n shows the number of 0-50 on a weight average, and especially 4-12 are preferable since the wiping property of the color of the stool attached to the skin becomes higher. Moreover, m shows the number of 1-50 by a weight average, and especially 1-10 are preferable since the wiping property of the color of the stool attached to the skin becomes higher. Examples of the polyoxyalkylene alkyl ether represented by the general formula (3) include polyoxyethylene (n = 7) polyoxypropylene (n = 2.5) lauryl ether, polyoxyethylene (n = 7) poly Examples thereof include oxypropylene (n = 4.5) lauryl ether.

  In the present invention, the nonionic surfactants can be used alone or in combination of two or more, and when combining two or more nonionic surfactants, the above formulas (1) to ( It is preferable to combine only with the structure shown in 3).

  The concentration of the nonionic surfactant in the aqueous detergent used in the present invention is 0.1 to 1% by weight, particularly 0.2 to 1% by weight, and particularly 0.3 to 1% by weight. From the viewpoint of the wiping property of the stool color attached to the skin and the feeling of use such as stickiness and slime feeling.

  The aqueous detergent used in the present invention can contain silicone oil. Silicone oil is for imparting an antifoaming effect, and examples of silicone oil include oil type, oil compound type, solution type, powder type, solid type, emulsion type, and self-emulsifying type. From the viewpoint of safety, an emulsion type silicone oil that can also be used as a food additive is preferable. Examples of the silicone oil include straight silicone oils such as dimethyl silicone oil, methylphenyl silicone oil and methyl hydrogen silicone oil, and modified silicone oils such as reactive silicone oil and non-reactive silicone oil. From this point, a silicone oil emulsified with a nonionic active agent (for example, sorbitan fatty acid ester) is preferable. Silicone oils can be used alone or in combination of two or more.

  The concentration of the silicone oil in the aqueous detergent used in the present invention is 0.001 to 0.1% by weight, particularly 0.002 to 0.1% by weight, especially 0.03 to 0.08% by weight. It is preferable in terms of defoaming property, feeling in use, and stability of the system.

  As described above, when the aqueous detergent contains silicone oil, it is preferable to further contain silica. Silica is for stabilizing the defoaming effect of silicone oil. As silica, 99% or more is made of silicon dioxide, and examples include dense A-type silica and loose-structure B-type silica. .

  The concentration of silica in the aqueous detergent used in the present invention is 0.0001 to 0.01% by weight, particularly 0.0002 to 0.01% by weight, especially 0.003 to 0.008% by weight. Is preferable from the viewpoint of improving the defoaming property.

  In the aqueous detergent used in the present invention, a polyhydric alcohol or glycol ether can be blended for the purpose of improving the feeling of use and the wiping property of stool color attached to the skin. Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, glycerin, pentaerythritol, sorbitol, and the like. Examples of the glycol ether include Ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol mono Examples include ethyl ether and ethylene glycol monophenyl ether. These polyhydric alcohols and glycol ethers can be used alone or in combination of two or more.

  Among these, ethylene glycol, propylene glycol, isoprene glycol, dipropylene glycol, glycerin, 1,3-butylene glycol, sorbitol, and diethylene glycol monoethyl ether are preferable from the viewpoint of use feeling, and further propylene glycol and dipropylene glycol are preferable. From the viewpoints of detergency (wiping of stool color on the skin) and low irritation.

  The concentration of the polyhydric alcohol or glycol ether in the aqueous detergent used in the present invention is 1 to 30% by weight, particularly 2 to 20% by weight, especially 5 to 15% by weight. This is preferable in terms of the wiping ability of the attached stool color), the feeling of use, and the stability of the system.

  In the aqueous cleaning agent used in the present invention, components other than the above-described components, if necessary, components used in ordinary cleaning compositions, such as humectants, bactericides, preservatives, chelating agents, electrolyte substances, medicinal agents , Pigments, fragrances, antioxidants, pH adjusters, and the like can be appropriately contained within a range not impairing the effects of the present invention.

  In addition, the aqueous detergent used in the present invention includes, as a skin care agent, a ginger extract, eucalyptus extract, tuberose extract, clove extract, yuzu extract, evening primrose extract, cherry extract, okra extract, hamamelis extract, aloe extract, yogurt Extract, Soybean Extract, Peony Extract, Chamomile Extract, Chlorella Extract, Raspberry Extract, Grapefruit Extract, Avocado Extract, Bilberry Leaf Extract, Hypericum Extract, Momo Leaf Extract, Trehalose, Tannic Acid, Sodium Hyaluronate, Polyglutamic Acid, Synthetic Ceramide Etc. can be contained.

  The cleaning sheet 1A of the first embodiment is formed by impregnating a predetermined amount of a water-based cleaning agent having the above-described composition into a nonwoven fabric as a fiber sheet. Hereinafter, the nonwoven fabric which comprises this fiber sheet is demonstrated.

  The nonwoven fabric (fiber sheet) preferably contains 1) cellulosic fibers, 2) polyester fibers or polyacetal fibers, and 3) heat-fusible fibers as the fibers constituting the nonwoven fabric. In consideration of hydrophilicity, nonwoven fabric strength, texture, etc., other fibers may be included in the nonwoven fabric. Moreover, as said nonwoven fabric, a spunlace nonwoven fabric can be used conveniently. The spunlace nonwoven fabric is obtained, for example, by mixing the fibers 1) to 3) to form a web, and entangle the fibers with each other by the hydroentanglement method.

