JP2000271903A - Veneer with grain pattern and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a veneer with a grain pattern having a profundity and a taste which closely resemble those of a natural precious wood by delicately gradating a color tone in the transitive part of a veneer texture from a pale-colored wood to a deep-colored wood. SOLUTION: A colored adhesive is applied to the first surface to a material veneer using a double spreader, then a colorless adhesive is applied to the second surface and a laminated block obtained by alternately superposing pieces of the material veneer over each other and bonding them in a laminated fashion, is cut in a direction crossing the laminated face at an arbitrarily selected angle to obtain the veneer with a desired grain pattern. Thus a coloring agent contained in the colored adhesive applied to the first surface of the material veneer showing the pale color 7, penetrates from the first surfaced side of the veneer, and a color tone gradation 9 appears on the first surface of the veneer. On the other hand, the colorless adhesive is applied to the second surface of the veneer and therefore, the penetration of the coloring agent contained in the adhesive from the lower side is inhibited. Consequently, no gradation is generation on the second surface of the veneer and the veneer with a grain pattern 8 closely resembling a natural precious wood is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a fitting, a wall storage,
The present invention relates to a decorative veneer of a wooden veneer used for surface storage of entrance storage, other housing equipment, furniture, flooring materials, wall materials, ceiling materials, and other interior building materials.

[0002]

2. Description of the Related Art Conventionally, surface decorative materials used for housing equipment such as fittings and furniture in a house, and interior building materials such as flooring and wall materials include resin decorative boards such as PVC, polyester, dup, and print. Veneer veneer made of natural precious wood is often used, and it has been loved for generations since ancient times for the realism and deep taste of wood, which is not an artificial product such as a resin veneer, but only a real one like natural precious wood. I have continued. However, in recent years when the depletion of natural resources and global environmental protection are being called out, it is becoming impossible to use natural precious wood luxuriously as in the past, and decorative veneers of natural precious wood are becoming expensive and rare. .

[0003] Natural precious wood is not only becoming expensive and scarce, but the quality of natural precious wood continues to decline year by year, and the actual value of wood cannot be obtained no matter how much money is loaded. is there. Zelkova, oak, cherry,
High-grade materials such as cypress and cedar are difficult to obtain, and even straight-grained wood grain and beautiful bamboo-mushroom grain are hard to see unless they are made of PVC or printed resin.

Conventionally, artificial veneer veneers have been used in place of natural veneer veneers instead of natural veneer veneers. Artificial makeup veneer is a veneer obtained by thinly slicing natural wood, which is inexpensive and available in large quantities.
Bleaching, dyeing and coloring as necessary, laminating and bonding a large number of these to produce a flitch, slicing it in the direction crossing the lamination surface, and decorative veneer or artificial veneer very similar to natural precious wood Is what you get.

[0005]

The artificial veneer conventionally used is artificially produced by simply laminating a dark colored veneer veneer and a light colored veneer veneer alternately with an adhesive. There is no transition between the light spring wood part and the dark fall wood part and no transition part from the dark fall wood part to the light spring wood part. The part was too clear as if drawn with a ruler, and the artificial feeling could not be overwhelmed.

Further, the thickness of the grain of the autumn wood part and the spring wood part is also determined by the width of the veneer, becomes uniform, and expresses the density of the grain due to the thinness of the grain width as seen in natural precious wood. Instead, it had to be a very artificial grain.

Conventionally, by sandwiching and laminating a fibrous material such as nonwoven fabric, paper, etc. between a veneer for autumn and a veneer for spring, the conduit portion of a natural hardwood is expressed. In addition, the ingenuity of dyeing and coloring of veneer material was used to express the deep taste of natural precious wood and the delicate change in concentration at the transition from spring to autumn wood, that is, gradation. However, the concentration of natural precious wood gradually increases at the transition from the spring lumber to the autumn lumber and a gradation is seen, but at the transition from the autumn lumber to the spring lumber, The density change of the color tone is relatively sharp, and the boundary is clear.

