阅读说明：本技术 一种基于3d打印技术的木质地板表面涂饰方法 (Wooden floor surface coating method based on 3D printing technology ) 是由 姜俊 吴忠其 吴丽虹 翁园园 吴玉琪 单志超 冯燕飞 于 2020-06-02 设计创作，主要内容包括：本申请公开了一种基于3D打印技术的木质地板表面涂饰方法,依次包括以下工序步骤：S1、型材表面处理；S2、扫描一定厚度的目标材料切面,形成色彩图像信息和三维模型；S3、根据所述三维模型,在所述型材表面层叠打印,以形成的纹理结构层；S4、根据所述色彩图像信息,在所述纹理层之上UV打印,以形成纹理图案层；在步骤S4中,使用添加有耐磨原料的UV油墨进行UV打印。其可相对较为逼真地再现珍贵硬阔叶材的凹凸、拉丝、木射线、管孔等纹理结构,且形成的3D涂饰层具有立体感。(The application discloses wooden floor surface coating method based on 3D printing technology includes the following process steps in proper order: s1, surface treatment of the profile; s2, scanning a target material section with a certain thickness to form color image information and a three-dimensional model; s3, according to the three-dimensional model, laminating and printing on the surface of the profile to form a texture structure layer; s4, according to the color image information, performing UV printing on the texture layer to form a texture pattern layer; in step S4, UV printing is performed using UV ink to which an abrasion resistant raw material is added. The texture structures of concave-convex, wire drawing, wood rays, pipe holes and the like of precious hard broad-leaved wood can be relatively vividly reproduced, and the formed 3D coating layer has stereoscopic impression.)

1. A wooden floor surface coating method based on a 3D printing technology is characterized by sequentially comprising the following steps:

s1, surface treatment of the section bar (800);

s2, scanning a target material section with a certain thickness to form color image information and a three-dimensional model;

s3, according to the three-dimensional model, laminating and printing on the surface of the profile (800) to form a texture structure layer (100);

s4, UV printing on the texture structure layer (100) according to the color image information to form a texture pattern layer (200);

in step S4, UV printing is performed using UV ink to which an abrasion resistant raw material is added.

2. The 3D printing technology based wood floor surface finishing method of claim 1, wherein the wear resistant raw material is one of alumina powder, silica powder, alumina stickies, or silica stickies.

3. The wood floor surface finishing method based on the 3D printing technology as claimed in claim 1, wherein the scan thickness of the target material section is 0.1 to 5mm in step S2.

4. The wood floor surface finishing method based on 3D printing technology of claim 1, wherein in step S3, a white UV ink is used for lamination printing and is cured by UV light to form the texture structure layer (100).

5. The wood floor surface finishing method based on 3D printing technology as claimed in claim 4, wherein the thickness of the texture structure layer (100) is 0.1-0.3 mm, and the layered thickness of the lamination printing is 20-30 μm.

6. The wood floor surface finishing method based on the 3D printing technology as claimed in claim 1, wherein in the step S3, the laminate printing is performed using a raw material, which is wood flour having a particle size of 20-50 μm, abrasion resistant powder including thermosetting resin, and heat curing is performed to form the texture structure layer (100).

7. The wood floor surface finishing method based on 3D printing technology as claimed in claim 6, wherein the thickness of the texture structure layer (100) is 2-5 mm, and the layered thickness of the lamination printing is 100-500 μm.

8. The method for finishing the surface of a wooden floor based on a 3D printing technology as claimed in claim 6, wherein the wear-resistant powder is Al203 powder or SiO2 powder, and the ratio of the addition amount of the wear-resistant powder to the addition amount of the wood flour is 1 (2-4).

9. The wood floor surface finishing method based on 3D printing technology of claim 1, comprising the following sub-steps in step S3:

s3-1, printing a 1 st layer to a 2 nd last layer or a 3 rd last layer on the surface of the profile (800) in a laminating way according to the three-dimensional model to form a basic texture structure layer (110);

s3-2, printing a 4 th layer or a 5 th layer to a last layer in a laminating way on the basic texture structure layer (110) by using transparent or semitransparent UV ink according to the three-dimensional model to form a texture correction layer (120).

10. The wood floor surface finishing method based on 3D printing technology according to claim 9, characterized in that the thickness of the layer in the grain modification layer (120) is 20-30 μ ι η.

Technical Field

The application relates to the technical field of coating, in particular to a wooden floor surface coating method based on a 3D printing technology.

Background

The high value-added utilization of low-grade profiles (for example, plywood, high-density fiberboard, oriented strand board, etc. made of fast-growing wood, etc.) has been a subject of research in the field of wood processing. One solution to high value-added utilization of low-grade profiles is to make wood grain forming high-grade wood (e.g., precious wood or a-grade hardwood) on the surface of the low-grade profile by 3D printing. In the prior art, the solution includes the following three specific implementation methods:

(1) the method is limited by the number of roller plates, the types of wood textures which can be manufactured are very limited, and the repetition rate of the same wood texture after the product is paved is high;

(2) the method can print any one of scanned wood textures, but is limited to a plane printing mode, so that the wood textures lack three-dimensional sense and the printed wood textures have low fidelity;

(3) the layer-by-layer ink-jet printing is to print the scanned pattern layer (UV pattern layer or ink pattern layer) on the surface of the section bar, and then spray transparent or semitransparent UV or ink on the specific position on the pattern layer to form the texture layer, but the texture layer is covered on the pattern layer, so the pattern and the texture of the wood texture prepared by the method are separated visually, and the fidelity of the printed wood texture is low.

