KR20070046219A - Method for manufacturing a floor board and a floor board made thereby - Google Patents

Abstract

The present invention relates to a flooring manufacturing method and a flooring material produced by the manufacturing method of applying a hardwood veneer melamine resin to the plywood, high density, medium-density fiberboard as a base portion and bonded by hot pressing process, Melamine is applied to the surface of the hardwood veneer 20, and then the hardwood veneer is placed in the cylindrical body 21 rotating at a high speed toward the center of rotation of the cylindrical body, and the melamine applied by the centrifugal force is applied to the hardwood veneer. It is characterized by impregnating the surface irregularities and micropores, melamine impregnated hardwood veneer according to the present invention is bonded to a plurality of plywood, by using a hardwood veneer impregnated with melamine, the taste of natural wood Floor flooring with increased scratch-resistance on the surface while maintaining high quality. By selectively using melamine sheet, various kinds of plywood, high density or medium density fiber board, etc. and natural veneer can be selectively combined as needed to produce various products of high quality with sufficient durability and rigidity. Have an advantage

Parquet flooring

Description

Method of manufacturing flooring flooring and flooring manufactured therein {METHOD FOR MANUFACTURING A FLOOR BOARD AND A FLOOR BOARD MADE THEREBY}

       1 is a schematic cross-sectional view showing a conventional parquet flooring structure.

       Figure 2 is a schematic cross-sectional view showing another example of a conventional parquet flooring.

       Figure 3 is a partial cross-sectional view showing a state in which melamine is applied to the conventional hardwood veneer.

       Figure 4 is a schematic plan view showing a method of impregnating melamine into hardwood veneer using centrifugal force according to the present invention.

       5 is a schematic cross-sectional view showing a state in which melamine is impregnated into the hardwood veneer using the centrifugal force of FIG. 4.

       Figure 6 is a schematic exploded view showing the flooring flooring structure using melamine impregnated hardwood veneer according to the present invention.

       FIG. 7 is a schematic exploded view showing a floor covering structure using melamine impregnated hardwood veneers of FIG. 6 and another embodiment.

       FIG. 8 is a schematic exploded view showing a floor covering structure using melamine impregnated hardwood veneers of FIG. 7 and another embodiment.

       Explanation of symbols on the main parts of the drawings

         20: Hardwood Veneer

         21: cylinder

         30: plywood

         31: melamine impregnated transparent cloth

         51: melamine impregnated sheet

The present invention relates to a method for manufacturing flooring materials, and more particularly, to a method for manufacturing flooring materials that is improved to have sufficient durability and rigidity against scratching while maintaining a natural wood aesthetic by using plywood, veneer, and synthetic resin layers. In addition, the present invention relates to a flooring flooring that can be used universally in ondol flooring, living room and the like produced by the flooring manufacturing method to have improved scratching and rigidity.

Recently, the use of flooring flooring using reinforced wood for flooring or living room has been increased due to the improvement of living standard, and the flooring flooring material is made of plywood, veneer and synthetic resin due to the high cost of wood and the limitation of durability. Increasingly, research is being conducted to reduce manufacturing prices.

An example of such a conventional parquet flooring material is a high pressure melamine (HPM) sheet 2 and veneer veneers 3 attached to a solid wood or plywood 1 by an adhesive, and a plurality of times on a surface layer, as shown schematically in FIG. For example, six coating layers 4 were formed. However, such flooring material has a weak disadvantage in heat and moisture with the problem that the scratching easily occurs on the surface.

In addition, as shown in Figure 2, instead of solid wood or plywood, high-density fiberboard (High Density Fiberbord) or medium-density fiberboard (5) formed by pressing the finely divided wood particles, and the vinyl sheet (6) attached to the bottom When the floor covering is formed by adhering the melamine sheet 7 for rigid reinforcement, the transfer paper 8 and the melamine coated paper 9 for preventing surface scratching, the durability of surface scratching is improved, but natural wood is not used. There was a disadvantage that the quality of the quality can not be achieved and the high density and medium density fiberboard is extremely vulnerable to moisture.

As a remedy for this, it was proposed to attach a transparent melamine impregnated sheet directly to the hardwood veneer so that the natural aesthetic of the veneer and the durability improvement effect of the scratching can be expected to improve the quality.

