Fiber Optic Cable Outer Sheath Fiber Optic Cable Equipment Brands

Fiber optic cable outer sheaths protect the fibers from mechanical, environmental, and chemical damage, while leading equipment brands like Nextrom, Rosendahl, Maillefer, and Corning provide advanced machinery for cable production.

Fiber Optic Cable Outer Sheath

The outer sheath of a fiber optic cable, also called the jacket, is the final protective layer surrounding the optical fibers, cladding, buffering, and strength members. Its primary functions are to: Protect fibers from mechanical stress such as bending, crushing, or impact. Provide environmental resistance against moisture, UV radiation, chemicals, and temperature extremes.

Ensure installation safety and compliance with fire-retardant or low-smoke requirements for indoor or outdoor use. Common materials for outer sheaths include polyethylene (PE), polyvinyl chloride (PVC), nylon, and low-smoke zero halogen (LSZH) compounds. Some cables also use armored sheathing with metal spirals (aluminum, galvanized steel, or stainless steel) for additional mechanical protection, especially in direct-buried or aerial applications.

Sheathing can be customized for indoor, outdoor, aerial, duct, or microduct installations, with flame-retardant or temperature-stable properties depending on the application.

Fiber Optic Cable Equipment Brands

Several leading brands provide fiber optic cable production equipment, covering the entire manufacturing process from fiber drawing to finished cable: Nextrom / Rosendahl Nextrom: Offers complete solutions for optical glass making, fiber drawing, coating, ribbon making, proof testing, and cable production. Their machinery includes high-resolution monitoring systems for quality control and supports high-density fiber production. Maillefer: Specializes in extrusion technology for sheathing, providing versatile raw material handling, high centricity, and stable mechanical properties.

Their equipment ensures material efficiency and durability of the final cable. GFCableMachine: Provides ADSS fiber production line equipment, including fiber coloring, coating, stranding, cabling, and sheathing machines. These lines are designed for overhead power line installations and ensure high-quality, durable cables.

Corning: While primarily a cable manufacturer, Corning also offers advanced fiber optic cable solutions with various sheath types, including LSZH, plenum, and armored designs, suitable for indoor and outdoor applications.

Summary

The outer sheath is critical for protecting fiber optic cables in diverse environments, and selecting the right material depends on installation conditions and regulatory requirements. Leading equipment brands like Nextrom, Rosendahl, Maillefer, and GFCableMachine provide state-of-the-art machinery for producing high-quality fiber optic cables, ensuring precision, durability, and efficiency in manufacturing.