JPH07149100A - Veneer manufacturing method - Google Patents

Abstract

(57) [Summary] [Structure] A decorative sheet in which a wood grain pattern is printed on the surface of a base material, and another printed layer in which at least one of hue, density or saturation is changed is formed above or below the pattern layer. This decorative sheet is attached to a substrate to form a decorative plate, and this decorative plate is divided into small pieces of the same size to form a large number of small decorative plate pieces. A method of manufacturing a veneer with a worn gradation. [Effect] There is no need for troublesome methods such as preparing printing inks and printing plates of different compositions to prepare various decorative boards with different colors, or selecting small pieces of different colors to combine and ship, or selecting at the time of use. become.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a decorative board having a wood grain pattern.

[0002]

2. Description of the Related Art Thin plates and sheets having patterns such as those obtained by printing patterns on various base sheets, or veneer sheets obtained by slicing natural wood,
There is a surface finishing method in which after laminating on a plywood or other substrate to form a decorative plate, the resulting decorative plate is cut to make a large number of small decorative plate pieces of the same size, and the small decorative plate pieces are attached to another object.

[0003]

[Problems to be Solved by the Invention] By preparing a large number of small decorative plate pieces having different colors and attaching them at random, it is possible to carry out a variety of construction work. However, since the natural wood veneer is a slice of natural wood, if it is used as a decorative board, it tends to be a decorative board having almost the same shade as the wood grain pattern. Further, even if a wood pattern is formed on the base sheet by the printing means, since the hues, densities, and saturations of the respective decorative boards are originally the same, they are divided into small pieces of the decorative board. However, even if these are joined together to form a decorative plate, the decorative plate has a joint pattern with the same shade, and there is a drawback that the change is poor.

As a countermeasure, it is conceivable to prepare various decorative boards having different colors, but it is necessary to prepare printing inks and printing plates of various different compositions, and even if many kinds of decorative boards can be prepared. The production efficiency is extremely poor because there is a trouble that it is necessary to select pieces of different colors after they are made into pieces of decorative board and then combine and ship them, or to select them at the time of use.

[0005]

SUMMARY OF THE INVENTION The present invention provides means for solving the above problems, in which one kind of wood grain pattern is printed on the surface of a base material, and a hue is provided above or below the pattern layer. , Forming another printing layer in which at least one of density or saturation changes stepwise or steplessly, and at least one of hue, density or saturation of the pattern changes stepwisely or steplessly Make a decorative sheet, and attach this decorative sheet to a substrate to make a decorative plate, divide this decorative plate into rectangular pieces of the same size with the longitudinal direction of the grain direction, and cut many decorative plate pieces. A method for manufacturing a decorative board is characterized in that the decorative board pieces are formed, and the decorative board pieces are appropriately arranged and attached to a base such as plywood.

[0006]

According to the method of manufacturing a decorative board of the present invention, first, a decorative sheet having a change in color is produced in one decorative sheet on which one type of wood grain pattern is printed, and the decorative sheet is attached to a substrate to make up the makeup. After it is made into a board, it is cut into appropriate intervals and lengths and formed into small pieces of decorative board, which is then attached to a base such as plywood to produce, so the decorative boards have different shades. become.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a plan view illustrating a decorative sheet on which a wood pattern is printed according to the present invention. Since the plan view of the decorative plate obtained by pasting this decorative sheet is the same as that in FIG. 1, this figure is also the plan view for explaining the decorative plate produced by pasting this decorative sheet.

The decorative sheet 1 shown in FIG. 1 has a wood grain pattern 2 as a whole, and the color density is higher on the left side of the drawing, and the color density is lower toward the right side of the drawing. . In FIG. 1, for convenience, the wood grain is drawn by a line drawing, and halftone dots having a gradation (gradient of density) are overlapped to conveniently show the above state. Further, the left and right portions 3 and 3'in FIG. 1 usually indicate that there is a printing margin on the left and right of the decorative sheet on the surface of the decorative plate.

