Flame-retardant rubber belt
By setting filling channels and release ports within the neoprene rubber tape, and utilizing the combination of magnesium hydroxide flame retardant and hot melt adhesive, more efficient flame retardancy and structural reinforcement are achieved, solving the problem of poor flame retardant effect of existing flame-retardant and fire-resistant silicone tapes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINJIANG WUYANG RUBBER PROD CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-04-21
AI Technical Summary
Existing flame-retardant and fire-resistant silicone tapes have limited flame-retardant effects when burning, and their structural strength needs to be improved.
The belt, made of chloroprene rubber, has a filling channel and a release port. The filling channel contains magnesium hydroxide flame retardant, and the release port has a hot melt adhesive part and a deformation part. The hot melt adhesive part melts at high temperature, and the deformation part deforms under the push of gas, releasing flame retardant gas to suppress combustion.
It improves the flame retardant effect, enhances the structural strength and service life of the rubber belt, reduces the direct contact between the liquid and the flame retardant, and improves the connection stability.
Smart Images

Figure CN224150674U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rubber belt technology, and more specifically, to a flame-retardant rubber belt. Background Technology
[0002] Rubber strips are long strips made of rubber material. Depending on their specific shape and elasticity, they can be used in different scenarios.
[0003] Chinese utility model patent CN203552766U discloses a flame-retardant and fire-resistant silicone tape. The flame-retardant and fire-resistant silicone tape includes a glass fiber cloth layer, a silicone rubber layer, and a protective film layer. The silicone rubber layer is located between the glass fiber cloth layer and the protective film layer. The silicone rubber layer is a flame-retardant and fire-resistant silicone rubber material. The protective film layer is a polyester film layer, a polyamide film layer, or a polyimide film layer. The bonding surface between the protective film layer and the silicone rubber layer has a rough structure.
[0004] The problem solved by the above solution is that it adopts a three-layer structure and is produced by a three-roll or four-roll calender. The glass fiber cloth layer can effectively enhance the mechanical properties of the flame-retardant and fire-resistant silicone tape, and the flame-retardant silicone rubber layer can effectively ensure the flame-retardant and fire-resistant properties of the product.
[0005] This application provides another technical solution to this technical problem. Utility Model Content
[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a flame-retardant rubber belt.
[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0008] A flame-retardant rubber belt includes a belt body, a filling channel formed within the belt body, and a release port formed on the outer side of the belt body communicating with the filling channel. Both the release port and the filling channel are arranged along the length direction of the belt body. The release port is provided with a hot melt adhesive portion, and the filling channel is provided with a flame retardant that decomposes into a flame-retardant gas upon heating.
[0009] The present invention is further configured such that: two deformable parts are symmetrically formed at one end of the release port near the filling channel, the two deformable parts abut against each other, and the hot melt adhesive part contacts the deformable parts.
[0010] The present invention is further configured such that the cross-section of the release port is trapezoidal, with a larger cross-sectional width at the end near the deformation part and a smaller cross-sectional width at the end away from the deformation part.
[0011] The present invention is further configured such that reinforcing ribs are formed inside the filling channel.
[0012] The present invention is further configured such that the flame retardant is selected as magnesium hydroxide flame retardant.
[0013] The present invention is further configured such that the belt body is made of chloroprene rubber.
[0014] In summary, this utility model has the following beneficial effects:
[0015] When the rubber belt is burned, the hot melt adhesive part will detach from the belt body due to the heat. The heat will be transferred to the flame retardant through the belt body. The flame retardant releases flame retardant gas when heated. The flame retardant gas will push the deformation part to deform and flow out of the belt body through the release port. The flame retardant gas inhibits the flame from burning the rubber belt and increases the flame retardant effect of the rubber belt. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 for Figure 1 Enlarged view of point A in the middle.
[0018] In the diagram: 1. Belt body; 2. Filler channel; 3. Release port; 4. Reinforcing rib; 5. Flame retardant; 6. Hot melt adhesive section. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0020] like Figure 1 and Figure 2 As shown, this application provides a flame-retardant rubber belt, including a belt body 1. The belt body 1 is made of neoprene rubber, which has corrosion resistance, thus improving service life. A filling channel 2 is formed inside the belt body 1, and a release port 3 communicating with the filling channel 2 is formed on the outside of the belt body 1. Both the release port 3 and the filling channel 2 are arranged along the length direction of the belt body 1. A reinforcing rib 4 is formed inside the filling channel 2, which can support the belt body 1 and increase the strength of the belt body 1.
[0021] like Figure 1and Figure 2 As shown, two deformable parts are symmetrically formed at the position of the release port 3 near the filling channel 2. The two deformable parts abut each other. In the initial state, the two deformable parts will separate the release port 3 and the filling channel 2 due to their own elasticity. Flame retardant 5 is provided in the filling channel 2. The flame retardant 5 is magnesium hydroxide flame retardant 5. When the rubber belt is heated, the heat is transferred to the magnesium hydroxide flame retardant 5 along with the belt body 1. The magnesium hydroxide flame retardant 5 decomposes into flame retardant gas when heated. The gas will push the deformable parts to deform, so that a gap is formed between two adjacent deformable parts. The flame retardant gas will flow out to the outside through the gap, so as to achieve the flame retardant effect.
[0022] like Figure 1 and Figure 2 As shown, the release port 3 is provided with a hot melt adhesive part 6, which is in contact with the deformable part. The hot melt adhesive part 6 plays an adhesive and blocking role, reducing the probability of direct contact between external liquids and flame retardant 5. When the rubber belt is heated, the hot melt adhesive part 6 will melt into a fluid, reducing the adhesive and blocking effect on the deformable part and ensuring that the flame retardant gas can be released. The cross-section of the release port 3 is trapezoidal, with a larger cross-sectional width at the end near the deformable part and a smaller cross-sectional width at the end away from the deformable part. This shape makes it difficult for the hot melt adhesive part 6 to separate from the deformable part and the belt body 1 when the rubber belt comes into contact with an object, thus improving the connection stability.
[0023] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A fire-retardant rubber belt comprising a belt body (1), characterized in that: The filling channel (2) is formed in the band (1), and a release port (3) in communication with the filling channel (2) is formed on the outer side of the band (1), the release port (3) and the filling channel (2) are arranged along the length direction of the band (1), the release port (3) is provided with a hot melt glue part (6), and the filling channel (2) is provided with a flame retardant (5) for decomposing heat-decomposed flame-retardant gas.
2. A fire resistant rubber belt according to claim 1, characterized in that: Two deformation parts are symmetrically formed at the position of the release port (3) close to one end of the filling channel (2), the two deformation parts abut against each other, and the hot melt glue part (6) is in contact with the deformation part.
3. A fire resistant rubber belt according to claim 2, characterized in that: The cross section of the release port (3) is in a trapezoidal structure, the cross section width close to one end of the deformation part is large, and the cross section width far from one end of the deformation part is small.
4. A fire resistant rubber belt as in claim 1, wherein: The filling channel (2) is formed with a reinforcing rib (4).
5. A fire resistant rubber belt as in claim 1, wherein: The flame retardant (5) is a magnesium hydroxide flame retardant (5).
6. A fire resistant rubber belt as in claim 1 wherein: The band (1) is made of neoprene.
Citation Information
Patent Citations
Fire-retardant silicone band
CN203552766U