Wet wipe solution and wet wipes

Abstract

To provide a chemical solution for wet wipers even when a fragrance having a masking effect and a modulating effect is added to an alcohol-free chemical solution for wet wipers, having good compatibility with the chemical solution, maintaining a deodorizing effect (the masking effect and modulating effect) of the fragrance when a wet wiper is used, and having low skin irritation and less stickiness, and wet wiper.SOLUTION: A chemical solution for wet wipers contains a fragrance having a masking effect and a modulating effect and contains no alcohol, where a pH of the chemical solution is 4.0 or more and 7.0 or less. The chemical solution contains a surfactant selected from at least one type of propylene glycol, butylene glycol and polyoxyethylene oleyl ether, in a total mixing amount of 0.1% or more and 10% or less, and a ratio of the total mixing amount of surfactant and the mixing amount of fragrance is 1:3 or more and 10:1 or less. A wet wiper is also provided.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a chemical solution for wet wipes containing a fragrance having a masking effect and a modulating effect, and to a wet wipe using the chemical solution. [Background technology]

[0002] In recent years, the number of people requiring care has been increasing, placing a heavy burden on caregivers in facilities and at home. In caregiving, the handling of bodily waste, in particular, can be a burden for caregivers due to its odor.

[0003] To address these odor problems, technologies have been developed that eliminate odors by suppressing the generation and increase of odor-causing substances. On the other hand, as an alternative method of deodorizing, products containing fragrances, such as wet wipes for babies, are sold in stores. These products use a technique called masking, where the fragrance overwrites the odor of excrement. However, fragranced wet wipes have problems, such as mixing with the odor of feces during excrement disposal, resulting in an even more unpleasant smell.

[0004] As a technology to suppress the generation and increase of the aforementioned causative substances, for example, Patent Document 1 discloses a sheet for cleaning the anus or genital area in which an aqueous cleaning agent is impregnated in an amount of 1 to 10 parts by weight per 1 part by weight of a fiber sheet, and the aqueous cleaning agent contains 0.01 to 2.0% by weight of a β-glucuronidase inhibitor and 80 to 99.9% by weight of water, and describes a technology to suppress the generation and increase of substances that cause urine odor using a β-glucuronidase inhibitor. Furthermore, as a technology related to masking, Patent Document 2 describes a plant-based body fragrance formulated according to a differential formulation obtained by excluding only the accent fragrance component from a target formulation of a plant-based body fragrance, which consists of a base fragrance component having a floral scent, an animal-derived fragrance having an animal odor or oily scent, which modifies the floral scent with a human skin scent to create a modulated plant-based scent, and an accent fragrance component consisting of an animal-derived fragrance having a fecal odor, which forms the remainder that further enhances the modulated plant-based scent, and the differential formulation is 1 A fragrance for suppressing fecal odor is disclosed, which consists of a base fragrance component at 0% to 90% by mass and a modulating fragrance component at 1% to 60% by mass. When used alone, the modulated plant-based fragrance is weakened, but when a fecal odor is superimposed, the modulated plant-based fragrance is emphasized by using the malodor as a substitute component for the emphasizing fragrance. The document also describes a technology that, even when mixed with fecal odor, does not change into a fragrance with an increased unpleasant odor, but rather incorporates the fecal odor and changes into a different fragrance, making the unpleasant odor less noticeable. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2010-194255 [Patent Document 2] Japanese Patent Publication No. 2017-006694 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, while the technology disclosed in Patent Document 1 is effective in preventing the generation of substances that cause urine and fecal odor, it cannot be said to be effective against urine and fecal odor once it has occurred.

[0007] On the other hand, when a fragrance as disclosed in Patent Document 2 is included in the liquid of a wet wipe product, alcohol is usually included as part of the liquid component of the wet wipe due to considerations of compatibility with other liquid components (clouding or clumping) and deodorizing properties when the wipe is used (fragrance diffusion). However, especially when used for handling excrement, it is necessary to wipe sensitive areas such as around the anus or areas with poor skin condition such as bedsores, so it is desirable to include such fragrances in an alcohol-free liquid. However, attempting to incorporate such fragrances into a liquid formulation that does not contain alcohol resulted in unstable compatibility with the liquid components and unstable diffusion of the fragrance when the wiper was used. In particular, it was difficult to incorporate functional fragrances such as those with masking and modulating effects.

