Composite board and manufacturing method thereof

Abstract

The invention relates to the field of composite boards and manufacturing thereof, and discloses a composite board and a manufacturing method thereof.The composite board comprises at least one bamboo layer and at least one wood layer, and the number of the bamboo layers is larger than or equal to that of the wood layers; the bamboo wood layers and the wood layers are sequentially and alternately stacked. Wherein the bamboo wood layer is formed by bonding and splicing bamboo chip materials through thermosetting phenolic resin. According to the composite board, the multi-layer structural design that the bamboo wood and the wood are sequentially and alternately stacked is adopted, and the structural stability of the composite board is enhanced. By means of the design, the composite board can resist changes of environment humidity and temperature, and the possibility of warping and deformation is reduced. And meanwhile, the service life of the composite board is ensured by the moisture-proof, corrosion-resistant, firm and wear-resistant properties.

Description

Technical Field

[0001] The present application relates to the field of composite board materials and their manufacturing, and specifically to a composite board material and its manufacturing method. Background Art

[0002] Composite board is a new type of material that we often see and use in our lives. There are many types of composite boards, different types have different uses, and their raw materials will also change accordingly, such as: wood composite boards, bamboo composite boards, etc.

[0003] Wood composite board is an innovative material made of multiple layers of wood chips or wood fibers pressed by a specific adhesive. Wood composite board has the advantages of being beautiful, practical and stable, but the existing wood composite board is susceptible to moisture, mold, deformation, debonding and cracking.

[0004] Bamboo composite board uses bamboo as the main raw material, so it has the advantages of environmental protection, renewable, natural beauty, stable performance and corrosion resistance. However, the variety and color of bamboo composite board are relatively single, its durability is relatively weak, and the production process is complicated.

[0005] Therefore, there is an urgent need for a composite board with more stable and excellent performance. Summary of the invention

[0006] One purpose of the embodiments of the present application is to provide a composite board and a method for manufacturing the same, so as to solve the technical defects existing in the above-mentioned prior art.

[0007] In a first aspect, an embodiment of the present application provides a composite board, comprising: at least one bamboo layer and at least one wood layer, wherein the number of the bamboo layers is greater than or equal to the number of the wood layers; The bamboo material layers and the wood material layers are alternately stacked in sequence; Wherein, the bamboo material layer is formed by splicing bamboo pieces by bonding with thermosetting phenolic resin.

[0008] The composite board in the embodiment of the present application adopts a multi-layer structure design in which bamboo and wood are alternately stacked in sequence, which enhances the structural stability of the composite board. This design enables the composite board to resist changes in environmental humidity and temperature, and reduces the possibility of warping and deformation. At the same time, its moisture-proof, anti-corrosion, strong and wear-resistant properties also ensure the service life of the composite board. In addition, since the number of the bamboo material layers is greater than or equal to the number of the wood material layers, the outermost layer of the composite board is all bamboo material layers, which can not only protect the inner wood layer, but also make the composite board have a better appearance.

[0009] Optionally, the at least one bamboo layer includes a first bamboo layer and a second bamboo layer, and the at least one wood layer includes a wood layer; the first bamboo layer and the second bamboo layer are respectively arranged on both sides of the wood layer.

[0010] The composite board in the embodiment of the present application adopts a structural design of two layers of bamboo material sandwiching a layer of wood material, which can make the composite board have better structural stability and better toughness while having a smaller density.

[0011] Optionally, an angle formed by an arrangement direction of the bamboo pieces in the first bamboo material layer and an arrangement direction of the bamboo pieces in the second bamboo material layer is an acute angle.

[0012] It can be understood that the direction stated in the embodiments of the present application refers to the direction in which the wood fibers of the bamboo material or the wood material are located, and the arrangement direction of the bamboo material refers to the direction in which the wood fibers of the bamboo material are located.

[0013] In the embodiment of the present application, the bamboo strips in two adjacent bamboo material layers are arranged in an orthogonal direction, so that the composite board has better deformation resistance.

