JPH01314102A - Decorative sheet and its manufacture - Google Patents

Abstract

PURPOSE:To impart an uneven pattern presenting an external appearance which is equal to that of natural lumper, by a method wherein a deeply colored coating layer is formed on only a high-gravity protrusion of a decorative veneer stuck to the surface of a board and a transparent coating layer is formed on the decorative veneer extending over the whole surface. CONSTITUTION:A veneer 3 of a needle-leaved tree is stuck to a board 1. Then the surface of the veneer 3 of the needle-leaved tree stuck to the board 1 is ground. With this construction, the surface of a spring material part mainly is scraped off and an abrasion quantity is little on the surface of an autumn material part. With this construction, a protrusion 3a and recessed part 3b are formed respectively on the autumn material part and spring material part. Then a coloring coating 5 whose color is deeper than that of the recessed member is applied onto only the protrusion 3a. The coating is not infiltrated into the veneer 3 and application of clear coating free from oozing to the veneer 3 is effected. Then a transparent coating 6 not concealing a material color of the recessed part 3b is applied to the veneer 3 of the needle-leaved tree extending over the whole surface. Gloss of the transparent coating 6 itself is expressed in the protrusion 3a as it is, the gloss of the coating itself is lost in the recessed part 3b: therefore, this part becomes resemblant closely to the spring material part of natural lumber.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to decorative laminates used for wall and ceiling materials in houses, furniture veneers, etc., and a method for manufacturing the same. The present invention relates to a decorative board in which a convex portion is formed with a colored coating, and a method for manufacturing the same.

<Prior Art> Various types of decorative boards of this type have been proposed in the past, and some examples are as follows.

(1) Decorative board made of plywood with convex portions shaped like tree rings and colored paraffin adhered to the convex portions (Utility Model Publication No. 29-579)
Publication No. 6).

(2) A primary colored synthetic resin paint is applied to the surface of the base material on which the uneven pattern is formed by embossing, and immediately after that, the paint adhering to the recesses is scraped off, and then the paint filled in the recesses is separated before it dries. By applying a secondary colored synthetic resin paint with a hue of A certain decorative board (Japanese Patent Publication No. 52-33161).

(3) After polishing the surface of a decorative board made of a softwood veneer adhered to plywood, etc. to form a concave-convex pattern with concave areas in the spring wood, the entire surface of the decorative board is colored darker than the color of the fall wood. After applying a coloring agent, and then scraping off the colorant adhering to the convex parts of the autumn material, a transparent thermosetting resin is applied to the entire surface so as to fill the concave parts of the spring material, and then dried or hot-press molded. The resulting coniferous decorative board has an uneven feel. Also, instead of using two types of paint, a colorant darker than the color of the autumn wood and a transparent thermosetting resin, a colored transparent thermosetting resin darker than the color of the autumn wood is used. After applying this to the entire surface of the decorative substrate on which the uneven pattern is formed, a coniferous decorative board (Japanese Patent Publication No. 61-138
Publication No. 72).

<Problems to be Solved by the Invention> However, these decorative laminates according to the prior art each have the following drawbacks or problems.

(1) By artificially forming an annual ring pattern by embossing and applying paraffin coloring to the protrusions, the paraffin's luster is used to express the so-called texture of the autumn wood of natural wood. The difference in gloss between the recesses to which no paraffin is attached becomes too noticeable, and the appearance is far removed from that of natural wood.

(2) The secondary colored paint is applied to the convex parts of the base material surface where the uneven pattern is formed, and the mixed paint of the primary colored paint and the secondary colored paint is applied to the concave parts, and the color difference between the convex parts and the concave parts However, the texture of natural wood is not expressed at all.

(3) The concave parts of the spring wood are filled with a coloring agent or colored transparent thermosetting resin that is darker than the color of the autumn wood, so the concave parts of the spring wood are colored darker than the convex parts of the autumn wood, giving it a wood texture. However, in natural wood, the autumn wood, which has a high specific gravity and high density, has terry and exhibits a darker color than the spring wood. However, it was the opposite of natural wood, giving it an unnatural impression.

Means for Solving the Problems> Therefore, an object of the present invention is to provide a decorative veneer having an uneven pattern exhibiting an appearance comparable to that of natural wood, and a method for manufacturing the same.