As described above, it is extremely difficult to form a gradation on one side and to clarify the boundary on the other side. It has been difficult to devise such a method that only the transition to the lumber is applied, and conversely, the transition from the autumn to the spring is not graded. Gradation was attached to both sides, or the boundaries had to be clear on both sides.

Furthermore, the width of the grain is determined by the thickness of the original veneer, and is uniform in the length direction of the grain expressed,
I couldn't stop feeling artificial. Either way, the more you devise, the more expensive it is, and the reality of natural precious wood is not one step away, and it was cheaper to get expensive natural precious wood without hassle. The present invention is to solve the above problems by means described below.

[0010]

SUMMARY OF THE INVENTION The present invention applies a colored adhesive thinner than the autumn material color to the surface of a material veneer exhibiting an autumn material color and a material veneer exhibiting a spring material color. A colorless adhesive is applied, and a plurality of these are alternately laminated and adhered, and after forming a laminated block, a wood grain pattern veneer obtained by cutting the laminated block in a direction crossing the laminated surface at an arbitrary angle and First, a material veneer exhibiting the color of autumn material is designated as a material veneer for autumn material, a material veneer exhibiting the color of spring material is designated as a material veneer for spring material, and they are prepared. A colored adhesive is applied to only one surface, while a colorless adhesive is applied to the opposite back surface.

The color tone of the adhesive is the same as or similar to the color of the autumn material, and its density is slightly thinner than the color of the autumn material. The color tone density of the adhesive may be appropriately adjusted depending on the amount of the adhesive to be applied. The thickness is made thinner when applying a relatively large amount, and darker when applying a relatively small amount. However, it is necessary to make the color tone density slightly thinner than the color tone density of the material veneer exhibiting the autumn color. Otherwise, the color tone density of the material veneer itself will be too dark, which will make the material uncomfortable.

A colorless adhesive is applied to the back side of the material veneer, which means that the color tone density change, that is, the gradation appears only at the transition from the spring wood part to the autumn wood part, and from the autumn wood part. This is because it will not appear at the transition to the spring lumber department. This is closer to the grain of the natural precious tree, and the reality is expressed.

Further, referring to the drawings, FIG.
Is coated with a colored adhesive (3) on one surface of the material veneer (1) exhibiting the color of autumn material, and a colorless adhesive (4) is applied on the other surface of the veneer, thereby forming a material veneer for autumn material. . Also,
A colored adhesive (3) is applied to one surface of a veneer veneer (2) exhibiting a spring color, and a colorless adhesive (4) is applied to the back surface of the opposite side.
Is applied to form a spring veneer veneer.

FIG. 2 is a schematic view showing a state before pressing obtained by alternately laminating a material veneer for autumn material and a material veneer for spring material.
(5) shows a laminated block before pressing.

FIG. 3 shows a grain-grained veneer (8) obtained by pressing the laminated block (5) before clamping and then cutting the laminated block (5) in a direction crossing the laminated surface at an arbitrary angle. . In the figure (9), the colored adhesive (3) permeates the spring material part (7),
The gradation of the color tone that appears from the spring wood part (7) to the autumn wood part (6) is shown. As described above, the gradation of the color tone appears in the transition from the spring timber to the autumn timber for the following reason.

That is, the colored adhesive applied to the surface of the material veneer exhibiting the spring material color permeates from the surface of the material veneer exhibiting the spring material color. Then, the permeation density is high near the surface of the veneer, and the permeation density decreases as it goes deeper in the thickness direction of the veneer, so that a so-called gradation of color tone occurs.
Further, since it is a natural material, the penetration and diffusion of the coloring dye or pigment in the colored adhesive (3) into the veneer material veneer is not uniform, and the degree of permeation and diffusion varies somewhat.

For this reason, the width of the gradation (9) of the color tone is not uniform even in the longitudinal direction of the grain, and is not uniform between every grain. For this reason, the thickness of the spring wood part (7) is expressed, and a more natural wood grain taste can be expressed. In the figure, (10) indicates a boundary from the autumn lumber to the spring lumber, and there is no gradation in this part. The reason is as follows.

