Plywood with high tear resistance

Abstract

The utility model aims to provide a plywood with high tear resistance, which comprises a timber adhesive layer, two laminates, two interlayers and two outer plates, a reinforcing net is arranged in the timber adhesive layer, the two laminates are respectively arranged on two opposite side surfaces of the timber adhesive layer, and the two outer plates are arranged on the two laminates. The two interlayers are arranged on the side faces, away from the wood glue layer, of the two laminates respectively, a clamping net is arranged in each interlayer, and the two outer plates are arranged on the side faces, away from the laminates, of the two interlayers respectively. Therefore, the wood glue layer, the laminated plate, the interlayer, the outer plate, the reinforcing net and the sandwich net form a multi-layer net reinforcing structure, the crack tearing tendency of the whole plywood is effectively restrained, and therefore the tearing resistance of the whole plywood is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of engineered wood products, and in particular to a plywood with high tear resistance. Background Technology

[0002] Plywood, a common type of engineered wood product, is widely used in construction formwork, furniture manufacturing, and packaging due to its low cost and good processing performance. Traditional plywood is typically made by laminating veneers with wood (such as wood core, wood chips, or shavings) using adhesives. Its structure depends on the mechanical properties of the wood itself and the strength of the interlayer bonding. To enhance the structural strength of plywood, multiple layers of veneers and wood are layered alternately.

[0003] However, this structure, which simply increases the number of veneer and wood layers, makes the plywood too thick and heavy, which will increase the load on the supporting joists during construction and decoration. Therefore, in order to effectively improve its tear resistance without increasing the thickness, the high tear resistance plywood of this application is proposed. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a high tear-resistant plywood that can effectively reduce the number of layers while improving tear resistance.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A high tear-resistant plywood, comprising:

[0007] Wood adhesive layer, wherein a reinforcing mesh is provided inside the wood adhesive layer;

[0008] Two shelves are respectively disposed on opposite sides of the wood adhesive layer;

[0009] Two interlayers are provided on the side of the two layers away from the wood glue layer, and a mesh is provided in each interlayer;

[0010] Two outer panels are respectively disposed on the side of the two interlayers away from the layer.

[0011] Optionally, the reinforcing mesh includes a plurality of first filament bundles and a plurality of second filament bundles, wherein each first filament bundle and each second filament bundle are interwoven sequentially to form the reinforcing mesh.

[0012] Optionally, the angle between the first filament bundle and the second filament bundle is α, and 0° < α < 90°.

[0013] Optionally, the angle α between the first filament bundle and the second filament bundle is 60°.

[0014] Optionally, both the first filament bundle and the second filament bundle are carbon fiber or glass fiber.

[0015] Optionally, the interlayer is an adhesive layer.

[0016] Optionally, the mesh includes a plurality of first bamboo fiber bundles and a plurality of second bamboo fiber bundles, wherein each first bamboo fiber bundle and each second bamboo fiber bundle are interwoven in sequence to form the mesh.

[0017] Optionally, the angle between the first bamboo fiber bundle and the second bamboo fiber bundle is 90°.

[0018] Optionally, the thickness of the layer is the same as the thickness of the outer plate.

[0019] Compared with the prior art, the present invention has at least the following advantages:

[0020] This invention relates to a high-tear-resistance plywood, comprising a wood glue layer, two plywoods, two interlayers, and two outer panels. A reinforcing mesh is disposed within the wood glue layer. The two plywoods are respectively disposed on opposite sides of the wood glue layer. The two interlayers are respectively disposed on the sides of the two plywoods furthest from the wood glue layer. Each interlayer contains a mesh. The two outer panels are respectively disposed on the sides of the two interlayers furthest from the plywoods. Thus, the wood glue layer, plywoods, interlayers, outer panels, reinforcing mesh, and interlayer mesh form a multi-layered reinforced structure, effectively suppressing the overall cracking and tearing tendency of the plywood, thereby effectively improving the overall tear resistance of the plywood. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a high tear-resistant plywood according to one embodiment of the present invention;

[0023] Figure 2 for Figure 1 A partial enlarged structural diagram of A;