[0014] Optionally, the wood layer is composed of one or more types of light wood, wherein the light wood includes: fir, pine, poplar, and willow.

[0015] In the composite board in the embodiment of the present application, the wood layer can be composed of one or more lightweight woods such as fir, pine, poplar, willow, etc., which can make the composite board have a smaller density.

[0016] Optionally, the bamboo material layer is subjected to degreasing and / or desugaring treatment.

[0017] In the embodiment of the present application, the bamboo material layer is subjected to degreasing and / or desugaring treatment, which can significantly improve the anti-corrosion and anti-mildew properties of the bamboo material layer and extend its service life. The bamboo material after desugaring treatment has a higher density, and its compression resistance, waterproof, flame retardant, sun-proof, and wear-resistant properties are significantly improved.

[0018] Optionally, the wood layer is degreased.

[0019] In the embodiment of the present application, the wood layer is degreased, which can make the wood layer in the composite board have better durability and enhance the anti-corrosion performance of the wood layer; in addition, the surface of the wood after degreasing is smoother and more delicate, reducing the influence of oil and resin on the color of the wood, making the texture and color of the wood more natural and uniform, and effectively improving the appearance of the wood layer.

[0020] In a second aspect, the present invention provides a method for manufacturing a composite plate, comprising: Degreasing and / or desugaring the bamboo chip material; Degreasing the wood board material; The processed bamboo sheet material and the processed wood board material are spliced ​​and fixed to form a combined structure in which at least one bamboo layer and at least one wood layer are alternately stacked in sequence; The composite structure is hot-pressed by thermosetting phenolic resin to form a composite plate.

[0021] Optionally, the method further comprises: cutting the composite board; and performing secondary degreasing and / or desugaring treatment on the cut composite board.

[0022] Optionally, the wooden board material is composed of one or more of fir, pine, poplar, and willow.

[0023] Optionally, the splicing arrangement directions of the bamboo strip materials on both sides of the wood layer in the combined structure are orthogonal.

[0024] In the manufacturing process of the composite board in the embodiment of the present application, the wood and bamboo are subjected to degreasing and / or desugaring treatment, so that the wood layer and bamboo layer in the composite board have better durability and anti-corrosion performance. In addition, the wood layer and bamboo layer adopt a multi-layer structure design in which the wood layer and the bamboo layer are alternately stacked in sequence, which further enhances the structural stability of the composite board. This design enables the composite board to resist changes in environmental humidity and temperature and reduce the possibility of warping and deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0026] Figure 1 A schematic diagram of a composite plate structure provided in an embodiment of the present application; Figure 2 A schematic diagram of another composite plate structure provided in an embodiment of the present application; Figure 3 A schematic diagram of another composite plate structure provided in an embodiment of the present application; Figure 4 A schematic diagram of another composite plate structure provided in an embodiment of the present application; Figure 5 A schematic structural diagram of two combinations and arrangements of bamboo pieces in a bamboo material layer of a composite board provided in an embodiment of the present application; Figure 6 A schematic diagram of another composite plate structure provided in an embodiment of the present application; Figure 7 A schematic diagram of another composite plate structure provided in an embodiment of the present application; Figure 8 A schematic diagram of another composite plate structure provided in an embodiment of the present application; Fig. 9 A schematic diagram of another composite plate structure provided in an embodiment of the present application; Fig.10 A schematic diagram of a composite board production process provided in an embodiment of the present application; Fig.11 A schematic diagram of a composite board production process provided in an embodiment of the present application; Fig.12 A schematic flow chart of a composite board manufacturing method provided in an embodiment of the present application.

[0027] In the attached drawings, 1-bamboo material layer; 11-first bamboo material layer; 12-second bamboo material layer; 111-bamboo sheet material; 2-wood layer. DETAILED DESCRIPTION

[0028] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application embodiments, some technical features well known in the art are not described.

