Rodent bite resistant flame retardant yarn and sleeve
By designing a uniform distribution of flame-retardant strips and anti-bite fillers within the yarn, the problem of the yarn being easily chewed by rodents is solved, achieving a combination of long-lasting protection and flame-retardant performance, thus improving the safety and service life of the yarn.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGSHAN BAISHENG NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-05-23
- Publication Date
- 2026-07-03
Smart Images
Figure CN224450996U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of yarn, and more particularly to a flame-retardant yarn and sheath that is resistant to rodent bites. Background Technology
[0002] Rodent threads are widely used in power cables, optical fiber cables, and industrial ropes, and are mostly made of plastics (such as polyethylene and polyvinyl chloride) or composite materials. However, when used outdoors or underground, ordinary rodent threads are easily chewed by rodents such as rats, leading to structural damage and even functional failure. Existing rodent-proof technologies mainly employ two methods: one is to provide physical protection by wrapping the outer layer of the thread with a metal braid or a rigid plastic sheath, but this method significantly increases the weight and cost of the product and severely impairs the flexibility of the thread; the other is a chemical repellent solution by coating the surface with a bittering agent (such as denaphalonamine), which, although initially effective, suffers from a significant decrease in rodent-proof performance over long-term use due to the easy wear of the coating, failing to provide durable protection.
[0003] Therefore, there is a need to provide a flame-retardant filament and sheath that can provide both long-lasting rodent protection and flame retardancy. Utility Model Content
[0004] In view of this, it is necessary to provide a flame-retardant filament that can both provide long-lasting rodent protection and meet flame-retardant requirements, in order to solve the above problems.
[0005] An embodiment of this application provides a flame-retardant wire that is resistant to rodent bites, comprising:
[0006] wire core;
[0007] Flame-retardant filler is distributed along the radial direction of the wire core, and the flame-retardant filler forms multiple spaced flame-retardant bands on the cross-section of the wire core, each of the flame-retardant bands extending along the axial direction of the wire core and penetrating the cross-section of the wire core;
[0008] Anti-bite filler is integrated into the wire core and the flame-retardant filler.
[0009] In at least one embodiment of this application, the core is made from melted plastic granular material.
[0010] In at least one embodiment of this application, the cross-sectional area formed by the flame-retardant filler along the radial direction of the core accounts for about 25% of the cross-sectional area of the flame-retardant filament.
[0011] In at least one embodiment of this application, the cross-sectional area formed by the core along the radial direction accounts for about 75% of the cross-sectional area of the flame-retardant filament.
[0012] In at least one embodiment of this application, the cross-sectional area formed by the anti-bite filler along the radial direction of the wire core accounts for about 1% of the cross-sectional area of the flame-retardant wire.
[0013] In at least one embodiment of this application, the anti-bite filler is a bittering agent.
[0014] In at least one embodiment of this application, the cross-sectional shape of the flame-retardant filament is circular, elliptical, or polygonal.
[0015] In at least one embodiment of this application, the anti-bite filler is uniformly dispersed in the wire core and the flame-retardant filler in the form of microparticles, and the particle size of the microparticles is 10μm~100μm.
[0016] In at least one embodiment of this application, the anti-bite filler and the flame-retardant filler are integrally formed in the wire core by a melt co-extrusion process.
[0017] An embodiment of this application provides a sleeve comprising any of the rodent-resistant flame-retardant threads described above;
[0018] The sleeve includes a first wire harness and a second wire harness, and the sleeve is woven from the first wire harness and the second wire harness. Both the first wire harness and the second wire harness are twisted together from multiple flame-retardant wires.
[0019] The aforementioned flame-retardant thread designed to prevent rodent bites ensures that the flame-retardant material can be in contact with any biting point by designing the radial distribution of the flame-retardant band, overcoming the defect of local failure of traditional coatings. The bulk fusion design of the anti-bite filler avoids the shortcomings of easy wear of the surface coating. When rodents come into contact with the thread, they will feel disgusted by the bitter taste and irritating odor of the anti-bite filler, thereby reducing gnawing behavior and achieving long-term protection. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the radial cross-section of a flame-retardant filament that can prevent rodent bites, as described in an embodiment of this application.
