JPS60120002A - Manufacture of artificial decorative veneer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a method for manufacturing artificial decorative veneers used as decorative materials for interior building materials.

[Background technology]

BACKGROUND ART Wood with wood grains expressed on its surface has traditionally been used favorably as interior material for houses. However, using a large amount of natural wood would be extremely expensive, so generally, building materials with artificial decorative veneer affixed to the surface are mainly used. This artificial decorative veneer is made as follows.

In other words, the mouth.

- After degreasing and decolorizing wood veneers obtained by talislicing, dyeing them, laminating the obtained dyed veneers via adhesive, pressure forming to obtain a composite flitch, and slicing this. It is obtained by

In the artificially decorated veneer obtained in this way, the summer wood portion (wood grain) has been expressed by dyeing alone or by adding pigments to the adhesive. However, due to negative gradients occurring during dyeing, or due to dyeing and darkening of the areas where the adhesive has penetrated, as shown in Figure 1, the artificial decorative veneer 1
However, there were disadvantages in that the summer wood portion 2 appeared thick and negative slopes 3 were formed on both sides of the boundary line of the veneer (summer wood portion 2).

On the other hand, in order to create different shading in the color of the summer material, pigments are added to the adhesive that forms the summer material, and the adhesive is applied using multiple roll coaters, but with this method, The drawback was that it was difficult to create shading differences in the length direction. Furthermore, when it comes to imparting changes such as wideness and narrowness to the summer material IJ, there is also the problem that changing the amount of adhesive applied alone is insufficient.

In addition, there are other ways to express summer wood, such as dyeing sliced veneer and pasting it with spring wood veneer.
Alternatively, methods such as laminating the veneers to make a flitch, slicing this and pasting it with the spring wood veneer are used. There were problems in that there was little degree of moderation within a tree ring, and the cost increased due to an increase in the number of steps.

[Purpose of the invention]

This invention was made in view of these circumstances,
The purpose of this invention is to make the summerwood part and the transitional part of the summerwood clear, and to give changes in the shade of the summerwood color or the width and narrowness of the summerwood within one tree ring. [Disclosure of the Invention] Inventor As a result of intensive studies to achieve the above object, they have completed the present invention.

This invention prevents the penetration of adhesive into the surface of the wood veneer opposite to the adhesive-applied surface when laminating and slicing a large number of wood veneers to obtain an artificial decorative veneer. The gist of this paper is a method for manufacturing artificially decorated veneers, which is characterized by forming a synthetic resin emulsion film. This will be explained in detail below.

The manufacturing method of the artificially decorated veneer according to this invention is as follows:
It is done by a different method.

In the first method, rotary wood veneer or sliced wood veneer that has been pretreated or bleached is first prepared.

A synthetic resin emulsion such as acrylic resin, polyurethane resin, polyvinyl alcohol resin, etc., is applied to one side of this wood veneer. Next, a dye is applied to the surface of the synthetic resin emulsion opposite to the applied surface, followed by heat treatment and drying. The obtained veneer was dyed and a synthetic resin emulsion film was formed on one side. Adhesive is applied to the opposite side of this dyed veneer from the side to which the synthetic resin emulsion was applied, and on top of this, the side on which the synthetic resin emulsion film is formed of another dyed veneer obtained in the same way is overlapped and laminated. do. This operation is repeated in sequence to stack a large number of dyed veneers, which are assembled to obtain an assembled flitch, which is then sliced to obtain an artificially decorated veneer.

The resulting artificially decorated veneer is made by forming a synthetic resin emulsion film on one side of the wood veneer, which suppresses the penetration of the adhesive into the veneer and makes one side of the summer wood part clear (sharp). There is. Therefore, the artificial decorative veneer 4a can express a thin, dark-colored summer wood portion 5a as shown in FIG. This summer wood section is 1. Various color changes and neutralization can be freely imparted by changing the dye concentration and dye coating amount.

