JP2009184305A - Decorative plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative plate showing high productivity without causing a bulge on a surface margin portion in the vicinity of a butt end surface. <P>SOLUTION: The decorative plate is made by integrally stacking a wooden fiber board 20 and a decorative sheet 21 orderly on a tabular base material 10 composed of a plurality of integrally stacked veneers 11 to 15, and has a tongue part 16 and a groove part 17 both formed on the opposing two side end surfaces respectively. The outer circumferential end surface of the wooden fiber board 20 and both the butt end surfaces of the surface veneer 11 of the tabular base material 10 are covered with a waterproof colored layer 22 and a transparent coat film layer 23. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a decorative board, in particular, a decorative board in which a wooden fiber board and a decorative sheet are sequentially laminated and integrated on the surface of a plate-like substrate.

  Conventionally, as a decorative board, a board is pasted on the surface of a base material, coloring is made on the attached board, a transparent paint is applied on the upper part, and a connecting part is provided for connecting a decorative board material along the periphery. In the decorative board that is formed to protrude, there is one in which the connecting portion is colored (see Patent Document 1).

  However, the penetration of water and waterproof wax cannot be prevented by simply coloring the connecting portion. Even if the colorant is applied in place of the waterproofing agent, it is not easy to apply the waterproofing agent uniformly in accordance with a complicated shape having male and female berries. For this reason, the surface side edge near the butt end face is swollen by water or wax that has entered between the butt end faces from the surface.

Therefore, an MDF board is interposed on the surface of the plate-like base material, and a wooden thin veneer is adhered, a decorative coating layer is formed on the surface of the wooden thin veneer, and an edge portion of the decorative coating layer There is a painted building board that extends so as to cover the end face of the MDF board (see Reference 2).
JP-A-10-1003008 Japanese Patent Laid-Open No. 11-333811

  However, even in the above-described configuration, when water adheres to the surface of the painted building board, the water that has entered through the gap between the butt end faces enters from the mouth of the surface layer veneer that constitutes the plate-like substrate. Then, it moves along the fiber direction and further moves to the back surface of the MDF board. For this reason, there is a problem in that the surface edge portion in the vicinity of the end face of the MDF board swells and the aesthetics are impaired.

  In view of the above problems, an object of the present invention is to provide a highly productive decorative board that does not swell at the surface edge in the vicinity of the butt end face.

  In order to solve the above problems, the decorative board according to the present invention sequentially laminates and integrates a wood fiber board and a decorative sheet on the surface of a plate-like base material obtained by integrating a plurality of single plates. In the decorative board in which the male part and the female part are respectively formed on the side end face, the outer peripheral end face of the wood fiber board and the both side mouth end faces of the surface single plate of the plate-like base material are covered with a waterproof layer. .

  According to the present invention, since the outer peripheral end face of the wood fiber board and the both side end faces of the surface layer veneer are covered with the waterproof layer, it is difficult for water and wax to enter, and the surface edge portion in the vicinity of the butt end face of the decorative board is formed. No swelling occurs.

  Another decorative board according to the present invention sequentially integrates a wood fiber board and a decorative sheet on the surface of a plate-like base material obtained by laminating and integrating a plurality of single plates, and has a genre on opposite side end faces. In the decorative board in which each of the part and the female part is formed, a chamfered part exposing an interface between the wood fiber board and the surface layer single board is formed on the outer peripheral edge part on the surface side, and the whole chamfered part, It is good also as a structure which coat | covered the vertical surface part except the said chamfering part with the waterproof layer among the both-ends end face of a surface layer single board.

  According to the present invention, in addition to the above-described effects, a waterproof layer is formed on the chamfered portion formed on the outer peripheral edge, so that not only the decorative layer but also a part of the waterproof layer is processed by the application work from the same direction. it can. For this reason, since a large-scale installation is not required for the painting of the decorative board which has a complicated shape, and a painting operation becomes simple, a highly productive decorative board can be obtained.

  Another decorative board according to the present invention sequentially integrates a wood fiber board and a decorative sheet on the surface of a plate-like base material obtained by laminating and integrating a plurality of single plates, and has a genius on opposite side end faces. In the decorative board in which the female part and the female real part are respectively formed, a chamfer in which an interface between the wood fiber board and the surface layer single board and an interface between the surface layer single board and the second layer single board are exposed at the outer peripheral edge portion on the surface side. It is good also as a structure which covered the said chamfering part whole surface with the waterproof layer while forming a part.