However, the process of attaching the melamine impregnated sheet to the hardwood veneer in the prior art has to spray the melamine in a vacuum container to apply the melamine on the veneer surface, and then harden through a hot press process.

However, the surface of the hard wood veneer 10, as shown in Figure 3, the fine concave-convex portion 11 and the fine pores are present, therefore, when the high viscosity melamine 12 is applied thereon irregularities of the veneer surface The air is trapped in the uneven part and the fine pores without being sufficiently filled with the buoys or the fine air, and the air is trapped in the melamine layer as the air trapped in the uneven part is expanded by heat when the melamine impregnated sheet is attached to the veneer in the hot pressing process. (13) occurred or the melamine surface layer was lifted from the veneer, making it difficult to be recognized as a flooring material, and the use of the melamine impregnated coated paper or sheet on the natural veneer was not practical. For this reason, in order to use melamine sheets or coated paper, it is necessary to use transfer paper instead of natural veneer, so there is a problem in that it is impossible to produce high-quality products of natural veneer.

In addition, in the case of the conventional spraying method, there are many melamine materials that are deposited on the bottom of the container as well as the surface of the hardwood veneer, and the cost of equipment such as a high pressure container is high.

Accordingly, an object of the present invention is to impregnate the melamine in the hardwood veneer in the manufacturing of the conventional parquet flooring material, and then to solve the problem of bubble generation when attaching the melamine sheet by the hot press method. Melamine is to be impregnated even to the uneven portion and the micro-pores of the surface to provide a method for producing a flooring material that can be attached to the melamine impregnated sheet on the surface.

The present invention also aims to provide a hardwood veneer impregnated with melamine on a plurality of plywood and a melamine impregnated transparent coated paper integrally with the surface thereof, thereby providing a flooring floor having increased durability against surface scratching.

In the flooring material manufacturing method of the present invention for achieving the above object, in the flooring material manufacturing method of applying a hardwood veneer melamine resin to the plywood, high-density, medium-density fiber board as a base portion and joining by hot pressing process Melamine is applied to the surface of the hardwood veneer, and then the hardwood veneer is placed in the cylindrical body rotating at a high speed toward the center of rotation of the cylindrical body, and the melamine coated by the centrifugal force is applied to the surface irregularities of the hardwood veneer. And impregnating the ball to the surface of the melamine impregnated hardwood veneer.

Further, according to the present invention, in the flooring material in which the hardwood veneer and the coated paper are bonded on the plywood, melamine is applied to the upper surface of the hardwood veneer in which melamine is impregnated into the surface irregularities and micropores by centrifugal force on the plural plywood. Melamine impregnated transparent coated paper is bonded to provide a flooring flooring that has improved durability and rigidity against surface scratching.

In addition, the melamine impregnated hardwood veneer with the melamine impregnated cladding paper is melamine between the 5-ply plywood and the hardwood veneer attached on the base of the high density fiberboard (HDF) or the medium density fiber (MDF) An impregnation sheet can also be attached.

Hereinafter, with reference to the accompanying drawings showing an embodiment of the present invention will be described in detail the present invention.

Figure 4 shows the process of impregnating melamine in the hardwood veneer (veneer) so that no bubbles are generated in the method of manufacturing the floor covering according to the present invention. According to the invention, the hardwood veneer 20 is immersed in a melamine reservoir or applied melamine on its surface, and then the hardwood veneer is placed vertically in the cylinder 21.

Then, when the cylinder 21 is rotated at a high speed, the centrifugal force acts outward from the center, so that the melamine applied to the surface of the hardwood veneer disposed in the cylinder is formed on the surface of the hardwood veneer 20 by the centrifugal force. It is pressed into the inside, and penetrates into the inside of the hard wood veneer with the fine concave-convex portion 22 on the surface of the hard wood veneer to push out the air remaining in the microcavity and filled with melamine (see FIG. 5).

Further, the melamine impregnation by the centrifugal force incidentally has the advantage that a smooth surface layer having a uniform thickness of melamine is formed on the surface of the hardwood veneer.