[0021] Figure 2 This is a schematic diagram of the axial cross-section of the flame-retardant filament in the embodiments of this application.
[0022] Figure 3 This is a schematic diagram of the structure of the first and second wire harnesses of the sleeve.
[0023] Explanation of main component symbols
[0024] 100. A flame-retardant thread that is resistant to rodent bites; 10. Thread core; 20. Flame-retardant filler; 21. Flame-retardant tape; 30. Anti-bite filler;
[0025] 200, a type of sleeve; 210, a first wire harness; 220, a second wire harness. Detailed Implementation
[0026] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.
[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.
[0028] An embodiment of this application provides a flame-retardant wire that is resistant to rodent bites, comprising:
[0029] wire core;
[0030] Flame-retardant filler is distributed along the radial direction of the wire core, and the flame-retardant filler forms multiple spaced flame-retardant bands on the cross-section of the wire core, each of the flame-retardant bands extending along the axial direction of the wire core and penetrating the cross-section of the wire core.
[0031] Anti-bite filler is integrated into the wire core and the flame-retardant filler.
[0032] The aforementioned flame-retardant thread designed to prevent rodent bites ensures that the flame-retardant material can be in contact with any biting point by designing the radial distribution of the flame-retardant band, overcoming the defect of local failure of traditional coatings. The bulk fusion design of the anti-bite filler avoids the shortcomings of easy wear of the surface coating. When rodents come into contact with the thread, they will feel disgusted by the bitter taste and irritating odor of the anti-bite filler, thereby reducing gnawing behavior and achieving long-term protection.
[0033] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0034] according to Figures 1-3 This application provides a flame-retardant wire 100 that is resistant to rodent bites, comprising: a wire core 10, a flame-retardant filler 20, and an anti-bite filler 30.
[0035] The flame-retardant filler 20 is distributed along the radial direction of the wire core 10. The flame-retardant filler 20 forms a plurality of spaced flame-retardant strips 21 on the cross section of the wire core 10. Each flame-retardant strip 21 extends along the axial direction of the wire core 10 and penetrates the cross section of the wire core 10. The anti-bite filler 30 is fused into the wire core 10 and the flame-retardant filler 20.
[0036] Specifically, the core 10 is the main carrier of the thread and is made of fused plastic granules. The plastic granules can be PET raw materials. During the production process, the plastic granules are stirred at high temperature to make them melt, and then stretched multiple times to form the core 10.
[0037] Furthermore, the flame-retardant strip 21 axially penetrates the cross-section of the core 10, enabling the flame-retardant filler 20 to exert its flame-retardant effect uniformly in all directions of the wire. This ensures that after any part is bitten or rubbed, the biting surface and the friction surface will contact the flame-retardant material, solving the problem of local failure of traditional coatings. The multiple spaced flame-retardant strips 21 ensure that the wire has uniform flame-retardant performance in both the radial and axial directions, avoiding the problem of insufficient local flame-retardant performance and improving the overall safety of the wire.
[0038] It should be noted that the flame-retardant filler 20 of this application is a type of plastic granules containing flame retardants. During the production process, the plastic granules containing flame retardants are stirred at high temperature to make them melt and form the flame-retardant filler 20.
[0039] Furthermore, the anti-bite filler 30 is a bittering agent material. The bulk fusion of the anti-bite filler 30 allows rodents to access the bittering agent at any bite depth, overcoming the defects caused by surface coating wear and failure. The anti-bite filler 30 is combined with the plastic matrix in a dissolved or micro-dispersed state, and its distribution density exhibits a homogeneous characteristic along the radial direction of the yarn. The added rodent-repellent filler can prevent rodents from damaging the yarn, reducing problems such as yarn breakage and damage caused by rodent gnawing, thereby extending the service life of the yarn. The flame-retardant function can buy more time for personnel evacuation and rescue in emergencies such as fires, reducing the damage of fire to the yarn and its surrounding environment.
