Moisture-proof, deformation-resistant and flame-retardant composite artificial board

Abstract

The utility model belongs to the technical field of artificial boards, and particularly discloses a damp-proof, deformation-resistant and flame-retardant composite artificial board. According to the composite artificial board, the Thai board base material serves as a panel to be attached to the wood board, the deformation resistance and flame retardance of the wood board are improved, and the composite artificial board has the moisture-proof performance; and due to the good facing effect, the composite artificial board is free from further facing treatment, and the board processing technology is simplified. The composite artificial board is further provided with a back board symmetrical to the Thai board base material face board so as to balance deformation stress generated when the Thai board base material serving as the face board is attached to the wood board. The backboard can be made of various products such as different paperboards so as to meet different requirements, and the application scene of the composite artificial board is enriched. The composite artificial board overcomes the defect that a conventional inorganic board in the prior art cannot give consideration to the problems of deformation and flammability, has proper density, and guarantees the safety when being applied to a hanging scene.

Description

Technical Field

[0001] This utility model belongs to the field of engineered wood products technology, specifically, it relates to a composite engineered wood product that combines moisture resistance, deformation resistance and flame retardancy. Background Technology

[0002] Warping and flammability are two major pain points for wood-based panels. There are generally two methods to reduce wood warping: one is to add straighteners to the wood panel, mainly used in cabinet doors and door panels; the other is to incorporate rigid inorganic boards into the wood panel to reduce warping. There are three main methods to achieve flame retardancy in wood-based panels: one is to treat the wood with flame retardants and then glue it together to form the panel; another is to use flame-retardant adhesives to bond the wood; and the third is to laminate inorganic boards such as gypsum board or magnesium oxide board onto the surface or inside the wood panel to achieve flame retardancy.

[0003] Currently, there are numerous studies on the prevention of deformation and flame retardancy of wood-based panels. For example, Chinese patent CN 218084554U discloses a moisture-proof and deformation-resistant composite board for furniture, including a water-proof board whose upper surface is connected to the lower surface of a moisture-absorbing board, and a composite board core installed on the upper surface of the moisture-absorbing board. It also includes a reinforcing board whose lower end is connected to the upper end of a reinforcing board; a fixed connecting plate whose lower end is installed on the upper end of the reinforcing board; and a shock-absorbing plate fitted onto the upper end of the reinforcing board. This moisture-proof and deformation-resistant composite board for furniture achieves overall water and moisture protection through the water-proof and moisture-absorbing boards, effectively preventing the composite board from becoming damp and affecting its service life. The fixed connecting plate and fixing springs allow for locking and fixing between the reinforcing board and the deformation-resistant board. Furthermore, the decorative board can be disassembled by rotating the mounting screws, facilitating replacement according to the user's preferences.

[0004] For example, Chinese patent CN 221997350U discloses a flame-retardant and sound-insulating plywood, comprising a core layer, a face layer, a bottom layer, and a frame. The core layer includes, from top to bottom, a flame-retardant layer one, a plywood layer one, a sound-insulating layer, a plywood layer two, and a flame-retardant layer two. The sound-insulating layer comprises a perforated gypsum board layer, a sound-absorbing rock wool layer, and a honeycomb porous ceramic plate layer bonded together. A flame-retardant layer three is embedded in the frame, and a heat-insulating coating is provided on the outer surface of the frame. The flame-retardant effect of the frame and the flame-retardant layer in the core layer are improved by the heat-insulating coating and the flame-retardant layer, thereby improving the overall flame-retardant performance. The sound-insulating effect is improved by the sound-insulating layer composed of the perforated gypsum board layer, the sound-absorbing rock wool layer, and the honeycomb porous ceramic plate layer.

[0005] However, current solutions cannot simultaneously address both deformation resistance and flame retardancy, or other application issues remain. This is because inorganic boards used to address flame retardancy (such as gypsum board and magnesium oxide board) are often hygroscopic, easily causing the underlying wood to warp due to moisture. While inorganic rigid boards used to improve deformation (such as calcium silicate board) can address both deformation resistance and flame retardancy, they suffer from brittleness and poor impact resistance. Furthermore, the production process of calcium silicate board involves high energy consumption during steam curing. Additionally, current inorganic boards often exhibit poor nail-holding power and poor adhesive properties (generally requiring bonding with wood using adhesives), hindering their practical application.

