KR101978431B1 - a wooden floor with UV couting and a manufacturing method of thereof - Google Patents

Abstract

The present invention relates to a floor board which aims to finish the floor of a building. According to an embodiment of the present invention, the decorated wood-based UV coating floor board comprises: a plurality of floor board layers which are formed in a plate shape, have an inserting structure on the circumference thereof for the plurality of boards to be inserted into one another, and are treated to be waterproof by methylene diphenyl diisocyanate; a property reinforcing layer which is positioned on the top surface of the floor board layer in order to reinforce strength of the floor board layer; a surface decorating layer which is positioned on the top surface of the property reinforcing layer and has a pattern for aesthetics formed thereon; a surface protecting layer which is positioned on the top surface of the surface decorating layer in order to protect the surface decorating layer, and includes aluminum oxide in order to increase hardness; and a UV coating layer which is positioned on the bottom surface of the floor board layer in order to prevent deformation due to moisture on the floor board layer, and is hardened by ultraviolet rays in order to minimize thermal deformation. Therefore, the decorated wood-based UV coating floor board can improve water resistance and moisture resistance, and can minimize occurrence of deformation due to heat.

Description

[0001] The present invention relates to a wood flooring with UV coating and a manufacturing method thereof,

The present invention relates to a floorboard for finishing the floor of a building.

Generally, a floorboard is installed on the floor of a building to finish the floor, but the floorboard is damaged easily, and a floorboard, which is called a reinforced floorboard, is recently installed due to limitations of interior aesthetics.

The reinforced floor is formed in such a form that a plurality of reinforced floors in a fragmented form are assembled to each other in the form of a pattern having a wooden texture on the outer surface and a floorboard formed by connecting actual wood.

These reinforced floors give an interior aesthetic like a floorboard, but they are easily damaged by impact.

In order to solve this problem, a "reinforced flooring made of three ply plywood" of Korean Registered Patent No. 10-1725863 (published on Apr. 12, 2017) has been disclosed.

The above-described conventional three-ply laminated flooring is a laminated veneer or MLH (Mixed Light Hardwood) veneer having a thickness of 0.1 to 3 mm; Three veneers stacked with a thickness of 2 to 7 mm; HPM sheet; Followed by low-temperature coiling at a temperature of 50 to 100 占 폚 and a pressure of 10 to 15 kgf / cm.

Such conventional three-ply reinforced flooring can prevent numerical deformation such as shrinkage and expansion due to heat as well as improve abrasion resistance, impact resistance, fade resistance, cold resistance, durability and heat resistance.

However, in the case of the conventional three-ply reinforced flooring, the water comes in from the floor due to the temperature difference, and the water permeates through the flooring between the reinforced flooring, There is a problem in that it is vulnerable to moisture such as blowing and swelling.

The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a floorboard UV coated floorboard which can minimize the deformation due to moisture generated in the floor, And a method for producing the same.

According to an aspect of the present invention, there is provided a wood-based UV-coated floorboard comprising: a floor board layer formed in a plate shape and having a circumferential fitting structure for fitting a plurality of the floorboards and waterproofed by methylene diphenyl diisocyanate; A flooring board layer disposed on an upper surface of the flooring board layer to reinforce the strength of the flooring board layer; a surface decoration layer positioned on the upper surface of the property enhancement layer and having a pattern for aesthetics; And a UV protective coating layer disposed on the bottom surface of the floor board layer to prevent deformation of the floor board layer due to moisture and to be cured in ultraviolet rays so as to minimize thermal deformation, .

The surface decorating layer may include a patterned paper having a pattern and a melamine impregnated paper impregnated with melamine for reinforcing the rigidity of the pattern paper by being adhered to the bottom surface of the paper.

The waterproofing treatment of the floor board layer may be performed by impregnating the floor board layer with the methylene diphenyl diisocyanate, mixing the floor board layer with the material for forming the floor board layer, or applying the water to the outer surface of the floor board layer.

The surface protection layer may include a photo-curable material to which the aluminum oxide powder is mixed, and may be formed by applying the composition to the surface decoration layer and curing the composition by light.

The floor board layer is formed with a fitting protrusion protruding from one of the opposite rim portions of the floor board layer and a fitting groove into which the fitting protrusion is fitted to the other floor rim so that a plurality of the floor board layers are coupled to each other .

