JP2003285000A - Method for forming coating film layer hard to slip and floor finish material obtained by this method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for forming a coating film layer hard to slip, excellent in anti-slip properties, especially anti-slip properties at the time of dampness without being lowered in coating film physical properties such as coating film appearance, adhesion, coating film strength and easily executed on the spot, and a floor finish material having the coating film layer hard to slip formed on its surface. <P>SOLUTION: The surface of a base material is coated with a coating film forming material insoluble or hardly soluble in water and, before the applied coating film forming material is dried or cured, an aqueous sprinkling material, which is selected from an aqueous solution or suspension of a water soluble solid substance, a water soluble liquid substance, a water soluble solid substance and/or a water soluble liquid substance and water, is sprinkled over the surface of the coating film forming material layer. The aqueous sprinkling material is removed after the coating film forming material layer is dried or cured to form a coating film layer having a large number of fine holes formed to the surface thereof, that is, the coating film layer hard to slip. The floor finish material having the coating film layer thus formed is also disclosed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a method for producing a non-slip coating film layer on a surface of a substrate, which is not particularly limited, but is, for example, a floor in a factory or the like, which is exposed to water. TECHNICAL FIELD The present invention relates to a method for producing a non-slip coating layer suitable for providing a non-slip coating layer on a floor surface that has many opportunities to get wet and becomes slippery when wet with water, and a floor finishing material produced by this method. .

[0002]

2. Description of the Related Art For example, as a non-slip method for a floor finish having a coating layer on its surface, conventionally, a method of forming irregularities on the coating surface by using spray dust, and an aggregate being mixed on the coated surface The method of mixing aggregates and polymer powder in the paint (Japanese Patent Application No. 8-217,994, Japanese Patent Application No. 9-87,547) is also known. A method in which micro holes in the shape of micro craters are statistically distributed on the surface of the material with a laser (Table 1
-505,185), a method of etching with a chemical solution (Japanese Patent No. 2,574,646), and the like.

However, in the method of forming irregularities on the surface of the coating film or spraying the aggregate, there is a problem that the surface of the coating film formed becomes rough and the smoothness is lost and the stain resistance is significantly lowered. In addition, when an aggregate or a polymer powder is mixed in the paint, there is a problem that the smoothness is similarly lost and the uniformity of the sprayed product is poor and the appearance of the coating film is significantly deteriorated. In addition, there is a limit to the size of the base material that can be processed by the method of forming micro holes in the shape of micro craters with a laser, and there is a problem that it is difficult to work at the site of the floor covering material. Regarding the method, the base material is limited to mineral materials such as stones and tiles, and there is a problem that the chemical solution is dangerous and the disposal of the wash water after neutralization is troublesome.

As a method for making the coating film porous, a resin liquid obtained by dispersing or dissolving a resin in a water-insoluble organic solvent, water-soluble inorganic salt particles having an average particle diameter of 1 μm or less, and an average particle diameter of 1 μm are used. After coating an organic solvent-based paint obtained by mixing with the following pigments on a substrate, and then evaporating the organic solvent to obtain a dry coating film or a cured coating film, the water-soluble inorganic salt in the coating film A method of eluting particles with water has been proposed (Japanese Patent Laid-Open No. 2001-179,173).

However, with respect to the coating film which is made porous by this method, inorganic materials such as metal, concrete and glass, plastic materials such as metal, concrete and glass, organic materials such as wood and fiber, coating materials and the like are combined. However, similar to the method of mixing aggregates and polymer powder in the above-mentioned paint, pores reach from the inside of the coating film to the surface of the substrate and Since the physical properties of the film are remarkably lowered, it is not suitable as a method for preventing slippage of a floor finish having a coating layer on the surface.

[0006]

Therefore, the inventors of the present invention have made it possible to prevent slippage, especially adhesion, and to prevent slippage, particularly, the physical properties of a coating layer to be formed. Excellent anti-slip properties when wet, and as a result of diligent study on a method for producing a non-slip coating layer that is easy to apply on site, as a result of applying the above-mentioned water-based spreading material on the surface of the base material,
The present invention has been completed based on the finding that it is possible to easily prepare a coating layer that is not slippery on the surface of a substrate by removing the aqueous spraying material after the coating film forming material layer is dried or cured.

