JP6026937B2 - Veneer - Google Patents

Description

  The present invention relates to a decorative board used for interior materials such as flooring, and more particularly to a decorative board having a pattern printed on a substrate by an ink jet printer.

  2. Description of the Related Art Conventionally, a decorative board having a printed layer provided on a substrate surface is known as a decorative board used for this type of flooring. As such a decorative plate, Patent Document 1 discloses a decorative plate on which a concavo-convex pattern synchronized with a wood grain pattern is printed. In the decorative board of Patent Document 1, a pattern layer is printed with a dye-based ink on a substrate by an ink jet printer, and a raised portion (convex pattern) synchronized with the pattern is formed on the pattern layer with a pigment-based ink. Print formed. In this way, a concavo-convex pattern synchronized with the wood grain pattern is formed by printing the convex portion.

JP 2008-179073 A

  However, in the decorative plate of Patent Document 1, since the raised portion is formed of pigment-based ink which is a kind of solvent-type paint, the film thickness is about 5 to 15 μm and the unevenness is poor. Therefore, it is conceivable to increase the thickness of the raised portion by repeatedly applying pigment-based ink in order to give a feeling of unevenness.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to easily obtain a decorative board having a shape rich in unevenness synchronized with a pattern printed by an ink jet printer.

  In order to achieve the above-described problem, in the present invention, a convex portion synchronized with a part of a pattern printed by an ink jet printer is formed on the base material surface of the decorative board with a powder coating layer.

  Specifically, the decorative board according to the present invention includes a base material having a smooth surface, a pattern layer in which a pattern is printed on the surface of the base material by an ink jet printer, and the pattern on the pattern layer. And a powder coating layer laminated in synchronism with the pattern of the layer.

  According to the decorative board according to the present invention, the convex portion formed so as to be synchronized with the pattern in the pattern layer printed by the ink jet printer is formed by the powder coating layer. It can be formed thicker than the protrusions formed of ink. Therefore, it is not necessary to recoat the resin. Therefore, a decorative board having a shape rich in unevenness can be easily obtained.

  In the decorative board according to the present invention, the powder coating layer may include an antifriction material.

  If it does in this way, the abrasion resistance of a powder coating layer will improve, As a result, the abrasion resistance of a decorative board will improve.

  The decorative board according to the present invention may further include a transparent clear layer formed on the pattern layer, and the powder coating layer may be formed on the clear layer so as to synchronize with the pattern of the pattern layer. .

  In this way, by providing a clear layer having a certain thickness not only on the convex portions but also on the concave portions, it is possible to provide a decorative board having a more three-dimensional design appearance that has different design properties depending on the viewing angle.

  In the decorative board according to the present invention, the clear layer may include an antifriction material.

  If it does in this way, the abrasion resistance of a clear layer will improve and, as a result, the abrasion resistance of a decorative board will improve.

  The decorative board according to the present invention may further include a transparent coating layer laminated on the pattern layer and the powder coating layer.

  If it does in this way, a pattern layer and a powder coating layer will be protected by a transparent coating film layer, and since a transparent coating film permeate | transmits a pattern layer, appearance is not impaired.

  In the decorative board according to the present invention, the transparent coating layer may include an antifriction material.

  If it does in this way, the abrasion resistance of a transparent coating-film layer will improve, As a result, the abrasion resistance of a decorative board will improve.

  In the decorative board according to the present invention, it is preferable that the surface of the convex portion of the transparent coating layer has a lower gloss than the surface of the concave portion by being sanded to such an extent that the transparent coating layer is not removed.

  In this way, since the convex portion can give a lower gloss difference between the convex portion and the concave portion synchronized with the pattern layer in the decorative board, as described above, a more natural texture can be expressed, and high Designability can be obtained. Even in this case, even if the finished layer is damaged, the convex portion is maintained without being lost due to the effect of the transparent coating layer containing the antifriction material.

  In the decorative board according to the present invention, the surface of the convex portion of the transparent coating film layer may have a higher gloss than the surface of the concave portion by being polished to such an extent that the transparent coating layer is not removed.

