JP2007196398A - Method for producing woody decorative plate with groove - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing a decorative plate with grooves inexpensively and in good work properties in which the decorative grooves have a uniform color tone and no color tone nonuniformity and are excellent in appearance, and the occurrence of faults such as the splitting of wood fibers in groove bottoms and groove upper end edge angle parts and scuffing is prevented and which is good in sole walking feeling when used as a flooring material and excellent in finishing quality even when used for purposes other than the flooring material and in which the grooves are deep and sharp and are not shallowed or made to disappear after it is used for a long time. <P>SOLUTION: The method for producing the woody decorative plate with the grooves includes a decorative sticking process in which veneer is stuck on the surface of a woody substrate to obtain a woody decorative substrate, a coating process in which a paint film is applied on the woody decorative substrate to obtain a woody decorative plate body, a paint film curing process for curing the paint film, and a groove forming process in which while the temperature of the surface of the woody decorative plate body immediately after the paint film curing process is high, the surface is pressed with a profiling roller or a template to form the decorative grooves in the surface of the woody decorative plate body to obtain the woody decorative plate with the grooves. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a wooden decorative board, and more particularly to a method for manufacturing a wooden decorative board having a decorative groove on the surface.

  In the conventional wooden decorative board 11, as shown in FIG. 7, in the decorative application step, a wooden decorative veneer 13 is attached to the surface of the wooden base material 12 to produce a decorative adhesive base material 14, and then Using a groove processing groove or a router or the like on the surface of the decorative base material 14, a cutting groove M is formed by cutting, and a grooving process is performed to produce a wood decorative board main body 15. Finally, coloring and top coating are applied, the coating film 16 is applied, and the wooden decorative board 11 with the decorative groove 17 is manufactured. Thus, the wooden decorative board 11 is manufactured in this order.

  The decorative groove 17 has various groove shapes in a cross section in a direction orthogonal to the decorative groove 17. For example, in addition to the substantially V-shaped groove in cross-sectional view illustrated in FIG. There are grooves, substantially trapezoidal grooves, and other groove shapes. However, in any shape of the decorative groove 17, the groove bottom reaches the wood substrate 12, and as described above, after performing groove processing by cutting or the like, the groove bottom of the cutting groove M In general, it is finished by applying a coloring process, a painting process and the like. In this case, the wooden decorative veneer 13 and the surface coating film 16 on the surface of the wooden decorative board 11 are divided at the decorative groove 17, and the wooden substrate 12 is exposed at the groove bottom.

  Conventionally, in the wood decorative board 11, the cross-sectional shape of the surface decorative groove 17 is the most substantially V-shaped or U-shaped in cross-sectional view among the various groove shapes in the cross-section in the direction orthogonal to the groove. Grooving has been performed as a general one. In addition, as a conventional wooden decorative board, it is a wooden decorative board with a rich three-dimensional feeling, and there is no cornered portion at the upper edge corner of the surface decorative groove, and the walking feeling is good. There is a description of an architectural decorative board having a good design without coloring unevenness in a groove portion caused by a conduit hole of a base material. (For example, refer to Patent Document 1).

JP-A-11-172904 (page 2-4, Fig. 1-4).

  However, in the conventional manufacturing method of manufacturing a grooved wood decorative board by pasting a wood decorative veneer on a wooden substrate and then cutting the groove using a groover or a router, etc., the groove bottom of the surface decorative groove is Since the base material is reached to the base material, the base material as a base is exposed at the bottom of the groove, and the color tone of the wooden material itself is different between the wooden decorative veneer on the surface and the wooden base material, and the appearance is uncomfortable. In addition, in order to eliminate the sense of incongruity, even when colored or overcoating is applied to the surface of the veneer veneer of the wood veneer and the interior of the furrow, the discomfort caused by the color difference of the wood material itself is eliminated. However, depending on the color of the paint applied, the above-mentioned uncomfortable feeling may be emphasized, which may be counterproductive, and it is difficult to eliminate it. It was.

  In addition, since the groove bottom reaches the wooden substrate, defects of the wooden substrate, such as bug holes, rot, crust, fluff, burrs, etc. occur, the finished feeling is reduced, and even if it is colored, the finish is uniform. It was a big quality problem.

  In addition, since the decorative groove processing is performed by cutting, wood fiber crust, fluff, burrs, etc. are likely to occur at the upper edge corner of the groove, and when the wooden decorative board is used as a flooring, the sock may be damaged during walking. And the feeling of walking on the soles of the feet worsened, causing various problems when walking on flooring. Even when it is used as a decorative board other than a flooring material, the above-mentioned wood fiber crust, fluff, burr and the like have been serious problems in quality.

  Moreover, in the surface decorative groove | channel of the decorative board for construction described in the said Unexamined-Japanese-Patent No. 11-172904, the composite base material comprised by laminating | bonding the plywood and the medium specific gravity fiber board as a base material is used. So it was a disadvantage in terms of cost.