Therefore, an object of the present invention is to prevent slippage, particularly when wet, without deteriorating coating film appearance, adhesion, coating strength and other physical properties of the coating film to be formed. Another object of the present invention is to provide a method for producing a non-slip coating layer, which is excellent in heat resistance and easy to apply on site. Another object of the present invention is to provide a floor finishing material having such a non-slip coating layer formed on the surface.

[0008]

That is, according to the present invention, a coating film-forming material that is insoluble or sparingly soluble in water is applied to the surface of a substrate, and the applied coating film-forming material layer is dried or cured. , An aqueous dispersion material selected from water-soluble solid substance, water-soluble liquid substance, aqueous solution or suspension of water-soluble solid substance and / or water-soluble liquid substance, and water on the surface of the coating film forming material layer Is applied, the coating film forming material layer is dried or cured, and then the aqueous spraying material is removed. Further, the present invention is a floor finishing material which is formed by the above method and has a non-slip coating layer on the surface.

In the present invention, the film-forming material that is insoluble or hardly soluble in water applied to the surface of the base material is insoluble or hardly soluble in water and is applied to the surface of the base material to form a coating film. Any material may be used as long as it forms a layer.

Here, as the coating film forming material used in the present invention, various resin components conventionally used as one of the coating components, for example, non-crosslinking type resins, and self-crosslinking or curing agents are used. In addition to cross-linkable cross-linking type resins, etc., these resin components include alcohol-based, hydrocarbon-based, ketone-based, ester-based solvents, fluidity modifiers, curing catalysts, UV absorbers, heat Examples thereof include auxiliary agents such as stabilizers and initiators, pigments such as color pigments, extender pigments, anti-corrosion pigments, metal pigments, and other components such as dyes. It may be blended in a liquid type or a two-component type.

Specific examples of the non-crosslinking type resin include epoxy resin, polyester resin, acrylic resin, vinyl copolymer, vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate resin copolymer. , Fibrous resin, polyethylene resin, polypropylene resin, nylon, ABS resin, polycarbonate, phenol resin,
Examples thereof include fluororesins, silicone resins and the like, and modified resins thereof.

Specific examples of the cross-linking type resin include amino-curing acrylic resin, amino-curing polyester resin, (block) polyisocyanate-curing acrylic resin, (block) polyisocyanate-curing polyester resin, Examples thereof include anhydride-curable epoxy resin, polyacid-curable epoxy resin, hydrolyzable silyl group-containing resin, oxidation curable alkyd resin, and active energy ray curable resin.

In the present invention, the above-mentioned coating film forming material is applied to the surface of the base material to form a coating film forming material layer before being dried or cured. Similarly, for the purpose of preventing inhalation, improving adhesion, etc., an underlayer such as a sealer or primer is previously formed on the surface of the base material before forming the above-mentioned coating film forming material layer, and a coating film is formed on this underlayer. The coating material layer may be formed, and if necessary, before forming the uppermost coating film forming material layer, a coating film forming material which is the same as or different from this coating film forming material is applied to form a plurality of layers. A film layer may be formed.

Here, as a method for applying the coating film-forming material to the surface of the base material, conventionally known publicly known coating means can be adopted, and examples thereof include spray coating, roller coating, brush coating, and ironing. Painting, bar coater painting, etc. can be mentioned.

In the present invention, with respect to the water-soluble solid substance which is sprayed on the surface of the coating film forming material layer as the aqueous dispersion material, it does not dissolve in the coating film forming material layer, and the coating film forming material layer is It is one that can be easily removed by spraying water or the like after it is dried or cured, and more preferably, it can form micropores having an average diameter of 1 μm or more in the coating layer after removing the aqueous spray material. There is no particular limitation, but the average particle size is preferably 1000 μm or less, and more preferably 1 μm.
Or more and 500 μm or less, and even more preferably 5 μm or more 2
It is preferable that the thickness is 00 μm or less. When the average particle size of the water-soluble solid substance exceeds 1000 μm, a thicker film thickness is required for the coating film forming material layer, which is uneconomical and
On the contrary, when the average particle diameter of the water-soluble solid substance is less than 1 μm, the size of the micropores formed is small and the anti-slip effect cannot be expected so much and the coating layer It is not preferable because the time period during which the anti-slip effect lasts is shortened due to wear over time.