[0029] In the embodiments of the present application, ordinal numbers such as "first" and "second" cited in the present application are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0030] In the embodiments of the present application, "up", "down", "front", "back", "left", "right", etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0031] In the embodiments of the present application, “equal”, “same”, etc. are not strictly limited in the mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0032] Unless otherwise stated, the numerical ranges herein include not only the entire range within its two endpoints but also include several sub-ranges contained therein.

[0033] refer to Figure 1-Figure 4; The composite board material provided in the present application includes at least one bamboo layer 1 and at least one wood layer 2, the number of the bamboo layers 1 is greater than or equal to the number of the wood layers 2; the bamboo layers 1 and the wood layers 2 are alternately stacked in sequence; wherein the bamboo layer 1 is formed by splicing bamboo sheet materials 111 by bonding and splicing with thermosetting phenolic resin.

[0034] refer to Figure 1 The composite board in the embodiment of the present application can be formed by stacking a layer of bamboo layer 1 and a layer of wood layer 2, or by stacking two layers of bamboo layers 1 and a layer of wood layer 2 alternately in sequence, or by stacking three layers of bamboo layers 1 and two layers of wood layers 2 alternately in sequence; and the number of the bamboo layers is greater than or equal to the number of the wood layers.

[0035] The composite board in the embodiment of the present application adopts a multi-layer structure design in which bamboo and wood are alternately stacked in sequence, which enhances the structural stability of the composite board. This design enables the composite board to resist changes in environmental humidity and temperature, and reduces the possibility of warping and deformation. At the same time, its moisture-proof, anti-corrosion, strong and wear-resistant properties also ensure the service life of the composite board. After long-term use, the composite board can still maintain a good appearance and performance. In addition, since the number of the bamboo material layers is greater than or equal to the number of the wood material layers, the outermost layers of the composite board are all bamboo material layers, which can not only protect the inner wood layer, but also make the composite board have a better appearance.

[0036] refer to Figure 2 , is a schematic diagram of another composite board structure provided in an embodiment of the present application, wherein the composite board includes a first bamboo material layer 11 and a second bamboo material layer 12, wherein the first bamboo material layer 11 and the second bamboo material layer 12 are respectively arranged on both sides of the first wood layer 2, and the arrangement direction of the bamboo pieces in the first bamboo material layer 11 is consistent with the arrangement direction of the bamboo pieces in the second bamboo layer.

[0037] The composite board in the embodiment of the present application adopts a structural design of two layers of bamboo material sandwiching a layer of wood material, which can make the composite board have better structural stability and better toughness while having a smaller density.

[0038] refer to Figure 3 , is a schematic diagram of another composite board structure provided in an embodiment of the present application, wherein the composite board includes a first bamboo material layer 11 and a second bamboo material layer 12, wherein the first bamboo material layer 11 and the second bamboo material layer 12 are respectively arranged on both sides of the first wood layer 2, and the arrangement direction of the bamboo pieces in the first bamboo material layer 11 and the arrangement direction of the bamboo pieces in the second bamboo layer are orthogonal.

[0039] refer to Figure 4, is a schematic diagram of another composite board structure provided in an embodiment of the present application, wherein the composite board includes a first bamboo material layer 11 and a second bamboo material layer 12, wherein the first bamboo material layer 11 and the second bamboo material layer 12 are respectively arranged on both sides of the first wood layer 2, and an angle formed by an arrangement direction of the bamboo sheet materials in the first bamboo material layer 11 and an arrangement direction of the bamboo sheet materials in the second bamboo layer is an acute angle, and the arrangement direction of the bamboo sheet materials refers to the direction in which the wood fibers of the bamboo sheet materials are located.

[0040] In the embodiment of the present application, the bamboo strips in two adjacent bamboo material layers are arranged in an orthogonal direction, so that the composite board has better deformation resistance.

[0041] In an optional embodiment, the bamboo pieces in the bamboo material layer 1 of the composite board of the present application may include two combination arrangements. Figure 5 , one is: bamboo pieces are laid out in sequence (reference Figure 5 The other is a stacked arrangement of bamboo pieces (see Figure 5 Further, the bamboo material layer 1 may include multiple sub-layers stacked in sequence, each of which is made of Figure 5 As shown in the above picture, the bamboo strips are arranged in a flat pattern.