  Further, in the surface decorative groove described in JP-A-11-172904, when processing the surface decorative groove, a decorative veneer is pasted on the surface of the substrate, and the groove processing is performed using a tenoner, a gag saw, a cutter, or the like. After that, the entire surface of the decorative board surface and the inside of the surface decorative groove are ground, followed by coloring, undercoating and intermediate coating using a roll coater, reverse coater, etc., and then applying a top coat with a flow coater. However, these processes are complicated, inferior in workability, and costly.

  In addition, the decorative veneer is divided at the groove, and there is a problem that the medium specific gravity fiber board is exposed.

  Furthermore, since the medium specific gravity fiber board and the wood veneer veneer that form the bottom of the groove are made of different materials, when coloring the interior of the groove with a colorant or paint, the suction when the colorant or paint sucks into the surface inside the groove. There was also a problem that uneven coloring was likely to occur inside the groove due to the different degrees.

  In addition, when grooving is performed by the embossing method, cracking will occur in the wood veneer if the embossing is performed too deeply, so there are limitations on the depth of the groove and the inclination angle of the inner wall of the groove. Grooving was difficult.

  In addition, when groove processing is performed by the embossing method, if the moisture content of woody materials such as wood substrates and wood veneer veneer fluctuates due to moisture absorption and desorption of the surrounding moisture, the makeup grooves provided with time will change over time. Therefore, there is a problem that the makeup groove becomes gradually shallower and the makeup groove disappears in an extreme case.

  The present invention has been made in view of the circumstances as described above, and the problem to be solved, that is, the object of the present invention, is a wooden decorative board, in which the color tone of the surface decorative groove is uniform and uneven color tone is present. Excellent appearance, no defects such as wood fiber crust, fluff, burr, etc. inside the groove, groove bottom, groove top edge corner, and good foot walking feeling when used as flooring, flooring Produces a decorative panel with grooves that is excellent in finished quality, and has a deep, sharp groove that does not become shallow or disappear even after long-term use. It is to provide a way to do.

  The method for producing a grooved wood decorative board according to claim 1, which has been made to solve the above-mentioned problems, is a makeup for obtaining a wood decorative base material by sticking a wooden decorative veneer to the surface of the wooden base material via an adhesive. A coating step for applying a coating film on the surface of the wooden decorative base material to obtain a wooden decorative board body; a coating film curing process for curing the coating film on the surface of the wooden decorative board body; and the coating film curing process. Immediately after the surface temperature of the wooden decorative board main body is maintaining a high temperature state, the wooden decorative board main body surface is pressed using a stamping roll or a template, and a decorative groove is provided on the wooden decorative board main body surface, It is characterized by comprising a grooving step for obtaining a grooved wood decorative board.

  In such a method for producing a grooved wood decorative board according to claim 1, a makeup application step of attaching a wooden decorative veneer to the surface of the wooden base material via an adhesive to obtain a wooden decorative base material, A coating process for applying a coating film on the surface of a decorative substrate to obtain a wooden decorative board body, a coating film curing process for curing the coating film on the surface of the wooden decorative board body, and a wooden decorative board body immediately after the coating film curing process While the surface temperature of the wood is maintained at a high temperature, the surface of the wooden decorative board body is pressed using an embossing roll or a template, a decorative groove is provided on the surface of the wooden decorative board body, Since the wood decorative board produced by this method is not divided in the decorative groove portion, the decorative wood groove produced by this method is divided into the decorative grooves. Close and smooth along the inner wall of the base material Since it is configured to be formed as a body, there is no exposure of the base material, the color tone of the surface decorative groove is uniform and there is no uneven color tone, it has an excellent appearance, the inside of the groove, the groove bottom part, the groove upper edge corner part There are no defects such as wood fiber blossoms, fluff, burrs, etc., good foot walking feeling when used as a flooring material, and good finish quality when used as a decorative board other than flooring material. Thus, it is possible to provide a method for producing a grooved wood decorative board which is excellent in workability in production and can be produced at low cost.

  Invention of Claim 2 is integrally comprised in the manufacturing method of the wood decorative board with a groove | channel of Claim 1 as a series of manufacturing processes with which the coating process, the coating-film hardening process, and the grooving process were continued. It is characterized by being.

  In the manufacturing method of the grooved wood decorative board according to claim 2, the coating process, the coating film curing process, and the grooving process are integrally configured as a series of continuous manufacturing processes. After that, the surface temperature of the wooden decorative board main body is maintained at a high temperature and the surface of the wooden decorative board main body is pressed and pressed using an embossing roll or a template before the heat is cooled down. The mold pressing and clamping for grooving can be performed before the hardness of the steel is still sufficiently hard, which is more suitable for grooving.

  Invention of Claim 3 is a manufacturing method of the grooved wood decorative board of Claim 1 or Claim 2, The sheet | seat sticking process which sticks a reinforcement sheet | seat on the wooden base material surface is carried out before a makeup sticking process. It is characterized by being incorporated as a process.

  In such a method for producing a grooved wood decorative board according to claim 3, since the sheet sticking step for sticking the reinforcing sheet to the surface of the wooden substrate is incorporated as a pre-process of the makeup sticking step, Since the reinforcing sheet is attached to the wooden substrate, and then the wooden decorative veneer is attached to the surface of the wooden decorative veneer, cracks etc. are unlikely to occur in the wooden decorative veneer even if embossing is performed in the grooving process. The depth of the embossed groove can be deep and sharp, which is suitable for the depth and sharpness of the embossed groove. It is even more suitable for stability.

