Combination of car washing sheets and car washing method

Abstract

To provide a combination of car washing sheets capable of suppressing generation of unevenness of gloss of an exterior of a vehicle.SOLUTION: The combination of the car washing sheet is composed of a cleaning sheet 10 for cleaning the exterior of a vehicle and a finishing sheet 20. In the cleaning sheet 10, a first nonwoven fabric sheet 11 containing fibers which are easily positively charged is used as a base material, and the first nonwoven fabric sheet 11 is impregnated with a cleaning component 12 containing a gloss component 13 and a polar solvent 14. The finishing sheet 20 is composed of a second nonwoven fabric sheet 21 containing fibers having a young's modulus of 1 to 10GPa and having a basis weight of 50 to 200g / m2.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The technical field of this specification relates to a combination of car wash sheets, which is a set of a cleaning sheet and a finishing sheet for cleaning the exterior of a vehicle, and a car washing method using the same. [Background technology]

[0002] BACKGROUND ART Patent Document 1 describes a cleaning sheet for automobiles, in which a base fabric is impregnated with a polishing agent, as a cleaning sheet for cleaning the exterior of a vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-246262 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the car cleaning sheet described in Patent Document 1 had the problem that when wiping the exterior of a vehicle with the cleaning sheet, dust adhering to the exterior is dragged along, and uneven application of the polishing agent can easily cause uneven gloss on the exterior of the vehicle after cleaning.

[0005] The technology of this specification has been made in consideration of the above points, and aims to provide a combination of car wash sheets that can suppress uneven gloss on the exterior of a vehicle. [Means for solving the problem]

[0006] The car wash sheet combination according to the embodiment of the present specification includes a cleaning sheet including a first nonwoven fabric sheet containing fibers that are easily positively charged, a cleaning component that is impregnated into the first nonwoven fabric sheet and contains a gloss component and a polar solvent, Contains fibers with a Young's modulus of 1 to 10 GPa and a basis weight of 50 to 200 g / m 2A finishing sheet consisting of a second nonwoven fabric sheet, It is characterized by being a complete set of

[0007] According to the combination of car wash sheets according to the embodiments of the present specification, when the exterior of a vehicle is wiped with the cleaning sheet, the gloss component is spread over the exterior, and the polar solvent absorbs dust adhering to the exterior. When the polar solvent volatilizes, the dust is absorbed by the first nonwoven fabric sheet containing fibers that are easily positively charged, thereby preventing the exterior from being damaged by the dust being dragged along. When the exterior is wiped with the finishing sheet, the basis weight of the second nonwoven fabric sheet constituting the finishing sheet is 50 to 200 g / m 2 The wiping force is adequately distributed by this, and the Young's modulus of the fibers contained in the second nonwoven fabric sheet is 1 to 10 GPa, so that the gloss component applied to the exterior can be spread evenly and excess gloss component can be scraped off. In other words, by combining the car wash sheets according to the embodiment, it is possible to prevent uneven gloss from occurring on the exterior of the vehicle.

[0008] In the above combination of car wash sheets, the second nonwoven fabric sheet may be impregnated with a finishing component containing a volatile solvent.

[0009] According to this, when the exterior is wiped with the finishing sheet, the finishing component containing the volatile solvent makes the finishing sheet slippery, and the gloss component spread on the exterior can be spread more evenly.

[0010] In the above combination of car wash sheets, the fibers that are easily positively charged may be rayon fibers.

[0011] According to this, since the first nonwoven fabric sheet is made of rayon fiber, when the cleaning sheet is used to clean the exterior of a vehicle and the polar solvent evaporates, dust is suitably absorbed into the cleaning sheet, and damage to the exterior caused by the dust being dragged along is suitably prevented.

[0012] In the above combination of car wash sheets, the fiber having a Young's modulus of 1 to 10 GPa may be cotton.

[0013] This allows the gloss component to be spread evenly on the exterior, and also makes it possible to scrape off any excess gloss component.

[0014] In the above-described combination of the car wash sheet, the polar solvent may be a mixture of alcohol and water.

[0015] This allows oil components adhering to the exterior of a vehicle to be removed when the exterior is wiped with the cleaning sheet.

[0016] Here, the car washing method according to the embodiment is characterized by having a washing process in which the exterior of the vehicle is wiped and washed using the above-mentioned washing sheet without washing with water, and a finishing process in which the washed exterior is wiped and finished using the above-mentioned finishing sheet.