[0008] This invention has been made in view of these circumstances, and aims to provide a wet wipe solution and wet wipes that have good compatibility with the chemical solution, maintain the deodorizing effect (masking effect and modulation effect) of the fragrance when the wet wipes are used, have low skin irritation and are less sticky, even when a fragrance having a masking effect and modulation effect is added to an alcohol-free wet wipe solution. [Means for solving the problem]

[0009] The inventors conducted diligent research and have completed the present invention, which provides a wet wipe solution containing a fragrance with masking and modulating effects, and which does not contain alcohol. By setting the pH of the solution and the total amount of a specific surfactant within a predetermined range, and setting the ratio of the surfactant to the fragrance to a predetermined ratio, it is possible to create a wet wipe solution and wet wipes that have good compatibility with the alcohol-free wet wipe solution, maintain the deodorizing effect (masking and modulating effect) of the fragrance when using the wet wipes, have low skin irritation and are less sticky. In other words, the present invention provides the following:

[0010] (1) A first aspect of the present invention is a wet wiper solution containing a fragrance having a masking effect and a modulating effect, and not containing alcohol, wherein the pH of the solution is 4.0 or more and 7.0 or less, the solution contains a surfactant selected from at least one of propylene glycol, butylene glycol, and polyoxyethylene oleyl ether in a total amount of 0.1% or more and 10% or less, and the ratio of the total amount of the surfactant to the amount of the fragrance is 1:3 or more and 10:1 or less, characterized in that the wet wiper solution is a wet wiper solution.

[0011] (2) A second aspect of the present invention is a wet wiper in which the wet wiper solution described in (1) is impregnated into a sheet, wherein the sheet is a nonwoven fabric sheet, and the fiber blend ratio of the nonwoven fabric is such that the proportion of wood-derived fibers is 40% or more and 80% or less.

[0012] (3) A third aspect of the present invention is a wet wiper as described in (2), characterized in that the impregnation ratio, which is the ratio of the weight of the chemical solution to the weight of the sheet, is 200% or more and 300% or less. [Effects of the Invention]

[0013] According to the present invention, even when a fragrance having a masking effect and a modulating effect is added to an alcohol-free wet wipe solution, it is possible to provide a wet wipe solution and wet wipes that have good compatibility with the solution, maintain the deodorizing effect (masking effect and modulating effect) of the fragrance when using the wet wipes, have low skin irritation and are less sticky. [Modes for carrying out the invention]

[0014] The following describes in detail embodiments for carrying out the present invention (hereinafter simply referred to as "this embodiment"). This embodiment is illustrative for explaining the present invention and is not intended to limit the present invention to the following content. The present invention can be implemented by modifying it as appropriate within the scope of its gist.

[0015] <Chemical solution The chemical solution for a wet wiper according to an embodiment of the present invention (hereinafter, also simply referred to as "chemical solution") contains a fragrance having a masking effect and a modulating effect and does not contain alcohol. By not containing alcohol, even when a wet wiper impregnated with the chemical solution is used on sensitive parts of the body or on areas with poor skin conditions, there is little irritation to the skin, and by containing a fragrance, it is possible to obtain a wet wiper that also has a deodorizing effect (masking effect and modulating effect).

[0016] (Fragrance) As the fragrance having a masking effect and a modulating effect contained in the chemical solution, as disclosed in JP-A-2017-006694, when the modulated plant-based fragrance is weak alone and the fecal odor-based malodor is superimposed, it is preferable that the fragrance is characterized in that the modulated plant-based fragrance is emphasized and scented by using the malodor as an alternative component to the emphasized fragrance. Such a fragrance is not particularly limited, and examples thereof include "Deo Magic KY-PG245" manufactured by Shikibou Co., Ltd.

[0017] (Surfactant) The chemical solution contains a surfactant selected from at least one of propylene glycol, butylene glycol, and polyoxyethylene oleyl ether, and it is preferable to contain polyoxyethylene oleyl ether among them. Examples of polyoxyethylene oleyl ether include Ores-12 and the like. The total blending amount of the surfactant in the chemical solution is 0.1% or more and 10% or less, and preferably 0.5% or more and 5% or less. If it is less than 0.1%, the compatibility of the fragrance with the chemical solution is poor, and if it exceeds 10%, the chemical solution tends to be sticky. In addition, the ratio of the total blending amount of the surfactant to the blending amount of the fragrance is 1:3 or more and 10:1 or less, and preferably 1:5 or more and 5:1 or less. If the ratio is less than 1:3, the compatibility of the fragrance with the chemical solution is poor, and if it exceeds 10:1, the chemical solution tends to be sticky.

