JP2007138697A - Wooden flooring and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide wooden flooring with a finishing appearance that gives a feeling of brightness and a feeling of pearl, and its manufacturing method. <P>SOLUTION: This wooden flooring 100 comprises wooden base 110 and a bright coating 120 positioned on the surface 106b side of the wooden base 110 and containing a bright pigment. This method of manufacturing the wooden flooring comprises the bright coating forming step of coating the surface 110b of the wooden base 110 with a bright paint containing a bright pigment and curing the paint to form a bright coating 120. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wooden flooring and a method for producing the same.

Conventionally, in order to improve the protection and appearance of a wooden substrate, various materials have been proposed for a wooden material having a coating film formed on the surface of the wooden substrate and a manufacturing method thereof. (For example, refer to Patent Document 1 and Patent Document 2).
JP-A-11-90320 JP 2005-7219 A

  Patent Document 1 proposes a method for applying a wood material, characterized in that a wood base material is crushed with a colored undercoat paint, then sand polishing is performed to perform wood graining, and then an overcoat is applied with a transparent overcoat paint. ing. According to this coating method, it is described that the wood material (wood grain) of the material can be realized at the same time that the wood material is protected from corrosion or the like. Furthermore, it is described that a pearl pigment should be contained in the transparent top coat. Thereby, it is described that an unprecedented design feeling can be obtained.

  In Patent Document 2, on a base material, a metallic base paint containing a scaly glittering pigment and having a different dilution ratio with a solvent is applied in two stages, a first stage and a second stage, There has been proposed a method for forming a glittering coating film in which the clear paint (C) is sequentially applied wet-on-wet. Specifically, the application solid of the first stage metallic base coat paint (A) is 16 to 30% by mass, and the application solid of the second stage metallic base coat paint (B) is applied. A method for forming a glittering coating film characterized by being 5 to 15% by mass has been proposed. Examples of the substrate include wood, metal, glass, cloth, and plastic products. According to this coating method, it is described that a coating film excellent in high glitter feeling, pearl feeling, and flip-flop properties can be obtained regardless of the kind of glitter pigment, the coating film structure, and the coating machine.

By the way, in recent years, as a flooring material for a house or the like, there has been a demand for a wooden flooring material having a finished appearance with a glittering and pearly surface. However, the conventional wooden flooring does not have a finished appearance with a brilliant and pearly surface and cannot meet such demands. Further, since it is used as a flooring material, there is a demand for a wooden flooring material having not only a finished appearance but also excellent properties such as caster resistance, crack resistance, and abrasion resistance.
This invention is made | formed in view of this problem, Comprising: It aims at providing the wooden flooring which has the finishing appearance of the surface with a glittering feeling and a pearl feeling, and its manufacturing method.

  The solution is a wooden flooring comprising a wooden substrate and a coating film located on the surface side of the wooden substrate, and a glittering coating film containing a glittering pigment.

  The wooden flooring of the present invention includes a glitter coating film containing a glitter pigment on the surface side of a wooden substrate. Therefore, the wooden flooring of the present invention is a wooden flooring having a finished appearance with a glittering and pearly surface. In addition, the glittering coating film should just be located in the surface side of a wooden base material, may be directly formed on the surface of a wooden base material, and the other coating film formed on the surface of a wooden base material You may make it form in the surface side of a wooden base material via.

  The wooden floor material of the present invention includes, for example, a wooden floor material (a coating film on the surface) comprising a wooden base material (solid material) and a coating film (including a glittering coating film) laminated on the surface thereof. (Laminated solid material). Moreover, the wooden flooring of the present invention comprises a wooden substrate that is a board and a coating film (including a glittering coating film) laminated on the surface thereof, on the back surface of the wooden substrate that is a board, Also includes wooden floors made by bonding plywood, WPC, plastic boards, and the like.

  Examples of the glitter pigment include aluminum pigments such as aluminum flake pigments, colored aluminum flake pigments, metal oxide-coated aluminum flake pigments, and vapor-deposited aluminum flake pigments. These pigments can be used alone or in combination of two or more.

  Of these, the aluminum flake pigment is a pigment that imparts concealability and metallic metallic feeling to the coating film. As a specific example, the aluminum flake pigment is pulverized with a fatty acid such as stearic acid in a ball mill by a normal method. Examples include prepared leafing and non-leafing aluminum flakes. Examples of commercially available products of aluminum flake pigments include “Alpaste 62-356” and “Alpaste 5620NS” manufactured by Toyo Aluminum Co., Ltd.

Examples of the colored aluminum flake pigment include those obtained by coating the aluminum flake of the substrate with an organic colored pigment or an inorganic colored pigment in a flaky shape. Examples of the metal oxide-coated aluminum flake pigment include a base aluminum flake coated with a metal oxide such as TiO ₂ , Fe ₂ O ₃ , SiO ₂ , and Al ₂ O ₃ . Examples of the vapor-deposited aluminum flake pigment include those obtained by depositing aluminum on a base organic film, dissolving the base organic film to form an ultra-thin aluminum sheet, and pulverizing the sheet.

