A transfer printing wooden floor

Abstract

The present invention belongs to the technical field of building decoration materials, relates to wooden floors, and particularly relates to a transferred wooden floor, which comprises a wooden substrate. On one side of the wooden substrate, a transparent bottom coating, a transfer layer, and a transparent protective layer are sequentially arranged, and a transparent back coating is arranged on the other side. The thickness of the wooden substrate is 5-22 mm. The transparent bottom coating is composed of one or more bottom coatings with a thickness of 0.03-0.5 mm. The thickness of the transfer layer is 0.01-0.05 mm. The transparent protective layer is composed of multiple coatings with a thickness of 0.03-0.5 mm. The thickness of the transparent back coating is 0.01-0.1 mm. For the transferred wooden floor disclosed by the present invention, the transferred pattern is placed on the transparent bottom coating with a flat and dense surface, which will not affect the overall effect of the wood grain. The transferred pattern layer is composed of sublimation dyes, with a vivid picture quality, a visual effect close to that of a photo, and clear boundaries. The transferred pattern serves as a supplement to the decorative effect of the wood grain on the floor surface, greatly enriching the aesthetics of the floor.

Description

Technical Field

[0001] The present invention belongs to the technical field of building decoration materials, relates to wooden floors, and particularly relates to a transferred wooden floor. Background Art

[0002] As a natural resource, wood is becoming increasingly scarce. Many countries have formulated a series of laws and regulations to strengthen the protection of forest resources, which brings good opportunities and strong market challenges to the development of the floor industry.

[0003] Floor surface decoration can obtain a beautifying effect on the appearance of the floor, improve the use value of the floor, and expand the selection range of floor manufacturing materials. Currently, in order to make the surface of a wood composite floor with medium and low-grade wood (such as fast-growing forests) as the surface board have the decorative effect of precious wood, most in the industry achieve this through roller direct printing or ink spraying. However, the coloring effect of roller direct printing is not rich, the roller printed texture is not clear, and the texture layering is poor, which requires high equipment design requirements; the pattern layer of ink spraying is thick, which poses higher requirements for subsequent processing and coating of a paint protection layer, and for the pattern formed by ink spraying, the resolution is low, and the pattern boundary is not clear, affecting the decorative effect. Summary of the Invention

[0004] Aiming at the deficiencies existing in the above-mentioned prior art, the purpose of the present invention is to provide a transferred wooden floor, by transferring various decorative patterns on the surface of the wooden floor, achieving a beautifying effect on the appearance of the floor, improving the value of the floor, and expanding the selection range of floor manufacturing materials.

[0005] A transferred wooden floor includes a wooden substrate, a transparent bottom coating, a transfer layer, and a transparent protective layer are sequentially arranged on one side of the wooden substrate, and a transparent back coating is arranged on the other side of the wooden substrate. The thickness of the wooden substrate is 5 - 22 mm, preferably 8 - 18 mm.

[0006] In a preferred disclosed example of the present invention, the wooden substrate is a single solid wood board.

[0007] Furthermore, the wooden substrate is a decorative surface board pasted on a base board; wherein, the base board includes but is not limited to particle board, multi-layer plywood, fiber board, stone plastic board, PVC, etc.; there is no special limitation on the wood species of the decorative surface board, and the thickness is 0.2 - 4 mm.

[0008] In a preferred disclosure example of the present invention, the transparent base coat is composed of one or more base coats, with a thickness of 0.03 - 0.5 mm, preferably 0.05 - 0.2 mm. The base coat is a cross-linked polymer of a mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light. Among them, the acrylate functional resin is a transparent resin mainly composed of a prepolymer and / or oligomer and / or monomer containing free radical polymerizable double bonds that can undergo cross-linking polymerization by ultraviolet light irradiation, and the content of the acrylate functional resin before polymerization is not less than 80%. The prepolymer, oligomer, and monomer can be used alone or in any ratio as a mixture.