  According to the invention described in claim 1, a makeup attaching step of attaching a wooden decorative veneer to the surface of the wooden base material via an adhesive to obtain a wooden decorative base material, and applying a coating to the surface of the wooden decorative base material A coating process for applying a film to obtain a wooden decorative board main body, a coating curing process for curing the coating film on the surface of the wooden decorative board main body, and the surface temperature of the wooden decorative board main body immediately after the coating curing process being maintained at a high temperature. During this process, the surface of the wooden decorative board body is pressed using an embossing roll or a template, a decorative groove is applied to the surface of the wooden decorative board body, and a grooving step for obtaining a grooved wooden decorative board is produced. Since it is made by the method, the wood veneer veneer and the coating applied to the surface thereof are not cut off at the decorative groove portion, but closely in contact with the inner wall surface of the base material forming the decorative groove, and smooth continuous Because it is configured to be formed as a body, the makeup groove part There is no exposure of the base material, the color tone of the surface decorative groove is uniform and there is no color tone irregularity, the appearance is excellent, and there are defects such as brushing, fluffing, burr etc. The foot walking feeling is good when it is used as a flooring material, and the finished quality when it is used as a decorative board other than the flooring material is excellent, and it is excellent in workability and can be manufactured at low cost.

  According to the second aspect of the present invention, since the coating process, the coating film curing process, and the grooving process are integrally configured as a series of manufacturing processes, the surface of the wood decorative board main body after the coating film is cured While the temperature is kept high and the heat is not cooled, the surface of the wooden decorative board body is pressed and pressed using an embossing roll or a template, so the hardness of the surface coating is not sufficiently hard yet. In the meantime, mold pressing for grooving is possible, which is even more suitable for grooving.

  According to the invention described in claim 3, since the sheet attaching step for attaching the reinforcing sheet to the surface of the wooden base material is incorporated as a pre-process of the decorative attaching step, that is, first, the reinforcing sheet is attached to the wooden base material. After that, the wood veneer veneer is stuck on the surface, so even if the embossing process is performed in the grooving process, the wood veneer veneer is not easily cracked and the depth of the embossed groove is increased. It is possible to perform deep and sharp, suitable for the depth and sharpness of the embossed groove, and further enabling deep and sharp groove processing, even more suitable for long-term retention and stability of the groove is there.

  An example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a grooved wood decorative board 1 of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a main part of the grooved wooden decorative board 1 of the present invention. An enlarged sectional view is shown, (a) shows an example of the first embodiment, and (b) shows an example of the second embodiment. 4 and 5 show the manufacturing process of the grooved wood decorative board 1 of the present invention, FIG. 4 (A) shows the sheet sticking process, (B) shows the decorative sticking process, and FIG. 5 (C). Indicates a coating process, (D) indicates a curing process, and (E) indicates a grooving process. FIG. 6 is an explanatory view of the grooving state of the present invention, (a) shows an example using a stamping roll R, (b) shows an example using a template K, (c) shows a stamping. The principal part expanded sectional view in the case of the roll R is shown.

  1-3, the detail of the structure of 1st embodiment of the grooved wooden decorative board 1 of this invention and 2nd embodiment is demonstrated. In the first embodiment, the wooden decorative veneer 3 is adhered to the surface of the wooden base material 2 in the cosmetic application step to obtain the wooden decorative base material 4 and applied to the surface of the wooden decorative base material 4 in the painting step. The film 5 is applied to obtain the wood decorative board main body 6, and in the subsequent curing process, the coating film 5 on the surface of the wooden decorative board main body 6 is cured, and the wood decorative board main body 6 immediately after the coating film 5 curing process is obtained. While the surface plate temperature of the surface is kept at a high temperature, that is, while the surface coating film 5 is not yet completely cured, the surface of the wooden decorative board main body 6 is pressed by the embossing roll R or Using the template K, press-clamping is performed, and a decorative groove 7 is provided on the surface of the wooden decorative board main body 6 to manufacture the grooved wooden decorative board 1 of the present invention.

  The decorative groove 7 of the grooved wooden decorative board 1 in the first embodiment shown in the present example is determined in consideration of the purpose of use of the grooved wooden decorative board 1 and its design and appearance, and the number of decorative grooves 7 is also determined. In the case of one, there may be a plurality of cases of two or more. Moreover, the groove | channel longitudinal direction of the decorative groove 7 is provided in the substantially parallel direction with the wood fiber direction of the wooden decorative veneer 3 stuck on the surface of the wooden base material 2 in this invention. In the case where the wood fiber veneer 1 is aligned and aligned in parallel with the longitudinal direction of the grooved wood decorative board 1, the groove direction is a vertical groove, and conversely, the grooved wood decorative board 1 If the wood fiber veneer 3 is aligned in parallel with the short direction and aligned with the wood fiber direction, the groove direction is a transverse groove.

  In the grooved wood decorative board 1 of the present invention, the wood decorative veneer 3 attached to the surface and the coating film 5 provided on the surface thereof are not divided at the part of the decorative groove 7. The wooden decorative veneer 3 and the substrate inner wall surface W are in close contact with each other along the inner wall surface W forming the decorative groove 7 and are formed as a smooth continuous body.

