WO2022177153A1 - Method for manufacturing floor material with nano-hybrid uv coating layer - Google Patents

Abstract

The present invention relates to a method for manufacturing a floor material having aesthetic appeal, water resistance, durability, chemical resistance, scratch resistance, and contamination resistance while being used to finish the floor of a building, the method comprising the steps of: preparing a floorboard, which is formed in a plate shape to form the basic skeleton of the flooring material; preparing a decorative film, which gives aesthetic appeal through various patterns and colors; preparing a film-typed UV coating film, in which a UV coating layer hybridized with nano-silica is formed on the upper surface such that the UV coating film has scratch resistance and contamination resistance; and binding the decorative film and the UV coating film such that the films are sequentially laminated on each other, and then performing laminating by heat sealing while supplying the bound decorative film and UV coating film above the floorboard, thereby completing the floor material.

Description

Manufacturing method of flooring with nano hybrid UV coating layer

The present invention relates to a method for manufacturing a flooring material having aesthetic, water resistance, durability, chemical resistance, scratch resistance, and stain resistance while being used to finish the floor of a building, and more particularly, it is formed in a plate shape to produce a flooring material. A step of preparing a floorboard to form a basic skeleton, a step of preparing a decorative film that provides an aesthetic feeling with various patterns and colors, and a UV coating layer hybridized with nano silica is formed on the upper surface to have scratch resistance and stain resistance After preparing the UV coating film in the form of a film, and laminating the decorative film and the UV coating film in order of top and bottom, laminating the laminated decorative film and UV coating film by heat sealing while supplying the laminated decorative film and UV coating film to the upper part of the floorboard to a method of manufacturing a flooring material with a nano-hybrid UV coating layer, characterized in that it comprises the step of completing the flooring material.

Recently, in order to upgrade the interior to improve the residential culture and to have a natural wood texture for the entire living space, it is generally used to attach a separate flooring material to the indoor floor to express the wood texture as it is. These flooring materials are divided into reinforced flooring, plywood flooring, and solid wood flooring according to the material.

The reinforced flooring is a flooring using fiberboard, etc. as a base material. It has strong abrasion resistance, durability, and stain resistance, and is easy to maintain, but the texture of wood is somewhat inferior due to the limitation of the patterned paper and melanin laminating of the surface. The reinforced flooring consists of an upper laminate layer, an intermediate base material layer, and a lower layer to block moisture from the bottom. HDF ( It is based on high-density fiberboard, and the surface is reinforced with HPL (high-pressure laminate) or LPL (law-pressure laminate).

In addition, the reinforced flooring can be decorated in various colors or designs depending on the type of decorative paper, but the texture of the wood is somewhat inferior to that of solid wood flooring or plywood flooring due to the limitation of the patterned paper and melanin laminating of the surface.

The wooden flooring is made by processing natural wood as it is, and is divided into parquet and plank flooring according to the shape. A wooden floor with a width of 18 to 68 mm and a thickness of 8 to 25 mm is called a parquet, and a width of 75 to Plank-type flooring with a thickness of 175 mm and thickness of 8 to 22 mm is called a plank flooring.

These hardwood floors are recognized as the best flooring materials because they use solid wood as they are and have excellent texture. Hardwoods such as maple, birch, and ash are mainly used as materials, but they are expensive and expensive because most of the wood is imported. , It has poor abrasion resistance, so the surface is easily damaged, there is a lot of noise and there is a risk of discoloration and fading, and there are problems in that it is inconvenient to manage because it has low thermal conductivity compared to other floors and needs to be varnished periodically.

On the other hand, plywood flooring uses plywood as a base material and has veneer on the surface. By applying veneer on the surface, the texture is natural and there is little deformation due to moisture or heat. It has problems such as discoloration and fading.

