Manufacturing process of anti-pulling flexible LED lamp strip and lamp strip

Abstract

The invention relates to the technical field of LED lamp strips, and discloses a manufacturing process of an anti-pulling flexible LED lamp strip and the lamp strip, and the manufacturing process comprises the following steps: S1, preparing a reinforcing strip; s2, preparing a PVC core wire; and S3, compounding and forming a finished product. The anti-pulling flexible LED lamp strip manufactured by the manufacturing process can maintain excellent light transmission and bending flexibility, has extremely high tensile strength, is good in anti-pulling effect, can adapt to fitting installation of a complex path, is suitable for outdoor suspension installation, wiring of movable parts or industrial equipment and other occasions, and has wide application prospects. And the cable is good in wear resistance, water resistance, moisture resistance, chemical corrosion resistance and ultraviolet aging resistance, and can adapt to harsh working conditions.

Description

Technical Field

[0001] This application belongs to the field of LED light strip technology, specifically relating to a manufacturing process and light strip for a tension-resistant flexible LED light strip. Background Technology

[0002] Flexible LED light strips, with their bendability, cutability, and ease of installation, have been widely used in decorative lighting, advertising displays, architectural outlining, and industrial equipment indication. Currently, most flexible LED light strips on the market typically use transparent or semi-transparent polymer materials such as polyvinyl chloride (PVC) or silicone as their main structure. A PCB board with LED components mounted on its surface is encapsulated within this PCB board through an extrusion process, thus forming the finished flexible LED light strip. However, existing flexible LED light strips still have shortcomings.

[0003] Firstly, the structural strength and tensile strength are insufficient: conventional PVC or silicone materials have limited tensile strength. When the light strip is suspended or installed on moving parts, or when it is accidentally pulled, it is easily damaged by tension. Existing technologies also include light strips with metal wires added to the PVC main structure. While adding metal wires can improve the tensile strength of the light strip, it also increases its weight and reduces its bending flexibility, making it difficult to adapt to complex installation paths. Furthermore, the metal wires may not bond firmly to the PVC main structure, resulting in delamination and slippage. This not only negates the reinforcing effect of the light strip but also affects its appearance and optical performance.

[0004] Secondly, the environmental tolerance is limited and it is difficult to adapt to harsh working conditions: The PVC main structure of existing light strips has relatively poor wear resistance, scratch resistance, chemical corrosion resistance and UV aging resistance. In industrial environments, outdoor long-term exposure or friction scenarios, the surface of the light strip is easily worn, aged and embrittled, or corroded by chemical substances, resulting in reduced light transmittance, material damage and internal components getting damp or damaged, thus affecting the optical effect of the light strip and significantly shortening its service life. Summary of the Invention

[0005] To solve or partially solve the problems existing in the related technologies, this application provides a manufacturing process and a light strip for a tensile-resistant flexible LED light strip. The tensile-resistant flexible LED light strip made by this manufacturing process can maintain excellent light transmittance and bending flexibility while having extremely high tensile strength and good tensile resistance.

[0006] The first aspect of this application provides a manufacturing process for a stretch-resistant flexible LED light strip, comprising the following steps: S1: Prepare the reinforcing tape by passing the aramid yarn through the first TPU extrusion die and performing TPU melt extrusion coating at a temperature of 150-155℃ to form a TPU-coated aramid yarn reinforcing tape; S2: To prepare PVC core wire, the PCB board with LED components is passed through a PVC extrusion mold and PVC is melt-extruded and coated at a temperature of 165-170℃ to form a transparent PVC core wire. S3: Finished product composite molding, the reinforcing strip obtained in step S1 is stacked with the PVC core wire obtained in step S2, and simultaneously passed through the second TPU extrusion mold, and the outer TPU is melt-extruded and composited at a temperature of 150-155℃ to form a composite light strip finished product in which the TPU shell fully covers the PVC core wire and the reinforcing strip.