That is, the colorless adhesive applied to the back surface of the material veneer exhibiting the spring material color is the spring material color of the colored adhesive applied to the surface of the material veneer exhibiting the autumn material color of the layer immediately below it. The boundary from the autumn lumber (6) to the spring lumber (7) does not show any gradation and is very similar to natural precious wood, A clear boundary portion is expressed, and a wood grain pattern veneer (8) very similar to a more natural precious wood is completed.

In addition, since the colored adhesive (3) from the surface side of the material veneer (1) exhibiting the color of autumn material is adjusted to be thinner than the veneer color, even if it permeates, it is visually recognized. It is almost invisible, and has little effect on the grain pattern. From this, material veneer that shows autumn wood color (1)
It is only necessary to apply a colorless adhesive on both sides, but it is necessary to alternately apply another adhesive to the material veneer exhibiting the autumn color and the material veneer exhibiting the spring color, It becomes complicated and causes a cost increase unnecessarily.

The present inventors have conducted intensive studies and, as a result, have solved this problem by the method shown in FIG. That is, FIG. 4 shows a method of applying an adhesive having a different color tone on the front surface and the back surface of the veneer using a double-sided spreader capable of applying the adhesive on both surfaces of the veneer.

In the drawing, (11) is a top surface application roll, (12)
Indicates a lower surface application roll. When a material veneer exhibiting an autumn color and a material veneer exhibiting a spring color are alternately charged into a double-sided spreader by this method, a color adhesive (3 ), And a colorless adhesive (4) is applied to the back surface, and they are alternately deposited. If appropriate pressing pressure, temperature, and time are applied, the laminated block is completed.

The laminated block is cut in a direction crossing the laminated surface at an arbitrary angle to complete a desired grain-grained or wood-grained veneer (8). In this way, the two types of material veneer, the autumn veneer veneer and the spring veneer veneer, eliminate the need to alternate the adhesive for each veneer, simplifying the manufacturing process and greatly reducing costs. It became. Furthermore, a grain pattern of wood grain appeared only on one side of the spring lumber, and a wood grain veneer very similar to a natural precious wood was obtained.

Further, due to subtle variations in the degree of penetration of the coloring agent in the adhesive, the width of the spring lumber also changes finely and finely, as seen in a natural precious wood, thereby producing a natural taste.

The present invention is also directed to a veneer veneer which is colored using a fall color dye or pigment after bleaching the veneer veneer to produce a fall veneer color. Alternatively, a single veneer material that exhibits a spring material color with or without coloring using a pigment may be used.

That is, a material veneer exhibiting autumn color and a spring veneer color may be selected from inexpensive low-grade materials, or after inexpensive material veneer is bleached and bleached, The material veneer may be colored with a dye or a pigment to have an autumn material color or a spring material color, and may be a material veneer exhibiting the autumn material color or a material veneer exhibiting the spring material color.

Further, as a material veneer exhibiting a spring material color, an inexpensive low-grade material which has been bleached and bleached may be used. What is necessary is just to select and adjust appropriately according to the color tone and density of the grain of the natural precious wood to be expressed.

When the laminated block is sliced thinly, various wood grain veneers can be obtained by cutting in a direction crossing the laminated surface at an arbitrary angle. That is, the grain may be expressed by slicing in a direction perpendicular to the lamination surface, or the grain may be widened by cutting at an appropriate angle to express a coarse grain. In addition, a rotary race or a hard race
A different grain can be obtained by cutting with a floor lathe, and a curved laminated block with a curved surface can be obtained by pressing with a template that is curved from the top and bottom when laminating material veneers. If this is sliced almost in parallel with the lamination surface, a grain pattern can be expressed. In addition, if you slice the slice with a tilt angle, you will be able to express Ooi-Sho.