[0040] In one specific embodiment, along the radial direction of the core 10, the cross-sectional area formed by the flame-retardant filler 20 accounts for about 25% of the cross-sectional area of the flame-retardant filament; the cross-sectional area formed by the core 10 accounts for about 75% of the cross-sectional area of the flame-retardant filament; and the cross-sectional area formed by the anti-bite filler 30 accounts for about 1% of the cross-sectional area of the flame-retardant filament.
[0041] Specifically, this proportion of flame-retardant filler 20 can form a relatively dense and reasonably distributed flame-retardant network in the core 10, with a cross-sectional area ratio of about 25%. Under the premise of ensuring that the yarn has a good flame-retardant effect, the amount of flame-retardant filler 20 will not be excessively increased, thereby effectively controlling production costs.
[0042] As the main structure of the thread, core 10, with a cross-sectional area ratio of approximately 75%, ensures that the thread possesses basic mechanical properties. Core 10 bears the main tensile force and support of the thread, and is a key component for the thread to function properly.
[0043] The cross-sectional area of the anti-bite filler 30 is relatively small, but it is evenly distributed in the thread, which enables the thread as a whole to have the property of repelling rodents such as mice from gnawing. A proportion of about 1% is enough to make mice feel the bitter taste and irritating smell of the anti-bite filler 30 when they come into contact with the thread, thereby generating a sense of disgust and reducing gnawing behavior.
[0044] In one specific embodiment, the anti-bite filler 30 is a bittering agent.
[0045] Specifically, the bittering agent is denatum saccharin (including 90823-38-4 denatum saccharin and 3734-33-6 benzodenatum), which has an extremely strong bitter taste. Even very low concentrations are enough to induce a strong aversion in mice, effectively preventing them from gnawing on the thread. When mice come into contact with thread containing this bittering agent, the bitterness quickly stimulates their taste receptors, causing a strong sense of discomfort and driving them away from the thread, thus preventing them from gnawing. Although denatum saccharin has a strong bitter taste, it is relatively safe for humans and animals and does not produce significant toxicity under normal use.
[0046] In one specific embodiment, the cross-sectional shape of the flame-retardant filament is circular, elliptical, or polygonal.
[0047] In one specific embodiment, the anti-bite filler 30 is uniformly dispersed in the core 10 and the flame-retardant filler 20 in the form of microparticles, and the particle size of the microparticles is 10μm~100μm.
[0048] Specifically, when a mouse's teeth come into contact with the thread, the anti-bite microparticles are evenly dispersed within the thread, causing the teeth to immediately come into contact with the microparticles. The anti-bite components, such as the bittering agent on the surface of the microparticles, quickly dissolve in the mouse's saliva.
[0049] Furthermore, when mixing the plastic granules, flame-retardant raw materials, and anti-bite filler 30, appropriate mixing equipment and process parameters are required to ensure that the anti-bite microparticles are uniformly dispersed in the matrix. For example, a high-speed mixer can be used to mix the particles at a certain speed and mixing time, so that the microparticles can fully contact and fuse with the wire core 10 and the flame-retardant filler 20.
[0050] In one specific embodiment, the anti-bite filler 30 and the flame-retardant filler 20 are integrally formed within the wire core 10 by a melt co-extrusion process.
[0051] Specifically, plastic granules, flame-retardant materials, and bittering agents are stirred using a high-temperature screw mixer at approximately 270°C, where the three substances gradually melt. The high temperature provides energy for the phase transition, causing the substances to change from a solid to a molten state. During the melting process, continuous stirring ensures that the three substances are fully mixed in the molten state. Stirring breaks down the interfaces between the substances, promoting intermolecular diffusion and fusion, resulting in a uniform distribution of the plastic granules, flame-retardant materials, and bittering agents throughout the molten system. After thorough stirring, the three substances form a unified, fused structure. This structure means that the flame-retardant materials and bittering agents are uniformly dispersed within the plastic matrix, rather than simply physically mixed, thus ensuring uniform flame-retardant and rodent-resistant properties throughout the filament. The unified, fused molten material is extruded through a specific die and then stretched multiple times into filaments. The stretching process allows adjustment of the filament diameter and internal structure to achieve the desired mechanical properties and appearance quality.