In the method for manufacturing a stucco wood UV coated flooring board according to an embodiment of the present invention, the method includes the steps of: attaching the physical property reinforcing layer to the upper surface of the floor board layer; cementing the surface decorative layer on the upper surface of the physical property reinforcing layer; A step of forming the surface protection layer on the top surface of the surface decoration layer, cutting the semi-finished product to which the physical property reinforcing layer, the surface decoration layer and the surface protection layer are bonded, Coating the bottom surface of the board layer with an ultraviolet curing paint, irradiating UV to form a UV coating layer, and processing the ultraviolet curing layer to have a fitting structure that interleaves the periphery of the semi-finished product formed with the UV coating layer.

And a step of preparing the surface decorating layer prior to the step of adhering the surface decorating layer to the upper surface of the physical property enhancing layer, wherein the step of manufacturing the surface decorating layer comprises the step of adhering the melamine- And pressing and adhering the melamine impregnated paper to which the pattern paper is adhered only by the pressure of the press without heating.

Wherein the step of forming the surface protective layer comprises the steps of: mixing aluminum oxide with a photo-curable material; applying a photocurable material mixed with the aluminum oxide to the surface decorating layer; And irradiating light to cure.

According to the present invention, not only the floor board layer is waterproofed by methylene diphenyl diisocyanate but also a UV coating layer is formed on the bottom surface of the floor board layer to improve the water resistance and moisture resistance to absorb moisture and deformation by moisture The deformation due to the expansion can be minimized.

Further, a UV coating layer is formed on the bottom surface of the floor board layer, so that the UV board layer can suppress the deformation of the floor board layer.

In addition, the surface protective layer may contain aluminum oxide to improve the hardness, and the melamine-impregnated paper may adhere to the panel and melamine paper to improve the durability.

In addition, the surface protective layer is formed of a photo-curable material, and the UV coating layer is also formed of an ultraviolet curable material, so that the thermal deformation of the floor board layer is minimized by curing by light without heating when forming the surface protective layer and the UV coating layer .

In addition, it is possible to minimize the thermal deformation of the floor board layer by not only cementing by heat at the time of cementing but also by applying the adhesive in a state in which heat is not applied, and then adhering only by the pressure of the press.

In addition, the UV-coded layer can prevent the semi-finished product from slipping during processing of the fitting structure.

FIG. 1 is an exploded perspective view of a wood veneer UV coated floorboard according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view showing a stained wood UV coating floorboard according to an embodiment of the present invention.
3 is a flowchart schematically showing a method of manufacturing a stucco wood UV coated floorboard according to an embodiment of the present invention.
4 is a flowchart schematically showing a step of forming a surface decorating layer in a method of manufacturing a stucco wood UV coating floorboard according to an embodiment of the present invention.
FIG. 5 is a flowchart schematically showing a step of forming a surface protection layer in a method of manufacturing a stucco wood UV coated floorboard according to an embodiment of the present invention.
6 is a flowchart schematically illustrating a step of forming a UV coating layer in a method of manufacturing a stained wood UV coating floorboard according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a stained wood UV coated floorboard according to an embodiment of the present invention may include a floor board layer 100.

The floor board layer 100 may be formed in the shape of a long plate, and the floor board layer 100 may include a plurality of floor board layers 100, The floor board layer 100 may have a fitting structure around the periphery of the floor board layer 100.

For example, in the fitting structure formed on the floor board layer 100, the fitting protrusions 110 are formed on one of the opposed rims of the floor board layer 100, and the fitting grooves 130 are formed on the other rim So that the fitting protrusions 110 are fitted into the fitting grooves 130 and are coupled to each other.

The floor board layer 100 may be any one of a magnesium plate, a laminated board, a WPC (Wood Plastic Composite) board and a SPC (Stone Plastic Composite) board. The floorboard layer 100 may have a thickness of 5 to 10 mm And can be waterproofed to have water resistance and moisture resistance.

Here, when waterproofing the floor board layer 100, methylene diphenyl diisocyanate may be mixed with the raw material for forming the floor board layer 100 or may be applied to the outer surface of the floor board layer 100, The layer 100 may be impregnated with water.

For example, when the floor board layer 100 is a laminated board, it is impregnated with methylene diphenyl diisocyanate to be waterproofed. When the floor board layer 100 is a WPC board, methylene diphenyl diisocyanate is mixed with an adhesive for mutual adhesion of wood chips, The waterproofing treatment can be carried out in the form of coating methylene diphenyl diisocyanate on the outer surface.