[0028]

According to the present invention, a colored adhesive thinner than the autumn material color is applied to the surface of the material veneer exhibiting the autumn material color and the material veneer exhibiting the spring material color, and colorless adhesive is applied to the back surfaces thereof. Apply the agent. As a result, the colored adhesive permeates the surface of the veneer veneer exhibiting the spring color. At this time, the permeability near the surface of the veneer is relatively high, and as it goes deeper in the thickness direction of the veneer, the permeation concentration decreases, and a so-called color gradation is formed at the transition from the spring material to the autumn material. Can be generated.

Further, since the material veneer is a natural material, the permeation and diffusion of the colored dye or pigment in the colored adhesive into the veneer for spring material is not uniform, and the degree of permeation / diffusion varies slightly. For this reason, the width of the gradation of the color tone is not uniform even in the longitudinal direction of the grain, and the grain is not uniform between every grain. For this reason, the thickness of the spring wood portion is expressed, and a more natural wood grain taste can be expressed.

Further, the colored adhesive applied to the surface of the material veneer exhibiting the autumn color of the layer immediately below it is a colorless adhesive applied to the back surface of the material veneer exhibiting the spring color immediately above it. Blocked by the agent, permeation from the back side to the veneer veneer exhibiting the spring color is suppressed. Therefore, no gradation occurs on the back side of the single veneer material exhibiting the color of the spring material, that is, on the transition from the autumn material portion immediately below to the spring material portion immediately above. Therefore, a wood grain veneer very similar to a natural precious wood can be obtained.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, tree species that can be obtained in large quantities at a low price as a material veneer exhibiting autumn wood color include:
Agatis, Red Meranti, Garogalo, Apito, Yellow Meranti, Nato, and the like. Tree species that can be obtained inexpensively and in large quantities as a material veneer exhibiting spring color include ayusu, birthwood, white silis, gelton, lamin, magashiro, john cong, gallo gallo and the like.

The thickness of the veneer is determined depending on whether the grain of the natural precious wood to be expressed is straight grain or board grain, and furthermore, the width of the grain is about 0.2 m to 3.0 mm.
The degree is appropriate. If the wood grain to be expressed is a wood grain, the thickness of the material veneer must be relatively thin, or the curved laminated block will be sliced almost parallel to the lamination surface, so the wood grain width will widen and it will become a large wood grain Would. A single veneer having a thickness of about 0.2 mm to 0.5 mm is suitable for the grain expression.

The thickness of the material veneer for expressing straight grain, which is recognized as a rare value in natural precious wood, is 0.3 mm to 1.0 mm.
It is about 0 mm, and some of them have a relatively large straight grain width, such as zelkova or oak.
A thickness of about 3.0 mm is required.

When the thickness is 0.2 mm or less, when applying the adhesive,
Since the rigidity of the veneer is small, it cannot be manufactured because it is wrapped around the coating roll, and if it is 3.0 mm or more, the grain becomes large and a beautiful grain cannot be obtained. Desirable material veneer thickness is 0.
The range is about 5 mm to 2.0 mm. In order to make it look more like a natural precious wood, the veneer veneer may be set to be relatively thick and the veneer veneer may be set to be relatively thin. Therefore, the material veneer for the spring material may be set in the range of 1.0 mm to 2.0 mm, and the material veneer for the autumn material may be set in the range of 0.5 mm to 1.0 mm.

The suitable material veneer tree species is determined according to the color tone of the autumn lumber and the spring lumber, the shape of the conduit, and the arrangement of the natural precious wood to be expressed. The thickness of the veneer material for the autumn material and the veneer material for the spring material are determined depending on whether the grain to be expressed is a straight grain or a wood grain, and how much the grain width of the autumn and spring wood is represented. The thickness of the veneer material for the spring material and the autumn material is not limited to one type, and two or more types may be prepared. At this time, if there is no appropriate color tone, the material veneers for autumn and spring materials are bleached and bleached, and then colored with a wood dye or pigment of the desired color. Depending on the color tone to be expressed, the veneer for spring wood need not be dyed and colored if the bleached and bleached one is more aesthetically pleasing.