[0018] In addition to the surfactant described above, one or more types of nonionic surfactants may be further included. Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene higher alcohol ether, polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, polyhydric alcohol fatty acid ester, polyoxyethylene polyhydric alcohol fatty acid ester, sorbitan mono-fatty acid ester, sorbitan di-fatty acid ester, sorbitan tri-fatty acid ester, polyoxyethylene sorbitan mono-fatty acid ester, polyoxyethylene sorbitan di-fatty acid ester, polyoxyethylene sorbitan tri-fatty acid ester, polyoxyethylene sorbitol fatty acid ester, glycerin fatty acid ester, sucrose fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene alkylamine, polyoxyethylene fatty acid amide, etc. Among them, polyoxyethylene alkyl ether is preferable.

[0019] (Other components) The chemical solution according to one embodiment of the present invention may contain various components (bactericidal and antifungal components) to improve bactericidal and antifungal performance. These bactericidal and antifungal components include benzoic acid, benzoates, alkyldiaminoethylglycine hydrochloride, photosensitizer, chlorcresol, chlorobutanol, salicylic acid, salicylates, sorbic acid, sorbates, dehydroacetic acid, dehydroacetic acid salts, trichlorohydroxydiphenyl ether, parahydroxybenzoic acid esters and their sodium salts, phenoxyethanol, phenol, sodium lauryldiaminoethylglycine, resorcinol, zinc-ammonia-silver complex substituted zeolite, pantothenyl ethyl benzoate, isopropyl methyl ether, cetylpyridinium chloride, benzalkonium chloride, benzethonium chloride, chlorhexidine hydrochloride, orthophenylphenol, orthophenylphenol Examples include sodium chlorhexidine gluconate, cresol, chloramine T, chloroxylenol, chlorphenesin, chlorhexidine, 1,3-dimethylol-5,5-dimethylhydantoin, alkylisoquinolium bromide, thianthol, thymol, trichlorocarbanilide, parachlorophenol, halocarban, hinokitiol, zinc pyrithione, methylchloroisothiazolinone, methylisothiazolinone, N,N''-methylenebis[N'-(3-hydroxymethyl-2,5-dioxo-4-imidazolidinyl)urea], and paradimethylaminostyrylheptylmethylthiazolium iodide. One or more of these can be included in the drug solution in an amount of, for example, 0.05% to 1.0%. Furthermore, various plant-derived moisturizing ingredients and amino acids may be added to the solution to suppress skin irritation when using wet wipes impregnated with the solution.

[0020] The pH of the medicinal solution is between 4.0 and 7.0, preferably between 4.3 and 6.5, and more preferably between 4.5 and 6.0. If the pH is below 4.0, it will cause significant skin irritation, and if it exceeds 7.0, the compatibility of the fragrance with the medicinal solution will be poor. The pH of the medicinal solution can be adjusted by adding an organic acid with buffering properties and its salt to the impregnation solution. Furthermore, the water content in the chemical solution is preferably 80% or more, and more preferably 90% or more. When the water content is within the above numerical range, the chemical solution and wet wipes impregnated with the chemical solution can be made to cause less skin irritation.

[0021] <Wet wipes> A wet wipe according to one embodiment of the present invention is a wet wipe in which the above-mentioned wet wipe chemical solution is impregnated into a sheet. In this case, the impregnation ratio, which is the ratio of the weight of the liquid to the weight of the sheet, is preferably 200% to 300%, more preferably 220% to 290%, and even more preferably 240% to 280%. If the impregnation ratio is less than 200%, the masking and modulating effects of the fragrance will decrease, and if the impregnation ratio exceeds 300%, the liquid will become sticky and difficult to wipe off with a wet wipe.

[0022] (Sheet) The sheets used in wet wipes are preferably nonwoven fabric sheets made of wood fibers and chemical fibers. Examples of wood fibers include pulp, rayon, and cotton, with rayon being preferred from the viewpoint of texture and low linting. Examples of chemical fibers include polyethylene terephthalate, polyethylene, and polypropylene, with polyethylene terephthalate being preferred. Thermoplastic fibers may be added to bond these together. The thermoplastic fibers may be a single resin component or a combination of multiple resin components. Furthermore, the fiber composition ratio of the nonwoven fabric is preferably such that the proportion of wood-derived fibers is 40% to 80%, more preferably 45% to 75%, and even more preferably 50% to 70%. When the proportion of wood-derived fibers is within the above numerical range, the sheet has a good tactile feel, and the absorption of chemicals and diffusion of fragrances are also good.

