KR100997149B1 - Wood flooring and manufacturing method thereof - Google Patents

Abstract

Flooring material according to the invention comprises a base material layer made of wood and a surface material layer bonded to the upper portion of the base layer, the surface material layer is kraft paper impregnated with phenol resin from below, melamine resin impregnated with melamine Resin-impregnated paper, characterized in that consisting of a transparent protective film is applied to the primer for the adhesion of the melamine resin impregnated paper on the bottom, the prepared surface material can be painted using UV coating through sanding, It has a characteristic that can express natural texture not found in the flooring material which is finished with melamine impregnated paper.
In addition, the flooring material according to the present invention has the advantage of excellent natural texture while enhancing the surface strength of the flooring material.

Description

Flooring flooring and its manufacturing method {WOOD FLOORING AND MANUFACTURING METHOD THEREOF}

The present invention relates to a flooring material, and more particularly, to enhance the surface strength of the flooring material to improve the surface properties such as impact resistance and abrasion resistance, while realizing a variety of patterns of the flooring floor, UV coating ondol flooring It relates to a flooring material with an emphasis on surface texture close to and a manufacturing method thereof.

Conventionally, as shown in FIG. 1, flooring materials in which veneer is coupled to plywood or the like are used as shown in FIG. In such flooring material veneer (2) is obtained by cutting the wood thinly to 0.182mm to 0.5mm thickness using a slicer to obtain a thin veneer, which is based on a plate or wood material such as MDF, HDF, plywood, OSB It is formed by bonding to the surface of the back. At this time, the natural veneer (2) sliced from the solid wood is produced in the form of a sheet and bonded to the plywood (4) or the like as a base material, the coating layer (1) is formed on the upper side is used as a floor covering material.

However, the conventional floorboard material using natural veneer as a surface material as described above has a problem that the veneer 2 is not only relatively expensive, but also when the object is dropped, the veneer 2 on the surface is damaged by being stamped or scratched. In addition, the veneer (2) and the base material layer (4) such as plywood is usually bonded with an adhesive (3). In this case, the veneer (2) is sometimes separated from the plywood (4) due to temperature change. There was a problem.

Therefore, in order to solve such a problem, a composite floor having a high pressure thermosetting resin (HPL) bonded to a plywood instead of veneer has been disclosed.

High pressure thermosetting resin (HPL) is manufactured by laminating and heat-compressing an overlay sheet, a melamine resin-impregnated paper, and a phenol resin-impregnated kraft paper from above.

However, the HPL composite floorboard also has a strong strength that can withstand external impacts compared to the general veneer floorboards, while the surface texture is not provided due to the use of melamine impregnated paper and the surface texture is cold, and It reacts sensitively and has disadvantages such as corner rising after floor construction.

Accordingly, the present invention has been made to solve the above problems, and by using an environmentally friendly protective film instead of the use of melamine impregnated overlay paper, while the abrasion resistance and surface strength of the flooring material is strengthened and variously implement the pattern of the flooring The purpose of the present invention is to provide a high-durability flooring material which can emphasize the surface texture close to the UV coating treatment ondol floor.

Flooring material according to the invention comprises a base material layer made of wood and a surface material layer bonded to the upper portion of the base layer, the surface material layer is kraft paper impregnated with phenol resin from below, melamine resin impregnated with melamine Resin-impregnated paper, characterized in that consisting of a transparent protective film is coated with a primer for adhesion to the melamine resin impregnated paper.

In addition, the upper surface of the protective film is a surface polishing treatment after manufacturing the surface material, characterized in that the UV coating is applied to the upper surface of the polishing protective film is formed UV coating layer.

In addition, the lower surface of the base layer is a heterogeneous functional dimensional reinforcing layer to give functionality as well as homogeneous wood materials in order to impart the functionality required by other adhesives such as dimensional reinforcement and thermal conductivity, ease of construction, removal of cement toxicity, etc. by an adhesive. It is characterized in that it is combined.