  The nonwoven fabric (fiber sheet) contains 20 to 70% by weight, particularly 30 to 60% by weight, based on the total weight of the nonwoven fabric, of cellulosic fibers as fibers constituting the nonwoven fabric, from the viewpoint that the aqueous detergent can be satisfactorily retained. It is preferable that

  Examples of the cellulosic fibers include natural cellulosic fibers such as cotton, pulp and hemp; and regenerated cellulosic fibers such as rayon, lyocell, tencel, and cupra. These are used alone or in combination of two or more. Can be mixed and used. In the case of using a spunlace nonwoven fabric as the nonwoven fabric, it is preferable to use lyocell fiber or tencel fiber as the cellulosic fiber from the viewpoint of imparting unevenness formation by hydroentanglement in the spunlace method and bulkiness of the sheet.

  From the viewpoint of imparting practically sufficient strength to the nonwoven fabric, the nonwoven fabric (fiber sheet) contains 15 to 60% by weight of polyester-based fibers or polyacetal fibers as fibers constituting the nonwoven fabric, particularly 15% to 60% by weight. It is preferable to contain 20 to 50% by weight.

  Examples of the polyester fiber include polyethylene terephthalate (PET) fiber, polytrimethylene terephthalate fiber, and polybutylene terephthalate fiber. Since polyester fiber and polyacetal fiber have elasticity and recovery (restoration) property, when using a spunlace nonwoven fabric as the nonwoven fabric, there is a force to return to bending due to water flow in the process of bending and entanglement of the fiber with water flow. It works strongly and can result in a bulky structure with large voids. The polyester fiber or polyacetal fiber is preferably hydrophilic from the viewpoint of forming irregularities by water entanglement in the spunlace method and retaining the aqueous detergent. As a method of imparting hydrophilicity to the fiber, a hydrophilic oil agent is attached to the fiber surface by spraying or dipping method, roll coating method, or a hydrophilic component is added to the resin before fiber spinning and kneaded. It can be given by spinning. As the hydrophilic oil agent, anionic, cationic, amphoteric and nonionic surfactants having various molecular weights can be used singly or in combination, but it is usually used when a nonwoven fabric is formed by the spunlace method. Since the hydrophilized oil agent flows down, the retention and dispersibility of the impregnating liquid are lowered when used in a wet sheet. Examples of preferable techniques for hydrophilization include methods in which durability is imparted to an aqueous solution, such as JP2007-31906, JP2005-344260, JP2005-154975, and JP2001-303450. Can be mentioned.

  The nonwoven fabric (fiber sheet) preferably has a higher content of cellulosic fibers than a content of polyester fibers or polyacetal fibers from the viewpoint that the aqueous detergent can be favorably retained.

  In the case of using a spunlace nonwoven fabric as the nonwoven fabric, the nonwoven fabric (fiber sheet) is heat-fusible as a fiber constituting the nonwoven fabric from the viewpoint of forming irregularities by hydroentanglement in the spunlace method and dispersibility of the aqueous detergent. It is preferable that the fibers contain 10 to 30% by weight, particularly 5 to 20% by weight, based on the total weight of the nonwoven fabric.

  Examples of the heat-fusible fibers include single fibers such as polypropylene, polyethylene, and polyester, composite fibers thereof, acrylic, nylon, and vinylon. Examples of the semi-synthetic fibers include acetate and protein fibers. Polypropylene / polyethylene core-sheath type composite fibers are preferred in terms of maintaining the voids and impregnating the thickness when impregnated with the detergent.

The basis weight of the nonwoven fabric (fiber sheet) is in the range of 20 to 100 g / m ² , particularly 20 to 80 g / m ² , and further 30 to 60 g / m ² , and has good wiping properties and touch. Moreover, it is preferable from the viewpoint of cost. The basis weight of a nonwoven fabric can be calculated | required by measuring the weight per fixed area (1m < ² >) by a conventional method.

  The wet thickness of the nonwoven fabric is 0.45 to 1.0 mm, particularly 0.5 to 1.0 mm, and more preferably in the range of 0.55 to 1.0 mm. It is preferable from the point. The wet thickness is measured by a dial gauge or laser displacement meter under a pressure of 36 Pa under a wet condition of impregnating 1 part by weight of a dried fiber sheet with 2 parts by weight of water.

The wet porosity of the nonwoven fabric is 0.02 to 0.2 g / cm ³ , particularly 0.02 to 0.15 g / cm ³ , and further 0.02 to 0.1 g / cm ^3. However, it is preferable from the point that the wiping property of the stool and the touch are good. The wet porosity (density) is calculated by the following equation from the basis weight of the nonwoven fabric and the wet thickness measurement.

  The fineness of the constituent fibers of the non-woven fabric is 4 dtex or less, particularly 2.5 dtex to 0.7 dtex, from the viewpoints of the touch, the wiping property of soft stool and the retention property of the wiped stool. The fineness is measured by dyeing and identifying the constituent fibers of the nonwoven fabric with the Bokenstein reagent, confirming the type of the constituent fibers, and then observing the cross-sectional shape of the fibers by magnifying 150 to 500 times with a stereomicroscope or an electron microscope. By doing. If the cross section is approximately circular, the width of the fiber is measured several times. The fineness is calculated from the density and the cross-sectional area of the fiber for each fiber type, and the average fineness is obtained. In the case of an irregular cross-section fiber, the cross-sectional shape is approximated to a geometric shape as described above, the cross-sectional area is obtained, and the average fineness is calculated.

  The average fiber length of the constituent fibers of the nonwoven fabric is preferably 20 to 80 mm, more preferably 30 to 70 mm, from the viewpoints of unevenness formation and touch. This average fiber length is observed by enlarging 20 times to 50 times with a stereomicroscope or an electron microscope, and the length of one fiber is measured. The length of two or more fibers is measured by such a method, and an average of them is obtained.

