Digital printing floor with rubber-wood finger joint core

Abstract

The utility model belongs to the technical field of building decoration materials, and relates to a rubber wood finger joint core digital printing floor which comprises a core layer, and a coating layer, a printing layer, a primer layer, a surface layer and a first balance layer are sequentially arranged on the surface of the core layer from top to bottom. A second balance layer and a back plate are sequentially arranged below the back face of the core layer, the core layer is made of rubber wood finger joint materials, finger joint teeth in the length direction of rubber wood laths are in finger joint, splicing in the width direction of the rubber wood laths are adopted, stress grooves are formed in the surfaces, away from the finger joint teeth, of every two adjacent rubber wood laths, the width of each stress groove is 0.5-0.6 mm, the depth of each stress groove is 1.0-2.0 mm, and the width of each stress groove is 0.5-0.6 mm. The length of each stress groove is between the width of one rubber wood lath and the width of two rubber wood laths, and the distance between every two adjacent stress grooves is not smaller than 0.2 mm; and the thickness of the printing layer is 0.01 to 0.1 mm. Through the adjustment of the structure, the stability of the structure is controlled, and the structure is not easy to deform and crack; and low-grade wood raw materials are fully utilized by combining paint coating with digital printing.

Description

Technical Field

[0001] This utility model belongs to the technical field of building decoration materials, and relates to flooring, and more particularly to a digitally printed rubberwood finger-jointed core flooring. Background Technology

[0002] With the development of the building materials industry, timber resources are becoming increasingly scarce. High-grade raw materials for flooring are becoming increasingly rare. The domestic consumer market has a low acceptance of defects such as knots, cracks, and color differences in low-grade timber raw materials. Therefore, the development concept of high-performance low-grade materials is becoming increasingly important, and making high-grade products from low-grade raw materials has become an urgent problem to be solved.

[0003] In existing technologies, the biggest problem encountered when printing on wooden flooring is floor warping. Warping causes unevenness on the floor surface, resulting in unclear printed textures and affecting the pass rate of printed flooring. CN221194087U discloses a three-layer rubberwood core flooring. This structure includes rubberwood finger-jointed material, a first mesh buffer layer on the upper surface of the rubberwood finger-jointed material, a surface layer on the upper surface of the first mesh buffer layer, a second mesh buffer layer on the lower surface of the rubberwood finger-jointed material, and a base plate on the lower surface of the second mesh buffer layer. This technology uses finger-jointed rubberwood as the core board, but it still has a three-layer structure. Although the buffer layer can have a certain effect on preventing cracking, it cannot effectively control the shape of the flooring. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a rubberwood finger-jointed core digital printing floor.

[0005] Technical solution

[0006] A digitally printed rubberwood finger-jointed core floor includes a core layer. From top to bottom, the surface of the core layer comprises a coating layer, a printing layer, a primer layer, a top layer, and a first balancing layer. Below the back of the core layer are a second balancing layer and a backing board. All layers below the top layer are bonded together with adhesive. The core layer is made of finger-jointed rubberwood, joined by finger-joints along the length of rubberwood strips and spliced ​​along the width. Stress grooves are provided on the surfaces of adjacent rubberwood strips away from the finger-joints. The stress grooves are 0.5–0.6 mm wide, 1.0–2.0 mm deep, and between the width of one and two rubberwood strips, with a spacing of not less than 0.2 mm between adjacent stress grooves. The printing layer has a thickness of 0.01–0.1 mm.

[0007] In a preferred embodiment of this utility model, the coating layer has a thickness of 0.01 to 0.1 mm, with the bottom layer being a cured layer of wear-resistant primer and the top layer being a cured layer of topcoat.

[0008] In a preferred embodiment of this utility model, the primer layer is an oil-based white base coat, and the top coat used in this utility model is a low-grade wood veneer, which is covered with an oil-based white base coat.

[0009] In a preferred embodiment of this utility model, the surface layer is a hardwood veneer of 0.45–1.2 mm, and the grain direction is consistent with the grain direction of the core layer and the back panel.

