HK1104200A - Cleaning tool - Google Patents

Description

Cleaning tool

Technical Field

The present invention relates to an indoor cleaning tool having a fibrous base material, and more particularly to a cleaning tool capable of reducing the antigenicity of an allergy-causing substance.

Background

In recent years, people suffering from allergic diseases such as allergic rhinitis or bronchial asthma have been increasing sharply. The substances causing these allergic diseases are so-called allergens, and the total number thereof, which has been confirmed at present, has reached about 200. Typical examples thereof include mites, dead bodies of mites, hairs and pollen of pets, and the like, and these allergens cause various allergic symptoms by coming into contact with a human body in some form or entering the human body.

In this case, even if mites and the like causing allergy are killed by using a chemical or the like, the dead mites are antigenic, and thus the allergic diseases cannot be solved at all. Therefore, in order to alleviate the symptoms of allergic diseases or prevent new sensitization, it is necessary to completely remove allergens from living spaces or denature allergens to reduce the antigenicity (inertization) of substances causing allergy.

The agent for reducing the antigenicity of a substance causing the above-mentioned allergy has, for example, an allergen-inactivating agent formed by selecting at least one plant from the genus olives or the genus ash of the family meliaceae (see patent document 1).

As a chemical that can be sprayed or painted on a tatami, carpet, floor, or the like in the state of an aqueous solution, an allergen reducing agent comprising an aqueous solution containing aluminum sulfate and sodium sulfate as active ingredients is disclosed (see patent document 2).

Further, as a cleaning tool for removing dirt or dust by static electricity, a cleaning tool for holding static electricity and adsorbing dirt or dust by using an electret polyolefin ultrafine fiber nonwoven fabric has been disclosed (see patent document 3). Further, a cleaning wipe cloth is disclosed which increases the electrification caused by the cleaning wipe work and increases the amount of dirt or dust to be adsorbed by combining fibrous materials having different electrification trains (see patent document 4).

[ patent document 1 ] Japanese patent application laid-open No. 2003-55122

[ patent document 2 ] Japanese patent application laid-open No. 2003-334240

[ patent document 3 ] Japanese patent application laid-open No. 5-305049

[ patent document 4 ] Japanese patent application laid-open No. 2004-65731

In cleaning tools such as a wiper, a mop, and a scraper, which are used for removing dust or dirt in a room, the cleaning tools are kept in this state for a long time by attaching the cleaning allergen to the cleaning tool. Therefore, as described above, in order to alleviate the symptoms of an allergic disease or prevent the onset of a new allergic disease, it is necessary to reduce the antigenicity of the allergen held in the cleaning tool.

However, the medicines of patent documents 1 and 2 are used by directly spraying or applying the medicines to a place which may come into contact with a human body, such as a tatami, a carpet, a floor, or clothes. After the medicine is applied, the medicine needs to be wiped off or sucked off by a dust collector, which is troublesome. However, in the dust and dirt cleaning for cleaning floors and furniture, which are the most frequent daily cleaning, no method has been studied for easily removing substances causing allergy. In addition, the conventional method requires a drying time because the object is wetted. Further, there has been no study on how to reduce the antigenicity of an allergy-causing substance contained in dust or dust of a cleaning implement having a fibrous base material such as a mop.

In particular, among cleaning devices for indoor use, a cleaning device having a sheet-like or brush-like fibrous base material which is disposable or replaceable and which does not substantially contain water is commercially popular. In the case of such a cleaning tool, it is required that dust or soot can be adsorbed to an object to be cleaned without leaving a scratch, and that an antigenicity-reducing component be attached to or permeate through the surface of a fibrous base material.

In this regard, in patent documents 3 and 4, no studies have been made on cleaning tools that take into consideration the trapping properties of dust and dirt, the prevention of scratches, and the adhesion or permeability of the antigenicity-reducing component.

In view of the above problems, an object of the present invention is to provide a cleaning tool that does not cause scratches, dust, or dirt to adhere to an object to be cleaned, and that can reduce the antigenicity of an allergenic substance that adheres to the cleaning tool.