The nonwoven fabric (fiber sheet) in the cleaning sheet 1 </ b> A of the first embodiment has irregularities composed of innumerable convex portions 2 and innumerable concave portions 3 on its surface as shown in FIGS. 1 and 2. Excellent wiping and retention of stool. The height h of the convex portion (see FIG. 2) is preferably 0.1 to 1.2 mm, and more preferably 0.2 to 0.8 mm. Area in plan view of one convex portion 2 is preferably 0.1 to 10 mm ^2, more preferably 0.3 to 5 mm ^2. It is preferable that the space | interval p (refer FIG. 2) of the convex part 2 and the convex part 2 adjacent to it is 1-10 mm, and the space | interval of the recessed part 3 and the recessed part 3 is also the same. The convex portions are circular in a plan view and are arranged in a staggered manner. In addition, the shape and arrangement | positioning of the convex part 2 are not restrict | limited to this, A quadrangle | tetragon, a triangle, a flower shape may be sufficient, and you may arrange | position with a streak shape. The height of the convex part and the area of the convex part in plan view are magnified with a stereomicroscope, measured ten times, and obtained from the average.

  There is no restriction | limiting in particular in the formation method of the unevenness | corrugation of the said nonwoven fabric (fiber sheet), It can form by pinching with the roll which has an unevenness | corrugation at the post process of nonwoven fabric manufacture. In particular, it is preferable to form in the hydroentanglement process of the spunlace method from the viewpoint of maintaining the wet porosity and improving the uptake and retention of dirt and the touch. Forming irregularities in the water entanglement process of the spunlace method is performed, for example, by changing the mesh size or pattern of the net.

  The fiber voids (average fiber distance) at the convex portions of the nonwoven fabric are preferably 5 to 80 μm, particularly preferably 25 to 70 μm, from the viewpoint of improving stool wiping and retention. This average fiber distance is determined by the method described in JP-A-2006-045096.

  1 A of cleaning sheets of 1st Embodiment are what the said aqueous cleaning agent impregnates 1-10 weight part with respect to 1 weight part of said nonwoven fabric (fiber sheet), Preferably 1.5-5 weight part is impregnated. . The method for impregnating the non-woven fabric with the aqueous detergent is not particularly limited, and for example, coating using a gravure coater or die coater, coating coating from a nozzle, spray coating, or the like can be used.

  The cleaning sheet 1A of the first embodiment cleans the menstrual blood in the excretory part, for example, when the sanitary napkin is replaced, in addition to the purpose of wiping dirt such as urine and urine attached to the butt and excretory part of the baby or care recipient. It can also be suitably used for the purpose. And the cleaning sheet 1A of the first embodiment mainly contains a β-glucuronidase inhibitor, so that when the dirt around the anus and genital area is wiped off, the β-glucuronidase inhibitor is present in the wiped portion. As a result, an increase in phenolic compounds and indoles that are causative substances of urine odor is suppressed, and generation of unpleasant urine odor is continuously suppressed. In addition, for example, when the used cleaning sheet 1A is rolled up with the used diaper and discarded, an unpleasant urine odor may be generated in the disposable diaper due to the action of the β-glucuronidase inhibitor. It is suppressed.

In addition, as described above, when a nonionic surfactant is contained in an aqueous detergent, particularly when a nonionic surfactant having a polyalkylene oxide skeleton in the main chain is contained, the color of stool That is, it becomes easier to wipe stool by acting on bilirubin. Therefore, the wiping property of the color of the stool attached to the skin due to soft stool or the like is improved. Therefore, it becomes possible to finish the cleaning without rubbing the anus, the genital area and the like with the cleaning sheet 1A many times, and it is difficult to cause damage to the skin. It should be noted, wiping of the flights of color (bilirubin), it mainly can be a measure of the color of flights with flights of color or cleaning sheet was attached to the skin, to evaluate, for example, in the following manner Can do.

<Evaluation method of wiping property of stool color (bilirubin)>
Evaluation of the wiping property of stool color (bilirubin) is performed by attaching bilirubin to the inner side of the adult forearm. First, the color difference of the measurement site inside the forearm is measured. B ^* at that time is defined as b _b ^* . The color difference is measured using a handheld simple spectral color difference meter NF333 manufactured by Nippon Denshoku Industries Co., Ltd. Next, about 2 mg of bilirubin is rubbed and attached within a range of about 20 mm in diameter to the measurement site (inner forearm portion of the adult) using an ear-pick-like scissors. Bilirubin is obtained as a reagent from Wako Pure Chemical Industries. The adhesion amount of bilirubin is adjusted so that Δb ₀ is 15 to 20 when the color difference measurement values b ₀ ^* and Δb ₀ = b ₀ ^* −b _b ^* after adhesion are set. Next, a cleaning sheet to be evaluated is prepared, the cut length is 200 mm × 150 mm, and this is folded into eight folds (50 mm × 75 mm). Next, an eight-fold sheet is placed beside the bilirubin adhesion site of the forearm, and a weight of 30 mm × 60 mm is placed thereon. The weight is set so that the load on the sheet is 0.5 kPa. Then, the sheet on which the weight is placed is pulled by hand with respect to the forearm portion in the horizontal direction to wipe off the bilirubin adhesion site. The tension is performed in the longitudinal direction (sample 75 mm length direction). After wiping, a color difference meter is used to measure the color difference of the bilirubin adhering site, and the value at that time is defined as b ₁ ^* . If Δb ₁ = b ₁ ^* −b _b ^* and this Δb ₁ is 5 or less, it is determined that the wiping property is good.

  Further, the cleaning sheet 1A of the first embodiment has irregularities formed on the surface thereof, the stool wiping property and holding property are good, and the touch is also good. In particular, the convex portion 2 has a large fiber void and is bulky, so that the retention of soft stool is good. Since the wiping property of the stool is good, it is not necessary to rub the butt over and over and is gentle to the skin.