Next, as the laminating adhesive, in the case of a wet veneer, a wet-curable urethane-based adhesive is usually used. Considering slicing in a later step, wet veneer is more suitable.
Usually, the water content of the wet veneer is desirably about 20% to 60%. If it is 20% or less, the single plate is likely to be ablated and bent, and the lamination becomes difficult. On the other hand, if the water content is too high, poor adhesion due to a decrease in adhesion performance and minute surface cracks occur over time in the grained veneer veneer after slicing. Further, since the curing time of the moisture-curable urethane-based adhesive varies considerably depending on the moisture content of the veneer, it is necessary to minimize the variation in the moisture content of the veneer.

The colorant to be mixed into the adhesive may be any as long as it can be blended with the moisture-curable urethane-based adhesive. Suitable. It is advisable to color the target autumn wood color of the natural precious wood with a wet-curable urethane-based adhesive using four pigments or dyes of white, yellow, red and black. The mixing ratio of the colorant to the adhesive varies depending on the type and composition of the colorant, and also depends on the target color tone of the natural precious wood and its concentration, but is usually about 0.1 to 5.0%. .

In the case of a single veneer having a thickness exceeding 1.0 mm, the amount of adhesive applied is 110 to 16 for each of the front and back surfaces of the veneer.
0 g / m ^2, it is appropriate 220~320g / m ² on the front and back surfaces total. In the case of a thin veneer having a thickness of 1.0 mm or less, the front and back surfaces of the veneer are each 80 to 110 g / m ² , and the total of the front and back is 1
60-220 g / m ² is suitable.

Next, the upper surface application roller of the double-side application spreader is used.
Add a colored adhesive to the roll and a colorless adhesive to the roll applied on the lower surface.
To The veneer veneer veneer and the veneer veneer veneer with the colored adhesive applied to the front surface and the colorless adhesive applied to the back surface are alternately laminated and pressed to produce a laminated block. The pressing conditions are suitably a temperature of about 10 to 25 ° C., a pressure of about 5 to 10 kg / cm ² , and a pressing time of about 5 to 12 hours. In the case of a plate-like representation, it is necessary to laminate the material veneers in the width direction at the time of lamination.

The obtained laminated block is sliced into a slicer.
Alternatively, the laminate is cut into thin veneers in a direction that intersects the laminated surface at an arbitrary angle with a half-floor to produce a desired woodgrain veneer. A single-grain pattern veneer can be obtained by cutting the laminated surface at a large angle. Further, in the case of a plate-like expression, a curved plate-like veneer can be obtained by cutting the curved laminated block substantially parallel to the lamination surface.

[0041]

EXAMPLE A 180-piece Agate single plate having a thickness of 0.5 mm and a 180-piece single Ayuse plate having a thickness of 1.0 mm were prepared, and the Agate single plate was decolorized using hydrogen peroxide. It was dyed by dipping in an acid dye having the following composition at 98 ° C. and a pressure of 2.0 atm for 8 hours. After dyeing, the dye was immersed in a 1% surfactant solution to remove excess dye, and then washed with water to obtain a material veneer exhibiting autumn wood color.

Formulation of acid dye for Agathis veneer dyeing YERROR 0.5 g / liter (water) RED 0.9 g / liter (water) NAVY BLUE 0.6 g / liter (water) Dyeing assistant 9 CC / liter (water)

Next, the single use plate was decolorized using hydrogen peroxide, and then immersed in an acidic dye having the following composition at 98 ° C. under a pressure of 2.2 atm for 12 hours for dyeing. After staining
Excess dye was removed by immersion in a surfactant solution having a concentration of 1.5%, and then washed with water to obtain a material veneer exhibiting a spring color.