[0006] In summary, providing a composite engineered wood panel that combines multiple properties such as deformation resistance, moisture resistance, and flame retardancy remains an urgent problem to be solved. Utility Model Content

[0007] To address the problems of high brittleness and poor impact resistance in existing inorganic rigid boards for deformation resistance, the moisture absorption problem in inorganic boards for flame retardancy, and the poor nail-holding power and adhesiveness of both, the inventors of this utility model, based on long-term research on engineered wood products, have proposed a novel composite engineered wood product that combines deformation resistance, moisture resistance, and flame retardancy. This product effectively solves the problems of the variability and flammability of wood-based core boards, providing different composite engineered wood products for various applications.

[0008] The present invention specifically adopts the following technical solution:

[0009] A moisture-proof, deformation-resistant, and flame-retardant composite engineered wood panel, comprising:

[0010] Core board;

[0011] A panel is disposed on one surface of the core board;

[0012] A back plate is disposed on the other surface of the core board, and the back plate and the front plate are located on opposite sides of the core board;

[0013] Adhesive layer; disposed between the core board and the face panel, and between the core board and the back panel;

[0014] The core board is made of wood, and the face board is made of Taiyan board substrate.

[0015] Taiyan board substrate is a commercially available product of Qiannianzhou New Material Technology Group Co., Ltd. It can be further laminated to produce Taiyan board wall panels (generally, a decorative paper is applied to one side of the substrate) or Taiyan board flooring (generally, a decorative paper and a wear-resistant paper are applied sequentially to one side of the substrate, and a balancing paper is applied to the other side). It is an inorganic wood composite board prepared based on the formation principle of "petrified wood." Inorganic adhesives are filled into the interior and gaps of wood fibers, and it is formed through self-crystallization and curing under high pressure, resulting in high density (1200 kg / m³). 3 ~1450kg / m 3 It features a smooth surface, high breaking load (up to 760N), formaldehyde-free flame retardancy, mildew and moisture resistance, etc.

[0016] The back panel is located on the opposite side of the core board from the front panel. It mainly serves as a balancing layer to balance the deformation stress generated by the rigid front panel on the relatively flexible core board, so as to avoid deformation caused by the unbalanced structure pulling on the wood board that serves as the core board.

[0017] Optionally, the thickness of the panel is 1mm to 5mm, preferably 1mm to 3mm.

[0018] Optionally, the thickness of the core board is 5 to 30 times that of the panel. This thickness helps to reduce cracking of the core board caused by deformation after the panel is attached to it, and also helps to improve the overall board's resistance to deformation.

[0019] Optionally, the core board can be any one of particleboard, blockboard, plywood, or fiberboard.

[0020] Furthermore, the particleboard can be either conventional particleboard or oriented strand board (OSB).

[0021] Optionally, the thickness of the adhesive layer is 0.05 mm to 0.5 mm.

[0022] Alternatively, the adhesive layer is an adhesive layer formed by conventional cold pressing process using cold-pressed adhesive as the adhesive.

[0023] Optionally, the cold-pressed adhesive layer is any one of two-component polyurethane adhesive, magnesium oxychloride cement, magnesium oxysulfide cement, or a mixture of at least two.

[0024] Optionally, the back panel is a separate engineered wood panel, a separate balancing paper, or engineered wood panels and balancing paper stacked sequentially on the core panel, with the aim of providing equivalent deformation stress to the panel and thus balancing the deformation stress applied by the panel.

[0025] The aforementioned engineered wood panels can be materials made from bamboo and wood fibers and adhesives, such as Taiyan board substrate, fiberboard, and particleboard.

[0026] Furthermore, the backing board is any one of Taiyan board substrate, balancing paper, high-density fiberboard, or any one of particleboard or low-density fiberboard laminated with balancing paper, and the particleboard or low-density fiberboard is adjacent to the core board.

[0027] The above-mentioned high-density fiberboard refers to a density greater than 900 kg / m³. 3 Fiberboard, low-density fiberboard refers to fiberboard with a density of 600 kg / m³. 3 ~900kg / m 3 (excluding) fiberboard.

[0028] Furthermore, when the backing is made of Taiyan board substrate, the thickness of the backing is the same as that of the Taiyan board substrate of the face panel; when the backing is made of balance paper, the basis weight is 140g to 180g; when the backing is made of high-density fiberboard, the thickness is 1.2 to 1.5 times the thickness of the face panel.

[0029] Furthermore, when the backing board is any one of particleboard or low-density fiberboard and is laminated with balancing paper, the thickness of the particleboard or low-density fiberboard is 1 to 1.5 times the thickness of the face board, and the weight of the balancing paper is 90g to 120g.