  The groove shape in the cross section in the direction orthogonal to the groove longitudinal direction of the grooved wood decorative board 1 shown in this example is shown as a substantially U-shaped groove. As the groove shape, in addition to the substantially U-shaped groove shown in this example, a substantially V-shaped groove, a substantially semicircular groove, a substantially square groove, a substantially trapezoidal groove, and other shaped grooves can be exemplified. It is determined in consideration of the purpose of use of the wooden decorative board 1 and its design and appearance.

  As the wood substrate 2 used in the grooved wood decorative board 1 of the present invention, a plywood, a medium specific gravity fiber board, a laminated material, a wood chipboard, or a composite material thereof can be exemplified as a suitable material. Further, the wood decorative veneer 3 of the present invention is a sliced veneer, a rotary veneer, a half rotary veneer, etc. of a name tree having a thickness of about 0.2 mm to 1.2 mm. Teak and other precious trees can be exemplified as suitable ones.

  A surface coating film 5 is applied to the surface of the wood decorative veneer 3 on the surface of the grooved wooden decorative plate 1 of the present invention. As the paint used for this, a colorless transparent or colored transparent synthetic resin paint is preferably used in order to highlight the appearance design of the grain of the wood of the wood veneer 3. Examples of the paint component include a urethane resin paint, an acrylic resin paint, an amino alkyd resin paint, a polyester resin paint and the like as a paint for a woody material.

  Among these wood material paints, an ultraviolet curable paint mainly composed of an acrylic resin, a urethane resin or the like can be exemplified as a suitable material. The coating material can be cured in an extremely short time (usually about 1 minute or less) by ultraviolet energy irradiated from an ultraviolet (UV) lamp, and the curing process line may be short (usually about 10 m or less). Therefore, even if the space such as the manufacturing location is taken into consideration, it is extremely easy to form a line integrally as a series of continuous manufacturing processes including the coating process, the curing process, and the grooving process. If the line is integrally formed as a series of manufacturing processes in which the three processes of the process, the curing process, and the grooving process are continuous, the surface temperature of the wooden decorative board body 6 is maintained at a high temperature after the coating film 5 is cured. Before the heat is cooled, that is, before the coating film 5 on the surface is not sufficiently cured and the hardness of the coating film 5 is not yet sufficiently hard, Alternatively, since pressing and pressing can be performed using the template K, the pressing and pressing for grooving can be easily performed with high accuracy, which is suitable for grooving.

  The same applies to the second embodiment of the present invention. However, in the case of the second embodiment, the reinforcing sheet S is provided between the wooden substrate 2 and the wooden decorative veneer 3.

  The principal part expanded sectional view of the wooden decorative board 1 with a groove | channel of this invention is shown in FIG. As shown to (a), in the wooden decorative board 1 in 1st embodiment of this invention, the wooden decorative veneer 3 stuck on the surface is provided with the coating film 5 on the surface, and the decorative groove 7 Is formed as a smooth continuous body without a break along the inner wall surface W of the concave portion of the wooden substrate 2 and in close contact with the inner wall surface W of the substrate. In this way, since the wooden decorative veneer 3 is provided as a smooth continuous body, the wooden substrate 2 serving as a base may be exposed in the interior, bottom, and groove upper edge corner D of the decorative groove 7. In addition, there is no fear of occurrence of defects such as wood fiber crayfish, fluff and burrs.

  Therefore, when finish coating is performed as necessary, the decorative groove 7 and the portion other than the decorative groove 7 are colored with a base using an oily or aqueous colored stain or the like, and further, a colorless transparent or colored transparent ground coating is applied. When painted, there is no uneven coloring due to fluffing, crusting, burrs, etc. of the wood fiber, and the color tone is uniform and uneven in color tone, including the surface decorative groove 7 and other parts than the decorative groove 7. And the appearance is excellent. In addition, since the wooden base material 2 is not exposed inside the decorative groove 7 and other parts than the decorative groove 7, the surface coloring process and the coating process can be simplified without requiring a complicated coating process, and the quality at the time of manufacture is also improved. By being stable, it is excellent in workability at the time of manufacture and is inexpensive in terms of cost.

  In particular, in the groove upper edge corner portion D, there are no defects such as crisp, fluff and burr of wood fiber. Therefore, when the wood decorative board 1 of the present invention is used as a flooring, the crisp and fluff of wood fiber is used. It is possible to prevent socks and stockings from being damaged due to defects such as burrs, and there is no fear that wood fiber sash will pierce the sole of the foot during walking. Further, even when used as a decorative board other than a flooring, the quality of the finished product is good.

  Moreover, as shown in (b), the reinforcing sheet S is attached to the surface of the wooden base material 2 in the sheet attaching step in the grooved wood decorative board 1 in the second embodiment of the present invention. A wooden veneer veneer 3 is adhered to the surface of the sheet S in a decorative pasting process to constitute a wooden veneer main body 6. Further, the wooden decorative veneer 3 is provided with a coating film 5 on the surface thereof, and is divided along the inner wall surface SW of the reinforcing sheet S forming the decorative groove 7 without being divided at the portion of the decorative groove 7. The decorative veneer 3 and the reinforcing sheet inner wall surface SW are in close contact with each other and are formed as a smooth continuous body.

