JP6236592B1 - Coating liquid storage body, coating liquid storage body manufacturing method, coating liquid storage base material, and coating film manufacturing method - Google Patents

Abstract

An object of the present invention is to enable a user to easily perform silica glass coating on the surface of various articles to be subjected to protective coating, such as a display of a mobile phone, and also has moderate flexibility and efficiency at the time of application. And a coating liquid reservoir capable of storing a sufficient amount of the coating liquid. A coating liquid reservoir comprising a base material containing at least microfibers as a main component and a coating liquid containing dibutyl ether and a silicon compound impregnated in the base material. The microfiber is made of polyester and polyamide, or 100% by weight of polyester, for example, 50 to 75% by weight of polyester and 25 to 50% by weight of polyamide. [Selection] Figure 1

Description

  The present invention relates to a coating liquid storage body, a manufacturing method of a coating liquid storage body, a base material for coating liquid storage, and a manufacturing method of a coating film, and is suitable for, for example, performing a protective coating on the surface of a smartphone display. The present invention relates to a coating liquid storage body, a manufacturing method thereof, a coating liquid storage base material suitable for use in storage of the coating liquid, and a coating film manufacturing method using the coating liquid storage body.

  2. Description of the Related Art Conventionally, mobile phones such as smartphones are often used after a protective coating is applied to the surface of a display (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2015-196748

  However, when the protective coating film on the display surface is scratched or peeled off for some reason, it is difficult for the user to repair the protective coating film, and it is difficult to repair the protective coating film. It was.

  Therefore, the problem to be solved by the present invention is that the user can easily perform silica glass coating on the surface of various articles to be subjected to protective coating, such as a display of a mobile phone, and has an appropriate flexibility. Coating liquid storage body capable of storing a sufficient amount of coating liquid, a method for producing the coating liquid storage body, and for coating liquid storage used in the coating liquid storage body It is to provide a substrate and a method for producing a coating film using the coating liquid reservoir.

  Other problems to be solved by the present invention include a coating liquid reservoir that can be stored at room temperature, a method for producing the coating liquid reservoir, a coating liquid storage substrate used in the coating liquid reservoir, and the coating liquid storage It is providing the manufacturing method of the coating film using a body.

In order to solve the above problems, the present invention provides:
A substrate containing at least a microfiber as a main component;
A coating liquid containing dibutyl ether and a silicon compound impregnated in the base material;
A coating liquid reservoir having

  The microfiber is preferably made of polyester and polyamide, or 100% by weight of polyester. Polyamides are roughly classified into aliphatic polyamides and wholly aromatic polyamides (aramids), but aliphatic polyamides are preferably used when flexibility is important. A typical aliphatic polyamide is generally called nylon. Nylon may be basically any type, and specific examples include nylon 6, nylon 11, nylon 12, nylon 66, and the like. Although dibutyl ether has high volatility at room temperature, the coating liquid storage body can be stored at room temperature by selecting the composition of the microfiber. In addition, in a method of use in which the coating liquid is exuded from the substrate by applying the substrate impregnated with the coating solution to the coating surface and applied, it is desired that the substrate has high flexibility. As described above, from the viewpoint of enabling the coating liquid storage body to be stored at room temperature and ensuring high flexibility, the microfiber is preferably 50% by weight to 75% by weight polyester and 25% by weight to 50% by weight. % Of polyamide, more preferably 60% to 75% by weight of polyester and 25% to 40% by weight of polyamide, more preferably 68% to 72% by weight. It consists of the following polyester and 28 wt% or more and 32 wt% or less of polyamide, for example, 70 wt% of polyester and 30 wt% of polyamide. A similar effect can be obtained with microfiber made of 100% by weight of polyester. The shape and size of the substrate are not particularly limited and are appropriately selected according to the amount of the coating liquid to be impregnated, the shape and size of the container to be used when the substrate is sealed in the container, When used, it is selected to have a sheet size that fits in the thin container.