Methylene diphenyl diisocyanate is a material excellent in water resistance and can be composed of an aromatic diisocyanate chemical substance.

The methylene diphenyl diisocyanate is largely divided into MDI monomer and 4ploymeric MDI. The MDI monomer is composed of three isomers of 2,2'-MDI, 2-4'-MDI and 4-4'-MDI, '-Isomers are referred to as pure MDI or Monomeric MDI, and Ploymeric MDI may be a mixture of monomeric MDI and higher molecular weight polynuclear methylene diphenyl diisocyanate.

The floor board layer 100 is formed on the bottom of the floor board layer 100 so that the floor board layer 100 is easily bent to closely contact with the floor in accordance with the curvature of the floor, A plurality of groove grooves 150 may be formed in a direction orthogonal to the longitudinal direction of the grooves.

In the present invention, any one of Monomeric MDI and Polymeric MDI can be used.

As shown in FIGS. 1 and 2, the stained wood UV-coated floorboard according to the embodiment of the present invention may include a property strengthening layer 200.

The physical property reinforcing layer 200 reinforces the rigidity of the floor board layer 100 and can easily prevent warpage or warping.

The physical property reinforcing layer 200 may be embodied as a known kraft paper.

The kraft paper is excellent in tensile strength, tear strength, elongation, etc., and is attached to the upper surface of the floor board layer 100 to enhance physical properties such as breakage or breakage due to the characteristics of the floor board layer 100 .

On the other hand, the physical property reinforcing layer 200 may be provided with an adhesive layer on the bottom surface, or may be press-bonded to the upper surface of the floor board layer 100 without being heated after the adhesive is applied.

In this case, when the physical property-adhering layer is adhered to the floor board layer 100 by heating, the floor board layer 100 may be deformed due to heat, so that the physical property enhancing layer 200 may be formed on the floor board layer 100), it is preferable to attach them only by the pressing force of the heat-applied press.

The physical property enhancing layer 200 may be formed to have a thickness of approximately 0.35 mm.

As shown in FIGS. 1 and 2, the stained wood UV coating floorboard according to an embodiment of the present invention may include a surface decorating layer 300.

This surface decorating layer 300 can impart a feeling of aesthetics like a stone or wood of a floorboard.

The surface decorating layer 300 is formed by the impregnation of the pattern paper 310 and the melamine impregnated paper 330 with the pattern paper 310 or the melamine impregnated paper 330 impregnated with the pattern paper 310 and melamine resin And may be configured to be in a cemented state.

The pattern paper 310 may be a pattern printed with a paint, and the pattern paper 310 may be formed in a concavo-convex pattern to improve the three-dimensional effect, or a plurality of the pattern paper 310 may overlap to form a three- It may also be configured to express the texture of the grain or stone.

The melamine impregnated paper 330 is a sheet made of paper or melamine impregnated with melamine in the tributaries. The melamine-impregnated paper 330 is a sheet made of paper or melamine impregnated with melamine, and increases the rigidity and hardness of the surface pattern layer 300, Can be prevented from being easily broken or broken.

Meanwhile, the melamine impregnated paper 330 may be embodied as a high pressure melamine sheet (HPM) 330 impregnated with melamine at a high pressure, and the melamine impregnated paper 330 may contain melamine and formaldehyde as a plasticizer To prepare a melamine paper, and phenol and formaldehyde are stirred with a plasticizer to prepare a phenolic paper.

The melamine-impregnated paper 330 is pressurized by heating the melamine paper and phenol paper in a heated state to produce a melamine impregnated paper 330. The bottom surface of the prepared donmeli- So that they can be polished by a send paper.

On the other hand, the melamine-impregnated paper 330 can be manufactured by applying an adhesive and placing the paper 310 on the paper, and pressing the paper 310 with only the pressure of the press without heating.

Here, in the case where the pattern paper 310 is pressed on the melamine-impregnated paper 330 by the pressure of the press without heating the melamine-impregnated paper 330, the melamine-impregnated paper 330 produced by heat cohesion is deformed by the heat and weakened in strength It is more resistant to heat than the melamine impregnated paper 330 bonded by heat, and can have excellent strength.

On the other hand, the melamine-impregnated paper 330 is not composed only of melamine but because the phenol is adhered, the strength of the melamine can be reinforced by phenol to further improve the durability.