[0007] In one alternative approach, step S1 specifically includes: S1.1: Preheat the rubber compound by baking the TPU compound at 70-80℃ for 3-4 hours; S1.2: Extrusion coating. Adjust the temperature of the extrusion equipment to 150-155℃, pass the aramid yarn through the first TPU extrusion die for coating, and control the discharge speed and traction speed to make the reinforced belt reach the predetermined specifications. S1.3: Cooling treatment, the extruded reinforcing strip is cooled in a water tank; S1.4: Anti-sticking treatment: After drying the surface moisture of the cooled reinforcing tape, wipe the surface of the reinforcing tape with a cloth containing industrial alcohol. S1.5: Rewind and set aside. After the surface of the reinforcing belt is dried, use a special upper winding device to rewind and set aside.

[0008] In one alternative approach, step S2 specifically includes: S2.1: Extrusion coating. Adjust the temperature of the extrusion equipment to 165-170℃, pass the PCB light board through the PVC extrusion die for coating, and control the discharge speed and traction speed to make the PVC core wires reach the predetermined specifications. S2.2: Cooling treatment, the extruded PVC core wire is cooled in a water tank; S2.3: Rewind and set aside. After drying the surface moisture of the cooled PVC core wire, use a special winding machine to rewind and set aside.

[0009] In one alternative approach, step S3 specifically includes: S3.1: Composite extrusion. Adjust the temperature of the extrusion equipment to 150-155℃. Place the reinforcing strip on the side of the PVC core wire away from the LED element. After stacking, pass it through the second TPU extrusion die simultaneously for composite coating to form a composite light strip with the TPU shell fully covering the PVC core wire and the reinforcing strip. Control the discharge speed and traction speed to make the composite light strip reach the predetermined specifications. S3.2: Cooling treatment, the composite extruded LED strip is cooled in a water tank; S3.3: Anti-sticking treatment: After drying the surface moisture of the cooled composite light strip, wipe the surface of the composite light strip with a cloth containing industrial alcohol. S3.4: Finished product cutting. After the surface of the composite light strip is dried, it is cut to the predetermined length to obtain the final composite light strip product.

[0010] In one alternative, the aramid thread is modified aramid.

[0011] In one alternative, the TPU compound includes functional additives, which are at least one of flame retardants, conductive fillers, and antibacterial agents.

[0012] The second aspect of this application provides a stretch-resistant flexible LED light strip manufactured by the aforementioned manufacturing process, the LED light strip including a PCB light board, PVC core wire, reinforcing strip, aramid wire, and TPU shell; The PCB light board is wrapped inside the PVC core wire, and the reinforcing strip is wrapped with aramid wire. The reinforcing strip is stacked on the side of the PVC core wire away from the LED component. The TPU shell is circumferentially wrapped around the PVC core wire and the reinforcing strip.

[0013] The beneficial effects of this application are: The manufacturing process of the anti-tension flexible LED light strip of this application involves coating aramid wires with TPU in a molten state to form a reinforcing strip with aramid wires as the reinforcing skeleton and TPU as the matrix covering the aramid wires. A PVC core wire is formed by coating a PCB light board with PVC. A second coating of PVC core wires and reinforcing strips with TPU in a molten state is then performed, resulting in a composite light strip with the PVC core wires and reinforcing strips fully covered by a TPU shell. This allows the LED light strip to maintain excellent light transmission and bending flexibility while possessing extremely high tensile strength and good anti-tension effect. It can adapt to complex path fitting installation and is suitable for outdoor hanging installation, as well as wiring of moving parts or industrial equipment. It also has good wear resistance, waterproof and moisture-proof properties, chemical corrosion resistance, and UV aging resistance, and can adapt to harsh working conditions.

[0014] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a flowchart of a manufacturing process in one embodiment of this application; Figure 2 This is a flowchart of step S1 of the manufacturing process in one embodiment of this application; Figure 3 This is a flowchart of step S2 of the manufacturing process in one embodiment of this application; Figure 4 This is a flowchart of step S3 of the manufacturing process in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of an LED light strip in one embodiment of this application.