[0024] Figure 3 This is a partial structural schematic diagram of the reinforcing mesh according to one embodiment of the present invention;

[0025] Figure 4 This is a partial structural diagram of the mesh according to one embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. High tear-resistant plywood; 100. Wood glue layer; 200. Plywood; 300. Interlayer; 400. Outer panel; 500. Reinforcing mesh; 600. Interlayer mesh; 510. First fiber bundle; 520. Second fiber bundle; 610. First bamboo fiber bundle; 620. Second bamboo fiber bundle. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0029] like Figure 1 and Figure 2 As shown, a high tear-resistant plywood 10 includes a wood glue layer 100, two plywoods 200, two interlayers 300, and two outer panels 400. A reinforcing mesh 500 is provided inside the wood glue layer 100. The two plywoods 200 are respectively disposed on opposite sides of the wood glue layer 100. The two interlayers 300 are respectively disposed on the side of the two plywoods 200 away from the wood glue layer 100. A mesh 600 is provided inside each interlayer 300. The two outer panels 400 are respectively disposed on the side of the two interlayers 300 away from the plywoods 200.

[0030] It should be noted that a reinforcing mesh 500 is embedded within the wood adhesive layer 100 to form a three-dimensional mesh support core structure. When external loads induce tearing stress, the reinforcing mesh 500 disperses the concentrated stress to multiple directions within the wood adhesive layer 100 through its mesh nodes, inhibiting the propagation of cracks in one direction and effectively dispersing stress. The wood adhesive layer 100 is a layered structure formed by laminating wood chips with adhesive. To ensure the reinforcing mesh 500 is well embedded within the wood adhesive layer 100, it can be manufactured using the following process: wood chips are filled onto both sides of the reinforcing mesh 500, then adhesive is injected, and two layers 200 are laminated onto the wood chips. After the adhesive cures, a solid wood adhesive layer 100 is formed, with the reinforcing mesh 500 located within it. It should be noted that any adhesive with viscous properties from the prior art can be used; its material is not within the scope of protection of this application and will not be elaborated upon here. Furthermore, the outer panel 400 is bonded to the outer surface of the plywood 200 via the interlayer 300. For example, both the plywood 200 and the outer panel 400 are high-density veneers or thin wood veneers, and the interlayer 300 is a layered structure formed after the polyurethane filler has been cured, wherein a mesh 600 is embedded within the interlayer 300. In this way, the wood adhesive layer 100, plywood 200, interlayer 300, outer panel 400, reinforcing mesh 500, and mesh 600 form a multi-layer mesh reinforcement structure, effectively suppressing the overall cracking and tearing tendency of the plywood, thus effectively improving the overall tear resistance of the plywood.

[0031] like Figure 3 As shown, in one embodiment, the reinforcing mesh 500 includes a plurality of first filament bundles 510 and a plurality of second filament bundles 520, and each first filament bundle 510 and each second filament bundle 520 are interwoven in sequence to form the reinforcing mesh 500.

[0032] It should be noted that each of the first filament bundles 510 and each of the second filament bundles 520 are interwoven in sequence to form a reinforcing mesh 500, which makes the entire reinforcing mesh 500 have sufficient toughness.

[0033] Furthermore, such as Figure 3 As shown, in one embodiment, the included angle between the first filament bundle 510 and the second filament bundle 520 is α, and 0° < α < 90°.

[0034] It should be noted that the included angle between the first filament bundle 510 and the second filament bundle 520 is an acute angle. This gives the woven reinforcing mesh 500 a certain degree of toughness in all directions, thereby enabling the subsequently pressed high-tear-resistant plywood 10 to have high tear resistance. In one embodiment, the included angle α between the first filament bundle 510 and the second filament bundle 520 is 60°.

[0035] Furthermore, in one embodiment, both the first filament bundle 510 and the second filament bundle 520 are carbon fiber or glass fiber. Specifically, the carbon fiber or glass fiber bundled into a linear shape is formed into the first filament bundle 510 / second filament bundle 520, and then the first filament bundle 510 and the second filament bundle 520 are woven together to form a reinforcing mesh 500.