Disclosure of Invention

The present inventors have made extensive studies to solve the above problems, and as a result, have found a method for solving the above problems by using fibers having an electrostatic property on a fibrous base material of a cleaning tool and adding an antigenicity-reducing component to the fibrous base material, and have completed the present invention. More specifically, the present invention is as follows.

(1) A cleaning tool for indoor use having a charged fibrous base material having charging properties at least in a cleaning state, wherein an antigenicity-reducing component for reducing the antigenicity of an allergenic material is added to the charged fibrous base material.

According to the cleaning implement of the present invention, since the fibrous base material has an electrostatic charging property, dust or dirt can be captured without leaving a scratch. Therefore, the scratch-resistant coating can be used for television or glass products and other places where consumers do not want to leave scratches. Further, since the cleaning implement is added with the antigenicity-reducing component, it is possible to reduce the number of allergenic substances adhering to the cleaning implement. Moreover, the antigenicity-reducing component can be easily added to the fibrous base material, and when the amount of each component added is small, migration from the fibrous base material side to the cleaning target side during use can be prevented.

(2) The cleaning implement according to (1), wherein the chargeable fibrous base material is a fiber processed by electret.

According to this aspect, since the electrification by electret processing is used, the electrification can be semi-permanently maintained even without friction with the cleaning object. Therefore, dust or garbage can be adsorbed all the time, and the antigenicity of the substance causing allergy, which is dirt removed without leaving scratches, can be reduced. Further, since no charge is applied to the substance causing allergy, the substance causing allergy hardly drops off and can be easily held. Therefore, even a product in the middle of use can be stored with care.

(3) The cleaning implement according to (1), wherein the chargeable fibrous base material is a combination of two or more types of fibers having different charging rows.

According to this aspect, since fibers having different charge trains are combined, static electricity is generated by friction between the fibers, and thus no friction with the object to be cleaned is required, and static electricity can be easily generated. Further, even dust or dust charged to either positive or negative can be adsorbed, and substances causing allergy can be efficiently adsorbed.

(4) The cleaning implement according to any one of (1) to (3), wherein the fibrous material constituting the chargeable fibrous base material is a hydrophobic fiber.

According to this aspect, since the constituent fibers are hydrophobic fibers, the charged state can be maintained for a long time.

(5) The cleaning implement according to any one of (1) to (4), wherein the antigenicity-reducing component is added in a state of a solution in which the antigenicity-reducing component is dissolved.

According to this embodiment, the antigenicity-reducing component is added after being diluted in water, ethanol, or the like, and thus can be applied uniformly to the fibers. Therefore, the contact reaction with the substance causing allergy contained in the wiped dust or the like can be efficiently performed. In addition, a surfactant may be added to the fiber so as to be easily dissolved in the diluted solution, or an adhesive component such as an organic polymer may be added to the fiber so as to be easily fixed.

(6) The cleaning implement according to any one of (1) to (5), wherein the antigenicity-reducing component is a plant-derived component.

According to this embodiment, the antigenicity-reducing component used is derived from a plant, and therefore, is highly safe to the human body.

(7) The cleaning implement according to any one of (1) to (6), wherein the antigenicity-reducing component is a component obtained by extracting an extract of a plant belonging to the genus Burseraceae or the genus Ceriporia with water or an organic solvent.

According to this embodiment, since the extract of a plant belonging to the genus Burseraceae or the genus Ceriporia (hereinafter referred to as "olive extract") extracted with water or an organic solvent has a very good effect of reducing antigenicity, antigenicity can be reduced by adding a small amount of the extract. Further, since the conventional plant-derived antigenicity-reducing component itself has a color depending on the type, coloring of a fibrous base material when it is added thereto is a problem. However, the olive extract itself has a yellow to yellowish brown color, and when the olive extract is diluted and added to a fibrous substrate, the olive extract is almost colorless and transparent, and thus coloring of the substrate can be prevented.

(8) The cleaning implement according to any one of (1) to (7), wherein the antigenicity-reducing component is oleanolic acid.

In this embodiment, the oleanolic acid used is a phenolic iridoid glycoside, and is contained in many of the above-mentioned plants of the genus olive or the genus Ceriporia. The iridoid glycoside has formyl and hydroxy groups, which can have an antigenicity-reducing effect by binding to amino groups contained in the allergen protein.