[0030] This utility model has the following beneficial effects:

[0031] 1) This composite engineered wood panel uses Taiyan board as the panel layer, which enhances the deformation resistance of the wood panel underneath by utilizing its high density and flatness.

[0032] 2) This composite engineered wood panel uses Taiyan board as the panel layer, which makes the wood board underneath less flammable due to its flame retardancy; in addition, the mildew and moisture-proof properties of the Taiyan board improve the deformation problem caused by moisture absorption of the wood board underneath.

[0033] 3) The back panel of this composite engineered wood panel not only serves as a balancing layer, but can also be adjusted according to different performance requirements and scenarios, thus fully expanding the application scenarios of this composite engineered wood panel.

[0034] 4) This composite engineered wood panel does not require changes to the existing engineered wood panel production process during processing and is not limited by the choice of core board. It can be laminated on the surface of various engineered wood panels such as particleboard, plywood, and blockboard without affecting the bonding strength of the engineered wood panel, and does not corrode metal parts such as keel. It also gives conventional engineered wood panels characteristics such as flame retardancy, moisture resistance, and deformation resistance. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of the composite artificial board according to the present invention;

[0036] Figure 2 This is a structural diagram of Taiyan slab flooring;

[0037] Figure 3 This is a structural schematic diagram of a composite artificial board according to an embodiment of the present utility model;

[0038] Figure 4 This is a structural schematic diagram of a composite artificial board according to an embodiment of the present utility model;

[0039] Figure 5 This is a structural schematic diagram of a composite artificial board according to an embodiment of the present utility model;

[0040] Figure 6 This is a structural schematic diagram of a composite artificial board according to an embodiment of the present utility model;

[0041] Figure 7 This is a structural schematic diagram of a composite artificial board according to an embodiment of the present utility model;

[0042] Labeling Explanation: 1-Core board; 2-Face board; 3-Back board; 4-Adhesive layer; 31-Taiyan board substrate; 32-Particleboard; 33-Low grammage balance paper; 34-High density fiberboard; 35-Low density fiberboard; 36-High grammage balance paper; 41-First adhesive layer; 42-Second adhesive layer. Detailed Implementation

[0043] To enable those skilled in the art to better understand the solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0044] In the description of this utility model, it should be understood that the terms "thickness," "upper," "lower," etc., indicate the orientation or state relationship based on the orientation or state relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0045] Furthermore, in addition to indicating location or state relationships, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0046] In the description of this utility model, it should be understood that the terms "high" and "low" are not used to indicate orientation or positional relationships such as length or height, but rather to indicate the magnitude of performance; and both are relative concepts and are not limited by specific values.

[0047] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0048] See Figure 1 The present invention provides a composite engineered wood panel, which includes a core board 1, a face panel 2 and a back panel 3 located on opposite sides of the core board 1; wherein the core board 1 and the face panel 2, as well as the core board 1 and the back panel 3, are bonded together by an adhesive layer 4.

[0049] For ease of description, the first adhesive layer 41 will be used to refer to the adhesive layer between the core board 1 and the face panel 2, and the second adhesive layer 42 will be used to refer to the adhesive layer between the core board 1 and the back panel 3.

[0050] The core board 1 can be any type of conventional engineered wood board, such as particleboard (which can be regular particleboard or oriented strand board), blockboard, plywood, or fiberboard.

[0051] Panel 2 is a commercially available board material developed by Qiannianzhou New Material Technology Group Co., Ltd., with the product name Taiyan Board Substrate.

[0052] Thai rock slab substrate is based on the principle of petrified wood, where inorganic adhesives are filled into the interior and interstices of wood fibers, and then self-crystallized and cured under high pressure. Generally, Thai rock slab substrate can also be veneered to create derivative products such as Thai rock slab wall panels or Thai rock slab flooring. Thai rock slab wall panels are obtained by applying decorative paper (also called patterned paper or textured paper) to one side of the Thai rock slab substrate; while Thai rock slab flooring is obtained by applying decorative paper and wear-resistant paper sequentially to one side of the Thai rock slab substrate, and balancing paper to the other side, such as... Figure 2 As shown. In Figure 2 In this context, the substrate is the aforementioned Taiyan board substrate.