Such water-soluble solid substances include inorganic water-soluble solid substances such as salts obtained by neutralizing weak acids and weak bases, weak acids and strong bases, and strong acids and weak bases.
For example, one or more acid compounds selected from the group consisting of inorganic acids such as hydrochloric acid, sulfuric acid and carbonic acid, and derivatives thereof;
Alkali metals such as sodium and potassium, calcium,
1 selected from the group consisting of hydroxides of metals such as alkaline earth metals such as magnesium, ammonium compounds, etc.
And salts with two or more kinds of alkali compounds are preferable, and specific examples thereof include sodium chloride, sodium carbonate, sodium hydrogen carbonate, sodium acetate, magnesium chloride, calcium chloride, and the like, and organic water-soluble solid substances. There are synthetic, semi-synthetic and natural water-soluble polymers as specific examples, and specifically, as synthetic water-soluble polymers, polyvinyl alcohol and its derivatives, poly (meth) acrylic acid alkali salt,
Alkali salt of (meth) acrylic acid or its ester copolymer, alkali salt of acrylic acid or maleic acid copolymer,
Examples thereof include polyvinylpyrrolidone, and as the semi-synthetic water-soluble polymer, methyl cellulose, ethyl cellulose, CM
C, hydroxyalkyl cellulose, starch derivatives and the like can be exemplified, and as a natural water-soluble polymer, starch,
Examples thereof include gelatin, agar, seaweed, plant mucilage, protein and the like.

The water-soluble liquid substance may be any substance that does not dissolve in the coating film forming material layer, and specifically, lower alcohols such as methanol, ethanol, isopropyl alcohol, butanol, and acetone. ,
Lower ketones such as methyl ethyl ketone, lower ethers such as dimethyl ether and methyl ethyl ether, polyhydric alcohols such as ethylene glycol and glycerin, alkyl ethers of alkylene glycols such as ethylene glycol monobutyl ether and diethylene glycol monoethyl ether, , Amines and the like. When using these water-soluble liquid substances, if the viscosity of the water-soluble liquid substance to be used is high, it is preferable to dilute with water or the like to a viscosity range that can be sprayed. If the volatile liquid substance is a low-boiling substance or a substance that easily volatilizes and the temperature of the operating environment is high, use a low-volatile water-soluble liquid or a water-soluble liquid substance to suppress evaporation and volatility. A soluble water-soluble solid substance or the like may be added.

The aqueous solution or suspension of the water-soluble solid substance and / or the water-soluble liquid substance used as the aqueous spraying material is an aqueous solution or suspension in which the water-soluble solid substance or the water-soluble liquid substance is easily dispersed. One or two selected from a water-soluble solid substance and a water-soluble liquid substance in a suspended state.
It is prepared by dissolving or suspending one or more substances in water. Further, an alkaline compound, an acidic compound or the like can be added for the purpose of improving solubility or adjusting viscosity.

Further, the water used as the aqueous spraying material may be ordinary industrial water or the like. If necessary, a small amount of a substance selected from the above water-soluble solid substance and water-soluble liquid substance may be added. Good.

In the present invention, the coating film-forming material is applied to the surface of the substrate to form a coating film-forming material layer, and the coating film-forming material layer formed is dried or cured. The above-mentioned aqueous spraying material is sprayed on the surface of the film-forming material layer, but the timing is such that the sprayed particles of the sprayed aqueous spraying material stop on the surface of the coating film-forming material layer before being dried or cured. Part of the particles enter the layer from the surface of the coating film forming layer to form microscopic holes having a substantially U-shaped cross section on the surface of the coating film forming layer, and at the same time, splash particles of the water-based spreading material form the coating film forming layer. The timing may be such that it is not completely buried, and it is usually determined by conducting a spraying test in advance according to the types of the coating film forming material and the aqueous spraying material to be used. Similarly, regarding the amount of spray, the kind of the coating film forming material layer formed, the kind of the water-based spreading material to be spread, and the minute amount required for the non-slip coating film layer to be finally formed. Although it depends on the area ratio of the holes, the number of micro holes per unit area, etc., it is preferable to determine it by conducting a preliminary test in advance.