[0009] Further, the mixture mainly composed of the acrylate functional resin is coated on one side of the wooden substrate and partially cured by ultraviolet light irradiation to form a transparent base coat.

[0010] Further, the mixture mainly composed of the acrylate functional resin is coated on one side of the wooden substrate and cured or partially cured by ultraviolet light irradiation to form a first base coat, and then continuously coated and cured or partially cured to form a second base coat, and so on. When multiple base coats are formed, the surface is completely cured to form a transparent protective layer. The topmost layer of the transparent base coat, that is, the layer closest to the transfer layer, is cured by ultraviolet light irradiation, and finally, the multiple base coats form a transparent base coat.

[0011] The partial curing in the present invention refers to curing the mixture coating mainly composed of the acrylate functional resin into a non-liquid coating, and having a sticky feeling when touched with the back of the hand.

[0012] Further, the transparent base coat can be colored. A colorant is added to the mixture mainly composed of the acrylate functional resin before cross-linking polymerization of the transparent base coat, and the mass percentage of the colorant accounts for about 0 - 10% of the transparent base coat.

[0013] Further, the transparent base coat also contains additives such as wear-resistant particles and flame retardants, which are added to the mixture mainly composed of the acrylate functional resin before cross-linking of the transparent base coat. The wear-resistant particles include, but are not limited to, alumina particles, silicon carbide, diamond, silicon oxide, etc., and the mass percentage accounts for about 0 - 10% of the transparent base coat. The wear-resistant particles are evenly dispersed in the mixture mainly composed of the acrylate functional resin with an average particle size between 5 - 50 μm, showing a narrow distribution of the average particle size, and the particles with a narrow distribution can have a standard deviation less than 30% of the average particle size.

[0014] Further, in the transparent base coat, the additives and colorants can only exist in the selected layer or layers of the multiple base coats, and the selected layer is one or more layers. For example, the first and third base coats contain wear-resistant particles, and the second base coat contains a colorant.

[0015] In a preferred disclosure example of the present invention, the transfer layer is a layer formed by peeling a transfer film and transferring it to the surface of a wooden substrate with a transparent bottom coating, with a thickness of 0.01 - 0.05 mm, preferably 0.02 - 0.03 mm. The transfer layer is arranged on the side of the transparent bottom coating and is laminated in the order of a transparent layer, a pattern layer, and an intermediate layer, and the pattern layer is disposed under the transparent layer.

[0016] Furthermore, the transparent layer is disposed on the transparent bottom coating by transfer. The resin used for the transparent layer includes, but is not limited to, vinyl chloride - vinyl acetate - based polymers, polyolefin - based resins such as polypropylene, polyvinyl chloride resins, etc., and is easily mixed with heat - transferable colorants such as sublimable dyes.

[0017] Furthermore, the pattern layer is a layer with a high - quality pattern disposed under the transparent layer. The pattern is not particularly limited and can be a wood grain, a water ripple pattern, a Canon pattern, a portrait, etc. The pattern layer has good durability, and the pattern layer contains a dye and an adhesive resin, which are dyes and adhesive resins well - known in the field of sublimation thermal transfer film technology. Among them, the dye includes, but is not limited to, methylene - based dyes, pyrrole azo dyes, azine - based dyes, acridine - based dyes, benzene azo dyes, triazole azo dyes, spiro pyran - based dyes, indoline spiro pyran - based dyes, rhodamine lactam - based dyes, etc. The adhesive resin includes, but is not limited to, methacrylic - based resins, polyurethane - based resins, polyester - based resins, etc.

[0018] Furthermore, the thickness ratio of the pattern layer to the transparent layer is 0.5 - 1:1.

[0019] Furthermore, the intermediate layer is a layer formed by an adhesive material, including, but not limited to, (meth)acrylic - based resins such as acrylic / methacrylic acid - based resins, polyester - based resins, polyamide - based resins, acrylate - based resins, ethylene - (meth)acrylate copolymers, ethylene - (meth)acrylic acid copolymers, polyurethane - based resins, cellulose - based resins, etc. The intermediate layer can contain only one material or can contain two or more materials.