Next, the second method uses a veneer of material that has just been rotary or sliced, or a veneer that has been bleached or dyed. The synthetic resin emulsion described above is applied to one side of these veneers. Next, a surface heat treatment is performed to form a synthetic resin emulsion film. Thereafter, an adhesive is applied to the surface opposite to the surface to which the synthetic resin emulsion is applied, and the flitches are laminated and assembled in the same manner as in the first method, which is then sliced. A dye is applied to the obtained sliced veneer and dyed by heat treatment in a steam atmosphere.

After this, the surface is subjected to secondary processing by painting with transparent resin, etc., to obtain an artificial veneer.

The resulting artificially decorated veneer has a synthetic resin emulsion film formed on one side of the wood veneer, so the penetration of the adhesive is suppressed on one side where the film is formed, and the adhesive penetrates on the other side. . As a result, as shown in FIG. 3, the artificial decorative veneer 4b expresses a clearer (sharp) summer wood part 5b when adhesive penetration is suppressed, and the summer wood area 5b when adhesive penetration is suppressed. The transition part 6 is now expressed. In particular, in the case of the second method, since the laminated sliced veneer is printed, the resulting artificially decorated veneer not only has a sharp wood grain on one side, but also the transition area from the summer wood part 5b to the summer wood transition area. By 6, it becomes possible to clearly express patterns similar to natural ones, such as concentrated conduit-like patterns.

Next, in the third method, rotary or sliced wood veneer is prepared. After degreasing and decolorizing this according to the usual process, the entire surface is dyed in the spring wood color. A synthetic resin emulsion is applied to one side of the obtained dyed veneer,
Apply staining solution unevenly to the other side. That is, for example, dark and light dyed negative waves are applied so that dark and light colored areas alternate in a diagonal pattern, or a staining solution of a constant concentration is applied partially. Next, heat treatment and drying are performed. The obtained dyed veneer has a synthetic resin emulsion film formed on one side. Thereafter, an adhesive is applied to the surface opposite to the surface to which the synthetic resin emulsion was applied, and lamination is performed in the same manner as in the first method to obtain a flitch assembly, which is then sliced to obtain an artificial decorative veneer.

The resulting artificially decorated veneer has a synthetic resin emulsion film formed on one side of the dyed veneer, which suppresses the penetration of adhesive into the veneer and makes one side of the summer wood part sharp. .

Moreover, since the pre-dyed part is used as the spring wood part and the printing and coloring is applied unevenly from above, as shown in FIG. A dark colored area 7a due to post-printing is formed in the transition area, resulting in a wood grain that is similar to that of natural wood. This is because this dark colored portion 7a appears as a pattern change in shading or a wide/narrow change in the summer wood portion 5C.

The heat treatment temperature after applying the synthetic resin emulsion in the present invention is not particularly limited as long as a film is formed. The point is that the penetration of the adhesive into the veneer can be suppressed by film formation. Therefore, a film may be formed during dyeing.

(Example 1) Almaciga rotary lace thickness 1.0l11m
Apply 50% of acrylic resin emulsion to one side of the bleached veneer.
Apply so that it is ±10g/ryr, and 0°1% on the other side.
A dye solution of 50±10 g/d of Ranil Yellow G was applied. Next, the veneer is heat-treated for 30 minutes in a steam atmosphere at 90-95°C to dye the dye, and the acrylic resin emulsion is cured to form a film. The veneer is dried, and the surface opposite to the emulsion-coated surface is coated. It was coated with adhesive, pressure molded, and sliced. The artificially decorated veneer obtained was able to express the dark color and thin summer wood part as shown in Figure 2.

(Example 2) Thickness of rotary lace of red lauan 1. Onrm
Acrylic resin emulsicone was applied to one side of the easily dyed pretreated veneer at a concentration of 50±10 g/rd, and the other side was coated with 50 g/rd of 0.1% Cinnafast Brown 2GL dye solution.
It was coated to give a weight of ±10g10f. Then 90~
Heat treatment in a steam atmosphere at 95°C for 3 hours to dye the dye, harden the acrylic resin emulsion to form a film, then dry the veneer, and apply adhesive on the side opposite to the emulsion coated side. It was coated, pressure molded, and sliced.