Formulation of Acid Dye for Aye Single Veneer Dyeing YERROR 0.07 g / liter (water) RED 0.08 g / liter (water) NAVY BLUE 0.008 g / liter (water) Dyeing aid 9 CC / liter (water) )

The above-mentioned dyed veneer is used in a water content of 30 to 50.
% By using a high-frequency dryer, and the conditioned single veneer was subjected to the subsequent laminating step.

Next, as a colorant, a pigment having the following composition was added to the moisture-curable urethane-based adhesive in an amount of 3.0% by weight%.
It was added and colored slightly lighter than the autumn wood color to be expressed to produce a colored adhesive.

Subsequently, a colored adhesive was introduced into the upper surface application roll of the spreader capable of being coated on both sides, and a colorless adhesive was introduced into the lower surface application roller.

Next, a material veneer exhibiting autumn color and a veneer veneer exhibiting spring color are alternately passed through the double-sided spreader in this order, and a colored adhesive is applied to the surface thereof and a colorless adhesive is applied to the back surface thereof. did. The coating amount is 100g /
m ² , and a total of 200 g / m ² .

Next, they are alternately deposited, and room temperature 20
° C., pressing pressure of 8 kg / cm ^2, and laminated and adhered under the conditions of pressing for 10 hours to prepare a laminated block.

Next, the laminated block was sliced in a direction intersecting the laminating surface to obtain a grain-grained single-grain pattern very similar to a 0.3 mm thick inner layer pine.

[0051]

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a state in which an adhesive is applied to both surfaces of a material veneer of the present invention.

FIG. 2 is a schematic view showing a laminated block of the present invention in a state before pressing.

FIG. 3 is a schematic view showing a wood grain veneer of the present invention.

FIG. 4 is a schematic view showing a production method of the present invention in which a colored and colorless adhesive is applied to the front and back surfaces of a material veneer.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Material veneer exhibiting autumn wood color 2 Material veneer exhibiting spring wood color 3 Colored adhesive 4 Colorless adhesive 5 Laminated block before pressing 6 Autumn wood part 7 Spring wood part 8 Wood grain veneer 9 Color gradation -Section 10 Boundary section from autumn lumber to spring lumber 11 Upper surface application roll 12 Lower surface application roll

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Noriaki Nakagawa 7-1 Toyoura-cho, Komatsushima-shi, Tokushima Pref. DA06 2B230 AA22 BA01 BA03 CC14 CC15 EA07 EA15 EB02 EB03 EB13 EB26 EB28 EB29 EC10 EC24 2B242 BA11 BA19 BA42 4F100 AP01A AP01B AP01C AP01D AP01E BA02 BA03 BA04 BA05 BA07 BA10A BA10C BA10D BA10E BA11 E46 E17H46

Claims (4)

[Claims] 1. A color adhesive which is colored thinner than the autumn material color is applied to the surfaces of a material veneer exhibiting an autumn material color and a material veneer exhibiting a spring material color, and a colorless adhesive is applied to the back surface. A plurality of these are alternately laminated and bonded to form a laminated block, and then the laminated block is obtained by cutting the laminated block in a direction crossing the laminated surface at an arbitrary angle. Board. 2. A material veneer is bleached and then colored with a dye or pigment of autumn material color to obtain a material veneer exhibiting autumn material color. After bleaching the material veneer, a dye or pigment of spring material color is obtained. Color using
The wood grain veneer according to claim 1, wherein the veneer is a material veneer exhibiting a spring color. 3. A colored adhesive thinner than the autumn color is applied to the surface of the material veneer exhibiting the autumn color and the material veneer exhibiting the spring color, and a colorless adhesive is applied to the back surface. A plurality of these are alternately laminated and bonded to form a laminated block, and then the laminated block is cut in a direction crossing the laminated surface at an arbitrary angle. Method. 4. A material veneer is bleached and then colored using an autumn color dye or pigment to obtain a material veneer exhibiting an autumn color. After bleaching the material veneer, a spring color dye or pigment is added. Color using
4. The method for producing a wood-grain veneer according to claim 3, wherein the veneer is a material veneer exhibiting a spring wood color.