The object of the present invention is to attach a decorative veneer having a concavo-convex pattern with high specific gravity areas as convex portions on the surface of a substrate, and to apply a colored coating layer having a darker color than the concave member color only on the convex portions. This is achieved by a decorative veneer characterized in that a transparent coating layer that does not hide the color of the concave members is formed on the entire surface of the decorative veneer.

The decorative board of the present invention has a softwood veneer attached to the surface of the substrate,
Polishing the surface of the coniferous veneer to form an uneven pattern with low specific gravity areas as concave areas and high specific gravity areas as convex areas, and applying a colored paint darker than the color of the concave parts only on the convex areas; Furthermore, it is manufactured by applying a transparent paint that does not hide the color of the concave member over the entire surface of the concavo-convex surface, and then drying it.

The decorative board of the present invention also includes a hardwood veneer adhered to the surface of the substrate, and the surface of the hardwood veneer is compressed to form a primary uneven pattern consisting of low specific gravity convex portions and high specific gravity concave portions. , the surface is polished to form a secondary uneven pattern with low specific gravity areas as concave areas and high specific gravity areas as convex areas, and a colored paint darker than the color of the concave member is applied only on the convex areas; It is manufactured by applying a transparent paint that does not hide the color of the concave member over the entire surface of the concavo-convex surface and then drying it.

Effect〉 By polishing the surface of the decorative veneer attached to the substrate,
The low specific gravity portions are mainly cut to form concave portions, and the high specific gravity portions, which have been polished less, remain as convex portions to form an uneven pattern similar to the annual ring pattern.

Dark colored paint is applied on the convex parts of the uneven pattern,
The color tone of the autumn wood part of natural wood is expressed.

Transparent paint is applied to the entire colored convex parts and concave parts where the color of the base material is expressed as is, but in the convex parts made of high specific gravity parts, the gloss of the transparent paint (terry in the autumn wood part) is exhibited as is. On the other hand, since the concave part consists of a low specific gravity part, a considerable amount penetrates and loses its luster, thereby expressing the color tone and texture of the spring wood part of natural wood.

When a hardwood veneer that does not have a clear annual pattern is used, a primary uneven pattern is formed on its surface by compressing it using an embossing machine or the like. As a result, the compressed concave portions have a high specific gravity, and the convex portions that have not been compressed have a relatively low specific gravity, so by subsequent polishing, a large amount of low specific gravity convex portions are ground down to become concave portions, and high specific gravity concave portions become concave portions. On the contrary, a secondary uneven pattern is formed in which the convex portions are left as convex portions.

1. Explanation of the structure and examples> FIG. 1 shows an example of the method for manufacturing a decorative board according to the present invention in the order of steps. Attach veneer 3.

Substrate l can be plywood, fiberboard, particle board, gypsum board, calcium silicate board, perlite board, asbestos slate,
It is a plate-like material such as cement board, wood chip cement board, pulp cement board, etc., which is organic or inorganic, or a mixture of organic and inorganic materials.

The adhesive 2 is one or a mixture of two or more synthetic resin adhesives appropriately selected from synthetic resin adhesives such as urea resin, melamine resin, phenol resin, resorcinol resin, vinyl acetate resin, and synthetic rubber.

An arbitrary coloring agent can be added to the adhesive 2 to use it as a colored adhesive. This hides and adjusts the board surface to the same color tone, preventing the board color from affecting the color tone of the thin needle-wood veneer, or conversely, preventing the same color tone imparted by colored adhesive from affecting the color tone of the thin needle-wood veneer. The design can be improved by influencing the color tone of the softwood veneer.

Further, a foaming agent that foams when heated can be added and mixed into the adhesive. In this case, the foaming agent in the adhesive is foamed during hot pressing of the decorative board or by heating after pressing, forming a foamed adhesive layer, which acts as a buffer layer between the board and the softwood veneer, and acts as a buffer layer between the board and the softwood veneer. It is possible to prevent warpage or twisting from occurring due to a marked difference in shrinkage or expansion due to moisture absorption, water absorption, or drying between the softwood veneer and the softwood veneer.