  According to the present invention, in addition to the above-described effects, the waterproof layer is formed on the chamfered portion formed up to a part of the second layer single plate, so that the waterproof effect is further ensured, and the surface of the decorative plate Swelling of the side edge can be prevented more reliably.

In the embodiment according to the present invention, the surface and the chamfered portion of the decorative sheet may be covered with a waterproof colored layer and a transparent coating layer. Moreover, you may coat | cover the surface and chamfering part of a decorative sheet with a colored layer and a waterproof transparent coating film layer.
According to the present embodiment, since the entire surface of the chamfered portion is covered with the waterproof colored layer or the waterproof permeable membrane layer, the waterproof layer can be formed through a normal painting operation, and the outer peripheral edge of the decorative board is swollen. Can be prevented.

In another embodiment according to the present invention, a vertical surface portion excluding a chamfered portion of both side end surfaces of a single plate may be covered with a second waterproof layer.
According to the present embodiment, since the vertical surface portion of the end surface of the veneer excluding the chamfered portion of the surface layer veneer is covered with the second waterproof layer, the waterproof effect is further ensured, and the surface side edge portion of the decorative plate is There is an effect of preventing the swelling.

Embodiments according to the present invention will be described with reference to the accompanying drawings of FIGS.
In the first embodiment, as shown in FIG. 1, a wooden fiber board 20 and a decorative sheet 21 are sequentially laminated and integrated on the surface of a plate-like base material 10, and a male part 16 and a female part 17 are provided on opposite side end surfaces. Formed respectively. The plate-like substrate 10 is a plywood in which the single plates 11 to 15 are laminated and integrated so that the fiber directions are alternately orthogonal. Next, chamfering is performed by chamfering the upper surface edge of both end surfaces on which the male part 16 and the female part 17 are formed so as to include the interface 26 between the plate-like base material 10 and the wood fiber board 20. 24 was formed. Further, the entire end surface of the veneer 11 positioned on the surface layer of the plate-like substrate 10, the entire end surface of the wood fiber board 20, and the entire exposed surface of the decorative sheet 21 are covered with the waterproof colored layer 22. Further, a transparent resin is applied to a part of the tapered surface and the flat surface of the colored layer 22 to form a transparent coating layer 23.

  According to the present embodiment, the end face of the veneer 11 located on the surface layer of the plate-like substrate 10 and the outer peripheral end face of the wood fiber board 20 are covered with the waterproof colored layer 24 so that water, wax, etc. cannot enter. Therefore, the surface edge of the decorative board does not swell.

  As described above, the plate-like substrate 10 is formed by laminating and integrating a plurality of single plates 11 to 15, but at least the surface layer single plate 11 and the second layer single plate 12 have fiber directions orthogonal to each other. As long as they are laminated and integrated as described above. For example, a plywood obtained by laminating and integrating all single plates so that the fiber directions are alternately orthogonal, or a single plate laminated material in which most single plates are laminated and integrated with the fiber directions aligned in the same direction. Well, it is possible to select a laminated structure according to the application and tree species.

  Although the tree species of the single plate is not particularly limited, it may be any material as long as it can laminate and integrate wood fiber boards to be described later, and can be appropriately selected from a wide range. For example, light-weight and low-hardness tree species, tree species that tend to warp or twist, tree species that have many defects such as missing nodes, conifers and early-planted trees that have a limited range of use, such as tree species that have a large difference in hardness between early and late wood It may be. Examples include tree species made of domestic todomatsu, larch, cedar, spruce, radiata pine, northern larch, poplar, acacia hybrid, acacia mangum, falkata, eucalyptus, rubber and the like. And these tree species can be used alone or in combination of two or more.

  The wood fiber board 20 is used as a reinforcing material by being laminated and integrated with a plate-like base material and a decorative sheet, and is generally a medium wood fiber board (hereinafter referred to as “MDF”). Or a hard wood fiber board (henceforth "HDF") is mentioned, More specifically, the specific gravity of 0.4-1.0, especially 0.6-0.8 is preferable. This is because if the specific gravity is less than 0.4, the decorative board is inferior in scratch resistance and load resistance, and if the specific gravity exceeds 1.0, swelling due to moisture increases. The thickness of the wood fiber board is preferably about 0.8 mm to 3.0 mm. This is because if the thickness is less than 0.8 mm, the reinforcing effect of the decorative sheet cannot be obtained, and if it exceeds 3.0 mm, swelling due to moisture increases.