  The reinforcing sheet S used in the present invention is, for example, a paper such as Japanese paper, thin paper, kraft paper, etc., a single plate reinforcing material such as nonwoven fabric, fabric, and cold water, etc. Sometimes used.

  Further, when a composite material in which a transparent and soft resin sheet is laminated on the surface of the wood veneer veneer 3 is used, a painting process may not be necessary, and there is a possibility that the cost can be greatly reduced by omitting the painting process. For example, a thermoplastic resin sheet such as a vinyl chloride resin sheet, an acrylic resin sheet, or an olefin resin sheet can be exemplified as a suitable material. In this case, a hardening process should just be utilized as a process of heating the wooden decorative board main body 6 and softening a surface resin sheet.

  Alternatively, the back surface of the wooden decorative veneer 3 may be preliminarily backed with a single-sheet reinforcing material such as Japanese paper, thin paper, kraft paper, non-woven fabric, fabric, or cold paper as the reinforcing sheet S. The wood veneer veneer 3 lined with these veneer reinforcing materials is extremely stable for the manufacturing process and advantageous in terms of cost because the risk of cracking and the like due to handling during manufacturing is extremely low. It becomes. Furthermore, since it is difficult to break at the time of grooving, grooving that is extremely sharp and deep can be performed, which is excellent in appearance design.

  In this way, the reinforcing sheet S is used as the undercoat of the wood veneer veneer 3 and the wood veneer main body 6 is still in a high temperature state after the painting process and the curing process, that is, the coating film 5 is still sufficiently. Before it becomes hard, it is embossed directly using the embossing roll R or the template K in the grooved process that is directly connected immediately after the curing process. Shaped grooves are formed. When the reinforcing sheet S is used as the undercoat of the wooden decorative veneer 3, the wooden decorative veneer 3 is not cracked by the pressing or pressing of the embossing roll R or the template K in the grooving process, When the grooved wood decorative board 1 is used for a long period of time, it is possible to effectively prevent the groove shape from being deformed by moisture or the like, the groove becoming shallow, or in an extreme case, the groove disappearing.

  Further, when the reinforcing sheet S is made of thermosetting resin-impregnated paper, the reinforcing sheet S is solidified by heat pressure along the pressed groove shape, so that the groove shape is deformed by moisture or the groove is shallow. In an extreme case, it is even more suitable for preventing the disappearance of the groove.

  Also in the second embodiment of the grooved wood decorative board 1 of the present invention, the effects of the first embodiment are exhibited. That is, after the grooving process, surface finish coating is performed as necessary, but the wooden base material 2 and the reinforcing sheet S are not exposed, so that the surface coloring process and the coating process are complicated in the finish coating. It can be simplified without the need for a painting process, and the quality at the time of manufacture is stable, so that the workability at the time of manufacture is excellent and the cost is low.

  In addition, it is possible to prevent defects such as crust, fluffing, burrs, etc. of wood fiber of the groove upper edge corner D, and to improve the feeling of walking on the sole when used as a flooring material, and when used as a decorative board other than the flooring material. It also has the effect of improving the finished quality.

4 and 5, the manufacturing process of the grooved wood decorative board 1 of the present invention will be described in detail. First, in FIG. 4, a sheet sticking process (A) and a makeup sticking process (B) are shown. In the first embodiment of the present invention, the decorative step (B) is first performed without performing the sheet sticking step (A). However, the makeup sticking step (B) shown in FIG. 4 is the case of the second embodiment. In the first embodiment, the reinforcing sheet S is omitted. The decorative sticking step (B) includes a base polishing step (not shown), an adhesive application step (not shown), and a hot press step for sticking the wooden decorative veneer 3. In the decorative pasting step (B), the surface of the wooden substrate 2 is ground with a polishing paper of about 180 to 240, and then an adhesive for woodworking, for example, urea resin, with a roll spreader (not shown). adhesives, urea melamine co-condensation resin adhesive, urethane resin was adhesives, vinyl acetate resin adhesive or the like and alone or in combination formulation, about 100g ^/ m ² ~220g / m 2 was applied, a wood decorative veneer 3 Place and heat-press with hot press H. The hot pressure condition varies depending on the type of adhesive and wood veneer 3 used, but the hot pressure temperature is about 100 ° C. to 160 ° C., the hot pressure time is about 60 seconds to 180 seconds, and the pressure is about 7 to 12 kg / hour. About cm ² is preferable. The thicker the wood veneer 3 is, the longer the hot press temperature and hot press time are.

Further, instead of hot pressing using the hot press H, hot pressing may be performed with a hot roll. In addition to the above-described hot pressing, cold pressing may be performed with a cold press. However, in this case, the pressing time takes a considerable amount and varies depending on the adhesive to be used. For example, if it is at least 2 hours to a long time, it may take about 24 hours, which requires a long time.
Moreover, the manufacturing conditions of the above-described makeup attaching step (B) are merely examples, and are not limited to these conditions.