  The coating liquid containing dibutyl ether and silicon compound preferably contains 30% by weight to 70% by weight dibutyl ether and 30% by weight to 70% by weight silicon compound, and more preferably 40% by weight. % To 60% by weight of dibutyl ether and 40% to 60% by weight of silicon compound, for example, 50% to 53% by weight of dibutyl ether and 47% to 50% by weight of silicon compound. In any case, the sum of dibutyl ether and silicon compound does not exceed 100% by weight. The silicon compound is appropriately selected according to the function required for the coating, but polysilicate is generally used, and ethyl polysilicate is preferably used. By using this coating liquid, silica glass can be coated.

  The coating liquid may contain substances other than dibutyl ether and silicon compounds as necessary. For example, when the coating film has antibacterial properties, it contains an antibacterial agent. An antibacterial agent is not specifically limited, According to the performance requested | required of a coating film, it selects suitably from conventionally well-known things. For example, when a coating film requires high transparency, an antibacterial agent that does not inhibit transparency is used. The antibacterial agent may be a natural antibacterial agent or a synthetic antibacterial agent.

  Typically, the coating solution reservoir further includes a container that seals the substrate impregnated with the coating solution. That is, the base material impregnated with the coating liquid is sealed in the container. This container is not particularly limited as long as it protects dibutyl ether contained in the coating liquid from air or light, and the inner surface is formed of a material that does not react with dibutyl ether. The shape, material, size, etc. are appropriately selected according to the above. The container is preferably a thin container, for example, an aluminum pack, from the viewpoint of easy handling, transportation, ease of storage, and the like.

In addition, this invention
Impregnating a base material containing at least a main component of microfiber with a coating liquid containing dibutyl ether and a silicon compound;
It is a manufacturing method of the coating liquid storage body which has this.

  This method for producing a coating liquid reservoir typically further includes the step of sealing the substrate impregnated with the coating liquid in a container.

In addition, this invention
A coating liquid storage base material that is impregnated and stored with a coating liquid containing dibutyl ether and a silicon compound,
A substrate for storing a coating liquid, comprising at least microfibers as a main component.

In addition, this invention
A step in which a substrate containing at least a main component of microfiber is impregnated with a coating solution containing dibutyl ether and a silicon compound is brought into contact with the coating surface of an object to be coated, and the coating solution is applied;
It is a manufacturing method of the coating film which has this.

  This method for producing a coating film further includes the step of vitrifying the silicon compound contained in the coating liquid by applying the coating liquid to the coating surface of the object to be coated and then bringing the fixing liquid into contact with the coating liquid. Here, the fixing solution is used for advancing vitrification by reaction with a silicon compound, and is appropriately selected depending on the silicon compound used. For example, tap water or purified water is used. When the coating film has antibacterial properties, an antibacterial agent may be included in the coating solution, but an antibacterial agent may be included in the fixing solution. The method of bringing the fixing solution into contact with the coating solution may be basically any method, and is selected as necessary. Preferably, the base material mainly containing a nonwoven fabric is impregnated with the fixing solution. The fixer is brought into contact with the coating solution by bringing the resulting solution into contact with the coating solution applied to the coating surface. The shape of the base material containing the nonwoven fabric as a main component is not particularly limited and is selected as necessary. Examples of the raw material of the nonwoven fabric include aramid fiber, glass fiber, cellulose fiber, nylon fiber, vinylon fiber, polyester fiber, polyolefin fiber, rayon fiber, and specific examples include polyester, polyethylene, polypropylene, rayon, nylon, Examples include, but are not limited to acrylic and vinylon. The object to be coated is not particularly limited and may basically be any kind of material. For example, various electronic devices having a display, for example, a display such as a smartphone or a tablet terminal, or an arts and crafts It may be.

  In the invention of the manufacturing method of the coating liquid reservoir, the base material for coating liquid storage, and the manufacturing method of the coating film, what has been described in relation to the coating liquid reservoir is valid as long as it is not contrary to the nature. .

  According to the present invention, the user can easily perform silica glass coating on the surface of various articles for protective coating such as a display of a mobile phone, and also has an appropriate flexibility. It is possible to realize a coating liquid storage body in which the time efficiency is high and a sufficient amount of the coating liquid is stored. Moreover, the coating liquid storage body which can be preserve | saved at normal temperature is also realizable by selection of a composition of microfiber. Then, the silica glass coating can be easily performed on the coating surface of the object to be coated using the coating liquid reservoir.