[0053] Firstly, the Taiyan slab substrate is characterized by high density and flatness, with a density of 1200 kg / m³. 3 ~1450kg / m 3The high density of the Taiyan board substrate, on the one hand, exhibits rigidity, allowing it to adhere to the relatively flexible core board 1 to mitigate deformation issues; on the other hand, its high density also provides mildew and moisture resistance, ensuring that the core board 1 beneath it is protected against deformation caused by moisture absorption. Furthermore, the flatness of the Taiyan board substrate allows it to function as a decorative layer. Secondly, as a type of engineered wood product formed with inorganic adhesives, the Taiyan board substrate is flame-retardant, and when adhered to the flammable core board 1, it solves the flammability problem of wood-based panels.

[0054] The thickness of panel 2 is generally controlled to be 1mm to 5mm; preferably 1mm to 3mm. This is to prevent the use of thicker Taiyan board substrates, which would lead to higher costs. Secondly, it controls the thickness of the core board to avoid using excessively thick core board 1. Thirdly, it avoids imposing higher thickness requirements on the back board 3, which serves as a balancing layer, ultimately resulting in an excessively thick composite artificial board.

[0055] The core board 1 is typically made of conventional engineered wood, with a thickness 5 to 30 times that of the face panel 2, depending on the specific application requirements. This thickness control helps reduce the tensile stress on the core board 1 after the Taiyan board substrate used as the face panel 2 is laminated, thus preventing cracking of the wood board.

[0056] In other words, depending on the application scenario and considering the thickness of the Taiyan board substrate, the maximum thickness of the artificial wood board can be 150mm, and the minimum thickness can be 5mm. The above-mentioned structure in this utility model is improved to transform it into a composite artificial board with moisture-proof, deformation-resistant and flame-retardant properties.

[0057] The back plate 3 is attached to the opposite side of the core board 1, opposite to the face plate 2, thus forming a relatively symmetrical structure with the core board 1 as the central structural layer. The back plate 3 mainly functions as a balancing layer. The setting of this balancing layer helps to balance the deformation stress generated by the rigid face plate 2 on the relatively flexible core board 1, so as to prevent the deformation stress from further deforming the core board 1.

[0058] The first adhesive layer 41 and the second adhesive layer 42 are preferably formed by conventional cold pressing adhesive and cold pressing process.

[0059] Using cold-pressed adhesive as the material for the first adhesive layer 41 and the second adhesive layer 42 can ensure that the panel 2, the core board 1 and the back board 3 are tightly bonded in sequence, while also avoiding the problem of board deformation caused by insufficient stress release during the hot pressing process.

[0060] Generally, cold-pressed adhesives can be any one of two-component polyurethane adhesives, magnesium oxychloride cement, magnesium oxysulfide cement, or a mixture of at least two.

[0061] Generally, an appropriate amount of cold-pressing adhesive is applied between the panel 2 and the core board 1, and between the core board 1 and the back panel 3, respectively. Then, the unit pressure is controlled at 0.5MPa to 1.5MPa, and cold-pressed for 6 hours to 24 hours to form the product.

[0062] The “appropriate amount” of the cold-pressed adhesive refers to the amount used corresponding to the first adhesive layer 41 and the second adhesive layer 42, both with a thickness of 0.05mm to 0.5mm, after the above-mentioned cold-pressing process.

[0063] After cold pressing, the material generally needs to be cured under the conditions of use for 3 to 5 days to allow the moisture inside the board to balance.

[0064] The selection and dosage of cold-pressing adhesive, the cold-pressing process, and the specific control of curing conditions after cold-pressing are all routine operating procedures in composite engineered wood products, and they do not fundamentally affect the performance of the final composite engineered wood product.

[0065] Further integration Figure 3 In some embodiments, the back panel is specifically a Taiyan board substrate 31, and its thickness can be controlled to be the same as that of the front panel 1.

[0066] Further integration Figure 4 In some embodiments, the backing plate is specifically a particleboard 32 and a low-grammage balancing paper 33 stacked sequentially on the core board 1; wherein, the thickness of the particleboard 32 is 1 to 1.5 times the thickness of the panel 2, and the grammage of the low-grammage balancing paper 33 is 90g to 120g. The composite structure of the two can ensure that the stress is comparable to that of the panel 2, thus achieving a balancing effect.

[0067] Further integration Figure 5 In some embodiments, the back panel is specifically a high-density fiberboard 34, the thickness of which is controlled to be 1.2 to 1.5 times the thickness of the panel 2, so that the stress is comparable to that of the panel 2 and a balancing effect is achieved.