[0017] According to this, the cleaning sheet spreads the gloss component on the exterior and absorbs dust during the cleaning process without using water. This prevents the exterior from being damaged by dragged dust. Furthermore, the finishing process allows the finishing sheet to spread the gloss component evenly and scrape off excess gloss component. In other words, the car washing method of the embodiment can prevent uneven gloss from occurring on the vehicle's exterior. [Effects of the Invention]

[0018] By combining the car wash sheets according to the embodiments of the present specification, it is possible to suppress unevenness in the gloss of the exterior of the vehicle. [Brief explanation of the drawings]

[0019] [Figure 1]1A and 1B are conceptual diagrams illustrating the process of washing a vehicle using a combination of car wash sheets according to an embodiment, in which (A) is a conceptual diagram illustrating the process of wiping and cleaning the exterior of a vehicle using a cleaning sheet, and (B) is a conceptual diagram illustrating the process of finishing the exterior of a vehicle that has been washed using a finishing sheet. DETAILED DESCRIPTION OF THE INVENTION

[0020] The following describes a combination of car wash sheets according to an embodiment of the present specification and a car wash method using the same. Note that the scope of the present invention is not limited to the scope disclosed in the embodiment. The car wash sheet combination of the embodiment is composed of a set (combination) of a cleaning sheet 10 for cleaning the exterior of a vehicle and a finishing sheet 20.

[0021] The cleaning sheet 10 has as its base a first nonwoven fabric sheet 11 containing fibers that are easily positively charged, and the first nonwoven fabric sheet 11 is impregnated with a cleaning component 12 containing a gloss component 13 and a polar solvent 14.

[0022] The finishing sheet 20 contains fibers with a Young's modulus of 1 to 10 GPa and a basis weight of 50 to 200 g / m 2 The second nonwoven fabric sheet 21 is made of

[0023] When the cleaning sheet 10 is used to wipe the exterior E of a vehicle, the gloss component 13 is spread over the exterior E, and the polar solvent 14 absorbs the dust D adhering to the exterior E. When the polar solvent 14 volatilizes, the first nonwoven fabric sheet 11 absorbs the dust D, thereby preventing the exterior from being damaged by the dust being dragged along.

[0024] After wiping the exterior E of the vehicle with the cleaning sheet 10, when wiping the exterior E with the finishing sheet 20, the basis weight is 50 to 200 g / m 2The second nonwoven fabric sheet 21 having a Young's modulus of 1 to 10 GPa distributes the wiping force appropriately, and the fibers contained in the second nonwoven fabric sheet 21 have a Young's modulus of 1 to 10 GPa, which allow the gloss component 13 applied to the exterior E to be spread evenly while scraping off any excess gloss component 13. Therefore, the combination of the car wash sheet of the embodiment can prevent the gloss component 13 from causing uneven gloss on the exterior E. Furthermore, the second nonwoven fabric sheet 21 can be impregnated with a finishing component 22 containing a volatile solvent 24.

[0025] The combination of car wash sheets according to the embodiment can be applied to vehicles such as motorcycles, railroad cars, and aircraft, as well as automobiles. In this specification, the amounts and ratios of the combinations of car wash sheets are expressed in units of mass, unless otherwise specified, and are expressed in a wet state including volatile components. Furthermore, the "%" representing the unit of composition means "% by mass" unless otherwise specified.

[0026] The exterior E of a vehicle that is washed with a combination of car wash sheets may be a painted surface, a resin surface, or a metal surface, depending on the material. A painted surface is a surface such as a steel plate or a resin material coated with a synthetic resin paint. A resin surface is a surface made of a synthetic resin molded body formed from a synthetic resin and optionally a filler, or a surface made of fiber-reinforced plastic (FRP). A metal surface is a surface made of aluminum (including aluminum that has been subjected to a surface oxidation treatment such as anodizing), copper, or the like. The exterior E of a vehicle that is washed with a combination of car wash sheets is not particularly limited by the material, but is particularly suitable for painted surfaces and resin surfaces whose surfaces are made of synthetic resin.

[0027] A vehicle (exterior E) is charged with positive static electricity, and therefore dust D, which is charged with negative static electricity, adheres to the exterior E of the vehicle.

[0028] The cleaning sheet 10 has as its base a first nonwoven fabric sheet 11 containing fibers that are easily positively charged, and the first nonwoven fabric sheet 11 is impregnated with a cleaning component 12 containing a glossing component 13 and a polar solvent 14.

[0029] Polar solvent 14 is a solvent with an electron imbalance within its molecule. Because of this electron imbalance within its molecule, polar solvent 14 can absorb negatively charged dust D. Because polar solvent 14 is contained in cleaning component 12, when the exterior E of a vehicle is wiped with cleaning sheet 10, polar solvent 14 of cleaning component 12 contained in cleaning sheet 10 absorbs and covers the dust D, thereby preventing the exterior E from being damaged by the dust D when the exterior E is wiped with cleaning sheet 10.