[0017] The labels in the diagram are: 1-PCB light board, 2-PVC core wire, 3-reinforcing strip, 4-aramid wire, 5-TPU shell. Detailed Implementation

[0018] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application. Similarly, the following examples are only some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0019] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0022] Existing flexible LED light strips suffer from low structural strength, insufficient tensile strength, limited environmental tolerance, and difficulty in adapting to harsh working conditions.

[0023] To address the aforementioned problems, this application proposes improvements and innovations, including the following embodiments.

[0024] Example 1 Please see Figures 1-5 The first aspect of this application provides a manufacturing process for a stretch-resistant flexible LED light strip, comprising the following steps: S1: Prepare the reinforcing strip 3 by passing the aramid yarn 4 through the first TPU extrusion die and performing TPU melt extrusion coating at a temperature of 150-155℃ to form the TPU-coated aramid yarn 4 reinforcing strip 3; specifically including the following steps: S1.1: Preheat the rubber compound by baking the TPU compound at 70-80℃ for 3-4 hours; S1.2: Extrusion coating. Adjust the temperature of the extrusion equipment to 150-155℃, pass the aramid yarn 4 through the first TPU extrusion die for coating, and control the discharge speed and traction speed so that the resulting reinforcing belt 3 reaches the predetermined specifications. In this embodiment, the width of the reinforcing belt 3 is 13.3mm±0.3mm and the thickness is 1.5mm±0.3mm. S1.3: Cooling treatment, the extruded reinforcing strip 3 is cooled in a water tank; S1.4: Anti-sticking treatment: After drying the surface moisture of the cooled reinforcing tape 3, wipe the surface of the reinforcing tape 3 with a cloth containing industrial alcohol to prevent the reinforcing tape 3 from sticking together after subsequent winding.

[0025] S1.5: Rewind and set aside. After the surface of the reinforcing belt 3 is dried, use a special upper winding device to rewind and set aside.

[0026] In step S1, the aramid yarn 4 used has the characteristics of high strength, high temperature resistance of 500℃, lightweight, and extremely high tensile strength. The TPU material has the characteristics of wear resistance, scratch resistance, chemical corrosion resistance, and UV aging resistance. Therefore, by using TPU to coat the aramid yarn 4 in the molten state, a reinforcing band 3 is formed on the aramid yarn 4 with the aramid yarn 4 as the reinforcing skeleton and TPU as the matrix. Between the aramid yarn 4 and the TPU matrix, on the one hand, strong hydrogen bond interactions can be formed between the amide groups on the aramid molecular chain and the urethane groups on the TPU molecular chain. On the other hand, the molten TPU at a temperature of 150-155℃ can fully wet the surface and internal yarn structure of the aramid fiber to form mechanical interlocking and physical anchoring after cooling.

[0027] In this way, the aramid thread 4 can form a reliable mechanical engagement and chemical bond with the TPU matrix to achieve a firm bond, avoiding the problems of easy delamination and slippage between traditional reinforcing materials such as metal wires and the main structure in the prior art. Thus, the aramid thread 4 can provide the reinforcing strip 3 with extremely high tensile strength, so that the reinforcing strip 3 has good structural strength and tensile capacity, thereby ensuring that the LED light strip has good structural strength and tensile capacity. This increases the tensile strength of the LED light strip from 20-30 kg for traditional light strips with added metal wires to 80-90 kg. At the same time, it also ensures the lightweight and bending flexibility of the reinforcing strip 3, without increasing the weight of the LED light strip, and allows the LED light strip to adapt to complex path bonding installation.