As shown in FIGS. 1 and 2, the stained wood UV coated floorboard according to the embodiment of the present invention may include a surface protection layer 400.

The surface protecting layer 400 may be formed on the upper surface of the surface decorating layer 300 to protect the surface decorating layer 300.

The surface protection layer 400 may be formed of a material having a high hardness and the surface protection layer 400 may be formed on the surface protection layer 400 when the surface protection layer 400 is formed on the surface decoration layer 300, Or may be formed by a photo-curable material to minimize damage to the pattern by heat, or to minimize distortion or deformation of the floor board layer 100 by heat.

The surface protective layer 400 may be formed by mixing aluminum oxide (Al ₂ O ₃ ) with a photo-curing material to have a high hardness, applying the mixture to the surface decoration layer 300, have.

Here, aluminum oxide is a material having a high hardness. When aluminum oxide is included in the surface protective layer 400, the hardness of the surface protective layer 400 is high, and it can have strong characteristics against scratches.

The photocurable material for forming the surface protective layer 400 may be a monomer or oligomer having at least one functional group such as an unsaturated bond group capable of crosslinking reaction or the like and may be prepared by mixing two or more different monomers or oligomers And various additives may be mixed within a range that does not change the hardness such as a light stabilizer, a leveling agent, etc. in addition to the photo-curable material.

The surface protective layer 400 may have a thickness of about 0.35 mm. The surface protective layer 400 may have a surface hardness measured by pencil hardness of 7H or more. The photo-curable material to be constituted may be a material which can be cured according to the wavelength of light of any one of ultraviolet ray, infrared ray and visible ray, and may be embodied as UV curable urethane acrylate which is cured by ultraviolet rays.

As shown in FIGS. 1 and 2, the stained wood UV coated floorboard according to an embodiment of the present invention may include a UV coating layer 500.

The UV coating layer 500 may be formed on the bottom surface of the floor board layer 100. The UV coating layer 500 may improve moisture resistance and water resistance by moisture generated from the floor or water introduced from the top, The board layer 100 can be protected.

Since the floor board layer 100 is vulnerable to moisture, when the moisture is absorbed, the floor board layer 100 is blown by moisture or deformed to replace the floor board layer 100, It is difficult to replace any one of the floorboards because the floorboards 100 are fitted in order from one side to the other side.

Accordingly, the UV coating layer 500 protects the floor board layer 100 with moisture, thereby minimizing the deformation of the floor board layer 100 in accordance with moisture.

On the other hand, the UV coating layer 500 may be formed on the floor board layer 100 in the form of being applied to the bottom surface of the floor board layer 100 with an ultraviolet curable material and irradiated with ultraviolet rays to be cured.

Here, when the UV coating layer 500 is formed of a material to be dried by heat, when heat is applied to form the UV coating layer 500, the floor board layer 100 may be deformed due to heat, The coating layer 500 may be formed of an ultraviolet curable material so that thermal deformation does not occur.

Further, when the UV coating layer 500 is formed of an ultraviolet curable material, the ultraviolet curable material has a faster drying time than the material cured by heat, has a simple advantage of drying facility, and is dried quickly to avoid air pollution.

When the UV coating layer 500 is formed under the floor board layer 100, the adhesion of the UV coating layer 500 to the epoxy adhesive for the construction is high, so that lifting after the construction can be minimized.

On the other hand, a UV-curable material can be mixed with a photopolymerizable polymer or monomer to control the viscosity, and a photopolymerization initiator can be mixed to promote curing. Various additives such as a leveling agent, a defoaming agent, And can be realized with a UV-curable urethane acrylate.

Hereinafter, the operation and effect between the respective components will be described together with the method of manufacturing the stucco wood UV coated floorboard according to the embodiment of the present invention.

As shown in FIG. 3, the coated wood veneer UV coated floorboard according to the embodiment of the present invention is manufactured by first applying an adhesive to the upper surface of the floor board layer 100, then placing the property enhancing layer 200 on the floor board 100, And the physical property reinforcing layer 200 is bonded to the floor board layer 100 by pressurization.

Here, the floor board layer 100 may be previously waterproofed with methylene diphenyl diisocyanate.

The surface decoration layer 300 may be adhered to the physical property enhancing layer 200 by pressing the surface of the physical property enhancing layer 200 with an unpressurized press in a state in which the surface decorating layer 300 is seated after applying the adhesive to the upper surface of the physical property enhancing layer 200 have.