  Further, as other bright pigments, metal oxide-coated mica pigment, metal oxide-coated synthetic mica pigment, metal oxide-coated alumina flake pigment, metal oxide-coated silica flake pigment, metal oxide-coated plate-like iron oxide, stainless steel Examples include flakes, metal titanium flake pigments, plate-like molybdenum sulfide, plate-like bismuth chloride, plate-like iron oxide, and cholesteric liquid crystal polymer.

Among these, metal oxide-coated mica pigments and metal oxide-coated synthetic mica pigments are natural or synthetic mica powder (mica powder), and metal oxides such as TiO ₂ , Fe ₂ O ₃ , SnO ₂ , and ZrO ₂ . It coats with. The metal oxide-coated alumina flake pigment is obtained by coating aluminum oxide powder with a metal oxide such as TiO ₂ , Fe ₂ O ₃ , SnO ₂ , or ZrO ₂ . Examples of commercially available metal oxide-coated alumina flake pigments include “Silary T60-10WNT Crystal Silver” and “Silary T60-23 WNT Galaxy Blue” manufactured by Merck Japan Co., Ltd.

The metal oxide-coated silica flake pigment is obtained by coating silica powder with a metal oxide such as TiO ₂ , Fe ₂ O ₃ , SnO ₂ , or ZrO ₂ . The metal oxide-coated plate-like iron oxide is obtained by coating plate-like iron oxide powder with a metal oxide such as TiO ₂ , Fe ₂ O ₃ , SnO ₂ , or ZrO ₂ . As described above, the glitter pigment coated with a metal oxide such as TiO ₂ , Fe ₂ O ₃ , SnO ₂ , ZrO ₂ can give an excellent glitter feeling and pearl feeling to the coating film, and thus is preferably used. be able to.

Further, the metal oxide-coated mica pigment and the metal oxide-coated synthetic mica pigment may be white mica pigment or interference mica depending on the type of metal oxide to be coated such as TiO ₂ , Fe ₂ O ₃ , SnO ₂ , and ZrO _2. It is classified into pigments and colored mica pigments. Examples of commercially available white mica pigments include “Iriodin 103WNT” manufactured by Merck Japan. Moreover, as a commercial item of an interference mica pigment, the "Iriodin 225WNT" by Merck Japan Ltd. can be mentioned, for example. Examples of commercially available colored mica pigments include “Iriodin 504 WNT” manufactured by Merck Japan Co., Ltd.
In addition, the luster pigment used in the wooden flooring of this invention can be used individually by 1 type, or can also be used in combination of 2 or more type.

  Further, the wood floor material, wherein the wood base material has a summer eye portion and a winter eye portion, and the glitter coating is laminated on a surface of the wood base material, and the glitter property Of the coating film, the wood floor in which the orientation of the glitter pigment is relatively higher in the portion of the wood substrate located on the winter eye portion than in the portion located on the summer eye portion. Good material.

In the wood floor material of the present invention, the glittering coating film is laminated on the surface of the wood base material having the summer eye portion and the winter eye portion. Further, in this glittering coating film, the orientation of the glittering pigment is relatively higher in the part located on the winter eye part of the wooden substrate than in the part located on the summer eye part. The higher the orientation of the glitter pigment contained in the glitter coating film (the more the orientation is aligned), the stronger the color development (brightness) of the glitter coating film. In the film, the coloration (brightness) of the part located on the winter eye part is stronger than the part located on the Natsume part of the wooden substrate. Therefore, the wooden flooring of the present invention has a wooden texture that emphasizes the glitter feeling along the grain (the pattern of the surface of the wooden substrate expressed by the Natsume part and the Winter part) in addition to the pearl feeling. It becomes a wooden flooring with a finished appearance of a certain surface.
In addition, the wooden base material used for the wooden floor material of this invention is not restricted to a non-colored wooden base material, The wooden base material which imprinted and colored the water-based colorant is also included.

  Furthermore, any of the above wooden flooring, wherein the wooden base material has a summer eye part and a winter eye part, and the glitter coating is laminated on the surface of the wooden base material, Of the glittering paint film, a part of the wood base material that is located on the winter eye part is a wood flooring that has a paint film property that is more brilliant than the part located on the summer eye part. Is preferred.

  In this wooden flooring, the portion of the glittering coating film located on the winter eye part of the wooden base material has a coating film property that shines more strongly than the part located on the summer eye part. Therefore, this wooden flooring becomes a wooden flooring having a finished appearance of the surface in which the glittering feeling along the grain is emphasized in addition to the pearly feeling.

  Furthermore, any of the above wooden flooring materials may be a wooden flooring material provided with one or a plurality of clear coating films on the surface side of the glitter coating film.

  The wooden flooring of the present invention includes one or more clear coating films on the surface side of the glitter coating film. Thus, by covering the glittering coating film with the clear coating film, it is possible to prevent the glittering pigment from falling off and improve the finished appearance of the surface.

  Further, in the above-described wood floor material, at least one of the one or more clear paint films may be a wood floor material containing a lubricant.