FIG. 2 is a graph showing how the color density of the pattern on the decorative plate changes, as shown in FIG.
Indicates that the color density linearly decreases from the left side to the right side as shown in FIG. 1, and A and B in the graph correspond to A and B in FIG. The same applies to the graph.

FIG. 2 (b) has a density gradient opposite to that shown in FIG. 1, and FIG. 2 (c) shows an example in which the central color has high density and both sides have low density. On the contrary, d) is low in the center,
An example is shown where both sides are high. 2 (a) to 2 (d), the change in color density is linear, but it may be curved. Alternatively, instead of a stepless one such as a straight line or a curved line, it may be a stepwise one as shown in FIG.

In the above description, the change in color density has been described. However, in addition to the change in color density, the lightness of color and the saturation of color can be changed. Then, any two of color density, lightness or saturation may be changed at the same time,
You may change all three.

As described above, in order to produce a decorative sheet having a pattern in which at least one of hue, density or saturation changes in a stepwise or stepless manner, the hue above or below the grain pattern layer is At least 1 of density or saturation
There is another layer in which one is changing stepwise or stepless.

The other layer is, for example, a structure provided as a colored layer for forming a patterned base on the base material of a decorative sheet, that is,
In some cases, the base material / colored layer / pattern is formed, or in the case where the base material of the decorative sheet is provided with a pattern, that is, the base material / pattern / colored layer is formed. In any case, the colored layer does not necessarily have to be in direct contact with the pattern, and may be provided through another layer.

When the colored layer is provided on the pattern, the colored layer must be transparent so that the pattern can be seen through. In any case, the colored layer may be provided by a method such as printing using a printing plate having gradation.

The base material of the decorative sheet used in the present invention, the pattern,
Regarding the colored layer and other configurations, the same configuration as a general decorative sheet can be adopted. That is, as the substrate, thin paper, bleached kraft paper, paper such as titanium paper, linter paper, paperboard, gypsum board paper, polyethylene film, polypropylene film, polyvinyl chloride film, polyvinylidene chloride film, polyvinyl alcohol film, Polyethylene terephthalate film,
Polycarbonate film, nylon film, polystyrene film, ethylene-vinyl acetate copolymer film, ethylene-vinyl alcohol copolymer film, plastic film such as ionomer, or
Metal foils or sheets of iron, aluminum, copper or the like can be used, and may be appropriately combined and used. For example, a flame-retardant paper laminated with a vinyl chloride resin layer, such as a vinyl wallpaper, can be used as the substrate.

The pattern is formed by using an ordinary ink composition and an appropriate printing method according to the properties of the substrate. The binder of the ink is selected according to the material of the substrate, for example,
Examples thereof include nitrocellulose resin, acrylic resin such as MMA, vinyl chloride / vinyl acetate copolymer resin, cellulose acetate resin, and cellulose acetate butyrate resin.

Although any printing method may be used, gravure printing, offset printing, offset gravure printing, silk screen printing and the like are usually used. As the usual ink composition, a vehicle obtained by kneading a pigment or dye colorant, a plasticizer, a stabilizer, other additives, and a diluent into a vehicle is used, and as the vehicle, for example, ethyl cellulose, ethyl hydroxycellulose, Cellulose acetate propionate, cellulose derivatives such as cellulose acetate, polystyrene, styrene resin such as poly-α-methylstyrene and styrene copolymer resin, polymethyl methacrylate, polyethyl methacrylate, polyethyl acrylate, polybutyl acrylate, etc. Homo or copolymer resin of acrylic or methacrylic resin,
Rosin, rosin-modified maleic acid resin, rosin-modified phenolic resin, rosin ester resin such as polymerized rosin, polyvinyl acetate resin, coumarone resin, vinyltoluene resin,
One or more of vinyl chloride resin, polyester resin, polyurethane resin, butyral resin, shellac, gum arabic, acaloid, mastic, etc. are selected and used. The colored layer can be provided in the same manner as the above pattern.

