Flame-retardant filling ropes are used in cables to fill any empty space or gaps between the cable components, providing mechanical stability, insulation, and flame retardancy to the cable. PP filler ropes are one type of flame-retardant filling ropes that are made of polypropylene material and offer good flame retardancy, low smoke emission, and excellent mechanical properties. They are commonly used in power and communication cables to fill any empty spaces between the conductor and insulation or between the insulation and the cable sheath. The semi-conductive properties of the PP filler rope also help to prevent electrical stress build-up and ensure the overall safety and reliability of the cable.
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