As a prior art for flooring floors including such reinforced flooring, solid wood flooring, plywood flooring, etc., Korean Patent Publication No. 10-1725863 discloses laminated veneer or MLH (Mixed Light Hardwood) veneer having a thickness of 0.1 to 3 mm; 3 laminated veneers with a thickness of 2-7 mm; HPM sheet; After sequentially stacking, it is manufactured by low temperature hot pressing at a temperature of 50 to 100 ° C and a pressure of 10 to 15 kgf / cm, but the HPM sheet is made of printed gravure paper and a nonwoven fabric or paper or synthetic resin material having a thickness of 0.1 mm to 1 mm. Any one of the fabrics and a laminated veneer having a thickness of 0.2 to 3 mm are sequentially combined, and the HPM sheet is provided with three laminated veneers having a thickness of 2 to 7 mm under the HPM sheet, and a laminated veneer having a thickness of 0.1 to 3 mm is provided under the three veneers. Alternatively, a reinforced flooring made of laminated plywood characterized in that MLH (Mixed Light Hardwood) veneers are sequentially combined has been disclosed.

However, in the flooring for flooring according to the prior art, the moisture rising from the floor permeates according to the temperature difference, and the water permeates into the veneer located at the lower part by the permeated moisture, causing deformation or expansion by blowing in water, etc. Vulnerable to moisture and low scratch resistance of the surface, scratches or cracks occur easily The uneven coating layer was formed due to the unevenness of the surface of the flooring used for flooring itself and the coating unevenness, so there was a problem in that the coating layer was easily peeled off when the floor was in contact with an external object.

The present invention is to improve the conventional problems as described above, and after laminating the decorative film and the UV coating film to have an aesthetic feeling, water resistance, durability, chemical resistance, scratch resistance, and stain resistance in order of top and bottom, and then laminated Provided is a manufacturing method for manufacturing a flooring material by laminating by heat sealing while supplying a decorative film and a UV coating film to the upper part of the floorboard. Aesthetics are improved by decorative film layers with various patterns and colors, and a UV coating film in the form of a film with a UV coating layer hybridized with nano silica is formed on the uppermost layer of the flooring to improve scratch resistance, surface hardness, and stain resistance. Its purpose is to improve the quality of the flooring material.

In order to achieve this object, the method for manufacturing a flooring material with a UV coating layer includes the steps of preparing a floorboard that is formed in a plate shape to form the basic skeleton of the flooring material, and prepares a decorative film providing an aesthetic feeling with various patterns and colors. Preparing a UV coating film in the form of a film in which a UV coating layer in which nano silica is hybridized is formed on the upper surface to have scratch resistance and stain resistance, and laminating the decorative film and the UV coating film vertically After that, the laminated decorative film and UV coating film are supplied to the upper part of the floorboard and laminated by thermal fusion to complete the flooring material.

Another feature of the present invention is that in the step of preparing the floorboard, 80 to 90 parts by weight of stone powder and 10 to 20 parts by weight of a binder are mixed to form the floorboard in order to increase water resistance and durability.

In addition, as another feature of the present invention, the step of preparing the UV coating film includes a base resin manufacturing step made of a urethane acrylate resin, a UV coating solution manufacturing step for preparing a UV coating solution using the base resin, and the base film layer. It is through the step of applying a UV coating solution to the upper surface and curing the UV to form a UV coating layer in which nano silica is hybridized.

In addition, as another feature of the present invention, in the base resin manufacturing step, a polyester polyol prepared by condensation reaction of adipic acid, propylene glycol, diethylene glycol, and 1,6-nucleic acid diol, isophorone diisocyanate, and nano silica are hybrid It consists in using a urethane acrylate resin prepared by mixing 2-hydroxyethyl acrylate as a base resin.

In addition, as another feature of the present invention, the 2-hydroxy ethyl acrylate hybridized with the nano silica includes a step of adsorbing and removing metal ions contained in the acid-based silica sol with a cation exchange resin, the metal ion-removed silica Adding and mixing an organic solvent and a silane coupling agent to the sol for hydrophobic modification, removing moisture from the hydrophobically-modified silica sol and concentrating it, and then surface-treating with a titanate coupling agent, the surface-treated silica sol Mixing with 2-hydroxy ethyl acrylate, 2-hydroxy ethyl acrylate is coated on the surface of the silica sol particles to be prepared through a step of hybridizing.

As described above, according to the present invention, there is provided a method of manufacturing a flooring material in which a floorboard layer, a decorative film layer and a UV coating film layer are laminated, wherein the floorboard layer is prepared by mixing stone powder and a binder in a certain ratio. It can increase water resistance and durability, and can improve aesthetics by decorative film layers with various patterns and colors. A UV coating film layer with a UV coating layer hybridized with nano silica is formed on the top layer of the flooring. Thus, scratch resistance and surface hardness can be improved, so it is possible to manufacture flooring materials with aesthetics, water resistance, durability, chemical resistance, scratch resistance, and stain resistance.