  Even in this way, since the convex portion can give a higher gloss difference between the convex portion and the concave portion synchronized with the pattern layer in the decorative board, as described above, a more natural texture can be expressed, High designability can be obtained.

  The decorative board according to the present invention may further include an antifriction material layer formed on the convex portion.

  Thereby, a convex part can be comprised and the convex part which synchronized with the pattern can be protected, and the abrasion resistance of a decorative board improves.

  According to the decorative board according to the present invention, it is possible to easily obtain a decorative board having a shape rich in unevenness synchronized with a pattern printed by an ink jet printer.

(A) And (b) shows typically the decorative board which concerns on the 1st Embodiment of this invention, (a) is a top view, (b) is sectional drawing in the AA of (a). It is. It is sectional drawing which shows typically the decorative board which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows typically the decorative board which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows typically the decorative board which concerns on the 4th Embodiment of this invention. It is sectional drawing which shows typically the decorative board which concerns on the 5th Embodiment of this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the invention, its application, or its application.

(First embodiment)
First, a decorative board according to a first embodiment of the present invention will be described with reference to FIGS. 1 (a) and 1 (b). 1 (a) and 1 (b) schematically show a decorative board according to a first embodiment of the present invention, (a) is a plan view thereof, and (b) is an AA line of (a). FIG.

  As shown in FIGS. 1 (a) and 1 (b), in the decorative board 10 according to the present embodiment, for example, a pattern printed by an inkjet printer on the surface of a plate-like substrate 1 having a smooth surface. Layer 2 is formed. For the base material 1, for example, a laminated board, a plywood, a particle board, a wooden board such as a wood fiber board, an inorganic board such as a volcanic glass fiber board, a calcium board, a gypsum board, a resin such as polypropylene, polyethylene, ABS, etc. A resin plate or the like molded into a plate shape can be used. Further, a white ink receiving layer (not shown), for example, may be provided on the surface of the substrate 1 in advance in order to quickly fix the ink ejected by dots from the ink jet printer to the surface. The pattern layer 2 is a layer in which, for example, a wood grain pattern 3 is printed and formed. The wood grain pattern 3 has an autumn eye pattern portion 3a in which autumn eyes having a high density and a dark color are expressed, and a density and a color are low. And a spring pattern portion 3b in which a light spring is expressed. In the present embodiment, the pattern in the pattern layer 2 is the wood grain pattern 3. However, the present invention is not limited to this, and various patterns such as a stone pattern, a cloth pattern, or an abstract pattern can be applied.

  In synchronization with part of the wood grain pattern 3 in the pattern layer 2, a powder coating layer 4 is formed on the autumn eye pattern part 3a. The powder coating layer 4 is printed and formed with a resin material (not shown) serving as an adhesive by an ink jet printer in synchronization with the Akimi pattern 3a, and a powder coating is applied to the uncured resin material. The powder coating is formed by heating, melting and baking. The resin material printed and formed by the ink jet printer may be any resin as long as it can be applied using the ink jet printer. However, it is necessary to select appropriately considering the adhesiveness with the pattern layer 2 and the adhesiveness with the transparent coating layer 5 formed on the powder coating layer 4 described later. As this resin, an ultraviolet curable type, an electron beam curable type, a thermosetting type or a moisture curable type synthetic resin paint can be suitably used. For example, an acrylic, urethane, epoxy, or polyester resin is used. be able to.

  The ink jet printing machine used for printing the resin material used for adhesion of the pattern layer 2 and the powder coating is not particularly limited as long as it is a general ink jet printing machine, and is a head-fixing type printing machine (line type or It is possible to use various printing machines such as a single pass system) and a head moving type printing machine (serial head system). However, it is necessary to use two types: a head for printing the pattern layer 2 and a head capable of printing and forming a resin used for adhesion of the powder paint. When using a head-fixed ink jet printer, for example, when printing a rectangular decorative board, determine a ruler measurement point, and a pattern (Akime pattern part 3a) obtained by the pattern print head by sensing from the measurement point; The powder coating layer 4 obtained by the resin printing head is synchronized with the base film. On the other hand, when using a head movement type ink jet printer, since the printing object is fixed, the pattern (Akime pattern part 3a) obtained by the pattern printing head and the powder obtained by the resin printing head It is easy to synchronize with the base film of the coating layer 4.