It is the front view and sectional drawing which show the aluminum pack type coating liquid storage body by 1st Embodiment. It is sectional drawing which shows the manufacturing method of the coating film by 2nd Embodiment.

  Hereinafter, modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described.

<First Embodiment>
[Coating fluid reservoir]
1A and 1B show an aluminum pack type coating liquid storage body 10, FIG. 1A is a front view, and FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A. As shown in FIGS. 1A and 1B, the coating liquid storage body 10 includes a rectangular or square thin aluminum pack 11 sealed with a rectangular or square sheet-like base material 12 impregnated with a coating liquid. Yes. The outer peripheral part 11a of the aluminum pack 10 is sealed on both sides.

  The substrate 12 includes at least microfibers as a main component, and is made of, for example, only the microfibers. The microfiber is made of, for example, polyester and polyamide, or 100% by weight of polyester. The microfiber is preferably composed of 50% by weight or more and 75% by weight or less of polyester and 25% by weight or more and 50% by weight or less of polyamide in order to enable storage at room temperature and to obtain excellent flexibility. Preferably, 60% to 75% by weight polyester and 25% to 40% by weight polyamide, more preferably 65% to 75% by weight polyester and 25% to 35% by weight. Most preferably, it is composed of 68% by weight or more and 72% by weight or less of polyester and 28% by weight or more and 32% by weight or less of polyamide (100% by weight in total of polyester and polyamide).

  The coating liquid impregnated in the substrate 12 contains dibutyl ether and a silicon compound, and preferably contains 30% by weight to 70% by weight dibutyl ether and 30% by weight to 70% by weight silicon compound. More preferably, it contains 40 wt% or more and 60 wt% or less of dibutyl ether and 40 wt% or more and 60 wt% or less of silicon compound, for example, 50 wt% or more and 53 wt% or less of dibutyl ether and 47 wt% And 50% by weight or less of a silicon compound (the sum of dibutyl ether and silicon compound does not exceed 100% by weight). For example, an antibacterial agent is included in the coating liquid as necessary. Antibacterial agents include, for example, β-lactams, aminoglycosides, tetracyclines, lincomycins, chloramphenicols, macrolides, ketolides, polypeptides and glycopeptides. Examples of the synthetic antibacterial agent include pyridonecarboxylic acid (quinolone) -based, new quinolone-based, oxazolidinone-based, and sulfa-based agents. Examples of β-lactam antibacterial agents include penicillins such as penicillin G, penicillins such as ampicillin and cloxacillin, β-lactamase inhibitors containing ampicillin and sulbactam, penicillins such as cefazolin, and cefoperazone and sulbactam such as cefoperazone and sulbactam. Examples include cephem series containing a lactamase inhibitor, carbapenem series such as imipenem / cilastatin, monobactam series such as aztreonam, and penem series such as faropenem. Examples of aminoglycoside antibacterial agents include kanamycin and streptomycin. Examples of lincomycin-based antibacterial agents include lincomycin and clindamycin. Examples of the fosfomycin-based antibacterial agent include fosfomycin. Examples of tetracycline antibacterial agents include tetracycline and oxytetracycline. Examples of chloramphenicol antibacterial agents include chloramphenicol. Examples of macrolide antibacterial agents include 14-membered ring macrolides such as erythromycin, nitrogen-containing 15-membered ring macrolides such as azithromycin, and 16-membered ring macrolides such as josamycin. Examples of ketolide antibacterial agents include tethromycin. Examples of polypeptide antibacterial agents include colistin. Examples of glycopeptide antibacterial agents include vancomycin. Examples of streptogramin antibacterial agents include quinupristin and dalfopristin. Examples of quinolone antibacterial agents include pyridone carboxylic acids such as nalidixic acid. Examples of the new quinolone antibacterial agent include third generation quinolone fluoroquinolone such as norfloxacin, and fourth generation quinolone eight methoxyquinolone such as sparfloxacin. Examples of the sulfa drug-based antibacterial agent include diphenylsulfone. Examples of the oxazolidinone antibacterial agent include linezolid. As the antibacterial agent, in addition to the above, polyaminopropyl biguanide can also be used.