1 is a perspective schematic view showing an exploded state of a flooring material according to the present invention;

<Explanation of code>

1. Flooring material 2. Floor board 3. Fitting projection 4. Fitting groove

5. Sound-absorbing material layer 6. Decorative film 7. UV coating film

Hereinafter, the configuration of the present invention will be described in detail.

The method for manufacturing a flooring material according to the present invention relates to a method for manufacturing a flooring material (1) having aesthetics, water resistance, durability, chemical resistance, scratch resistance, and stain resistance while being used to finish the floor of a building, As shown in Fig. 1, the steps of preparing a floorboard 2 that is formed in a plate shape to form the basic skeleton of the flooring material 1, and preparing a decorative film 6 that provides an aesthetic feeling with various patterns and colors Step, preparing a UV coating film 7 in the form of a film in which a UV coating layer in which nano silica is hybridized is formed on the upper surface to have scratch resistance and stain resistance, and stacking a decorative film and a UV coating film in order of top and bottom After laminating, the laminated decorative film and UV coating film are supplied to the upper part of the floorboard and laminated by thermal fusion to complete the flooring material. Each step will be described in detail below.

1. Steps to prepare the floorboard (2)

In the step of preparing the floorboards 2, the floorboards 2 are formed in a plate shape to form the basic skeleton of the flooring material 1, and the floorboards 2 are fitted with other floorboards to each other. One of the peripheral surfaces of the board 2 has a fitting protrusion 3 protruding and the other side has a fitting groove 4 that is fitted to match the fitting protrusion 3, so that the floorboards 2 are installed. They are designed to be fitted in a plane with each other.

In addition, the floorboard 2 is formed to have a thickness of about 4 to 10 mm, and is formed by mixing 70 to 90 parts by weight of stone dust and 10 to 30 parts by weight of a binder to increase water resistance and durability.

On the other hand, the floorboard 2 has a 1 to 2 mm thick sound absorbing material layer 5 made of IXPE (irradiation crosslinked polyethylene foam) attached to the lower surface thereof, thereby improving the sound absorption of the flooring material 1 to reduce interlayer noise. it is made to do

2. Step of preparing the decorative film (6)

The decorative film 6 prepared through the step of preparing the decorative film 6 provides an aesthetic feeling so that the flooring material 1 has various patterns and colors, but the decorative film 6 is made of synthetic resin such as PVC. Wood grain patterns are printed on the film of the material, giving it a natural wood-like aesthetic.

The decorative film 6 is bonded to the upper surface of the floorboard 2 by lamination treatment by thermal fusion in a state where the UV coating film 7 is laminated on the upper surface in order to provide an aesthetic feeling.

3. Step of preparing the UV coating film (7)

The UV coating film 7 prepared through the step of preparing the UV coating film 7 is coated with a UV coating layer hybridized with nano silica to a certain thickness on the upper surface of the base film layer so as to have scratch resistance and stain resistance. In the form of a film in which the UV coating film 7 is laminated on the upper surface of the decorative film 6, it is bonded to the upper surface of the floorboard 2 by lamination treatment by thermal fusion. By forming the uppermost layer of the flooring 1, it provides scratch resistance and stain resistance.

The step of preparing the UV coating film 7 consists of a step of preparing a base film and a step of forming a UV coating layer in which nano silica is hybridized on the upper surface of the base film.

The base film prepared through the step of preparing the base film is preferably a PVC material having a thickness of 0.08 to 0.5 mm.

In addition, the step of forming the UV coating layer in which the nano silica is hybridized on the upper surface of the base film is a base resin manufacturing step of manufacturing a urethane acrylate resin, which is a base resin, and a UV coating solution manufacturing step of preparing a UV coating solution using the base resin. and a coating/curing step of applying a UV coating solution to the upper surface of the base film layer and UV curing, which will be described in detail step by step.

