JP2016022272A - Wet wiper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wet wiper excellent in wiping performance, and performance (re-contamination prevention) of taking in and not separating wiped dirt.SOLUTION: The wet wiper is provided which includes a fabric, and a sterilization liquid impregnated in the fabric and in which: the fabric includes hydrophilic fibers and hydrophobic fibers; a content of the hydrophobic fibers is 20-80 mass% based on 100 mass% of the fabric; the hydrophobic fibers exist in an amount of 30-100 area% on the front face of the fabric; and an existence ratio (area%) of the hydrophobic fibers on the front face of the fabric, and a content (mass%) of the hydrophobic fibers satisfy the following relationship: an existence ratio (area%) of the hydrophobic fibers on the front face of the fabric>a content (mass%) of the hydrophobic fibers.SELECTED DRAWING: None

Description

  The present invention relates to a wet wiper.

  The wet wiper is used in various applications for the purpose of cleaning the surface to be wiped, and various studies are made on the required performance according to various applications.

  For example, Patent Document 1 discloses a wiping material effective for gram-negative bacteria and / or positive bacteria. In addition, Patent Document 2 discloses a mold prevention / mold removal sheet that has both a mold prevention effect and a mold removal effect and combines a highly safe mold prevention / mold removal composition with an improved application surface. . Furthermore, Patent Document 3 contains a composition that can provide a cleaning effect and protection against water and oily soils, while at the same time imparting gloss to a treated substrate such as the surface of natural leather or artificial leather. A wipe is disclosed.

JP 2005-513074 gazette JP 2007-308442 A Special Table 2007-500263

  When the wet wiper cleans the surface to be wiped, the wet wiper takes in the wiped material therein. At this time, the wiping object absorbed in the wiper may be re-released and adhered (recontaminated) to the surface to be wiped.

  In applications requiring extremely high cleanliness, for example, medical applications, it is not desirable that the surface to be wiped be recontaminated from the viewpoint of preventing unexpected situations such as secondary infection. In addition, from the viewpoint of merchandise such as a wet wiper that can be easily used and used frequently, it is significant that re-contamination of the surface to be wiped can be prevented in applications requiring high cleanliness.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a wet wiper which is excellent in scraping performance and excellent in performance of taking in and removing the scraped dirt (preventing recontamination).

  As a result of intensive studies to solve the above problems, the present inventors have found that the above problems can be solved by having a predetermined relationship between the hydrophilic fibers and the hydrophobic fibers in the fabric. The invention has been completed.

That is, the present invention is as follows.
[1]
A fabric and a sterilizing solution impregnated in the fabric,
The fabric includes hydrophilic fibers and hydrophobic fibers,
The content of the hydrophobic fiber is 20 to 80% by mass with respect to 100% by mass of the fabric,
30-100 area% of the hydrophobic fiber is present on the surface of the fabric,
The presence ratio (area%) of the hydrophobic fibers on the surface of the fabric and the content (mass%) of the hydrophobic fibers satisfy the following relationship:
Presence ratio (area%) of the hydrophobic fibers on the surface of the fabric> Content (mass%) of the hydrophobic fibers
Wet wiper.
[2]
The wet wiper according to [1], wherein the hydrophobic fiber includes polyester.
[3]
The wet wiper according to [1] or [2] above, wherein the hydrophilic fiber includes wood pulp.
[4]
The wet wiper according to any one of [1] to [3], wherein the hydrophobic fiber has a tensile strength of 2.5 to 7.5 g / d.
[5]
The wet wiper according to any one of [1] to [4], wherein the sterilizing solution contains a quaternary ammonium salt.
[6]
The wet wiper according to any one of [1] to [5], which is for medical use.

  ADVANTAGE OF THE INVENTION According to this invention, the wet wiper which is excellent in the scraping performance, and is excellent in the performance which does not take off and remove | eliminates the scraped dirt (precontamination prevention) can be provided.

Hereinafter, a mode for carrying out the present invention (hereinafter referred to as “the present embodiment”) will be described in detail. In addition, this invention is not limited to the following embodiment, It can implement by changing variously within the range of the summary.

[Wet wiper]
The wet wiper of the present embodiment has a fabric and a sterilization solution impregnated in the fabric, the fabric includes hydrophilic fibers and hydrophobic fibers, and the content of the hydrophobic fibers is It is 20 to 80% by mass with respect to 100% by mass of the fabric, the hydrophobic fiber is present on the surface of the fabric in an amount of 30 to 100% by area, and the proportion (area) of the hydrophobic fiber on the surface of the fabric. %) And the content (mass%) of the hydrophobic fiber satisfy the following relationship.
Presence ratio (area%) of the hydrophobic fibers on the surface of the fabric> Content (mass%) of the hydrophobic fibers

  Here, it is necessary to consider the specific gravity of each fiber in comparing the proportion (area%) of the hydrophobic fiber on the surface with the content (mass%) of the hydrophobic fiber. Since it is before and after, (area%) and (mass%) are compared as they are.