In this way, after the aqueous spreading material is sprayed on the surface of the coating film forming material layer before being dried or cured, the coating film forming material layer is dried or cured, and then the aqueous spreading material layer is dried. Remove to obtain a non-slip coating layer. Here, as a method for drying or curing the coating film forming material layer, normally, it may be left at the ambient temperature, but if necessary, it may be heated by means such as warm air. Further, the method for removing the aqueous spray material is not particularly limited, but preferably,
When the aqueous spray material is a water-soluble solid substance, a water-soluble liquid substance, or an aqueous solution or suspension of these water-soluble solid substances and / or water-soluble liquid substances, these water-soluble solid substances and / or Alternatively, the water-soluble liquid substance may be eluted to remove the aqueous spraying material, and when the aqueous spraying material is water, the water may simply be evaporated to be removed.

With respect to the non-slip coating layer finally formed on the surface of the base material in this manner, the average diameter of the micropores formed on the surface of the coating layer is 1 μm or more and 1,000 μm or less, preferably It is preferably about 5 to 200 μm, and the number of micro holes is 20 / cm ² or more, preferably 50.
Pieces / cm ² to 20,000 pieces / cm ² or less, more preferably 500 / cm ² or more 10,000 / cm ² or less is the well, further, the area ratio of the fine holes 3% or more, preferably Is 1
It is preferably 0% or more and 50% or less. If the average diameter of the micropores formed on the surface of the coating layer is less than 1 μm, the anti-slip property is poor, and if it exceeds 1,000 μm, the appearance of the coating layer may be impaired. If the number of holes is less than 20 / cm ² , the slip resistance will be poor, and if it is more than 20,000 / cm ² , the appearance of the coating layer may be impaired. Is 3%
If it is lower than 50%, the anti-slip property is inferior, and if it is higher than 50%, the appearance of the coating layer may be impaired.

Further, the durometer hardness (JI
There is no particular limitation on SK6253 "based on the hardness test method of vulcanized rubber", but when the base material is concrete, it is 50 or more, preferably 70 or more.
When the durometer hardness of this coating layer is less than 50, there is a problem that it is relatively soft and inferior in walking sensation, and moreover it is easily soiled.

Since fine holes having a predetermined average diameter, number and area ratio are formed on the surface of the coating layer formed by the method of the present invention, especially when the coating layer is wet with water, These minute holes exert surface tension between the soles of people moving on the coating layer, tires of automobiles, trolleys for transportation, etc., and exhibit excellent anti-slip effect due to the suction effect at that time. it is conceivable that. Therefore, the non-slip coating layer of the present invention can be made into a non-slip floor finishing material by providing it on the surface of a floor finishing material formed of, for example, synthetic resin, ceramic, metal, concrete, glass or the like. In addition, it is formed on the surface of the floor of the old paint film and exhibits excellent effects.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be specifically described below based on Examples, Comparative Examples and Test Examples.

Example 1 On a flexible board (30 cm × 30 cm × 3 mm), an epoxy resin type two-component primer [Atomix Co., Ltd. trade name:
Floor top # 800 primer] 0.2kg / m ² is applied,
It was dried for 3 hours. After that, solvent-free 2-pack type epoxy resin coating for floor [Atomics Co., Ltd. product name: floor top # 800
0] Polyvinylpyrrolidone having an average particle diameter of 70 μm (BASF Corporation) obtained by applying 1 kg / m ² and leaving it at 20 ° C. for about 3 hours and immediately before drying, as a water-soluble solid substance of an aqueous spraying material, through a 100-mesh sieve. Product name: Rubiscol K30 powder) 10.5 g / m ² was sprinkled. After that, at 20 ℃, 6
After drying under 5% temperature and humidity conditions for 24 hours and curing, the surface of the formed coating layer is thoroughly washed with water to elute the water-soluble solid substance, and then at 20 ° C. and 65% temperature and humidity. It was dried under the conditions for 7 days to obtain the test coating layer of Example 1.

The surface of the test coating layer thus obtained in Example 1 was observed with a digital HD microscope VH7000 type (manufactured by Keyence Corporation) at a magnification of 150 and photographed. The average diameter of the micropores observed on the surface of the coating layer by the method, the number and the area ratio are measured, and then the sliding resistance (BPN value) of the coating layer, the appearance, and the abrasion resistance by the method shown below. And the adhesiveness was investigated. The results are shown in Table 1.