[0042] In an optional embodiment, the wood layer 2 of the composite board in the embodiment of the present application can be composed of one or more light woods. For example, it can be composed of one or more light woods such as fir, pine, poplar, willow, etc. The wood layer can be a whole piece of fir, or the wood layer can be formed by bonding multiple pieces of fir; it can also be a wood board formed by a combination of multiple woods of fir, pine, poplar or willow.

[0043] In the composite board in the embodiment of the present application, the wood layer can be composed of one or more lightweight woods such as fir, pine, poplar, willow, etc., which can make the composite board have a smaller density.

[0044] In an optional embodiment, the bamboo material layer 1 of the composite board of the present application is a bamboo material layer that has been subjected to a degreasing treatment; or, the bamboo material layer is a bamboo material layer that has been subjected to a degreasing and desugaring treatment.

[0045] In the embodiment of the present application, the bamboo material layer is subjected to degreasing and / or desugaring treatment, which can significantly improve the anti-corrosion and anti-mildew properties of the bamboo material layer and extend its service life. The bamboo material after desugaring treatment has a higher density, and its compression resistance, waterproof, flame retardant, sun-proof, and wear-resistant properties are significantly improved.

[0046] In an optional embodiment, the wood layer 2 of the composite board of the present application can be wood that has been degreased, or wood that has not been degreased.

[0047] In the embodiment of the present application, the wood layer is degreased, which can make the wood layer in the composite board have better durability and enhance the anti-corrosion performance of the wood layer; in addition, the surface of the wood after degreasing is smoother and more delicate, reducing the influence of oil and resin on the color of the wood, making the texture and color of the wood more natural and uniform, and effectively improving the appearance of the wood layer.

[0048] refer to Figure 6 , is another composite board provided by an embodiment of the present application, the composite board comprises two bamboo layers 1 and a wood layer 2, the bamboo layers 1 and the wood layers 2 are alternately stacked in sequence; the bamboo layer 1 is made of bamboo pieces bonded and spliced ​​by thermosetting phenolic resin. Wherein, the two bamboo layers 1 each comprise two sub-bamboo layers, the two sub-bamboo layers are stacked in sequence, the bamboo pieces in the two sub-bamboo layers are arranged in the same direction, and the bamboo pieces in the sub-bamboo layers are arranged in a flat manner.

[0049] The composite board in the embodiment of the present application adopts a multi-layer structure design in which bamboo and wood are alternately stacked in sequence, which enhances the structural stability of the composite board. This design enables the composite board to resist changes in environmental humidity and temperature, and reduces the possibility of warping and deformation. At the same time, its moisture-proof, anti-corrosion, strong and wear-resistant properties also ensure the service life of the composite board.

[0050] refer to Figure 7 , is another composite board provided by the embodiment of the present application, the composite board comprises two bamboo layers 1 and a wood layer 2, the bamboo layers 1 and the wood layers 2 are alternately stacked in sequence; the bamboo layer 1 is made of bamboo pieces bonded and spliced ​​by thermosetting phenolic resin. The two bamboo layers 1 each comprise two sub-bamboo layers, the two sub-bamboo layers are stacked in sequence, and the bamboo pieces in the two sub-bamboo layers are arranged orthogonally.

[0051] refer to Figure 8 , is another composite board provided by the embodiment of the present application, the composite board comprises two bamboo layers 1 and a wood layer 2, the bamboo layers 1 and the wood layers 2 are alternately stacked in sequence; the bamboo layer 1 is made of bamboo pieces bonded and spliced ​​by thermosetting phenolic resin. Wherein, the two bamboo layers 1 each comprise two sub-bamboo layers, the two sub-bamboo layers are stacked in sequence, the bamboo pieces in the two sub-bamboo layers are arranged in the same direction, the bamboo pieces in each sub-bamboo layer are arranged in a flat manner, and the bamboo pieces in the upper and lower sub-layers are arranged in a staggered manner.