  In addition, as described above, when silicone oil is included in the water-based cleaning agent, and further when silica is included, it is difficult for bubbles to form on the nonwoven fabric having irregularities on the surface, and the delicate skin of the baby is removed with a detergent. There is no risk of having the image of washing away.

  Hereinafter, other embodiments of the anus or genital area cleaning sheet of the present invention will be described. Regarding other embodiments to be described later, components that are different from the cleaning sheet of the first embodiment described above will be mainly described, and similar components will be denoted by the same reference numerals and description thereof will be omitted. The description of the cleaning sheet of the first embodiment is applied as appropriate to the components that are not particularly described.

  3 and 4 show a second embodiment of the cleaning sheet of the present invention. The nonwoven fabric (fiber sheet) constituting the anus or genital area cleaning sheet 1B of the second embodiment, as shown in FIG. 3 and FIG. And excellent retention. Each aperture 4 is formed in the same shape in the longitudinal direction or the lateral direction of the nonwoven fabric. The basis weight of the nonwoven fabric constituting the cleaning sheet 1B of the second embodiment, the wet thickness, and the wet porosity can be the same as in the first embodiment.

The average open area of the opening portion 4 (the area of the plan view) is preferably 0.1 to 10 mm ^2, more preferably 0.3 to 5 mm ^2. The average opening area of the opening 4 is magnified with a stereomicroscope and measured 10 times, and is obtained from the average. Moreover, it is preferable that the space | interval p (refer FIG. 4) of the opening part 4 and the opening part 4 adjacent to it is 1.5-3 mm. The apertures 4 are circular or elliptical in plan view and are arranged in a staggered manner. In addition, the shape and arrangement | positioning of the countless opening part 4 are not restrict | limited to this, A square, a triangle, and a flower shape may be sufficient. Innumerable apertures 4 may have a combination of different aperture diameters and shapes in the above range.

  The method for forming the innumerable apertures 4 of the cleaning sheet 1B of the second embodiment is not particularly limited, and it is formed by pinching / opening with a roll having irregularities in the subsequent process of manufacturing the nonwoven fabric. Can do. It is preferable to form in the hydroentanglement process of a spunlace method from the point of the clarity of a hole part, shape retentivity, and the touch. Thereby, it is possible to improve the uptake and retention of dirt. In order to form in the hydroentanglement process of the spunlace method, the aperture can be adjusted by changing the mesh size or pattern of the net.

  The effect similar to 1 A of cleaning sheets of 1st Embodiment is acquired also by the cleaning sheet 1B of 2nd Embodiment. In particular, since the cleaning sheet 1B of the second embodiment has the opening 4, the stool wiping property and retaining property are good, and the touch is also good.

  Next, a third embodiment of the anus or genital area cleaning sheet of the present invention will be described. In the cleaning sheet of the third embodiment, the fiber sheet is a water-decomposable sheet mainly composed of cellulosic fibers, and the water-decomposable sheet contains a water-soluble binder. As the aqueous cleaning agent in the cleaning sheet of the third embodiment, the same ones as described above can be used. Hereinafter, the water-decomposable sheet constituting the cleaning sheet of the third embodiment will be described.

  The water-decomposable sheet (fiber sheet) is mainly composed of cellulosic fibers. The content of cellulosic fibers in the water-decomposable sheet is preferably 80 to 100% by weight, more preferably 90 to 100% by weight, based on the total weight of the water-decomposable sheet.

  Examples of the cellulosic fibers include bleached wood pulp such as bleached softwood bleached kraft pulp (NBKP), softwood bleached sulfite pulp (NBSP), hardwood bleached kraft pulp (LBKP), and natural cellulose fibers such as cotton and hemp. And regenerated cellulosic fibers such as rayon, lyocell, and cupra. Among these cellulosic fibers, NBKP and NBSP are particularly preferable in terms of flexibility and strength.

  As constituent fibers of the water-decomposable sheet, fibers other than the cellulose fibers, for example, polyvinyl alcohol fibers, other polyolefin fibers, polyester fibers, fibers using biodegradable polylactic acid, etc. are used. May be. The content of these other fibers is preferably 0 to 20% by weight, more preferably 0 to 10% by weight, based on the total weight of the water-decomposable sheet.

  The water-decomposable sheet has water-decomposability, and when it is discarded into a large amount of water, for example, it is quickly disintegrated at the fiber level and can flow without clogging the flush toilet. However, when stool or the like is wiped off, sufficient wet strength that can withstand the operation in a state of being impregnated with an aqueous detergent is required. From such a viewpoint, the water-decomposable sheet contains a water-soluble binder in addition to the cellulosic fibers. By using a water-soluble binder, it becomes easy to control water disintegration, and a disintegrable sheet that does not disintegrate in a small amount of water but disintegrates rapidly at the fiber level when discarded in a large amount of water is obtained.

  Examples of the water-soluble binder include an anionic binder such as a water-soluble binder having a carboxyl group, polyvinyl alcohol, starch or a derivative thereof, sodium alginate, tant gum, guar gum, xanthan gum, gum arabic, carrageenan, galactomannan, gelatin, and casein. , Albumin, pull plan, polyethylene oxide, viscose, polyvinyl ethyl ether, sodium polyacrylate, sodium polymethacrylate, polyacrylamide, hydroxylated derivatives of polyacrylic acid, polyvinyl pyrrolidone / vinyl pyrrolidone vinyl acetate copolymer, etc. It is done. Among these binders, it is preferable to use an anionic binder such as a water-soluble binder having a carboxyl group or polyvinyl alcohol from the viewpoint of good water decomposability and an affinity with a crosslinking agent described later.