  The wet wiper of the present embodiment has a configuration in which the fabric surface contains more hydrophobic fibers than the inside, and therefore has excellent scraping performance and excellent performance of taking in and removing the scraped dirt (preventing recontamination). Since the hydrophobic fibers on the fabric surface are not impregnated with the impregnating liquid and do not swell, the dirt on the surface to be wiped can be efficiently scraped and removed without being deformed by the wiping pressure at the time of wiping. The dirt thus scraped off is absorbed in the portion where the ratio of hydrophilic fibers in the fabric is large due to the movement of the impregnating liquid in the wiper accompanying the change in the wiping pressure, and it becomes difficult to return to the surface to be wiped again.

[Fabric]
The fabric includes hydrophilic fibers and hydrophobic fibers. The hydrophilic fiber and the hydrophobic fiber are not particularly limited, and examples thereof include natural fibers, synthetic fibers, semi-synthetic fibers, regenerated fibers, and inorganic fibers. These fibers may be used alone or in combination of two or more.

  In particular, the hydrophilic fiber is not particularly limited, and examples thereof include natural fiber, semi-synthetic fiber, and regenerated fiber. Of these, natural fibers and regenerated fibers are preferable, and natural fibers are particularly preferable. The use of natural fibers tends to further improve the performance of taking in and removing scratched dirt (preventing recontamination). Here, “hydrophilic fiber” refers to a fiber that exhibits the property of being able to contain water, and is a fiber having a high official moisture content.

  The official moisture content of the hydrophilic fiber is preferably 2.0 or more, more preferably 5.0 or more, and still more preferably 8.0 or more. When the official moisture content of the hydrophilic fiber is 2.0 or more, there is a tendency that the performance of taking in and removing the scraped dirt (preventing recontamination) is further improved. As the official moisture content, those described in JIS L 1030 can be used.

  Moreover, it does not specifically limit as a hydrophobic fiber, For example, a synthetic fiber, an inorganic fiber, etc. are mentioned. Of these, synthetic fibers are preferable. By using a synthetic fiber, the strength of the wet wiper increases and the scraping performance tends to be further improved. Here, “hydrophobic fiber” refers to a fiber exhibiting the property that it cannot contain water.

  The tensile strength of the hydrophobic fiber is preferably 2.5 to 7.5 g / d, more preferably 3.0 to 6.5 g / d, and still more preferably 4.0 to 6.0 g / d. It is. When the tensile strength of the hydrophobic fiber is 2.5 g / d or more, the strength of the wet wiper tends to be further improved. Moreover, when the tensile strength of the hydrophobic fiber is 7.5 g / d or less, the flexibility of the wet wiper tends to be further improved.

  Further, the official moisture content of the hydrophobic fiber is preferably less than 2.0, and more preferably less than 1.0. When the official water ratio of the hydrophobic fiber is less than 2.0, the strength of the wet wiper increases and the scraping performance tends to be further improved. As the official moisture content, those described in JIS L 1030 can be used.

  Although it does not specifically limit as natural fiber, For example, cellulosic fibers, such as cotton, flax, and wood pulp, chitin, chitosan, wool, silk, etc. are mentioned.

  Although it does not specifically limit as synthetic fiber, For example, vinylon, vinylidene; Polyesters, such as polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate, copolymer polyester; Linear low density polyethylene, low density polyethylene, high density polyethylene, polypropylene Polyolefins such as nylon 6, nylon 66, nylon 610 and nylon 46; acrylic fibers such as polyacrylonitrile; polyurethane, polyvinyl chloride, aramid, benzoate, polyclar, novoloid, polyfluoroethylene and the like. Among these, polyester is preferable from the viewpoint of improving the recontamination prevention performance.

  In the case of a composite fiber, a combination of polyethylene terephthalate and polyethylene, polypropylene, polyethylene, and polyamide fiber can be used. In the present embodiment, polyester fibers are preferred because they are breathable and can be flexible.

  Although it does not specifically limit as a semisynthetic fiber, For example, an acetate, a triacetate, a promix etc. are mentioned.

  The recycled fiber is not particularly limited, and examples thereof include rayon, cupra, polynosic rayon, lyocell, and tencel.

  Although it does not specifically limit as inorganic fiber, For example, glass fiber, carbon fiber, etc. are mentioned.

  Among these, it is preferable that the fabric includes natural fibers and synthetic fibers. By including the natural fiber and the synthetic fiber, the dirt scraping performance is excellent, and there is a tendency that the balance between the performance of preventing the picked-up dirt from being taken away (pre-contamination prevention) and the strength of the wet wiper is further improved.

  The content of the hydrophilic fiber is preferably 20 to 80% by mass, more preferably 30 to 70% by mass, and further preferably 40 to 60% by mass with respect to 100% by mass of the fabric. When the content of the hydrophilic fiber is 20% by mass or more, the performance of taking in and removing the scratched dirt (preventing recontamination) is further improved. Moreover, when the content of the hydrophilic fiber is 80% by mass or less, the strength of the wet wiper is further improved, and the occurrence of lint or the like can be suppressed.

