Flame-retardant PP (polypropylene) board
By coating the outside of the PP board with multiple layers of flame-retardant coating and using a locking tongue structure, the flammability of the PP board is solved, the flame-retardant performance is improved and the fire control is enhanced, ensuring splicing stability and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG JINGJING ENVIRONMENTAL PROTECTION CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-05-15
AI Technical Summary
PP boards are flammable and produce molten drips when burning, which can easily cause the fire to spread and cause secondary fires. In addition, toxic and harmful gases are produced during the combustion process.
The outer side of the PP board is coated with a multi-layer flame-retardant coating, and quick splicing is achieved through a locking tongue and spring snap-fit structure. Combined with a reinforced steel frame and multi-layer coating structure, the flame-retardant performance and overall stability are improved.
It improves the flame retardant properties of PP boards, reduces the possibility of fire, slows the spread of fire, reduces the generation of toxic and harmful gases, reduces fire losses, and is convenient and quick to splice.
Smart Images

Figure CN224245934U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flame-retardant PP board technology, and in particular to a flame-retardant PP board. Background Technology
[0002] PP sheet, or polypropylene sheet, is a plastic sheet made from polypropylene resin through extrusion molding. It is lightweight, chemically resistant, has good insulation properties, and is easy to process. It is widely used in building decoration, chemical containers, packaging materials, and electronic device housings, and its excellent comprehensive performance has made it an important alternative to traditional metals and wood.
[0003] However, PP boards are flammable materials with a low oxygen index. They can burn quickly when exposed to an open flame, and the burning process produces molten drips that not only exacerbate the spread of the fire but also cause secondary fires. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a flame-retardant PP board, which aims to improve the problem that the existing technology is a highly flammable material that is prone to causing fires.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A flame-retardant PP board includes a frame, a flame-retardant component installed inside the frame, a shell fixedly connected to the outside of the frame, and a snap-fit component installed inside the shell.
[0007] The flame-retardant component includes a PP sheet, which is fixedly connected inside the frame, and both sides of the PP sheet are provided with a flame-retardant coating.
[0008] As a further description of the above technical solution:
[0009] The snap-fit assembly includes a locking groove, which is formed on both sides of the housing. Locking tongues are slidably connected inside both housings, and a spring is provided between the two locking tongues.
[0010] As a further description of the above technical solution:
[0011] An adjusting plate is fixedly connected to the inner side of each of the two locking tongues, and the spring is located between the two adjusting plates.
[0012] As a further description of the above technical solution:
[0013] The top of the outer shell is provided with a sliding groove, the top of the frame is provided with an adjustment groove, and the adjustment plate is slidably connected inside the sliding groove and the adjustment groove;
[0014] As a further description of the above technical solution:
[0015] The frame has a groove inside, and the two locking tongues engage with the groove.
[0016] As a further description of the above technical solution:
[0017] A mounting frame is fixedly connected to the bottom of the frame, and a reinforcing steel frame is installed inside the mounting frame;
[0018] As a further description of the above technical solution:
[0019] The PP board has a noise-reducing coating on both sides, and an anti-moisture coating on the outer side of the noise-reducing coating.
[0020] As a further description of the above technical solution:
[0021] An anti-aging coating is provided on the outer side of the moisture-absorbing coating, and the anti-aging coating is located at the bottom of the flame-retardant coating.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this invention, a multi-layer flame-retardant coating is applied to the outer side of the PP sheet, covering both sides. The core function of the flame-retardant coating is to enhance the flame-retardant properties of the PP sheet, making it less prone to combustion when exposed to flames or high temperatures. Even if it does ignite, it can self-extinguish within a short time, thereby reducing the likelihood of a fire. Furthermore, when a fire is unavoidable, the flame-retardant coating can slow the burning rate and spread of the fire, buying valuable time for evacuation and firefighting, and reducing casualties and property damage. Finally, the flame-retardant coating also reduces the generation of toxic and harmful gases and smoke during combustion, improving the environment at the fire scene and mitigating harm to human health.
[0024] 2. In this invention, during assembly, simply align the two plates together. The latch will move inward due to the groove, while the spring contracts. Once the latch is fully inside the groove, the spring will spring out and provide a restoring force, firmly locking the latch inside the groove, thus achieving quick engagement. During disassembly, simply pinch the adjusting plate; the spring will contract, and the latch will easily disengage from the groove. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of a flame-retardant PP board proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the structure of a flame-retardant coating for a flame-retardant PP board proposed in this utility model;
[0027] Figure 3This is a schematic diagram of the mounting frame for a flame-retardant PP board proposed in this utility model.