[0028] S2: Prepare PVC core wire 2. Pass the PCB light board 1 with LED components onto a PVC extrusion mold through a PVC extrusion die, and perform PVC melt extrusion coating at a temperature of 165-170℃ to form a transparent PVC core wire 2; specifically including the following steps: S2.1: Extrusion coating. Adjust the temperature of the extrusion equipment to 165-170℃, and wrap the PCB lamp board 1 through the PVC extrusion mold. Control the discharge speed and traction speed to make the PVC core wire 2 reach the predetermined specifications. In this embodiment, the width of the PVC core wire 2 is 14.5mm±0.3mm and the thickness is 4.5mm±0.3mm. S2.2: Cooling treatment, the extruded PVC core wire 2 is cooled in a water tank; S2.3: Rewind and set aside. After drying the surface moisture of the cooled PVC core wire 2, use a special winding device to rewind and set aside.

[0029] In step S2, PVC core wire 2 is formed by covering PCB lamp board 1 with PVC. PVC material has good transparency and electrical insulation, which can effectively protect the internal PCB lamp board 1, and at the same time provide a flat substrate surface for subsequent composite with reinforcing strip 3.

[0030] S3: Finished product composite molding, the reinforcing strip 3 obtained in step S1 is stacked with the PVC core wire 2 obtained in step S2, and simultaneously passed through the second TPU extrusion mold. The outer TPU layer is melt-extruded and composited at a temperature of 150-155℃ to form a composite LED strip product in which the TPU shell 5 fully covers the PVC core wire 2 and the reinforcing strip 3; specifically including the following steps: S3.1: Composite extrusion. Adjust the temperature of the extrusion equipment to 150-155℃, and stack the reinforcing strip 3 on the side of the PVC core wire 2 away from the LED element. After stacking, it is simultaneously passed through the second TPU extrusion mold for composite coating, forming a composite light strip that fully covers the PVC core wire 2 and the reinforcing strip 3 with a TPU shell 5. Control the discharge speed and traction speed to make the composite light strip reach the predetermined specifications. In this embodiment, the width of the composite light strip is 16.5mm±0.3mm and the thickness is 8.0mm±0.3mm. S3.2: Cooling treatment, the composite extruded LED strip is cooled in a water tank; S3.3: Anti-sticking treatment: After drying the surface moisture of the cooled composite light strip, wipe the surface of the composite light strip with a cloth containing industrial alcohol. S3.4: Finished product cutting. After the surface of the composite light strip is dried, it is cut to the predetermined length to obtain the final composite light strip product.

[0031] In step S3, utilizing the wear-resistant, scratch-resistant, chemical corrosion-resistant, and UV-resistant properties of TPU material, a second coating of PVC core wire 2 and reinforcing strip 3 is performed by using TPU in a molten state. This forms a composite light strip with the TPU shell 5 fully covering the PVC core wire 2 and reinforcing strip 3, achieving a tight bond between the three layers. The inner layer protects the PCB light board 1 and allows light to pass through through the PVC core wire 2, while the reinforcing strip 3, covered with aramid wire 4, provides tensile strength. The outer layer, through the TPU shell 5, provides the LED light strip with overall wear resistance, waterproof and moisture-proof properties, scratch resistance, chemical corrosion resistance, and UV aging resistance, making the LED light strip highly environmentally tolerant and adaptable to harsh working conditions.

[0032] Thus, by coating the aramid wire 4 with TPU in a molten state, a reinforcing strip 3 is formed, with the aramid wire 4 as the reinforcing skeleton and TPU as the matrix covering the aramid wire 4. The PVC core wire 2 is formed by coating the PCB light board 1 with PVC. The PVC core wire 2 and the reinforcing strip 3 are then coated with TPU in a molten state, thus forming a composite light strip with the PVC core wire 2 and the reinforcing strip 3 fully covered by the TPU shell 5. This LED light strip maintains excellent light transmission and bending flexibility while having extremely high tensile strength and good anti-pull effect. It can adapt to complex path fitting installation and is suitable for outdoor hanging installation, as well as wiring of moving parts or industrial equipment. It is also wear-resistant, waterproof and moisture-proof, chemical corrosion resistant, and has good UV aging resistance, and can adapt to harsh working conditions.

