JP2011025591A - Method for coloring woody decorative material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for coloring a woody decorative material which can provide a woody decorative material with higher woody feeling, when a sharper woodgraining contrast is required than that by a conventional coloring method of high pressure water vapor treatment, and also to provide a method for ensuring the light resistance of the woody decorative material when emphasizing the woody feeling. <P>SOLUTION: This coloring method includes: performing a heat coloring process for generating a polymerizable colored material with the high light resistance in lumber 2 by heating the lumber 2 by high pressure water vapor; after that, manufacturing a sliced veneer 2s by slicing the lumber 2; and applying a coating material P, obtained by diluting a coloring agent composed mainly of a white pigment with a diluent, to a surface of the sliced veneer 2s. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an improvement in a method for coloring a wooden surface decorative material.

  In general, in a method for producing a flooring or the like, a wooden surface decorative material is adhered to the surface of a base material in order to obtain a strong and scratch-resistant flooring while maintaining a natural feeling.

  For example, Patent Document 1 discloses that a medium-density fiberboard and a natural material flitch are alternately arranged in a mosaic turbulent manner and stuck together, and then sliced to obtain a wooden surface decorative material. There has been disclosed and proposed a flooring and a method for manufacturing the flooring that can be adhered to the surface of the material to obtain a strong and scratch-resistant flooring while maintaining a natural feeling.

  In addition, the surface of a woody surface decorative material such as a flooring material is generally subjected to a coating treatment with a colorant. However, in order to express the character of wood, a concave portion (for example, a ring material) of a wood canal existing on the decorative surface ) Has mainly been used for coloring the fabric (wiping fabric coloring). Although the light resistance is ensured by the coloring of the fabric, in recent years, a material (for example, a hole-spreading material) that does not have a concave portion of the road pipe is becoming mainstream, and it is difficult to express the wood-likeness with existing methods.

  In this way, if the wood species are not clear, or if you want to suppress variations in the base material color, coloring and painting the wood surface decorative material will increase the coloration and unravel the wood. In many cases, it is finished with a coloring that is so high that it becomes difficult, the grain of the tree species seems to disappear, the goodness of natural wood tends to disappear, and the finish that makes use of the veneer is often not achieved .

  In addition, if you try to make use of the grain of the material, the concentration of coloring must be reduced, but in this case, the veneer that is almost untreated will be discolored by light or heat, which may cause problems after construction. .

  In this way, wood surface decorative materials such as veneer are conventionally applied with a colorant after slicing wood to increase light resistance on the surface or to suppress variations in base color. However, when painting and coloring a tree species with unclear grain, the grain of the tree species disappears, the goodness of natural wood is lost, and the commercial value as a veneer is often impaired.

  In order to solve such problems, the present inventors have proposed a coloring method using heat treatment with high-pressure steam in Japanese Patent Application No. 2009-40459 and the like.

  According to this method, the high-pressure steam treatment produces a high-light-resistant polymerizable colored product (at this time, a low-light-resistant oxidized colored product is also generated as a by-product and deposited on the surface of the wooden product). The dark wood part is denser than the early wood part where the cells are sparse and the wood grain is emphasized, and it is not finished with a coloring that is so high that it is difficult to unravel the wood grain. The wood grain did not disappear and I was able to obtain a finish that made use of the goodness of natural wood.

  However, in order to increase the commercial value as a veneer, a surface for improving light resistance by applying paint or coating material to the sliced surface so that the color tone when colored by high-pressure steam pressure treatment does not change However, when producing veneers with consistent quality, there is a problem of temperature setting in high-pressure steam treatment, and the concentration of paint to be applied in surface finishing treatment. There are adjustments, and it is highly desirable to set these conditions to optimum values.

  In the present invention, as a result of intensive studies by the present inventors from such a viewpoint, the heating temperature of the wood is extremely important in the high-pressure steam treatment, and the temperature of the core portion is in the range of 110 ° C to 150 ° C. Until it is heated, and the formation of highly light-resistant polymerizable coloring matter inside the wood is remarkably promoted, so that even if it is on a tree such as a beach or beech where the grain is difficult to appear on the slice surface, the grain will not disappear The present invention has been achieved by obtaining the knowledge that the natural wood has been colored to make good use of it.