The softwood veneer 3 is obtained by cutting logs (7 pieces) of fir, pine, cypress, cedar, shiga, etc. into thin plates (about 0.2 to 2 mm) using a slicer or rotary lace. In the coniferous veneer 3, the shaded area in the figure shows the autumn wood with high density and high specific gravity, and the rest is the spring wood with relatively low density and low specific gravity.

The softwood veneer 3 is used after drying, or in an undried or semi-dry state, and is adhered to the substrate 1 by hot pressure, cold pressure, or the like.

Next, in the step shown in FIG. 1(b), the surface of the softwood veneer 3 thus bonded to the substrate 1 via the adhesive 2 is polished. For polishing, a polishing machine 4 such as a wire roll brush or a puff, sandblasting, or the like is used as appropriate.

Since the spring wood part of the softwood veneer 3 has a lower density and specific gravity than the autumn wood part and is relatively soft, the surface of the spring wood part of the softwood veneer 3 is mainly removed by polishing, and the surface of the autumn wood part is polished less. few.

In this way, as shown in FIG. 1(c), a decorative veneer is obtained in which the convex portions 3a are formed in the autumn wood portion and the concave portions 3b are formed in the spring wood portion, and an uneven pattern is formed on the surface of the coniferous veneer 3. .

Next, in the step shown in FIG. 1(d), a colored paint 5 having a darker color than the concave member color is applied only onto the convex portions 3a. Convex part 3
Since a is made of a high specific gravity and high density autumn wood part, the paint applied thereon does not penetrate into the veneer 3, and the paint is clearly applied without bleeding.

The colored paint 5 is a resin paint such as lacquer, enamel, acrylic resin, aminoalkyd resin, urethane resin, etc., and is applied or printed on the convex portions 3a using a roll coater, gravure or gravure offset printing machine, or the like.

Next, as shown in FIG. 1(e), the entire surface of the softwood veneer 3 including the convex portions 3a coated with the colored paint 5 is coated with concave portions 3b.
A transparent paint 6 that does not hide the color of the material is applied. The transparent paint 6 is appropriately selected from resin paints such as acrylic resin, amino alkyd resin, urethane resin, etc., and may be used as a colored transparent paint after being optionally colored.

Since the suction of paint in the convex portion 3a is very small, the gloss of the transparent paint 6 itself is expressed as is, and together with the color tone given by the colored paint 5, it becomes a material that closely resembles the autumn wood part of natural wood. . On the other hand, in the recess 3b, only the transparent paint 6 is applied, but since this part is made of spring material with relatively low density and low specific gravity and is porous, the recess 3b
In b, a considerable amount of the applied transparent paint 6 is sucked into the veneer 3. Therefore, the gloss of the paint itself is lost, and together with the color of the recessed parts, the paint closely resembles the spring wood of natural wood.

Examples of the present invention carried out by the method shown in FIG. 1 are as follows.

Use urea resin adhesive 2 on the surface of a lauan base plate l with a thickness of 5 mm, a radius of 450 mm, and a length of 2700 mm to a thickness of 0.5 m.
m Japanese pine veneer 3 is bonded under hot pressure using a hot press, and then the surface of the Japanese pine veneer is polished using a polishing machine 4 with a wire brush to remove the spring wood portion with low specific gravity to form the recess 3b. , the high-density autumn wood portion formed an uneven pattern remaining as convex portions 3a. A brown enamel is printed and applied only on the convex portion 3a using a gravure offset printing machine, and then a transparent amino alkyd paint is applied to the entire surface of the veneer 3 using a roll coater (130 to 200 g/ After drying, it was dried using a dryer.In this way, a decorative wall material made of Japanese pine veneer was obtained.

FIG. 2 shows each step of manufacturing the decorative material of the present invention by a method different from that described above.

In this method, a hardwood veneer 13 is attached to the surface of a substrate 11 similar to that described above using a similar adhesive 12 (see FIG. 2).
You can start with step a). The hardwood veneer 13 is obtained by cutting logs (flitch) of birch, sen, aningeria, marsawa, seiμ, capor, lauan, etc. into thin plates (approximately 0.2 to 211111 mm) using a slicer or rotary lace, and then dried. It is used after drying or in an undried or semi-dry state, and is pasted by hot pressure, cold pressure, etc.