[0020] Furthermore, the thickness of the intermediate layer is 1 - 10 μm, preferably 1 - 4 μm.

[0021] In a preferred disclosed example of the present invention, the transparent protective layer is composed of multiple coatings, with a thickness of 0.03 - 0.5 mm, preferably 0.05 - 0.2 mm. Among them, the coating is a cross-linked polymer of a mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light. The acrylate functional resin is a transparent resin mainly composed of a prepolymer and / or oligomer and / or monomer containing free radical polymerizable double bonds that can undergo cross-linking polymerization by ultraviolet light irradiation. The prepolymer, oligomer, and monomer can be used alone or in combination. The cross-linked polymer mainly composed of the acrylate functional resin has an acrylate functional resin content of not less than 80% before polymerization.

[0022] The transparent protective layer imparts high hardness, scratch resistance, abrasion resistance, water resistance, and stain resistance to the floor. The transparent protective layer coating can be formed in the following manner: Coat a UV-curable transparent protective layer coating on the transfer layer using known coating methods such as roll coating, blade coating, and gravure coating, and then cure it by irradiating ultraviolet light. The transparent protective layer is formed by repeatedly coating and curing in layers.

[0023] Furthermore, a mixture mainly composed of the first layer of acrylate functional resin is coated on the transfer layer and cured or partially cured by ultraviolet light radiation to form the first layer coating; subsequently, a mixture mainly composed of the second layer of acrylate functional resin is coated on the first layer coating, and then cured or partially cured by ultraviolet light radiation to form the second layer coating. One or more mixtures mainly composed of the acrylate functional resin are coated on the second layer coating. Once multiple coatings are formed, their surfaces can be fully cured to form a transparent protective layer, even if any one of the previous coatings / primers is only partially cured.

[0024] Furthermore, the partial curing is that the mixture coating mainly composed of the acrylate functional resin is cured into a non-liquid coating, and it has a sticky feeling when touched with the back of the hand.

[0025] Furthermore, additives such as wear-resistant particles and colorants are added to the transparent protective layer coating as needed, and are added to the mixture mainly composed of the acrylate functional resin before the cross-linking of the transparent protective layer.

[0026] The mass percentage of the colorant accounts for about 0 - 10% of the transparent protective layer.

[0027] The wear-resistant particles include, but are not limited to, alumina particles, silicon carbide, diamond, silicon oxide, etc. The mass percentage accounts for about 0 - 10% of the transparent protective layer. The wear-resistant particles are uniformly dispersed in the mixture mainly composed of the acrylate functional resin with an average particle size between 5 - 50 μm, having a narrow distribution of average particle size, and the particles with a narrow distribution can have a standard deviation less than 30% of the average particle size.

[0028] Further, the wear-resistant particles and colorants may only be present in selected layers among the multiple layers, and the selected layers may be one or more layers. For example, the second and fourth layers of the coating contain wear-resistant particles, and the first and fourth layers of the coating contain colorants.

[0029] Further, the mixture mainly composed of the acrylate functional resin may include other additives and fillers, including but not limited to surfactants, tackifiers, peptizers, matting agents, lubricants, anti-settling agents, wax powders, zinc stearate, defoamers, toughening agents, additives, flame retardants, antioxidants, and stabilizers. The addition of additives needs to meet the requirement of obtaining the desired final properties without reducing the original properties of the transparent protective layer.

[0030] In a preferred disclosed example of the present invention, the transparent back coating is formed by coating a cross-linked polymer of a mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light, with a thickness of 0.01 - 0.1 mm, preferably 0.02 - 0.05 mm. The acrylate functional resin is a transparent resin mainly composed of a prepolymer and / or oligomer and / or monomer containing free radical polymerizable double bonds that can undergo cross-linking polymerization by ultraviolet light irradiation. The prepolymer, oligomer, and monomer can be used alone or in any ratio by mixing multiple types. The cross-linked polymer mainly composed of the acrylate functional resin has an acrylate functional resin content of not less than 70% before polymerization.