Japanese Patent Laid-Open No. 10-58406

  The present invention has been made in view of the above circumstances, and even in the case of a tree species with unclear grain or when it is desired to suppress variations in base color, the coloring is thick when trying to finish by coloring and painting. Therefore, it is possible to provide a coloring method for a wooden surface cosmetic material that does not finish with a coloring that is so high that it is difficult to unravel the grain, and that makes use of the goodness of natural wood without losing the grain of the tree species. It is aimed.

  It is another object of the present invention to provide a method for coloring a wooden surface decorative material that is less likely to be discolored by light or heat even when the concentration of coloring is lowered and is less likely to cause problems after construction.

  In particular, the present invention focuses on the heating temperature, which is the most important condition when coloring wood using heat treatment with high-pressure steam, and generates a highly light-resistant polymerizable colored product contained in the wood. By remarkably promoting the above, even in a tree where the grain is difficult to appear on the slice surface, the grain is not colored and the coloring is performed so that the goodness of the natural wood can be utilized.

  In addition, by applying a finishing treatment by simple coating on the surface of a sliced wood plate colored using heat treatment with high-pressure steam, without impairing the color tone of the wood colored using heat treatment with high-pressure steam, The purpose is to improve light resistance.

  In order to solve the above-mentioned object, the method for coloring a wooden surface decorative material according to claim 1, wherein the wood is heated with high-pressure steam until the core part becomes 110 ° C to 150 ° C, and light resistance is maintained inside the wood. Heat-colored by producing a highly polymerizable colorant, and then sliced the heat-colored wood to produce a sliced veneer, and on the surface of the sliced veneer, It is characterized by applying a low-concentration paint that does not impair the color tone.

  Further, the coloring method of the wooden surface decorative material according to claim 2 is characterized in that, in the coloring method of the wooden surface decorative material according to claim 1, a diffuser material is used as the wood.

  According to the method for coloring a wood surface decorative material according to claim 1, when coloring wood using heat treatment with high-pressure steam, the wood is heated with high-pressure steam until the core portion becomes 110 ° C. to 150 ° C. Since a large amount of highly light-resistant polymerizable coloring matter is generated inside the wood, even if it is in a tree where the grain is hard to appear, the surface will be the same when sliced after thermal coloring and making a sliced veneer Coloring can take advantage of the goodness of natural wood without losing the grain.

  In the heat treatment using high-pressure steam, the treatment at 110 ° C. or lower cannot sufficiently decompose hemicellulose, and the polymerization of the product is insufficient and the light resistance performance is not improved. Moreover, when it becomes 150 degreeC or more, decomposition | disassembly of hemicellulose will progress too much and will cause a strength fall. In any case, it is preferable to continue the heat treatment with high-pressure steam until the core portion reaches the treatment temperature.

  In addition, after thermal coloring, the finish is applied by applying a low-concentration paint that does not hinder the color tone after the thermal coloring process, so the process is simple and the color tone after the thermal coloring process is inhibited. Without the need for light resistance.

  Moreover, according to the coloring method of the woody surface decorative material according to claim 2, in particular, in the cloth coloring using the concave portion of the wood canal existing on the decorative surface, such as wiping cloth coloring conventionally, the woodness is expressed. Even in the diffuser, which was difficult to finish, the coloration became darker and it was not finished with a coloration that was so high that it was difficult to unravel the grain. Finished.

  Further, even if the concentration of coloring is lowered, it is rarely discolored by light or heat, and there are few problems after construction.

It is a flowchart which shows the coloring method of the wooden surface decorative material of this invention. It is a conceptual diagram which shows the structure of the processing apparatus applied to the coloring method of the wooden surface decorative material of this invention. It is a corresponding | compatible cross-sectional view of the outline of the processing apparatus of FIG. It is a conceptual diagram of the surface of a wooden surface cosmetic material. It is the table | surface which put together the evaluation result of the Example by the coloring method of the wooden surface cosmetics of this invention. It is explanatory drawing which shows the structure which makes a metal cage hold wood.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of the invention will be described with reference to the accompanying drawings. FIG. 1 is a flowchart showing a coloring method for a wooden surface decorative material of the present invention, and FIG. 2 is a conceptual diagram showing a configuration of a processing apparatus applied to the coloring method for a wooden surface decorative material of the present invention. FIG. 3 is a schematic cross-sectional view of the processing apparatus of FIG. FIG. 4 is a conceptual diagram of the surface of the wooden surface decorative material.