In addition, in the method of manufacturing the flooring material, kraft paper produced by impregnating phenolic resin from below, melamine resin impregnated shape paper or thin natural veneer and impregnated melamine resin on the lower surface of which various patterns are printed. To prepare a surface material by laminating a transparent protective film coated with a primer for adhesion to the shape paper (Build-up stage), and cold pressing after hot pressing under high temperature and high pressure conditions (High Pressure Laminate stage for surface material) Hot or cold bonding the surface material prepared in the preparation step to the upper surface of the base material layer made of a wood material (Combination stage), the sanding treatment to improve the coating film adhesion to the upper surface of the transparent protective film after the bonding step, sanding treatment Further comprising the step of forming a UV coating layer by applying a UV paint on the upper surface of the transparent protective film It characterized by that.

In addition, after the bonding stage of the surface material and the base material to provide the same wood materials and functionality to give the functionality required by the other flooring material such as dimensional reinforcement and thermal conductivity, ease of construction, removal of cement toxicity by the adhesive It is characterized in that the heterogeneous functional dimensional reinforcement layer is combined.

As described above, the flooring material according to the present invention has various advantages in that the flooring pattern may be embodied in various ways and the surface texture close to the existing UV coating ondol floor may be improved while the wear resistance and surface strength of the flooring material are enhanced. .

1 is a cross-sectional view showing the structure of a conventional floorboard material,
2 is a cross-sectional view showing the structure of the floor covering according to the present invention.

Hereinafter, with reference to the accompanying drawings of the floor covering according to an embodiment of the present invention in more detail as follows.

2 is a cross-sectional view showing the structure of the floor covering according to the present invention.

Flooring material 100 according to a preferred embodiment of the present invention is a base material layer 10 made of a wood material, the surface material layer 30 is bonded to the upper portion of the base material layer, the dimensions coupled to the lower portion of the base material layer 10 Reinforcement layer 20 is made of a combination.

The base layer 10 made of the wood material is a water-resistant plywood, MDF (Medium Density Fiberboard), HDF (High Density Fiberboard), particle board, resin wood powder mixing board, OSB, lumber, other wood based composite materials Is selected. And, the water-resistant plywood that can be selected as the base layer 10 in the present invention is preferably made of an odd laminated plywood of 5ply or more of 5 ~ 20mm thickness.

Among these materials, HDF is composed of fibrous plates having a specific gravity of 0.7 or more, which is considerably harder than the particle board and more resistant to moisture. Therefore, the impact strength and moisture resistance of the flooring material can be improved. In addition, since HDF can be manufactured on a large scale, it is inexpensive compared to domestic plywood and resin wood mixing boards.

The surface material layer 30 bonded to the upper portion of the base layer 10 is kraft paper 41 produced by impregnating phenol resin from below, melamine resin impregnated shape paper 40 produced by impregnating melamine resin, It is prepared by sequentially laminating a transparent protective film 50 coated with a primer 51 on the lower part in sequence.

The melamine resin impregnated shape paper 40 is to embody various patterns of the flooring material and at the same time to further strengthen the surface strength of the flooring material, and is formed by impregnating the melamine resin in the shape paper printed with various patterns or patterns including the wood of the veneer. do. By forming such a melamine resin impregnated paper 40, it is possible to implement a variety of patterns, including the wood at the same time, and replace the expensive veneer, and further strengthen the surface strength of the flooring compared to the general wood flooring using only natural veneer Impact resistance can be increased.

In addition, as another embodiment of the surface material used in the present invention, natural veneer may be used instead of the melamine resin-impregnated paper. In another embodiment, the surface material is formed by laminating kraft paper 41 and a transparent protective film 50 coated with natural veneer and a primer. Thin natural veneer is for use in high-grade specifications than the melamine resin impregnated paper (40) by using natural veneer, to emphasize the natural feeling more, and is manufactured by impregnating the protective film 50 and phenolic resin The paper 41 makes it possible to make a product that is a strong complement of flooring materials compared to ordinary wood flooring. The thickness of the natural veneer is preferably 0.15 to 2.0 mm.