[0031] The mixture mainly composed of the acrylate functional resin is coated on the back of the wooden substrate and cured by ultraviolet radiation to form the transparent back coating.

[0032] Further, the transparent back coating can be colored, that is, a known colorant is added to the mixture mainly composed of the acrylate functional resin before the cross-linking polymerization of the transparent back coating.

[0033] Further, wear-resistant particles can be added to the transparent back coating as needed.

[0034] The wear-resistant particles include but are not limited to alumina particles, silicon carbide, diamond, silicon oxide, etc. The mass percentage accounts for about 0 - 10% of the transparent protective layer. The wear-resistant particles are evenly dispersed in the mixture mainly composed of the acrylate functional resin with an average particle size between 5 - 50 μm, showing a narrow distribution of the average particle size, and the particles with a narrow distribution may have a standard deviation less than 30% of the average particle size.

[0035] The colorant is a known colorant that gives different decorative effects to the transparent back coating, including but not limited to azo dyes, carbon black, titanium white, anthraquinone pigments, phthalocyanine pigments, and isoindoline pigments. The mass percentage of the colorant accounts for about 0 - 10% of the transparent back coating.

[0036] Beneficial effects

[0037] For the transfer-printed wooden floor disclosed by the present invention, the transferred pattern is placed on a transparent bottom coating with a flat and dense surface, which will not affect the overall effect of the wood grain. The transferred pattern layer is composed of sublimation dyes, with vivid image quality, visual effects close to photos, and clear boundaries. The transferred pattern, as a supplement to the decorative effect of the wood grain on the floor surface, greatly enriches the aesthetics of the floor. The preparation process is simple, and the transfer film for transfer printing does not require secondary treatment and can be directly transferred. Description of the drawings

[0038] Figure 1 . Schematic structural diagram of the transfer-printed wooden floor of Example 1,

[0039] Figure 2 . Schematic structural diagram of the transfer-printed wooden floor of Example 2,

[0040] Figure 3 . Schematic structural diagram of the transfer layer,

[0041] Among them, the names of each component are: 1, wooden substrate; 11, base board; 12, decorative surface board; 2, transparent bottom coating; 3, transfer layer; 4, transparent protective layer; 5, transparent back coating; 31, transparent layer; 32, pattern layer; 33, intermediate layer. Detailed implementation manners

[0042] The present invention will be described in detail below in conjunction with the embodiments, so that those skilled in the art can better understand the present invention. However, the present invention is not limited to the following embodiments.

[0043] Example 1

[0044] Combined with Figure 1 、 3 , the present invention will be further described.

[0045] A transfer-printed wooden floor includes a wooden substrate 1 and, sequentially arranged on one side of the wooden substrate, a transparent bottom coating 2, a transfer layer 3, a transparent protective layer 4, and a transparent back coating 5 provided on the other side of the wooden substrate. The transparent bottom coating 2 is the layer on one side of the wooden substrate 1 and closest to the wooden substrate.

[0046] The wooden substrate 1 is a single-piece solid wood, the wood species is hard maple, and the thickness is 15 mm.

[0047] A transparent bottom coating 2 is provided on one side of a wooden substrate 1. A mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light is roll-coated on the wooden substrate 1. It is partially cured by ultraviolet radiation to form a first bottom coating, and then the mixture mainly composed of the acrylate functional resin is coated on the first coating, and then cured by ultraviolet radiation to form a second bottom coating; the second bottom coating is sanded by a sanding device. Subsequently, the mixture mainly composed of the acrylate functional resin is coated on the second coating, and then partially cured by ultraviolet radiation to form a third bottom coating, thus forming the transparent bottom coating 2

[0048] The first bottom coating contains a colorant. The colorant is an azo dye, with a mass percentage of 2% in the mixture mainly composed of the acrylate functional resin. The second bottom coating contains wear-resistant particles. The wear-resistant particles are alumina, with an average particle size of 5 - 50 μm. The particles with a narrow distribution can have a standard deviation less than 30% of the average particle size, and the mass percentage in the mixture mainly composed of the acrylate functional resin is 8%.