  The method of distributing the powder coating on the surface of the uncured resin material is, for example, a method of distributing the powder coating to the surface of the pattern layer 2 conveyed by the conveying device from the hopper through a sieve that stops or vibrates back and forth. Alternatively, a method of spraying powder paint, a gas layer such as high-pressure air from a perforated plate provided at the bottom of a sealed container, and a pattern layer in the mist that sooted the powder on the perforated plate The fluid immersion method in which the base material 1 on which the substrate 2 is formed is applied and applied, and any other method capable of supplying a powder coating can be applied.

  The powder coating applied to the uncured resin material in order to form the powder coating layer 4 is removed except for the powder paint adhering to the resin material as an excess powder. A method of removing by suction using a pressure, a method of blowing off a pressurized gas such as air, a method of allowing the base material 1 to which the powder coating material has adhered to fall down by turning it over or turning it over, and further applying vibration. Any method that uses the difference in adhesion between the powder paint adhering to the uncured resin material and the powder paint simply placed on the other surface to the ground, such as forced drop in addition to this natural fall Can be used. Moreover, you may make it spray these on the uncured resin material 4a of the downward or upward state. In this case, excess powder is removed by natural fall.

  The powder coating is obtained by kneading a resin and, if necessary, a composition comprising additives such as a plasticizer, a colorant (including dyes and pigments), a flow agent, and a yellowing inhibitor. For woody substrates, a colorless and transparent clear from which pigments are removed or a colored clear paint to which a dye is added can be used to achieve a finish utilizing the pattern of the fabric. As the resin component, a thermoplastic resin such as a polyolefin resin, a polyvinyl chloride resin, a polyamide, or a polyester can be used. In the thermosetting resin system, an epoxy resin system, a polyester resin system, a hybrid system composed of an epoxy resin system and a polyester resin system, an acrylic system, or the like can be used.

  Furthermore, as the powder coating, an ultraviolet curable powder coating can be used. As the UV curable powder coating, a colorless transparent or colored transparent clear paint obtained by blending a photopolymerization initiator with a polymerization reactive polymer such as polyester or epoxy, or a pigment is blended with this. Those for coloring are generally used.

  These powder coatings are heated and melted using non-contact heating means such as infrared heaters, and in the case of porous substrates containing moisture and air, such as wooden substrates, the temperature is lower to avoid foaming due to these. For example, 90 to 120 ° C., preferably 100 to 110 ° C. When the heating temperature is less than 90 ° C., the powder coating is not sufficiently melted. When the heating temperature exceeds 120 ° C., only the heat energy is consumed, and the fluidity of the powder coating does not increase. Causes thermal destruction or thermal deformation of the material. In order to more reliably avoid the foaming of the wood base material, it is effective to preheat the base material 1 and evaporate water to some extent. In that case, it is necessary to be careful not to apply heat so that the moisture contained in the substrate 1 is completely evaporated.

  The heating and melting conditions may be appropriately set in view of the heating and melting conditions of the powder coating material to the extent that the wooden base material is not damaged when a wooden base material is used.

  In the case of thermosetting powder coatings, the baking process for baking the powder coating adhered to the resin includes convection heating, heating by near infrared rays, far infrared rays (ceramics etc. as a radiator), and other heating. Any baking means may be used. In the case of an ultraviolet curable powder coating, a mercury lamp, a xenon lamp, a metal halide lamp, or the like can be used. As the wavelength of the ultraviolet light, for example, radiation in the ultraviolet region of 100 to 140 nm can be used.

