Bamboo composite board
By designing bamboo composite panels made entirely of bamboo, the carbon sequestration problem and excessive strength caused by the wood content in bamboo-wood composite panels are solved, achieving the effects of low density, high strength, low cost, and enhanced aesthetics.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI ZHUSHANG BAMBOO IND CO LTD
- Filing Date
- 2025-05-13
- Publication Date
- 2026-06-12
Smart Images
Figure CN224347997U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of artificial composite panels, specifically to a bamboo composite panel. Background Technology
[0002] Currently, countries worldwide are striving to achieve sustainable economic development through the utilization of renewable biological resources, while simultaneously making every effort to reduce greenhouse gas emissions to meet climate goals. my country possesses approximately 20% of the world's bamboo forest area, making it the country with the richest bamboo resources globally. Bamboo plants have a strong carbon storage capacity, and promoting engineered bamboo products will further unlock bamboo's enormous potential in carbon sequestration and emission reduction. Bamboo plants are rapid-growing, renewable, and have a wide range of uses, thus perfectly aligning with the needs of green development.
[0003] The automotive manufacturing industry requires vehicle floor panels to be high-strength, lightweight, impact-resistant, wear-resistant, aesthetically pleasing, and cost-effective. Bamboo possesses excellent physical and mechanical properties, including high strength, good toughness, and wear resistance, making it an ideal material to replace wood, plastics, and thin steel sheets in the manufacture of automotive floor panels. Currently, bamboo-wood composite panels or reconstituted bamboo panels are common materials for vehicle floor panels. However, these composite panels still contain wood. Since wood is less carbon-efficient, environmentally friendly, and sustainable than bamboo, it poses a carbon sequestration problem, making wood-containing panels unfavorable for export. Furthermore, the density of traditional reconstituted bamboo is 1.1-1.3 g / cm³. 3 This results in an overemphasis on the strength of the materials used for the carriage floor, increasing the cost of use. Summary of the Invention
[0004] In view of the shortcomings of the prior art, the present invention provides a bamboo composite board to solve the problems of existing bamboo-wood composite boards or reconstituted bamboo boards used in the carriage floor that contain wood, have excessive strength, and are costly.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A bamboo composite board includes a core layer and a first rigid layer and a second rigid layer connected to two opposite end faces of the core layer. The first rigid layer, the second rigid layer, and the core layer are bonded together by hot pressing, and the density is not greater than 0.75 g / cm³. 3 ;
[0007] The core layer is made of multiple layers of woven bamboo curtain panels;
[0008] The first hard layer and the second hard layer are formed by uniformly spreading bamboo powder or bamboo particles and then curing them with adhesive.
[0009] Preferably, in this technical solution, the core layer is made of multiple layers of woven bamboo curtain panels laid in a crisscross pattern. The core layer is longitudinal in length and includes longitudinal bamboo curtain panels and transverse bamboo curtain panels. The number of layers of longitudinal bamboo curtain panels is 2 to 10 times the number of layers of transverse bamboo curtain panels, and each layer of transverse bamboo curtain panels is located in the middle of two layers of longitudinal bamboo curtain panels.
[0010] Preferably, in this technical solution, the thickness of the longitudinal bamboo curtain panel and the transverse bamboo curtain panel is 1-10mm.
[0011] Preferably, in this technical solution, the first hard layer and the second hard layer are uniformly coated with aluminum oxide powder, silicon dioxide powder, or silicon carbide powder before being applied and cured.
[0012] Preferably, in this technical solution, the first hard layer and the second hard layer are uniformly coated with inorganic pigment powder or organic pigment powder before being applied and cured.
[0013] Compared with the prior art, the beneficial effects of this utility model include at least the following:
[0014] (1) The bamboo composite board of this utility model is made of all bamboo material and does not contain wood. The core layer is made of multiple layers of woven bamboo curtains laid in a certain proportion. It has high strength and meets the requirements for use in the floor of a carriage. The density after hot-pressing and bonding is not greater than 0.75 g / cm³. 3 Its density is 1.1-1.3 g / cm³ lower than that of conventional reconstituted bamboo boards. 3 This reduces manufacturing and usage costs.