[0030] The polar solvent 14 may have an SP value (solubility parameter) of 12 or greater. This is because the polar solvent 14 can effectively absorb dust D. Examples of polar solvents 14 with an SP value of 12 or greater include acetic acid (12.6), ethanol (12.7), formic acid (13.5), ethylene glycol (14.2), phenol (14.5), methanol (14.5), water (23.4), and mixtures thereof. The values ​​in parentheses indicate the SP value. In another embodiment, the polar solvent 14 may be ethanol, water, or mixtures thereof, which have little effect on the human body. By including ethanol in the polar solvent 14, oil components adhering to the exterior E of a vehicle can be dissolved and removed when the cleaning sheet 10 is used to wipe the exterior E.

[0031] The gloss component 13 is a component that coats the exterior E of the vehicle and imparts gloss to the exterior E. As the gloss component 13, a synthetic resin emulsion, a wax emulsion, a silicone oligomer, a silane coupling agent, a silicone oil emulsion, a silicone resin emulsion, or the like can be used.

[0032] A synthetic resin emulsion is a dispersion of synthetic resin particles emulsified in water or a water-containing solvent, and the synthetic resin particles form a coating on the exterior E, thereby imparting gloss to the exterior E. Commercially available synthetic resin emulsions can be used, and examples of commercially available products that can be used include the Polytron series, Duranate series (manufactured by Asahi Kasei Corporation), Movinyl series (manufactured by Japan Coating Resins Co., Ltd.), Acronal series (manufactured by BASF Ltd.), Pegal series (manufactured by High Pressure Gas Industrial Co., Ltd.), Tomac series (manufactured by E-Tech Co., Ltd.), Lipotex series (manufactured by Lion Specialty Chemicals Co., Ltd.), and Boncoat series (manufactured by DIC Corporation).

[0033] A wax emulsion is a dispersion of wax particles emulsified in water or a water-containing solvent, and the wax particles coat the exterior E, thereby imparting gloss to the exterior E. Commercially available wax emulsions can be used, such as the EMUSTAR series (manufactured by Nippon Seiro Co., Ltd.) and the AQUACER series (manufactured by BYK Japan Ltd.).

[0034] Silicone oligomer is a low molecular weight resin with a Si-O-Si siloxane bond as its main skeleton, and when the silicone oligomer is coated on the exterior E, it forms a siloxane bond coating that imparts gloss to the exterior E. Commercially available silicone oligomers can be used, such as the DOWSIL series (manufactured by Dow-Toray Industries, Inc.) and KR-500 (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0035] The silane coupling agent is an alkoxysilane having an organic functional group and an alkoxy group in the molecule, and the silane coupling agent forms a coating of siloxane bonds on the exterior E, thereby imparting gloss to the exterior E. The organic functional group of the silane coupling agent can be a vinyl group, an epoxy group, or an amino group, which provides the silane coupling agent with excellent solubility and stability in the polar solvent 14 and excellent adhesion to the exterior E. Examples of silane coupling agents that have excellent solubility and stability in polar solvent 14 and excellent adhesion to exterior coating E include vinyltrimethoxysilane, vinyltriethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, N-2-(aminoethyl)-3-aminopropylmethyldimethoxysilane, N-2-(aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-triethoxysilyl-N-(1,3-dimethyl-butylidene)propylamine, and N-phenyl-3-aminopropyltrimethoxysilane.

[0036] Silicone oil emulsions are silicone oil particles emulsified and dispersed in water or a water-containing solvent, and the silicone oil particles coat the exterior E, imparting gloss to the exterior E. Commercially available silicone oil emulsions can be used, such as the X-52 series (manufactured by Shin-Etsu Chemical Co., Ltd.) and the CoatOSil series (manufactured by Momentive Performance Materials Japan LLC). Commercially available modified silicone oil emulsions include the KP series, NP series (manufactured by Wacker Asahi Kasei Silicone Co., Ltd.), and POLON series (manufactured by Shin-Etsu Chemical Co., Ltd.).

[0037] Silicone resin emulsion is a dispersion of silicone resin particles emulsified in water or a water-containing solvent, and the silicone resin particles form a coating on the exterior E, thereby imparting gloss to the exterior E. Commercially available silicone resin emulsions can be used, such as the X-52 series (manufactured by Shin-Etsu Chemical Co., Ltd.) and the SILRES series (manufactured by Wacker Asahi Kasei Silicones Co., Ltd.).