In the wood flooring of the present invention, a lubricant is contained in at least one clear coating film. Thereby, it becomes a wooden floor material excellent in characteristics, such as caster resistance, crack resistance, and abrasion resistance.
Examples of the lubricant include alumina powder, silica powder, silicon carbide powder and the like. Of these, it is particularly preferable to use white alumina powder as the alumina powder. Since the white alumina powder is almost colorless and transparent, the influence of the alumina powder on the finished appearance of the wooden flooring can be extremely reduced. Examples of the silicon carbide powder include green carbon containing the silicon carbide powder with a purity of 95% or more.

  Another solution is a method for producing a wooden floor material, in which a glittering paint containing a glittering pigment is applied to the surface side of a wooden substrate, and this is cured to form a glittering coating film. It is a manufacturing method of a wooden flooring provided with a coating-film formation process.

In the method for producing a wooden floor material of the present invention, a glittering paint containing a glittering pigment is applied to the surface side of a wooden substrate, and this is cured to form a glittering coating film. Thereby, the wooden flooring which has the finished appearance of the surface with a glittering feeling and a pearl feeling can be obtained.
Note that the glitter paint may be applied to the surface of the wood substrate, or may be applied to the surface of the wood substrate, or through another coating film formed on the surface of the wood substrate. You may make it apply | coat to the surface side of a base material.

  Furthermore, in the method for producing a wooden floor material, the wooden base material is a wooden base material having a summer eye part and a winter eye part, and the glitter paint is a water-based clear paint or It is a glitter paint prepared by mixing with a solvent-based clear paint, and in the glitter coating film forming step, a method for producing a wooden floor material in which the glitter paint is applied to the surface of the wood substrate is preferable.

  In the method for producing a wooden floor material of the present invention, a wooden substrate having a summer eye portion and a winter eye portion is used as a wooden substrate, and a glitter pigment is mixed with an aqueous clear paint or a solvent-based clear paint as a glitter paint. Use the glitter paint. The Natsume part of the woody base material has a low cell density (many voids), and therefore it is relatively easy to absorb the water-based clear paint or the solvent-based clear paint. On the other hand, the winter base part of the wood base material has a high cell density (there are few voids), and therefore, it is relatively difficult to absorb the water-based clear paint or the solvent-based clear paint compared to the summer eye part.

  For this reason, when a glittering paint is applied to the surface of the wooden substrate, the water-based clear paint or solvent-based clear paint constituting the glittering paint is absorbed inside the Natsume portion of the wooden substrate. At this time, on the Natsume portion of the wooden substrate, the orientation of the glitter pigment contained in the applied glitter paint tends to be disturbed (orientation is lowered). On the other hand, since the water-based clear paint or solvent-based clear paint is hardly absorbed in the winter part of the wood base material, the glitter contained in the applied glitter paint is used on the winter part of the wood base material. It is considered that the orientation of the luminescent pigment is less disturbed and the orientation of the glittering pigment is higher than that on the Natsume portion of the wooden substrate.

  Therefore, when the glitter paint is applied to the surface of the wood substrate and then cured, the orientation of the glitter pigment applied to the part located on the winter eye part is higher than the part located on the Natsume part. A relatively high gloss coating can be formed. In this glittering coating film, the coloring (brightness) of the part located on the winter eye part of the wooden substrate is stronger than the part located on the Natsume part. Therefore, according to the production method of the present invention, it is possible to obtain a wooden floor material having a finished appearance of the surface in which the glitter feeling along the grain is emphasized in addition to the pearl feeling.

The glitter paint may be applied to the surface of an uncolored wooden substrate, or may be applied to the surface of a colored wooden substrate imprinted with an aqueous colorant.
Moreover, as a water-based clear coating material, it is preferable to use a water-based sealer, for example. As the solvent-based clear paint, for example, a solvent-based sealer is preferably used.

  In addition, as the wood base material, a wood base material having a large difference in penetration (absorption) of the clear paint (water-based clear paint or solvent-based clear paint) constituting the glitter paint is used in the summer eye part and the winter eye part. Is preferred. The larger the difference in penetration (absorption) of the clear paint constituting the glittering paint between the summer eyes and the winter eyes of the wood substrate, the more the surface grain can be emphasized.

  A method for producing a wooden flooring according to any one of the above, wherein after the glittering coating film forming step, a clear coating is applied to the surface side of the glittering coating, and this is cured to form a clear coating It is good to set it as the manufacturing method of a wooden flooring provided with the clear paint film formation process which forms.

In the production method of the present invention, a clear coating is applied to the surface side of the glitter coating and cured to form a clear coating. Thus, by covering the glittering coating film with the clear coating film, it is possible to prevent the glittering pigment from falling off and improve the finished appearance of the surface.
The clear coating applied to the surface side of the glitter coating film may be any of water-based, solvent-based and solvent-free clear coatings.