(9) The cleaning tool according to (7) or (8), wherein the chargeable fibrous base material is white.

According to this aspect, the olive extract or oleanolic acid is low in coloring degree, and therefore, there is no problem of coloring the fibrous base material. Therefore, since the same white fibrous base material as in the conventional art can be used, the attached dirt or dust can be easily seen.

(10) The cleaning implement according to any one of (1) to (9), wherein the antigenicity-reducing component is added in an amount of 0.001% by mass or more and 10% by mass or less per 100% by mass of the charged fibrous base material.

According to this embodiment, a sufficient antigenicity-reducing effect can be obtained by adding 0.001% by mass or more of the antigenicity-reducing component to the entire fibrous base material, and the effect of the component can be exhibited by adding a trace amount of the antigenicity-reducing component. If the content exceeds 10% by mass, the antigenicity-reducing component will not have good stability over time.

According to the present invention, it is possible to provide a cleaning tool which reduces the antigenicity of an allergy-causing substance adhering to the cleaning tool and which does not leave scratches on the surface of an object after cleaning.

Drawings

Fig. 1 is a perspective view showing a cleaning tool according to an example of the present invention.

Fig. 2 is an exploded perspective view showing the fibrous base material in fig. 1.

Fig. 3 is an exploded perspective view showing a fibrous base material according to a second embodiment.

Fig. 4 is a perspective view showing another example of the cleaning tool of the present invention.

Fig. 5 is a perspective view showing another example of the cleaning tool of the present invention.

Detailed Description

The following describes embodiments of the present invention.

< antigenicity-reducing component >

The "antigenicity-reducing component" used in the present invention is a component that reduces the antigenicity of an allergy-causing substance and suppresses allergic symptoms, and is preferably a plant-derived component. Here, the substance (allergen) causing allergy is an inhalant allergen such as mites, house dust, animals, fungi (mold), insects, etc., or pollen of the genus taxus, gramineae, etc.

Specific examples of such an antigenicity-reducing component are not particularly limited, but examples thereof include extracts of the above-mentioned olive extract, ash tree extract, pomegranate, gutter, persimmon tree, tea, bamboo, perilla violet, mint, cypress, hiba arborvitae, eucalyptus, tea tree oil, and the like, and examples thereof include tannic acid, gallic acid, and the like. Further, there are also a polymer compound having a monovalent or higher phenol group such as p-polyvinylphenol in a branched chain of a cyclic unit of a linear polymer, a polymer compound having a monovalent phenol group such as a dihydroxybenzoic acid polymer in a cyclic unit, a polyoxyethylene chain and/or a divalent or higher benzenesulfonate salt of a vinyl chain such as disodium dodecyldiphenyloxide disulfonate (sodium lauryldiphenylsulfonate) in a molecule, and/or a divalent or higher sulfate salt having a polyoxyethylene chain and/or a vinyl chain in a molecule, ethanol having a terpene skeleton, a hydroxybenzoic acid such as 2, 5-dihydroxybenzoic acid, an aromatic hydroxy compound, a carbonate salt of an alkali metal, alum, a dodecylbenzenesulfonate salt, a dodecylsulfate salt, a polyoxyethylene dodecylether sulfate salt (polyoxyyethylene laurylether sulfate salt), phosphates, zinc sulfate, lead acetate, and the like.

Among the above, the antigenicity-reducing component is preferably formed from an olive extract. The "olive extract" in the present invention is formed by extracting an extract of a plant of the genus olive or the genus Cera with water or an organic solution. Further, the antigenicity-reducing component is preferably oleanolic acid. Oleuropein is an iridoid glycoside having a formyl group and a hydroxyl group thereon, which can reduce antigenicity by binding to an amino group contained in an allergen protein. Specifically, the olive extract described in patent document 1 can be used.

Furthermore, tannic acid binds to amino groups or peptide portions of allergen proteins via hydroxyl groups of polyphenol, thereby reducing antigenicity.