  The water-soluble binder (anionic binder) having a carboxyl group is an anionic water-soluble binder that easily forms a carboxylate in water. Examples thereof include polysaccharide derivatives, synthetic polymers, and natural products. Examples of the polysaccharide derivative include carboxymethyl cellulose or a salt thereof, carboxyethyl cellulose or a salt thereof, carboxymethylated starch or a salt thereof, and an alkali metal salt of carboxymethyl cellulose is particularly preferable. Examples of the synthetic polymer include a salt of an unsaturated carboxylic acid polymer or copolymer, a salt of a copolymer of an unsaturated carboxylic acid and a monomer copolymerizable with the unsaturated carboxylic acid, and the like. Examples of the unsaturated carboxylic acid include acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic anhydride, maleic acid, and fumaric acid. Examples of monomers that can be copolymerized with these include esters of these unsaturated carboxylic acids, vinyl acetate, ethylene, acrylamide, and vinyl ether. Particularly preferred synthetic polymers are those using acrylic acid or methacrylic acid as the unsaturated carboxylic acid. Specifically, polyacrylic acid, polymethacrylic acid, acrylic acid-methacrylic acid copolymer salt, acrylic acid or methacrylic acid. Examples thereof include a salt of a copolymer of an acid and an alkyl acrylate or an alkyl methacrylate. Examples of natural products include sodium alginate, xanthan gum, gellan gum, tarragant gum, pectin and the like.

  Among the water-soluble binders having a carboxyl group, an alkali metal salt of carboxymethyl cellulose (CMC) is particularly preferable. CMC has a degree of etherification of 0.8 to 1.2, particularly 0.85 to 1.1, and has good performance as a binder, and has good affinity with a crosslinking agent described later. It is preferable from the point. For the same reason, CMC has a viscosity of 1 to 40% mPa · s, particularly 15 to 35 mPa · s at 25 ° C., and a viscosity of 5 to 4000 mPa · s, particularly 5700%, at the same temperature. It is preferable that the viscosity of a 5% by weight aqueous solution at 60 ° C. is 1200 mPa · s or less.

  The content of the water-soluble binder is preferably 1 to 20% by weight, more preferably 5 to 10% by weight, based on the total weight of the constituent fibers of the water-decomposable sheet (fiber sheet).

  There is no particular limitation on the method of including the water-soluble binder in the water-decomposable sheet, and an internal addition method or an external addition method may be used. Examples of the internal addition method include a method of adding a water-soluble binder to the stock (fiber dispersion) in advance when a water-decomposable sheet is produced by a wet papermaking method. Examples of the external addition method include a method of forming a web (paper) containing cellulosic fibers and then adding a water-soluble binder to the web by a predetermined addition means. In this external addition method, it is preferable from the viewpoint of improving water decomposability that the water-soluble binder is added so that the water-soluble binder adheres to the web in the form of dots. In order to attach the water-soluble binder in the form of dots, for example, spray coating can be used.

  In the present invention, when a water-decomposable sheet containing the water-soluble binder is used as the fiber sheet, if a water-based cleaning agent impregnated in the water-decomposable sheet contains a crosslinking agent, it is effective for improving the wet strength of the water-degradable sheet. is there.

  As the cross-linking agent, an appropriate one is used according to the type of the water-soluble binder. For example, when an anionic binder, particularly a water-soluble binder having a carboxyl group such as CMC, is used as the water-soluble binder, it is preferable to use a polyvalent metal ion as the crosslinking agent. In particular, the use of one or more metal ions selected from the group consisting of alkaline earth metals, manganese, zinc, cobalt, and nickel has sufficient strength to withstand wiping operations because the fibers are sufficiently bonded together. It is preferable from the standpoint of expression and sufficient water disintegration. Among these metal ions, it is particularly preferable to use ions of calcium, strontium, barium, zinc, cobalt, and nickel because higher wet strength can be obtained and the wiping operation can be performed successfully.

  The metal ions can be used by adding to a water-based detergent in the form of a water-soluble metal salt such as hydroxide, chloride, sulfate, nitrate, carbonate, formate, and acetate. It is sufficient that the metal ions are added so as to be in an amount of 1/4 mol or more, particularly 1/2 mol or more with respect to 1 mol of carboxyl groups in the water-soluble binder present in the cleaning sheet of the present invention. This is preferable from the viewpoint of causing a crosslinking reaction.

  Moreover, when using polyvinyl alcohol as a water-soluble binder, it is preferable to use boric acid as a crosslinking agent. As a result, a crosslinking reaction occurs between the polyvinyl alcohol and boric acid, so that the polyvinyl alcohol is insolubilized. Boric acid is preferably blended in the aqueous detergent at a concentration of 1 to 5% by weight. In particular, when polyvinyl alcohol with a high degree of polymerization is used, it is preferably blended at a concentration of 1 to 3% by weight, and when polyvinyl alcohol with a medium or low degree of polymerization is used, it is preferably blended at a concentration of 3 to 5% by weight.

The basis weight of the water-decomposable sheet (fiber sheet) is preferably 20 to 100 g / m ² , and particularly preferably 30 to 80 g / m ² , from the viewpoint of good wiping property and touch and cost. From the same viewpoint, the wet thickness of the water-decomposable sheet is preferably 0.1 to 1.0 mm, more preferably 0.2 to 0.8 mm. Here, the thickness of the wet fiber sheet is a wet state by impregnating 2 parts by weight of water with respect to 1 part by weight of the dry fiber sheet, and the thickness of the wet fiber sheet under a pressure of 36 Pa, It is measured with a dial gauge type or laser type displacement meter.

  The water-decomposable sheet (fiber sheet) can be produced by a wet papermaking method. Examples of the wet paper machine used in the wet paper machine include a short paper machine, a long paper machine, a twin wire paper machine, an on-top paper machine, a hybrid paper machine, and a round paper machine.