Example 1
A wooden flooring 100 according to a first embodiment of the present invention will be described with reference to FIG. The wooden flooring 100 of the present Example 1 has the wooden base material 110 and the glittering coating film 120 located in the surface 110b side. The glitter coating 120 is a coating formed by curing a glitter paint in which a clear pigment contains a glitter pigment. Thus, since the wooden flooring 100 of the present Example 1 is provided with the glittering coating film on the surface side of the wooden substrate, it becomes a wooden flooring having a finished appearance with a glittering feeling and a pearly surface. .
In Example 1, “Iriodin 111WNT” manufactured by Merck Japan Co., Ltd. is used as the bright pigment. Although not shown, the wood substrate 110 has a summer eye portion and a winter eye portion, and the surface 110b of the wood substrate 110 has a wood texture (a summer eye portion and a winter eye portion) (not shown). The pattern expressed by) appears.

Next, the manufacturing method of the wooden flooring 100 concerning the present Example 1 is demonstrated.
First, a wooden substrate 110 is prepared, and an aqueous colorant is applied onto the surface 110b of the wooden substrate 110 in the coloring process so that the grain of the conduit or the like looks more beautiful. Specifically, first, an aqueous colorant is applied to the surface 110b of the wooden substrate 110 using an air spray. Next, the reverse oyster roll is used to scrape off an unnecessary aqueous colorant and imprint the aqueous colorant into the concave portion 111 (conduit etc.) of the surface 110b. Thereafter, the aqueous colorant is dried and cured (100 ° C. × 1 minute) using a heater, and the coloring step is completed.

Next, in the glitter coating film forming step, the glitter coating film 120 is formed. Specifically, first, 3.0 g / (30 cm) ^{2 of} an ultraviolet curable glitter coating is applied using these coating machines in the order of natural roll coater, reverse oyster roll, and natural roll coater. Thereafter, using a UV dryer, ultraviolet rays emitted from an ultraviolet lamp were applied to the glittering paint with an integrated light quantity of 200 mJ / cm ² and cured to form a glittering coating film 120. Thereby, the wooden flooring 100 shown in FIG. 1 is completed.

  In Example 1, a glittering paint obtained by mixing 100 parts by weight of a clear paint and 10 parts by weight of a glittering pigment was used as the glittering paint. Specifically, as a clear paint, a product name IST300 manufactured by NATCO Corporation was used, and “Iriodin 111WNT” manufactured by Merck Japan Co., Ltd. was used as a bright pigment. IST300 is a solvent-free paint, and contains polyurethane acrylate (oligomer), polyethylene glycol diacrylate (monomer), and acrylic morpholine (monomer) as varnish components.

(Example 2)
Next, a wooden flooring 200 according to a second embodiment of the present invention will be described with reference to FIG.
The wooden flooring 200 of the second embodiment is formed by adding a clear coating film to the wooden flooring 100 of the first embodiment. Therefore, here, the description will focus on the points different from the first embodiment, and the description of the same points will be omitted or simplified.

  The wooden flooring 200 according to the second embodiment includes a wooden base 110 and a glitter coating 120, a first clear coating 230, and a second clear coating 240 stacked on the surface 110b side. It is a material. Similarly to the wood floor material 100 of the first embodiment, the wood floor material 200 of the second embodiment also has a glittering coating film 120. Therefore, the wood floor has a finished appearance with a glittering and pearly surface. Become a material.

Furthermore, the wooden flooring 200 of the second embodiment includes a first clear coating film 230 on the surface 120 b of the glitter coating film 120. Thus, by covering the glittering coating film 120 with the first clear coating film 230, it is possible to prevent the glittering pigment from falling off.
Moreover, the first clear coating film 230 is a coating film formed by curing a clear paint containing a lubricant. Thus, by providing a coating film containing an antifriction agent, it becomes a wooden floor material excellent in properties such as caster resistance, crack resistance, and wear resistance.
In Example 2, “WA400” (white alumina powder) manufactured by Fujimi Incorporated is used as a lubricant.

  Furthermore, the wooden flooring 200 of the second embodiment includes the second clear coating film 240 on the surface 230 b of the first clear coating film 230. Thereby, it is possible to prevent the lubricant contained in the clear coating film 230 from falling off and to improve the finished appearance of the surface of the wooden flooring 200.

Next, the manufacturing method of the wooden flooring 200 concerning the present Example 2 is demonstrated.
First, in the coloring step, in the same manner as in Example 1, an aqueous colorant is applied on the surface 110b of the wooden substrate 110 and dried and cured. Next, the process proceeds to a glittering coating film forming step, and a glittering coating film 120 is formed in the same manner as in Example 1.

Next, in the first clear coating film forming step, the first clear coating film 230 is formed on the surface 120 b of the glitter coating film 120. Specifically, an ultraviolet curable first clear paint is applied to the surface 120b of the glitter coating 120 using a natural roll coater, 3.0 g / (30 cm) ² . Thereafter, using a UV dryer, ultraviolet rays emitted from an ultraviolet lamp were applied to the first clear paint with an integrated light amount of 200 mJ / cm ² and cured to form a first clear coating film 230.