[0038] The first nonwoven fabric sheet 11 is a nonwoven fabric containing fibers that are easily positively charged. Because the first nonwoven fabric sheet 11 contains fibers that are easily positively charged, when the polar solvent 14 volatilizes, the first nonwoven fabric sheet 11 can absorb dust D adhering to the exterior E or dust D absorbed by the polar solvent 14. This prevents the exterior E from being damaged by dust D when the exterior E is cleaned with the cleaning sheet 10. Examples of fibers that are easily positively charged include recycled fibers (rayon fibers, cupro fibers), nylon fibers ("nylon" is a registered trademark of DuPont for "polyamide"), and wool. In another embodiment, the fibers that are easily positively charged can be recycled rayon fibers. The first nonwoven fabric sheet 11 is sufficient as long as it contains these fibers that are easily positively charged, and may also contain fibers that are not easily charged. Examples of fibers that are not easily charged include acetate fibers, linen, cotton, and silk.

[0039] The first nonwoven fabric sheet 11 can be produced by, for example, entangling a sheet-like web made of randomly accumulated fibers that are easily positively charged and, if necessary, fibers that are not easily charged, using a high-pressure water jet (spunlace method).

[0040] By impregnating the first nonwoven fabric sheet 11 with the cleaning component 12, which is a mixture of the gloss component 13 and the polar solvent 14, the cleaning sheet 10 can be made into a combination car wash sheet according to the embodiment.

[0041] The finishing sheet 20 contains fibers with a Young's modulus of 1 to 10 GPa and a basis weight of 50 to 200 g / m2 The second nonwoven fabric sheet 21 may contain a finishing component 22 containing a volatile solvent 24.

[0042] The finishing component 22 contains a volatile solvent 24, which improves the slipperiness of the second nonwoven fabric sheet 21 when the finishing sheet 20 is used to wipe the exterior E, allowing the gloss component 13 of the cleaning sheet 10 to be more evenly spread over the exterior E. Water can be used as the volatile solvent 24, and a volatile solvent such as ethanol, methanol, or acetone can be added to the water to increase volatility.

[0043] In addition to the volatile solvent 24, the finishing component 22 may also contain the gloss component 13 used in the cleaning sheet 10.

[0044] The second nonwoven fabric sheet 21 contains fibers with a Young's modulus of 1 to 10 GPa. This is because the second nonwoven fabric sheet 21 can smoothly spread the gloss component 13 that has been spread on the exterior by the cleaning sheet 10, and can also scrape off any excess gloss component 13. The Young's modulus (GPa) of the main fibers is shown in Table 1.

[0045] [Table 1]

[0046] If the Young's modulus of the fibers contained in the second nonwoven fabric sheet 21 is less than 1 GPa, the fibers may be too soft to spread the gloss component 13 evenly and may not be able to scrape off excess gloss component 13. On the other hand, if the Young's modulus of the fibers exceeds 10 GPa, the fibers may be too hard to scrape off more of the gloss component 13 spread on the exterior packaging E than necessary, reducing the gloss of the exterior packaging E. In another embodiment, the Young's modulus of the fibers contained in the second nonwoven fabric sheet 21 may be 2 to 9.5 GPa, and in yet another embodiment, 5 to 9.5 GPa.

[0047] The basis weight of the second nonwoven fabric sheet 21 is 50 to 200 g / m 2 The basis weight is 50 to 200 g / m 2 This is because when wiping an exterior on which the gloss component 13 has been spread, using the finishing sheet 20 made of the second nonwoven fabric sheet 21 having a basis weight of 50 g / m, the wiping force is adequately distributed, allowing the gloss component 13 to be spread evenly. 2 If the weight is less than 200 g / m, the wiping force may not be adequately dispersed, and the gloss component 13 may not be uniformly spread. 2 If the weight exceeds this range, the gloss component 13 can be evenly spread, but the weight will be excessive and may be uneconomical. In another embodiment, the weight of the second nonwoven fabric sheet 21 is 60 to 150 g / m 2 In another embodiment, the thickness is 70 to 100 g / m 2 It can be said that:

[0048] The second nonwoven fabric sheet 21 is made of randomly accumulated fibers having a Young's modulus of 1 to 10 GPa and has a basis weight of 50 to 200 g / m 2 The resulting sheet-like web can be entangled, for example, by a high-pressure water jet (spunlace method).

[0049] The finishing sheet 20 of the embodiment can be obtained by impregnating the second nonwoven fabric sheet 21 with the finishing component 22 containing the volatile solvent 24.