[0015] (2) In a bamboo composite board of the present invention, the first hard layer and the second hard layer are uniformly covered with aluminum oxide powder, silicon dioxide powder or silicon carbide powder before being glued, which enhances the wear resistance of the hard layer of the bamboo composite board.
[0016] (3) In the bamboo composite board of this utility model, before the first hard layer and the second hard layer are glued and cured, inorganic pigment powder or organic pigment powder is evenly spread, which enriches the aesthetics of the bamboo composite board. Attached Figure Description
[0017] Figure 1 This is a three-dimensional exploded view of a bamboo composite board according to an embodiment of the present invention;
[0018] Figure 2 This is a three-dimensional exploded view of a bamboo composite board according to another embodiment of the present utility model;
[0019] Figure reference numerals: 1 core layer, 11 longitudinal bamboo curtain board, 12 transverse bamboo curtain board, 2 first hard layer, 3 second hard layer. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] like Figure 1 As shown, a bamboo composite board is made entirely of bamboo, without using transverse wood veneer. Bamboo exhibits superior mechanical properties compared to wood. It comprises a core layer 1, a first hard layer 2, and a second hard layer 3. The first hard layer 2 and the second hard layer 3 are connected to opposite end faces of the core layer 1. The core layer 1, the first hard layer 2, and the second hard layer 3 are bonded together by hot-pressing. The density of the molded board is no greater than 0.75 g / cm³. 3 The core layer 1 is made of multiple layers of woven bamboo curtain panels laid in a crisscross or longitudinal direction, with the length of the core layer being longitudinal. The first hard layer 2 and the second hard layer 3 are formed by uniformly spreading bamboo powder or bamboo particles and then applying adhesive and curing them.
[0022] Specifically, such as Figure 1 As shown, the core layer 1 may include longitudinal bamboo curtain 11 and transverse bamboo curtain 12. The number of layers of longitudinal bamboo curtain 11 is 2 to 10 times the number of layers of transverse bamboo curtain 12, and each layer of transverse bamboo curtain 12 is located in the middle of the two layers of longitudinal bamboo curtain 11.
[0023] Specifically, such as Figure 2 As shown, the core layer 1 can also consist only of longitudinal bamboo curtain panels 11.
[0024] During production, bamboo curtains woven from bamboo strips are used as raw materials and are manufactured through a series of processes including resin impregnation, assembly, and hot pressing. Bamboo strips of suitable thickness are cut and longitudinally split into parallel pieces and woven into bamboo curtains. During the sorting and arrangement of the bamboo curtains, the thickness of the bamboo curtain panels should not be too thick; the preferred thickness of the longitudinal bamboo curtain panels 11 and the transverse bamboo curtain panels 12 is 1-10 mm. Since the high moisture content of the bamboo curtains will cause the glue to dilute during hot pressing, the moisture content must be controlled. After impregnation with phenolic resin and drying at 80-100℃, the moisture content is controlled to be 8%-10%, resulting in the longitudinal bamboo curtain panels 11 and the transverse bamboo curtain panels 12 used for arranging the assembled panels. The resin used for impregnation can be mainly inorganic glue, phenolic glue, or other adhesives, with the addition of foaming agents, modifiers, and other fillers. The resin mass percentage is 1-5 parts, and the impregnation amount is 14%-20%. To further optimize and reduce costs, the impregnation amount is preferably 6-15%. When arranging the bamboo panels, they can be laid longitudinally or in a crisscross pattern. In the crisscross pattern, the ratio of longitudinal to transverse is 1:0.1-0.5. If the longitudinal direction is 'a' and the transverse direction is 'b', the structure can be 'aba', 'ababa', etc., meaning the number of longitudinal bamboo panels 11 is 2 to 10 times the number of transverse bamboo panels 12, and each transverse bamboo panel 12 is located in the middle of two longitudinal bamboo panels 11. Then, bamboo powder or bamboo granules are evenly spread on the upper and lower ends of the core layer 1, and adhesive is applied. Finally, hot pressing is performed at 155℃ and 10-13MPa to cure the adhesive for 12-13 minutes. Afterwards, steam is released, water is used for cooling, and pressure is released. The scraps are then cut off using a saw, and the material is cut to the required dimensions, edge-sealed, and packaged to obtain a material with a density not exceeding 0.75 g / cm³ suitable for automotive cargo flooring. 3 Bamboo composite board.