[0052] refer to Fig. 9, is another composite board provided in the embodiment of the present application, wherein Fig. 9 The upper side figure is a top view of the composite plate. Fig. 9 The lower figure is a cross-sectional view of the composite board, which includes two bamboo layers 1 and a wood layer 2, wherein the bamboo layers 1 and the wood layers 2 are alternately stacked in sequence; the bamboo layer 1 is made of bamboo pieces bonded and spliced ​​by thermosetting phenolic resin. The adjacent bamboo pieces in the bamboo layer 1 are woven together to form the bamboo layer. It is understood that the angle formed between the adjacent bamboo pieces in the bamboo layer 1 can be as follows: Fig. 9 The angle shown in the figure is 90°, and it can also be an acute angle between 90° and 0°. The bamboo layer formed by this mutual weaving has better stability and is not easy to fall apart.

[0053] The composite board in the embodiment of the present application adopts a multi-layer structure design in which bamboo and wood are alternately stacked in sequence, which enhances the structural stability of the composite board. This design enables the composite board to resist changes in environmental humidity and temperature, and reduces the possibility of warping and deformation. At the same time, its moisture-proof, anti-corrosion, strong and wear-resistant properties also ensure the service life of the composite board. In addition, in the embodiment of the present application, the two layers of bamboo layers 1 each include two layers of sub-bamboo layers, and the two layers of sub-bamboo layers are stacked in sequence. The bamboo pieces in the two layers of sub-bamboo layers are arranged in the same direction, and the bamboo pieces in each layer of sub-bamboo layers are arranged in a flat manner, and the bamboo pieces in the upper and lower sub-layers are staggered; this can further increase the stability of the bamboo layer.

[0054] refer to Fig.12 , a method for manufacturing a composite plate provided in an embodiment of the present application, comprising: 101: Degreasing and / or desugaring the bamboo chip material.

[0055] In the embodiments of the present application, the bamboo chip material may be subjected to a degreasing treatment or a desugaring treatment; or the bamboo chip material may be subjected to both a degreasing treatment and a desugaring treatment.

[0056] In the embodiment of the present application, the degreasing treatment of the bamboo material mainly involves the use of high temperature and high pressure technology to remove the grease in the bamboo. Specifically, it includes two main steps: 1. High temperature and high pressure fumigation: In this step, water and steam act on the bamboo at the same time, and the degreasing process is enhanced by steaming. 2. High temperature and high pressure carbonization: During the carbonization process, the bamboo fiber is degreased for the second time, and the lipids in the bamboo fiber are removed to the maximum extent through multiple exhausts, while unifying the color of the bamboo fiber and matching the color.

[0057] In the embodiments of the present application, the desugaring treatment of the bamboo material mainly includes: 1. High temperature and high pressure treatment: The bamboo is placed in a high temperature and high pressure environment to remove sugar by steaming and drying. This method can effectively remove most of the sugar in the bamboo, but it requires a long processing time. 2. Biomass fermentation method: Using biomass fermentation technology, the sugar in the bamboo is removed by the action of microorganisms. 3. Carbonization treatment: The bamboo is treated by a high temperature carbonization furnace. Sugar and other impurities are removed during the carbonization process, so that the bamboo has better physical properties. 4. Hydrothermal treatment: By controlling the temperature and pressure, the bamboo is hydrothermally treated in water. This method can remove sugar while ensuring the mechanical properties of the bamboo.

[0058] 102: Degrease the wood board material.

[0059] In the embodiment of the present application, the degreasing treatment of the wood board material can be carried out by conventional methods such as alkaline solution saponification method, solvent extraction method or drying method.

[0060] 103: The processed bamboo sheet material and the processed wood board material are spliced ​​and fixed to form a combined structure of at least one bamboo layer and at least one wood layer, wherein the bamboo layer and the wood layer are alternately stacked in sequence. For details, please refer to Fig.10 , Fig.11 as well as Figure 2 .

[0061] 104: The combined structure is hot-pressed by a thermosetting phenolic resin to form a composite plate.

