JP4775307B2 - Floor finishing method - Google Patents

Description

  The present invention relates to a floor finishing method. More specifically, the present invention relates to a surface finishing method for a flooring made of a single plate of muku.

  Muku flooring, that is, timber, cedar, cypress, lawan, beech, maple, wig, oak, etc. Widely used than before.

  That is, the raw wood cut from the mountain has a moisture content ranging from 40 to 300% depending on the kind of the tree, and therefore, moisture is usually released by natural drying. After that, the bark is peeled off, and the work of cutting out the square and plate materials is performed. Thick board materials such as flooring are cut in the direction of the board (irregular curved pattern appearing on the surface of the board cut in the tangential direction so as to follow the annual ring), and the moisture absorbed and released by the board Dry by natural drying or heat drying until an equilibrium equilibrium water content is reached.

  The above-mentioned equilibrium moisture content varies depending on the facility, region, and application, so it cannot be said unconditionally. However, it is roughly 12 to 16%, and in building materials and furniture materials that are basically used indoors with air conditioning facilities, It needs to be further dried. Normally, drying is performed by heating in a drying chamber.After the drying process, a sufficient curing period is provided, and the moisture content in the wood is made as uniform as possible so that there is no error in dimensions when used on site. Shipped. As shown in the block diagram of FIG. 4, the dry veneer of Muku shipped in this way is used as a final product, for example, a flooring material, after finishing the surface treatment, sanding, coloring painting, finish painting, etc. Is done.

On the other hand, as described above, wood can be molded by utilizing the property of being poor in dimensional stability when the moisture content is high. The following Patent Document 1 discloses a press molding apparatus for performing curved surface processing on wood, that is, an upper mold having a molding surface that is convexly curved downward, and an upper mold corresponding to the molding surface shape of the upper mold. There is disclosed a wood press molding apparatus comprising a lower mold having a concavely curved molding surface and a plurality of parallel cushion springs on the molding surface of the lower mold. And the technology that the wood can be steamed to a wet state with a high moisture content, and the wood can be pressed into the wood with a curved surface by reducing the molding defects such as cracks and breakage by pressing the wood with the press molding device. Is disclosed.
No. 07-27126 (pages 1 to 3, Fig. 1)

  However, conventionally, according to the block diagram shown in FIG. 4 of the present application, when the drying veneer 1 is dried by heating the surface coating of the flooring material produced through the surface treatment process, sanding process, coloring coating process, and finish coating process, There is a problem in that air contained in fine gaps such as cracks, cracks, holes, and the like inherent in the dry veneer 1 that is a base material expands into bubbles, resulting in irregularities in the coating film. As a result, after finishing the coating, the surface is rough, fluffy and rough, and the touch is poor.

  The present invention has been made in order to solve such problems, and the surface finish of the flooring to obtain a good-looking flooring that is smooth in the surface of the single plate of Muku and has excellent dimensional stability. The problem is to provide a method.

In order to solve the above problems, the present invention takes the following technical means. That is, according to the first aspect of the present invention, a dry muku veneer having an equilibrium moisture content of 12 to 16% is applied in advance at a pressure of 0.1 to 10 kg / cm @ 2 so as not to cause structural damage to the veneer. There is provided a surface finishing method for a flooring which finishes the surface through a surface treatment process, a sanding process, a color painting process, and a finish painting process after the pressure treatment. As the above-mentioned Muku veneer, natural wood board materials usually used for building materials and furniture, etc. are mentioned. can give.

In addition to the invention according to claim 1, the floor finishing method according to claim 2 is a single plate having a thickness of 5 to 15 mm.

In addition to the invention according to claim 1, the surface finishing method for flooring according to claim 3 is performed by a mold method in which the pressurization is compressed by an upper mold and a lower mold.

The surface finishing method of the flooring according to the first aspect of the present invention is as described above, and the Muku veneer dried to an equilibrium moisture content of 12 to 16% is not caused to cause structural failure in the veneer in advance. after subjected to pressure treatment at a pressure of to 10 kg / cm @ 2, cracked or inherent to dry veneers as a base material, began pressure efficiently air contained in pores such minute gaps, surface treatment, sanding, coloring By finishing the surface through normal processes such as painting and finishing, the air is thermally expanded to form bubbles by heating when drying the paint, thereby preventing irregularities on the surface. Therefore, the surface of the flooring can be finished smoothly without fuzzing.

  The surface finishing method for a flooring according to the invention described in claim 2 is as described above. In addition to the effect of the surface finishing method for a flooring according to claim 1, a single plate having a thickness of 5 to 15 mm. Thus, the floor surface can be constructed with good workability as a flooring material, and the floor surface can be finished with good design.