  Moreover, in 2nd embodiment of this invention, a sheet sticking process (A) is implemented prior to the said makeup sticking process (B). Next, a decorative sticking step (B) shown in FIG. 4 is performed. Also in the sheet sticking step (A), it is preferable to perform hot pressing with a hot press H or a roll press (not shown) as in the decorative sticking step (B). Since the hot-pressing condition in the hot press H varies depending on the type of the adhesive and the reinforcing sheet S to be used, it is necessary to select an appropriate bonding condition. In the decorative pasting step (B), an adhesive (not shown) is applied to the surface of the reinforcing sheet-attached wooden base material 2S produced by attaching the reinforcing sheet S in the previous step, and the wooden decorative unit is applied thereon. The plate 3 is placed and hot-pressed with a hot press H or a roll press (not shown). In addition, the adhesive as described above is applied to the wooden substrate 2, and the reinforcing sheet S and the wooden decorative veneer 3 are placed on the wooden substrate 2 in this order, and then hot press H or roll press (not shown) at a time. May be hot-pressed. In this case, it is necessary to increase the coating amount of the adhesive by about 30 to 50%, and it is necessary to make the hot pressing time somewhat longer. Moreover, you may clamp by cold pressing at once.

  Next, in FIG. 5, it shows about the coating process (C), hardening process (D), and grooving process (E) in 1st embodiment and 2nd embodiment of this invention. The wooden decorative base 4 is cured until the surface temperature of the wooden decorative base 4 obtained by sticking the wooden decorative single plate 3 in the decorative sticking step (B) reaches room temperature. Thereafter, it is put into the painting process (C). The painting process (C) includes a coloring process, a coloring agent drying process, and a painting process. The coloring step is determined in consideration of the finished design, and may be omitted depending on circumstances.

  First, the well-cured wooden decorative base 4 is ground with a polishing paper. The count of the abrasive paper at this time is preferably about 180 to 240.

In the coloring step, a colorant having a predetermined color tone made of aqueous or oily stain is applied using a roll coater F having a synthetic resin foam or a coating roll such as a urethane rubber roll or a butyl rubber roll having a relatively low rubber hardness. The application conditions may be normal coloring application conditions. Subsequently, it passes through the jet dryer J, the applied colorant is dried with hot air, and then the coating process is started. The coating amount of the coloring agent is about ^20g / ^{m 2 ~50g} / m 2 are preferred. The drying temperature of the jet dryer J is preferably about 60 to 80 ° C.

  In the painting process, as an apparatus for applying paint, in this example, a natural-reverse coater is illustrated as a suitable roll coater. Coating is performed with a reverse roll RE that rotates in the reverse direction following the natural roll NA that rotates in the forward direction with the feed direction of the material. The paint is applied with the natural roll NA, and the reverse roll RE is applied so that the paint is rubbed into the conduit of the wood veneer 3. The paint to be used can be preferably exemplified by a urethane resin paint, an acrylic resin paint, an amino alkyd resin paint, a polyester resin paint and the like as a paint for a woody material. Among these paints for wood materials, an ultraviolet curable paint mainly composed of an acrylic resin, a urethane resin or the like can be exemplified as a suitable material.

The coating material can be cured in an extremely short time (usually about 1 minute or less) by ultraviolet energy irradiated from an ultraviolet (UV) lamp, and the curing process line may be short (usually about 10 m or less). Therefore, even if a space such as a manufacturing place is taken into consideration, the three steps of the coating step (C), the curing step (D), and the grooving step (E) can be integrated as a series of manufacturing steps. The coating amount of the coating material is about ^30g / ^{m 2 ~100g} / m 2 are preferred. The details of the manufacturing conditions in each of the above steps are a suitable example, and are not limited thereto.

  Next, the curing step (D) and the subsequent grooved step (E) will be described in detail. After the paint is applied in the pre-painting process (C), the paint is subsequently applied to the curing process (D), the paint is cured by the curing device T, and the wood decorative board main body 6 is produced. In this example, as a most preferable example, a case where an ultraviolet curable coating material is used and passed through a curing device T provided with an ultraviolet lamp to cure the coating material is illustrated.

The manufacturing conditions of the curing process were as follows as an example. The ultraviolet ray irradiation energy of the ultraviolet ray irradiation device is about 60 to 200 millijoules / cm ² , the length of the ultraviolet ray irradiation device is about 3 to 10 m, and the ultraviolet ray (UV) irradiation time is about 5 to 40 seconds. It was. The board surface temperature of the wooden decorative board body 6 immediately after passing through the curing device T was about 50 to 70 ° C.

  After the undercoat paint is cured in the curing step (D), the coating film 5 is formed, and the wood decorative board main body 6 is produced, while the temperature of the material surface is high, that is, the coating film 5 Before it is completely cured, it is put into the next grooving step (E), and the grooving device G is provided with a decorative groove 7 having a predetermined shape. The manufacturing conditions of the grooving step (E) were as follows as an example. The groove shape in the cross section in the direction orthogonal to the groove longitudinal direction of the decorative groove 7 shown in this example was a substantially U-shaped groove. While the surface temperature of the wood decorative board body 6 is high, the wood decorative board body 6 is passed through a gap between the embossing roll R having a shape matching the groove shape and the lower feed roll. The decorative groove 7 is formed by pressing with the embossing roll R. Thereafter, if necessary, the plate surface is sufficiently cured until it reaches room temperature.