The average diameter of the fine holes observed on the surface of the coating layer is determined by measuring the diameter of each fine hole observed per unit area (cm ² ) and calculating the average value. The number of micro holes is obtained as the number of micro holes observed per unit area (cm ² ), and the area ratio of micro holes is the unit area (cm ² ).
The total area of micropores observed per hit is shown in percentage.

[Slip resistance (BPN value)] The slip resistance (BPN value) of the coating film layer was measured by moistening the entire surface of the test coating layer with water so that the test film layer was wet. Test
ing Service's product name: portable skid resistance tester) to measure the BPN value when wet,
17th "Asphalt Pavement Guidelines" issued by Japan Road Association
Evaluation was made based on a BPN value of 40 or more (wet condition) described in “7-2 Selection of pedestrian road pavement [Explanation] (3)” on page 3 (revised 12th edition of 1997).

[Abrasion resistance] 1 having a small hole of 8 mm in the center
A slate plate having a size of 0 cm × 10 cm was used, a coating layer was formed on the surface in the same manner as in Example 1 above, and dried for 7 days to prepare a test plate. About the obtained test plate,
Using a wear tester (made by Teledyne Taber Co.), the wear amount of the coating layer was measured under the condition of 100 kg rotation with 1 kg load on one side of the wear wheel (CS-17), ◎: wear amount 50 mg or less, ○: wear Quantity 5
Evaluation was made by four-stage evaluation of more than 0 mg and less than 200 mg, Δ: more than 200 mg and less than 500 mg, and x: more than 500 mg of abrasion.

[Appearance] The appearance of the coating layer was visually observed under diffused daylight, and compared with the surface of the coating layer on which the water-based spreading material was not spread, ⊚: equivalent, ◯: somewhat inferior , △: inferior,
And x: considerably inferior.

[Adhesion] Measured according to the adhesion strength test of JIS A6909-6.10, ◎: adhesion strength over 2 MPa, ○: adhesion strength over 1 MPa and less than 2 MPa, △: adhesion strength over 0.5 MPa 1
Less than MPa, and x: Adhesion strength was evaluated by four-stage evaluation of less than 0.5 MPa.

Example 2 Sodium hydrogencarbonate having a mean particle size (long-axis measurement) of 140 μm as a water-soluble solid substance for an aqueous spraying material (commercial first-class reagent)
Was used to prepare a test coating layer in the same manner as in Example 1 except that the coating layer was sprayed on the surface of the coating forming layer at a rate of 8 g / m ² . With respect to the obtained test coating layer of Example 2, the average diameter, the number and the area ratio of the fine holes were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), the appearance and the abrasion resistance were measured. The property and the adhesiveness were examined. The results are shown in Table 1.

Example 3 As a primer, a urethane-based one-component moisture curing primer [Atomics Co., Ltd., trade name: Primer U] 0.2 kg / m ²
And a cured urethane resin coating for floors as a coating film forming material [Atomics Co., Ltd. product name: Floor Top U # 100 NE
O] 1.3 kg / m ² was used as in Example 1 except that the coating was allowed to stand at 20 ° C. for about 2 hours and then sprayed with an aqueous spray material (water-soluble solid substance: Rubiscol K30 powder) immediately before drying. A test coating layer was prepared in the same manner. With respect to the obtained test coating layer of Example 3, the average diameter, the number and the area ratio of the fine holes were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), the appearance and the abrasion resistance were measured. The property and the adhesiveness were examined. The results are shown in Table 1.

Example 4 As a primer, an acrylic silicone resin [Kaneka Zemulac YC-1505 (trade name, manufactured by Kanegafuchi Chemical Industry Co., Ltd.) was diluted with xylene to a solid content concentration of 20%, and 100 parts by weight of the diluted product was used. 2 parts by weight of tin-based catalyst added] 0.2 kg
/ m ² and 200 g / m ² of inorganic-organic hybrid resin clear paint [Atomics Co., Ltd .: solvent-free silicone-based composite resin] as a coating film forming material, and left at 20 ° C. for about 1 hour after coating. Then, a coating film layer for test was prepared in the same manner as in Example 1 except that 89 g / m ² of tap water was sprayed as an aqueous spray material immediately before drying. With respect to the obtained test coating layer of Example 4, the average diameter, the number and the area ratio of the fine holes were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), the appearance and the abrasion resistance were measured. The property and the adhesiveness were examined. The results are shown in Table 1.