The transparent protective film 50 is a primer 51 is applied to the lower and laminated on the upper surface of the melamine resin-impregnated shape paper 40 is thermo-compressed with the shape paper 40, the material used therein is thin and transparent PVC (PolyVinyl Chloride), PC (PolyCyclohexylene dimethylene), PE (PolyEthylene), PP (PolyPropylene), PET (PolyEthylene Terephthalate), PETG (Ethylene Glycol-modified PET), PCTG (Cyclohexane dimethanol-modified PETG), PCT-A (Isophthalic acid) acid-modified PCTG (HIPS), HIPS (High Impact PolyStyrene), ABS (Acrylonitrile Butadiene Styrene copolymer), PU (PolyUrethane), SBS (Styrene Butadiene Styrene block copolymer), SEBS (Styrene Ethylene Butylenes Styrene block copolymer), SPS (Syndiotactic PolyStyrene) , SEPS (Styrene Ethylene Propylene Styrene block copolymer), acrylate (Acrylate) is preferably used. It is preferable that the thickness of the transparent protective film 50 is 50-1000 micrometers.

It is preferable to use PU (PolyUrethane), UPE (Unsaturated polyEthylene), Hotmelt-based adhesives, etc. as a primer for reinforcing the adhesion between the transparent protective film and the melamine resin-impregnated paper. desirable.

In addition, the transparent protective film used on the surface includes the use of a transparent color protective film by adding pigments and dyes for free rendering of color.

In addition, UV paint is applied on the transparent protective film 50 to form a UV coating layer 60. And, before the UV coating is applied to the upper surface of the transparent protective film is sanded to improve the coating film adhesion, the sanding process is made of a sanding of 300 ~ 600 mesh of the level of the wear of the surface film is not made by the polishing machine. In the case of the conventional thermosetting resin impregnated sheet, it is difficult to apply UV paint on the surface due to the characteristics of the material, but in the present invention, a protective film is laminated on the upper surface of the melamine resin impregnated paper so that UV paint can be applied.

In addition, pigments and dyes may be added to the UV paint as well as the method of using a transparent color film to produce a variety of colors.

The functional dimensional reinforcement layer 20 is bonded to the lower surface of the base layer 10 by an adhesive to form a symmetric balance with the surface material around the base layer to prevent the flooring from being easily changed by temperature or pressure changes. In order to impart various functionalities, in the present embodiment, as well as homogeneous materials, such as wood materials, it may be selected from a heterogeneous plastic, metal, minerals, cardboard, paper, synthetic resin and the like other than the wood materials.

At this time, the materials used may be a thermally conductive metal material (for example, a thin aluminum metal material) or a thermally conductive composite material to reduce thermal energy transmitted from a heating pipe buried beneath the flooring material as well as a dimensional reinforcement. In addition, it is possible to increase the duration of heat by using minerals such as silica, alumina, coal, and the like, and non-woody heterogeneous materials having eco-friendly functional thermal conductivity, or to impart eco-friendly functionality by using ocher emitting far infrared rays. In addition, it is selected to give a variety of functionality required as a flooring material, such as materials for ease of construction.

Particularly in the case of synthetic resin and paper, 5-30% of charcoal, green tea, wood flour, and functional minerals can be added to impart functionality to impart functionality.

As described above, the transparent protective film 50 is adhered to the upper side of the melamine resin impregnated paper 40, thereby preventing the surface from being scratched or scratched even when the object falls on the flooring material compared to the conventional HPL, which is weak in surface impact. And, there is an advantage that can mitigate the floor impact. In addition, in the case of the conventional thermosetting resin impregnated sheet, it is difficult to apply UV paint on the surface due to the characteristics of the material, in the present invention, the protective film 50 is laminated on the upper surface of the melamine resin impregnated paper 40, which enables the application of UV paint. Do.

Hereinafter, the manufacturing method of the flooring material of this invention which has the above structures is demonstrated.

First, the kraft paper 41 and the melamine resin impregnated paper 40 (or thin natural veneer) and the transparent protective film 50 coated with the primer 51 on the lower part were sequentially laminated from the bottom, and then heat / Cold bonding is performed to prepare the surface material 30.