  In Example 2, a paint prepared by mixing 30 parts by weight of a lubricant with 100 parts by weight of a clear paint was used as the first clear paint. As a lubricant, “WA400” (white alumina powder) manufactured by Fujimi Incorporated is used, and as a clear paint, a product name IST470 manufactured by NATCO Corporation is used. IST 470 is a water-soluble paint and contains polyurethane acrylate (oligomer) and epoxy acrylate (oligomer) as varnish components.

Next, in the second clear coating film forming step, the second clear coating film 240 is formed on the surface 230 b of the first clear coating film 230. Specifically, first, the surface 230b of the first clear coating film 230 is polished using a paper with roughness # 320. Thereafter, using a natural roll coater, 3.0 g / (30 cm) ² of an ultraviolet curable second clear paint is applied onto the surface 230b of the first clear coating film 230. Next, using a UV dryer, the second clear paint was irradiated with ultraviolet rays emitted from an ultraviolet lamp at an integrated light quantity of 300 mJ / cm ² and cured to form a second clear coating film 240. Thereby, the wooden flooring 200 as shown in FIG. 2 is completed.

  In Example 2, the product name IST500 manufactured by NATCO CORPORATION was used as the second clear paint. This IST 500 is a solventless paint and contains polyurethane acrylate (oligomer), polyethylene glycol diacrylate (monomer), and ethyl carbitol acrylate (monomer) as varnish components.

(Example 3)
Next, a wooden flooring 300 according to a third embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 3, the wooden flooring 300 of the third embodiment has a wooden substrate 310, a glitter coating 320, a first clear coating 330, and a second clear coating laminated on the surface 310 b side. 340, a third clear coating film 350, and a fourth clear coating film 360.

  In the wooden flooring 300 of the third embodiment, a wooden base material 310 having a summer eye portion 311 and a winter eye portion 313 is used as the wooden base material (see FIGS. 3 and 4). On the surface 310b of the wooden substrate 310, as shown in FIG. 4, a grain (a pattern expressed by a summer eye portion 311 and a winter eye portion 313) appears.

  In particular, in the wooden flooring 300 of the third embodiment, as shown in an enlarged view in FIG. 5, among the glittering coatings 320 laminated on the surface 310 b of the wooden base 310, it is located on the winter eye part 313. In the region 323 that performs, the orientation of the glitter pigment 327 is relatively higher than that in the region 321 located on the Natsume portion 311. Specifically, in the region 323 located on the winter eye part 313, the glitter pigment 327 is relatively oriented in a certain direction (a direction along the surface 310b of the wooden substrate 310). On the other hand, in the part 321 located on the Natsume part 311, the orientation of the glitter pigment 327 is disturbed.

The higher the orientation of the glittering pigment 327 contained in the glittering coating 320 (the more the orientation is aligned), the stronger the color development (brightness) of the glittering coating 320. Therefore, the wooden flooring of Example 3 In 300, the coloring (brightness) of the part 323 located on the winter eye part 313 is stronger than the part 321 located on the summer eye part 311 in the glittering coating film 320. Therefore, the wooden flooring 300 according to the third embodiment is a wooden flooring having a finished appearance on the surface in which the glittering feeling along the grain is emphasized in addition to the pearly feeling.
In Example 3, as in Example 1, “Iriodin 111WNT” manufactured by Merck Japan Ltd. is used as the luster pigment 327.

Furthermore, the wooden flooring 300 according to the third embodiment includes a first clear coating 330 on the surface 320b of the glitter coating 320 as shown in FIG. Thus, by covering the glitter coating 320 with the first clear coating 330, the glitter pigment 327 can be prevented from falling off.
Furthermore, a second clear coating 340 containing a lubricant is provided on the surface 230b of the first clear coating 330. Thus, by providing the 2nd clear coating film 340 containing an antifriction agent, it becomes a wooden floor material excellent in characteristics, such as caster resistance, crack resistance, and abrasion resistance. In Example 3, “WA400” (white alumina powder) manufactured by Fujimi Incorporated is used as a lubricant.

  Furthermore, in the woody flooring 300 of the third embodiment, the third clear coating film 350 is provided on the surface 340b of the second clear coating film 340, and the fourth clear coating film is formed on the surface 350b of the third clear coating film 350. 360 is provided. Thereby, it is possible to prevent the lubricant contained in the second clear coating film 340 from falling off and to improve the finished appearance of the surface of the wooden flooring 300.

Next, the manufacturing method of the wooden flooring 300 concerning the present Example 3 is demonstrated.
First, a wood base 310 (see FIG. 6) having a summer eye portion 311 and a winter eye portion 313 is prepared, and in the coloring step, the wood base material 310 is colored with an aqueous colorant in the same manner as in Example 1.
Next, the process proceeds to a glitter coating film forming step, and a glitter coating film 320 is formed on the surface 310 b of the wooden substrate 310. Specifically, first, using a natural roll coater, 2.0 / (30 cm) ^{2 of} UV-curable luster paint 325 is applied (see FIG. 7).