The antigenicity-reducing component can be added to a solution containing an active ingredient such as oleanolic acid and an extract thereof (hereinafter referred to as "antigenicity-reducing agent") in general. For example, the above olive extract is an example of an antigenicity-reducing agent, and other than oleanolic acid, it can be used as a solution containing ethanol and water.

The cleaning implement of the present invention may be added with various components other than the antigenicity-reducing component as described above, as long as the appearance is not significantly changed. This component may be added in admixture with the antigenicity-reducing agent or may be added to the cleaning implement alone without being added with the antigenicity-reducing agent. For example, an auxiliary agent may be added to the antigenicity-reducing agent in order to enhance the reaction of the antigenicity-reducing component. Examples of the auxiliary agent include hygroscopic compositions such as alkaline earth metal salts. Further, in order to facilitate adhesion of the antigenicity-reducing component to the fibrous base material, an oil-adding agent, a surfactant, or the like may be added.

< cleaning implement >

First embodiment (static electricity generating type)

The cleaning implement to which the antigenicity-reducing component is added will be described below. The static electricity generating type cleaning tool is a cleaning tool for indoor use having a fibrous base material containing substantially no moisture, and is not particularly limited as long as the static electricity generating type cleaning tool generates static electricity by friction with a cleaning surface or friction between fibers.

The fibers used in the cleaning tool may be any fibers conventionally used for nonwoven fabrics and clothing, but chemical fibers are preferred. As the chemical fiber, polyethylene terephthalate, polyethylene, polypropylene, polyvinyl chloride, polytetrafluoroethylene, polystyrene, nylon, or the like can be used. The natural fiber may be wool or the like.

Further, the fibers may be used in combination. When the composite fiber is used, a fiber having a negative charge property and a fiber having a positive charge property may be alternately arranged. Thus, by using the bipolar fiber, dust and dirt can be adsorbed regardless of their polarities. Furthermore, even if there is no friction with the cleaning surface, static electricity can be efficiently generated by the friction generated between the fibers.

In order to efficiently generate and hold static electricity, it is preferable to make the fibers hydrophobic as much as possible.

The nonwoven fabric is preferably a spunbond nonwoven fabric, a meltblown nonwoven fabric, a spunlace nonwoven fabric, or the like.

< example of cleaning implement >

Fig. 1 and 2 show an example of such a cleaning tool. Fig. 1 is a perspective view showing a cleaning tool, and fig. 2 is an exploded perspective view showing the cleaning sheet in fig. 1. As shown in fig. 1, the cleaning tool 10 is so-called portable, and is composed of a cleaning sheet 11 corresponding to the fibrous base material of the present invention and a holder 12. The holder 12 can be replaced as appropriate, and for example, the cleaning tool shown in fig. 1 can be used even in a high place or a narrow place where the hand is not sufficient by attaching the holder 22 shown in fig. 4.

As shown in fig. 2, the cleaning implement 11 is laminated in this order from above, i.e., a holding sheet 1 formed of a nonwoven fabric and formed into a plurality of rectangular pieces, a base sheet 2 similarly formed of a nonwoven fabric and formed into a plurality of rectangular pieces, a first fiber bundle 3a formed of a tow fiber bundle (tow fiber), a second fiber bundle 3b formed of a tow fiber bundle, a third fiber bundle 3c formed of a tow fiber bundle, a fourth fiber bundle 3d formed of a tow fiber bundle, and a rectangular piece 5 formed into a plurality of rectangular pieces. In this embodiment, the first fiber bundle 3a, the second fiber bundle 3b, the third fiber bundle 3c, and the fourth fiber bundle 3d constitute a brush portion of the present invention. Therefore, cleaning can be performed more efficiently by the brush portion. Further, since only the antigenicity-reducing component need be added to the brush portion, the antigenicity-reducing component can be added more effectively. Here, the "brush portion" is a portion that mainly exerts a cleaning function in the cleaning implement of the present invention, and may be a part of the fibrous base material or the entire base material. In each layer, the holding sheet 1, the base sheet 2, the first fiber bundle 3a, the second fiber bundle 3b, the third fiber bundle 3c, the fourth fiber bundle 3d, and the rectangular sheet 5 are joined at the joining line 6 of all layers, and only the holding sheet 1, the base sheet 2, the first fiber bundle 3a, and the second fiber bundle 3b are joined at the joining line 7. Thus, a holding space 13 is formed between the holding sheet 1 and the base material sheet 2, and the holder 12 can be inserted and attached. In such portable cleaning devices 10 and 20, it is preferable that the antigenicity-reducing component is added only to the brush portion composed of the first fiber bundle 3a, the second fiber bundle 3b, the third fiber bundle 3c, and the fourth fiber bundle 3 d.