For the MDF and HDF, a so-called “U type” using a urea melamine resin as a binder, a so-called “M type” using a melamine resin as a binder, and a phenol resin as a binder. In addition to the so-called “P type”, a wood fiber board using an isocyanate resin or a polyol resin can be used. Further, the aforementioned binder may be used in combination with hardwood wood fibers or conifer wood fibers.
In particular, in order to realize excellent shape stability, a melamine resin, a phenol resin, an isocyanate resin, or a polyol resin may be used alone or in combination as a binder for the hardwood wood fiber.

  The plate-like substrate 10 and the wood fiber board 20 are laminated and integrated through an adhesive. As the adhesive, a general wood adhesive is used. More specifically, for example, urea melamine resin, vinyl acetate resin, latex resin, aqueous vinyl urethane resin, melamine resin, phenol resin, isocyanate resin and these modified substances may be used alone or in combination. used.

  The decorative sheet 21 is not limited in material, thickness, and the like, but when a colored layer or a transparent coating film layer is provided on the surface, a sheet that easily adheres to the coloring agent or the transparent coating film is preferable. For example, a decorative paper having a thickness of 0.05 to 1.0 mm, preferably 0.05 to 0.2 mm, a decorative impregnated paper having a thickness of 0.05 to 1.0 mm, preferably 0.1 to 0.2 mm, A decorative resin sheet having a thickness of 0.05 to 1.0 mm, preferably 0.15 to 0.6 mm, a wooden decorative thin veneer having a thickness of 0.05 to 1.0 mm, preferably about 0.2 to 0.6 mm, etc. Is mentioned.

Male seed and female seed processing can be formed by a normal processing method. Further, the chamfering process can be formed using a rotary saw or a rotary blade, and may be a simple tapered surface or a rounded surface process. Further, in the chamfering process, the chamfered portion may be formed so as to include the interface between the single plate and the wood fiber board located on the surface layer of the plate-like base material, and further, The chamfered portion may be formed so as to include the interface between the single plate and the second layer single plate.
According to this embodiment, by forming the chamfered portion, the end face of the wood fiber board and the end face of the veneer can be visually observed from above, so that the waterproof coating operation is simple and reliable, and the waterproof performance varies. A decorative board with high productivity can be manufactured.

  The formation of a waterproof layer covering the outer peripheral end face of the wood fiber board 20 and both side end faces of the single plate located on the surface layer of the plate-like substrate 10 can be selected by any method, for example, a coating method, a vacuum coating method, Examples include a foil transfer method.

  The coating method refers to a waterproof coating that forms a colored layer and / or a transparent coating layer by a normal coating process, and the coating method of the colored layer is, for example, an aqueous colorant, an aqueous acrylic resin emulsion, an epoxy resin emulsion. There may be mentioned a method of adding a urethane resin emulsion, a vinyl acetate resin emulsion, a poval resin, and the like, followed by coating and then drying together with the colorant with a dryer. Alternatively, the object to be coated may be impregnated with an acrylic emulsion or an ultraviolet curable resin, or a waterproof resin such as paraffin wax may be applied and fixed to the object to be coated.

The vacuum coating method is a method in which the inside of the painting booth containing the paint is depressurized, and the paint is adhered to the entire surface of the object by passing it through the misted paint atmosphere. Is a method of curing the resin by irradiation.
According to the vacuum coating method, outside air flows into the coating booth through a gap formed between the outlet shape of the coating booth and the outer peripheral shape of the object to be coated. For this reason, an excess coating material is scraped off from the surface of a to-be-coated body by the wind pressure of the inflowing external air, and there exists an advantage that a uniform coating film can be formed.

  The foil transfer method is a method of transferring the coating film on the transfer sheet to the substrate by laminating a transfer sheet on which the coating film has been peeled in advance and laminating it on the object to be coated, and pressing with a hot roll. . The transfer sheet can be arbitrarily selected, and examples thereof include touch wood foil and tough coat manufactured by Kurz Corporation.

  When forming a waterproof layer with a transparent coating layer, the transparent resin is generally excellent in waterproofness and at the same time has excellent permeability, so it is necessary to set the UV resin coating amount slightly higher There is. In addition, when using a UV paint that is cured by irradiation with ultraviolet rays, a solventless UV paint is preferable. Moreover, when apply | coating, while making a viscosity low, from a viewpoint of the permeability improvement and application amount adjustment, it is preferable to adjust and apply | coat a viscosity, for example, heating at about 35 to 55 degreeC. .