  The content of the hydrophobic fiber is preferably 20 to 80% by mass, more preferably 30 to 70% by mass, and further preferably 40 to 60% by mass with respect to 100% by mass of the fabric. When the content of the hydrophobic fiber is 20% by mass or more, the strength of the wet wiper increases and the dirt scraping performance tends to be further improved. Further, when the content of the hydrophobic fiber is 80% by mass or less, the flexibility of the fabric is increased and the wiping performance tends to be further improved.

  The hydrophobic fiber content is extracted from the nonwoven fabric with a solvent such as DMF, 1,1,1,3,3,3-hexafluoro-2-propanol, xylene, and the extracted mass and IR of the extract, Substance analysis and composition ratio can be measured by NMR analysis. Further, the content of the hydrophilic fiber can be calculated from the weight of the fabric and the content of the hydrophobic fiber.

  The hydrophobic fiber present on the surface of the fabric is preferably 30 to 100 area%, more preferably 40 to 100 area%, and further preferably 50 to 100 area%. When the hydrophobic fiber present on the surface of the fabric is 30% by area or more, the strength of the wet wiper is further improved, and the dirt scraping performance is further improved. Moreover, the hydrophobic fiber which exists in the surface of a fabric is 100 area% or less, and the performance which does not take in and remove | eliminates the scraped dirt (re-contamination prevention) improves more. In addition, the ratio of the hydrophobic fiber which exists in the surface of a fabric can be measured by the method as described in an Example. The ratio of hydrophobic fibers present on the surface of the fabric is, for example, in the case of the spunlace manufacturing method, after forming the web by laminating the fibers in the order of hydrophobic fibers, hydrophilic fibers, and hydrophobic fibers and then tapping with high-pressure water. In some cases, it increases by lowering the pressure of water, and decreases by increasing the pressure of water and increasing the amount of water. In addition, when a web is formed by mixing hydrophilic fibers and hydrophobic fibers and laminating in a single layer, it is increased by lowering the pressure of water when hitting with high-pressure water, and the pressure of water is increased. Decrease by increasing the amount of water.

The proportion (area%) of hydrophobic fibers on the surface of the fabric and the content (mass%) of hydrophobic fibers satisfy the following relationship. Thus, the presence ratio (area%) of hydrophobic fibers on the surface of the fabric is larger than the content (mass%) of the hydrophobic fibers, so that the fabric has a surface layer rich in hydrophobic fibers and hydrophilicity. The fiber has a three-layer structure having a rich intermediate layer. As a result, the scraping performance and the performance of taking in and removing the scraped dirt (pre-contamination prevention) are further improved.
Presence ratio (area%) of hydrophobic fibers on the surface of the fabric> Hydrophobic fiber content (mass%)

  The difference ((area%) − (mass%)) between the proportion (area%) of hydrophobic fibers on the surface of the fabric and the content (mass%) of hydrophobic fibers is preferably 10 to 40, and more Preferably it is 15-35, More preferably, it is 20-30. When the difference ((area%) − (mass%)) is 10 or more, there is a tendency to further improve the balance between the performance of removing dirt and the performance of taking in and removing the removed dirt (preventing recontamination). . Moreover, when the difference ((area%) − (mass%)) is 40 or less, the balance between the wiping performance relating to the flexibility of the fabric and the dirt scraping performance tends to be further improved.

  Although it does not specifically limit as a kind of fabric, For example, a woven fabric, a nonwoven fabric, a knitted fabric etc. are mentioned. Among these, a nonwoven fabric is preferable from the viewpoints of water absorption, flexibility, and moisture permeability.

  As for the form of the cloth, the cloth is cut into a sheet shape, Z-folded and overlapped, impregnated with a sterilizing solution, wrapped in a pillow, or rolled into a roll and impregnated with a sterilizing solution. Things. Among these, the thing of the form which wound the fabric in roll shape is preferable.

The density of the fabric is preferably 0.10 to 0.50 g / cm ³ , more preferably 0.13 to 0.40 g / cm ³ , and still more preferably 0.15 to 0.30 g / cm ³ . is there. When the density of the fabric is 0.10 g / cm ³ or more, the dirt scraping performance tends to be further improved. Moreover, when the density of the fabric is 0.50 g / cm ³ or less, there is a tendency that the performance of taking in and removing the scraped dirt (preventing recontamination) is further improved.

[Disinfectant]
Although it does not specifically limit as a disinfection liquid, For example, the solution containing components (henceforth only an "active ingredient") which has actions, such as cleaning, disinfection, bacteriostasis, disinfection, and disinfection, is mentioned.