  As the aluminum pack 11, a conventionally known one can be used.

[Method for producing coating liquid storage body]
First, a sheet-like base material 12 having a necessary size is prepared.

  Next, the coating liquid is applied to one side of the base material 12, the base material 12 is immersed in the coating liquid contained in the container, the base material 12 is placed in the container, and the coating liquid is injected to the base material 12. The substrate 12 is impregnated with the coating liquid by bringing it into contact.

  After impregnating the base material 12 with the coating liquid, the base material 12 is placed on the aluminum sheet used in the aluminum pack 11, and another aluminum sheet having the same shape as the aluminum sheet is placed thereon, and these aluminum sheets The outer periphery of is sealed with a double-sided seal. Alternatively, as another method, the base material 12 is placed in an aluminum pack bag sealed on three sides, the coating solution is injected into the bag with a dropper or the like, and the air inside the bag is pushed out. After that, the mouth is sealed with a sealer. The coating liquid is sucked into the substrate 12 and impregnated in the bag.

  As described above, the aluminum-pack type thin coating liquid storage body 10 is manufactured.

[Example 1]
As the substrate 12, a commercially available microfiber cloth made of 70% by weight polyester and 30% by weight nylon was used. The microfiber cloth has a size of 4 cm × 3 cm and a thickness of 0.6 mm.

  As the coating solution, a coating solution composed of 50% by weight of dibutyl ether and 50% by weight of ethyl polysilicate was used.

  After placing the microfiber cloth in a commercially available aluminum pack bag sealed on three sides, 1 ml of the coating solution was injected into the bag with a dropper.

  Next, after air inside the bag was pushed out, the mouth was sealed with a sealer.

  Thus, an aluminum pack type coating liquid reservoir was produced.

  When this aluminum pack-type coating solution reservoir was stored at room temperature for half a year, no abnormality was found, and even after opening and confirming the contents, gasification of dibutyl ether was not observed. That is, although dibutyl ether has high volatility and volatilizes immediately at room temperature, the coating liquid-impregnated microfiber cloth contained in this aluminum pack type coating liquid reservoir is not digasified by gasification, It was found that it can be stored at room temperature for at least half a year. Further, this coating liquid-impregnated microfiber cloth has excellent flexibility. Furthermore, the coating liquid-impregnated microfiber cloth has a size of 4 cm × 3 cm, a thickness of 0.6 mm and a small volume, but can store 1 ml or more of the coating liquid. For example, the surface of a normal smartphone display can be coated eight times with 1 ml of the coating solution.

[Example 2]
As the substrate 12, a commercially available microfiber cloth made of 85% by weight polyester and 15% by weight nylon used for wiping cloth glasses was used, and this microfiber cloth was impregnated with a coating solution in the same manner as in Example 1. Then, an aluminum pack seal was performed.

  In this aluminum pack, the flexibility of the coating liquid-impregnated microfiber cloth and the amount of impregnation of the coating liquid are sufficient, but gasification of dibutyl ether contained in the coating liquid was observed when stored at room temperature.

[Example 3]
As the substrate 12, a commercially available microfiber cloth made of 90% by weight polyester and 10% by weight nylon used for wiping cloth spectacles was used, and this microfiber cloth was impregnated with a coating solution in the same manner as in Example 1. Then, an aluminum pack seal was performed.

  In this aluminum pack, the flexibility of the coating liquid-impregnated microfiber cloth and the amount of impregnation of the coating liquid are sufficient, but gasification of dibutyl ether contained in the coating liquid was observed when stored at room temperature.

[Example 4]
A commercially available microfiber cloth made of 100% by weight polyester was used as the substrate 12, and the microfiber cloth was impregnated with a coating solution in the same manner as in Example 1 to perform aluminum pack sealing.

