Power Optical Cable Manufacturing Process Flow Chart

The manufacturing of power optical cables involves sequential stages: fiber coloring, secondary coating, cabling, sheathing, and rigorous testing to ensure mechanical, optical, and environmental performance.

Step-by-Step Manufacturing Process

1. Fiber Coloring Process

• Purpose: Assign distinct, stable colors to fibers for easy identification during and after cable production.
• Materials: Optical fibers and UV-curable coloring inks (12 standard colors or custom mixes for 12+ cores).
• Equipment: Fiber coloring machine with pay-off, coloring mold, ink system, UV curing oven, traction, and take-up system.
• Key Requirements: No color migration, neat fiber arrangement, and compliance with attenuation standards ( ). 2. Secondary Coating Process
• Purpose: Apply a protective loose tube via extrusion and fill with fiber-specific grease for long-term protection.
• Equipment: Extrusion line with precise temperature and pressure control.
• Outcome: Ensures fiber durability, flexibility, and protection against environmental stress ( ). 3. Cabling Process
• Purpose: Combine multiple coated fibers into a cable structure to enhance flexibility, tensile strength, and bending performance.
• Key Parameters: Cabling pitch, yarn-tying pitch and tension, pay-off and take-up tension.
• Equipment: Cabling machine with SZ stranding table, yarn-tying device, dual-wheel traction, and electrical control.
• Result: Multi-core cables with uniform mechanical properties and minimal stress on fibers ( ). 4. Sheathing Process
• Purpose: Apply protective outer layers to safeguard fibers from mechanical, chemical, and environmental damage.
• Materials: PE, fire-retardant plastics, or other specialized polymers.
• Equipment: Sheathing extruder, steel/aluminum tape pay-off, longitudinal wrapping, grease filling, cooling trough, and gantry take-up.
• Key Considerations: Proper gap and overlap of metallic tapes, correct sheath thickness, clear printing, and neat winding ( ). 5. Testing and Quality Assurance
• Optical Tests: Mode field diameter, clad diameter, concentricity error, attenuation, chromatic dispersion, polarization mode dispersion, cut-off wavelength, and microbend tests.
• Mechanical and Environmental Tests: Tensile strength, bending, temperature resistance, UV and moisture exposure.
• Standards Compliance: ITU-T and IEC/ISO standards ensure cable performance and reliability ( ). 6. Packing and Delivery
• Purpose: Protect finished cables during storage and transportation.
• Method: Coiling, labeling, shrink-wrapping, and moisture-free packaging to maintain integrity ( ). This flow chart ensures that power optical cables are manufactured with high precision, durability, and compliance with international standards, suitable for electrical power transmission and communication applications.