[0050] The car wash sheet combination of this embodiment is configured with a set of a cleaning sheet 10 and a finishing sheet 20. By wiping the exterior E of a vehicle with the cleaning sheet 10 (cleaning step), the gloss component 13 is spread over the exterior E, and the polar solvent 14 absorbs dust D adhering to the exterior E. When the polar solvent 14 volatilizes, the first nonwoven fabric sheet 11 absorbs the dust D, preventing the exterior E from being damaged by the dragging of the dust. Of course, the cleaning step can be completed before the polar solvent 14 volatilizes. Subsequently, in the step of wiping the exterior E with the finishing sheet 20 (finishing step), the first nonwoven fabric sheet 11 absorbs the dust D, preventing the exterior E from being damaged by the dragging of the dust. Of course, the cleaning step can be completed before the polar solvent 14 volatilizes.2 The second nonwoven fabric sheet 21 having a Young's modulus of 1 to 10 GPa contains fibers that allow the gloss component 13 applied to the exterior E to be spread evenly and also scrapes off excess gloss component 13. Therefore, by combining the car wash sheet with the second nonwoven fabric sheet 21, the occurrence of uneven gloss can be suppressed and the exterior E of the vehicle can have a high gloss. [Example]

[0051] The configurations of the cleaning sheet 10 and finishing sheet 20 of the test examples and the evaluations of the test examples are shown in Tables 2 to 5. Test examples 1, 2, 5 to 9 and 12 to 19 are working examples, and test examples 3, 4, 10 and 11 are comparative examples.

[0052] [Table 2]

[0053] [Table 3]

[0054] [Table 4]

[0055] [Table 5]

[0056] The details of the ingredients are listed below.

[0057] First nonwoven sheet Produced using the spunlace method with the fiber ratio and basis weight shown in the table Silicone oligomer (gloss component) DOWSIL5314 (Dow Toray Industries, Inc.) Silane coupling agent (gloss component) Amino group (e.g., 3-aminopropyltriethoxysilane) Wax emulsion (gloss component) AQUACER515 (BYK Japan Co., Ltd.) Silicone oil emulsion (gloss component) X-52-8046 (Shin-Etsu Chemical Co., Ltd.) Modified silicone oil emulsion (gloss component) NP2609 (manufactured by Asahi Kasei Wacker Silicone Co., Ltd.) Silicone resin emulsion (gloss component) X-52-8005 (Shin-Etsu Chemical Co., Ltd.) Second nonwoven sheet Produced using the spunlace method with the fiber ratio and basis weight shown in the table These materials were commercially available except for the nonwoven fabric sheet.

[0058] In the examples, the exterior of an automobile E was wiped and cleaned using the cleaning sheet 10 shown in the table without washing with water, and then the cleaned exterior E was wiped and finished with the finishing sheet 20 shown in the table. The washed exterior of the automobile E was then subjected to a gloss test and a water repellency test and evaluated. The evaluation methods for each test are as follows.

[0059] <Gloss test> In the gloss test, the gloss of the exterior E, which was washed using the combination of car wash sheets of the test example, was visually judged to be different from that of the exterior E, which was washed using a commercially available car wash sheet. The evaluation was then carried out with a rating of ○ for a gloss superior to that of the commercially available product, a rating of △ for a gloss equivalent to that of the commercially available product, and an evaluation of × for a gloss inferior to that of the commercially available product, such as when dust D was dragged on the surface of the exterior E, causing scratches on the exterior E, when the gloss component 13 could not be evenly spread, or when more gloss component 13 was scraped off than necessary. The commercially available product was used to wash a car using only one type of car wash sheet, and the ingredients contained in the nonwoven fabric were listed as water, alcohol, surfactant, and silicone resin compound.

[0060] <Water repellency test> In the water repellency test, tap water was sprayed onto exterior E, which had been washed using the combination of car wash sheets of the test example, and the difference in water repellency from commercially available products was visually judged. Then, the evaluation was made as follows: ◯ indicates that the water repellency was superior to that of the commercially available product, △ indicates that the water repellency was equivalent to that of the commercially available product, and × indicates that the water repellency was inferior to that of the commercially available product.

[0061] (Test Example 1) In Test Example 1, the first nonwoven fabric sheet 11 had a basis weight of 50 g / m 2 The cleaning sheet 10 used was made of rayon fiber, which is easily positively charged, a cleaning component 12, a glossing component 13, a silane coupling agent, and a polar solvent 14, a mixture of ethanol and water. The finishing sheet 20 had a second nonwoven fabric sheet 21 with a basis weight of 80 g / m 2 The cleaning sheet 10 was made of cotton with a Young's modulus of 9.3 GPa, and the finishing component 22 was a mixture of ethanol and water as the volatile solvent 24. In Test Example 1, when the exterior E of a vehicle was wiped with the cleaning sheet 10, the gloss component 13 was spread over the exterior E, and the polar solvent 14 absorbed the dust D adhering to the exterior E. When the polar solvent 14 volatilized, the positively charged first nonwoven fabric sheet 11 absorbed the negatively charged dust D, preventing the exterior E from being damaged by the drag of dust. When the exterior E was wiped with the finishing sheet 20, the finishing component 22 provided good slippage, and the basis weight was 80 g / m. 2 The second nonwoven fabric sheet 21, which has a Young's modulus of 9.3 GPa, moderately distributed the wiping force, and the cotton contained in the second nonwoven fabric sheet 21 evenly spread the gloss component 13 applied to the exterior E, while scraping off any excess gloss component 13. As a result, uneven gloss on the exterior E was suppressed, and the gloss was superior to that of commercially available products. Furthermore, because the evenly spread gloss component 13 was a silane coupling agent, the water repellency was superior to that of commercially available products.