  In this aluminum pack, the flexibility of the coating liquid-impregnated microfiber cloth and the amount of impregnation of the coating liquid are sufficient, even if stored at room temperature all day and night, no abnormalities are seen, even if opened and confirmed the contents, No gasification of dibutyl ether was observed.

[Comparative Example 1]
A commercially available micro-type paper sheet used for wiping eyeglasses was used as the substrate, and this paper sheet was impregnated with a coating solution in the same manner as in Example 1 to perform aluminum pack sealing.

  However, in this aluminum pack, the amount of the coating liquid that can be impregnated into the paper sheet is small, and when stored at room temperature, it becomes dry in a short time, and the paper sheet is too hard at the time of application. It was found that there was a risk of scratching the coating surface.

[Comparative Example 2]
A cloth of 100% nylon was used as a base material, and this cloth was impregnated with a coating solution in the same manner as in Example 1 to perform aluminum pack sealing.

  However, in this aluminum pack, not only the flexibility of 100% nylon cloth was poor, but also gasification of dibutyl ether contained in the coating liquid was observed when stored at room temperature.

  As described above, according to the first embodiment, the substrate 12 mainly composed of microfibers, for example, microfibers composed of polyester and polyamide or microfibers composed of 100% by weight of polyester is the main component. And a coating liquid containing dibutyl ether and a silicon compound on the substrate 12, for example, 50 wt% or more and 53 wt% or less of dibutyl ether and 47 wt% or more and 50 wt% or less of a silicon compound. By impregnating the coating liquid containing, and sealing the base material 12 impregnated with the coating liquid to the aluminum pack 11, the aluminum pack type coating liquid storage body 10 can be realized. In addition, since the base material 12 has appropriate flexibility, in the usage method in which the base material 12 impregnated with the coating liquid is brought into contact with the coating surface to exude the coating liquid and applied, the application efficiency is improved. Can be planned. Further, in particular, by using a microfiber that is composed of 50% by weight to 75% by weight polyester and 25% by weight to 50% by weight polyamide, or 100% by weight polyester, Thus, an aluminum pack type coating liquid storage body 10 that can be stored for a long time can be realized. Furthermore, according to the aluminum pack type coating liquid storage body 10, a sufficient amount of the coating liquid per unit volume of the substrate 12 can be stored. Moreover, the coating film which has an antibacterial function can be manufactured by including an antibacterial agent in a coating liquid.

<Second Embodiment>
[Method for producing coating film]
In the second embodiment, a method for producing a coating film using the aluminum pack type coating liquid reservoir 10 according to the first embodiment will be described.

  As shown in FIG. 2A, first, dirt (sand particles, oil, moisture, etc.) on the coating surface 101 of the article to be coated 100 is removed by wiping with a commercially available cleaning paper. The object to be coated 100 may be anything, for example, a smartphone display.

  Next, the aluminum pack type coating liquid storage body 10 is opened, and the base material 12 impregnated with the coating liquid is taken out. Next, as shown in FIG. 2B, the base material 12 impregnated with the coating liquid is brought into contact with the coating surface 101 to lightly wipe the entire surface of the coating surface 101. At this time, when the substrate 12 is lightly wiped, the coating solution impregnated in the substrate 12 is slightly compressed and the coating solution 102 is applied to the coating surface 101 as shown in FIG. 2C. it can. If necessary, after that, for example, the coating liquid 102 is lightly spread vertically and horizontally with a round bar towel in which a microfiber sheet made of polyester and polyamide (for example, nylon), for example, a microfiber sheet having the same composition as the substrate 12 is wound around a shaft. Trace and spread evenly so that there is no unevenness or unpainted residue. In the case where only a part of the coating surface 101 is coated, the coating liquid 102 is applied only to that part.