[0023] Nonwoven fabrics are manufactured using various methods, including spunlace, airlaid, spunbond, and air-through, but spunlace is preferred among them. The basis weight (weight per square meter) of the nonwoven fabric is 30 g / m 2 More than 60g / m 2 Preferably, it is 33 g / m 2 More than 50g / m 2 It is more preferable that the following conditions are met: 35 g / m 2 More than 45g / m 2 It is even more preferable that the basis weight is 30g / m². 2 If the weight is less than 60g / m², the amount of liquid solution the sheet holds will be insufficient, and the wet wipe will dry out during wiping. 2 Beyond a certain point, the sheet becomes too thick, making it difficult to wipe your body with a wet wipe.

[0024] (shape) In one embodiment of the present invention, the wet wipes are preferably arranged so that each sheet is stacked individually and can be removed in a pop-up fashion, and it is also preferable that the stacked wet wipes are folded in a Z-shape or V-shape and interlocked with each other. Furthermore, the wet wipes may be bottle products in which nonwoven fabric is wound into a roll, filled into a container, and can be removed by cutting along perforations at predetermined intervals. Alternatively, they may be products in which each wipe is folded into quarters or sixths and stacked, and do not pop up.

[0025] The dimensions of the sheet should preferably be between 150mm and 600mm on each side. If the sheet has these dimensions, it can be used as a wet wipe for easily cleaning the body.

[0026] (packaging) Furthermore, the wet wipes according to one embodiment of the present invention are preferably pillow-packaged in a packaging film having an opening, such as disclosed in Japanese Patent Application Publication No. 2008-189370, but they may also be in a stand-up pouch shape or other shapes. When it is packaged with a packaging film, it is preferable to use a flap seal or a lid at the outlet to prevent the wet wipes from drying.

[0027] The packaging film for packaging wet wipes has a two-layer or more structure, and it is preferable to have a barrier layer in one layer. If there is no barrier layer, the wet wipes may dry easily, and the fragrance in the chemical solution may volatilize, making it difficult to obtain a deodorizing effect. When the packaging film has a two-layer or more structure, it is preferably configured, for example, as a base material / barrier layer / sealant layer. As the base material, it is preferable to use a polyester film such as polyethylene terephthalate, or a polyolefin film such as polyethylene or polypropylene. For the barrier layer, it is preferable to use, for example, an aluminum foil or a vapor-deposited film. And for the sealant layer, it is preferable to use a polyethylene or polypropylene film. Examples of the packaging configuration using the above-mentioned materials include a configuration such as PET12 / VMPET12 / LLDPE40.

[0028] In addition, the size (area) of the outlet in the packaging film is preferably 800 mm 2 or more and 6000 mm 2 or less. If the size is less than 800 mm 2 , it is difficult to take out the wet wipes from the outlet, and if the size exceeds 6000 mm 2 , the fragrance in the chemical solution may volatilize during storage after opening.

[0029] Although the present invention has been described using the embodiments above, it is needless to say that the technical scope of the present invention is not limited to the scope described in the above embodiments. It is obvious to those skilled in the art that various changes or improvements can be made to the above embodiments. Also, it is obvious from the description of the claims that forms with such changes or improvements can also be included in the technical scope of the present invention.

Example

[0030] The present invention will be described in detail below with reference to examples. However, the present invention is not limited in any way to the examples shown below.

[0031] <Preparation of chemical solution> Examples 1-12 and Comparative Examples 1-4 were prepared, each containing the disinfectant, preservative, surfactant, pH adjuster, solvent, humectant, and fragrance in the amounts shown in Table 1 below. A solution containing alcohol was also prepared as a reference example. In each example, comparative example, and reference example, the disinfectant used was benzalkonium chloride, the preservative was propynyl iodide butylcarbamate, the surfactant was polyoxyethylene oleyl ether, the pH adjuster was citric acid, the solvent was water, the humectant was glycerin (glycereth-26), and the fragrance was Deomagic KY-PG245.

[0032] <Creating packaging for wet wipes> After preparing the chemical solution, wet wipes for Examples 1-12, Comparative Examples 1-4, and the Reference Example were made by impregnating nonwoven fabric sheets with the prepared chemical solution. In all cases, the nonwoven fabric sheets used rayon as the wood-derived fiber and polyethylene terephthalate as the chemical fiber, with a basis weight of 40 g / m². 2 The dimensions were set to 200mm x 200mm. Then, a package was prepared in which 72 sheets of wet wipes, each impregnated with a chemical solution, were stacked together by folding each sheet in a Z-shape so that they could be dispensed in a pop-up format, and then packaged in a packaging film with an opening. In all examples except Example 10, the packaging film was composed of PET12 / VMPET12 / LLDPE40. The following sensory evaluations were performed on the wet wipe packages of each example, comparative example, and reference example that were prepared.