  Thus, the convex part which synchronizes with the pattern of the pattern layer 2 is formed with the powder coating layer 4, and the film thickness can be set to about 40-150 micrometers thicker than the conventional solvent-type coating material. Therefore, it is possible to easily obtain the decorative board 10 having a shape rich in unevenness, rather than forming the convex portion with the conventional pigment-based ink.

  A transparent coating layer 5 is formed on both the pattern layer 2 and the powder coating layer 4 by coating. Here, the transparent coating layer 5 is formed such that the surface thereof has an uneven shape due to the powder coating layer 4. That is, the transparent coating film layer 5 positioned on the powder coating layer 4 constitutes a convex portion 6a that bulges upward from other portions, while the powder coating layer 4 is not formed in the region. The positioned transparent coating film layer 5 constitutes a recess 6b.

  As the transparent coating layer 5, any resin can be used as long as the resin has transparency enough to transmit the Akimi pattern 3a of the pattern layer 2. A synthetic resin paint such as an ultraviolet curable type, an electron beam curable type, a thermosetting type, or a moisture curable type can be suitably used, and acrylic, urethane, epoxy, or polyester resins can be used. Moreover, a roll coater, a sponge coater, a spray, a brush, etc. can be used for application | coating of the transparent coating film layer 5, for example. After the transparent coating layer 5 is applied on the pattern layer 2 and the powder coating layer 4, it is necessary to adjust the viscosity and the coating amount so as not to accumulate in the recess 6 b, but when the viscosity is excessively high, Since streaky irregularities are generated by coating, it is preferable to adjust the viscosity appropriately using a monomer.

  Moreover, the transparent coating film layer 5 contains an antifriction material. Thereby, the abrasion resistance of the decorative board 10 improves. As the anti-friction material, for example, white alumina, green carbon, ceramic powder, or the like can be used, and it is preferable to use one having about 300 to 1500. The antifriction material can increase the wear resistance of the decorative plate 10 as its count decreases, but the surface property becomes rough. On the other hand, the degree of improvement in the wear resistance of the decorative plate 10 increases as the count increases. Since the surface can be made smoother, the antifriction material to be used may be appropriately selected depending on the desired finish level of the decorative board 10 and the intended use.

  In this embodiment, the portion that synchronizes with the Akume pattern portion 3a is the convex portion 6a, and the portion that synchronizes with the spring pattern portion 3b is the concave portion 6b. However, the present invention is not limited to this, and the pattern may be reversed. The convex part 6a should just be formed so that the glossiness of the recessed part 6b and the convex part 6a may differ so that it may synchronize with at least one part of the pattern of the layer 2. FIG. Further, not only the wood grain pattern 3 but also, for example, when a stone pattern is used as the pattern in the pattern layer 2, it is possible to improve the design of the decorative board by providing a convex portion so as to synchronize with the stone pattern. it can.

(Second Embodiment)
Hereinafter, a decorative board according to a second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a cross-sectional view schematically showing a decorative board according to the second embodiment of the present invention. In the present embodiment, description of the same parts as those in the first embodiment will be omitted, and only different parts will be described.

  As shown in FIG. 2, the decorative board 20 according to the present embodiment does not have the transparent coating layer 5 as compared with the first embodiment, and on the other hand, the pattern layer 2 is formed on the pattern layer 2. The difference is that a clear layer 8 having transparency to the extent that it can pass through the Akimi pattern 3a is formed. Specifically, in the decorative board 20 according to the present embodiment, the clear layer 8 is formed on the pattern layer 2, and the powder coating layer 4 is located on the clear layer 8 at a position corresponding to the autumn eye pattern 3 a. Is formed. Any resin can be used for the clear layer 8 as long as the resin is transparent enough to pass through the autumn pattern portion 3a of the pattern layer 2. A synthetic resin paint such as an ultraviolet curable type, an electron beam curable type, a thermosetting type or a moisture curable type can be suitably used. For example, acrylic, urethane, epoxy, or polyester resins can be used. By forming the clear layer 8 on the pattern layer 2, by providing the clear layer 8 having a certain thickness not only on the convex portion 6a but also on the concave portion 6b, the design property differs depending on the viewing angle. A decorative board having a typical design appearance can be provided.