  Next, as shown in FIG. 2D, a fixing solution 103 is applied on the coating solution 102. If necessary, the excess fixing solution 103 is then wiped off. The method for applying the fixing liquid 103 is not particularly limited. For example, the fixing liquid 103 can be easily applied as follows. That is, an aluminum pack type fixer storage body in which a non-woven sheet of a predetermined size, for example, an acrylic non-woven sheet impregnated with a fixer is sealed in an aluminum pack is prepared. Then, the aluminum pack type fixer storage body is opened, and the acrylic nonwoven fabric sheet impregnated with the fixer is taken out. Next, the fixing solution 103 is applied onto the coating solution 102 by lightly putting the coating solution 102 with an acrylic nonwoven fabric sheet impregnated with the fixing solution 103. After a certain period of time (for example, after several minutes), the fixing of the coating liquid 102 with the fixing liquid 103 is completed, and the silicon compound contained in the coating liquid 102 is vitrified to form silica glass.

  As a result, as shown in FIG. 2E, the coating film 104 made of silica glass is formed on the coating surface 101 of the article 100 to be coated. By including an antibacterial agent in the coating liquid 102 or the fixing liquid 103 in advance, the coating film 104 having an antibacterial function can be formed. Alternatively, the coating film 104 may have an antibacterial function by applying an antibacterial liquid using an antibacterial liquid application sheet containing an antibacterial agent after the coating liquid 102 is fixed.

  If necessary, the coating liquid 102 application, the fixing liquid 103 application, and the fixing process are repeated until a coating film 104 having a desired thickness is formed.

[Example 5]
The silica glass coating was applied to the surface of the smartphone display by the following procedure.

  The surface of the smartphone display was cleaned with cleaning paper. Thereafter, the aluminum pack type coating liquid reservoir 10 of Example 1 was opened, and the base material 12 impregnated with the coating liquid was taken out, and the coating liquid 102 was applied to the surface of the display using the base material 12. . Thereafter, the coating liquid 102 was uniformly extended with a bar towel and spread.

  Next, the surface of the coating liquid 102 was lightly put with an acrylic nonwoven fabric impregnated with water as a fixing solution, and water was applied as the fixing solution 103. When about 3 minutes passed after fixing, a silica glass coating film was formed. Thereafter, the remaining water was wiped off with a micro cloth for wiping. Finally, the surface of the coating film was polished with dry eyeglasses.

  Thus, a silica glass coating film was formed on the display surface.

  When the hardness test of the silica glass coating film thus formed was performed, a pencil hardness of 9H, which was strong against impacts and scratches, was obtained. In addition, small scratches on the glass on the display surface were repaired. Furthermore, the performance of this silica glass coating film lasted for at least one year.

  As described above, according to the second embodiment, by using the base material 12 impregnated with the coating liquid, the coating film 104 made of silica glass is easily manufactured on the coating surface 101 of the article 100 to be coated. can do.

  Although the embodiments and examples of the present invention have been specifically described above, the present invention is not limited to the above-described embodiments and examples, and various modifications based on the technical idea of the present invention can be made. Is possible.

  For example, the numerical values, configurations, shapes, materials, methods, and the like given in the above-described embodiments and examples are merely examples, and different numerical values, configurations, shapes, materials, methods, and the like are used as necessary. Also good.

  DESCRIPTION OF SYMBOLS 10 ... Coating liquid storage body, 11 ... Aluminum pack, 12 ... Base material, 100 ... Coated object, 101 ... Coating surface, 102 ... Coating liquid, 103 ... Fixing liquid, 104 ... Coating film

Claims (21)