[0049] The rolled transfer film enters the transfer device, and the transfer layer 3 is detached from the substrate of the transfer film by infrared heating and transferred to one side of the transparent bottom coating 2 of the wooden substrate 1. The transfer layer 3 has a transparent layer 31 and an intermediate layer 33 laminated in this order from the side of the transparent bottom coating 2. The pattern layer 32 is disposed within the transparent layer 31. The intermediate layer 33 is formed of ethylene-(meth)acrylic acid copolymer with a thickness of 4 μm. The transparent layer 31 is a polyolefin resin such as polypropylene with a thickness of 4 μm. The pattern layer 32 is disposed within the transparent layer 31, and the thickness ratio is 0.8. The pattern layer 3 uses a sublimable dye, which is a mixture of a methacrylic acid resin and a phenylazo dye.

[0050] A transparent protective layer 4 is provided on the side of the wooden substrate 1 close to the transfer layer 3. A mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light is roll-coated on the transfer layer 3. It is cured by ultraviolet radiation to form a first coating, and at the same time, the third bottom coating in the transparent bottom coating is also cured. The first coating is sanded by a sanding device. Subsequently, the mixture mainly composed of the acrylate functional resin is coated on the first coating, and then partially cured by ultraviolet radiation to form a second coating; subsequently, the mixture mainly composed of the acrylate functional resin is coated on the second coating, and then partially cured by ultraviolet radiation to form a third coating; subsequently, the mixture mainly composed of the acrylate functional resin is coated on the third coating, and then cured by ultraviolet radiation to form a fourth coating, thus forming the transparent protective layer 4. The third coating contains wear-resistant particles. The wear-resistant particles are alumina, with an average particle size of 5 - 50 μm. The particles with a narrow distribution can have a standard deviation less than 30% of the average particle size, and the mass percentage in the mixture mainly composed of the acrylate functional resin is 8%.

[0051] The mass percentages of the defoamer, anti-settling agent, thickener, stain-resistant agent, and stabilizer in the mixture mainly composed of acrylate-functional resin are 0.2%, 0.2%, 0.3%, 0.2%, and 0.2% respectively.

[0052] On the other side of the wooden substrate, a mixture mainly composed of acrylate-functional resin that can be cured by ultraviolet light is roll-coated, and is cured by ultraviolet light radiation to form a transparent back coating 5. The transparent back coating 5 contains a colorant, and the colorant is an azo dye, and its mass percentage in the mixture mainly composed of acrylate-functional resin is 2%.

[0053] Example 2

[0054] Combined Figure 2 , Figure 3 , the present invention will be further described.

[0055] A transfer wooden floor includes a wooden substrate 1 and a transparent bottom coating 2, a transfer layer 3, a transparent protective layer 4 sequentially arranged on one side of the wooden substrate, and a transparent back coating 5 arranged on the other side of the wooden substrate. The transparent bottom coating 2 is the layer on one side of the wooden substrate 1 and closest to the wooden substrate.

[0056] The wooden substrate 1 is composed of a base board 11 and a decorative surface board 12. The base board 11 is a multi-layer plywood, and the decorative surface board 12 is a 0.6 mm black walnut surface board. The thickness of the wooden substrate is 15 mm.