[0028] Figure 4 This is a cross-sectional view of the outer shell of a flame-retardant PP sheet proposed in this utility model;
[0029] Figure 5 This is an exploded view of a flame-retardant PP sheet spring proposed in this utility model.
[0030] Legend:
[0031] 1. Frame; 2. Reinforcing steel frame; 3. Groove; 4. Outer shell; 5. Slide groove; 6. Lock groove; 7. Adjusting plate; 8. Lock tongue; 9. Spring; 10. PP board; 11. Noise-reducing coating; 12. Moisture-resistant coating; 13. Anti-aging coating; 14. Flame-retardant coating; 15. Adjusting groove; 16. Mounting frame. Detailed Implementation
[0032] 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.
[0033] Reference Figure 1 and Figure 2 The present invention provides an embodiment of a flame-retardant PP board, comprising a frame 1, a flame-retardant component installed inside the frame 1, a shell 4 fixedly connected to the outside of the frame 1, and a snap-fit component installed inside the shell 4.
[0034] The flame-retardant component includes a PP board 10, which is the basic load-bearing structure of the board, providing basic shape and strength support for the entire flame-retardant PP board. The PP board 10 is fixedly connected inside the frame 1. Both sides of the PP board 10 are provided with flame-retardant coatings 14. These flame-retardant coatings 14 firstly improve the flame-retardant performance of the PP board, making it less likely to burn when exposed to flames or high temperatures, or allowing it to self-extinguish in a short time, reducing the possibility of fire. Secondly, when a fire is unavoidable, it can slow down the burning speed and spread of the fire, buying valuable time for personnel evacuation and fire fighting and rescue, and reducing casualties and property losses caused by the fire. Finally, it can also reduce the generation of toxic and harmful gases and smoke during combustion, improve the fire scene environment, and reduce harm to the human body. Common flame-retardant coatings 14 include phosphorus-based flame-retardant coatings and halogen-based flame-retardant coatings. Phosphorus-based flame-retardant coatings form phosphate esters during combustion, covering the surface of the PP board to isolate oxygen, thereby inhibiting combustion. Halogen-based flame-retardant coatings can release hydrogen halide gas, capture free radicals in the combustion reaction, and interrupt the combustion chain reaction.
[0035] Reference Figure 1 , Figure 4 and Figure 5 The locking assembly includes locking grooves 6, which are located on both sides of the outer shell 4. The locking grooves 6 provide space and a channel for the movement and locking of the locking tongue 8. Locking tongues 8 are slidably connected inside both outer shells 4. The locking tongue 8 is a key component for achieving locking. A spring 9 is provided between the two locking tongues 8, providing a restoring force to ensure that the locking tongue 8 is stably locked within the groove 3 during locking. Adjusting plates 7 are fixedly connected to the inner sides of both locking tongues 8, with the spring 9 located between the two adjusting plates 7. A sliding groove 5 is provided on the top of the outer shell 4, and an adjusting groove 15 is provided on the top of the frame 1. The adjusting plates 7 are slidably connected inside the sliding groove 5 and the adjusting groove 15. This allows for assembly... When the two plates are brought together, the latch 8 moves inward due to the groove 3. At this time, the spring 9 contracts. When the latch 8 is fully inserted into the groove 3, the spring 9 pops out, providing a restoring force to lock the latch 8 inside the groove 3, thus achieving the purpose of quick locking. The frame 1 has a groove 3 inside, and the two latches 8 and the groove 3 are locked together. The adjusting plate 7 is the operating component that controls the movement of the latch 8. This connection method ensures that when the adjusting plate 7 is operated, it can synchronously drive the latch 8 to move, thereby realizing the contraction and popping of the latch 8. When disassembling, simply pinch the adjusting plate 7, and the spring 9 will contract, and the latch 8 can be disengaged from the groove 3, which is convenient and quick.
