JPS5884709A - Manufacture of grain emphasizing decorative board - 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 The present invention relates to a method for manufacturing a decorative board that emphasizes wood grain.

Conventionally, methods for emphasizing the wood grain of wood decorative boards include a type in which a wood grain emphasizing agent or a wood grain brightening agent is applied, and a so-called wood grain reversal type in which the spring wood portion is made darker than the summer wood portion.

In the former, trace components and pigments present in the wood react with wood grain enhancers and wood grain brightening agents to darken the color of the wood grain areas. In other words, since the spring wood that makes up the wood has a lower density than the summer wood, the spring wood contains fewer reactive trace components and pigments per unit volume. Therefore, the wood grain in the summer wood area is emphasized more than in the spring wood area because it reacts with the evenly applied wood grain emphasizing agent and wood grain brightening agent and becomes darker in color. However, with this method, since reactive components are contained in both spring wood and summer wood, the wood grain is emphasized and the overall color of the treated wood becomes darker, resulting in a finished product that is darker than untreated wood. However, in addition to being unable to obtain much depth, it also had the disadvantage that it was not very effective with materials containing few reactive components.

On the other hand, in the case of the latter, when a colored stain with good permeability that is darker than the summer wood is applied to the wood surface, the penetration into the spring wood with large cells is remarkable, and the penetration into the summer wood with small cells is relatively small. . For this reason, if the coating is wiped evenly with a cloth or the like after application, the colored stain will be wiped off in areas where the colored stain has not penetrated, that is, the summerwood area, and the colored stain will remain mostly uncolored. On the other hand, the spring wood part is in a colored state because the colored stain has penetrated into the inside. Therefore, the spring wood part is darker than the summer wood part, and the summer wood part is embossed and the wood grain is emphasized. This method of emphasizing wood grain also darkens the entire surface of the wood more than the previous method, so it does not give a deep flavor, and is not suitable for decorative boards that have the bright color of wood.

Therefore, this invention solves the problems such as uneven emphasis, darkening, and depth of the wood grain that are found in the wood [1 highlighting agent application type and wood grain reversal type that makes the spring wood part darker than the summer wood part, and emphasizes the wood grain. The purpose of the present invention is to provide a method for producing a wood grain-enhancing decorative board that can control the degree and color tone of the wood and has excellent surface properties.

That is, the surface of the coniferous wood is made uneven by brushing, etc., and then a pearl pigment or other coloring agent, or a mixture of two or more of these, is applied to the uneven surface, and after drying, a sealer is applied. Processing, drying,
The colored portion of the sealer on the convex portions is removed using a sander or the like, and then a wood grain emphasizing agent or printing ink is applied only to the convex portions, dried, and painted to produce a wood grain emphasizing decorative board.

To explain in more detail, the surface of the decorative veneer made of softwood veneer with hard and soft right edges and summer edges is brushed with a long-bristled brush so that the spring wood portions form recesses. The depth of brushing is appropriately selected depending on the thickness and finish of the softwood veneer to be brushed, but is preferably 0.1.
~Q, 5 m/m. Next, a coloring agent such as a colored stain, a pearl pigment, or a mixture of a colored stain and a pearl pigment is applied to the entire surface of the uneven surface using a roll coater or a sprayer, and dried with a hair dryer at 80° C. for 15 minutes. On top of this, it also prevents paint from being absorbed.

To prevent the wood grain brightening agent from being sucked in, sealant was applied with a roll coater, dried at 60°Cl2O with a hair dryer,
Masking. Thereafter, the surface is ground with a sander equipped with No. 180 sandpaper to remove the colorant such as colored stain or pearl pigment and the masking sealer that adhered to the convex portions of the summer material. Using a roll coater, apply a grain enhancer or printing ink to the wooden surface of the exposed summerwood convexes by sanding, and dry completely with a hair dryer at 60°C for 920 minutes. Whether to apply a wood grain enhancer or printing ink can be selected depending on whether or not the coated wood reacts easily with the wood grain enhancer. In that case, printing ink is more effective as you can choose your favorite color. Finally, to protect the surface, paint was applied with a curtain flow coater and
Finish by drying with a Cl2O dryer. In order to improve the surface properties of the finished product, especially its wear resistance and hardness, it is sufficient to increase the amount of paint applied and completely fill the right-hand recesses.

The best wood for brushing used in this invention is spring wood and summer wood, which are coniferous wood with a high degree of hardness and softness. Even if an artificial wood that is a combination of wood and soft wood is used, the wood grain enhancement effect of the present invention can be sufficiently obtained.

As described above, by using the method for manufacturing wood grain-enhancing decorative boards of the present invention, by appropriately selecting a coloring agent such as a pearl pigment, it is possible not only to prevent the overall color from becoming dark, but also to create wood grains with unprecedented depth due to the pearl effect. Therefore, it is possible to obtain an emphasizing decorative board.

Next, an example of the present invention will be described, but the present invention is not necessarily limited to this example.

(Example 1) A 1 or 2 m/nt straight-grained veneer (1) of Japanese pine is bonded to a plywood base (2) by hot pressure using a melamine-coria co-condensed resin adhesive. Brush this surface with a rotating, slightly stiff nylon brush to remove the soft spring material (3a).
3 m/m was removed to create a recess. Pearl pigment (4) (mica-based titanium foil) was applied thereto using a roll coater and dried at 80°C for 115 minutes using a hair dryer.

Apply sealant (5) on this with a roll coater,
``C, Dry with a hair dryer for 20 minutes, then grind the sealant and pearl pigment that adhered to the convex parts of the summer wood with 180 grit sandpaper. Roll coated with Ink Kagaku Kogyo Co., Ltd.).
It was dried at 80° C. for 15 minutes to emphasize the wood grain, and a two-component reactive urethane resin paint (7) was applied as a paint using a curtain coater to fill the spring material depressions and harden.

As a result, a decorative board was obtained in which the wood grain was emphasized and, moreover, the wood grain was enhanced with depth due to the effect of the pearl pigment.

[Brief explanation of the drawing]

The drawing is a partially cutaway sectional view showing an embodiment of the present invention. 1. Straight grain veneer 2. Plywood base 3a. Spring wood section 3b
・・Summer material convex portion 4・・Pearl pigment 5・・Sealer agent 6
・・Wood grain enhancer 7・・Resin @ size.

Claims (1)

[Claims] ■ The surface of coniferous wood having hard and soft summer wood and spring wood is roughened by brushing, etc., and pearl pigments, other coloring agents alone, or these are applied to the uneven surface. After applying a mixture of two or more of these and drying, apply a sealant, and after drying, remove the coating agent on the tip of the convex part with a sander, etc., and apply a reactive wood grain enhancer alone or A method for producing a wood grain accentuated decorative board characterized by applying a mixture of the above and drying and then finishing with a paint. (2) A method for producing a wood grain-enhancing decorative board according to claim 1, wherein the pearl pigment is a metal powder or a fluorescent agent. (2) The method for producing a wood grain-enhancing decorative board according to claim 1, characterized in that a pearl pigment or other coloring agent alone or a mixture of two or more of these is mixed into the sealant. (2) A method for producing a wood grain-enhancing decorative board according to claim 1, wherein the softwood material having hard and soft summer wood portions and spring wood portions is bleached. ■ The wood grain emphasizing decorative board according to claim 1, which is an artificial grain wood made by artificially combining hard and soft veneers with coniferous wood having hard and soft summer wood and spring wood. Production method. (2) A method for producing a wood grain enhancing decorative board according to claim 1, wherein the reactive wood grain enhancing agent is a colored ink.