[0068] Further integration Figure 6 In some embodiments, the backing plate is specifically a low-density fiberboard 35 and a low-grammage balancing paper 33 stacked sequentially on the core board 1; wherein, the thickness of the low-density fiberboard 35 is 1 to 1.5 times the thickness of the panel 2, and the grammage of the low-grammage balancing paper 33 is 90g to 120g. The composite structure of the two can ensure that the stress is comparable to that of the panel 2, thereby achieving a balancing effect.

[0069] Generally, when a backing is formed by laminating low-density fiberboard 35 or particleboard 32 with low-grammage balance paper 33, the performance of the two is not significantly different.

[0070] The aforementioned high-density fiberboard 34 refers to boards with a density greater than 900 kg / m³. 3 Fiberboard, specifically low-density fiberboard 35, refers to fiberboard with a density of 600 kg / m³.3 ~900kg / m 3 (excluding) fiberboard.

[0071] Further integration Figure 7 In some embodiments, the backing plate is specifically a high-grammage balancing paper 36, with its grammage controlled at 140g to 180g, which can ensure that the stress is comparable to that of the panel 2 and achieve a balancing effect.

[0072] It should be noted that, in the above Figure 4 , Figure 6 In the embodiment with a laminated back panel shown, no adhesive layer is required between the two structural layers of the back panel. The low-grammage balance paper 33 can be directly attached to the particleboard 32 or low-density fiberboard 35 through a cold pressing process.

[0073] The above Figure 3 The composite engineered wood panels shown are generally used as the base material for decorative panels or as door core panels. The aforementioned... Figures 4-7 The composite engineered wood panels shown are generally used as flooring substrates, wall panel substrates, or cabinet back panels.

[0074] The following will describe each composite engineered wood panel with reference to specific embodiments and measure its overall performance.

[0075] Example 1

[0076] The composite engineered wood panel provided in this embodiment has the following characteristics: Figure 3 The structure shown.

[0077] Specifically, panel 2 is a 3mm thick Taiyan board substrate, core board 1 is a 18mm thick conventional particleboard, and back panel 31 is a 3mm thick Taiyan board substrate; the cold-pressing adhesive is magnesium oxychloride cement.

[0078] The Taiyan slab substrate 31, core board 1, and face panel 2 are stacked sequentially, and magnesium oxychloride cement is applied between adjacent boards. The substrate is then cold-pressed for 18 hours at a controlled unit pressure of 0.5 MPa. A second adhesive layer 42 is formed between the Taiyan slab substrate 31 and core board 1, and a first adhesive layer 41 is formed between the core board 1 and face panel 2. The thickness of both the first adhesive layer 41 and the second adhesive layer 42 is approximately 0.3 mm.

[0079] After cold pressing, different sheets from the same batch are separated by spacers and cured for 5 days to obtain the final product.

[0080] Example 2

[0081] The composite engineered wood panel provided in this embodiment has the following characteristics: Figure 4 The structure shown.

[0082] Specifically, panel 2 is a 1mm thick Taiyan board substrate, core board 1 is a 15mm thick plywood, and back board is a 2mm thick particleboard 32 and a 100g low-grammage balance paper 33 stacked on core board 1; the cold pressing adhesive is a two-component polyurethane adhesive.

[0083] Low-grammage balance paper 33, particleboard 32, core board 1, and face panel 2 are sequentially stacked, and a two-component polyurethane adhesive is applied between adjacent boards. The mixture is then cold-pressed for 6 hours at a controlled unit pressure of 1.0 MPa. A second adhesive layer 42 is formed between particleboard 32 and core board 1, and a first adhesive layer 41 is formed between core board 1 and face panel 2. The thickness of both the first adhesive layer 41 and the second adhesive layer 42 is approximately 0.05 mm.

[0084] After cold pressing, different sheets from the same batch are separated by spacers and cured for 5 days to obtain the final product.

[0085] Example 3

[0086] The composite engineered wood panel provided in this embodiment has the following characteristics: Figure 5 The structure shown.

[0087] Specifically, panel 2 is a 5mm thick Taiyan board substrate, core board 1 is a 60mm thick conventional particleboard, and back panel is a 7mm thick high-density fiberboard 34 (density 930kg / m³). 3 ); Sulfate magnesium cement is selected for cold-pressed adhesive.