  Moreover, after the said grooving process (E) and subsequent curing, surface finish coating (not shown) is performed as needed. In this way, the grooved wood decorative board 1 is produced. If it is necessary to perform surface finish coating, intermediate polishing is performed with abrasive paper immediately before finish coating. The count of the abrasive paper at this time is preferably a relatively fine abrasive paper of about 240 to 400. The surface finish coating may be performed by a roll coater, a flow coater, spray coating or the like (not shown). It is better to use the same type of paint as the undercoat if possible, and the adhesion between the coating film 5 before grooving and the surface finish paint will be better. Even in this case, the occurrence of whitening phenomenon, peeling phenomenon, surface cracking, etc. of the coating film can be prevented, which is suitable for long-term durability performance. Among the wood material paints, an ultraviolet curable paint mainly composed of an acrylic resin, a urethane resin or the like can be exemplified as a suitable material.

  In FIG. 6, the detail of the grooving state of this invention is demonstrated. As the grooving device G, (a) in FIG. 6 shows an example using the embossing roll R, (b) shows an example using the template K, and (c) shows the case of the embossing roll R. The principal part expanded sectional view is shown. The embossing roll R is provided with a pressing portion P at the tip thereof. The shape of the pressing portion P is provided so as to substantially match the shape of the decorative groove 7. That is, the pressing portion P is formed with a groove inner wall pressing portion P1 that matches the groove shape at the foremost portion, and in this example, has a substantially U-shaped shape. In addition, left and right ends of the substantially U-shaped groove inner wall pressing portion P1 are provided with curved surfaces P2 that are swelled inwardly of the embossing roll R, respectively, and end portions of the curved surface P2. The flat surface P3 is provided on each of the left and right sides.

  When the wood decorative board main body 6 of the present invention is pressed by the embossing roll R, first, the wood decorative veneer 3 is placed on the foremost part of the pressing part P at the tip of the embossing roll R, that is, the groove inner wall pressing part P1. As the surface comes into contact and the wooden decorative board main body 6 is moved forward by the conveying force of the lower feed roll, the groove inner wall pressing portion P1 bites into the deep inside of the wooden decorative veneer 3 and presses it. Next, the curved surface P2 of the embossing roll R and the surface of the wooden decorative veneer 3 come into contact with each other and are pressed by the curved surface P2, and the wooden decorative veneer 3 and the lower wooden substrate 2 under the curved surface P2. The surface layer portion is pressed, and the groove upper edge corner portion D having a shape matching the shape of the curved surface P2 is formed. In this example, the shape of the groove upper edge corner portion D formed in this way is a curved surface bulging outward as viewed from the wooden substrate 2 (inside of the embossing roll R, as viewed from the embossing roll R). Curved surface in the direction of bulging out. Therefore, it is possible to prevent defects such as crusting, fluffing, burrs, etc. of the wood fiber at the upper edge corner D of the groove, improving the feeling of walking on the sole, especially when used as a flooring material, and for use as a decorative board other than the flooring material The finished quality is improved. According to such a groove forming process, a decorative groove 7 having a predetermined shape is formed. This groove forming process is similar in the case of using the template K shown in FIG. However, since the template K is considerably expensive to manufacture, the embossing roll method is advantageous in terms of cost.

  In addition, the coating process (C), the curing process (D), and the grooving process (E) are the same in the case of the first embodiment of the present invention and the case of the second embodiment of the present invention. . However, in the case of the second embodiment in the first step, it is necessary to provide the sheet sticking step (A) as a pre-step of the decorative sticking step (B).