1) Base resin manufacturing stage

First, the base resin manufacturing step is a polyester polyol (polyesterpolyol), isophorone diisocyanate (Isophorone diisocyanate, IPDI), nano silica hybrid 2-hydroxy ethyl acrylate (2-hydroxy eathylacrylate) and other additives It is a process of manufacturing urethane acrylate resin, which is a base resin, by adding and mixing.

The polyester polyol is to improve the tensile strength, elongation and toughness of the UV coating layer, and 200 to 250 parts by weight of adipic acid, 55 to 75 parts by weight of propylene glycol, and diethylene glycol glycol) 80 to 96 parts by weight and 70 to 90 parts by weight of 1,6-hexanediol. Addition mix.

400 to 520 parts by weight of the polyester polyol prepared as above, 520 to 630 parts by weight of 2-hydroxyethyl acrylate hybridized with 280 to 350 parts by weight of isophorone diisocyanate and nano silica, and a certain amount of a viscosity modifier, an antifoaming agent and a dispersing agent and a reaction catalyst and a slip agent are added and mixed to prepare a base resin, urethane acrylate resin.

On the other hand, the polyester polyol is mixed with 400 to 520 parts by weight based on the total weight of the urethane acrylate resin as the base resin. When the polyester polyol is added in less than 400 parts by weight, the tensile strength, elongation and toughness of the UV coating layer are improved. There is a problem of lowering, and when added in excess of 520 parts by weight, there is a problem that the UV coating layer is nitrided.

The isophorone diisocyanate is an alicyclic diisocyanate compound to improve the tensile strength, elongation and toughness of the UV coating layer, and 280 to 350 parts by weight are added and mixed with respect to the total weight of the urethane acrylate resin as the base resin. When diisocyanate is added in an amount of less than 280 parts by weight, the urethane acrylate resin is not synthesized due to lack of a reactor, and when it is added in excess of 350 parts by weight, there is a problem that the storage stability of the urethane acrylate resin is inhibited.

The nano silica hybridized 2-hydroxy ethyl acrylate is an aliphatic acrylate compound to improve scratch resistance, surface hardness, and UV curability of the UV coating layer, based on the total weight of the urethane acrylate resin as the base resin. ~ 630 parts by weight are added and mixed, and when the amount of 2-hydroxyethyl acrylate hybridized with nano silica is added in less than 520 parts by weight, there is a problem that scratch resistance and durability are deteriorated, and when added in excess of 630 parts by weight, the base film There is a problem that the UV coating layer is easily peeled off from the layer.

In addition, the nano silica hybridized 2-hydroxy ethyl acrylate,

adsorbing and removing metal ions contained in the acidic silica sol with a cation exchange resin;

Adding and mixing an organic solvent and a silane coupling agent to the silica sol from which metal ions have been removed to make it hydrophobic;

After concentration by removing moisture from the hydrophobically modified silica sol, surface treatment with a titanate coupling agent;

It is prepared through a step of mixing the surface-treated silica sol with 2-hydroxy ethyl acrylate so that the 2-hydroxy ethyl acrylate is coated on the surface of the silica sol particles to hybridize,

The nano silica hybridized 2-hydroxy ethyl acrylate generates an effect of improving the scratch resistance and durability of the UV coating layer by the silica component.

In particular, as for the acidic silica sol, nanoparticles having an average diameter of 10 to 20 nm are used.

In the manufacturing process of the urethane acrylate resin, a certain amount of a viscosity modifier, an antifoaming agent, a dispersing agent, a reaction catalyst, and a slip agent are added and mixed as other additives.

The viscosity modifier lowers the viscosity during the reaction of the polyester polyol and isophorone diisocyanate to activate the stirring and reaction while improving the tensile strength, elongation and hardness of the UV coating layer and exhibiting UV curability. In the present invention, the viscosity modifier As 1,6-hexanediol diacrylate (1,6 hexanediol diacrylate) is added and mixed in an amount of 100 to 150 parts by weight based on the total weight of the urethane acrylate resin, and when the viscosity modifier is added in an amount of less than 100 parts by weight, the viscosity is too high High isocyanate modification reaction or acrylate modification reaction is not performed properly, and the elongation and toughness of the UV coating layer are reduced.

The antifoaming agent is used to remove bubbles generated during stirring and reaction, and 0.007 to 0.01 parts by weight is added based on the total weight of the urethane acrylate resin, and the dispersant is 0.3 to 0.6 based on the total weight of the urethane acrylate resin. parts by weight are added.

