A pure aspen shaving board

Abstract

The utility model discloses a kind of pure poplar shaving boards, including board body, the board body is sequentially distributed from top to bottom by upper surface layer, core layer and lower surface layer and is made by pressing together. The utility model, by setting the directional structure of upper and lower surface layer longitudinal arrangement, core layer transverse arrangement, and combining the pure poplar fiber non-woven fabric reinforcing layer arranged between layers, effectively reorganizes wooden texture, significantly enhances the internal bond strength and overall dimensional stability of board, so that it has excellent anti-delamination, anti-deformation ability, and gives the super strong nail holding force of board central and edge far more than ordinary board, by setting large area waterproof layer and side waterproof layer on the upper and lower large surface and four side walls of board respectively, a complete three-dimensional moisture-proof system is built, the water intrusion path from all directions is completely blocked, thereby greatly improving the moisture-proof performance of board, prolonging its service life in humid environment.

Description

Technical Field

[0001] This utility model relates to the field of board technology, and in particular to a pure poplar wood particleboard. Background Technology

[0002] In the current engineered wood products market, oriented strand board (OSB) has become an important substrate in furniture manufacturing and interior decoration due to its higher mechanical strength and dimensional stability compared to ordinary particleboard. With the market's increasing demands for environmental protection and performance, pure poplar OSB, made from a single tree species (poplar), has emerged. It aims to improve product consistency and environmental reliability through material purification, representing an important development direction for this type of product.

[0003] However, existing pure poplar oriented strand board (OSB) still exhibits some significant drawbacks in practical applications. Firstly, its interlayer bonding strength remains insufficient, making it prone to delamination and warping in humid environments or under heavy loads. Secondly, the moisture-proofing system of the board is often inadequate, allowing moisture to easily penetrate from the unsealed sides, causing the board to swell and deform, thus affecting its lifespan. Furthermore, existing products do not adequately consider improving nail-holding power and overall resistance to deformation in their structural design, limiting their application in high-end furniture and load-bearing structures.

[0004] Therefore, it is necessary to improve and optimize its structure in order to solve the aforementioned existing problems. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a pure poplar particleboard.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pure poplar particleboard, comprising a board body, wherein the board body is formed by pressing together an upper surface layer, a core layer, and a lower surface layer in sequence from top to bottom; a first reinforcing layer is pressed between the upper surface layer and the core layer, and a second reinforcing layer is pressed between the core layer and the lower surface layer; a large-area waterproof layer is provided on the opposite outer surfaces of the upper and lower surface layers, and a side waterproof layer is provided on each of the four side walls of the board body; the upper surface layer, the lower surface layer, and the core layer are all formed by directional laying and pressing of pure poplar shavings, wherein the length direction of the shavings in the upper and lower surface layers is parallel to the length direction of the board body, and the length direction of the shavings in the core layer is perpendicular to the length direction of the board body.

[0007] As a further description of the above technical solution:

[0008] The particle density of the upper and lower surface layers is more than 15% greater than that of the core layer.

[0009] As a further description of the above technical solution:

[0010] Both the first reinforcing layer and the second reinforcing layer are pure poplar fiber nonwoven fabric layers.

[0011] As a further description of the above technical solution:

[0012] The large-area waterproof layer is a water-based polyurethane waterproof coating.

[0013] As a further description of the above technical solution:

[0014] The side waterproof layer is a thermosetting resin sealant layer.

[0015] As a further description of the above technical solution:

[0016] The overall thickness of the plate body is 16mm to 25mm.

[0017] As a further description of the above technical solution:

[0018] The basis weight of the first and second reinforcing layers is 30 g / m² to 80 g / m².

[0019] This utility model has the following beneficial effects:

[0020] 1. Compared with existing technologies, this pure poplar particleboard, by setting an oriented structure with the upper and lower surface layers arranged longitudinally and the core layer arranged transversely, and combined with a pure poplar fiber non-woven fabric reinforcement layer set between the layers, effectively reorganizes the wood texture, significantly enhances the internal bonding strength and overall dimensional stability of the board, gives it excellent anti-delamination and anti-deformation capabilities, and endows the center and edges of the board with a super strong nail-holding force far exceeding that of ordinary boards.

[0021] 2. Compared with existing technologies, this pure poplar particleboard has a complete three-dimensional moisture-proof system by setting large-area waterproof layers and side waterproof layers on the top and bottom surfaces and four side walls of the board. This completely blocks the intrusion path of moisture from all directions, thereby greatly improving the moisture-proof performance of the board and extending its service life in humid environments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a pure poplar particleboard proposed in this utility model.

[0023] Figure 2 This utility model proposes a pure poplar particleboard. Figure 1 A magnified view of a section at point A in the middle;

[0024] Figure 3 This is a partial structural cross-sectional view of the upper surface layer, the main waterproof layer, and the side waterproof layer of a pure poplar particleboard proposed in this utility model.

[0025] Legend:

[0026] 1. Top layer; 2. Bottom layer; 3. Core layer; 4. First reinforcing layer; 5. Second reinforcing layer; 6. Main waterproof layer; 7. Side waterproof layer. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1 to 3 This utility model provides a pure poplar particleboard, comprising a board body, the specific structure and implementation method of which are as follows:

[0029] To achieve directional reinforcement and stress balance within the board's internal structure and prevent delamination and deformation, the board body is composed of an upper surface layer 1, a core layer 3, and a lower surface layer 2, sequentially pressed together from top to bottom. In the upper surface layer 1 and lower surface layer 2, the pure poplar wood shavings are arranged parallel to the length direction of the board body, while in the core layer 3, the pure poplar wood shavings are arranged perpendicular to the length direction of the board body. This crisscrossing directional structure restructures the wood grain, effectively counteracting expansion and contraction in different directions when the board is subjected to external stress or changes in environmental temperature and humidity, thus giving the board excellent dimensional stability and overall uniformity.