  The coloring method S of the wooden surface decorative material of this embodiment shown in FIG. 1 is for obtaining the wooden surface decorative material 2k having a high wooden texture while ensuring the light resistance of the wooden surface decorative material 2k (FIG. 4). Yes, wood 2 (a flitch material for manufacturing slice veneer 2s (FIG. 4) to be attached to the surface of a wood surface decorative material 2k (FIG. 4) using the processing apparatus 1 shown in FIGS. 2 and 3) are processed.

  As shown in FIGS. 2 and 3, the processing apparatus 1 includes a high-pressure steam kettle 4, and the high-pressure steam kettle 4 serves as a pedestal as a holding means that holds the wood 2 used as a flitch material in a detained state. A water reservoir 5 having 3 therein is provided inside.

  The pedestal 3 includes an upper fixing member 3a, a lower fixing member 3b, and pressing plates 2a and 2b. In FIG. 2, the wood 2 is sandwiched from the upper and lower sides by the pressing plates 2 a and 2 b, and in order to secure a gap, the upper fixing member 3 a and the lower fixing member 3 b of the base 3 with the spacers 7 a and 7 b interposed therebetween. And detained.

  The upper fixing member 3a and the lower fixing member 3b are configured such that the distance between the upper fixing member 3a and the lower fixing member 3b can be changed, and the wood 2 is sandwiched from both the upper and lower sides by the pressing plates 2a and 2b. In a state of being placed between the side fixing member 3b, the bolt and nut structure 3d is restrained.

  The lower fixing member 3 b is fixed in the water reservoir 5, and the water reservoir 5 is supported by the rail 6 from the inner wall surface of the high-pressure steam kettle 4 and inside the high-pressure steam kettle 4. The wheel 7 is movable and can be taken in and out of the high-pressure steam kettle 4.

  In this way, the high-pressure steam kettle 4 and the water reservoir 5 are provided separately, and the cooling water is introduced into the water reservoir 5, so that the thermal shock that is directly poured into the high-pressure steam kettle 4 is eliminated. As a result, the safety of the pressure vessel of the high-pressure steam kettle 4 is high.

  In addition, the cost of the apparatus can be reduced by making different materials to be used, such as manufacturing only the water storage container 5 that comes into contact with water from stainless steel and using a material that is cheaper than the high-pressure steam kettle 4. it can.

  The high-pressure steam kettle 4 is configured to be splittable in the longitudinal direction. The high-pressure steam kettle 4 is configured so that the water reservoir 5 can be taken out together with the pedestal 3 by opening and closing the lid 4c by attaching and detaching the flanges 4a and 4b by a bolt nut mechanism or a clamp mechanism (not shown). It has become.

  The high-pressure steam kettle 4 is provided with a high-pressure and high-temperature steam inlet 5a, an exhaust port 5b, and a pressurized water inlet 5c from the water tank 9 pressurized by the pressurized tank 8. A drain port 5e for draining the liquefied steam through the steam trap 5d, a water drain port 5f, a steam introduction valve 6a, a steam exhaust valve 6b, a water introduction valve 6c, a drain valve 6e, and a drain valve 6f. And are provided.

  Here, as the wood 2, a beech (spreading material) flitch thickness 30 mm × width 120 mm × length 450 mm was used.

  Next, with reference to FIG. 1, the coloring method S of the wooden surface decorative material implemented using this processing apparatus 1 is demonstrated.

  In the coloring method S of the woody surface decorative material of the present embodiment, first, in step S1, a plurality of timbers 2 are stacked with spacers 7a and 7b interposed therebetween to ensure a gap between the timbers 2.

  Next, in step S2, the pressing plates 2a and 2b are sandwiched between the uppermost and lowermost surfaces of the plurality of laminated timbers 2.

  In step S 3, the plurality of timbers 2 sandwiched between the pressing plates 2 a and 2 b are fixed to the pedestal 3 that is a holding means for the water reservoir 5.

  Then, in step S4, the water reservoir 5 is inserted into the high-pressure steam kettle 4. A pipe is also connected to the bottom of the water reservoir 5 to connect to a water drain 5f and a drain 5e, and the lid 4c is closed and closed.

  In step S5, the steam introduction valve 6a, the steam exhaust valve 6b, and the drain valve 6e are opened to replace the air in the hook with steam.