The above-described coating process is preferably performed by a technique that does not affect the design of the decorative board, and is preferably performed continuously on a production line that performs laminating and integration of single plates, cutting, and painting operations.
For example, when the waterproof layer is formed of paraffin wax or transfer foil, the thickness of the waterproof layer is preferably 15 μm to 100 μm, particularly 20 μm to 50 μm.
Furthermore, in the case of forming a waterproof layer with a colorant or UV resin or the ^{like, 50g / m 2 ~150g / m} 2, it is preferable to particularly applied at a rate of ^{50g / m 2 ~100g / m 2} .
And there exists an advantage that productivity improves by providing a waterproof function to the transparent coating film layer formed in a colored layer or an outermost surface.

  In the second embodiment, as shown in FIG. 2, the upper surface of the decorative sheet 21 and the chamfered portion 24 are covered with the colored layer 22, and the decorative sheet 21 and the vertical surface portion of the surface layer veneer 11 are covered with the transparent coating layer 23. This is a case where a part of the vertical surface portion 25 of the second layer single plate 12 is covered. Others are the same as in the first embodiment described above, and a description thereof will be omitted.

  As shown in FIG. 3, the third embodiment covers the surface of the decorative sheet 21 and the chamfered portion 24 with the colored layer 22 and the transparent coating layer 23, and excludes the chamfered portion 24 of the surface layer veneer 11. This is a case where the vertical surface portion 25 and the vertical surface portion 25 of the second layer single plate are covered with another second waterproof layer 27. Others are the same as in the first embodiment described above, and a description thereof will be omitted.

  In the fourth embodiment, as shown in FIG. 4, an interface 26 between the wood fiber board 20 and the surface layer veneer 11, and the surface layer veneer 11 and the second layer veneer 12 This is a case where the chamfered portion 24 where the interface 27 is exposed is formed. In this case, the surface of the decorative sheet 21 and the entire chamfered portion 24 are covered with the waterproof colored layer 22 and the transparent coating layer 23. Others are the same as in the first embodiment described above, and a description thereof will be omitted.

(Example 1)
A plate-like base material having a thickness of 10.5 mm obtained by laminating and integrating five single plates through an adhesive so that the grain directions are alternately perpendicular to each other so that the grain of the surface single plate is in the longitudinal direction. By cutting, a band-shaped substrate having a width of 310 mm and a length of 1850 mm was obtained. Next, a MUR having a thickness of 1.5 mm and a specific gravity of 0.6 is adhered and integrated on the surface of the belt-like substrate using a PUR hot melt adhesive, and further, an aqueous vinyl urethane adhesive is used on the surface of the MDF. A white oak veneer was stuck and integrated to obtain a belt-like laminate. Then, the end surface on the short side of the strip-shaped laminate was divided into three equal parts in the thickness direction, and a female real part and a male real part having a fitting depth of 3 mm were formed. Furthermore, as shown in FIG. 1, a chamfered portion reaching the surface layer single plate was formed on the upper surface edge on the short side of the strip-shaped laminate.

  Next, the surface and chamfered portion of the band-shaped laminate were colored with an aqueous colorant, and a waterproof layer was formed with a waterproof transparent coating film made of an ultraviolet curable resin. Next, a soft acrylic emulsion having a resin content of 40% is applied to the vertical surface portions of the surface layer single plate and the second layer single plate, among the end surfaces on the short side, by spraying, and the extra soft material adhering to the surface and the chamfered portion is applied. After wiping off the acrylic emulsion, it was cured to obtain a sample in which the second waterproof layer was formed.

After the male part and the female part on the short side of the obtained sample were fitted and abutted with each other, 5 cc of an aqueous waterproof wax (made by Linley Co., Ltd.) colored with a dye was dropped between the abutting end faces. The mixture was left for 2 hours, and the surface change was visually observed.
As a result of observation, no swelling was observed at the surface edge in the vicinity of the butt end face. Moreover, when the cross section was observed by cutting the butt end face after visual observation, it was confirmed that the acrylic emulsion was impregnated from the butt end face to a depth of 1 to 2 mm, but the waterproof wax was not permeated.

(Example 2)
Instead of the acrylic emulsion used in Example 1, the flowable ballaffin wax is applied to the vertical surface portions of the surface layer veneer and the second layer veneer of the plate-like base material with the brush among the end surfaces of the short side of the mouth end. Thus, a sample in which the second waterproof layer was formed was obtained.

  When the same swelling test as in Example 1 was performed, no swelling was observed at the surface edge in the vicinity of the butt end face. Moreover, when the butt end surface was cut and the cross section was observed, it was confirmed that the fluid paraffin wax was impregnated to a depth of 1 to 2 mm from the butt end surface, but the waterproof wax was not permeated.