As the isocyanate reaction catalyst, dibutyltindilaurate is added and mixed in an amount of 0.2 to 0.4 parts by weight based on the total weight of the urethane acrylate resin.

The slip agent is for improving the stain resistance of the UV coating layer, and 0.4 to 0.6 parts by weight of silicone acrylate is added and mixed as a surface conditioner based on the total weight of the urethane acrylate resin.

In addition, in the manufacturing process of the urethane acrylate resin, 4 to 6 parts by weight of an organic solvent such as methanol is added to remove unreacted residual isocyanate, thereby stabilizing the urethane acrylate resin.

The specific manufacturing process of the urethane acrylate resin as the base resin is as follows.

First, in a reaction vessel, 200 to 250 parts by weight of adipic acid, 55 to 75 parts by weight of propylene glycol, 80 to 96 parts by weight of diethylene glycol, 70 to 90 parts by weight of 1,6-nucleic acid diol, and 0.3 to polyester polyol reaction catalyst Add 0.6 parts by weight, heat at 140 to 150° C. for 1 to 2 hours, then increase the temperature to 200 to 220° C., heat for 4 to 6 hours, and dehydrate at 110 to 130° C. for 1.5 to 2.5 hours to convert the polyester polyol into a condensation reaction. will be manufactured

Next, after adding 100 to 150 parts by weight of 1,6-nucleic acid diol diacrylate as a viscosity modifier to 400 to 520 parts by weight of a polyester polyol at room temperature, 280 to 350 parts by weight of isophorone diisocyanate and 0.007 to 0.01 parts by weight of an antifoaming agent and 0.3 to 0.6 parts by weight of a dispersant are added and mixed with stirring, and 0.2 to 0.4 parts by weight of dibutyltin dilaurate as an isocyanate reaction catalyst is added to perform an isocyanate modification reaction for 1.5 to 2.5 hours, followed by 2-hydroxyethyl hybridized with nano silica 520 to 630 parts by weight of acrylate, 0.4 to 0.6 parts by weight of silicone acrylate as a surface conditioner, and 4 to 6 parts by weight of methanol as an organic solvent are added and mixed to undergo an acrylate modification reaction for 1 to 2 hours to prepare a urethane acrylate resin. do.

The prepared urethane acrylate resin is used as a base resin for the UV coating layer.

2) UV coating solution manufacturing step

A certain amount of a viscosity modifier, an antifoaming agent, a dispersing agent, a matting agent, a UV initiator, a slip agent, and a leveling agent is added to the urethane acrylate resin, which is the base resin produced through the base resin manufacturing step, and mixed with a UV coating solution. will be manufactured

The UV coating solution includes 450 to 550 parts by weight of a urethane acrylate resin as a base resin, 160 to 200 parts by weight of 1,6-nucleic acid diol diacrylate as a viscosity modifier, 5 to 10 parts by weight of an antifoaming agent, and 4 to 8 parts by weight of a dispersant Part, 75 to 95 parts by weight of a matting agent for removing surface gloss, 70 to 90 parts by weight of a UV initiator for UV curing, and 5 to 9 parts by weight of silicone acrylate as a surface conditioner for improving the stain resistance of the surface , is prepared by adding and mixing 3 to 5 parts by weight of a smoothing additive to improve the smoothness of the UV coating solution.

In addition, if necessary, 30 to 40 parts by weight of polyethylene glycol diacrylate may be added and mixed in the UV coating solution to improve the toughness of the UV coating layer.

3) Application/curing step

A UV coating solution prepared to a thickness of approximately 10 to 30 μm is applied to the upper surface of the base film made of PVC material, and UV cured by irradiating UV rays to form a UV coating layer in which nano silica is hybridized.

4. Steps to complete the flooring (1)

After preparing the floorboard 2, the decorative film 6, and the UV coating film 7 as described above, laminate the decorative film and the UV coating film up and down in order (stacking so that the UV coating film is located on the upper side of the decorative film). After that, the laminated decorative film and UV coating film are supplied to the upper part of the floorboard and laminated by thermal fusion, so that the decorative film 6 and the UV coating film 7 are sequentially and integrally laminated on the upper part of the floorboard 2 The attached flooring material (1) is completed.