[0036] In one embodiment, the interlayer 300 is an adhesive layer. Specifically, in the production of high tear-resistant plywood 10, the mesh 600 is first laid on the outer surface of the plywood 200, then adhesive is applied, and finally the outer board 400 is laminated onto the outer surface of the plywood 200 so that the outer board 400 and the plywood 200 together press the mesh 600 together. The adhesive applied to the mesh 600 solidifies to form an adhesive layer. Therefore, the thickness of the interlayer 300 is not the same as the thickness of the wood adhesive layer 100. The wood adhesive layer 100 is a layered structure of a mixture of wood and adhesive, and its thickness can be any value depending on the amount of wood mixed in. The thickness of the interlayer 300 is usually the same as the thickness of the mesh 600. The function of the interlayer 300 is to firmly bond the plywood 200, the mesh 600, and the outer board 400 together.

[0037] like Figure 4 As shown, in one embodiment, the mesh 600 includes a plurality of first bamboo fiber bundles 610 and a plurality of second bamboo fiber bundles 620, and each first bamboo fiber bundle 610 and each second bamboo fiber bundle 620 are interwoven in sequence to form the mesh 600.

[0038] It should be noted that the mesh 600 is woven from a first bamboo fiber bundle 610 and a second bamboo fiber bundle 620, interlaced sequentially. For example, the angle between the first bamboo fiber bundle 610 and the second bamboo fiber bundle 620 is 90°, making the structure of the mesh 600 different from that of the reinforcing mesh 500. This results in the high tear-resistant plywood 10 of the overall structure possessing high tear resistance in all directions. Furthermore, the mesh 600 is made of bamboo fiber. After lamination with adhesive, the bamboo fiber is effectively protected from corrosion. Bamboo fiber is an environmentally friendly material that can naturally degrade when broken. Thus, the mesh 600 combines the advantages of tear resistance and environmental friendliness.

[0039] In one embodiment, the thickness of the veneer 200 is the same as the thickness of the outer panel 400. For example, both the veneer 200 and the outer panel 400 are veneers or wood chips sliced ​​from wood, with a thickness of 1 mm to 4 mm. Thus, the high tear-resistant plywood 10 of this application, under the combined action of the reinforcing mesh 500, the interlayer mesh 600, the veneer 200, the outer panel 400, and the wood adhesive layer 100, possesses high tear resistance.

[0040] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood to include, but is not limited to, locking and fixing with screws / bolts, and welding. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A high tear-resistant plywood, characterized in that, include: Wood adhesive layer, wherein a reinforcing mesh is provided inside the wood adhesive layer; Two shelves are respectively disposed on opposite sides of the wood adhesive layer; Two interlayers are provided on the side of the two layers away from the wood glue layer, and a mesh is provided in each interlayer; Two outer panels are respectively disposed on the side of the two interlayers away from the layer.

2. The high tear-resistant plywood according to claim 1, characterized in that, The reinforcing mesh includes a plurality of first filament bundles and a plurality of second filament bundles, wherein each first filament bundle and each second filament bundle are interwoven sequentially to form the reinforcing mesh.

3. The high tear-resistant plywood according to claim 2, characterized in that, The angle between the first filament bundle and the second filament bundle is α, and 0° < α < 90°.

4. The high tear-resistant plywood according to claim 3, characterized in that, The angle α between the first filament bundle and the second filament bundle is 60°.

5. The high tear-resistant plywood according to any one of claims 2 to 4, characterized in that, Both the first and second filament bundles are made of carbon fiber or glass fiber.

6. The high tear-resistant plywood according to claim 1, characterized in that, The interlayer is an adhesive layer.

7. The high tear-resistant plywood according to claim 1 or 6, characterized in that, The mesh includes a plurality of first bamboo fiber bundles and a plurality of second bamboo fiber bundles, and each of the first bamboo fiber bundles and each of the second bamboo fiber bundles are interwoven in sequence to form the mesh.

8. The high tear-resistant plywood according to claim 7, characterized in that, The angle between the first bamboo fiber bundle and the second bamboo fiber bundle is 90°.

9. The high tear-resistant plywood according to claim 1, characterized in that, The thickness of the layer is the same as the thickness of the outer plate.

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