Example 5 An aqueous solution of a water-soluble liquid substance (glycerin) was used as an aqueous spraying material.
50% by weight aqueous solution) on the surface of the coating film forming layer 12 g / m
^A test coating layer was prepared in the same manner as in Example 1 except that the coating was applied in the ratio of ² . With respect to the obtained test coating layer of Example 5, the average diameter, the number and the area ratio of the fine holes were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), the appearance and the abrasion resistance were measured. The property and the adhesiveness were examined. The results are shown in Table 1.

Example 6 The procedure described above was repeated except that an aqueous solution of a water-soluble solid substance (aqueous 5% by weight sodium hydrogen carbonate solution) was used as the aqueous spraying material and sprayed at a rate of 8 g / m ^{2 on} the surface of the coating film forming material layer. A test coating layer was prepared in the same manner as in Example 1. With respect to the obtained test coating layer of Example 6, the average diameter, the number and the area ratio of the fine holes were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), the appearance and the abrasion resistance were measured. The property and the adhesiveness were examined.
The results are shown in Table 1.

Example 7 A test coating layer was prepared in the same manner as in Example 1 except that the amount of the aqueous spraying material applied was 5 g / m ² . Regarding the obtained test coating layer of Example 7, in the same manner as in Example 1 above,
The average diameter, number and area ratio of the micro holes were measured, and then the slip resistance (BPN value), the appearance, the wear resistance, and the adhesion were examined. The results are shown in Table 1.

Example 8 A coating film layer for test was prepared in the same manner as in Example 1 except that the amount of the aqueous spraying material applied was 20 g / m ² . For the obtained test coating layer of Example 8, the average diameter, the number and the area ratio of the fine holes were measured in the same manner as in Example 1 above.
Then, the slip resistance (BPN value), the appearance, the wear resistance, and the adhesion were examined. The results are shown in Table 1.

Comparative Example 1 Example 1 above, except that the aqueous spraying material was not sprayed.
A coating layer for test was prepared in the same manner as in. For the test coating layer of Comparative Example 1 obtained, the average diameter, number and area ratio of the micropores were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), appearance and abrasion resistance were measured. The property and the adhesiveness were examined. The results are shown in Table 1.

Comparative Example 2 270 g / beads of water-soluble substance-coated beads having an average particle diameter of 1.2 mm (dried glass beads whose surface was coated with hydroxyethyl cellulose) as a water-soluble solid substance of an aqueous spraying material
A test coating layer was prepared in the same manner as in Example 1 except that m ² was used. For the test coating layer of Comparative Example 2 obtained, as in Example 1 above, the average diameter of the micropores,
The number and area ratio are measured and then the slip resistance (BPN
Value), appearance, wear resistance, and adhesion. The results are shown in Table 1.

Comparative Example 3 A coating film layer for test was prepared in the same manner as in Example 1 except that the amount of the aqueous spraying material applied was 1.6 g / m ² . For the test coating layer of Comparative Example 3 thus obtained, the average diameter, number and area ratio of the fine holes were measured in the same manner as in Example 1 above.
Then, the slip resistance (BPN value), the appearance, the wear resistance, and the adhesion were examined. The results are shown in Table 1.

Comparative Example 4 An aqueous solution of a water-soluble liquid substance (glycerin was used as an aqueous spray material).
Test was conducted in the same manner as in Example 5 above, except that the coating film forming material was sprayed on the surface of the coating film forming material layer at a rate of 13.3 g / m ² 6 hours after applying the coating film forming material. A coating film layer was prepared. Regarding the obtained test coating layer of Comparative Example 4,
The average diameter, the number and the area ratio of the fine holes were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), the appearance, the wear resistance, and the adhesion were examined. The results are shown in Table 1.

Comparative Example 5 The surface of the coating film layer formed by applying the coating film-forming material in the same manner as in Example 1 above, and drying and curing at 20 ° C. for 24 hours without spraying the aqueous dispersion material. With a sponge
Coat the commercial product "Slipbuster" imported from Hypertech Japan Co., Ltd. (mainly aqueous solution of ammonium phosphate fluoride), rub the surface of the coating layer with a sponge occasionally before drying, and hold for 30 minutes After that, it was neutralized with a 5 wt% -sodium bicarbonate aqueous solution, sufficiently washed with water, and dried for 7 days to prepare a test coating layer. For the test coating layer of Comparative Example 5 thus obtained, the average diameter, number and area ratio of the micropores were measured in the same manner as in Example 1 above, and then the slip resistance (BP
N value), appearance, wear resistance, and adhesion were examined. The results are shown in Table 1.

