Fire-resistant and flame-retardant plywood

Abstract

The utility model relates to fire-resistant and flame-retardant plywood, which belongs to the technical field of plywood and comprises a plywood body, the plywood body comprises a core plate, a decorative plate and a bottom plate, a protective layer is arranged outside the core plate, and a connecting piece is arranged outside the core plate. The protective layer comprises a weather-proof layer, a waterproof layer, an anti-corrosion layer, a fireproof layer and a first high-density fiberboard; the connecting piece comprises a T-shaped block fixedly installed on one side of the core plate, and a T-shaped groove matched with the T-shaped block is formed in the other side of the core plate. According to the fire-resistant and flame-retardant plywood, the protective property of the plywood can be effectively improved, and a series of aging phenomena such as color fading, color changing, cracking, pulverization and strength reduction caused by the influence of external conditions such as sunlight irradiation, temperature change and wind and rain on the plywood body can be prevented; and the plywood body has good fireproof and waterproof capacity, so that the advantages of high practicability, good protection effect and the like are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plywood, in particular to a fire-resistant and flame-retardant plywood. Background Art

[0002] Plywood is one of the three major types of man-made boards. It is a three-layer or multi-layer board material made by peeling wood segments into veneers or planing wood blocks into veneers, and then gluing them with adhesives. It usually uses an odd number of veneers, and glues the fibers of adjacent veneers perpendicular to each other. A group of veneers is usually assembled and glued in such a way that the grain directions of adjacent layers are perpendicular to each other. Usually, the surface board and the inner layer are symmetrically arranged on both sides of the center layer or the core. The veneers coated with glue are staggered in the direction of the grain to form a blank, which is pressed under heating or non-heating conditions. Plywood can improve the utilization rate of wood and is a major way to save wood. The application areas of plywood include furniture, airplanes, ships, trains, cars, buildings, and packaging boxes.

[0003] After searching, the announcement number CN214188734U discloses a plywood, which includes a surface board, a back board and a core board placed between the surface board and the back board, the surface board and the back board are located on both sides of the core board and connected to the core board, a surface layer is arranged on the side of the surface board away from the core board, the surface layer is arranged as a bamboo mat, and adhesive layers are arranged between the layers of the surface board, the core board, the back board and the surface layer. This application has the effect of energy saving and environmental protection.

[0004] However, the protection of the plywood of the utility model, for example, is poor in weather resistance during use, which can easily affect and damage the internal board layer, affecting subsequent use, and due to the limitations of the physical properties of wood, the fireproof and waterproof properties of the plywood are greatly limited, which seriously affects the use quality of the plywood and cannot meet the use requirements. Therefore, a fire-resistant and flame-retardant plywood is proposed to solve the above-mentioned problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a fire-resistant and flame-retardant plywood, which has the advantages of strong practicability and good protective effect, and solves the problem of poor protective performance of plywood.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fire-resistant and flame-retardant plywood, comprising a plywood body, wherein the plywood body comprises a core board, a decorative board and a bottom board, a protective layer is arranged on the outside of the core board, and a connecting piece is arranged on the outside of the core board;

[0007] The protective layer includes a weather-resistant layer, a waterproof layer, an anti-corrosion layer, a fire-proof layer and a first high-density fiberboard;

[0008] The connecting piece comprises a T-shaped block fixedly mounted on one side of the core plate, and the other side of the core plate is provided with a T-shaped groove matched with the T-shaped block.

[0009] Furthermore, the weather-resistant layer, waterproof layer, anti-corrosion layer, fire-proof layer and the first high-density fiberboard are distributed in sequence from top to bottom, and connecting layers are provided on both the upper and lower sides of the protective layer.

[0010] Furthermore, an aluminum oxide layer is provided between the first high-density fiberboard and the fireproof layer, and the connecting layer is a polyethylene-modified polyvinyl acetate adhesive.

[0011] Furthermore, a second high-density fiberboard is fixedly installed between the core board and the bottom board, and the thickness of the core board is set to 2-4 cm.

[0012] Furthermore, the first high-density fiberboard and the second high-density fiberboard have the same structure, and the thickness of the first high-density fiberboard and the second high-density fiberboard are both 1mm-2mm.

[0013] Furthermore, the thickness of the aluminum oxide layer is 0.3 mm-0.5 mm, and the thickness of the decorative plate is 0.6 mm-1 mm.