As described above, a prototype of the flooring material (1) with a nano-hybrid UV coating layer formed according to the manufacturing method of the present invention was manufactured, and water resistance, chemical resistance, heat resistance, stain resistance, abrasion resistance, and scratch resistance were respectively measured, but each test Each was measured using three identical prototypes, and each test was commissioned by the Korea Institute of Construction and Living Environment.

(1) Water resistance test

The moisture content was obtained by measuring the weight of each prototype before drying and after drying for 24 hours.

(2) Chemical resistance test

Each prototype was immersed in 5% acetic acid for 6 hours, washed with water, dried for 24 hours, and tested for acid resistance by observing deformation. Each prototype was immersed in 1% sodium carbonate for 6 hours and then washed with water. The alkali resistance was tested by observing the deformation after drying for 24 hours, and each prototype was immersed in a conventional thinner for 6 hours, washed with water, and then dried for 24 hours to observe the deformation to test the thinner resistance.

(3) Heat resistance test

The heat resistance was tested by repeating the process of placing each prototype in a heating container, maintaining it at 80±13° C. for 2 hours, and then cooling it at room temperature for 2 hours four times.

(4) stain resistance test

After 10 mm of black, red, and blue inks and crayons were painted on the surface of each prototype, after 4 hours, the surface was wiped with a wet cloth and visually observed whether the ink remained on the surface.

(5) abrasion resistance test

The surface abrasiveness of each prototype was measured using a Taber's Abration Resistance Test.

(6) scratch resistance

For each prototype, a constant load was applied to the needle using a Clemens scratch hardness tester, and the minimum load at which a scratch or wound occurred on the coating surface was measured while gradually increasing the load.

(7) Test results

Test Items		Test result	note
water resistance	moisture content 1	0.4%
	moisture content 2	0.4%
	moisture content 3	0.5%
	Absorption Thickness Expansion 1	0.2%
	Absorption Thickness Expansion Rate 2	0.3%
	Absorption thickness expansion rate 3	0.2%
chemical resistance	acid resistance1	nothing strange
	acid resistance 2	nothing strange
	acid resistance3	nothing strange
	alkali resistance 1	nothing strange
	alkali resistance 2	nothing strange
	alkali resistance3	nothing strange
	Synergy 1	nothing strange
	Synergy 2	nothing strange
	Synergy 3	nothing strange
heat resistance	heat resistance1	nothing strange
	heat resistance2	nothing strange
	heat resistance3	nothing strange
stain resistance	Pollution resistance1	nothing strange
	Pollution resistance2	nothing strange
	Pollution resistance3	nothing strange
wear resistance	wear resistance1	nothing strange	wear value = 0 wear = 0
	wear resistance2	nothing strange
	wear resistance3	nothing strange
scratch resistance	scratch resistance 1	3N
	scratch resistance 2	3N
	scratch resistance 3	3N

As shown in the test results according to Table 1 above, it was found that the flooring material 1 manufactured according to the manufacturing method of the present invention had an average moisture content of 0.43% and an absorption thickness expansion rate of 0.23%, which showed excellent water resistance due to low moisture content and absorption thickness expansion rate. It can be seen that, as a result of the acid resistance, alkali resistance, and thinner resistance test results, no abnormality occurs in the prototype, so it can be seen that the chemical resistance is excellent.

In addition, the test results of heat resistance and stain resistance also show that there is no abnormality in the prototype, so heat resistance and stain resistance are excellent. It can be seen that the UV coating layer hybridized with nano silica forming the uppermost surface layer of the flooring material 1 of

Although the embodiment of the present invention has been described above, the scope of the present invention is not limited thereto, and it is easily changed from the embodiment of the present invention by a person skilled in the art to which the present invention belongs and recognized as equivalent. including all changes and modifications to the scope of

As described above, according to the present invention, there is provided a method of manufacturing a flooring material in which a floorboard layer, a decorative film layer and a UV coating film layer are laminated, wherein the floorboard layer is prepared by mixing stone powder and a binder in a certain ratio. It can increase water resistance and durability, and can improve aesthetics by decorative film layers with various patterns and colors. A UV coating film layer with a UV coating layer hybridized with nano silica is formed on the top layer of the flooring. As it can improve scratch resistance and surface hardness, it has the effect of manufacturing flooring with aesthetics, water resistance, durability, chemical resistance, scratch resistance, and stain resistance, and thus has high industrial applicability.