[0062] (Test Example 2) In Test Example 2, the first nonwoven fabric sheet 11 had a basis weight of 50 g / m 2The cleaning sheet 10 used was made of 66 nylon fiber, which is easily positively charged, cleaning component 12, gloss component 13, a silane coupling agent, and polar solvent 14, a mixture of ethanol and water. The finishing sheet 20 had a second nonwoven fabric sheet 21 with a basis weight of 80 g / m 2 Cotton with a Young's modulus of 9.3 GPa was used (no finishing component 22). In Test Example 2, when the exterior E of a vehicle was wiped with the cleaning sheet 10, the gloss component 13 was spread over the exterior E, and the polar solvent 14 absorbed the dust D adhering to the exterior E. When the polar solvent 14 volatilized, the positively charged first nonwoven fabric sheet 11 absorbed the negatively charged dust D, preventing the exterior E from being scratched by the dust being dragged along. When the exterior E was wiped with the finishing sheet 20, the absence of the finishing component 22 resulted in slightly poor slipperiness, but the basis weight of 80 g / m 2 The wiping force was adequately distributed by the second nonwoven fabric sheet 21, and the cotton with a Young's modulus of 9.3 GPa contained in the second nonwoven fabric sheet 21 allowed the gloss component 13 applied to the exterior E to be spread evenly. As a result, uneven glossiness of the exterior E was suppressed, and the gloss was equivalent to that of a commercially available product. Furthermore, because the gloss component 13 that was evenly spread was a silane coupling agent, the water repellency was superior to that of a commercially available product.

[0063] (Test Example 3) Test Example 3 was carried out by changing the first nonwoven fabric sheet 11 from Test Example 1 to a basis weight of 50 g / m 2 In Test Example 3, when the cleaning sheet 10 was used to wipe the exterior E of a vehicle, the gloss component 13 was spread over the exterior E and the polar solvent 14 absorbed the dust D adhering to the exterior E. However, unlike Test Example 1, when the polar solvent 14 evaporated, the first nonwoven fabric sheet 11 made of cotton did not absorb the dust D, and the dust D was dragged across the surface of the exterior E, causing scratches on the exterior E. As a result, the gloss was inferior to that of commercially available products.

[0064] (Test Example 4) In Test Example 4, the first nonwoven fabric sheet 11 had a basis weight of 80 g / m 2The cleaning sheet 10 used contained rayon fibers that are easily positively charged, a cleansing component 12, a glossing component 13 made of silicone oligomer, and a polar solvent 14 made of a mixture of ethanol and water. The finishing sheet 20 used a second nonwoven fabric sheet 21 with a basis weight of 80 g / m. 2 The cleaning sheet 10 was used to wipe the exterior E of a vehicle, and polyethylene fibers with a Young's modulus of 0.4 GPa were used as the finishing component 22. The volatile solvent 24 was a mixture of ethanol and water. In Test Example 4, when the exterior E of a vehicle was wiped with the cleaning sheet 10, the gloss component 13 was spread over the exterior E, and the polar solvent 14 absorbed the dust D adhering to the exterior E. When the polar solvent 14 volatilized, the positively charged first nonwoven fabric sheet 11 absorbed the negatively charged dust D, preventing the exterior E from being damaged by the dragging of dust. When the exterior E was wiped with the finishing sheet 20, the basis weight was 80 g / m. 2 The wiping force was dispersed appropriately by the second nonwoven fabric sheet 21. However, since the second nonwoven fabric sheet 21 was made of polyethylene fibers with a Young's modulus of 0.4 GPa, it was soft and could not spread the gloss component 13 evenly on the outer packaging E, resulting in a gloss inferior to that of commercially available products.