[0052] The embodiments of this application provide a sleeve 200, including any of the flame-retardant wires 100 for rodent protection; the sleeve includes a first wire harness 210 and a second wire harness 220, the sleeve is woven from the first wire harness 210 and the second wire harness 220, and both the first wire harness 210 and the second wire harness 220 are twisted together from multiple flame-retardant wires.
[0053] Specifically, the first wire harness 210 and the second wire harness 220 are alternately braided to form a sleeve, providing the overall strength and flexibility of the sleeve. Each wire harness is formed by twisting multiple flame-retardant wires together, which improves the overall tensile strength of the wire harness. Braiding the flame-retardant wires into a sleeve gives the sleeve a flame-retardant effect. The sleeve is installed on the surface of the cable or equipment to protect it from the effects of the external environment (such as friction, high temperature, fire, rodent bite).
[0054] Therefore, the flame-retardant thread 100 for rodent protection provided above ensures that the flame-retardant material can be in contact at any biting position by designing the radial distribution of the flame-retardant band 21, thus overcoming the defect of local failure of traditional coatings; the bulk fusion design of the anti-bite filler 30 avoids the shortcomings of easy wear of the surface coating, so that when a mouse comes into contact with the thread, it will feel disgusted by the bitter taste and irritating smell of the anti-bite filler 30, thereby reducing the gnawing behavior and achieving long-term protection.
[0055] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.
Claims
1. A rodent bite resistant, flame resistant yarn comprising, include: wire core; Flame-retardant filler is distributed along the radial direction of the wire core, and the flame-retardant filler forms multiple spaced flame-retardant bands on the cross-section of the wire core, each of the flame-retardant bands extending along the axial direction of the wire core and penetrating the cross-section of the wire core; Anti-bite filler is integrated into the wire core and the flame-retardant filler.
2. A rodent bite resistant, flame resistant yarn according to claim 1, wherein, The core is made from melted plastic granules.
3. A rodent bite resistant, flame resistant yam according to claim 1, wherein, Along the radial direction of the core, the cross-sectional area formed by the flame-retardant filler accounts for approximately 25% of the cross-sectional area of the flame-retardant filament.
4. A rodent bite resistant, flame resistant yam according to claim 1, wherein, Along the radial direction of the wire core, the cross-sectional area formed by the wire core accounts for approximately 75% of the cross-sectional area of the flame-retardant filament.
5. A rodent bite resistant, flame resistant yam according to claim 1, wherein, Along the radial direction of the wire core, the cross-sectional area formed by the anti-bite filler accounts for approximately 1% of the cross-sectional area of the flame-retardant filament.
6. A rodent bite resistant, flame resistant yam according to claim 1, wherein, The anti-bite filler is a bittering agent.
7. A rodent bite resistant, flame resistant yam according to claim 1, wherein, The cross-sectional shape of the flame-retardant filament is circular, elliptical, or polygonal.
8. A rodent bite resistant, flame resistant yam according to claim 1, wherein, The anti-bite filler is uniformly dispersed in the wire core and the flame-retardant filler in the form of microparticles, and the particle size of the microparticles is 10μm~100μm.
9. A rodent bite resistant, flame resistant yam according to claim 1, wherein, The anti-bite filler and the flame-retardant filler are integrally formed in the wire core by a melt co-extrusion process.
10. A bushing characterized by, Including a flame-retardant filament for rodent protection as described in any one of claims 1-9; The sleeve includes a first wire harness and a second wire harness, and the sleeve is woven from the first wire harness and the second wire harness. Both the first wire harness and the second wire harness are twisted together from multiple flame-retardant wires.