The decorative sheet usually has a protective layer as the uppermost layer. Regarding the protective layer, it is preferable to add a release agent such as wax or silicone to the same composition as the ink composition for providing a pattern so that the surface of the protective layer has releasability. Alternatively, as the protective layer, a transparent resin sheet such as a transparent polyvinyl chloride resin sheet may be attached.

In this way, if a decorative sheet having a pattern in which at least one of hue, density or saturation changes in a stepwise or stepless manner can be made, the decorative sheet is attached to a substrate such as a vinyl chloride board to make up the makeup. A decorative plate having gradation is obtained by dividing the decorative plate into small pieces having the same size to form a large number of small decorative plate pieces, and adhering the small decorative plate pieces in line on a base such as plywood.

(Application Example 1) A transparent polyvinyl chloride resin film having a thickness of 0.1 mm and a width of 920 mm, which is colored in brown, is overprinted with a wood grain pattern of oak (oak tree) using two printing plates. Then, using a gradation plate with gradation in the width direction as shown in Fig. 2 (a),
A brown ink was used to create a decorative sheet with a left and right density difference.

The surface of a vinyl chloride plate having a thickness of 3 mm and a width of 1000 mm was overlaid with the printing surface of the decorative sheet obtained above, heat-pressed and heat-sealed, and then the width in the direction perpendicular to the flow direction of the wood grain was obtained. A small piece of a decorative plate having a width of 100 mm and a length of 916 mm was produced. When the obtained decorative veneer pieces were arbitrarily arranged and pasted on a plywood base, changes in color density due to printing using a gradation plate appeared randomly, and the appearance was the same as when a natural veneer was applied. was gotten.

[0022]

INDUSTRIAL APPLICABILITY According to the present invention, one kind of wood grain pattern is printed on the surface of a substrate, and at least one of hue, density or saturation changes stepwise or steplessly above or below the pattern layer. Since another printed layer is formed, the decorative sheet obtained by this is attached to the substrate to form a decorative plate, and a large number of small decorative plate pieces with different colors can be prepared simply by cutting this decorative plate into a large number of small pieces. Because you can do it, you can get a variety of decorative boards by applying them randomly and enjoy the natural color change. Therefore, as in the past, printing inks and printing plates of various different compositions are prepared to prepare various decorative boards with different hues, and after these are made into decorative board pieces, those with different hues are selected and combined and shipped. It has a remarkable effect that a troublesome method such as selecting at the time of use becomes unnecessary. Moreover, in the practice of the present invention, the pattern plate and the gradation plate are formed separately, so that by using only the pattern plate, a general decorative board having a pattern without gradation can be obtained without newly manufacturing the pattern plate. There is also convenience. Also, at least one of hue, density or saturation
It is convenient that the present invention can be carried out by using a patterned plate of a decorative sheet for general decorative boards only by creating a gradation plate in which one gradually or steplessly changes.

[Brief description of drawings]

FIG. 1 is a plan view illustrating a decorative sheet on which a wood grain pattern is used according to the present invention.

FIG. 2 is a graph showing gradation of a decorative sheet used in the present invention.

[Explanation of symbols]

 1 Decorative sheet 2 Wood pattern 3 Margin

Claims (1)

[Claims] 1. A kind of wood pattern is printed on the surface of a base material,
At least one of the hue, density or saturation of the pattern is formed by forming another printing layer above or below the pattern layer in which at least one of hue, density or saturation changes stepwise or steplessly. Create a decorative sheet that changes in a stepwise or stepless manner, and attach this decorative sheet to a substrate to make a decorative plate, and make this decorative plate into rectangular pieces of the same size with the longitudinal direction of the grain direction. A method for manufacturing a decorative board, which comprises dividing a large number of small decorative board pieces into pieces and adhering the small pieces of the decorative board in line on a base such as plywood.