Plywood with high pressure bearing capacity

Abstract

The utility model relates to a plywood with high pressure bearing capacity, which comprises a top facing layer, a bottom facing layer and a plurality of cementing layers, and further comprises 2N groups of outer plywood layers and 2N-1 groups of inner plywood layers, the top facing layer and the bottom facing layer are respectively positioned on the uppermost layer and the lowermost layer of the plywood, the 2N-1 sets of inner clamping plate layers and the 2N sets of outer clamping plate layers are arranged between the top facing layer and the bottom facing layer in a staggered distribution mode, the top facing layer and the bottom facing layer are bonded and fixed to the adjacent outer clamping plate layers through cementing layers, and the outer clamping plate layers and the adjacent inner clamping plate layers are bonded and fixed through cementing layers. The top facing layer, the bottom facing layer, the 2N sets of outer clamping plate layers and the 2N-1 sets of inner clamping plate layers jointly form the plywood. According to the plywood, the gluing layer and the inner plywood layer are arranged in a matched mode, so that the plywood can have high stability and static bending intensity through criss-cross pavement between inner layer structures of the plywood, the impact resistance and the bending resistance of the plywood can be improved, and the service life of the plywood for bearing loads is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of plywood, and in particular to a plywood with high load-bearing capacity. Background Technology

[0002] Plywood, commonly known as multi-layer board, is a common material in furniture making and is a type of engineered wood product. Plywood is typically made by rotary cutting logs into veneers or slicing timber into thin sheets, then gluing them together with adhesives to form three or more layers of sheet material.

[0003] Traditional plywood generally has a simple structure and low strength. In actual use, especially when plywood is used in specific load-bearing environments, it is prone to breakage when subjected to excessive external forces, which affects its service life and poses safety hazards during use. Utility Model Content

[0004] In order to improve the problems mentioned in the background art, this application provides a plywood with strong pressure resistance.

[0005] The plywood with high load-bearing capacity provided in this application adopts the following technical solution:

[0006] A high-pressure-bearing plywood, in addition to a top facing layer, a bottom facing layer, and several layers of adhesive, also includes 2N sets of outer plywood layers and 2N-1 sets of inner plywood layers. The top and bottom facing layers are located at the top and bottom of the plywood, respectively. The 2N-1 sets of inner plywood layers and the 2N sets of outer plywood layers are alternately distributed between the top and bottom facing layers. The top and bottom facing layers are bonded and fixed to adjacent outer plywood layers, as well as to adjacent inner plywood layers, using adhesive layers to ensure that the outer edges of the top and bottom facing layers, the 2N sets of outer plywood layers, and the 2N-1 sets of inner plywood layers are aligned to form the plywood. Each outer or inner plywood layer includes multiple short wooden strips. Short wooden strips in the same row are bonded together to form long wooden strips, and adjacent long wooden strips are bonded and fixed together using adhesive, thereby assembling a set of outer or inner plywood layers.

[0007] Furthermore, the long wooden strips that make up the outer plywood layer are arranged in a transverse array, and the long wooden strips that make up the inner plywood layer are arranged in a longitudinal array; or, the long wooden strips that make up the outer plywood layer are arranged in a longitudinal array, and the long wooden strips that make up the inner plywood layer are arranged in a transverse array.

[0008] Furthermore, the multiple short wooden strips constituting the long wooden strip are respectively configured as a central strip and two end strips, with the two end strips symmetrically arranged at both ends of the central strip. The two end strips are interlocked with the adjacent sides of the central strip and fixed together using adhesive. The central strip has a flat bottom positioning surface and a flat top positioning surface at its center. Positioning bosses are formed at both ends of the central strip, and positioning grooves are formed between the top positioning surface and the positioning bosses. Additionally, the end strips have a flat bottom mating surface aligned with the bottom positioning surface and a flat top mating surface aligned with the top positioning surface. The end of the end strip near the central strip has a snap-fit ​​boss that interlocks with the positioning groove, and a snap-fit ​​groove is formed between the snap-fit ​​boss and the bottom mating surface that interlocks with the positioning boss. The end of the end strip facing away from the central strip is configured as a vertical plane.