The floor finishing method according to claim 3 is as described above. In addition to the effect of the floor finishing method according to claim 1, the pressurization is compressed by an upper mold and a lower mold. Since the pressure is evenly applied to the entire dry veneer, air contained in fine gaps such as cracks, cracks and holes existing in the dry veneer is pressed out evenly, and the surface of the dry veneer is It can be dense and smooth.

  Hereinafter, an embodiment of a flooring surface finishing method according to the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing steps of the floor finishing method. Muku veneer made from pine, cedar, cypress, etc., to a thickness of 5 to 15 mm is dried to an equilibrium moisture content of about 12 to 16% in a non-illustrated drying apparatus. In the pressurizing step, the dry veneer 1 is first pressed by a press device including an upper mold and a lower mold to form a pressure dry veneer 1a.

FIG. 2 is an explanatory view showing a pressurizing process in which the dry veneer 1 is pressed by the press device P composed of the upper mold 2 and the lower mold 3. At this time, the pressurization is performed at a pressure that does not cause structural breakage in the dry veneer 1, that is, 0.1 to 10 kg / cm ² , taking into consideration the external environment such as the type of tree, temperature, and humidity, etc. Select the optimum pressure as appropriate. With this pressurization, as schematically shown in FIG. 3, the air contained in the minute gaps 11 such as cracks and cracks present in the dry veneer 1 is compressed, pressed out, and pressurized. The surface of the veneer is tightened and dense. A normal coating process is performed on the pressure-dried veneer la having the surface compressed in this way.

  That is, as shown in the block diagram of FIG. 1, a surface treatment agent such as putty or veneer coat is applied to the surface of the pressure-dried veneer 1a after the pressurizing step to perform surface treatment. Usually, the surface treatment agent is applied by a roll coater method, a flow coater method, a curtain coater method, a spray method, or the like, and the surface treatment agent is uniformly applied to the compressed surface.

  Subsequently, the surface of the pressure-dried veneer 1a coated with the surface treatment agent is sanded. Sanding is performed by a known mechanical method such as manual or belt sander, or a roll brush sander with sandpaper of # 180 to # 240. The roughness of the sand paper, the roughness of the roll brush, and the like are appropriately selected and used depending on the type of tree to be used, the thickness and size of the pressure-dried veneer 1a, and the like.

  The pressure-dried veneer 1a that has completed the sanding step is then subjected to a color coating process with an undercoat paint. The undercoat paint is usually colored with an oil-based paint or a water-based paint so as to have a neutral or light color in order to take advantage of the warmth, softness, and design characteristics of the wood.

  Usually, in the colored coating process shown in FIG. 1, heating is performed to dry the paint, but air contained in the minute gaps 11 such as cracks and cracks inherent in the dry veneer 1 in the pressurizing process described above is Since it has already been squeezed out, bubbles are not generated and unevenness on the surface can be prevented.

  The painted surface thus colored is finally finished. The finish coating gives gloss to the surface of the pressure-dried veneer 1a, protects the surface of the pressure-dried veneer 1a by forming a hard coating film, prevents dirt from adhering to the surface, etc. For various purposes. For the finish coating, a curable clear paint is mainly used, and an acrylic or urethane ultraviolet curable or heat curable clear paint is used. The surface of the flooring 1b finished in this way is smooth with no fluffing, is easy to touch, and an excellent flooring can be provided by carrying out the method of the present invention.

It is a block diagram which shows the process of the surface finishing method of the flooring concerning this invention. It is explanatory drawing which shows the pressurization process which pressurizes a dry single board with a press apparatus. It is explanatory drawing which shows the effect of the pressurization in a pressurization process. It is a block diagram which shows the process of the surface finishing method of a well-known flooring.

Explanation of symbols

1 Drying veneer 1a Pressurized drying veneer 1b Floor material 11 Crevice 2 Upper die 3 Lower die P Press device

Claims (3)

After applying a pressure treatment of 0.1 to 10 kg / cm @ 2 in order to prevent structural destruction of the single plate of Muku, which has been dried to an equilibrium moisture content of 12 to 16% , the surface treatment step, sanding step, coloring Surface finishing method for flooring that finishes the surface after painting and finishing. The surface finishing method for a flooring according to claim 1, wherein the thickness of the dried single plate of Muku is 5 to 15 mm.   The surface finishing method for a flooring according to claim 1, wherein the pressurization is performed by a mold method in which the upper mold and the lower mold are compressed.

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