[0088] High-density fiberboard 34, core board 1, and face panel 2 are stacked sequentially, and magnesium oxysulfate cement is applied between adjacent boards. The layers are then cold-pressed for 12 hours under a controlled unit pressure of 1.5 MPa. A second adhesive layer 42 is formed between the high-density fiberboard 34 and the core board 1, and a first adhesive layer 41 is formed between the core board 1 and the face panel 2. The thickness of both the first adhesive layer 41 and the second adhesive layer 42 is approximately 0.5 mm.

[0089] Example 4

[0090] The composite engineered wood panel provided in this embodiment has the following characteristics: Figure 7 The structure shown.

[0091] Specifically, panel 2 is a 2mm thick Taiyan board substrate, core board 1 is an 18mm thick oriented strand board, and back panel is a 160g high-grammage balance paper 36; the cold-press adhesive is a two-component polyurethane adhesive.

[0092] High-grammage balance paper 36, core board 1, and face panel 2 are stacked sequentially, and polyurethane adhesive is applied between adjacent boards. The mixture is then cold-pressed for 15 hours at a controlled unit pressure of 2 MPa. A second adhesive layer 42 is formed between the high-grammage balance paper 36 and the core board 1, and a first adhesive layer 41 is formed between the core board 1 and the face panel 2. The thickness of both the first adhesive layer 41 and the second adhesive layer 42 is approximately 0.06 mm.

[0093] The performance of each composite engineered wood panel provided in Examples 1 to 4 was tested, and the results are shown in Table 1 below.

[0094] The combustion performance was tested according to GB 8624-2012 "Classification of Combustion Performance of Building Materials and Products"; the moisture resistance performance, including the 24-hour water absorption thickness expansion rate and mechanical properties, was tested according to the corresponding national standards for wood-based panels.

[0095] Table 1 Performance testing of the composite wood panels provided in Examples 1 to 4

[0096]

[0097]

[0098] As can be seen from the performance data in Table 1, the composite artificial board based on Taiyan board substrate provided by this utility model has flame retardant performance that meets the fire resistance performance requirements (B1C level) of flame-retardant building materials. It can be used as a base plate for decorative panels or door core panels (Example 1), or as a floor substrate, wall panel substrate or cabinet back panel (Examples 2 to 4). Furthermore, its deformation resistance and moisture resistance are both excellent, and it has excellent mechanical properties.

[0099] In the description of this specification, the reference to the term "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A moisture-proof, deformation-resistant, and flame-retardant composite wood-based panel, characterized in that, include: Core board; A panel is disposed on one side surface of the core board; A back plate is disposed on the other side surface of the core plate, and the back plate and the front panel are located on opposite sides of the front panel; An adhesive layer is disposed between the core board and the front panel, and between the core board and the back panel; The core board is a wood board, and the face panel is a Taiyan board substrate.

2. The composite wood product of claim 1, wherein, The thickness of the panel is 1mm to 5mm.

3. The composite wood product of claim 2, wherein, The thickness of the core board is 5 to 30 times the thickness of the panel.

4. The composite wood product of claim 1, wherein The adhesive layer is an adhesive layer formed by cold pressing with cold-pressed adhesive as the adhesive.

5. The composite wood product of claim 4, wherein, The thickness of the adhesive layer is 0.05mm to 0.5mm.

6. The composite wood-based panel according to any one of claims 1 to 5, characterized in that The back panel is a composite structure of engineered wood, balancing paper, or both.

7. The composite wood product of claim 6, wherein, The backboard is selected from any one of the following: Taiyan board substrate, high grammage balance paper, high density fiber board; wherein the high grammage balance paper has a grammage of 140g to 180g, and the high density fiber board is a fiber board with a density greater than 900kg / m 3 .

8. The composite wood product of claim 7, wherein, When the back panel is made of Taiyan board substrate, the thickness of the Taiyan board substrate of the back panel is the same as the thickness of the front panel; the thickness of the high-density fiberboard is 1.2 to 1.5 times the thickness of the front panel.

9. The composite wood product of claim 6, wherein, The backboard comprises a shaving board and a low-gram-weight balancing paper, or a low-density fiber board and a low-gram-weight balancing paper, which are sequentially stacked on the core board; wherein the gram weight of the low-gram-weight balancing paper is 90g-120g, and the low-density fiber board is a fiber board with a density of not less than 600kg / m 3 and less than 900kg / m 3 .

10. The composite wood product of claim 9, wherein, The thickness of both the particleboard and the low-density fiberboard is 1 to 1.5 times the thickness of the panel.

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