[0009] Furthermore, the top finishing layer is configured as a cork pad layer formed by pressing cork granules, and the thickness of the top finishing layer is set to 0.5-3cm.

[0010] Furthermore, the outer plywood layer is made of flat pine wood, and the adhesive layer is made of an adhesive layer formed by the coagulation of MDI colloid.

[0011] The beneficial technical effects of this application are as follows: by combining the adhesive layer and the inner plywood layer, the plywood can utilize the crisscrossing arrangement between its inner structure to achieve high stability and static bending strength, thereby improving the plywood's impact and bending resistance and extending its service life under load. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of a plywood with high load-bearing capacity according to an embodiment of this application;

[0013] Figure 2 This is a schematic diagram of the structure of the inner or outer sandwich layer in the embodiments of this application;

[0014] Figure 3 This is a schematic diagram of the structure of the central slat in an embodiment of this application;

[0015] Figure 4 This is a schematic diagram of the end strip structure in an embodiment of this application.

[0016] Reference numerals: 10, top finish layer; 20, bottom finish layer; 30, outer plywood layer; 40, adhesive layer; 50, inner plywood layer; 60, center slat; 61, bottom positioning surface; 62, positioning boss; 63, positioning groove; 64, top positioning surface; 70, end slat; 71, bottom mating surface; 72, snap-fit ​​boss; 73, snap-fit ​​groove; 74, top mating surface. Detailed Implementation

[0017] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] This application discloses a plywood with high load-bearing capacity. (Refer to...) Figure 1 The high-pressure-bearing plywood includes a top facing layer 10, a bottom facing layer 20, 2N groups of outer plywood layers 30, several layers of adhesive layers 40, and 2N-1 groups of inner plywood layers 50. During processing, the top facing layer 10 and the bottom facing layer 20 can be positioned as the top and bottom layers of the plywood, respectively. The 2N-1 groups of inner plywood layers 50 and the 2N groups of outer plywood layers 30 are alternately distributed between the top facing layer 10 and the bottom facing layer 20. The top facing layer 10 and the bottom facing layer 20 can be bonded and fixed to adjacent outer plywood layers 30, and the outer plywood layers 30 can be bonded to adjacent inner plywood layers 50 using adhesive layers 40. This allows the top facing layer 10, the bottom facing layer 20, the 2N groups of outer plywood layers 30, and the 2N-1 groups of inner plywood layers 50 to be bonded together with their outer edges aligned to form the plywood.

[0019] In this embodiment, the thickness of the top finishing layer 10 is set to 0.5-3cm, and the top finishing layer 10 can be made from cork pads that have been pressed and formed using existing technology, and cut to the appropriate size. This makes the top finishing layer 10 soft and elastic, and has good anti-slip and noise reduction capabilities.

[0020] In this embodiment, the outer plywood layer 30 can be made of flat pine wood. Pine wood is a high-quality wood with medium density, uniform structure, average shrinkage efficiency, and strong stability.

[0021] In this embodiment, the adhesive layer 40 can be made of MDI diphenylmethane diisocyanate eco-colloid, which is formaldehyde-free, a common and relatively safe adhesive, and can form an adhesive layer after it solidifies.

[0022] In this embodiment, when the multiple long wooden strips constituting the outer plywood layer 30 are arranged in a transverse array, the multiple long wooden strips constituting the inner plywood layer 50 need to be arranged in a longitudinal array; or, when the multiple long wooden strips constituting the outer plywood layer 30 are arranged in a longitudinal array, the multiple long wooden strips constituting the inner plywood layer 50 need to be arranged in a transverse array. This allows the outer plywood layer 30 and adjacent inner plywood layers 50 to be laid in a staggered pattern.

[0023] See Figures 2 to 4 The multiple short wooden strips that make up the long wooden strip are respectively set as a central strip 60 and two end strips 70. The two end strips 70 are symmetrically arranged at both ends of the central strip 60, and the two end strips 70 can be interlocked with the adjacent sides of the central strip 60 and can be fixed by adhesive.