[0036] Reference Figures 1-3A mounting frame 16 is fixedly connected to the bottom of frame 1, providing an installation position for the reinforcing steel frame 2. The reinforcing steel frame 2 is installed inside the mounting frame 16, which significantly improves the overall strength and load-bearing capacity of frame 1, making the flame-retardant PP board more stable and reliable during use and less prone to deformation. Noise-reducing coatings 11 are provided on both sides of the PP board 10. The noise-reducing coatings 11 can effectively absorb and block the transmission of sound, reduce the impact of external noise on the indoor environment, and improve the comfort of use. Common noise-reducing coatings 11 include polyurethane foam coatings and butyl rubber coatings. The polyurethane foam coating has a large number of tiny pores inside, which can effectively absorb sound energy and reduce noise transmission; the butyl rubber coating has good elasticity and damping properties, and can attenuate sound through its own vibration. An anti-moisture coating 12 is provided on the outside of the noise-reducing coating 11, which can prevent moisture in the air from entering the PP board. Inside the PP board 10, to prevent deformation and damage caused by moisture, and to extend the service life of the board, common anti-moisture coatings 12 include epoxy resin coatings and polyvinyl chloride coatings. Epoxy resin coatings have a dense structure that can effectively block moisture penetration; polyvinyl chloride coatings have strong water resistance and can form a waterproof film on the surface of the board. An anti-aging coating 13 is set on the outside of the anti-moisture coating 12. The anti-aging coating 13 can resist the erosion of the board by external factors such as ultraviolet rays and temperature changes, slow down the aging rate of the board, and maintain the performance and appearance of the board. Common anti-aging coatings 13 include acrylic coatings and fluorocarbon coatings. Acrylic coatings have excellent weather resistance and can resist the effects of ultraviolet rays and temperature changes; fluorocarbon coatings have good chemical stability, strong light and weather resistance, and can maintain the coating performance for a long time. The anti-aging coating 13 is at the bottom of the flame retardant coating 14.
[0037] Working principle: First, a multi-layer flame-retardant coating 14 is applied to the outer side of the PP board 10, and both sides are coated. The core function of the flame-retardant coating 14 is to improve the flame-retardant performance of the PP board, making it less likely to burn when exposed to flames or high temperatures, or to extinguish itself in a short time, reducing the possibility of fire. In addition, when a fire is unavoidable, the flame-retardant coating can slow down the burning speed of the PP board and the spread of fire, buying valuable time for personnel evacuation and fire fighting and rescue, and reducing casualties and property losses caused by the fire. Finally, the flame-retardant coating 14 can also reduce the generation of toxic and harmful gases and smoke during combustion, improve the environment at the fire scene, and reduce harm to the human body.
[0038] Secondly, when assembling, simply bring the two plates together. The latch 8 moves inward due to the groove 3, and the spring 9 contracts. When the latch 8 is fully inside the groove 3, the spring 9 pops out, providing a restoring force to lock the latch 8 inside the groove 3, thus achieving the purpose of quick locking. At the same time, when disassembling, simply pinch the adjusting plate 7, the spring 9 contracts, and the latch 8 can be disengaged from the groove 3.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A flame-retardant PP board, comprising a frame (1), characterized in that: The frame (1) is equipped with flame-retardant components inside, and the outer shell (4) is fixedly connected to the outer side of the frame (1). The snap-fit components are installed inside the outer shell (4). The flame-retardant component includes a PP plate (10), which is fixedly connected inside the frame (1), and both sides of the PP plate (10) are provided with a flame-retardant coating (14).
2. The flame-retardant PP board according to claim 1, characterized in that: The snap-fit assembly includes a locking groove (6), which is opened on both sides of the housing (4). Both housings (4) are slidably connected with locking tongues (8), and a spring (9) is provided between the two locking tongues (8).
3. The flame-retardant PP board according to claim 2, characterized in that: An adjusting plate (7) is fixedly connected to the inner side of each of the two locking tongues (8), and the spring (9) is located between the two adjusting plates (7).
4. A flame-retardant PP board according to claim 3, characterized in that: The top of the outer shell (4) is provided with a sliding groove (5), the top of the frame (1) is provided with an adjustment groove (15), and the adjustment plate (7) is slidably connected inside the sliding groove (5) and the adjustment groove (15).
5. A flame-retardant PP board according to claim 2, characterized in that: The frame (1) has a groove (3) inside, and the two locking tongues (8) and the groove (3) are engaged with each other.
6. A flame-retardant PP board according to claim 1, characterized in that: The bottom of the frame (1) is fixedly connected to a mounting frame (16), and a reinforcing steel frame (2) is installed inside the mounting frame (16).
7. A flame-retardant PP board according to claim 1, characterized in that: The PP board (10) is provided with a noise reduction coating (11) on both sides, and an anti-moisture coating (12) is provided on the outer side of the noise reduction coating (11).
8. A flame-retardant PP board according to claim 7, characterized in that: An anti-aging coating (13) is provided on the outside of the moisture-absorbing coating (12), and the anti-aging coating (13) is at the bottom of the flame-retardant coating (14).