Claims (7)

1. In the method of manufacturing a flooring material having a UV coating layer,

   preparing a floorboard (2) formed in a plate shape to form a basic skeleton of the flooring material (1);

   A step of preparing a decorative film (6) that provides an aesthetic feeling with various patterns and colors;

   Preparing a UV coating film 7 in the form of a film having a UV coating layer hybridized with nano silica on the upper surface to have scratch resistance and stain resistance;

   After laminating the decorative film and the UV coating film in order of top and bottom, laminating the laminated decorative film and the UV coating film by thermal fusion while supplying the laminated decorative film and UV coating film to the upper part of the floorboard to complete the flooring, characterized in that A method of manufacturing a flooring material with a nano-hybrid UV coating layer formed thereon.
2. According to claim 1,

   In the step of preparing the floorboard layer 2, the floorboard 2

   A method of manufacturing a flooring material with a nano-hybrid UV coating layer, characterized in that it is formed by mixing 70 to 90 parts by weight of stone powder and 10 to 30 parts by weight of a binder.
3. The method of claim 1,

   The step of preparing the UV coating film (7),

   Including the steps of preparing a base film and forming a UV coating layer in which nano silica is hybridized on the upper surface of the base film,

   The step of forming a UV coating layer in which nano silica is hybridized on the upper surface of the base film is,

   A base resin manufacturing step of manufacturing a urethane acrylate resin, which is a base resin,

   A UV coating solution manufacturing step of preparing a UV coating solution using a base resin,

   A method of manufacturing a flooring material with a nano-hybrid UV coating layer, comprising a coating/curing step of applying a UV coating solution to the upper surface of the base film layer and UV curing.
4. 4. The method of claim 3,

   The base resin manufacturing step,

   400 to 520 parts by weight of polyester polyol, 280 to 350 parts by weight of isophorone diisocyanate, 520 to 630 parts by weight of 2-hydroxyethyl acrylate hybridized with nano silica, a certain amount of viscosity modifier, antifoaming agent, dispersing agent, reaction catalyst and surface A method for producing a flooring material with a nano-hybrid UV coating layer, characterized in that a urethane acrylate resin, which is a base resin, is prepared by adding and mixing a slip agent.
5. 5. The method of claim 4,

   The polyester polyol is

   200 to 250 parts by weight of adipic acid, 55 to 75 parts by weight of propylene glycol, 80 to 96 parts by weight of diethylene glycol, and 1,6-hexanediol (1,6-hexanediol) ) A method for producing a flooring material with a nano-hybrid UV coating layer, characterized in that it is prepared by condensation reaction of 70 to 90 parts by weight.
6. 6. The method of claim 4 or 5,

   The nano silica hybridized 2-hydroxy ethyl acrylate,

   adsorbing and removing metal ions contained in the acidic silica sol with a cation exchange resin;

   Adding and mixing an organic solvent and a silane coupling agent to the silica sol from which metal ions have been removed to make it hydrophobic;

   After concentration by removing moisture from the hydrophobically modified silica sol, surface treatment with a titanate coupling agent;

   A nano-hybrid UV coating layer is formed by mixing the surface-treated silica sol with 2-hydroxy ethyl acrylate to coat the surface of the silica sol particles with 2-hydroxy ethyl acrylate to hybridize. A method for manufacturing flooring.
7. 4. The method of claim 3,

   The UV coating solution manufacturing step,

   450 to 550 parts by weight of a urethane acrylate resin as a base resin, 160 to 200 parts by weight of 1,6-nucleic acid diol diacrylate as a viscosity modifier, 5 to 10 parts by weight of an antifoaming agent, 4 to 8 parts by weight of a dispersant, and matting 75 to 95 parts by weight, 70 to 90 parts by weight of UV initiator, 5 to 9 parts by weight of silicone acrylate as a surface conditioning agent, and 3 to 5 parts by weight of a smoothness additive to prepare a UV coating solution by adding and mixing A method of manufacturing a flooring material having a hybrid UV coating layer formed thereon.

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