[0010] In a preferred embodiment of this utility model, both the first balancing layer and the second balancing layer are 1-3mm thick waterproof high-density particleboard with a density of 0.9-1.2g / cm³. 2 Particleboard, lacking the tensile strength of wood fibers, serves as a buffer layer between the surface, core, and back layers, ensuring the stability of the board shape.

[0011] In a preferred embodiment of this utility model, the rubberwood strip has a moisture content of 6-9%, a length of 8-12mm, and a finger joint length of 6cm. The finger joints and spliced ​​parts are glued together. The length of the finger joints in adjacent width directions is not less than 5cm to ensure the strength of the core layer.

[0012] In a preferred embodiment of this utility model, the distance between the stress groove and both ends of the rubberwood strip along its length is less than 3cm, and the angle of the stress groove is 180°.

[0013] In a preferred embodiment of this utility model, the back panel is made of softwood with a thickness of 1.2 to 1.5 mm, such as poplar, birch, or pine, and the grain direction is consistent with the grain direction of the core layer.

[0014] Beneficial effects

[0015] This utility model discloses a digitally printed rubberwood finger-jointed core flooring. By adjusting the structure, the overall structural stability of the flooring is controlled, making it less prone to deformation and cracking. At the same time, the combination of paint finishing and digital printing makes full use of low-grade wood raw materials, which can show high performance effects and effectively maintain the stable green development of the flooring industry. It can also replace the original hardwood surface with a fast-growing wood surface, promoting sustainable development. The physical and chemical properties of the digitally printed products can meet the requirements of the national standard GB / T18103-2013 "Solid Wood Composite Flooring". The product effect is realistic and the appearance is indistinguishable from solid wood flooring. Attached Figure Description

[0016] Figure 1 Schematic diagram of the structure of rubberwood core digitally printed flooring;

[0017] Figure 2 Schematic diagram of the core layer (rubberwood finger-jointed material);

[0018] Figure 3 Schematic diagram of the structure of rubberwood strips and finger joints;

[0019] Figure 4 Schematic diagram of stress groove distribution on the surface of the core layer (rubberwood finger-jointed material);

[0020] The markings are as follows: 1. Coating layer, 2. Printing layer, 3. Primer layer, 4. Top layer, 5. First balancing layer, 6. Core layer, 61. Finger joint teeth, 62. Rubberwood strips, 7. Second balancing layer, 8. Back panel. Detailed Implementation

[0021] The present invention will be described in detail below with reference to the embodiments, so that those skilled in the art can better understand the present invention, but the present invention is not limited to the following embodiments.

[0022] Example 1

[0023] A digitally printed rubberwood finger-jointed core floor includes a core layer 6. From top to bottom, the surface of the core layer 6 comprises a coating layer 1, a printing layer 2, a primer layer 3, a surface layer 4, and a first balancing layer 5. Below the back of the core layer 6 are a second balancing layer 7 and a backing board 8. All layers below the surface layer are bonded together with adhesive. The core layer 6 is made of rubberwood finger-jointed material, joined by finger-joints 61 along the length of rubberwood strips 62 and spliced ​​along the width. Stress grooves are provided on the surfaces of adjacent rubberwood strips 62 away from the finger-joints 61. The stress grooves are 0.5–0.6 mm wide, 1.0–2.0 mm deep, and between the width of one and two rubberwood strips 62. The distance between two adjacent stress grooves is not less than 0.2 mm. The printing layer 2 has a thickness of 0.01–0.1 mm.

[0024] Example 2

[0025] A digitally printed rubberwood finger-jointed core flooring includes a core layer 6. From top to bottom, the surface of the core layer 6 comprises a coating layer 1, a printing layer 2, a primer layer 3, a surface layer 4, and a first balancing layer 5. Below the back of the core layer 6 are a second balancing layer 7 and a backing board 8. All layers below the surface layer are bonded together with adhesive. The core layer 6 is made of finger-jointed rubberwood, formed by finger-jointing rubberwood strips 62 along their length using finger-joint teeth 61, and splicing them along their width. The rubberwood strips 62 have a moisture content of 6-9%, a length of 8-12 mm, and the finger-joint teeth 61 are 6 cm long. The spliced ​​parts are glued together; the length of the finger joint teeth in the adjacent width direction is not less than 5cm; stress grooves are provided on the surfaces of two adjacent rubberwood strips 62 away from the finger joint teeth 61, the distance between the stress grooves and the two ends of the rubberwood strips 62 in the length direction is less than 3cm, and the angle of the stress grooves is 180°; the width of the stress grooves is 0.5-0.6mm, the depth is 1.0-2.0mm, the length is between the width of one rubberwood strip 62 and two rubberwood strips 62, and the distance between two adjacent stress grooves is not less than 0.2mm; the thickness of the printed layer 2 is 0.01-0.1mm.