< other examples of cleaning implement >

Fig. 5 shows a floor-standing cleaning tool 30 suitable for cleaning a floor as another example of the cleaning tool. As shown in fig. 5, in the cleaning tool 30, a cleaning sheet 31 corresponding to the fibrous base material of the present invention is wound around the distal end portion 32a of the holder 32. Further, the convex portions 33 formed of fiber bundles are formed on the front and back surfaces of the cleaning sheet 31, and thus, it is possible to easily clean a place such as a groove portion, which is not easily cleaned by a flat cleaning sheet. The cleaning tool 30 can capture dust and the like by electrostatic force as long as it contacts the floor or the like. In such a floor-standing cleaning tool 30, it is preferable that the antigenicity-reducing component be added to the entire cleaning sheet 31.

< method for adding antigenicity-reducing component >

As a method of adding the antigenicity-reducing component to the cleaning tool, there is a method of adding the antigenicity-reducing component to the fibrous base material by a spraying method, a roll coating method, a dipping method, or the like, but the method is not limited to this. When the antigenicity-reducing component is added, the antigenicity-reducing component can be added as a diluted solution of the antigenicity-reducing component by diluting the antigenicity-reducing component in water or an organic solvent in a trace amount. Therefore, the solvent of the diluted antigenicity-reducing component solution is volatilized after addition, and as a result, a cleaning implement to which the antigenicity-reducing component is added can be manufactured.

The antigenicity-reducing component is preferably added in an amount of 0.001% by mass or more and 10% by mass or less of the antigenicity-reducing component throughout the fibrous base material. More preferably, the antigenicity-reducing component is 0.002 mass% or more and 1 mass% or less.

If the antigenicity-reducing component is less than 0.001 mass%, the antigenicity-reducing ratio to captured dust is insufficient, such being undesirable, and if it exceeds 10 mass%, the antigenicity-reducing component is not stable over time and is more expensive, such being undesirable.

Second embodiment (electret processed type)

The electret-processed cleaning tool can be produced by converting a fibrous base material, which is a nonwoven fabric cut into rectangular pieces by superposition, into an electret. Fig. 3 is an exploded perspective view of a cleaning sheet according to a second embodiment. As shown in fig. 3, the cleaning sheet 15 is laminated in this order from above, i.e., a holding sheet 1 formed of a nonwoven fabric and forming a plurality of rectangular sheets, a base sheet 2 similarly formed of a nonwoven fabric and forming a plurality of rectangular sheets, and a first fiber bundle 16a, a second fiber bundle 16b, a third fiber bundle 16c, and a fourth fiber bundle 16d similarly formed of a nonwoven fabric and forming a plurality of rectangular sheets.

The fibers used in the nonwoven fabric are preferably olefin-based fibers, and particularly polypropylene. The diameter of the fiber is preferably very small, and more preferably 0.1 μm or more and 10 μm or less.

The nonwoven fabric is preferably a meltblown nonwoven fabric or a spunbonded nonwoven fabric, and the basis weight is preferably 10g/m2 or more and 100g/m2 or less.

The electret treatment can be carried out after the production of a long fiber, a nonwoven fabric or a cleaning tool, and a conventionally known method can be used. Examples of the method of applying an electric charge include a method of polarizing a sample by a dc high voltage, a method of applying a dc high voltage to a needle electrode to generate ions in the air and applying the ions to a fiber, and a method of applying an electric charge to a fiber by a pulse discharge.

Examples

The present invention will be described in more detail below with reference to examples and comparative examples, but the present invention is not limited to the following examples.