[0033] In this embodiment, the forming of the reinforcing strip 3 and the composite coating of the TPU shell 5 are divided into two independent steps, so that the reinforcing strip 3 and the TPU shell 5 are set separately. In this way, in the manufacturing process of this LED light strip, the reinforcing strip 3, which is formed by coating the aramid wire 4 with TPU in a molten state, can be produced first. Then, the PVC core wire 2 and the outer layer of the reinforcing strip 3 are coated a second time by TPU in a molten state. In this way, the preparation process of the reinforcing strip 3 that coats the aramid wire 4 is separated from the overall composite molding of the light strip. If the aramid wire 4 is displaced during the TPU coating molding process, it can be detected and corrected in time. On the one hand, it is easy to ensure the centering of the aramid wire 4 in the reinforcing strip 3, which is conducive to ensuring the production quality of the reinforcing strip 3 and ensuring its tensile strength. On the other hand, it improves the fault tolerance of the light strip molding process and avoids material waste caused by the displacement of the aramid wire 4.

[0034] In this embodiment, the aramid thread 4 used in step S1.2 is modified aramid. Modified aramid refers to aramid fibers that have been treated by physical, chemical, or composite methods to change their surface properties or internal structure. This process can enhance the interfacial adhesion between the aramid and the TPU matrix, and impart conductive, antibacterial, and low-temperature resistant properties, while maintaining the original structural strength, tensile strength, high-temperature resistance, corrosion resistance, and fatigue resistance of the aramid.

[0035] Specifically, the bonding mechanism between modified aramid and TPU is mainly based on interfacial interaction and physical entanglement. After modification, the surface active groups of the modified aramid increase and its roughness increases. At the same time, TPU can fully wet the surface and internal yarn structure of the aramid fiber in the molten state, which can further promote the mechanical interlocking and chemical bonding between the aramid yarn 4 and TPU. This can further ensure the bonding strength between the aramid yarn 4 of the reinforcing belt 3 and the TPU matrix, so as to ensure the structural strength and tensile strength of the reinforcing belt 3.

[0036] In one embodiment, the TPU compound includes functional additives, such as flame retardants, conductive fillers, and antibacterial agents, to functionalize the TPU. This allows for the enhancement of the LED light strip's flame retardant, antistatic, and antibacterial properties without altering its main structure and manufacturing process. This makes it suitable for applications in industrial environments, such as cleanrooms for electronic devices, requiring antistatic and flame retardant properties, or for use in medical and food processing facilities where hygiene requirements are high.

[0037] Example 2 Please see Figure 5 Corresponding to the aforementioned embodiments of the manufacturing process for the anti-pull flexible LED light strip, a second aspect of this application provides an anti-pull flexible LED light strip manufactured using the aforementioned process. This LED light strip includes a PCB board 1, a PVC core wire 2, a reinforcing strip 3, an aramid fiber 4, and a TPU shell 5. The PCB board 1 is encased within the PVC core wire 2, and the reinforcing strip 3 encases the aramid fiber 4. The reinforcing strip 3 is stacked on the side of the PVC core wire 2 facing away from the LED element. The TPU shell 5 circumferentially encases the PVC core wire 2 and the reinforcing strip 3. By stacking the reinforcing strip 3 on the side of the PVC core wire 2 facing away from the LED element, the luminous effect of this LED light strip is ensured to be unaffected by the reinforcing structure.

[0038] Thus, by setting up a reinforcing strip 3 with aramid wire 4 as the reinforcing skeleton and TPU as the matrix covering the aramid wire 4, and by fully covering the PVC core wire 2 and the reinforcing strip 3 with a TPU shell 5, a three-layer structure is formed into a tightly integrated composite light strip. This allows the LED light strip to maintain excellent light transmission and bending flexibility while possessing extremely high tensile strength. It can adapt to complex path fitting installations and is suitable for outdoor hanging installations, as well as wiring for moving parts or industrial equipment. Furthermore, it is wear-resistant, waterproof and moisture-proof, chemically resistant, and has good UV aging resistance, making it suitable for harsh working conditions.