[0030] To further enhance the interlayer bonding strength and deformation resistance of the board, and to prevent delamination in humid environments or under load, a first reinforcing layer 4 is pressed between the upper surface layer 1 and the core layer 3, and a second reinforcing layer 5 is pressed between the core layer 3 and the lower surface layer 2. Both the first reinforcing layer 4 and the second reinforcing layer 5 are pure poplar fiber nonwoven fabric layers. Through the above structure, the nonwoven fiber network forms a high-strength flexible connection interface between the layers, which can uniformly transfer and disperse stress, significantly enhancing the internal bonding strength of the board and giving it exceptional structural integrity.

[0031] To optimize the mechanical properties of the board and achieve efficient material utilization, the particle density of the upper surface layer 1 and the lower surface layer 2 is set to be more than 15% higher than that of the core layer 3. This density gradient structure makes the board surface harder and denser, resulting in stronger surface impact resistance and nail-holding power. Simultaneously, the core layer maintains a relatively low density, achieving material savings and weight optimization while ensuring structural strength.

[0032] To construct a comprehensive moisture barrier for the board and address the issue of expansion and deformation caused by moisture intrusion from the main surface and sides, a large-area waterproof layer 6, which is a water-based polyurethane waterproof coating, is provided on the opposite outer surfaces of both the upper surface layer 1 and the lower surface layer 2. Simultaneously, side waterproof layers 7, which are thermosetting resin sealant layers, are provided on all four side walls of the board body. This combined sealing structure of the main surface and sides forms a complete three-dimensional waterproof system. When the board is in a humid environment, it effectively blocks moisture penetration from any direction, thereby significantly improving the board's moisture resistance and service life.

[0033] To ensure the optimal balance between the function of the reinforcing layers and the feasibility of the process, the basis weight of the first reinforcing layer 4 and the second reinforcing layer 5 is limited to between 30 g / m² and 80 g / m². By using pure poplar fiber nonwoven fabric layers within this basis weight range, effective interlayer reinforcement can be achieved without excessively increasing the thickness of the board or affecting the hot-pressing process.

[0034] To meet the thickness requirements of mainstream furniture and decoration applications, the overall thickness of the board body is set between 16mm and 25mm. This standardized thickness design allows the board to be directly applied to cabinets, countertops, and various interior decoration substrates, demonstrating excellent versatility.

[0035] The working principle of this invention is based on its unique layered composite structure and materials science principles. The board uses longitudinally oriented planks in the upper and lower surface layers 1 and transversely oriented planks in the core layer 3 to form a stable, interwoven framework, eliminating internal stress in the wood from its structural origin and laying the foundation for high strength and stability. The first reinforcing layer 4 and the second reinforcing layer 5, as pure poplar fiber nonwoven fabric layers, play a crucial bridging and stress homogenization role between layers, firmly binding them into a whole and effectively resisting delamination and deformation. Simultaneously, the large-area waterproof layer 6 covering all outer surfaces of the board and the side waterproof layers 7 work together to form a comprehensive moisture-proof sealing system, fundamentally blocking the intrusion path of moisture. Finally, the high-density design of the surface layer combined with the reasonable density of the core layer allows the board to achieve a hard surface to enhance nail-holding power while maintaining overall lightweight and economic efficiency. Through the synergistic effect of the above structures, this invention ultimately achieves a pure poplar oriented strand board that combines high strength, high stability, excellent moisture resistance, and superior processing performance.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pure poplar particleboard, comprising a board body, characterized in that: The board body is formed by pressing together an upper surface layer (1), a core layer (3) and a lower surface layer (2) from top to bottom; a first reinforcing layer (4) is pressed between the upper surface layer (1) and the core layer (3), and a second reinforcing layer (5) is pressed between the core layer (3) and the lower surface layer (2); a large-area waterproof layer (6) is provided on the outer surfaces of the upper surface layer (1) and the lower surface layer (2) facing away from each other, and a side waterproof layer (7) is provided on the four side walls of the board body; the upper surface layer (1), the lower surface layer (2) and the core layer (3) are all formed by directional laying and pressing of pure poplar wood shavings, wherein the length direction of the shavings in the upper surface layer (1) and the lower surface layer (2) is parallel to the length direction of the board body, and the length direction of the shavings in the core layer (3) is perpendicular to the length direction of the board body.

2. The pure poplar particleboard according to claim 1, characterized in that: The particle density of the upper surface layer (1) and the lower surface layer (2) is more than 15% greater than that of the core layer (3).

3. The pure poplar particleboard according to claim 1, characterized in that: The first reinforcing layer (4) and the second reinforcing layer (5) are both pure poplar fiber nonwoven fabric layers.

4. The pure poplar particleboard according to claim 1, characterized in that: The large-area waterproof layer (6) is a water-based polyurethane waterproof coating.

5. The pure poplar particleboard according to claim 1, characterized in that: The side waterproof layer (7) is a thermosetting resin sealant layer.

6. The pure poplar particleboard according to claim 1, characterized in that: The overall thickness of the plate body is 16mm to 25mm.

7. The pure poplar particleboard according to claim 1, characterized in that: The basis weight of the first reinforcing layer (4) and the second reinforcing layer (5) is 30 g / m² to 80 g / m².

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