(Example 3)
The outside of the belt-like laminate obtained by processing in the same manner as in Example 1 except that a wood fiberboard having a thickness of 0.8 mm is laminated and integrated on a belt-like substrate having the same quality as that of Example 1 and a thickness of 11 mm. A chamfered portion reaching the second layer single plate of the belt-like base material was formed at the peripheral edge. And the colored layer was formed in the surface and chamfering part of the said strip | belt-shaped laminated body with the sponge coater and the rubber roll coater on the said strip | belt-shaped laminated body. Furthermore, a waterproof transparent coating film layer was formed on the surface and chamfered portion of the belt-like laminate by using a sponge coater and a roll coater to obtain a sample.

  When the sample was subjected to the same swelling test as in Example 1, no swelling or the like could be confirmed at the surface edge near the butt end face. Further, when the butt end face was cut and the cross section was observed, penetration of the waterproof wax from the butt end face could not be confirmed.

(Comparative example)
A sample was obtained in the same manner as in Example 1 except that the acrylic emulsion was not applied in Example 1.

  And when the same swelling test as Example 1 was done, the swelling of width 2-3mm was confirmed in the surface edge part of the butt | matching end surface vicinity. Moreover, when the butt end surface was cut and the cross section was observed, the penetration mark of the wax was confirmed to about 3 mm from the butt end surfaces of the surface layer single plate and the wood fiber board. When the butt end surface was cut and the cross section was observed, it was confirmed that the colored waterproof wax penetrated from the butt end surface to a depth of about 3 mm.

  As apparent from the above Examples 1, 2, 3 and Comparative Examples, it was found that the occurrence of blistering can be prevented by the waterproof layer formed on the sample.

  The decorative board according to the present invention is not limited to the decorative board described above, but can be applied to other decorative boards.

1A and 1B are a sectional view and a partially enlarged sectional view showing a first embodiment of a decorative board according to the present invention. 2A and 2B are a cross-sectional view and a partially enlarged cross-sectional view showing a second embodiment of a decorative board according to the present invention. It is a partial expanded sectional view which shows 3rd Embodiment concerning this invention. It is a partial expanded sectional view which shows 4th Embodiment concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10: Plate-shaped base material 11-15: Single board 16: Male real part 17: Female real part 20: Wood fiber board 21: Makeup sheet 22: Colored layer 23: Transparent coating layer 24: Chamfer part 25: Vertical surface part 26, 27: Interface

Claims (6)

Makeup in which a wooden fiberboard and a decorative sheet are sequentially laminated and integrated on the surface of a plate-like substrate obtained by laminating and integrating a plurality of single plates, and a male part and a female part are formed on opposite side end surfaces, respectively. In the board,
A decorative board comprising a waterproof layer covering an outer peripheral end face of the wood fiber board and both side end faces of a surface single plate of the plate-like substrate. Makeup in which a wooden fiberboard and a decorative sheet are sequentially laminated and integrated on the surface of a plate-like substrate obtained by laminating and integrating a plurality of single plates, and a male part and a female part are formed on opposite side end surfaces, respectively. In the board,
A chamfered portion that exposes an interface between the wood fiber board and the surface layer veneer is formed on the outer peripheral edge on the surface side, and the chamfered portion of the entire chamfered portion and both side end surfaces of the surface layer veneer A decorative board, wherein the vertical surface portion excluding the portion is covered with a waterproof layer. Makeup in which a wooden fiberboard and a decorative sheet are sequentially laminated and integrated on the surface of a plate-like substrate obtained by laminating and integrating a plurality of single plates, and a male part and a female part are formed on opposite side end surfaces, respectively. In the board,
Formed on the outer peripheral edge on the front side is a chamfer that exposes the interface between the wood fiber board and the surface layer veneer and the interface between the surface layer veneer and the second layer veneer, and waterproofs the entire surface of the chamfer A decorative board characterized by being coated with a layer.   The decorative board according to any one of claims 1 to 3, wherein a surface and a chamfered portion of the decorative sheet are covered with a waterproof colored layer and a transparent coating layer.   The decorative board according to any one of claims 1 to 3, wherein a surface and a chamfered portion of the decorative sheet are covered with a colored layer and a waterproof transparent coating film layer.   The decorative board according to any one of claims 2 to 5, wherein a vertical surface portion excluding the chamfered portion of both side end surfaces of the single plate is covered with a second waterproof layer.

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