Here, it is as follows when the manufacturing method of the wooden decorative board 1 with a groove | channel of this invention is described in the order of the process.
(Manufacturing process)
(1) Sheet sticking step (A) (This step is performed as necessary. Only in the case of the second embodiment).
1. A wooden substrate 2 having a predetermined width, length and thickness is prepared.
2. The surface of the wood substrate 2 is ground with abrasive paper.
3. A woodworking adhesive is applied to the surface of the wooden substrate 2.
4). The reinforcing sheet S is placed on the surface of the wood base material to which the adhesive is applied.
5). A hot press H is used to heat-press the reinforcing sheet-attached woody base material 2S.
(2) Makeup step (B)
1. A wooden substrate 2 or a reinforcing sheet-attached wooden substrate 2S having a predetermined width, length, and thickness is prepared.
2. In the case of the wooden substrate 2, the surface of the wooden substrate 2 is ground with polishing paper.
3. A woodworking adhesive is applied to the surface of the wooden substrate 2 or the reinforcing substrate-attached wooden substrate 2S.
4). The wood decorative veneer 3 is placed on the surface of the wood substrate 2 or the reinforcing sheet-attached wood substrate 2S to which the adhesive is applied.
5). The wooden decorative base 4 is produced by hot pressing using a hot press H.
The sheet sticking step (A) and the decorative sticking step (B) are not necessarily performed in two steps, and are preferably performed in one step in consideration of simplification of the manufacturing process. In this case:
(Simultaneous application process for sheet application and makeup application)
1. A wooden substrate 2 having a predetermined width, length and thickness is prepared.
2. The surface of the wood substrate 2 is ground with abrasive paper.
3. Apply a little more woodworking adhesive (usually about 30% to 50% more) to the surface of the wood substrate 2.
4). The reinforcing sheet S and the wood decorative veneer 3 are placed in this order on the surface of the wood substrate 2 to which the adhesive is applied.
5). A hot press H is used to heat and apply the reinforcing sheet S and the wooden decorative veneer 3 at the same time to produce the wooden decorative substrate 4 using the reinforcing sheet S.
(3) Painting process (C)
1. The surface of the wooden decorative base 4 is ground with polishing paper.
2. A colorant is applied with a roll coater to color the surface of the wood veneer 3.
3. It is put into a hot air drying oven such as a jet dryer to dry the colorant.
4). Paint with a roll coater. (A UV curable coating is preferred).
(4) Curing step (D)
1. Immediately after painting, it is put into the curing device T. As the curing device T, when the coating material is an ultraviolet curable coating material, the coating device is charged into the curing device T equipped with an ultraviolet irradiation machine to cure the coating material.
2. In this way, the paint is cured, and the wooden decorative board body 6 is produced.
(5) Grooving process (E)
1. While the surface temperature of the board surface of the wooden decorative board body 6 carried out from the curing device T equipped with the ultraviolet irradiation machine is high, that is, while the surface coating film 5 is not yet sufficiently cured, it is grooved. Insert into device G. (Grooving device G has an embossing roll R method and a template K method, but the continuous pressing line of the production line is preferable, and the embossing roll R method is more suitable.)
(6) Finishing process (not shown).
1. If necessary, it is put into a finish coating process, finish coating is performed, and the production of the grooved wood decorative board 1 of the present invention is completed.

  The grooved wood decorative board 1 is manufactured by the above-described process. Of the above processes, the coating process (C), the curing process (D), and the grooving process (E) are integrally configured as a series of manufacturing processes. Since the surface temperature of the main body 6 is maintained at a high temperature and the heat is not cooled, the surface of the wooden decorative board main body 6 is pressed and pressed using the embossing roll R or the template K, etc. While the hardness of 5 is not yet sufficiently hard, it becomes possible to perform mold pressing for grooving, which is more suitable for grooving.

The perspective view which shows 1st embodiment of the wooden decorative board with a groove | channel of this invention. AA sectional view taken on the line AA of FIG. The principal part expanded sectional view of the wooden decorative board with a groove | channel of this invention. (A) The example of 1st embodiment is shown. (B) An example of the second embodiment is shown. The manufacturing process of the wood decorative board with a groove | channel of this invention is shown. (A) Sheet pasting step. (B) Makeup step. The manufacturing process of the wood decorative board with a groove | channel of this invention is shown. (C) Painting process. (D) Curing step. (E) Grooving step. Explanatory drawing of the grooving processing state of this invention. (A) The example using the embossing roll R is shown. (B) The example using the template K is shown. (C) The principal part expanded sectional view in the case of the embossing roll R is shown. Sectional drawing which shows the conventional wooden decorative board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wood decorative board with a groove | channel 2 Wooden base material 2S Reinforcement sheet sticking wooden base material 3 Wooden decorative veneer 4 Wooden decorative base material 5 Paint film 6 Wood decorative board main body 7 Cosmetic groove S Reinforcement sheet W Base material inner wall surface SW Reinforcement sheet inside Wall surface D Groove upper edge corner (A) Sheet pasting process (B) Makeup pasting process (C) Painting process (D) Curing process (E) Grooving process H Hot press F Roll coater NA Natural roll RE Reverse roll J Jet dryer T Curing device G Grooving device R Embossing roll K Mold plate P Pressing portion P1 Groove inner wall pressing portion P2 Curved surface P3 Flat surface 11 Conventional wood decorative plate 12 Wood base 13 Wood veneer veneer 14 Makeup pasting base 15 Wood finish Plate body 16 Paint film 17 Makeup groove M Cutting groove

Claims (3)

A makeup sticking step for obtaining a wood makeup base material by sticking a wood makeup veneer to the surface of the wood base material via an adhesive, and a painting step for applying a coating film to the surface of the wood makeup base material to obtain a wood makeup plate body A coating film curing step for curing the coating film on the surface of the wooden decorative board main body, and a surface of the wooden decorative board main body while the surface temperature of the wooden decorative board main body immediately after the coating coating curing process is maintained at a high temperature. Manufacturing a grooved wood decorative board characterized by comprising a groove forming step of applying a groove on the surface of the wood decorative board body to obtain a grooved wood decorative board Method. 2. The method for manufacturing a grooved wood decorative board according to claim 1, wherein the coating process, the coating film curing process, and the grooving process are integrally formed as a series of manufacturing processes. The method for producing a grooved wood decorative board according to claim 1 or 2, wherein a sheet sticking step for sticking a reinforcing sheet to the surface of the wood base material is incorporated as a pre-process of the decorative sticking step. .

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