  The water-decomposable sheet may have a single layer structure (that is, one sheet) or a multilayer structure in which two or more paper layers are laminated. Further, for example, unevenness may be formed on one or both sides of the water-decomposable sheet as in the nonwoven fabric (fiber sheet) of the first embodiment, and water-decomposable as in the nonwoven fabric (fiber sheet) of the second embodiment. A large number of apertures that penetrate the water-decomposable sheet in the thickness direction may be formed in the sheet.

  The effect similar to 1 A of cleaning sheets of 1st Embodiment is acquired also by the cleaning sheet of 3rd Embodiment. In particular, the cleaning sheet of the third embodiment has a water-disintegrating property, so that it can be flushed away after rubbing around the anus or genital area, and then flushed to the flush toilet. Excellent in properties.

  The anus or genital area cleaning sheet of the present invention is not limited to the above embodiment, and can be changed as appropriate. For example, in the cleaning sheets 1A and 1B of the first and second embodiments, when forming a spunlace nonwoven fabric as a fiber sheet, cellulosic fibers, polyester fibers or polyacetal fibers, and heat-fusible fibers However, after forming a web composed of the respective fibers and laminating them to form a three-layer web, the web fibers and inter-layer fibers can be entangled by a hydroentanglement method to form a nonwoven fabric. good. Alternatively, a web in which two types of fibers are mixed may be formed, laminated on another type of fiber web, and formed into a nonwoven fabric by a hydroentanglement method. For example, when a cellulose-based fiber is used as a central layer, a web formed by mixing polyester-based fibers or polyacetal fibers, and heat-fusible fibers is laminated as upper and lower layers and formed into a nonwoven fabric by hydroentanglement method, the surface of the nonwoven fabric Thus, a sheet having a structure in which the wet feeling is small and the impregnating liquid oozes out from the nonwoven fabric by pressurization can be obtained.

  Moreover, the fiber sheet in the cleaning sheets 1A and 1B of the first and second embodiments was a single-layer spunlace nonwoven fabric, but on other nonwoven fabrics already formed, cellulosic fibers and polyester fibers. Alternatively, a spunlace nonwoven fabric may be obtained by laminating a web containing polyacetal fibers and heat-fusible fibers and integrating the nonwoven fabric and the web by a hydroentanglement method.

  EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further more concretely, this invention is not limited to these. In the following examples, “%” means “% by weight” unless otherwise specified.

[Example 1]
60% of lyocell fiber (fineness 1.7 dt, fiber length 38 mm), hydrophilized PET fiber (fineness 1.6 dt, fiber length 51 mm) and polypropylene / polyethylene core-sheath composite fiber (fineness 1.7 dt, fiber length 51 mm) , 30%, and 10% by weight to produce a card web. Next, the web fibers were entangled by the hydroentanglement method to form a nonwoven fabric, and then a concavo-convex embossing treatment was performed to give a concavo-convex shape, thereby obtaining a concavo-convex spunlace nonwoven fabric having a basis weight of 50 g / m ² . The shape of the projections in plan view is circular, the size is 2.5 mm in diameter, the height h of the projections is 0.6 mm, and the interval p between the projections is 9 mm in the MD direction and 7 mm in the CD direction. (Pattern 1).

  Next, as shown in Table 1, 0.1% of gobycitannin as a β-glucuronidase inhibitor and polyoxyethylene (n = 9) lauryl ether (non-ionic surfactant having a polyalkylene oxide skeleton in the main chain ( Aqueous cleaning agent containing 0.5% of HLB = 14) and 0.02% of silicone-based antifoaming agent (trade name “KM-72”, manufactured by Shin-Etsu Chemical Co., Ltd., 30% silicone, 3% silica) as silicone oil The aqueous cleaning agent was spray-coated at a ratio of 2.2 parts by weight to 1 part by weight of the spunlace nonwoven fabric to obtain a sheet for cleaning the anus or genital area, and this was used as a sample of Example 1. .

[Examples 2 to 4]
An anus or genital area cleaning sheet in the same manner as in Example 1 except that glucarolactone (Example 2), globanone (Example 3), and sanisole C (Example 4) were used in place of goby tannin in Example 1. To obtain samples of Examples 2 to 4, respectively.

Example 5
Tencel fiber (fineness 1.7 dt, fiber length 38 mm), PET fiber (fineness 1.6 dt, fiber length 51 mm) and polypropylene / polyethylene core-sheath composite fiber (fineness 1.7 dt, fiber length 51 mm), 60%, 30 % And 10% by weight to produce a card web. Otherwise, in the same manner as in Example 1, a spunlace nonwoven fabric was obtained, and the aqueous cleaning agent described in Table 1 was applied to obtain an anus or genital area cleaning sheet. This was used as a sample of Example 5. .

Example 6
A water-disintegratable fiber sheet was produced by the following procedure. NBSP and NBKP were dispersed in water at a blending ratio (NBSP / NBKP) of 80/20% to obtain a slurry having a concentration of 2%. This slurry was used as a raw material for wet paper making with a short paper machine, and sprayed with 5% aqueous solution of carboxymethylcellulose sodium salt (Nippon Paper's Sunrose) on one side of the obtained paper, and then dried with a dryer. Single layer paper was obtained. The basis weight of the obtained single-layer paper was 30 g / m ² , and the external addition amount of carboxymethyl cellulose sodium salt was 7% with respect to the total amount of pulp. The obtained two single-layer papers were superposed so that their application surfaces of the aqueous solution of carboxymethylcellulose sodium salt face each other, and embossed at room temperature in that state, and water degradability having a basis weight of 60 g / m ² . A fiber sheet (water-decomposable sheet) was obtained. The embossed pattern is a pattern in which dots with a diameter of 1 mm are arranged in a staggered pattern in 3 rows with a vertical pitch of 3 mm and a horizontal pitch of 1 mm in the horizontal direction at intervals of 50 mm.