[0057] A transparent bottom coating 2 is provided on one side of the wooden substrate 1. A mixture mainly composed of acrylate-functional resin that can be cured by ultraviolet light is roll-coated on the decorative surface board 12. It is partially cured by ultraviolet light radiation to form a first bottom coating, and then the mixture mainly composed of the acrylate-functional resin is coated on the first coating, and then cured by ultraviolet light radiation to form a second bottom coating; the second bottom coating is sanded by a sanding device. Subsequently, the mixture mainly composed of the acrylate-functional resin is coated on the second coating, and then partially cured by ultraviolet light radiation to form a third bottom coating, thus forming the transparent bottom coating 2

[0058] The first bottom coating contains a colorant. The colorant is an azo dye, and its mass percentage in the mixture mainly composed of acrylate-functional resin is 3%. The first bottom coating contains wear-resistant particles. The wear-resistant particles are alumina, with an average particle size of 5 - 50 μm. The particles with a narrow distribution can have a standard deviation less than 30% of the average particle size, and its mass percentage in the mixture mainly composed of acrylate-functional resin is 7%.

[0059] The rolled transfer film enters the transfer device, and the transfer layer 3 is detached from the substrate of the transfer film by means of infrared heating and transferred to one side of the transparent bottom coating 2 of the wood substrate 1. The transfer layer 3 is laminated with a transparent layer 31 and an intermediate layer 33 in this order from the side of the transparent bottom coating 2. The pattern layer 32 is disposed within the transparent layer 31. The intermediate layer 33 is formed of ethylene-(meth)acrylic acid copolymer and has a thickness of 5 μm. The transparent layer 31 is a polyolefin resin such as polypropylene and has a thickness of 4 μm. The pattern layer 32 is disposed within the transparent layer 31 and has a thickness ratio of 0.8. The pattern layer 3 uses a sublimable dye and is a mixture of a methacrylic acid resin and a benzene azo dye.

[0060] A transparent protective layer 4 is provided on one side of the wood substrate 1 close to the transfer layer 3. A mixture mainly composed of an acrylate functional resin is roll-coated on the transfer layer 3 and cured by ultraviolet radiation to form a first coating, and at the same time, the third bottom coating in the transparent bottom coating is also cured. The first coating is sanded by a sanding device. Subsequently, the mixture mainly composed of the acrylate functional resin is coated on the first coating, and then partially cured by ultraviolet radiation to form a second coating; subsequently, the mixture mainly composed of the acrylate functional resin is coated on the second coating, and then partially cured by ultraviolet radiation to form a third coating; subsequently, the mixture mainly composed of the acrylate functional resin is coated on the third coating, and then partially cured by ultraviolet radiation to form a fourth coating; subsequently, the mixture mainly composed of the acrylate functional resin is coated on the fourth coating, and then partially cured by ultraviolet radiation to form a fifth coating, thus forming the transparent protective layer 4.

[0061] The second coating contains wear-resistant particles. The wear-resistant particles are alumina, with an average particle size of 5 - 50 μm. The narrowly distributed particles may have a standard deviation less than 30% of the average particle size, and the mass percentage in the mixture mainly composed of the acrylate functional resin is 8%.

[0062] The mass percentages of the defoaming agent, anti-settling agent, tackifier, stain-resistant agent, and stabilizer in the mixture mainly composed of the acrylate functional resin are 0.2%, 0.2%, 0.4%, 0.3%, and 0.2% respectively.

[0063] A mixture mainly composed of an acrylate functional resin is roll-coated on the other side of the wood substrate and cured by ultraviolet radiation to form a transparent back coating 5. The transparent back coating 5 contains a colorant, and the colorant is an azo dye, with a mass percentage of 4% in the mixture mainly composed of the acrylate functional resin.

[0064] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the description of the present invention, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present invention.