[0014] Furthermore, the core board, decorative board, bottom board and protective layer are all connected and fixed by adhesive, the waterproof layer is a glass magnesium board, the weather-resistant layer is a polyester resin weather-resistant layer, the fireproof layer is an aluminum silicate fireproof layer, and the anti-corrosion layer is a polyurethane anti-corrosion layer.

[0015] Compared with the prior art, the utility model provides a fire-resistant and flame-retardant plywood, which has the following beneficial effects:

[0016] 1. The fire-resistant and flame-retardant plywood can effectively improve the protectiveness of the plywood. It can not only prevent the plywood body from fading, discoloration, cracking, powdering and strength reduction due to external conditions such as sunlight, temperature changes, wind and rain, but also make the plywood body have good fireproof and waterproof capabilities, thereby achieving the advantages of strong practicality and good protective effect, solving the problem of poor protectiveness of plywood.

[0017] 2. The fire-resistant and flame-retardant plywood, through the first high-density fiberboard and the second high-density fiberboard, is easy to be coated with various coatings and paints, and has a good decorative effect. At the same time, it has a certain sound absorption effect and excellent physical properties, such as uniform material, good dehydration performance and strong nail holding force. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0019] Figure 2This is a schematic diagram of the structure of the protective layer of the utility model;

[0020] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure shown.

[0021] In the figure: 1, plywood body; 100, core board; 110, decorative board; 120, bottom board; 130, protective layer; 1301, weather-resistant layer; 1302, waterproof layer; 1303, anti-corrosion layer; 1304, fire-proof layer; 1305, aluminum oxide layer; 1306, first high-density fiberboard; 1307, connecting layer; 140, T-block; 150, T-groove; 160, second high-density fiberboard. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3 A fire-resistant and flame-retardant plywood comprises a plywood body 1, wherein the plywood body 1 comprises a core board 100, a decorative board 110 and a bottom board 120, and a protective layer 130 is arranged outside the core board 100, wherein the protective layer 130 comprises a weather-resistant layer 1301, a waterproof layer 1302, an anti-corrosion layer 1303, a fire-resistant layer 1304 and a first high-density fiberboard 1306. The weather-resistant layer 1301 is arranged to improve the weather-resistant effect of the plywood body 1, and prevent the plywood body 1 from fading, discoloration, cracking, powdering and strength reduction due to the influence of external conditions such as sunlight, temperature changes, wind and rain.

[0024] It should be noted that the weather-resistant layer 1301, the waterproof layer 1302, the anti-corrosion layer 1303, the fireproof layer 1304 and the first high-density fiberboard 1306 are sequentially arranged from top to bottom, and the upper and lower sides of the protective layer 130 are provided with a connecting layer 1307. The waterproof layer 1302 and the anti-corrosion layer 1303 can effectively inhibit chemical corrosion or electrochemical corrosion of the plywood body 1, and effectively protect the plywood body 1.

[0025] Among them, an aluminum oxide layer 1305 is arranged between the first high-density fiberboard 1306 and the fireproof layer 1304, and the connecting layer 1307 is a polyethylene modified polyvinyl acetate adhesive. The polyethylene modified polyvinyl acetate adhesive has a strong adhesive force, which ensures that the plywood has a long service life, and it is pollution-free, safe and harmless to the environment, and proves that the plywood has a good energy-saving and environmental protection effect. Through the fireproof layer 1304 and the aluminum oxide layer 1305, the protectiveness of the plywood body 1 is further strengthened, so that the plywood body 1 has good fireproof and waterproof capabilities.

[0026] In this embodiment, a second high-density fiberboard 160 is fixedly installed between the core board 100 and the bottom board 120, and the thickness of the core board 100 is set to 2-4cm. The first high-density fiberboard 1306 has the same structure as the second high-density fiberboard 160, and the thickness of the first high-density fiberboard 1306 and the second high-density fiberboard 160 are both 1mm-2mm. The thickness of the aluminum oxide layer 1305 is 0.3mm-0.5mm, and the thickness of the decorative board 110 is 0.6mm-1mm. Through the first high-density fiberboard 1306 and the second high-density fiberboard 160, it is easy to apply various coatings and paints, and has a good decorative effect. At the same time, it has a certain sound absorption effect and excellent physical properties, such as uniform material, good dehydration performance and strong nail holding force.