[0062] 105: cutting the composite board; and performing secondary degreasing and / or desugaring treatment on the cut composite board.

[0063] In an optional embodiment, the wood layer 2 of the composite board in the embodiment of the present application can be composed of one or more light woods such as fir, pine, poplar, willow, etc. For example, the wood layer can be a whole piece of fir, or the wood layer can be formed by bonding multiple pieces of fir; or it can be a wood board formed by a combination of multiple woods of fir, pine, poplar or willow.

[0064] In an optional embodiment, the splicing arrangement directions of the bamboo pieces on both sides of the wood layer in the combined structure described in the embodiment of the present application are orthogonal. Figure 2 or Figure 3 shown.

[0065] In the manufacturing process of the composite board in the embodiment of the present application, the wood and bamboo are subjected to degreasing and / or desugaring treatment, so that the wood layer and bamboo layer in the composite board have better durability and anti-corrosion performance. In addition, the wood layer and bamboo layer adopt a multi-layer structure design in which the wood layer and the bamboo layer are alternately stacked in sequence, which further enhances the structural stability of the composite board. This design enables the composite board to resist changes in environmental humidity and temperature and reduce the possibility of warping and deformation.

[0066] Unless otherwise defined, the technical and scientific terms used in this application have the same meaning as those generally understood by those skilled in the art in the technical field of this application. The terms used herein are only for describing specific implementation purposes and are not intended to limit this application. Terms such as "setting" appearing in this article can mean that a component is directly attached to another component, or that a component is attached to another component through an intermediate. Features described in this article in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise specified.

[0067] The present application has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the present application to the described embodiments. It can be understood by those skilled in the art that more variations and modifications can be made according to the teachings of the present application, and these variations and modifications all fall within the scope of protection claimed in the present application.

Claims

1. A composite sheet, characterized in that: include: at least one bamboo layer and at least one wood layer, wherein the number of the bamboo layers is greater than or equal to the number of the wood layers; The bamboo material layers and the wood material layers are alternately stacked in sequence; Wherein, the bamboo material layer is formed by splicing bamboo pieces by bonding with thermosetting phenolic resin.

2. The composite sheet material according to claim 1, characterized in that: The at least one bamboo material layer comprises a first bamboo material layer and a second bamboo material layer, and the at least one wood material layer comprises a wood material layer; The first bamboo material layer and the second bamboo material layer are respectively arranged on both sides of the first wood layer.

3. The composite sheet material according to claim 2, characterized in that: The angle formed by the arrangement direction of the bamboo pieces in the first bamboo material layer and the arrangement direction of the bamboo pieces in the second bamboo material layer is an acute angle, and the arrangement direction of the bamboo pieces refers to the direction in which the wood fibers of the bamboo pieces are located.

4. The composite sheet material according to claim 1, characterized in that: The wood layer is composed of one or more types of light wood.

5. The composite sheet material according to claim 1, characterized in that: The bamboo material layer is subjected to degreasing and / or desugaring treatment.

6. The composite sheet material according to claim 1 or 5, characterized in that: The wood layer is degreased.

7. A method for manufacturing a composite plate, characterized in that: The method comprises: Degreasing and / or desugaring the bamboo chip material; Degreasing the wood board material; The processed bamboo sheet material and the processed wood board material are spliced ​​and fixed to form a combined structure in which at least one bamboo layer and at least one wood layer are alternately stacked in sequence; The composite structure is hot-pressed by thermosetting phenolic resin to form a composite plate.

8. The method for manufacturing a composite plate according to claim 7, characterized in that: The method further comprises: Cutting the composite sheet; The cut composite board is subjected to secondary degreasing and / or desugaring treatment.

9. The method for manufacturing a composite plate according to claim 7, characterized in that: The wood board material consists of one or more types of light wood.

10. The method for manufacturing a composite plate according to claim 7, characterized in that: The splicing arrangement directions of the bamboo pieces on both sides of the wood layer in the combined structure are orthogonal.

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