(Active ingredient)
Although it does not specifically limit as an active ingredient, For example, quaternary ammonium salt; 2,4,4'-trichloro-2'-hydroxy-diphenyl ether or 2,2'-dihydroxy-5,5'-dibromo-diphenyl ether Halogenated diphenyl ethers such as phenoxyethanol, phenoxypropanol, phenoxyisopropanol, phenol compounds such as parachloro-meta-xylenol (PCMX), etc .; 2,2′-methylenebis (4-chlorophenol), 2,2′-methylenebis (3,4,6-trichlorophenol), 2,2′-methylenebis (4-chloro-6-bromophenol), bis (2-hydroxy-3,5-dichlorophenyl) sulfide, or bis (2-hydroxy-5) -Chlorobenzyl) sulfide, etc. Bisphenyl compounds; halogenated carbanilides such as 3,4,4′-trichlorocarbanilide, etc .; benzyl alcohol; chlorhexidine; chlorhexidine gluconate; chlorhexidine hydrochloride. An active ingredient can be suitably selected according to the use of a wet wiper, and may be used individually by 1 type, or may use 2 or more types together.

（式（１）中、Ｒ¹、Ｒ²、Ｒ³、及びＲ⁴は、各々独立して、アルキル基、（ＣＨ₂ＣＨ₂Ｏ）_mＨ（ｍは、２〜４０の整数を示す）、アリール基、アラルキル基、アルキルアリール基を表し、Ｒ¹、Ｒ²、Ｒ³、及びＲ⁴の２つが結合して複素環構造を形成していてもよく、Ｘは、各々独立して、１価又は２価の陰イオンを表し、ｎは、１又は２の整数を表す。） Among these, it is preferable that the sterilizing solution contains at least a quaternary ammonium salt. The quaternary ammonium salt is not particularly limited as long as it has a quaternary ammonium salt structure represented by the following (1) in the molecule. For example, a halogen such as benzalkonium chloride. Benzalkonium halides; benzethonium halides such as benzethonium chloride; alkylpyridinium salts such as cetylpyridinium chloride; alkyltrimethylammonium salts such as octyltrimethylammonium salt, lauryltrimethylammonium salt, myristyltrimethylammonium salt, and cetyltrimethylammonium salt; Examples thereof include oxyethylene alkylmethyl ammonium salts.

(In the formula (1), R ¹ , R ² , R ³ and R ⁴ are each independently an alkyl group, (CH ₂ CH ₂ O) _m H (m represents an integer of 2 to 40). , An aryl group, an aralkyl group, and an alkylaryl group, and ^{two of} R ¹ , R ² , R ³ , and R ⁴ may be bonded to form a heterocyclic structure, and each X is independently Represents a monovalent or divalent anion, and n represents an integer of 1 or 2.)

  Among these, from the viewpoint of bactericidal performance, alkylbenzyldimethylammonium salts are preferable, alkylbenzyldimethylammonium salts having an alkyl group having 8 to 18 carbon atoms are more preferable, and laurylbenzyldimethylammonium salts are more preferable. Such a quaternary ammonium salt has a high bactericidal effect, and since the decrease in the bactericidal effect due to volatilization or the like is small, the bactericidal effect can be maintained for a long period of time.

Although it does not specifically limit as a quaternary ammonium salt, Specifically, although shown by following formula (2), (3), (4), and (5) is mentioned.
[R (CH ₃ ) ₃ N ⁺ ] _n X Formula (2)
[R (CH ₃ ) N ⁺ (CH ₂ CH ₂ O) _{m ′} H [(CH ₂ CH ₂ O) _{m ″} H]] _n X ·· Formula (3)
[R (CH ₃ ) ₂ N ⁺ CH ₂ C ₆ H ₅ ] _n X Formula (4)
[RPy ⁺ ] _n X Formula (5)
(In the formulas (2), (3), (4), and (5), R each independently represents an alkyl group, and each X independently represents a monovalent or divalent anion. And m ′ and m ″ represent an integer of 2 to 40 and represent an integer of n or 2. Py is an abbreviation for pyridine.)

  Carbon number of the alkyl group represented by R is preferably 8-18, more preferably 10-16, and still more preferably 12-14. More specifically, an octyl group, a lauryl group, a myristyl group, and a cetyl group are preferable, and a lauryl group is more preferable. When the carbon number of the alkyl group represented by R is 8 or more, the sterilizing power of the sterilizing solution tends to be further improved. Moreover, since the carbon number of the alkyl group represented by R is 18 or less, the solubility of the active ingredient is further improved and the content of the active ingredient can be further improved. Power tends to improve.

The anion represented by X is not particularly limited, and examples thereof include F ⁻ , Cl ⁻ , Br ⁻ , I ⁻ , NO ⁻ , and SO ₄ ²⁻ . Among these, electronegativity higher Cl ^- is preferred.

  The content of the active ingredient is preferably 0.010 to 30% by mass, more preferably 0.10 to 5.0% by mass, and still more preferably 0.10% with respect to 100% by mass of the sterilizing solution. It is -1.0 mass%. When content of an active ingredient is 0.010 mass% or more, it exists in the tendency for bactericidal performance to improve more. Moreover, it exists in the tendency for skin irritation to be suppressed more because content of an active ingredient is 30 mass% or less.