Claims

1. A transfer wooden floor, comprising a wooden substrate (1), characterized in that: A transparent base coat (2), a transfer layer (3), and a transparent protective layer (4) are sequentially provided on one side of a wooden substrate, and a transparent back coat (5) is provided on the other side of the wooden substrate. The thickness of the wooden substrate (1) is 5 to 22 mm. Among them, the transparent base coat (2) is composed of one or more base coats, and the thickness of the transparent base coat (2) is 0.03 to 0.5 mm. The base coat is a cross-linked polymer of a mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light. Among them, the acrylate functional resin is a transparent resin mainly composed of a prepolymer and / or oligomer and / or monomer containing a free radical polymerizable double bond that can undergo cross-linking polymerization by ultraviolet light irradiation. The content of the acrylate functional resin before polymerization is not less than 80%. The prepolymer, oligomer, and monomer can be used alone or in any ratio in combination. The transfer layer (3) is a layer formed by peeling a transfer film and transferring it to the surface of the wooden substrate (1) having a transparent base coat (2) on its surface. The thickness is 0.01 to 0.05 mm, and it is laminated in the order of a transparent layer (31), a pattern layer (32), and an intermediate layer (33) on the side of the transparent base coat. The pattern layer (32) is provided under the transparent layer (31). The transparent protective layer (4) is composed of multiple coatings, and the thickness is 0.03 to 0.5 mm. The coating is a cross-linked polymer of a mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light. The transparent back coat (5) is formed by coating a cross-linked polymer of a mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light, and the thickness is 0.01 to 0.1 mm.

2. The transfer wood floor according to claim 1, characterized in that: The wooden substrate (1) is a solid wood board. Alternatively, the wooden substrate (1) is a substrate board (11) with a decorative surface board (12) pasted on it. Among them, the substrate board (11) includes, but is not limited to, particle board, multi-ply plywood, fiber board, stone plastic board, and PVC. The thickness of the decorative surface board (12) is 0.2 to 4 mm.

3. The transfer wooden floor according to claim 1, characterized in that: The thickness of the transparent base coat (2) is 0.05 to 0.2 mm.

4. The transfer wooden floor according to claim 1, wherein: The transparent base coat (2) can be colored. A colorant is added to the mixture mainly composed of the acrylate functional resin before the cross-linking polymerization of the transparent base coat. The mass percentage of the colorant accounts for 0 to 10% of the transparent base coat.

5. The transfer printing wooden floor according to claim 1, characterized in that: The transparent base coat (2) also contains wear-resistant particles and flame retardant additives, which are added to the mixture mainly composed of the acrylate functional resin before the cross-linking of the transparent base coat.

6. The transfer printing wooden floor according to claim 1, characterized in that: In the transparent base coat (2), the additives and colorants are only present in the selected layer or layers of the multi-layer base coat. The selected layer is one or more layers.

7. The transfer wooden floor according to claim 1, characterized in that: The thickness of the wooden substrate (1) is 8 to 18 mm.

8. The transfer wooden floor according to claim 1, wherein: The thickness of the transfer layer (3) is 0.02 to 0.03 mm.

9. The transfer wooden floor according to claim 1, characterized in that: The transparent layer (31) is disposed on the transparent base coat (2) by transfer; the pattern layer (32) is a layer of a high-quality pattern disposed under the transparent layer (31); the thickness ratio of the pattern layer (32) to the transparent layer (31) is 0.5 to 1:1; the intermediate layer (33) has a thickness of 1 to 10 μm.

10. The transfer printed wooden floor according to claim 1, wherein: The intermediate layer (33) has a thickness of 1 to 4 μm.

11. The transfer wood floor according to claim 1, wherein: The transparent protective layer (4) has a thickness of 0.05 to 0.2 mm.

12. The transfer printing wooden floor according to claim 1, characterized in that: The transparent back coat (5) is formed by coating a crosslinked polymer of a mixture mainly composed of an acrylate functional resin that can be cured by ultraviolet light, and has a thickness of 0.01 to 0.1 mm.

13. The transfer wooden floor according to claim 1, wherein: The transparent back coat (5) has a thickness of 0.2 to 0.05 mm.

14. The transfer printed wooden floor according to claim 1, wherein: The transparent back coat (5) can be colored, that is, a known colorant is added to the mixture mainly composed of the acrylate functional resin before the crosslinking polymerization of the transparent back coat.

15. The transfer wooden floor according to claim 1, wherein: The transparent back coat (5) can be added with wear-resistant particles.

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