[0065] (Test Example 5) Test Example 5 was the same as Test Example 4 except that the second nonwoven fabric sheet 21 had a basis weight of 80 g / m 2 In Test Example 5, similar to Test Example 4, when the cleaning sheet 10 was used to wipe the exterior E of a vehicle, the gloss component 13 was spread over the exterior E, and the polar solvent 14 absorbed the dust D adhering to the exterior E. When the polar solvent 14 evaporated, the positively charged first nonwoven fabric sheet 11 absorbed the negatively charged dust D, preventing the exterior E from being scratched by the dust. Furthermore, when the finishing sheet 20 was used to wipe the exterior E, the second nonwoven fabric sheet 21, using polypropylene fibers with a Young's modulus of 1.5 GPa, evenly spread the gloss component 13 spread over the exterior E and scraped off any excess gloss component 13. This prevented uneven gloss from appearing on the exterior E, resulting in a gloss superior to that of commercially available products. Furthermore, the water repellency of the finishing sheet 20 was also superior to that of commercially available products.

[0066] (Test Examples 6 and 7) In Test Examples 6 and 7, the gloss component 13 of the cleaning sheet 10 was changed to a wax emulsion from Test Example 5, and the second nonwoven fabric sheet 21 was made of a nonwoven fabric having a basis weight of 80 g / m 2 66 nylon fiber (Test Example 6) with a Young's modulus of 2.0 GPa, and a basis weight of 80 g / m 2 and polyethylene terephthalate fiber (Test Example 7) with a Young's modulus of 2.6 GPa. Test Examples 6 and 7 had better gloss than the commercially available product, but had the same water repellency as the commercially available product. This is thought to be because the gloss component 13 was a wax emulsion.

[0067] (Test Examples 8 and 9) In Test Examples 8 and 9, the first nonwoven fabric sheet 11 had a basis weight of 40 g / m 2 The cleaning sheet 10 used contained 66 nylon fibers that are easily positively charged, a cleaning component 12, a glossing component 13, a silane coupling agent, and a polar solvent 14, a mixture of ethanol and water. The finishing sheet 20 had a second nonwoven fabric sheet 21 with a basis weight of 80 g / m 2 Rayon fiber (Test Example 8) with a Young's modulus of 6.4 GPa and a basis weight of 80 g / m 2 The test used was cotton (Test Example 9) with a Young's modulus of 9.3 GPa, and the finishing component 22 was a mixture of ethanol and water as the volatile solvent 24. In Test Examples 8 and 9, when the exterior E of a vehicle was wiped with the cleaning sheet 10, the gloss component 13 was spread over the exterior E, and the polar solvent 14 absorbed the dust D adhering to the exterior E. When the polar solvent 14 volatilized, the positively charged first nonwoven fabric sheet 11 absorbed the negatively charged dust D, preventing the exterior E from being damaged by the dragging of dust. When the exterior E was wiped with the finishing sheet 20, the basis weight was 80 g / m. 2The second nonwoven fabric sheet 21, which has a Young's modulus of 6.4 GPa, distributes the wiping force appropriately, and the rayon fiber with a Young's modulus of 6.4 GPa or the cotton with a Young's modulus of 9.3 GPa contained in the second nonwoven fabric sheet 21 allows the gloss component 13 applied to the exterior E to be spread evenly and the excess gloss component 13 to be scraped off. As a result, the occurrence of uneven gloss on the exterior E was suppressed, and the gloss was superior to that of commercially available products. Furthermore, because the evenly spread gloss component 13 was a silane coupling agent, the water repellency was superior to that of commercially available products.

[0068] (Test Example 10) Test Example 10 is the same as Test Examples 8 and 9 except that the second nonwoven fabric sheet 21 of the finishing sheet 20 has a basis weight of 80 g / m 2 In Test Example 10, when the finishing sheet 20 was used to wipe the exterior E, the hardness of the hemp with a Young's modulus of 19.6 GPa contained in the second nonwoven fabric sheet 21 caused the gloss component 13 spread on the exterior E to be scraped off more than necessary, resulting in a gloss inferior to that of the commercially available product.

[0069] (Test Examples 11 to 16) Test Examples 11 to 16 were different from Test Example 9 in that the basis weight of the second nonwoven fabric sheet 21 (cotton) of the finishing sheet 20 was changed. The basis weight of the second nonwoven fabric sheet 21 was 40 g / m 2 In Test Example 11, the stiffness of the second nonwoven fabric sheet 21 was weak, the gloss component 13 could not be evenly spread, and the gloss was inferior to that of the commercially available product. 2 In Test Example 12, the stiffness of the second nonwoven fabric sheet 21 was slightly weak, and the gloss component 13 was slightly unevenly spread, resulting in gloss equivalent to that of a commercially available product. 2In Test Examples 13 to 16, the basis weight was sufficient, the wiping force was dispersed appropriately, and the gloss component 13 applied to the exterior E was spread evenly, and the excess gloss component 13 could be scraped off. As a result, the occurrence of uneven gloss on the exterior E was suppressed, and the gloss was superior to that of commercially available products. The basis weight of the second nonwoven fabric sheet 21 was 200 g / m 2 In Test Example 16, although there was no problem with the finish, the weight of the second nonwoven fabric sheet 21 was excessive, with the weight being 200 g / m 2 If it exceeds this, it may become uneconomical.