[0026] Example 3

[0027] A digitally printed rubberwood finger-jointed core flooring includes a core layer 6. From top to bottom, the surface of the core layer 6 comprises a coating layer 1, a printing layer 2, a primer layer 3, a surface layer 4, and a first balancing layer 5. Below the back of the core layer 6 are a second balancing layer 7 and a backing board 8. All layers below the surface layer are bonded together with adhesive. The core layer 6 is made of rubberwood finger-jointed material, formed by finger-jointing rubberwood strips 62 along their length using finger-joint teeth 61, and splicing them along their width. The rubberwood strips 62 have a moisture content of 6-9%, a length of 8-12 mm, and finger-joint teeth 61 are 6 cm long. The finger-jointed and spliced ​​portions are glued together. The length of adjacent finger-joint teeth along their width is not less than 5 cm. m; Stress grooves are provided on the surfaces of two adjacent rubberwood strips 62 away from the finger joint teeth 61. The distance between the stress grooves and the two ends of the rubberwood strips 62 in the length direction is less than 3cm, and the angle of the stress grooves is 180°; The width of the stress grooves is 0.5-0.6mm, the depth is 1.0-2.0mm, and the length is between the width of one rubberwood strip 62 and two rubberwood strips 62. The distance between two adjacent stress grooves is not less than 0.2mm; The thickness of the coating layer 1 is 0.01-0.1mm, the bottom layer is a cured layer of wear-resistant primer, and the top layer is a cured layer of topcoat; The thickness of the printing layer 2 is 0.01-0.1mm; The primer layer 3 is an oil-based white base layer.

[0028] Example 4

[0029] A digitally printed rubberwood finger-jointed core flooring includes a core layer 6. From top to bottom, the surface of the core layer 6 comprises a coating layer 1, a printing layer 2, a primer layer 3, a surface layer 4, and a first balancing layer 5. Below the back of the core layer 6 are a second balancing layer 7 and a backing board 8. All layers below the surface layer are bonded together with adhesive. The core layer 6 is made of rubberwood finger-jointed material, formed by finger-jointing rubberwood strips 62 along their length using finger-joint teeth 61, and splicing them along their width. The rubberwood strips 62 have a moisture content of 6-9%, a length of 8-12 mm, and finger-joint teeth 61 are 6 cm long. The finger-jointed and spliced ​​portions are glued together. The length of adjacent finger-joint teeth along the width is not less than 5 cm. Stress grooves are provided on the surfaces of two adjacent rubberwood strips 62 away from the finger-joint teeth 61. The stress grooves are located at a distance from the rubberwood strips 62. 2. The distance between the two ends along the length direction is less than 3cm, and the stress groove angle is 180°; the width of the stress groove is 0.5-0.6mm, the depth is 1.0-2.0mm, and the length is between the width of one rubberwood strip 62 and two rubberwood strips 62, with the spacing between two adjacent stress grooves not less than 0.2mm; the thickness of the coating layer 1 is 0.01-0.1mm, its bottom layer is a cured layer of wear-resistant primer, and the top layer is a cured layer of topcoat; the thickness of the printing layer 2 is 0.01-0.1mm; the primer layer 3 is an oil-based white base layer; the surface layer 4 is a 0.45-1.2mm thick hardwood veneer, with the grain direction consistent with the grain direction of the core layer 6 and the back panel 8; the first balancing layer 5 and the second balancing layer 7 are both 1-3mm thick waterproof high-density particleboard with a density of 0.9-1.2g / cm³. 2 .