  Further, in the decorative board 20 according to the present embodiment, the powder coating layer 4 includes an antifriction material (not shown) as compared with the first embodiment. As the anti-friction material, for example, white alumina, green carbon, ceramic powder, or the like can be used, and it is preferable to use one having about 300 to 1500. Note that the antifriction material can increase the wear resistance of the decorative plate 20 as the count decreases, but the surface property becomes rough. On the other hand, the degree of improvement in the wear resistance of the decorative plate 20 increases as the count increases. Since the surface can be made smoother, the antifriction material to be used may be appropriately selected depending on the desired finish level of the decorative board 20 and the intended use.

  The clear layer 8 may contain an antifriction material. Thereby, the abrasion resistance of the clear layer 8 improves and the abrasion resistance of the decorative board 20 further improves.

(Third embodiment)
Hereinafter, a decorative board according to a third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a cross-sectional view schematically showing a decorative board according to the third embodiment of the present invention. In the present embodiment, description of the same parts as those of the second embodiment will be omitted, and only different parts will be described.

  As shown in FIG. 3, the decorative plate 30 according to the present embodiment has a transparent coating layer 5 formed on both the pattern layer 2 and the powder coating layer 4 as compared with the second embodiment. Is different.

  Like the decorative board 30 of this embodiment, the pattern layer 2 can be more reliably protected by forming the clear layer 8 on the pattern layer 2 and further forming the transparent coating film layer 5.

(Fourth embodiment)
Hereinafter, a decorative board according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a cross-sectional view schematically showing a decorative board according to the fourth embodiment of the present invention. In the present embodiment, description of the same parts as those in the first embodiment will be omitted, and only different parts will be described.

  As shown in FIG. 4, the decorative board 40 according to the present embodiment is subjected to a process for adjusting the gloss on the surface of the convex portion 6 a in the transparent coating layer 5 as compared with the first embodiment. As a result, the gloss adjusting portion 7 is formed. As the processing, for example, sanding can be used. By using sanding, the surface of the convex portion 6a (gloss adjusting portion 7) can be roughened, and the gloss of the portion can be made lower than that of the concave portion 6b. As a result, it is possible to make a difference between the gloss of the convex portion 6a and the gloss of the concave portion 6b. The count of the abrasive paper used for sanding to reduce gloss is determined according to the surface roughness of the transparent coating layer 5 depending on the particle size and content of the antifriction material contained in the transparent coating layer 5. For example, when the particle size of the antifriction material (for example, white alumina) contained in the transparent coating layer 5 is WA300 to WA500 and the content is 5% to 10% by weight, the gloss of the convex portion 6a is lowered by sanding. , 400-1000 abrasive paper can be used.

  On the contrary, by increasing the smoothness of the surface of the convex portion 6a (gloss adjusting portion 7) in the transparent coating layer 5 and increasing the gloss of the portion higher than the concave portion 6b, the gloss of the convex portion 6a is increased. And the gloss of the recess 6b may be different. In this case, as a process for adjusting the gloss, sanding or buffing using a polishing paper having a large count can be used. The count of the abrasive paper used for sanding to increase the gloss of the convex portion 6a is the surface of the transparent coating layer 5 depending on the particle size and content of the antifriction material contained in the transparent coating layer 5 as in the above case. It is determined according to the roughness. For example, when the particle size of the antifriction material (for example, white alumina) contained in the transparent coating layer 5 is WA300 to WA500, and the content is 5% by weight to 10% by weight, abrasive paper having about 1000 to 1500 is used. It is preferable. The buffing is also called a polisher, and is a method of polishing the surface of the decorative board 40 with felt or non-woven fabric in the presence of fine particle polishing powder (compound). By these, the surface (gloss adjustment part 7) of the convex part 6a in the transparent coating film layer 5 becomes smooth, and the gloss of the part can be raised. As a result, it is possible to make a difference between the gloss of the convex portion 6a that synchronizes with the autumn pattern portion 3a of the pattern layer 2 and the gloss of the concave portion 6b that synchronizes with the spring pattern portion 3b. Unlikely, natural texture can be expressed and the design of the decorative board 40 can be improved.