  In step S6, the steam exhaust valve 6b is closed, high-pressure steam is supplied into the high-pressure steam kettle 4, the wood 2 is treated, and a high-light-resistant polymerizable color is generated from hemicellulose by thermal decomposition.

  Then, when the processing is completed, in step S7, the steam introduction valve 6a is closed, the water introduction valve 6c is opened in the water reservoir 5 while being pressurized and water is supplied, and the water is fixed to the pedestal 3 of the holding means. Submerge the existing wood 2.

  At this time, the water introduction valve 6c is opened, water is inserted into the high-pressure steam kettle 4, and the wood 2 fixed to the base 3 is submerged and cooled in a high-pressure state. In that case, it manages so that the pressure in the high pressure steam kettle 4 may not fall. To lower the pressure, the steam introduction valve 6a is opened auxiliary, or the pressure of water is increased. Further, when the pressure rises too much, it is controlled by the steam exhaust valve 6b. In order to further increase the cooling efficiency, the water is circulated while adjusting by overflowing.

  When the cooling is completed, in step S8, the steam exhaust valve 6b is opened, and the high-pressure steam pot 4 is subjected to a pressure reduction process. Further, after the drain valve 6f is opened and the cooling water in the water reservoir 5 is discharged, the pipe connected to the water drain port 5f and the drain port 5e is removed from the water reservoir 5.

  In step S9, the water reservoir 5 is taken out from the high-pressure steam kettle 4 and in step S10, the wood 2 is taken out from the base 3 of the holding means.

  In step S11, the wood 2 is sliced to produce a slice veneer 2s.

  Further, after the slice single plate 2s is attached to the substrate 2m (FIG. 4) in step S12, the surface of the slice single plate 2s is polished in step S13. Finally, in step S14, the slice single plate 2s is polished. The surface of the plate 2s is coated with white paint P from the top of the grain.

  Thus, in the coloring method S of the woody surface decorative material 2k of the present embodiment, the wood 2 is heated with high-pressure steam until the core portion becomes 110 ° C. to 150 ° C., and the inside of the wood 2 is light-resistant. Heat-coloring treatment is performed by generating a highly polymerizable colorant, and then the sliced wood 2 is prepared by slicing the heat-treated wood 2, and the surface of the slice veneer 2s is heat-colored. It is characterized by applying a coating P having a low concentration that does not impair the color tone after processing.

  Further, as the wood 2, a hole-spreading material is used.

  Here, as shown in FIG. 5, experimental examples (Examples 1 and 2 and Comparative Examples 1, 2, and 3) performed using the above-described processing apparatus 1 will be described. FIG. 5 is a table summarizing the evaluation results of the examples according to the coloring method of the woody surface decorative material of the present invention.

  In Example 1, a raw material (moisture content of 56 to 64%) of beech (spreading material) flitch thickness 30 mm × width 120 mm × length 450 mm was used as the wood 2 to be heat-treated. This wood 2 was treated with high-pressure steam at 135 ° C. for 1 hour, and sliced into 0.25 mm thick slices with a slicer. And this slice single board 2s was affixed on the base material 2m with the adhesive agent. At this time, an aqueous rubber latex adhesive was used as the adhesive, and the pasting was held for 1 minute under conditions of a hot pressure of 110 ° C. and 3 kg / cm 2.

  Next, the surface of the pasted slice veneer 2s was finished with a # 240 belt sander, and a paint P of a colorant water-based colorant was applied and colored.

  Here, the paint P has a composition of 92% white pigment (titanium oxide), 0.5% black pigment (carbon black), 2% red pigment (organic), 5.5% yellow pigment (organic). The pigment was diluted with a diluent to 5%, and a viscosity modifier and a surfactant were added to the pigment to adjust the pigment and the diluent used at this time. .

  At this time, the coating amount was 14 to 16 g / m 2, and as a coating method, the sponge roll coater coating was followed by scraping with a reverse coater, followed by complementation with a rubber roll coater. Then, it was dried for 45 seconds with warm air of 140 ° C.

  After this, in finish coating, urethane paint (NYX-S-701 made by Sanyu Paint) was applied as an undercoat at 80 g / m2 with a roll coater (rubber), then air-dried and surface-polished with a # 240 belt sander. did.

  Thereafter, as a top coat, urethane paint (trade name: NYX-E-800 manufactured by Sanyu Paint) was applied with a roll coater (rubber) at 60 g / m 2 and air-dried.