[0033] (Solubility (cloudiness, formation of lumps, etc.)) We evaluated whether participants found it unpleasant to have precipitates or insoluble matter on the sheet after taking one wet wipe from the package and wiping. Of the 30 monitors, a rating of ◎ was given if 0 to 3 people reported feeling uncomfortable, ○ if 4 to 6 people reported feeling uncomfortable, △ if 7 to 10 people reported feeling uncomfortable, and × if 11 or more people reported feeling uncomfortable.

[0034] (Deodorizing properties) The deodorizing effect (masking effect and modulation effect) against a simulated fecal odor (0.02g of dimethyl sulfide (0.1%), isovaleric acid (0.2%), dimethyl disulfide (0.2%), butyric acid (0.3%), indole (0.5%), and dipropylene glycol (98.7%)) was evaluated by a certified odor assessor, and the deodorizing effect against the unprocessed product was assessed. A rating of ◎ was given if the unpleasantness level improved by 3 points or more compared to the unprocessed product, ○ if it improved by 2.5 points or more, △ if it improved by 2 points or more, and × if it improved by 2 points or less.

[0035] (Difficulty drying) We evaluated the weight change of the chemical solution after removing one wet wipe from the package and leaving it undisturbed for 10 minutes in a room at room temperature (23°C) and humidity (50%). A dry weight loss of 0% to 20% was marked with ◎, 21% to 40% with ○, 41% to 50% with △, and 51% or more with ×.

[0036] (stickiness) After each user took a wet wipe from the package and wiped their skin, they evaluated whether the wiped area felt sticky and uncomfortable. Of the 30 monitors, a rating of ◎ was given if 0 to 3 people reported discomfort, ○ if 4 to 6 people reported discomfort, △ if 7 to 10 people reported discomfort, and × if 11 or more people reported discomfort.

[0037] (Ease of removing sheets) We evaluated how easy it was to remove a wet wipe from the package through the dispenser opening. Of the 30 monitors, a rating of ◎ was given if 0 to 3 people answered that it was difficult to remove, ○ if 4 to 6 people answered ○, △ if 7 to 10 people answered △, and × if 11 or more people answered ×.

[0038] (Skin irritation) After removing one wet wipe from the package, users were evaluated for skin irritation after wiping their skin 30 times back and forth. Of the 30 monitors, a rating of ◎ was given if 0 to 3 people reported experiencing irritation, ○ if 4 to 6 people reported it, △ if 7 to 10 people reported it, and × if 11 or more people reported it.

[0039] The components and pH of the chemical solution, the fiber ratio of the sheet and the impregnation ratio of the chemical solution, the presence or absence of a barrier film in the package and the dimensions of the opening, and the results of each sensory evaluation are shown in Table 1 below.

[0040] [Table 1]

[0041] Based on the above, according to this embodiment, even when a fragrance having a masking effect and a modulating effect is added to an alcohol-free wet wipe solution, it is possible to provide a wet wipe solution and wet wipes that have good compatibility with the solution, maintain the deodorizing effect (masking effect and modulating effect) of the fragrance when using the wet wipes, have low skin irritation and are less sticky.

Claims

1. A wet wiper solution containing a fragrance that has a masking and modulating effect, and which does not contain alcohol, The pH of the chemical solution is between 4.0 and 7.

0. The chemical solution contains a surfactant selected from at least one of the following: propylene glycol, butylene glycol, and polyoxyethylene oleyl ether, in a total amount of 0.5% to 5%. A chemical solution for wet wipes, characterized in that the ratio of the total amount of surfactants to the amount of fragrance is 1:3 or more and 10:1 or less.

2. A wet wiper having a sheet impregnated with the wet wiper solution described in claim 1, The sheet is a nonwoven fabric sheet, and the fiber composition ratio of the nonwoven fabric is characterized in that the proportion of wood-derived fibers is 40% or more and 80% or less, respectively, for a wet wipe.

3. The wet wipe according to claim 2, characterized in that the impregnation ratio, which is the ratio of the weight of the chemical solution to the weight of the sheet, is 200% or more and 300% or less.

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