Of course, after the adhesive is applied to the floor board layer 100, the adhesive layer is applied to the physical property reinforcing layer 200 in a state where the physical property reinforcing layer 200 is laid thereon, and then the surface decorating layer 300 is superimposed, The stiffening layer 200 and the surface decorating layer 300 may be cemented to the floor board layer 100.

4, the surface decorating layer 300 may be fabricated prior to cementing to the property enhancing layer 200, and the surface decorating layer 300 may be formed by coalescing the melamine and phenolic materials to form the melamine- And the pattern paper 310 is adhered to the melamine-impregnated paper 330 with an adhesive, and then pressurized with the unheated press to minimize the thermal change of the melamine-impregnated paper 330 due to heat.

5, when the physical property enhancing layer 200 and the surface decorating layer 300 are bonded to the floor board layer 100 by a press, a photocurable material is applied to the surface decorating layer 300 to irradiate light To form a surface protective layer 400, whereby a semi-finished product can be manufactured.

At this time, when the surface protective layer 400 is coated, aluminum oxide may be mixed with the photocurable material so that the hardness is improved.

The semi-finished product in which the surface protection layer 400 is formed on the surface decoration layer 300 in a state where the physical property reinforcing layer 200 and the surface decoration layer 300 are attached to the floor board layer 100 is pre- Cut to size.

6, the UV coating layer 500 is formed on the bottom surface of the cut semi-finished product, that is, on the bottom surface of the floor board layer 100 by applying an ultraviolet curable material and curing by irradiating ultraviolet light.

Here, since the UV coating layer 500 is not cured by heating but is cured by irradiating ultraviolet rays, the UV coating layer 500 can be formed while minimizing the thermal deformation of the floor board layer 100, which is vulnerable to heat.

Groove grooves 150 are formed on the bottom of the semi-finished product in which the UV coating layer 500 is formed and the fitting grooves 130 and the fitting protrusions 110 are opposed to each other so that the plurality of floorboards can be fitted to each other .

When the fitting groove 130 and the fitting protrusion 110 are formed around the semi-finished product, the semi-finished product is cut into the size of the floorboard to be manufactured, and then the fitting protrusion 110 and the fitting groove 130 are formed The protrusions 110 and the fitting grooves 130 are formed opposite to each other in the opposite rims. When machining is completed, the defective products are inspected, and only the acceptable products are shipped out.

In order to demonstrate the effect of the present invention described above, the present inventors conducted the following experiments.

1) Heat resistance test

In order to test the heat resistance, the prototype of the present invention was not deformed for 30 to 1 minute in an indirect heat of a surface temperature of 180 ° C with a distance of 30 cm from the electric heater. The heat exposure at 100 ° C was up to 8 hours, , No deformation occurred.

Also, it was possible to hold the cigarette for more than 10 minutes with the direct return (however, the local gloss was reduced)

Further, no deformation was caused by spilling a water kettle containing water heated to 100 占 폚 or applying high-temperature steam at 100 占 폚 or higher.

2) Cold resistance test

Deformation or cracking did not occur even if the prototype was cooled below -30 ℃.

3) Abrasion resistance test

Diameter 44.4mm Width 12.7mmdml Weight After the abrasion wheel was contacted with the prototype, even if it was rotated 10,000 times or more, there was no problem at all.

4) Impact resistance test

There was no abnormality even when the ball having a mass of 224 g and a diameter of 38.1 mm was freely dropped at 300 mm.

5) Scratch resistance test

There was no abnormality in scratches generated by pressurization of 200 g load per unit area of 1 mm ² .

6) Chemical resistance

- There was no more than 16 hours in the state of dropping 10 g of acetic acid, ammonia water, alcohol, amyl acetate, carbon tetrachloride, butyl acetate, olive oil, paraffin, phenol, gasoline, benzene, soapy water, sugar water and toluene on the surface of the prototype.

- Caustic soda with a concentration of 10% or more, hydrochloric acid with a concentration of 10% or less, oxalic acid, nitric acid, sulfuric acid, phosphoric acid, silver nitrate with a concentration of 1% or more and iodine alcohol had no effect for 10 to 15 minutes.

- A cleaning agent with a concentration of more than 10%, nitric acid, sulfuric acid, phosphoric acid, hydrogen peroxide solution, hypochlorite bleach, potassium permanganate, lemon / strawberry juice, dyes and other abrasives, or acidic or alkaline detergents, There was no effect.