The surface material 30 thus prepared is laminated on the upper surface of the base material layer 10 made of wood, and then the back surface material which can achieve structural symmetry with the surface material 30 on the upper surface is laminated on the lower surface of the base material layer 10. As the backing material, the above-described functional dimensional reinforcing layer 20 is used. At this time, the surface material 30 and the back surface material of the upper and lower parts of the base material layer 10 are integrated using an adhesive agent. As the adhesive used, thermosetting resins such as melamine resins and phenol resins, thermoplastic adhesives such as PVAc and vinyl adhesives and urethane adhesives, and room temperature curing adhesives are mainly used.

Bonding work is done under the pressure condition of 5 ~ 30kgf / ㎠ using a press. When using thermosetting resin as an adhesive, thermocompression bonding is carried out at a temperature of 130 ~ 180 ℃ and cold bonding for thermoplastic resin and room temperature curing adhesive. Adhesion in the manner of slowly depressurizing is used.

Then, in order to improve the coating film adhesion on the upper surface of the transparent protective film 50, the sanding treatment of 300 to 600 mesh at a level where the wear of the surface film is not made, and then UV coating is applied to the UV coating layer 60 To form.

As mentioned above, although this invention was demonstrated with reference to the preferred embodiment, this invention is not limited to the above-mentioned specific preferable embodiment, In the technical field to which this invention pertains without deviating from the summary of this invention claimed in a claim. Various modifications can be made by those skilled in the art, and such changes are within the scope of the claims.

** Description of the symbols for the main parts of the drawings **
10: substrate layer 20: dimensional reinforcement layer
30: surface layer 40: melamine resin impregnated paper
50: transparent protective film 60: UV coating layer

Claims (13)

It comprises a base material layer made of a wood material and a surface material layer bonded to the upper portion of the base material layer,
The surface material layer is a transparent protective film to which the primer is applied to reinforce the adhesive strength of the kraft paper impregnated with phenolic resin, the melamine resin impregnated shape paper impregnated with melamine resin, and the melamine resin impregnated shape paper at the bottom. Flooring made up. delete The method of claim 1,
The base layer is a flooring material consisting of 5ply or more odd-ply laminated plywood or HDF (high density fiber board) with a specific gravity of 0.7 or more. The method of claim 1,
Sanding is applied to the top surface of the transparent protective film, the floor coating material characterized in that the UV coating is applied to the top surface of the sanded protective film to form a UV coating layer. The method of claim 4, wherein
Flooring material, characterized in that the functional dimensional reinforcement layer is bonded to the lower surface of the base layer by an adhesive. The method of claim 5,
The functional dimensional reinforcement layer is a flooring material, characterized in that made of a metal material with excellent thermal conductivity for energy saving. The method of claim 5,
The functional dimensional reinforcing layer is a flooring material, characterized in that made of non-wood foreign material having an environmentally friendly functional thermal conductivity. In the manufacturing method of the flooring material,
Kraft paper made by impregnating phenolic resin from below, melamine resin impregnated shape paper impregnated with melamine resin on paper with various patterns printed thereon, and transparent primer coated with melamine resin impregnated paper on the bottom Preparing a surface material by laminating and thermocompressing a protective film;
Laminating the surface material prepared in the preparation step on the upper surface of the base material layer made of wood and the method of manufacturing the flooring material comprising hot pressing or hot cold pressing. delete The method of claim 8,
Sanding the upper surface of the transparent protective film to improve the coating film adhesion, and further comprising the step of forming a UV coating layer by applying a UV coating on the upper surface of the sanded transparent protective film. The method of claim 10,
Bonding the functional dimension reinforcing layer by the adhesive on the lower surface of the base layer further comprising the flooring manufacturing method. The method of claim 11,
The functional dimensional reinforcing layer is a manufacturing method of the flooring material, characterized in that made of a metal material with excellent thermal conductivity for energy saving. The method of claim 11,
The functional dimensional reinforcing layer is a manufacturing method of the flooring material, characterized in that made of a non-wood foreign material having an environmentally friendly functional thermal conductivity.

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