(solvent)
The sterilizing solution contains a solvent. Although it does not specifically limit as a solvent, For example, water and / or a nonaqueous solvent are mentioned. By using a non-aqueous solvent, the solubility of the active ingredient or other ingredients tends to be further improved.

  Although it does not specifically limit as a nonaqueous solvent, For example, glycols, such as propylene glycol, butylene glycol, triethylene glycol, hexylene glycol, polyethyleneglycol, ethoxydiglycol, and dipropyleneglycol; Ethanol, n-propanol, and isopropanol Alcohols such as triglyceride, ethyl acetate, acetone, triacetin, and combinations thereof.

  The amount of the solvent is preferably 99.99 to 70% by mass, more preferably 99.9 to 95.0% by mass, and further preferably 99.9% with respect to 100% by mass of the total amount of the sterilization solution. ˜99.0% by mass. When the amount of the solvent is 70% by mass or more, the impregnation performance of the active ingredient into the fabric tends to be further improved. Moreover, when the amount of the solvent is 99.99% by mass or less, the active ingredient can be efficiently released from the wet wiper, and the sterilization performance tends to be further improved.

  The amount of the non-aqueous solvent is preferably 1.0 to 80% by mass, more preferably 1.0 to 30% by mass, and still more preferably 1.0 to 100% by mass of the total amount of the sterilizing solution. ˜5 mass%. When the amount of the solvent is 1.0% by mass or more, the impregnation performance of the active ingredient into the fabric tends to be further improved. Moreover, when the amount of the solvent is 80% by mass or less, there is a tendency that the performance of taking the wiped dirt into the wet wiper and keeping it away is improved.

(Other ingredients)
The sterilizing solution may contain a surfactant, a lower alcohol, a chelating agent, an antiseptic, a coloring agent, a fragrance, a stabilizer, and the like.

  The surfactant is not particularly limited, and examples thereof include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants. Surfactant may be used individually by 1 type, or may use 2 or more types together.

  The nonionic surfactant is not particularly limited, and examples thereof include glycerin fatty acid esters such as glycerin fatty acid ester and glyceryl monostearate; polyglyceryl monooleate, polyglyceryl pentaoleate, polyglyceryl decaoleate, hexaglyceryl monolaurate, monolauric acid Polyglycerin fatty acid esters such as decaglyceryl, decaglyceryl monomyristate, decaglyceryl monostearate, decaglyceryl monoisostearate; polyoxyethylene glycerin fatty acid esters such as polyoxyethylene glyceryl monostearate; sorbitan monolaurate, mono Sorbitan fatty acid esters such as sorbitan oleate and sorbitan trioleate; polyoxyethylene monostearate Polyoxyethylene sorbitan fatty acid esters such as bitane and trioleic acid polyoxyethylene sorbitan; polyoxyethylene sorbite fatty acid esters such as monolauric acid polyoxyethylene sorbite and tetraoleic acid polyoxyethylene sorbite; sucrose lauric acid ester, etc. Sucrose fatty acid esters: polyoxyethylene lanolin, polyoxyethylene lanolin, lanolin alcohol, beeswax derivatives such as polyoxyethylene sorbit beeswax, polyoxyethylene castor oil, cured such as polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil Castor oils; polyoxyethylene sterols such as polyoxyethylene cholestanol ether / hydrogenated sterols; ethylene glycol monostearate, mono Polyethylene glycol fatty acid esters such as polyethylene glycol sulfonate; polyoxyethylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene cetyl ether, polyoxyethylene behenyl ether; polyoxyethylene polyoxypropylene cetyl ether, polyoxyethylene Polyoxyethylene polyoxypropylene alkyl ethers such as polyoxypropylene decyl tetradecyl ether; Polyoxyethylene alkyl phenyl ethers such as polyoxyethylene nonylphenyl ether; Polyoxyethylene alkylamines and fatty acids such as polyoxyethylene stearamide Amides; Polyoxyethylene alkylphenyl ethers such as polyoxyethylene octylphenyl ether And alkyl dimethylamine oxides such as stearyl dimethylamine oxide.

  Although it does not specifically limit as an anionic surfactant, For example, Alkylbenzene sulfonates, such as sodium dodecylbenzenesulfonate; Fatty acid salts, such as sodium laurate; Polyoxyethylene lauryl ether sodium phosphate, Polyoxyethylene cetyl ether phosphate Phosphate salts such as polyoxyethylene alkyl ether phosphate such as sodium; N-acylaminohydrochloric acid such as sodium N-lauroyl-L-glutamate; Polyoxyethylene alkyl ether phosphates such as polyoxyethylene lauryl ether phosphate; N-acyl taurine salts such as sodium lauroylmethyl taurine and sodium myristoyl methyl taurine; sulfonates such as sodium tetradecene sulfonate; al such as sodium lauryl sulfate Polyoxyethylene alkyl ether sulfates such as polyoxyethylene lauryl ether sulfate; Le sulphates lauryl di aminoethyl sodium glycine, and the like alkyldiaminoethylglycine hydrochloride.