A sheet-like base material comprising at least a main component of microfiber (a total of 100% by weight of polyester and nylon) composed of 50% to 75% by weight of polyester and 25% to 50% by weight of nylon ; ,
30% by weight or more and 70% by weight or less of dibutyl ether and 30% by weight or more and 70% by weight or less of polysilicate impregnated in the above base material, and the total of dibutyl ether and polysilicate does not exceed 100% by weight Coating liquid,
An aluminum pack for sealing the base material impregnated with the coating liquid;
A coating liquid reservoir. The coating liquid storage body according to claim 1, wherein the microfiber is composed of 60% by weight to 75% by weight of polyester and 25% by weight to 40% by weight of nylon. 2. The coating liquid storage body according to claim 1, wherein the microfiber comprises 68% by weight or more and 72% by weight or less of polyester and 28% by weight or more and 32% by weight or less of nylon. The said coating liquid is a coating liquid storage body as described in any one of Claims 1-3 containing 40 to 60 weight% dibutyl ether and 40 to 60 weight% polysilicate. The coating liquid reservoir according to any one of claims 1 to 4, wherein the polysilicate is ethyl polysilicate. A sheet-like base material comprising at least a main component of microfiber (a total of 100% by weight of polyester and nylon) composed of 50% to 75% by weight of polyester and 25% to 50% by weight of nylon. A step of impregnating a coating solution containing 30% by weight or more and 70% by weight or less of dibutyl ether and 30% by weight or more and 70% by weight or less of polysilicate, wherein the total of dibutyl ether and polysilicate does not exceed 100% by weight; ,
Sealing the base material impregnated with the coating liquid in an aluminum pack;
A method for producing a coating liquid reservoir comprising: The method for producing a coating liquid storage body according to claim 6, wherein the microfiber is composed of 60% by weight to 75% by weight of polyester and 25% by weight to 40% by weight of nylon. 7. The method for producing a coating liquid storage body according to claim 6, wherein the microfiber comprises 68% by weight or more and 72% by weight or less of polyester and 28% by weight or more and 32% by weight or less of nylon. The method for producing a coating liquid storage body according to any one of claims 6 to 8, wherein the coating liquid contains 40% by weight or more and 60% by weight or less dibutyl ether and 40% by weight or more and 60% by weight or less polysilicate. . The method for producing a coating liquid storage body according to any one of claims 6 to 9, wherein the polysilicate is ethyl polysilicate. 30% by weight or more and 70% by weight or less dibutyl ether and 30% by weight or more and 70% by weight or less polysilicate, and impregnating and storing the coating liquid in which the total of dibutyl ether and polysilicate does not exceed 100% by weight A substrate for storing a sheet-like coating liquid,
A coating comprising at least a main component of microfiber (a total of 100% by weight of polyester and nylon) composed of 50% to 75% by weight of polyester and 25% to 50% by weight of nylon. Base material for liquid storage. The substrate for storing a coating liquid according to claim 11, wherein the microfiber is composed of 60% by weight to 75% by weight of polyester and 25% by weight to 40% by weight of nylon. The substrate for storing a coating liquid according to claim 11, wherein the microfiber comprises 68% by weight or more and 72% by weight or less of polyester and 28% by weight or more and 32% by weight or less of nylon. The base material for coating liquid storage as described in any one of Claims 11-13 in which the said coating liquid contains 40 to 60 weight% dibutyl ether and 40 to 60 weight% polysilicate. A sheet-like base material comprising at least a main component of microfiber (a total of 100% by weight of polyester and nylon) composed of 50% to 75% by weight of polyester and 25% to 50% by weight of nylon. Including 30% by weight to 70% by weight of dibutyl ether and 30% by weight to 70% by weight of polysilicate impregnated with a coating solution in which the total of dibutyl ether and polysilicate does not exceed 100% by weight A method for producing a coating film, comprising the step of bringing the coating solution into contact with a coating surface of an object to be coated and applying the coating liquid. The method for producing a coating film according to claim 15, wherein the microfiber is composed of 60% by weight to 75% by weight of polyester and 25% by weight to 40% by weight of nylon. 16. The method for producing a coating film according to claim 15, wherein the microfiber comprises 68% by weight or more and 72% by weight or less of polyester and 28% by weight or more and 32% by weight or less of nylon. The said coating liquid is a manufacturing method of the coating film as described in any one of Claims 15-17 containing 40 to 60 weight% dibutyl ether and 40 to 60 weight% polysilicate. The method of claim 15, further comprising the step of vitrifying the silicon compound contained in the coating liquid by applying the coating liquid to the coating surface of the object to be coated and then bringing the fixing liquid into contact with the coating liquid. The manufacturing method of the coating film as described in any one of Claims. 20. The fixing solution is brought into contact with the coating solution by bringing a base material containing at least a nonwoven fabric as the main component into impregnation with the fixing solution and contacting the coating solution applied to the coating surface. A method for producing a coating film. The method for producing a coating film according to any one of claims 15 to 20, wherein the polysilicate is ethyl polysilicate.

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