[0024] In this embodiment, the bottom of the central slat 60 forms a flat bottom positioning surface 61, and the bottom of the end slat 70 forms a flat bottom mating surface 71 aligned with the bottom positioning surface 61. A flat top positioning surface 64 is formed at the center of the top of the central slat 60, and a flat top mating surface 74 aligned with the top positioning surface 64 is formed at the top of the end slat 70. Positioning bosses 62 are formed at both ends of the central slat 60, and positioning grooves 63 are formed between the top positioning surface 64 and the positioning bosses 62. A fastening boss 72, which engages with the positioning groove 63, is formed at the end of the end slat 70 closest to the central slat 60. A fastening groove 73, which engages with the positioning boss 62, is formed between the fastening boss 72 and the bottom mating surface 71, thereby allowing the end slat 70 and the central slat 60 to be positioned and inserted. The end of the end slat 70 facing away from the central slat 60 is set as a vertical plane so that it can be aligned with the outer edges of other layers.

[0025] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A type of plywood with high load-bearing capacity, comprising a top facing layer (10), a bottom facing layer (20), and a plurality of adhesive layers (40), characterized in that, It also includes 2N groups of outer plywood layers (30) and 2N-1 groups of inner plywood layers (50). The top finishing layer (10) and the bottom finishing layer (20) are located at the top and bottom layers of the plywood, respectively. The 2N-1 groups of inner plywood layers (50) and the 2N groups of outer plywood layers (30) are staggered between the top finishing layer (10) and the bottom finishing layer (20). The top finishing layer (10) and the bottom finishing layer (20) are bonded and fixed with the adjacent outer plywood layers (30), and the outer plywood layers (30) are bonded and fixed with the adjacent inner plywood layers (50) using adhesive layers (40). The outer edges of the top finishing layer (10), the bottom finishing layer (20), the 2N groups of outer plywood layers (30), and the 2N-1 groups of inner plywood layers (50) are aligned to form a plywood. The outer plywood layer (30) or the inner plywood layer (50) includes multiple short wooden strips. The short wooden strips in the same column are glued together to form long wooden strips, and adjacent long wooden strips are glued and fixed together with adhesive to form a set of outer plywood layers (30) or inner plywood layers (50).

2. The plywood with high load-bearing capacity according to claim 1, characterized in that, The long wooden strips that make up the outer plywood layer (30) are arranged in a transverse array, and the long wooden strips that make up the inner plywood layer (50) are arranged in a longitudinal array.

3. The plywood with high load-bearing capacity according to claim 1, characterized in that, The long wooden strips that make up the outer plywood layer (30) are arranged in a longitudinal array, and the long wooden strips that make up the inner plywood layer (50) are arranged in a transverse array.

4. A plywood with high load-bearing capacity according to claim 2 or 3, characterized in that, The multiple short wooden strips that make up the long wooden strip are respectively set as a central strip (60) and two end strips (70), and the two end strips (70) are symmetrically arranged at both ends of the central strip (60). The two end strips (70) are interlocked with the adjacent sides of the central strip (60) and fixed by adhesive.

5. The plywood with high load-bearing capacity according to claim 4, characterized in that, The bottom of the central strip (60) forms a flat bottom positioning surface (61), the top center of the central strip (60) forms a flat top positioning surface (64), both ends of the central strip (60) are formed with positioning bosses (62), and a positioning groove (63) is formed between the top positioning surface (64) and the positioning bosses (62).

6. The plywood with high load-bearing capacity according to claim 5, characterized in that, The end strip (70) has a flat bottom mating surface (71) aligned with the bottom positioning surface (61) at the bottom, and a flat top mating surface (74) aligned with the top positioning surface (64) at the top. The end of the end strip (70) near the center strip (60) has a fastening boss (72) that is connected to the positioning groove (63). A fastening groove (73) that is connected to the positioning boss (62) is formed between the fastening boss (72) and the bottom mating surface (71). The end of the end strip (70) facing away from the center strip (60) is set as a vertical plane.

7. The plywood with high load-bearing capacity according to claim 1, characterized in that, The top finishing layer (10) is a cork pad layer formed by pressing cork pellets, and the thickness of the top finishing layer (10) is set to 0.5-3cm.

8. The plywood with high load-bearing capacity according to claim 1, characterized in that, The outer plywood layer (30) is a flat pine board, and the adhesive layer (40) is an adhesive layer formed by MDI colloid coagulation.

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