  Although it does not specifically limit as a lower alcohol, For example, C1-C4 water-soluble alcohol is mentioned. Specifically, monools such as methanol, ethanol, propanol, isopropanol, methoxyethanol, ethoxyethanol, methoxypropanol, methoxyisopropanol; ethylene glycol, propylene glycol, propanediol, butanediol, methylpropanediol, diethylene glycol, butynediol Diols such as glycerol; polyols such as glycerin, butanetriol and erythritol. A lower alcohol may be used individually by 1 type, or may use 2 or more types together.

  The chelating agent is not particularly limited as long as it has a metal capturing action. For example, complexant, alanine, ethylenediaminehydroxyethyl triacetate trisodium, edetic acid, edetate disodium, edetate disodium calcium, edetate trisodium, edet Examples include acid 4 sodium, sodium citrate, citric acid, gluconic acid, tartaric acid, phytic acid, sodium polyphosphate, and sodium metaphosphate. Among these, alanine, disodium edetate, disodium calcium edetate, sodium citrate, citric acid, gluconic acid, tartaric acid, sodium polyphosphate, and sodium metaphosphate are preferable. A chelating agent may be used individually by 1 type, or may use 2 or more types together.

  Examples of the preservative include organic acids and derivatives thereof such as benzoic acid, sodium benzoate, undelenic acid, salicylic acid, sorbic acid, potassium sorbate, dehydroacetic acid, sodium dehydroacetate, paraoxybenzoic acid esters and salts thereof; Phenol, chlorhexidine gluconate, cresol, chlorothymol, chlorophenesin, chlorocresol, dichloroxylenol, dichlorobenzyl alcohol, thiobischlorophenol, thymol, trichlorocarbanilide, trichlorohydroxydiphenyl ether, sodium phenoxide, parachlorophenol, halocarban , Phenylethyl alcohol, phenylphenol, sodium phenylphenol, phenoxyethanol, phenol, Phenols such as benzyl alcohol, photosensitizers such as platonin, pionine, Luminex, and photosensitizer NK143; plant extracts having antibacterial activity such as tea extract, hinokitiol, apple extract, and polylysine; glutaral, chloramine T, chlorhexidine , Diisemopropamidine diisethionate, zinc pyrithione, triclosan, pyrithione Na, furfural, chloramine T and the like. Preservatives may be used alone or in combination of two or more.

  The content of the sterilizing liquid in the wet wiper is preferably 50 parts by mass or more, more preferably 100 parts by mass or more, and further preferably 160 parts by mass or more with respect to 100 parts by mass of the fabric. When the content of the sterilizing liquid in the wet wiper is 50 parts by mass or more, the bactericidal effect tends to be further improved. Further, the content of the sterilizing solution in the wet wiper is preferably 350 parts by mass or less, more preferably 300 parts by mass or less, and further preferably 250 parts by mass or less with respect to 100 parts by mass of the fabric. . When the content of the sterilizing liquid in the wet wiper is 350 parts by mass or less, the remaining wiping after wiping is reduced, and the slimy feeling when the fabric is touched tends to be further suppressed.

  It is preferable that the disinfectant is uniformly impregnated into the fabric.

[Method of manufacturing wet wiper]
Although it does not specifically limit as a manufacturing method of a wet wiper, For example, the method which has the fabric manufacturing process which manufactures a fabric, and the impregnation process which impregnates the disinfection liquid to the obtained fabric is mentioned.

[Fabric manufacturing process]
The fabric manufacturing process is a process of manufacturing a fabric, and a known method can be used depending on the type of the fabric. For example, in the case of using a non-woven fabric as a fabric, there are two processes, web formation and interfiber bonding.

  The web forming process is a process of arranging natural fibers, synthetic fibers, and the like in a sheet shape, and the specific mode of the process varies depending on the arrangement state of the fibers. The fiber arrangement state includes a parallel web in which fibers are arranged in the longitudinal direction, a cross web in which parallel webs are stacked on a cloth, and a random web having no fiber orientation. A cross web or a random web is preferable in that both the strength in the machine direction and the machine direction are increased and the occurrence of lint is suppressed. The web forming process for forming a cross web is particularly called a cross lay.

  The interfiber bonding step is a step of bonding fibers arranged in the web forming step with an adhesive, applying heat to a part of the fibers to melt and bonding them, or entwining the fibers with a needle or high-pressure water flow to fix them. The interfiber bonding method is not particularly limited. For example, resin bonding, thermal bonding using a heat roll, needle punching using a needle, spunlace that makes a fabric entangled with fibers by striking with a very high pressure water stream, stitching A method of manufacturing by a manufacturing method such as bonding, powder bonding, or solvent bonding can be used. Among these, the spunlace is preferable from the viewpoint that fine fiber pieces that are the generation source of lint can be removed by a water flow.

