Product Specification

30mm 3 Strands Nylon Braided Mooring Anchor Rope Custom Twisted Plastic for Naval Vessels Marine Supplies

2. Main performance

3.Technology Comparison

Coil length: 220m

Spliced strength:± 10% lower

Weight and length tolerance:± 5%

MBL=Minimum Breaking Load conform ISO 2307

Other sizes available upon request

4.Parameter Table

Production Process

Step 1: Raw Material Preparation & Quality Inspection

• Select high-grade marine nylon filaments (compliant with marine durability standards) and food-grade/industrial-grade plastic materials (e.g., polyethylene or polypropylene, chosen for saltwater resistance and low friction).
• Conduct pre-production testing on raw materials: verify nylon’s tensile strength, elongation at break, and UV resistance; check plastic’s impact resistance and compatibility with nylon to ensure no chemical reactions occur during processing. Reject materials with defects like fiber unevenness or plastic impurities.

Step 2: Nylon Filament Spinning & Stranding

• Feed qualified nylon filaments into a spinning machine to twist them into continuous, uniform nylon yarns. Adjust the spinning tension to maintain consistent yarn thickness (critical for ensuring the final rope’s 30mm diameter accuracy).
• Gather multiple nylon yarns into three separate strand bundles. Use a stranding machine to twist each bundle into a tight, structured “pre-strand”—control the twist rate (typically 8–12 twists per meter) to balance flexibility and load-bearing capacity. Each pre-strand is inspected for uniformity; uneven strands are reworked.

Step 3: Integration of Custom Twisted Plastic

• Melt the selected plastic material in an extruder, then extrude it into thin, continuous plastic strips or filaments. Feed these plastic components into a custom twisting machine, where they are twisted together with each nylon pre-strand.
• The twisting process is calibrated to ensure plastic is evenly distributed along the nylon pre-strand—this enhances abrasion resistance without adding excessive weight. The integrated nylon-plastic strands are cooled rapidly (via air or water) to set the twist and prevent plastic deformation.

Step 4: 3-Strand Braiding & Diameter Calibration

• Transfer the three nylon-plastic integrated strands to a 3-strand braiding machine. Set the machine to interweave the strands into a braided structure, maintaining constant tension to avoid strand slippage.
• Monitor the braiding process in real time to ensure the final rope reaches the exact 30mm diameter: use laser diameter gauges to detect deviations, and adjust machine speed or strand tension promptly if inconsistencies arise.

Step 5: Post-Processing & Performance Enhancement

• Subject the braided rope to a heat-setting treatment: heat the rope to a controlled temperature (specific to nylon and plastic types) and hold it for a set duration, then cool it slowly. This stabilizes the braid structure, reduces post-use stretching, and enhances dimensional stability.
• Apply a marine-grade protective coating (e.g., UV-resistant and anti-fouling coating) to the rope’s surface. The coating forms a barrier against saltwater corrosion, marine organisms (e.g., barnacles), and UV radiation, extending the rope’s service life in harsh marine environments.

Step 6: Final Inspection, Cutting & Packaging

• Conduct comprehensive quality tests on the finished rope:
  • Tensile strength test: Verify it meets load-bearing requirements for naval and marine use.
  • Abrasion test: Simulate friction with dock edges/metal cleats to check wear resistance.
  • Water immersion test: Submerge in saltwater for 24–48 hours to confirm no water absorption or material degradation.
• Cut the rope into custom lengths (per customer requirements, e.g., 50m, 100m) using precision cutting tools. Package each length in moisture-proof, UV-resistant wraps (e.g., woven polypropylene bags) to protect it during storage and transportation.

2. Application Scope

Naval Vessel Operations

• Auxiliary Mooring for Naval Ships: Used as auxiliary mooring lines for small to medium naval vessels (e.g., patrol boats, coastal defense ships) when berthing at naval bases or temporary ports. Its 3-strand braided structure and nylon-plastic blend provide sufficient strength to secure vessels against tidal forces and wind, while the plastic component reduces friction against dock pilings—preventing scratches on the vessel’s hull.
• Emergency Anchor Lines: Deployed as backup anchor lines for naval vessels during emergency scenarios (e.g., main anchor system failure or sudden storms). The rope’s high tensile strength ensures it can hold the vessel’s position temporarily, and its resistance to saltwater corrosion ensures reliability even in prolonged submersion.

Commercial Marine & Port Operations

• Dockside Mooring for Cargo Vessels: Suitable for mooring small to mid-sized commercial cargo ships (e.g., coastal freighters, fishing trawlers) at commercial ports. Its 30mm diameter balances load capacity and maneuverability—easy for port workers to handle, yet strong enough to withstand the weight of loaded vessels. The plastic-integrated design resists wear from repeated contact with metal cleats and concrete docks.
• Harbor Tugboat Towing Lines: Used as light-duty towing lines for harbor tugboats tasked with guiding vessels into berths or assisting with ship maneuvering in narrow harbor channels. The rope’s flexibility allows it to adjust to the tugboat’s movement, while nylon’s elasticity absorbs sudden shocks—reducing strain on both the tugboat and the towed vessel.

Recreational & Industrial Marine Supplies

• Yacht & Leisure Boat Mooring: Ideal for mooring mid-sized yachts and leisure boats (e.g., sailboats, motor yachts) at marinas or private docks. Its braided texture is easy to coil and store on board, and the UV-resistant coating prevents degradation from prolonged sun exposure. The plastic component also adds visibility (if colored plastic is used), making the rope easier to spot in low-light conditions.
• Offshore Platform Auxiliary Lines: Used as auxiliary lines for small offshore platforms (e.g., oil exploration auxiliary platforms, marine research stations). It secures lightweight equipment (e.g., maintenance tools, supply crates) to the platform, and its resistance to saltwater and marine fouling ensures it remains functional in long-term offshore use.

Coastal & Marine Infrastructure Maintenance

• Coastal Defense Structure Securement: Employed to secure temporary coastal defense structures (e.g., floating breakwaters, sandbag barriers) during coastal maintenance or storm preparedness. The rope’s durability withstands exposure to salt spray and wave action, while its flexibility allows it to adapt to the movement of floating structures.
• Marina Dock Repair & Reinforcement: Used in marina dock repair projects—for example, to reinforce loose dock sections or secure temporary floating walkways. Its strength ensures the dock remains stable for pedestrian traffic, and its resistance to moisture prevents rot or degradation, even when in contact with water for extended periods.