  Next, as shown in Table 1, 0.1% of gobycitannin as a β-glucuronidase inhibitor and polyoxyethylene (n = 9) lauryl ether (non-ionic surfactant having a polyalkylene oxide skeleton in the main chain ( An aqueous detergent containing HLB = 14, molecular weight 582) 0.5%, dipropylene glycol 18%, calcium chloride 3% and water 78.4% was prepared, and 1 part by weight of the water-degradable sheet was prepared. On the other hand, the aqueous cleaning agent was spray applied at a ratio of 2 parts by weight to obtain an anus or genital area cleaning sheet, which was used as a sample of Example 6.

[Examples 7 to 9]
An anus or genital area cleaning sheet was obtained in the same manner as in Example 6 except that the composition of the aqueous cleaning agent was changed, and samples for Examples 7 to 9 were obtained.

[Comparative Examples 1 and 2]
An anus or genital area cleaning sheet was obtained in the same manner as in Example 1 except that the composition of the aqueous detergent was changed, and used as samples of Comparative Examples 1 and 2, respectively.

[Comparative Examples 3 and 4]
An anus or genital area cleaning sheet was obtained in the same manner as in Example 6 except that the composition of the water-based cleaning agent was changed, and used as samples of Comparative Examples 3 and 4, respectively.

  Although not described in the following Tables 1 and 2, the water-based cleaning agent used in Examples and Comparative Examples contains parabens (preservatives). That is, the aqueous detergents according to Examples 1 to 5 and Comparative Examples 1 and 2 (in which the fiber sheet is a nonwoven fabric) were 0.2% by weight of methyl paraben, 0.07% by weight of ethyl paraben, and 0.02 of propyl paraben, respectively. % By weight and 0.2% by weight sodium benzoate. In addition, the aqueous detergents according to Examples 6 to 9 and Comparative Examples 3 and 4 (examples in which the fiber sheet is a water-degradable sheet) include 0.2% by weight of methylparaben and 0.2% by weight of sodium benzoate, respectively. Yes.

[Evaluation]
About the produced anus or genital area cleaning sheet, (1) deodorizing property, (2) wiping property of stool color (bilirubin), (3) wiping property of stool, (4) foaming property, 5) The feeling of use and (6) water disintegration were evaluated. Moreover, (7) foaming property and (8) stability were evaluated about the water-system cleaning agent used with the sheet | seat for cleaning, respectively. These results are shown in Tables 1 and 2 below. These evaluations were performed in an environment of 23 ± 2 ° C. and a relative humidity of 50 ± 10%.

(1) Evaluation of deodorizing properties 500 ml of human urine prepared by mixing 100 ml of urine of five adult males is prepared. 1.0 g of human urine is dropped on an acrylic plate, and a cleaning sheet is stacked to cover the dropped human urine, and a 1.2-liter sealed container (trade name “Tight Box No. 3”, Butterfly Plastic Industry Co., Ltd.) The acrylic plate was quickly put into an airtight product (made by a company) and airtight, and the lid of the container was opened after 1 hour and 24 hours at room temperature of 30 ° C., and the odor in the container was subjected to sensory evaluation. The evaluation criteria are as follows. That is, the odor intensity was determined based on a 6-step odor intensity display method with an evaluation score of 0-5. The evaluation score is “0” odorless, “1” finally detectable odor (detection threshold), “2” urine odor, but weak odor (cognitive threshold), “3” odor that can be easily felt as urine odor “4” indicates a strong urine odor and “5” indicates a strong urine odor. The determination of the odor intensity was performed in 0.5 increments, and the average value of the evaluation of five people is shown in Table 1. The smaller the average value, the higher the deodorant property.

(2) Evaluation of wiping property of fecal color (bilirubin) The evaluation method was performed by the method described above, and Δb ₁ after wiping once was calculated and evaluated according to the following criteria.
◎: Less than 3.5 ○: 3.5 or more and less than 5 Δ: 5 or more and less than 7 ×: 7 or more

(3) Evaluation of stool wiping property The stool wiping property was evaluated using a water-based paint as a substitute for stool. Apply 0.5 g of water-based paint (Guitar Paint, viscosity 4 Pa · s, blue) uniformly in a circular shape with a diameter of 25 mm centering on a position 20 mm from the upper end in the longitudinal direction on an acrylic plate (7 cm × 10 cm). . After leaving for 1 minute, the cleaning sheet folded in half is placed with its one end aligned with the upper end in the longitudinal direction of the acrylic plate, and a weight with a diameter of 25 mm is placed on the position where the paint is applied. The weight is such that the load on the sheet is 1.8 kPa. The cleaning sheet only needs to be sufficiently larger than the area where the paint is applied. Then, the sheet on which the weight is placed is pulled 6 cm at a constant speed in the longitudinal direction (from the upper end to the lower end). At that time, the amount of paint attached to the sheet was measured and evaluated according to the following criteria.
A: 0.30 g or more O: 0.26 g or more and less than 0.30 g Δ: 0.23 g or more and less than 0.26 g ×: Less than 0.23 g

(4) Evaluation of foamability of cleaning sheet Fold the cleaning sheet into a Terumo syringe (20 ml, side opening) and squeeze about 1 g of the liquid (aqueous cleaning agent) impregnated in the sheet into a petri dish. The state of the squeezed liquid was visually observed and evaluated according to the following criteria.
A: No bubbles are formed.
○: Bubbles slightly stand up but disappear immediately.
Δ: Foamed and disappeared after a while.
X: Bubbles are formed and the bubbles do not disappear immediately.

(5) Evaluation of feeling of use Wipe the inside of the forearm of professional panelists such as mothers with childcare with a cleaning sheet and use feelings such as a feeling of slimness and refreshing after leaving for 30 seconds according to the following criteria: Sensory evaluation was performed.
A: Very good (like).
○: Good (like).
Δ: Normal.
X: Bad (dislike).