[0030] Example 5

[0031] A digitally printed rubberwood finger-jointed core flooring includes a core layer 6. From top to bottom, the surface of the core layer 6 comprises a coating layer 1, a printing layer 2, a primer layer 3, a surface layer 4, and a first balancing layer 5. Below the back of the core layer 6 are a second balancing layer 7 and a backing board 8. All layers below the surface layer are bonded together with adhesive. The core layer 6 is made of rubberwood finger-jointed material, formed by finger-jointing rubberwood strips 62 along their length using finger-joint teeth 61, and splicing them along their width. The rubberwood strips 62 have a moisture content of 6-9%, a length of 8-12 mm, and finger-joint teeth 61 are 6 cm long. The finger-jointed and spliced ​​portions are glued together. The length of adjacent finger-joint teeth along the width is not less than 5 cm. Stress grooves are provided on the surfaces of two adjacent rubberwood strips 62 away from the finger-joint teeth 61. The stress grooves are located at a distance from the rubberwood strips 62. 2. The distance between the two ends along the length direction is less than 3cm, and the stress groove angle is 180°; the width of the stress groove is 0.5-0.6mm, the depth is 1.0-2.0mm, and the length is between the width of one rubberwood strip 62 and two rubberwood strips 62, with the spacing between two adjacent stress grooves not less than 0.2mm; the thickness of the coating layer 1 is 0.01-0.1mm, its bottom layer is a cured layer of wear-resistant primer, and the top layer is a cured layer of topcoat; the thickness of the printing layer 2 is 0.01-0.1mm; the primer layer 3 is an oil-based white base layer; the surface layer 4 is a 0.45-1.2mm thick hardwood veneer, with the grain direction consistent with the grain direction of the core layer 6 and the back panel 8; the first balancing layer 5 and the second balancing layer 7 are both 1-3mm thick waterproof high-density particleboard with a density of 0.9-1.2g / cm³. 2 The back panel 8 is made of softwood with a thickness of 1.2 to 1.5 mm, such as poplar, birch or pine, and the grain direction is consistent with the grain direction of the core layer.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the description of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A rubber wood finger joint core digital printing floor, comprising a core layer (6), a finishing layer (1), a printing layer (2), a primer layer (3), a surface layer (4), and a first balancing layer (5) are sequentially arranged on the surface of the core layer (6) from top to bottom; a second balancing layer (7) and a back plate (8) are sequentially arranged below the back surface of the core layer (6), characterized in that: The surface layer is integrated with the following layers by adhesive curing; the core layer (6) is rubber wood finger joint material, which is finger jointed by length direction finger joint tooth (61) of rubber wood strip (62), spliced in width direction, and provided with stress groove on surface of rubber wood strip (62) away from finger joint tooth (61), the width of stress groove is 0.5-0.6mm, the depth is 1.0-2.0mm, the length is between 1 rubber wood strip (62) and 2 rubber wood strips (62) in width, the distance between adjacent two stress grooves is not less than 0.2mm; the thickness of printing layer (2) is 0.01-0.1mm.

2. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The thickness of finishing layer (1) is 0.01-0.1mm, the bottom layer is cured layer of wear-resistant primer, and the surface layer is cured layer of finish.

3. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The primer layer (3) is oil-based white primer layer.

4. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The surface layer (4) is 0.45-1.2mm hard wood veneer, and the texture direction is consistent with that of core layer (6) and back plate (8).

5. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The first balancing layer (5) and the second balancing layer (7) are each a 1-3 mm waterproof high-density shaving board with a density of 0.9-1.2 g / cm 2 .

6. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The water content of rubber wood strip (62) is 6-9%, and the length is 8-12mm.

7. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The length of finger joint tooth (61) is 6cm, and the length of adjacent finger joint tooth in width direction is not less than 5cm.

8. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The distance between stress groove and two ends of rubber wood strip (62) in length direction is less than 3cm, and the angle of stress groove is 180°.

9. The rubber wood finger joint core digital printing floor according to claim 1, characterized in that: The back plate (8) is soft wood material with thickness of 1.2-1.5mm, and the texture direction is consistent with that of core layer (6).

10. The rubber wood finger joint core digital printing floor according to claim 9, characterized in that: The soft wood material is poplar, birch or pine.

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