In view of the foregoing, a need exists for a method of finishing a wood floor surface that provides a high degree of fidelity of wood grain.

Disclosure of Invention

The technical purpose of the present application is to overcome the above technical problems, and to provide a method for coating a surface of a wooden floor based on a 3D printing technique, which can reproduce texture structures such as concave and convex, drawn lines, wood rays, pipe holes, etc. of precious hard broad-leaved wood relatively vividly, and the formed 3D coating layer has a stereoscopic impression.

In order to achieve the technical purpose, the application discloses a wood floor surface coating method based on a 3D printing technology, which sequentially comprises the following steps of:

s1, surface treatment of the profile;

s2, scanning a target material section with a certain thickness to form color image information and a three-dimensional model;

s3, according to the three-dimensional model, laminating and printing on the surface of the profile to form a texture structure layer;

s4, according to the color image information, performing UV printing on the texture layer to form a texture pattern layer;

in step S4, UV printing is performed using UV ink to which an abrasion resistant raw material is added.

By the method, the texture structure layer is printed firstly to form texture structures including wood rays, pipe holes and the like of the section of the target material on the surface of the section bar, and then the texture pattern layer is printed on the texture structure layer, namely, the texture structure of the natural color is colored, so that the reproduced wood texture is not limited to the textures of concave-convex, wire drawing and the like on the surface of the wood, but also comprises the structures of finer wood rays, pipe holes and the like, and therefore, the method has more vivid finishing effect; and the texture structure layer and the texture pattern layer are combined to have stronger integral sense, the texture pattern layer is more vivid due to the reflection of the texture structure layer, and the 3D coating layer has three-dimensional sense.

Preferably, the abrasion-resistant raw material is alumina powder, silica powder, alumina paste, or silica paste.

Preferably, in step S2, the scan thickness of the target material section is 0.1-5 mm.

Preferably, in step S3, the lamination printing is performed using white UV ink, and the texture structure layer is formed by UV light curing.

Preferably, the thickness of the texture structure layer is 0.1-0.3 mm, and the layering thickness of the lamination printing is 20-30 μm.

Preferably, in step S3, the lamination printing is performed using a raw material, which is wood powder including thermosetting resin having a particle size of 20 to 50 μm, abrasion resistant powder, and is thermally cured to form the texture structure layer.

Preferably, the thickness of the texture structure layer is 2-5 mm, and the layering thickness of the lamination printing is 100-500 mu m.

Preferably, the wear-resistant powder is Al₂0₃Powder or SiO₂And the ratio of the addition amount of the wear-resistant powder to the addition amount of the wood powder is 1 (2-4).

Preferably, in step S3, the following substeps are included:

s3-1, according to the three-dimensional model, printing the 1 st layering to the 4 th layer or the 5 th layer on the surface of the section in a laminating mode to form a basic texture structure layer;

s3-2, according to the three-dimensional model, printing the 2 nd last layer or the 3 rd last layer to the last layer in a laminating mode by using transparent or semitransparent UV ink on the basic texture structure layer to form a texture correction layer.

Preferably, the thickness of the lamination layer in the texture correction layer is 20-30 μm.

Preferably, in step S3, the thermal expansion particles are printed on the uncured textured layer in a lamination manner, and then the textured layer is cured.

Preferably, after the texture layer is solidified and cooled, the thermal expansion particles are taken out, and then step S4 is performed.

Preferably, the thermally expandable fine particles have a particle diameter of 10 to 20 μm.

By the method, the texture structure layer is printed firstly to form texture structures including wood rays, pipe holes and the like of the section of the target material on the surface of the section bar, and then the texture pattern layer is printed on the texture structure layer, namely, the white texture structure is colored, so that the reproduced wood texture is not limited to the textures of concave-convex shapes, wire drawing and the like on the surface of the wood, but also comprises finer structures of the wood rays, the pipe holes and the like, and therefore, the method has more vivid finishing effect; and the texture structure layer and the texture pattern layer are combined to have stronger integral sense, the texture pattern layer is more vivid due to the reflection of the texture structure layer, and the 3D coating layer has three-dimensional sense.

Furthermore, white UV printing ink is used for laminating and printing, so that the surface of the section bar can be primed while the texture structure layer is manufactured, and the coloring effect of the texture pattern layer on the texture structure layer is effectively ensured. Meanwhile, the thickness of the texture structure layer can be effectively improved by performing laminating printing on the original material, so that the 3D coating layer is more vivid; and the improvement of the thickness of the texture structure layer can further enrich the treatment process of the 3D coating layer, such as an antique treatment process of copying and printing a large arc chamfer, so that the coated low-grade sectional material has the antique treatment effect of thick-skinned precious hard broad-leaved wood.

Furthermore, through the arrangement of the texture trimming layer, the printing misalignment of the texture structure layer and the texture pattern layer can be effectively trimmed visually, and the stereoscopic impression of the basic texture structure layer is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

Fig. 1 is a schematic structural diagram of a 3D coating layer of a wood floor based on 3D printing technology according to embodiment 1 of the present application;

fig. 2 is a schematic structural diagram of a 3D coating layer of a wood floor based on 3D printing technology according to embodiment 2 of the present application;

fig. 3 is a schematic structural diagram of a 3D coating layer of a wood floor based on 3D printing technology according to embodiment 3 of the present application;

in the drawings: 100-texture structure layer, 110-basic texture structure layer, 120-texture correction layer, 200-texture pattern layer and 800-section bar.

Detailed Description

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.