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China PE Filling Strip for Power Cables - High-Quality Suppliers & Factory for Electrical Solutions
Product Description
1. Basic Characteristics
PE filling strips for power cables are mainly made of high molecular weight materials such as polyolefins, and added with appropriate amounts of plasticizers and flame retardants (optional according to demand), which are foamed, plasticized, and extruded. Some products will also be processed into filling strips made of other materials such as polyvinyl chloride (PVC) according to customer needs.
Good molding and stability, high mechanical strength, can fully ensure the structural stability of the cable during cable formation. Low density helps to reduce the manufacturing cost and overall weight of cables. The oxygen index of flame-retardant filling strips is high, which can effectively improve the flame retardant performance of cables (for filling strips with added flame retardants).
The specifications and sizes of filling strips vary depending on the manufacturer and product usage, and there are generally multiple specifications to choose from. Common specifications include 3*25, 3*35, 3*50, etc., with specific dimensions including height, width, arc radius, and other parameters.
2. Application Advantages
The filling strip is relatively hard and has good compressive deformation resistance. It can firmly fill the edge gaps of the cable, ensure the roundness of the cable after it is formed, and improve the appearance quality of the cable.
For cables with irregular twisted structures (such as 4-core, 5-core, 6-core, etc.), the filling strip can effectively support the insulated wire core, avoiding being flattened during cable bending or traction, resulting in the cable core not being round or the outer diameter exceeding the range.
Compared with filling ropes, filling strips are used less when filling the same gaps, which helps to reduce the manufacturing cost of cables.
3. Usage and Storage
In the process of cable formation, the appropriate size and quantity of filling strips should be selected according to the specific specifications and structure of the cable. Ensure that the filling strip is placed correctly to fully utilize its supporting and protective functions.
The filling strip should be stored in a clean, cool, dry, and ventilated warehouse, avoiding direct sunlight and humid environments. Regularly check the inventory status of filling strips and replenish them in a timely manner to ensure production demand.
4. Market and Development
With the continuous development of the power industry, the requirements for cable performance are also increasing. As one of the important materials in the cable production process, PE filling strips are used for power cables, and their market demand is constantly increasing. Meanwhile, with the continuous advancement of materials science and processing technology, the performance and quality of filling strips will also be further improved and optimized.
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Frequently Asked Questions
PE filling strips are primarily used to fill the gaps between the insulated wire cores during cable formation. This ensures the structural stability of the cable and maintains its round shape.
They are mainly made of high molecular weight polyolefins, which are foamed, plasticized, and extruded. Depending on client requirements, plasticizers, flame retardants, or other materials like polyvinyl chloride (PVC) can be used.
Compared to traditional filling ropes, filling strips require less material volume to fill the same gaps. Their low density also reduces the overall weight of the cable, resulting in lower manufacturing and transport costs.
Yes, flame retardants can be added to the material composition during manufacturing. These flame-retardant filling strips have a high oxygen index, which effectively enhances the overall flame-retardant performance of the cables.
They should be stored in a clean, cool, dry, and well-ventilated warehouse. It is crucial to avoid direct sunlight exposure and humid environments to maintain the physical integrity of the materials.