  Next, Example 2 is a case where the heat treatment temperature (high-pressure steam) is 110 ° C. in Example 1, and the other conditions are the same as in Example 1.

  In Comparative Example 1, the heat treatment was performed in a dry state in Example 1 (dried at a temperature of 135 ° C. for 1 hour in a dryer), and other conditions were the same as in Example 1.

  Comparative Example 2 is a case where the heat treatment temperature with high-pressure steam is 105 ° C. in Example 1, and other conditions are the same as in Example 1.

  In Comparative Example 3, the paint P in Example 1 is not mainly white pigment, white pigment (titanium) 60%, black pigment (carbon black) 2%, red pigment (organic) 10%, yellow pigment. The composition was 28%. Other conditions are the same as in Example 1.

  Here, the table in FIG. 5 summarizes the visual and color differences around the grain, light resistance, and overall evaluation of the wood texture appearance of each of the above experimental examples. Visual inspection is judged based on the impression of the observer's appearance, and the one with the grain enhanced is considered good. The color difference around the grain is a numerical value obtained by measuring the grain and its neighboring color difference with a colorimeter with a measuring diameter of 2 mm and confirming with the Hunter color difference ΔE. The larger the value of ΔE, the more the grain difference is emphasized. It is said to be good. Furthermore, the light resistance is a numerical value obtained by confirming the fading color difference before and after irradiation with a hunter color difference ΔE after irradiating a fade meter (xenon lamp) for 48 hours. The smaller the numerical value of ΔE, the less fading. Yes. The evaluation was represented by symbols ◎ (very good), ○ (good), Δ (slightly bad), and x (bad).

  According to this, the visual result is that Example 1 is the best, ◎, then Example 2 and Comparative Example 1 are good, ◯, Comparative Example 2 is slightly bad Δ, and Comparative Example 3 is There was a dark portion other than the grain, which was poor.

  Further, the color difference around the grain is the same as the result of visual observation, Example 1 (ΔE = 6.1) is the best, and then Example 2 (ΔE = 4.5) and Comparative Example 1 (ΔE = 5.1) is good, ○, comparative example 2 (ΔE = 2.1) is slightly bad, Δ, comparative example 3 (ΔE was not measured with a dark portion other than wood grain) × Met.

  Further, the light resistance is the best and ◎ because Comparative Example 3 (ΔE = 2.0) was not mainly composed of white pigment, and in order of Example 1 (ΔE = 2.3, ○), Example 2 (ΔE = 2.6, ○), Comparative Example 1 (ΔE = 4.6, ×), and Comparative Example 2 (ΔE = 5.3, ×).

  As a result, the overall evaluation was good in Examples 1 and 2 and O, whereas in Comparative Example, Comparative Examples 1, 2, and 3 were poor. As described above, in the embodiment, the high-pressure steam treatment is properly used as in Embodiments 1 and 2, and the target color tone of 6 or less can be obtained as ΔE as the final color tone by performing coloring at a reduced concentration. I understand.

  As described above, the slice veneer 2s obtained from the wood 2 is composed of the late wood portion 2s1 in which the cells are densely arranged and the early wood portion 2s2 in which the cells are sparsely arranged. When heat-colored by heating with high-pressure steam, a polymerized colored product having high light resistance is generated, and the light resistance of the wood 2 and the sliced veneer 2s is improved. However, the dense latewood portion 2s1 is more intensely colored than the sparse earlywood portion 2s2, so that the grain is emphasized.

  According to the coloring method S of the woody surface decorative material 2k of the present embodiment, when the wood 2 is colored using heat treatment with high-pressure steam, the wood 2 is subjected to high-pressure steam until the core portion becomes 110 ° C to 150 ° C. Heating is used to produce a large amount of highly light-resistant polymerizable colored material inside the wood 2, so even if the wood is difficult to appear, slice it after thermal coloring to create a sliced veneer 2s When you do this, you can color the natural wood without losing its grain.

  In the heat treatment using high-pressure steam, the treatment at 110 ° C. or lower cannot sufficiently decompose hemicellulose, and the polymerization of the product is insufficient and the light resistance performance is not improved. Moreover, when it becomes 150 degreeC or more, decomposition | disassembly of hemicellulose will progress too much and will cause a strength fall. In any case, it is preferable to continue the heat treatment with high-pressure steam until the core portion reaches the treatment temperature.