  In Example 3, the glittering paint 325 obtained by mixing 100 parts by weight of the water-based clear paint and 10 parts by weight of the glittering pigment is used as the glittering paint. Specifically, IST 177 sealer (manufactured by NATCO Co., Ltd., trade name) is used as the water-based clear paint, and “Iriodin 111WNT” manufactured by Merck Japan Ltd. is used as the bright pigment.

  As described above, in the third embodiment, the wood substrate 310 having the Natsume portion 311 and the winter eye portion 313 is used as the wood substrate, and the glitter pigment 327 is added to the water-based clear paint (specifically, the glitter paint). , IST 177 sealer) is used. The Natsume portion 313 of the woody base material 310 has a low cell density (many voids), and therefore easily absorbs the aqueous clear paint. On the other hand, since the winter eye part 313 of the woody base material 310 has a high cell density (there are few voids), it is relatively difficult to absorb the water-based clear paint as compared with the summer eye part 313.

  For this reason, when the glitter paint 325 is applied to the surface 310b of the wooden substrate 310, as shown in FIG. 8, the water-based clear paint (specifically, IST) constituting the glitter paint 325 is formed inside the Natsume portion 311. 177 sealer) is absorbed. At this time, on the surface 311b of the Natsume portion 311, the orientation of the glitter pigment 327 contained in the applied glitter paint 325 tends to be disturbed (orientation is lowered). On the other hand, since the water-based clear paint (specifically, IST 177 sealer) is hardly absorbed in the interior of the winter eye part 313, it is included in the applied glittering paint 325 on the surface 313 b of the winter eye part 313. It is considered that the orientation of the glitter pigment 327 is hardly disturbed and the orientation of the glitter pigment 327 is higher than that on the surface 311b of the Natsume portion 311 (see FIG. 5).

  In addition, after applying the glitter paint 325 to the surface 310b of the wooden substrate 310, the water-based clear paint (specifically, IST 177 sealer) constituting the glitter paint 325 is absorbed inside the Natsume portion 311. Therefore, on the surface 311b of the Natsume portion 311, the surface level of the glittering paint 325 decreases from L1 to L2, as shown in FIG. On the other hand, since the water-based clear paint (specifically, IST 177 sealer) is hardly absorbed inside the winter eye part 313, the surface level of the glitter paint 325 is near L1 on the surface 313b of the winter eye part 313. Maintained at.

Thereafter, using a UV dryer, ultraviolet rays emitted from an ultraviolet lamp were applied to the glittering paint 325 with an integrated light amount of 100 mJ / cm ² to be cured. Thereby, the part 323 located on the winter eye part 313 forms the glittering coating film 320 in which the orientation of the glitter pigment 327 is relatively higher than the part 321 located on the summer eye part 311. can do. In the glitter coating film 320, the coloring (brightness) of the part 323 located on the winter eye part 313 is stronger than the part 321 located on the summer eye part 311.
Therefore, according to the manufacturing method of the third embodiment, it is possible to obtain the wooden flooring 300 having the finished appearance of the surface in which the glitter feeling along the grain is emphasized in addition to the pearl feeling.

Next, in the first clear coating film forming step, the first clear coating film 330 is formed on the surface 320 b of the glitter coating film 320. Specifically, an ultraviolet curing type first clear paint is applied to the surface 320b of the glitter coating film 320 by using an air spray and a reverse oyster roll coater at a rate of 2.0 g / (30 cm) ² . Thereafter, using a UV dryer, ultraviolet rays emitted from an ultraviolet lamp were applied to the first clear paint with an integrated light amount of 100 mJ / cm ² and cured to form a first clear coating film 330. In Example 3, IST 3041 (manufactured by NATCO Corporation, trade name) is used as the first clear paint.

Next, in the second clear coating film forming step, the first clear coating film 340 is formed on the surface 330 b of the first clear coating film 330. Specifically, an ultraviolet curable second clear paint is applied to the surface 330b of the first clear coating film 330 using a natural roll coater at 1.5 g / (30 cm) ² . Thereafter, using a UV dryer, ultraviolet rays emitted from an ultraviolet lamp were applied to the second clear paint with an integrated light amount of 290 mJ / cm ² and cured to form a second clear coating film 340. In Example 3, a paint prepared by mixing 60 parts by weight of a lubricant with 100 parts by weight of a clear paint was used as the second clear paint. “WA400” (white alumina powder) manufactured by Fujimi Incorporated is used as a lubricant, and IST 4211L (manufactured by NATCO Corporation, trade name) is used as a clear paint.

Next, in the third clear coating film forming step, the third clear coating film 350 is formed on the surface 340b of the second clear coating film 340. Specifically, first, the surface 340b of the second clear coating film 340 is polished using a paper with roughness # 320. Thereafter, using a natural roll coater, 1.6 g / (30 cm) ² of an ultraviolet curable third clear paint is applied to the surface 340b of the second clear coating film 340. Next, using a UV dryer, the third clear paint was irradiated with ultraviolet rays emitted from an ultraviolet lamp at an integrated light amount of 280 mJ / cm ² and cured to form a third clear coating film 350. Note that IST 4211L (manufactured by NATCO Corporation, trade name) is used as the third clear paint.