(6) Evaluation of water disintegration Water disintegration is evaluated by the test method for ease of loosening specified in JIS P4501. A 300 ml beaker containing 300 ml of water (water temperature 20 ± 5 ° C.) is placed on a magnetic stirrer, and the rotor (35 mm diameter, 12 mm thick disk) rotation speed is adjusted to 600 ± 10 rev / min. To do. A test piece (cleaning sheet) of 60 mm (MD) × 60 mm (CD) is put in it, and a stopwatch is pushed. The rotation speed of the rotor once decreases to about 500 rotations due to the resistance of the test piece, and the rotation speed increases as the test piece is loosened. When the rotation speed is recovered to 540 rotations, the stopwatch is stopped and the time is measured in units of 1 second. Measure with The above measurement is performed three times, and the average value is taken as the water disintegration value. If this value is 60 seconds or less, the water-decomposable sheet is practically satisfactory.

(7) Evaluation of foaming property of water-based cleaning agent 10 ml of water-based cleaning agent is put in a test tube having a volume of 30 ml, the mouth of the test tube is closed, and the height h1 of 10 ml of water-based cleaning agent in the test tube is read. Shake up and down 30 times (10 seconds). The height h2 of the aqueous cleaning agent in the test tube after shaking 30 times is read, and h1 is subtracted from the height h2, and the difference is taken as the height of the bubble. It was judged that the lower the foam height, the higher the foaming property of the aqueous detergent, and the evaluation was made according to the following criteria. If the fiber sheet is already impregnated with the water-based cleaning agent, 10 ml of the water-based cleaning agent is extracted by squeezing the water-based cleaning agent from the fiber sheet.
◎: Less than 15 mm ○: 15 mm or more and less than 30 mm △: 30 mm or more and less than 50 mm ×: 50 mm or more

(8) Evaluation of stability of aqueous cleaning agent The state of the liquid after storing the aqueous cleaning agent for 1 month under the following three conditions (A) to (C) is visually observed for each condition. Evaluated according to. (A) In an electric dryer intended for 50 ° C humidity, (B) In a constant temperature room at 23 ° C and 65% RH, (C) In a constant temperature room at -5 ° C humidity.
○: The water-based cleaning agent is transparent under all three conditions.
X: The aqueous cleaning agent becomes cloudy and separates in one or more of the three conditions.

As is clear from the results shown in Table 1 and Table 2, the cleaning sheets of the examples are superior in deodorizing properties as compared with the cleaning sheets of the comparative examples not containing the β-glucuronidase inhibitor. .
Moreover, the comparison of the comparative example 1 and the comparative example 2, or the comparison with the comparative example 3 and the comparative example 4 WHEREIN: Use of a nonionic surfactant improves the stool color (bilirubin) and the wiping property of a stool. It turns out that it is effective. In addition, comparison between Comparative Example 1 and Comparative Example 2 shows that the use of silicone oil and silica is effective in obtaining high evaluation of foaming properties.

1A, 1B Anus or genital area cleaning sheet 2 Convex part 3 Concave part 4 Opening part

Claims (6)

An aqueous or cleaning agent is an anus or genital area cleaning sheet impregnated with 1 to 10 parts by weight per 1 part by weight of a fiber sheet,
The aqueous detergent contains 0.01 to 2.0% by weight of β-glucuronidase inhibitor and 80 to 99.9% by weight of water,
The aqueous detergent further contains 0.1 to 1% by weight of a nonionic surfactant, and the nonionic surfactant is a nonionic surfactant having a polyalkylene oxide skeleton in the main chain. An anus or genital area cleaning sheet containing 90% by weight or more in an ionic surfactant.   The sheet for cleaning anus or genital area according to claim 1, wherein the β-glucuronidase inhibitor is at least one selected from the group consisting of a plant extract, a fragrance and a cationic surfactant.   The sheet for cleaning anus or genital area according to claim 1, wherein the β-glucuronidase inhibitor is at least one selected from the group consisting of a plant extract and a cationic surfactant. The nonionic surfactant having the polyalkylene oxide skeleton in the main chain is at least one selected from the group consisting of compounds represented by the following general formulas (1) to (3): The anus or genital area cleaning sheet according to any one of the above.
_{R 1 COO- (CH 2 CH 2} O) n -H (1)
[In the formula _(1), R 1 CO represents an acyl group of a saturated or unsaturated 4 to 30 carbon atoms, n is a number of 1 to 50 in weight average. ]
_{R 2 O- (CH 2 CH 2} O) n -H (2)
[In the formula (2), R ₂ represents a hydrocarbon group and a saturated or unsaturated straight-chain or branched-chain having 4 to 30 carbon atoms, n is a number of 1 to 50 in weight average. ]
_{R 3 O- (CH 2 CH 2} O) n - (CH 2 CH (CH 3) O) m -H (3)
[In the formula (3), R ₃ represents a linear or branched hydrocarbon group having 4 to 30 carbon atoms and a saturated or unsaturated hydrocarbon group, n is a weight average of 0 to 50, and m is a mass average. The number of 1-50 is shown. ] The fiber sheet is a nonwoven fabric containing 20 to 70% by weight of cellulosic fibers, the basis weight of the nonwoven fabric is 20 to 100 g / m ² , the wet thickness is 0.45 to 1.0 mm, and the wet porosity. Is 0.02 to 0.2 g / cm ³ , and the nonwoven fabric has an unevenness or an opening, and the anus or genital area cleaning sheet according to any one of claims 1 to 4. The sheet for anus or genital area cleaning according to any one of claims 1 to 5 , wherein the fiber sheet is a water-decomposable sheet mainly composed of cellulosic fibers, and the water-degradable sheet contains a water-soluble binder. .

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