As shown in the above test results, it was found that the present invention was excellent in heat resistance, cold resistance, abrasion resistance, impact resistance, scratch resistance and chemical resistance.

Accordingly, the stucco wood UV coated floorboards manufactured by the method of the present invention can be manufactured by laminating the floorboards by the cold press, 100 is minimized and the occurrence of defects during fabrication can be minimized.

The surface protective layer 400 is also made of a photocurable material so that heat is not applied during the formation of the surface protective layer 400 to minimize thermal deformation, The UV coating layer 500 is formed not by heat, but by irradiating ultraviolet rays, thereby minimizing the deformation caused by the application of heat.

Not only is the floor board layer 100 waterproofed by methylene diphenyl diisocyanate, but also the UV coating layer 500 is located on the bottom surface of the floor board layer 100 to minimize water-induced deformation , Adhesiveness with an adhesive for bonding to the floor can be improved, and workability can be improved.

In addition, aluminum oxide is mixed with the surface protective layer 400 to have a high hardness, so that damage due to external force can be minimized.

In addition, the UV coating layer 500 can prevent the semi-finished product from slipping in the processing equipment during processing of the fitting structure.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And all changes and modifications to the scope of the invention.

100: floor board layer 110:
130: fitting groove 150: groove groove
200: physical property reinforcing layer 300: surface decorative layer
310: pattern paper 330: melamine impregnated paper
400: surface protective layer 500: UV coating layer

Claims (8)

A floor board layer which is formed in a plate shape and has a peripheral fitting structure so that a plurality of the boards are fitted together and is waterproofed by methylene diphenyl diisocyanate,
A physical property reinforcing layer positioned on the upper surface of the floor board layer to reinforce the strength of the floor board layer,
A surface decorative layer disposed on the upper surface of the physical property reinforcing layer and having a pattern for aesthetic appearance,
A surface protection layer disposed on the upper surface of the surface decoration layer to protect the surface decoration layer and increase hardness,
And a UV coating layer positioned on a bottom surface of the floor board layer to prevent deformation of the floor board layer due to moisture and to be cured in ultraviolet rays so as to minimize thermal deformation,
The waterproofing treatment of the floor board layer may be performed by impregnating the floor board layer with the methylene diphenyl diisocyanate or applying the methylene diphenyl diisocyanate to the outer surface of the floor board layer,
Wherein the surface protective layer comprises a photocurable material in which the powder of aluminum oxide is mixed and is formed by applying to the surface decorative layer and curing by light. The method according to claim 1,
The surface decorative layer
A patterned patterned pattern, and
And a melamine impregnated paper impregnated with melamine for reinforcing the rigidity of the pattern paper by being adhered to the bottom of the pattern paper. delete delete The method according to claim 1,
The floor board layer
Wherein the floor board layer is formed with a fitting protrusion protruded in one of the rim portions facing each other and a fitting groove in which the fitting protrusion is fitted is formed in the other rim of the floor board layer so that a plurality of the floor board layers are inserted and joined together. Woody UV coated flooring. A method for manufacturing a stucco wood UV coated floor board according to claim 1,
Attaching the physical reinforcing layer to the upper surface of the floor board layer;
Attaching the surface decorating layer to the upper surface of the physical property enhancing layer;
Forming the surface protection layer on the top surface of the surface decoration layer,
Cutting the semi-finished product to which the physical property reinforcing layer, the surface decorating layer and the surface protecting layer are bonded,
Applying an ultraviolet curing paint on the bottom surface of the floor board layer and irradiating UV to form a UV coating layer, and
And a step of machining the UV coating layer so as to have a fitting structure in which the periphery of the semi-finished product on which the UV coating layer is formed is sandwiched. The method according to claim 6,
And a step of preparing the surface decorating layer before the step of adhering the surface decorating layer to the upper surface of the physical property enhancing layer,
The step of fabricating the surface decorating layer
A step of adhering the melamine impregnated paper to the patterned paper with the pattern by an adhesive, and
And pressurizing and bonding the melamine-impregnated paper to which the fringe paper is adhered, without applying pressure only by the pressure of the press. The method according to claim 6,
The step of forming the surface protection layer
Mixing the aluminum oxide with the photo-curable material,
Applying the photocurable material mixed with the aluminum oxide to the surface decorating layer, and
And irradiating light to the photo-curing material applied to the surface decorating layer to cure the UV-curing UV-coated flooring.

Images