[0025] As another specific embodiment of this utility model, in order to enhance the wear resistance of the hard layer of the bamboo structure composite board, the first hard layer 2 and the second hard layer 3 are uniformly spread with aluminum oxide powder, silicon dioxide powder, or silicon carbide powder before being glued, cured and molded.
[0026] As another specific embodiment of this utility model, in order to enrich the aesthetics of the bamboo composite board, the first hard layer 2 and the second hard layer 3 are uniformly sprinkled with inorganic pigment powder or organic pigment powder before being glued, cured and molded.
[0027] Compared with the prior art, the beneficial effects of this utility model include at least the following:
[0028] (1) The bamboo composite board of this utility model is made of all bamboo material and does not contain wood. The core layer is made of multiple layers of woven bamboo curtains laid in a certain proportion. It has high strength and meets the requirements for use in the floor of a carriage. The density after hot-pressing and bonding is not greater than 0.75 g / cm³. 3Its density is 1.1-1.3 g / cm³ lower than that of conventional reconstituted bamboo boards. 3 This reduces manufacturing and usage costs.
[0029] (2) In a bamboo composite board of the present invention, the first hard layer and the second hard layer are uniformly covered with aluminum oxide powder, silicon dioxide powder or silicon carbide powder before being glued, which enhances the wear resistance of the hard layer of the bamboo composite board.
[0030] (3) In the bamboo composite board of this utility model, before the first hard layer and the second hard layer are glued and cured, inorganic pigment powder or organic pigment powder is evenly spread, which enriches the aesthetics of the bamboo composite board.
[0031] In this document, the terms “including,” “comprising,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[0032] In this document, the directional terms such as front, back, top, bottom, left, right, top, and bottom are defined according to the positions of the components in the accompanying drawings and the positions between the components, and are only used for clarity and convenience in expressing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.
[0033] Where there is no conflict, the above embodiments and features described herein can be combined with each other.
Claims
1. A bamboo composite board, characterized in that, The material includes a core layer (1) and a first hard layer (2) and a second hard layer (3) connected to two opposite end faces of the core layer (1). The first hard layer (2), the second hard layer (3) and the core layer (1) are bonded together by hot pressing, and the density is not greater than 0.75 g / cm³. 3 ; The core layer (1) is made of multiple layers of woven bamboo curtain panels; The first hard layer (2) and the second hard layer (3) are formed by applying and curing bamboo powder or bamboo particles evenly spread.
2. The bamboo composite board according to claim 1, characterized in that, The core layer (1) is made of multiple layers of woven bamboo curtains laid in a crisscross pattern. The core layer is longitudinal, including longitudinal bamboo curtains (11) and transverse bamboo curtains (12). The number of layers of the longitudinal bamboo curtains (11) is 2 to 10 times the number of layers of the transverse bamboo curtains (12), and each layer of transverse bamboo curtains (12) is located in the middle of the two layers of longitudinal bamboo curtains (11).
3. The bamboo composite board according to claim 2, characterized in that, The thickness of the longitudinal bamboo curtain panel (11) and the transverse bamboo curtain panel (12) is 1-10 mm.
4. A bamboo composite board according to claim 3, characterized in that, Before the first hard layer (2) and the second hard layer (3) are applied and cured, aluminum oxide powder, silicon dioxide powder or silicon carbide powder are evenly spread on them.
5. A bamboo composite board according to claim 4, characterized in that, Before the first hard layer (2) and the second hard layer (3) are applied and cured, inorganic pigment powder or organic pigment powder is evenly spread on them.