[0039] Finally, it should be noted that although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, all of which should be included within the protection scope of this application.

Claims

1. A manufacturing process of a pull-resistant flexible LED light strip, characterized in that, At least comprising the following steps: S1: preparing the reinforcing tape, passing the aramid fiber through the first TPU extrusion die, TPU melt extrusion coating at a temperature of 150-155℃, forming a TPU coated aramid fiber reinforcing tape; S2: preparing the PVC core wire, passing the PCB lamp plate with LED elements attached through the PVC extrusion die, PVC melt extrusion coating at a temperature of 165-170℃, forming a transparent PVC core wire; S3: composite molding of finished products, superimposing the reinforcing tape prepared in step S1 and the PVC core wire prepared in step S2, and synchronously passing through the second TPU extrusion die, outer layer TPU melt extrusion composite at a temperature of 150-155℃, forming a TPU shell coated composite lamp strip product of the PVC core wire and the reinforcing tape.

2. The manufacturing process of claim 1, wherein, Step S1 specifically includes: S1.1: preheating the glue, baking the TPU glue at a temperature of 70-80℃ for 3-4 hours; S1.2: extrusion coating, adjusting the extrusion equipment temperature to 150-155℃, passing the aramid fiber through the first TPU extrusion die for coating, controlling the discharge speed and traction speed, so that the prepared reinforcing tape reaches the predetermined specification; S1.3: cooling treatment, passing the extrusion formed reinforcing tape through a water tank for cooling; S1.4: anti-sticking treatment, after blowing dry the surface moisture of the cooled reinforcing tape, using a cloth containing industrial alcohol to wipe the surface of the reinforcing tape; S1.5: winding for standby, after the surface of the reinforcing tape is dried, using a special upper shaft equipment for winding standby.

3. The manufacturing process of claim 1, wherein, Step S2 specifically includes: S2.1: extrusion coating, adjusting the extrusion equipment temperature to 165-170℃, passing the PCB lamp plate through the PVC extrusion die for coating, controlling the discharge speed and traction speed, so that the prepared PVC core wire reaches the predetermined specification; S2.2: cooling treatment, passing the extrusion formed PVC core wire through a water tank for cooling; S2.3: winding for standby, after blowing dry the surface moisture of the cooled PVC core wire, using a special upper shaft equipment for winding standby.

4. The manufacturing process of claim 1, wherein, Step S3 specifically includes: S3.1: composite extrusion, adjusting the extrusion equipment temperature to 150-155℃, superimposing the reinforcing tape on the side of the PVC core wire away from the LED elements, after superimposition, synchronously passing through the second TPU extrusion die for composite coating, forming a TPU shell coated composite lamp strip of the PVC core wire and the reinforcing tape, controlling the discharge speed and traction speed, so that the prepared composite lamp strip reaches the predetermined specification; S3.2: cooling treatment, passing the composite extrusion formed composite lamp strip through a water tank for cooling; S3.3: anti-sticking treatment, after blowing dry the surface moisture of the cooled composite lamp strip, using a cloth containing industrial alcohol to wipe the surface of the composite lamp strip; S3.4: finished product cutting, after the surface of the composite lamp strip is dried, cutting according to the predetermined length to obtain the final composite lamp strip finished product.

5. The manufacturing process according to any one of claims 1-4, wherein: The aramid fiber is modified aramid fiber.

6. The manufacturing process according to any one of claims 1-4, wherein: The TPU compound comprises a functional additive, which is at least one of a flame retardant, a conductive filler, and an antibacterial agent.

7. The pull resistant flexible LED light strip produced by the manufacturing process of any one of claims 1-6, wherein: The PCB lamp plate, the PVC core wire, the reinforcing belt, the aramid wire, and the TPU shell are included. The PCB lamp plate is covered in the PVC core wire, the aramid wire is covered in the reinforcing belt, the reinforcing belt is arranged on the side of the PVC core wire away from the LED element, and the TPU shell is circumferentially covered on the periphery of the PVC core wire and the reinforcing belt.

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