[Impregnation process]
The impregnation step is a step of impregnating the cloth with a sterilizing solution. The method of impregnating the sterilizing solution is not particularly limited. For example, a cloth wound in a roll shape around a bottle container is used as a roll surface (refers to a circular surface). A method of impregnating the cloth by putting it in contact with the bottom of the container and introducing the sterilization liquid from the upper roll surface side of the roll wound up in a roll; the solvent in the sterilization liquid by impregnating the cloth with the sterilization liquid A method of partially distilling off by distillation or the like if necessary; impregnating a cloth with a disinfecting solution, partially distilling off the solvent in the disinfecting solution by distillation or the like, and then impregnating with water A method is mentioned. The solvent to be distilled off may remain in the wet wiper.

  More preferably, the sterilizing solution is uniformly impregnated on the entire surface of the fabric. “Uniformly impregnated into the fabric” means that the disinfecting solution is present on the fabric surface without being biased. Occurrence of local mold can be prevented by uniformly impregnating the cloth with the sterilizing solution.

[Use]
The wet wiper of this embodiment can be used for various wiping objects and objects to be wiped.

  The wiping target is not particularly limited, and examples thereof include blood, body fluids, bacteria, fungi (including molds), viruses, and other biological substances. The wet wiper according to the present embodiment can wipe off adherents such as blood and adhesives, and can suppress recontamination of the object to be wiped.

  The wiped material is not particularly limited. For example, instruments such as hospital door knobs, handrails, beds, operating tables, and monitor touch panels; ME equipment such as syringe pumps, infusion pumps, artificial dialysis devices, and ventilators ; Food factory belt conveyors, work tables, stainless steel containers, refrigerators, cooking utensils, and other work supplies; washbasins, toilet seats, furniture, and other housing supplies; care facility equipment; and human bodies.

  Among these, the wet wiper of this embodiment is preferably for medical use. “Medical” means, for example, hospital door knobs, handrails, beds, operating tables, monitor touch panels, etc .; ME equipment such as syringe pumps, infusion pumps, artificial dialysis devices, and ventilators; Used for appliances. In medical applications, extremely high cleanliness is required. The wet wiper of this embodiment can suppress the re-contamination of the surface of the object to be wiped by the fabric fibers after wiping.

  Hereinafter, although this embodiment is concretely demonstrated by an Example and a comparative example, this embodiment is not limited only to these Examples. The evaluation method and measurement method used in this embodiment are as follows.

<Measurement Method of Hydrophobic Fiber Abundance Ratio (Area%) on Fabric Surface>
The cross section of the fabric was photographed with a scanning electron microscope, and the areas of the hydrophobic fibers and the hydrophilic fibers reflected to a depth of 10 μm from the surface were analyzed by image analysis, and the area% of the hydrophobic fibers was calculated.
Area% of hydrophobic fiber = area of hydrophobic fiber / (area of hydrophobic fiber + area of hydrophilic fiber)

<Measurement method of fabric density>
The fabric weight per unit area (mass per 1 m ² (g)) was measured. Next, the thickness (mm) of the fabric was measured with a dial thickness gauge.
Fabric density (g / cm ³ ) = (weight per unit area / cloth thickness) / 1000

<Evaluation method of scraping performance>
A white enamel bat was coated with 0.5 mL of a 5% aqueous solution of bovine lyophilized blood in water and spread to 5 cm × 10 cm. Then, after drying at 25 degreeC for 6 hours, it wiped once with the wet wiper over the load of 16 g / cm < ² >. After wiping, the remaining wiping state of blood remaining on the enamel bat was visually confirmed and evaluated according to the following evaluation criteria.
(Evaluation criteria)
A: Little blood is left on the bat.
○: Slight blood remains on the bat.
Δ: Some blood left on the bat.
X: A lot of blood remains on the bat.

<Evaluation method of recontamination prevention performance>
A white enamel bat was coated with 0.5 mL of a 20% aqueous solution of bovine freeze-dried blood in water and spread to 5 cm × 10 cm. Then, after drying for 6 hours at 25 ° C., 5 reciprocating wipes were performed with a wet wiper under a load of 16 g / cm ² . After wiping, the remaining wiping state of blood remaining on the enamel bat was visually confirmed and evaluated according to the following evaluation criteria.
(Evaluation criteria)
A: Little blood is left on the bat.
○: Slight blood remains on the bat.
Δ: Some blood left on the bat.
X: A lot of blood remains on the bat.

<Preparation of disinfectant solution>
As an active ingredient, 1.5 parts by mass of a 50% by mass laurylbenzyldimethylammonium chloride aqueous solution and 98.5 parts by mass of purified water are put into a stainless steel container, stirred for 15 minutes at 300 rpm, and a 0.75% by mass sterilizing solution is obtained. Prepared.