The obtained artificially decorated veneer was uniformly dark in color and was able to express a thin summer wood part as in Example 1.

(Example 3) In Example 1, two types of decolorized veneer panels coated with acrylic resin emulsion on one side were prepared, and 0.1% and 0.5% Lanyl Yellow G was applied on the other side of the veneer panels. Heat treatment and treatment were carried out in the same manner as in Example 1, except that the dye solution was applied to
Dry. These veneers were combined, adhesive was applied to the surface opposite to the surface to which the emulsion was applied, pressure molded, and sliced. As shown in Fig. 5, the obtained artificially decorated veneer 4d has a veneer coated with 0.1% dye solution to form a dark colored and thin summer wood portion 8a, and 0.5% dye solution was coated on the veneer 4d. The veneer formed a dark colored and slightly thick summer wood portion 8b, and was able to express varying wood grains.

(Example 4) On one side of a rotary veneer of white lauan with a thickness of 1 mm,
An acrylic resin emulsion was applied at a weight of 50±10 g/d and heat treated in a dryer at 60±5°C. Apply moisture-curing adhesive XA-155 to the other side of the veneer at 90±10
Coat and laminate so that it becomes g/rrf, 15-16k
An assembled flitch was obtained under pressure conditions of g/cIil. A 0.1% Cinnafast Brown 2GL dye solution was applied at 85 g/rrf on both sides of the veneer obtained by slicing the flitch. Thereafter, it was left in a steam atmosphere at 90 to 95°C for 1 hour and 30 minutes to dye. The resulting artificially decorated veneer had a clear summer wood transition area.

(Example 5) A urethane resin emulsion was applied at 50±10 g/rrr on one side of a decolorized veneer of Merapi with a thickness of 1.0 am.
Heat treatment was performed in a dryer at 00±10°C. On the other side of the veneer,
The thermosetting SB type adhesive was coated and laminated at 120±10 g/smoothly and cured in an atmosphere of 70±5° C. under pressure conditions of 10 to 12 kg/cn to obtain an assembled flitch. 0.0 on both sides of the veneer obtained by slicing the flitch.
100 ± 10 g of dye solution of 5% Lana First Yellow GL and 0.01% Lana First Red 2 GL
rri coating and dyeing in a steam atmosphere at 90 to 95°C. The resulting artificially decorated veneer had a clear summer wood transition area.

(Example 6) Aius rotary veneer with a thickness of 1.0 mm was mixed with 0.02%
High temperature staining for 3 hours in Cinnafast Brown 2GL dye. An acrylic resin emulsion was applied to one side of the obtained dyed veneer at a weight of 50±10 g/rrr. Next, as shown in FIG. 6, a coating of 0.1
% of Cinnafast Brown 2GL dye solution was applied to the diagonal running rows as colored areas 10, and then dyed by processing in a steam atmosphere at 90 to 95° C. for 60 minutes. After drying this veneer, adhesive was applied to the surface opposite to the emulsion-coated surface, laminated and pressure-molded, and sliced. As shown in Fig. 4, the obtained artificially decorated veneer was able to express changes in the shading pattern and changes in the summer wood part in one summer wood part (annual ring).