(Fifth embodiment)
Hereinafter, a decorative board according to a fifth embodiment of the present invention will be described with reference to FIG. FIG. 5 is a sectional view schematically showing a decorative board according to the fifth embodiment of the present invention. In the present embodiment, description of the same parts as those in the first embodiment will be omitted, and only different parts will be described.

  As shown in FIG. 5, the decorative board 50 according to the present embodiment has a process for adjusting the gloss on the surface of the convex portion 6 a in the transparent coating layer 5 as compared with the first embodiment. The difference is that the antifriction material layer 9 is formed only on the surface of the convex portion 6a, not the gloss adjusting portion 7 formed by being applied.

  The anti-friction material layer 9 is formed by mixing the anti-friction material with a resin that is transparent to the extent that it can pass through the Akimi pattern 3 a of the pattern layer 2. As such a resin, a synthetic resin paint such as an ultraviolet curable type, an electron beam curable type, a thermosetting type or a moisture curable type can be suitably used. For example, an acrylic type, a urethane type, an epoxy type or a polyester type can be used. Resin can be used. For the application of the antifriction material layer 9, for example, a roll coater, a sponge coater, a spray or a brush can be used. Further, as the antifriction material, for example, white alumina, green carbon, ceramic powder or the like can be used, and it is preferable to use one having about 300 to 1500. The antifriction material can increase the wear resistance of the decorative plate 50 as its count decreases, but the surface property of the antifriction material layer 9 becomes rough. On the other hand, the wear resistance of the decorative plate 50 increases as the count increases. Although the degree of improvement in the property is reduced, the surface of the antifriction material layer 9 can be made smooth, so the antifriction material to be used may be appropriately selected depending on the desired finish of the decorative board 50 and the intended use. Since the antifriction material layer 9 is provided on the surface of the decorative board 50, it is preferable that the antifriction material has a large count in consideration of the smoothness.

  The decorative board according to the present invention can easily obtain a decorative board with high design having a shape with a sense of unevenness that synchronizes with a pattern printed by an ink jet printer, and particularly on the surface of a substrate by an ink jet printer. It is useful for a decorative board on which a pattern is printed.

DESCRIPTION OF SYMBOLS 1 Base material 2 Pattern layer 3 Wood grain pattern 3a Autumn pattern part 3b Spring pattern part 4 Powder coating layer 5 Transparent coating layer 6a Convex part 6b Concave part 7 Gloss adjustment part 8 Clear layer 9 Antifriction material layers 10 and 20 30, 40, 50 veneer

Claims (9)

A substrate having a smooth surface;
On the surface of the substrate, a pattern layer on which a pattern is printed by an inkjet printer,
A decorative board comprising a powder coating layer laminated on the pattern layer so as to synchronize with a part of the pattern of the pattern layer.   The decorative sheet according to claim 1, wherein the powder coating layer includes an antifriction material. Further comprising a transparent clear layer formed on the pattern layer,
3. The decorative board according to claim 1, wherein the powder coating layer is laminated on the clear layer so as to synchronize with a pattern of the pattern layer.   The decorative board according to claim 3, wherein the clear layer includes an antifriction material.   The decorative board according to any one of claims 1 to 4, further comprising a transparent coating layer laminated on the pattern layer and the powder coating layer.   The decorative board according to claim 5, wherein the transparent coating layer contains an antifriction material.   The surface of the convex portion of the transparent coating layer is sanded to such an extent that the transparent coating layer is not removed, so that the gloss is lower than the surface of the concave portion. The decorative board as described.   The surface of the convex portion of the transparent coating layer is polished to such an extent that the transparent coating layer is not removed, so that the gloss is higher than the surface of the concave portion. The decorative board described in 1.   The decorative board according to any one of claims 5 to 8, further comprising an antifriction material layer formed on the convex portion of the transparent coating film layer.

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