[Example 1]
A web produced by sandwiching wood pulp (official moisture content: 8.5 (cotton)) with polyester (official moisture content: 0.4, tensile strength: 4.3 to 6.0 g / d) is a spunlace manufacturing method. The area percentage of the natural fibers on the surface of the nonwoven fabric (composition ratio: wood pulp / polyester = 40/60, basis weight 70 g / m ² ) produced by entanglement was measured. In addition, the nonwoven fabric was cut into a sheet having a width of 15 cm, and perforated every 18 cm in the length direction to form 90 rolls. The non-woven fabric wound up in a roll shape is placed so that the roll-shaped surface is in contact with the bottle container, and 2.5 times the amount of the sterilizing liquid is impregnated from the upper roll surface side with respect to the mass of the roll winding to wet. A wiper was produced.

  The bottle container was covered and allowed to stand for 14 days, and then the nonwoven fabric was taken out and evaluated for scraping performance and recontamination prevention performance.

[Example 2]
Nonwoven fabric (composition ratio wood pulp / (rayon / polyester) = 20 /) produced by entanglement of a web produced by sandwiching wood pulp with rayon (official moisture content: 11.0) and polyester blended fiber by a spunlace manufacturing method (40/40), basis weight 70 g / m ² ) A wet wiper was produced in the same manner as in Example 1 except that a roll was used, and evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.

[Example 3]
Nonwoven fabric (composition ratio: wood pulp / (polyethylene / polyester) = 22 / (39) produced by entanglement of a web made by blending wood pulp with polyethylene (official moisture content: 0) and polyester blended fiber by a spunlace manufacturing method / 39), weight per unit area 70 g / m ² ) A wet wiper was produced in the same manner as in Example 1 except that a roll was used, and evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.

[Example 4]
Nonwoven fabric (composition ratio wood pulp) produced by entanglement of web made by blending wood pulp with acrylic fiber (official moisture content: 2.0), blended fiber of polyethylene and polypropylene (official moisture content: 0) by the spunlace method / (Acryl / polyethylene / polypropylene) = 48 / (18/17/17), weight per unit area 35 g / m ² ) A wet wiper was produced in the same manner as in Example 1 except that a roll was used. The evaluation was conducted. The results are shown in Table 1.

[Example 5]
Non-woven fabric (composition ratio wood pulp / polyester) = 45/55, weight per unit area of 50 g / m ² ) produced by entanglement of a web produced by sandwiching wood pulp with polyester by a spunlace manufacturing method. A wet wiper was produced in the same manner as in Example 1 and evaluated in the same manner as in Example 1. The results are shown in Table 1.

[Example 6]
Nonwoven fabric produced by entanglement of a web prepared by sandwiching rayon with a blend of polyester and polyethylene by a spunlace manufacturing method (composition ratio rayon / (polyester / polyethylene) = 50 / (30/20), basis weight 50 g / m ² ) A wet wiper was produced in the same manner as in Example 1 except that a roll was used, and evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.

[Comparative Examples 1 and 2]
A web produced by mixing wood pulp fibers and polyester fibers in a mass ratio of 15:85 in advance (Comparative Example 1) and a web produced by using rayon fibers (Comparative Example 2) were produced by entanglement with a spunlace manufacturing method. A wet wiper was produced in the same manner as in Example 1 except that the nonwoven fabric roll was used, and evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.

[Comparative Example 3]
A wet wiper is produced in the same manner as in Example 1 except that a nonwoven roll produced by bonding a wood pulp fiber and a polyester fiber previously mixed at a mass ratio of 45:55 by thermal bonding is used. Evaluation was performed in the same manner as in Example 1. The results are shown in Table 1.

  The wet wiper of the present invention has industrial applicability in various uses for the purpose of cleaning, sterilizing and sterilizing various surfaces.

Claims (6)

A fabric and a sterilizing solution impregnated in the fabric,
The fabric includes hydrophilic fibers and hydrophobic fibers,
The content of the hydrophobic fiber is 20 to 80% by mass with respect to 100% by mass of the fabric,
30-100 area% of the hydrophobic fiber is present on the surface of the fabric,
The presence ratio (area%) of the hydrophobic fibers on the surface of the fabric and the content (mass%) of the hydrophobic fibers satisfy the following relationship:
Presence ratio (area%) of the hydrophobic fibers on the surface of the fabric> Content (mass%) of the hydrophobic fibers
Wet wiper.   The wet wiper according to claim 1, wherein the hydrophobic fiber includes polyester.   The wet wiper according to claim 1 or 2, wherein the hydrophilic fiber includes wood pulp.   The wet wiper according to any one of claims 1 to 3, wherein the hydrophobic fiber has a tensile strength of 2.5 to 7.5 g / d.   The wet wiper according to any one of claims 1 to 4, wherein the sterilizing solution contains a quaternary ammonium salt.   The wet wiper according to any one of claims 1 to 5, which is for medical use.