[0027] In addition, the core board 100, the decorative board 110, the bottom board 120 and the protective layer 130 are all connected and fixed by adhesives. The waterproof layer 1302 is a glass magnesium board, which has high waterproof and fireproof properties. The weather-resistant layer 1301 is a polyester resin weather-resistant layer, the fire-resistant layer 1304 is an aluminum silicate fire-resistant layer, and the anti-corrosion layer 1303 is a polyurethane anti-corrosion layer, which has good resistance to industrial atmosphere, seawater, acid, oil, salt spray, mildew, and combustion. The weather-resistant layer 1301 can also be an epoxy resin weather-resistant layer and an amino resin weather-resistant layer.

[0028] In this embodiment, a connecting piece is provided on the outside of the core board 100; the connecting piece includes a T-shaped block 140 fixedly installed on one side of the core board 100, and a T-shaped groove 150 is provided on the other side of the core board 100 to match the T-shaped block 140. By providing the T-shaped block 140 and the T-shaped groove 150, two adjacent plywood bodies 1 can be connected.

[0029] The working principle of the above embodiment is:

[0030] When in use, the weather-resistant layer 1301 is provided to improve the weather resistance of the plywood body 1, and prevent the plywood body 1 from fading, discoloration, cracking, powdering and strength reduction due to external conditions such as sunlight, temperature changes, wind and rain. The waterproof layer 1302 and the anti-corrosion layer 1303 can effectively inhibit the plywood body 1 from chemical corrosion or electrochemical corrosion, and effectively protect the plywood body 1. The fireproof layer 1304, the aluminum oxide layer 1305, the first high-density fiberboard 1306 and the second high-density fiberboard 160 further strengthen the protectiveness of the plywood body 1, so that the plywood body 1 has good fireproof and waterproof capabilities.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire-resistant and flame-retardant plywood, comprising a plywood body (1), characterized in that: The plywood body (1) comprises a core board (100), a decorative board (110) and a bottom board (120); a protective layer (130) is arranged outside the core board (100); and a connecting piece is arranged outside the core board (100); The protective layer (130) includes a weather-resistant layer (1301), a waterproof layer (1302), an anti-corrosion layer (1303), a fire-proof layer (1304), and a first high-density fiberboard (1306); The connecting piece comprises a T-shaped block (140) fixedly mounted on one side of the core plate (100), and the other side of the core plate (100) is provided with a T-shaped groove (150) adapted to the T-shaped block (140).

2. The fire-resistant and flame-retardant plywood according to claim 1, characterized in that: The weather-resistant layer (1301), the waterproof layer (1302), the anti-corrosion layer (1303), the fire-proof layer (1304) and the first high-density fiberboard (1306) are sequentially arranged from top to bottom, and the upper and lower sides of the protective layer (130) are both provided with connecting layers (1307).

3. The fire-resistant and flame-retardant plywood according to claim 2, characterized in that: An aluminum oxide layer (1305) is provided between the first high-density fiberboard (1306) and the fireproof layer (1304), and the connecting layer (1307) is a polyethylene-modified polyvinyl acetate adhesive.

4. The fire-resistant and flame-retardant plywood according to claim 1, characterized in that: A second high-density fiberboard (160) is fixedly installed between the core board (100) and the bottom board (120), and the thickness of the core board (100) is set to 2-4 cm.

5. The fire-resistant and flame-retardant plywood according to claim 4, characterized in that: The first high-density fiberboard (1306) and the second high-density fiberboard (160) have the same structure, and the thickness of the first high-density fiberboard (1306) and the second high-density fiberboard (160) are both 1 mm-2 mm.

6. The fire-resistant and flame-retardant plywood according to claim 3, characterized in that: The thickness of the aluminum oxide layer (1305) is 0.3 mm to 0.5 mm, and the thickness of the decorative plate (110) is 0.6 mm to 1 mm.

7. The fire-resistant and flame-retardant plywood according to claim 1, characterized in that: The core board (100), the decorative board (110), the bottom board (120) and the protective layer (130) are all connected and fixed by means of an adhesive, the waterproof layer (1302) is a glass magnesium board, the weather-resistant layer (1301) is a polyester resin weather-resistant layer, the fireproof layer (1304) is an aluminum silicate fireproof layer, and the anti-corrosion layer (1303) is a polyurethane anti-corrosion layer.

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