Next, in the fourth clear coating film forming step, the fourth clear coating film 360 is formed on the surface 350 b of the third clear coating film 350. Specifically, first, the surface 350b of the third clear coating film 350 is polished using a paper with roughness # 400. Thereafter, using a natural roll coater, 0.8 g / (30 cm) ² of an ultraviolet curable fourth clear paint is applied to the surface 350 ^{b of} the third clear coating film 350. Next, using a UV dryer, ultraviolet light emitted from an ultraviolet lamp was applied to the fourth clear paint with an integrated light amount of 450 mJ / cm ² and cured to form a fourth clear coating film 360. Note that IST 526 (manufactured by NATCO Corporation, trade name) is used as the third clear paint.
As described above, the wooden flooring 300 as shown in FIG. 3 is completed.

(Comparative example)
For comparison with Examples 1 to 3 of the present invention, a wooden flooring 10 manufactured by a conventional manufacturing method was prepared as a comparative example. The wood floor material 10 of this comparative example is greatly different from the wood floor material 200 of Example 2 described above in that the first clear paint film 12 is formed instead of the glitter paint film 120. Yes. Specifically, the wood floor material 10 of this comparative example includes a wood substrate 110 (similar to Examples 1 and 2), a first clear coating film 12 and a second clear coating film laminated on the surface 110b side. 13 and the third clear coating film 14.

The wood substrate 10 of this comparative example was manufactured as follows.
First, in the coloring step, an aqueous colorant is applied onto the surface 110b of the wooden substrate 110 and dried and cured in the same manner as in Examples 1 and 2. Subsequently, it progresses to a 1st clear coating-film formation process, and forms the 1st clear coating 12. Specifically, first, an ultraviolet curable first clear paint is applied in an order of 3.0 g / (30 cm) ² using these coating machines in the order of natural roll coater, reverse oyster triroll, and natural roll coater. . Thereafter, using a UV dryer, ultraviolet rays emitted from an ultraviolet lamp were applied to the third clear paint with an integrated light amount of 200 mJ / cm ² and cured to form a first clear coating film 12. In this comparative example, as the first clear paint, the same clear paint as that included in the glitter paints of Examples 1 and 2, manufactured by NATCO Corporation, trade name IST300 was used.

Next, the process proceeds to the second clear coating film forming step, and the surface of the first clear coating film 12 is coated with 3.0 g / (30 cm) ^{2 of} an ultraviolet curable second clear paint using a natural roll coater. did. Then, like the 1st clear coating film formation process, this 2nd clear coating material was hardened and the 2nd clear coating film 13 was formed.
In this comparative example, the product name IST400 manufactured by NATCO CORPORATION was used as the second clear paint. This IST400 is a solventless paint and contains epoxy acrylate (oligomer), polyethylene glycol diacrylate (monomer), and EO-modified trimethylolpropane triacrylate (monomer) as varnish components.

Next, the process proceeds to the third clear coating film forming step, and 3.0 g / (30 cm) ^{2 of} UV curable third clear paint is applied onto the surface 13b of the second clear coating film 13 using a natural roll coater. did. Thereafter, in the same manner as the first clear coating film forming step, the third clear coating film was cured to form a third clear coating film 14.
In this comparative example, NATO Co., Ltd. product name IST700 was used as the third clear paint. This IST700 is a water-dispersed paint and contains polyurethane acrylate (oligomer) and polyester acrylate (oligomer) as varnish components.

  Next, the finished appearances of the surfaces of the wood floor materials 100 to 300 of Examples 1 to 3 and the wood floor material 10 of the comparative example manufactured as described above were compared. The results are shown in Table 1.

As shown in Table 1, in the wood floor material 10 of the comparative example, the finished appearance of the surface with a glittering feeling and a pearly feeling was not obtained. On the other hand, in the wooden floor materials 100 to 300 of Examples 1 to 3, the finished appearance of the surface having a glittering feeling and a pearly feeling was obtained.
Furthermore, when comparing the wooden floor materials 100 to 300 of Examples 1 to 3, in the wooden floor materials 100 and 200 of Examples 1 and 2, the glitter feeling and the pearl feeling were uniform over the entire surface. For this reason, in the wood floor materials 100 and 200 of Examples 1 and 2, the finished appearance of the surface lacked the wood texture.

  This is considered to be because in Examples 1 and 2, a glittering paint obtained by mixing a glittering pigment with a solventless clear paint was used as the glittering paint. Specifically, when this glittering paint is applied to the surface 110b of the wooden substrate 110, almost no solvent-free clear paint is present inside the wooden substrate 110 regardless of the summer and winter parts of the wooden substrate 110. Not absorbed. For this reason, the orientation of the glitter pigment contained in the applied glitter paint is hardly disturbed over the entire surface 110b of the wood substrate 110, and the orientation of the glitter pigment over the entire surface 110 of the wood substrate 110 is difficult. It is thought to be higher. Thereby, in the wooden flooring materials 100 and 200 of Examples 1 and 2, it is considered that the finished appearance of the surface having a glittering feeling uniformly over the entire surface is obtained.