Since the grain of the hardwood veneer 13 is not clear, the grain of the hardwood veneer 13 is not clear.
), embossing is performed using an embossing machine 17 or an embossing roll to form a primary uneven pattern with a wood grain pattern. This embossing may be performed at the same time as hot or cold pressure for adhering the veneer 13 to the substrate 11.
Alternatively, after adhering to the substrate 11, hot pressing or cold pressing may be performed.

In this way, a decorative board as shown in FIG. 2(c) is obtained.

Since this large uneven pattern is formed by pressing, the recesses 18 formed by embossing on the hardwood veneer 13
The lower area (hatched area) has a high specific gravity and high density, and the difference in specific gravity, density, and hardness from the convex portions is noticeable.

Then, the surface of this decorative board is polished using a polishing machine 14 or the like in the same manner as in the case of FIG. 1 (FIG. 2(d)).
Since the convex portions in the large uneven pattern have low specific gravity and low density, they are largely scraped off and become concave portions 13b, and the concave portions 18 in the large uneven pattern have a small amount of polishing, so they become convex portions 13a.
As shown in FIG. 2(e), a decorative board is obtained in which an uneven pattern is formed on the surface of the hardwood veneer 13.

Furthermore, as in the case of Fig. 1, the convex portion 1 on the hardwood veneer
Apply colored paint 15 only on 3a (Fig. 2(f)),
Thereafter, a transparent paint 16 is uniformly applied to the entire surface of the veneer 13 (FIG. 2(f)) to produce a decorative board, which is the final product of the present invention. In this decorative board as well, in the convex portions 13a, the deep color tone due to the colored paint 15 and the remarkable gloss due to the transparent paint 16 combine to give an appearance comparable to the autumn wood portion of natural wood, and the concave portions 13b are transparent. Since the paint 16 slightly penetrates into the veneer, the gloss is lost and the color of the veneer 13 itself appears, giving it an appearance similar to that of the spring wood of natural wood.

<Effects of the Invention> According to the present invention, wood texture and texture comparable to natural wood can be achieved.
A decorative board having the following properties is obtained.

[Brief explanation of the drawing]

Figures 1 (a) to (e) are schematic cross-sectional views illustrating each step of the manufacturing method for a decorative board according to the present invention, and Figure 2 (a)
- (f) are schematic cross-sectional views sequentially explaining each step of different manufacturing methods of decorative laminates according to the present invention. Explanation of symbols 1: Substrate 2: Adhesive 3: Softwood veneer 3a: Convex portion
3b: Recess 4: Polisher 5: Colored paint 6: Transparent paint
ll: Substrate 12: Adhesive 13: Hardwood veneer 13a
: Convex portion 13b: Concave portion 14: Polishing machine 15: Colored paint 16: Transparent paint 17: Embossed disc 18 Concave portion in primary concavo-convex pattern

Claims (1)

[Scope of Claims] (1) A decorative veneer having an uneven pattern with high specific gravity areas as convex parts is adhered to the surface of the substrate, and only on the convex parts is a colored coating film darker than the color of the concave parts. A decorative board characterized in that a layer is formed on the decorative veneer, and a transparent coating layer that does not hide the color of the concave member is formed on the entire surface of the decorative veneer. (2) A coniferous veneer is pasted on the surface of the substrate, and the surface of the coniferous veneer is polished to form an uneven pattern with low specific gravity areas as concave areas and high specific gravity areas as convex areas, and on the convex areas. A decorative board comprising the steps of: applying a colored paint darker than the color of the concave parts, and further applying a transparent paint that does not hide the color of the concave parts over the entire surface of the uneven surface, and then drying. manufacturing method. (3) A hardwood veneer is attached to the surface of the substrate, the surface of the hardwood veneer is pressed to form a primary uneven pattern consisting of low specific gravity convex parts and high specific gravity concave parts, and the surface is polished. to form a secondary uneven pattern with low specific gravity areas as concave areas and high specific gravity areas as convex areas, apply a colored paint darker than the color of the concave parts only on the convex areas, and then coat the entire surface of the uneven surface. A method for manufacturing a decorative board, comprising the steps of: applying a transparent paint that does not hide the color of the concave parts, and then drying it.