(Example 7) Acrylic resin emulsion was applied at 50±10 g/n on one side of Almaciga decolorized veneer with thicknesses of 0.81 and 1.0 mm.
(Next, as shown in No. 7-), apply 0.0% of Lana First Brown 2GL to the other side of the dyed veneer 9b.
05% dye solution is used as the light color part tia, and 0.1% of the same dye
A dye solution was applied to each diagonal row as a dark colored portion 11b. Next, the dyeing was carried out by heat treatment for 60 minutes in a steam atmosphere at 90 to 95°C. After drying this veneer, adhesive was applied to the surface opposite to the emulsion-coated surface, laminated and pressure-molded, and sliced. As shown in FIG. 8, the obtained artificially decorated veneer 4e has no accumulation caused by the light-colored part 12a and the dark-colored part 12b in one summer wood part (annual ring), and changes in the summer wood part. [Effects of the Invention] This invention provides the following advantages: when obtaining artificial decorative veneers by laminating and slicing a large number of wooden veneers with adhesive, On the opposite side, a synthetic resin emulsion film is formed to prevent the penetration of the adhesive, so the resulting artificially decorated veneer has a synthetic resin emulsion film that prevents the penetration of the adhesive used during assembly. , it becomes possible to express clearly (sharply) one side of the summer wood part. Furthermore, changes in shading within a single summerwood section, changes in width and narrowness within a summerwood section, etc. can also be expressed as weak areas. Moreover, since the veneer is strengthened by the synthetic resin emulsion film, damage such as cracks and chips during handling and defects during slicing can be reduced.

〔reference〕

Conventionally, the color distribution of the decorative veneer has been used to make the color change of the decorative veneer more similar to that of natural veneer.

However, this method has a problem in that the color tone of the dyed veneer is not necessarily the intended color tone.

In such a case, you can do the following:

That is, as shown in FIG. 9, for example, a portion 14a with a high moisture content and a portion 14b with a low moisture content are formed on the material veneer 13 to impart a non-uniform distribution of moisture content. This non-uniform water content distribution can be changed into various shapes as desired.

Various methods can be used to impart non-uniform moisture content distribution to the veneer, such as a roll coater or two drops applied with a brush. The method is not particularly limited. When dye is applied to the material veneer which has been given a moisture content distribution in this way using a roll coater as usual and heat dyed, the moisture content of the dyed veneer 15 is changed as shown in FIG. The high part becomes the light color part 16a, and the part with low water content becomes the dark color part 16.
It becomes b. By using such a method, a decorative veneer having a desired color tone can be obtained.

(Reference Example) Using a roll coater, a material veneer was coated with a moisture content of 150% in areas with high moisture content and 10% in areas with low moisture content.
A non-uniform distribution of water content was formed so that the water content was 0%. This veneer was coated with dye and dyed by heating. The color difference ΔE between the high moisture content area and the low moisture content area of the dyed veneer was 35. The decorative veneer obtained using this dyed veneer was rich in color tone changes.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional artificially decorated veneer, Figures 2 to 5 are perspective views of an artificially decorated veneer according to the present invention, and Figures 6 and 7 are partially colored. Figure 8 is a perspective view of an artificially decorated veneer according to the present invention, Figure 9 is a perspective view of a material veneer, and Figure 10 is a perspective view of a dyed veneer. FIG. 4a, 4b, 4c, 4d, 4e - artificial decorative veneer 5a,
5b, 5c, 8a, 8b--Summer material section 6...Summer material transition section 9a, 9b...Dyed veneer 10...Colored section
11a, 12a...-light colored part 7a, llb, 12b...
...Dark colored area

Claims (1)

[Claims] (Li) When obtaining an artificial decorative veneer by laminating and slicing a large number of wood veneers with an adhesive, the adhesive is applied to the surface of the wood veneer opposite to the adhesive-applied surface. A method for manufacturing an artificially decorated veneer, characterized by forming a film of a synthetic resin emulsion that prevents penetration of the veneer. (2) The veneer obtained after slicing is subjected to printing and dyeing, as described in claim 1. A method for producing an artificially decorated veneer. (3) After the film is formed and before the adhesive is applied, printing and dyeing is performed on the surface opposite to the surface on which the synthetic resin emulsion film is formed. (4) The method for producing an artificially decorated veneer according to any one of claims 1 to 3, wherein the film formation is performed by applying an emulsion and heat treatment.