  In addition, after the thermal coloring, since the finishing process is performed by applying a low-concentration paint P that does not hinder the color tone after the thermal coloring process, the process is simple and the color tone after the thermal coloring process is changed. Light resistance can be achieved without hindering.

  In particular, in the case of cloth coloring using a concave portion of a wood canal existing on the decorative surface, such as coloring of a wiping cloth, conventionally, it is difficult to express the wood quality, and the coloring becomes deeper. The finish is not colored with such a high degree of coloration that the wood grain is difficult to understand.

  Further, even if the concentration of coloring is lowered, it is rarely discolored by light or heat, and there are few problems after construction.

  The above-described embodiment is merely a preferred specific example of the present invention, and the present invention is not limited to the above-described embodiment.

  For example, the application field of the present invention may be any product as long as it has a wooden decorative surface. Various modifications are possible, such as interior materials, furniture materials, joinery and exteriors, home appliance surfaces, and household goods.

  The holding means is not limited to the configuration as in the illustrated base 3. FIG. 6 is an explanatory view showing a configuration in which the wood 2 is restrained by a metal basket 25 as a holding means. In FIG. 6, the wood 2 is submerged and cooled while preventing the wood 2 from floating due to the weight of the metal basket 25. In the processing apparatus 21 of FIG. 6, the metal basket 25 includes a net basket 25 a and a basket base 25 b so that a plurality of timbers 2 stacked by opening the top of the net basket 25 a can be stored in the metal basket 25 without gaps. It has become. As described above, in the processing apparatus 21, a plurality of pieces of wood 2 stacked via the spacers 7 a are packed in the metal basket 25 and subjected to high-pressure steam treatment, and the weight of the metal cage 25 prevents the wood 2 from floating. 2 is submerged and cooled.

  The metal basket 25 is moved by a wheel 27 inside the high-pressure steam kettle 24 while being supported by the rail 6 from the bottom surface of the high-pressure steam kettle 4 so that it can enter and exit from the high-pressure steam kettle 24.

  As described above, various holding means can be employed as long as the structure can hold the wood 2 in a restrained state.

  The material of the high-pressure steam kettle 4 is not limited to stainless steel. Considering metal contamination of the wood 2, stainless steel is preferable for the pressure vessel, but other materials can be adopted.

  Moreover, although the pressurization means of water is not specifically limited, use of a high-pressure water tank or a high-pressure pump is preferable.

  Further, in this embodiment, as the wood 2 to be heat-treated, beech (spreading material) flitch thickness 30 mm × width 120 mm × length 450 mm raw material (moisture content of 56 to 64%) was used. It is not limited to materials. Various woods can be used, and various design changes can be made in size. Various design changes can be made to the assembly and slicing conditions.

  In the present embodiment, the paint P includes a white pigment (titanium oxide) 92%, a black pigment (carbon black) 0.5%, a red pigment (organic) 2%, and a yellow pigment (organic) 5.5%. The pigment was diluted with a diluent to 5% (ratio of pigment to diluent), and a viscosity modifier and a surfactant were added to the pigment for adjustment, but various design changes can be made depending on the conditions.

  In addition, the coating method of paint P is, in principle, a process of coating with a sponge roll with a large coating amount and scraping with a metal reverse roll, but the coating method of paint P is spray, roll coater, flow coat Various design changes are possible, such as a single coater or a knife coater. In addition, various design changes can be made for the coating amount, coating conditions, and finish coating.

  However, in the case of a sponge coater including reverse scraping, the ratio of the pigment to the diluent is preferably 10% or less. In the case of rubber and metal natural coaters, the ratio of the pigment to the diluent is preferably 25% or less.

  In addition, it goes without saying that various design changes are possible within the scope of the claims of the present invention.

P Paint 2 Wood 2k Wood surface decorative material 2s Slice veneer

Claims (2)

  The wood is heated with high-pressure steam until the core part becomes 110 ° C. to 150 ° C., and a heat-colored treatment is performed by generating a highly light-resistant polymerizable colored material inside the wood, and then the heat-colored treatment. A wood surface decorative material characterized in that a sliced veneer is prepared by slicing the wood, and a low-concentration paint is applied to the surface of the slice veneer so as not to impair the color tone after thermal coloring treatment. Coloring method. In the coloring method of the wooden surface decorative material of Claim 1,
A method for coloring a wooden surface decorative material, wherein a diffuser is used as the wood.

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