In accordance with the present invention, a melamine-impregnated transparent sheet (overlay sheet) 31 is attached to the outer surface of the melamine-impregnated hardwood veneer 20 and the surface of the 5-ply plywood 30 is shown in FIG. 6. It adheres and hardens and integrates in a normal hot press process. The hot press process is usually carried out at 60 ℃-190 ℃. Since the hot press process is already a technique generally practiced in the art, a detailed description thereof will be omitted.

According to the method of impregnating melamine using the centrifugal force in the hardwood veneer according to the present invention described above, the hardwood veneer 20 is completely filled with melamine so that there is no air inside, so the unevenness of veneer or veneer in the conventional hot pressing process The problem of poor adhesion and poor quality caused by the air bubbles in the negative and micropores is not generated at all, so that the aesthetics of the natural pattern of the hardwood veneer are sufficiently displayed and the rigidity is greatly increased. The melamine cladding on the surface provides a very good flooring with no scratches on the surface of the flooring.

In addition, FIG. 7 shows an example of a floor covering having a structure different from that of FIG. 6 using melamine sheets in a hardwood veneer 20 impregnated with melamine according to the present invention. The melamine sheet is formed of a plate-like member by joining a plurality of melamine-covered paper to increase the rigidity of the flooring. In this embodiment, a 0.85mm thick hardwood veneer 41 of two layers of natural wood attached to each other for rigid reinforcement is bonded on a three-ply plywood 40, and the melamine according to the present invention is placed thereon. The impregnated hardwood veneer 20 and the melamine impregnated transparent coated paper 31 are attached to provide a higher quality flooring material.

In addition, Fig. 8 shows an embodiment different from the embodiment of Fig. 7, in which the two-layered veneer 41 of natural wood is used in the embodiment of Fig. 7, whereas in this embodiment a 5-ply plywood or high density fiber is used. Attaching the melamine impregnated sheet 51 on a board (HDF) or medium density fiber (MDF) 50 and attaching only one layer of hardwood veneer 52 thereon, followed by melamine impregnated hardwood veneer according to the present invention. By attaching and forming the 20 and the melamine impregnated transparent coated paper 31, the rigidity is increased as compared with the embodiment of FIG.

According to the method of manufacturing the flooring material of the present invention, when the melamine is impregnated on the natural hardwood veneer surface, the melamine is faithfully penetrated into the uneven parts and the micropores of the hardwood veneer surface by using centrifugal force to be hard in the subsequent hot pressing process. Bubbles are not generated in the melamine on the surface of the wood veneer, and the melamine-coated paper can be directly attached to the hardwood veneer of the natural pattern to increase durability against surface scratching.

Therefore, by using melamine-impregnated hardwood veneers, while maintaining the aesthetics of natural wood, it is possible to increase the durability of surface scratching by attaching melamine impregnated coated paper to the surface, thereby improving the quality of the flooring product and melamine sheet. By selectively using between base plywood, various kinds of plywood, high density or medium density fiber board, etc. and natural veneer can be selectively combined as needed to manufacture various products of high quality with sufficient durability and rigidity. have.

Claims (3)

In the manufacturing method of flooring flooring material in which the hardwood veneer is applied to the plywood, high density, medium density fiberboard as a base part and bonded by hot pressing process, the surface of the hardwood veneer 20 is coated with melamine. The hardwood veneer is placed in the cylindrical body 21 which rotates at high speed toward the center of rotation of the cylindrical body so that the melamine applied by centrifugal force is impregnated to the surface irregularities and the micropores of the hardwood veneer, and the melamine impregnated. Melamine-impregnated transparent coated paper 31 is integrally bonded to the surface of the hardwood veneer 20, characterized in that the flooring manufacturing method. In the parquet flooring material in which hardwood veneers and cladding are bonded onto plywood, melamine impregnated transparent cladding on the upper surface of the hardwood veneer 20 impregnated with melamine according to claim 1 on a plurality of plywoods ( 31) flooring flooring, characterized in that bonded. The method of claim 2, characterized in that the upper surface of the melamine impregnated covering paper 31 is bonded to the melamine impregnated hardwood veneer 20 and the base plate plywood with a melamine impregnated sheet 51 is attached to increase the rigidity Parquet flooring.

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