[0070] (Test Examples 17-19) In Test Examples 17 to 19, the second nonwoven fabric sheet 21 of the finishing sheet 20 was changed from Test Example 5 to cotton, and the gloss component 13 of the cleaning sheet 10 was changed to a silicone oil emulsion (Test Example 17), a modified silicone oil emulsion (Test Example 18), or a silicone resin emulsion (Test Example 19). When the vehicle exterior E was wiped with the cleaning sheet 10, the gloss component 13 was spread over the exterior E, and the polar solvent 14 absorbed the dust D adhering to the exterior E. When the polar solvent 14 volatilized, the positively charged first nonwoven fabric sheet 11 absorbed the negatively charged dust D, preventing the exterior E from being scratched by the dust. Furthermore, when the exterior E was wiped with the finishing sheet 20, the second nonwoven fabric sheet 21, made of cotton with a Young's modulus of 9.3 GPa, was able to spread the gloss component 13 evenly on the exterior E and scrape off any excess gloss component 13. This prevented uneven gloss from appearing on the exterior E, and the gloss was superior to that of commercially available products. Furthermore, the water repellency was also superior to that of commercially available products.

[0071] In the combination of the car wash sheets of the embodiment, when the exterior E of a vehicle is wiped with the cleaning sheet 10, the gloss component 13 is spread over the exterior E, and the polar solvent 14 absorbs the dust D adhering to the exterior E. When the polar solvent 14 volatilizes, the dust D is absorbed by the first nonwoven fabric sheet 11, which contains fibers that are easily positively charged, and therefore, the exterior E is prevented from being damaged by the dust D being dragged along. Then, when the exterior E is wiped with the finishing sheet 20, the basis weight of the second nonwoven fabric sheet 21 constituting the finishing sheet 20 is 50 to 200 g / m 2 This allows the wiping force to be distributed appropriately, and the Young's modulus of the fibers contained in the second nonwoven fabric sheet 21 is 1 to 10 GPa, allowing the gloss component 13 to be spread evenly over the exterior E. In other words, the combination of the car wash sheet of the embodiment can prevent uneven gloss from occurring on the exterior E of the vehicle.

[0072] Other technical ideas that can be grasped from the combination of the car wash sheets of the embodiments configured as described above will be described below.

[0073] In the above-mentioned combination of car wash sheets, the gloss component may contain a silicone oil emulsion.

[0074] According to this, the silicone oil can be coated on the exterior of the vehicle, thereby imparting gloss to the exterior.

[0075] In the above-mentioned combination of car wash sheets, the gloss component may contain a silicone resin emulsion.

[0076] This allows a glossy coating made of silicone resin to be formed on the exterior of a vehicle. [Explanation of symbols]

[0077] 10 Cleaning Sheets 11 First nonwoven fabric sheet 12 Cleansing ingredients 13 Gloss component 14 Polar Solvents 20 Finishing Sheet 21 Second nonwoven fabric sheet 22 Finishing ingredients 24 Volatile Solvents D Dust E. Exterior

Claims

1. a cleaning sheet comprising a first nonwoven fabric sheet containing fibers that are easily positively charged, and a cleaning component impregnated in the first nonwoven fabric sheet and containing a gloss component and a polar solvent; It contains fibers with a Young's modulus of 1 to 10 GPa and a basis weight of 50 to 200 g / m 2 A finishing sheet consisting of a second nonwoven fabric sheet, A combination of car wash sheets that are characterized by their completeness.

2. 2. The car wash sheet combination of claim 1, wherein the second nonwoven fabric sheet is impregnated with a treatment component containing a volatile solvent.

3. 2. The car wash sheet combination according to claim 1, wherein the fibers that are easily positively charged are rayon fibers.

4. The combination of the car wash sheet according to claim 1, characterized in that the fiber having a Young's modulus of 1 to 10 GPa is cotton.

5. 2. The car wash sheet combination of claim 1, wherein the polar solvent is a mixture of alcohol and water.

6. A car washing method comprising: a cleaning step of wiping and cleaning the exterior of a vehicle using the cleaning sheet according to any one of claims 1 to 5 without washing with water; and a finishing step of wiping and finishing the exterior that has been cleaned using the finishing sheet according to any one of claims 1 to 5.

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