Comparative Example 6 A coating film forming material was applied in the same manner as in Example 1 above, and immediately after that, 3,000 g of silica sand No. 5 (manufactured by Northern Japan Sangyo Co., Ltd.) was applied to the surface of the coating film forming material layer formed. / m ² sprayed and dried for 24 hours to remove unfixed silica sand, then again solvent-free two-component epoxy resin coating for floor [Atomics floor top # 8000] 0.2 kg / m ² was applied and further dried for 7 days to prepare a test coating layer. Obtained Comparative Example 6
For the test coating film layer, the average diameter, number and area ratio of the micropores were measured in the same manner as in Example 1 above, and then the slip resistance (BPN value), appearance, abrasion resistance and adhesion were evaluated. Examined. The results are shown in Table 1.

[0046]

[Table 1]

In Table 1, the abbreviations for the coating film forming material and the aqueous spraying material are as follows. E-FT: Solventless 2-pack epoxy resin coating for floors [Atomics
Product name: Floor top # 8000] PVP: Polyvinylpyrrolidone (BASF product name: Rubiscol K30 powder) SHC: Sodium hydrogen carbonate (NaHCO ₃ ; first-class reagent on the market) U-FT: Cured urethane for floors Resin paint [Atomics Co., Ltd. product name: floor top U # 100 NEO] HCS: Inorganic-organic hybrid resin clear paint [Atomics Co., Ltd .: Solvent-free silicone-based composite resin] G-50: Glycerin 50% by weight aqueous solution SHC-5: 5 wt% sodium hydrogen carbonate aqueous solution C-GB: Water-soluble substance coated beads G-10: Glycerin 10 wt% aqueous solution SL-BR: Hypertech Japan Co., Ltd. Imported commercial product "Slip Buster" SS- 5: Quartz sand No. 5 [made by Northern Japan Industrial Co., Ltd.]

[0048]

EFFECTS OF THE INVENTION According to the present invention, the type of coating film forming material to be used can be obtained without deteriorating coating film properties such as coating film appearance, adhesion and coating strength of the coating film layer to be formed. To produce a non-slip coating layer that is excellent in non-slip properties, especially non-slip properties when wet, and is easy to apply on site, especially suitable for floor finishing applications. You can

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Claims (8)

[Claims] 1. A coating film-forming material which is insoluble or sparingly soluble in water is applied to the surface of a substrate, and the coating film-forming material layer is applied before the coating film-forming material layer is dried or cured. On the surface,
A water-soluble solid substance, a water-soluble liquid substance, an aqueous solution or suspension of a water-soluble solid substance and / or a water-soluble liquid substance, and an aqueous spray material selected from water are sprayed, and the film-forming material layer is dried. Alternatively, a method for producing a non-slip coating layer is characterized in that the aqueous dispersion material is removed after curing and a coating layer having a large number of fine holes is formed on the surface. 2. The water-soluble solid substance which is sprayed on the surface of the coating film forming material layer as an aqueous spraying material has an average particle size of 1000.
The method for producing a non-slip coating layer according to claim 1, which has a thickness of not more than μm. 3. The method for producing a non-slip coating layer according to claim 1, wherein the average diameter of the micropores formed in the coating layer after removing the aqueous spraying material is 1 μm or more. 4. The number of micropores formed in the coating film layer after removing the aqueous spraying material is 20 / cm ² or more.
4. The method for producing a non-slip coating layer according to any one of 3 to 3. 5. The method for producing a non-slip coating layer according to claim 1, wherein the area ratio of the fine holes formed in the coating layer after removing the aqueous spraying material is 3% or more. . 6. The aqueous spraying material is either a water-soluble solid substance, a water-soluble liquid substance, and an aqueous solution or suspension of a water-soluble solid substance and / or a water-soluble liquid substance, and this aqueous spraying with water. The method for producing a non-slip coating layer according to claim 1, wherein the material is eluted and removed. 7. The method for producing a non-slip coating layer according to claim 1, wherein the base material is a floor finishing material. 8. A floor finish made by the method of claim 7.