< production of an antigenicity-reducing agent containing an antigenicity-reducing component >

(Olive extract)

The composition of example 3 of patent document 1 was extracted with water (a filtered liquid obtained by putting 20g of fresh leaves of olive in 100g of water, crushing the leaves with a stirrer and filtering the crushed leaves with filter paper), and then ethanol was added thereto to prepare a 0.6% oleanolic acid-containing liquid.

(tannic acid)

Tannic acid (and light pure pharmaceutical) was dissolved in water and ethanol to prepare a 15% tannic acid solution.

< preparation of a diluted solution of an antigenicity-reducing component >

The above-mentioned two antigenicity-reducing agents were mixed and stirred at the blending ratio shown in Table 1, to prepare dilutions of the antigenicity-reducing component of production examples 1 to 3. The case where only water was used was defined as production example 4.

TABLE 1

Blending amount (unit: mass%) of dilution of antigenicity-reducing component

Name (R)	Test material	Antigenicity-reducing component	Water (W)
				Additive-free solution of antigenicity-reducing component	Production example 4	-	100
Tannin composition	Production example 1	1	99
				Production example 2	10	90
	Olive picrasin composition	Production example 3	10				90

< addition of antigenicity-reducing component to cleaning implement >

Hereinafter, the antigenicity-reducing component diluted solutions of production examples 1 to 3 and the antigenicity-reducing additive-free solutions of production example 4 were added to the cleaning tool shown in fig. 1 (hereinafter, referred to as a "portable type") and the cleaning tool shown in fig. 5 (hereinafter, referred to as a "floor type") by means of a sprayer. The cleaning tool is an electrostatic generating type cleaning tool. First, three fiber bundles composed of side-row fibers of polyethylene polypropylene and one fiber bundle composed of nylon fibers were superposed to produce a fiber bundle (fiber bundles 3a, 3b, 3c, and 3d in fig. 2). The cleaning implement was manufactured by bonding the fiber bundle to a nonwoven fabric (rectangular sheet 5 in fig. 2) composed of side-aligned fibers of polyethylene and polypropylene. Cleaning tools of examples 1 to 3 (components of additional production examples 1 to 3) and comparative example 1 (component of additional production example 4) were obtained for the portable type and the floor type, respectively.

Further, a dilution of the antigenicity-reducing component was added to the entire fibrous base material (sheet 11 in fig. 1) in an amount of 5 mass% by hand. In addition, in the floor model, 7.5 mass% of the antigenicity-reducing component diluted solution was added to the entire fibrous base material (sheet 31 in fig. 5).

Test examples

Test example 1: evaluation of the Properties against reduction of immunogenicity

The cleaning devices of examples 1, 2 and 3 and comparative example 1 were evaluated for the reduction in antigenicity of cedar pollen and dust mites in the following procedure. The results are summarized in tables 2 and 3. The "reduction rate" in the table is a value obtained by 100 × (the amount of allergen by the ELISA (enzyme-linked immunosorbent assay) method for a cleaning device to which an antigenicity-reducing agent is added)/(the amount of allergen by the ELISA method for a cleaning device to which an antigenicity-reducing agent is not added), and the symbols in the table indicate the following reduction rates.

Good reduction of O … by 50% or more than 50%

The poor reduction rate of delta … is 10-50%

The differential reduction rate of x … is 0-10%

Portable: garbage containing about 0.05g of mite allergen (dust mite) and about 0.01g of cedar pollen were put into glass bottles 9cm in diameter and 17cm in height, respectively, and then the inner walls of the bottles were covered with lids to disperse the garbage and pollen. Then, the cap was opened, and the garbage and the cedar pollen in the bottle were cleaned with a hand-held cleaning tool. The cleaning tool was used to extract allergens from the cleaning tool, and the allergens were quantitatively measured by ELISA.

Floor type: garbage containing about 0.05g of mite allergen (dust mites) and about 0.01g of cedar pollen were scattered on a floor of 30X 30 cm. The garbage and the cedar pollen are cleaned by a floor-type cleaning tool. The cleaning tool was used to extract allergens from the cleaning tool, and the allergens were quantitatively measured by ELISA.