  On the other hand, the wooden flooring 300 of Example 3 had a finished appearance of the surface with a wood texture in which the glitter feeling was emphasized along the grain of the surface in addition to the pearl feeling. As described above, in Example 3, the glitter paint 325 in which the glitter pigment is mixed with the water-based clear paint is used as the glitter paint, compared with the Natsume portion 313 of the wood substrate 310. This is probably because the orientation of the glitter pigment 327 on the winter eye portion 313 could be increased.

In the above, the present invention has been described with reference to the first to third embodiments. However, the present invention is not limited to the above-described embodiments, and it can be applied as appropriate without departing from the scope of the present invention. Nor.
For example, in Example 2, the first clear coating film 230 containing the lubricant was formed on the surface 120 b of the glitter coating film 120. However, on the contrary, the glittering coating film 120 may be formed on the surface 230b of the first clear coating film 230 containing the lubricant. However, also in this case, it is preferable to form the second clear coating film 240 on the surface 120b of the glitter coating film 120.

  In Examples 1 and 2, the clear paint, the first clear paint (the paint forming the first clear paint film 230), and the second clear paint included in the bright paint (the paint that forms the bright paint film 120). As the paint (the paint that forms the second clear coating film 240), an ultraviolet curable paint was used. However, it is not limited to the ultraviolet curable coating material, and any curing type coating material such as a thermosetting type may be used.

  In Examples 1 to 3, the luster coating films 120 and 320 were formed on the surfaces 110b and 310b of the wood substrates 110 and 310 to produce the wood floor materials 100 to 300. A plywood board, a WPC board, a plastic board, or the like may be bonded to the back surface of 110 or 310.

  In Example 3, the glittering coating 320 was formed using a glittering paint 325 in which a glittering pigment 327 was mixed with an aqueous clear paint (specifically, IST 177 sealer). However, even if a glittering paint film is formed using a glittering paint obtained by mixing a glittering pigment 327 with a solvent-based clear paint, the finished appearance of the surface emphasizes the glittering feeling along with the grain. Can be produced. Here, as the solvent-based clear paint, for example, nitrified cotton lacquer (for example, lacquer MA clear, manufactured by NATCO, trade name) and urethane paint (for example, Seven No. 310 sealer, manufactured by NATCO, trade name) Etc. can be used.

It is sectional drawing of the wooden flooring 100 concerning Example 1. FIG. It is sectional drawing of the wooden flooring 200 concerning Example 2. FIG. It is sectional drawing of the wooden flooring 300 concerning Example 3. FIG. It is a perspective view of the wooden base material 310 concerning Example 3. FIG. 6 is an enlarged cross-sectional view of a glitter coating film 320 according to Example 3. FIG. It is an expanded sectional view of the wooden base material 310 concerning Example 3, and is equivalent to the BB arrow expanded sectional view of FIG. It is explanatory drawing explaining the manufacturing method of the wooden flooring 300 concerning Example 3. FIG. It is explanatory drawing explaining the manufacturing method of the wooden flooring 300 concerning Example 3. FIG. It is sectional drawing of the wooden flooring 10 concerning a comparative example.

Explanation of symbols

100, 200, 300 Wood floor material 110, 310 Wood base material 110b, 310b Wood base material surface 120, 320 Glossy paint film 230, 330 First clear paint film 240, 340 Second clear paint film 311 Natsume part 313 Winter Eye 325 Bright paint 327 Bright pigment

Claims (7)

A wooden substrate;
A wooden flooring comprising: a coating film located on the surface side of the wooden substrate, and a glittering coating film containing a glittering pigment. The wooden flooring according to claim 1, wherein
The wooden substrate has a summer eye portion and a winter eye portion,
The glitter coating film is laminated on the surface of the wood substrate,
Of the glitter coating film, in the portion of the wood substrate located on the winter eye part, the orientation of the glitter pigment is relatively higher than that of the part located on the summer eye part. Wooden flooring. The wood flooring according to claim 1 or 2,
A wooden flooring comprising one or more clear coatings on the surface side of the glitter coating. The wooden flooring according to claim 3, wherein
Among the one or more clear coating films, at least one clear coating film is a wooden floor material comprising a lubricant. A method for producing a wooden floor material,
A method for producing a wooden floor material comprising a glittering paint film forming step of applying a glittering paint containing a glittering pigment to the surface side of a woody base material and curing it to form a glittering paint film. It is a manufacturing method of the wooden flooring of Claim 5, Comprising:
The wooden substrate is a wooden substrate having a summer eye portion and a winter eye portion,
The glitter paint is a glitter paint obtained by mixing the glitter pigment with an aqueous clear paint or a solvent-based clear paint,
In the glitter coating film forming step, a method for producing a wood floor material, wherein the glitter paint is applied to the surface of the wood substrate. It is a manufacturing method of the wooden flooring of Claim 5 or Claim 6, Comprising:
A method for producing a wooden floor material comprising a clear paint film forming step of applying a clear paint to the surface side of the glitter paint film and curing the same after the glitter paint film forming process. .

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