In addition, a phosphate buffer (pH7) was used as an extract. The ELISA method (enzyme-linked immunosorbent assay) is one of methods for quantifying a substance by enzyme color development in an antigen-antibody reaction (EIA method), and is a sandwich method for quantifying a substance to be detected by two kinds of antibodies.

TABLE 2

Reduced allergenicity of cedar pollen

Test material	Rate of decrease
			Portable handheld device	Floor type
	Comparative example 1	×			×
Example 1			△	△
	Example 2	○			○
Example 3			○	○

TABLE 3

Reduced allergenicity of mites

Test material	Rate of decrease
			Portable handheld device	Floor type
	Comparative example 1	×			×
Example 1			×	△
	Example 2	○			○
Example 3			○	○

From the results shown in tables 2 and 3, it was confirmed that the floor-standing cleaning appliance had a reducing effect in any of the antigenicity-reducing components. In addition, the portable cleaning device of example 1 had a small amount of the antigenicity-reducing component added, and the effect was not sufficiently pronounced.

Test example 2: evaluation of Effect of lowering after heating and light irradiation

Heating test: the hand-held cleaning device was packaged by storing only the fibrous base material of the cleaning device of examples 2 and 3 in a paper container, and the floor-standing cleaning device was pillow-packaged with a film. The packages were placed in a shady place, a 40 ℃ thermostat, and a 50 ℃ thermostat, respectively, in a room. The allergen immediately after leaving the test piece and after leaving it for one month was measured in the same manner as in test example 1.

Light irradiation test: the sheet was directly placed without packaging the fibrous base material of the hand-held or floor-standing cleaning implement. The xenon lamp weather meter was irradiated with sunlight for one month or six months, and the allergen was measured in the same manner as in test example 1.

The results are shown in FIG. 4. The reduction ratios and signs in the tables have the same meanings as in tables 2 and 3. It was confirmed that the cleaning implements of examples 2 and 3 maintained the reduction effect even after being left for one month under warm-up and also maintained the reduction effect even after being irradiated with sunlight.

TABLE 4

Mite allergen reduction rate

		Example 2		Example 3
						Condition	Aging	Portable handheld device	Floor type	Portable handheld device	Floor type
Just after attachment	Day 0	○	○	○	○
						RT	One month	○	○	○	○
40℃	One month	○	○	○	○
						50℃	One month	○	○	○	○
Irradiating light	Equivalent to one month	○	○	○	○
						Irradiating light	Equivalent to six months	○	-	○	-

The present invention can be suitably used as a cleaning tool for indoor use having a fibrous base material.

Claims (11)

1. A cleaning tool for indoor use having a chargeable fibrous base material having a charging property at least in a cleaning state, characterized in that an antigenicity-reducing component for reducing the antigenicity of an allergenic substance is added to the chargeable fibrous base material.

2. The cleaning implement according to claim 1, wherein said chargeable fibrous base material is a fiber processed by electret.

3. The cleaning implement according to claim 1, wherein said chargeable fibrous base material is a combination of two or more different charged rows of fibers.

4. The cleaning implement according to any one of claims 1 to 3, wherein the fibrous material constituting the chargeable fibrous base material is a hydrophobic fiber.

5. The cleaning implement according to any one of claims 1 to 3, wherein the antigenicity-reducing component is added in the state of a solution in which the antigenicity-reducing component is dissolved.

6. The cleaning implement according to any one of claims 1 to 3, wherein the antigenicity-reducing component is a plant-derived component.

7. The cleaning implement according to any one of claims 1 to 3, wherein the antigenicity-reducing component is formed by extracting an extract of a plant belonging to the genus Olive or the genus Cera with water or an organic solvent.

8. The cleaning implement according to any one of claims 1 to 3, wherein said antigenicity-reducing component is oleanolic acid.

9. The cleaning implement according to claim 7, wherein said chargeable fibrous base material is white.

10. The cleaning implement according to claim 8, wherein said chargeable fibrous base material is white.

11. The cleaning implement according to any one of claims 1 to 3, wherein the antigenicity-reducing component is added in an amount of 0.001 mass% or more and 10 mass% or less per 100 mass% of the charged fibrous base material.